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-rw-r--r--UPDATING3
-rw-r--r--sbin/Makefile1
-rw-r--r--sbin/mount_fusefs/Makefile33
-rw-r--r--sbin/mount_fusefs/mount_fusefs.8363
-rw-r--r--sbin/mount_fusefs/mount_fusefs.c504
-rw-r--r--sys/conf/NOTES1
-rw-r--r--sys/conf/files9
-rw-r--r--sys/conf/options1
-rw-r--r--sys/fs/fuse/fuse.h223
-rw-r--r--sys/fs/fuse/fuse_debug.h79
-rw-r--r--sys/fs/fuse/fuse_device.c447
-rw-r--r--sys/fs/fuse/fuse_file.c260
-rw-r--r--sys/fs/fuse/fuse_file.h153
-rw-r--r--sys/fs/fuse/fuse_internal.c696
-rw-r--r--sys/fs/fuse/fuse_internal.h393
-rw-r--r--sys/fs/fuse/fuse_io.c811
-rw-r--r--sys/fs/fuse/fuse_io.h67
-rw-r--r--sys/fs/fuse/fuse_ipc.c904
-rw-r--r--sys/fs/fuse/fuse_ipc.h423
-rw-r--r--sys/fs/fuse/fuse_kernel.h373
-rw-r--r--sys/fs/fuse/fuse_main.c162
-rw-r--r--sys/fs/fuse/fuse_node.c384
-rw-r--r--sys/fs/fuse/fuse_node.h142
-rw-r--r--sys/fs/fuse/fuse_param.h80
-rw-r--r--sys/fs/fuse/fuse_vfsops.c533
-rw-r--r--sys/fs/fuse/fuse_vnops.c2037
-rw-r--r--sys/modules/Makefile1
-rw-r--r--sys/modules/fuse/Makefile10
28 files changed, 9093 insertions, 0 deletions
diff --git a/UPDATING b/UPDATING
index 5e249a3..ef0cabb 100644
--- a/UPDATING
+++ b/UPDATING
@@ -24,6 +24,9 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 10.x IS SLOW:
disable the most expensive debugging functionality run
"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
+20121014:
+ Import the FUSE kernel and userland support into base system.
+
20121013:
The GNU sort(1) program has been removed since the BSD-licensed
sort(1) has been the default for quite some time and no serious
diff --git a/sbin/Makefile b/sbin/Makefile
index fcdb567..29a5f16 100644
--- a/sbin/Makefile
+++ b/sbin/Makefile
@@ -49,6 +49,7 @@ SUBDIR=adjkerntz \
mksnap_ffs \
mount \
mount_cd9660 \
+ mount_fusefs \
mount_msdosfs \
mount_nfs \
mount_ntfs \
diff --git a/sbin/mount_fusefs/Makefile b/sbin/mount_fusefs/Makefile
new file mode 100644
index 0000000..0af8a80
--- /dev/null
+++ b/sbin/mount_fusefs/Makefile
@@ -0,0 +1,33 @@
+# $FreeBSD$
+
+.if defined(DEBUG)
+DEBUG_FLAGS+= -D_DEBUG -g
+.endif
+
+.if defined(DEBUG2G)
+DEBUG_FLAGS+= -D_DEBUG2G -g
+.endif
+
+.if defined(DEBUG3G)
+DEBUG_FLAGS+= -D_DEBUG3G -g
+.endif
+
+.if defined(DEBUG_MSG)
+DEBUG_FLAGS+= -D_DEBUG_MSG
+.endif
+
+.if defined(F4BVERS)
+DEBUG_FLAGS+= -DFUSE4BSD_VERSION="\"${F4BVERS}\""
+.endif
+
+PROG= mount_fusefs
+SRCS= mount_fusefs.c getmntopts.c
+MAN8= mount_fusefs.8
+NO_MANCOMPRESS?= yes
+
+MOUNT= ${.CURDIR}/../mount
+CFLAGS+= -I${MOUNT}
+
+.PATH: ${MOUNT}
+
+.include <bsd.prog.mk>
diff --git a/sbin/mount_fusefs/mount_fusefs.8 b/sbin/mount_fusefs/mount_fusefs.8
new file mode 100644
index 0000000..a6a1b2c
--- /dev/null
+++ b/sbin/mount_fusefs/mount_fusefs.8
@@ -0,0 +1,363 @@
+.\" Copyright (c) 1980, 1989, 1991, 1993
+.\" The Regents of the University of California.
+.\" Copyright (c) 2005, 2006 Csaba Henk
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd October 11, 2012
+.Dt MOUNT_FUSEFS 8
+.Os
+.Sh NAME
+.Nm mount_fusefs
+.Nd mount a Fuse file system daemon
+.Sh SYNOPSIS
+.Nm
+.Op Fl A
+.Op Fl S
+.Op Fl v
+.Op Fl D Ar fuse_daemon
+.Op Fl O Ar daemon_opts
+.Op Fl s Ar special
+.Op Fl m Ar node
+.Op Fl h
+.Op Fl V
+.Op Fl o Ar option ...
+.Ar special node
+.Op Ar fuse_daemon ...
+.Sh DESCRIPTION
+Basic usage is to start a fuse daemon on the given
+.Ar special
+file. In practice, the daemon is assigned a
+.Ar special
+file automatically, which can then be indentified via
+.Xr fstat 1 .
+That special file can then be mounted by
+.Nm .
+.Pp
+However, the procedure of spawning a daemon will usually be automated
+so that it is performed by
+.Nm .
+If the command invoking a given
+.Ar fuse_daemon
+is appended to the list of arguments,
+.Nm
+will call the
+.Ar fuse_daemon
+via that command. In that way the
+.Ar fuse_daemon
+will be instructed to attach itself to
+.Ar special .
+From that on mounting goes as in the simple case. (See
+.Sx DAEMON MOUNTS . )
+.Pp
+The
+.Ar special
+argument normally will be treated as the path of the special file to mount.
+.Pp
+However, if
+.Pa auto
+is passed as
+.Ar special ,
+then
+.Nm
+will look for a suitable free fuse device by itself.
+.Pp
+Finally, if
+.Ar special
+is an integer it will be interpreted as the number
+of the file descriptor of an already open fuse device
+(used when the Fuse library invokes
+.Nm .
+(See
+.Sx DAEMON MOUNTS ) .
+.Pp
+The options are as follows:
+.Bl -tag -width indent
+.It Fl A , Ic --reject-allow_other
+Prohibit the
+.Cm allow_other
+mount flag. Intended for use in scripts and the
+.Xr sudoers 5
+file.
+.It Fl S , Ic --safe
+Run in safe mode (i.e. reject invoking a filesystem daemon)
+.It Fl v
+Be verbose
+.It Fl D, Ic --daemon Ar daemon
+Call the specified
+.Ar daemon
+.It Fl O, Ic --daemon_opts Ar opts
+Add
+.Ar opts
+to the daemon's command line
+.It Fl s, Ic --special Ar special
+Use
+.Ar special
+as special
+.It Fl m, Ic --mountpath Ar node
+Mount on
+.Ar node
+.It Fl h, Ic --help
+Show help
+.It Fl V, Ic --version
+Show version information
+.It Fl o
+Mount options are specified via
+.Fl o .
+The following options are available (and also their negated versions,
+by prefixing them with
+.Dq no ) :
+.Bl -tag -width indent
+.It Cm default_permissions
+Enable traditional (file mode based) permission checking in kernel
+.It Cm allow_other
+Do not apply
+.Sx STRICT ACCESS POLICY .
+Only root can use this option
+.It Cm max_read Ns = Ns Ar n
+Limit size of read requests to
+.Ar n
+.It Cm private
+Refuse shared mounting of the daemon. This is the default behaviour,
+to allow sharing, expicitly use
+.Fl o Cm noprivate
+.It Cm neglect_shares
+Don't refuse unmounting if there are secondary mounts
+.It Cm push_symlinks_in
+Prefix absolute symlinks with the mountpoint
+.El
+.Pp
+.El
+.Pp
+Besides the above mount options, there is a set of pseudo-mount options which
+are supported by the Fuse library. One can list these by passing
+.Fl h
+to a Fuse daemon. Most of these options have effect only on the behaviour of
+the daemon (that is, their scope is limited to userspace). However,
+there are some which do require in-kernel support.
+Currently the options supported by the kernel are:
+.Bl -tag -width indent
+.It Cm direct_io
+Bypass the buffer cache system
+.It Cm kernel_cache
+By default cached buffers of a given file are flushed at each
+.Xr open 2 .
+This option disables this behaviour
+.El
+.Sh DAEMON MOUNTS
+Usually users don't need to use
+.Nm
+directly, as the Fuse library enables Fuse daemons to invoke
+.Nm .
+That is,
+.Pp
+.Dl fuse_daemon device mountpoint
+.Pp
+has the same effect as
+.Pp
+.Dl mount_fusefs auto mountpoint fuse_daemon
+.Pp
+This is the recommended usage when you want basic usage
+(eg, run the daemon at a low privilege level but mount it as root).
+.Sh STRICT ACCESS POLICY
+The strict access policy for Fuse filesystems lets one to use the filesystem
+only if the filesystem daemon has the same credentials (uid, real uid, gid,
+real gid) as the user.
+.Pp
+This is applied for Fuse mounts by default and only root can mount without
+the strict access policy (ie. the
+.Cm allow_other
+mount option).
+.Pp
+This is to shield users from the daemon
+.Dq spying
+on their I/O activities.
+.Pp
+Users might opt to willingly relax strict access policy (as far they
+are concerned) by doing their own secondary mount (See
+.Sx SHARED MOUNTS ) .
+.Sh SHARED MOUNTS
+A Fuse daemon can be shared (ie. mounted multiple times).
+When doing the first (primary) mount, the spawner and the mounter of the daemon
+must have the same uid, or the mounter should be the superuser.
+.Pp
+After the primary mount is in place, secondary mounts can be done by anyone
+unless this feature is disabled by
+.Cm private .
+The behaviour of a secondary mount is analogous to that of symbolic
+links: they redirect all filesystem operations to the primary mount.
+.Pp
+Doing a secondary mount is like signing an agreement: by this action, the mounter
+agrees that the Fuse daemon can trace her I/O activities. From then on
+she is not banned from using the filesystem (either via her own mount or
+via the primary mount), regardless whether
+.Cm allow_other
+is used or not.
+.Pp
+The device name of a secondary mount is the device name of the corresponding
+primary mount, followed by a '#' character and the index of the secondary
+mount; e.g.
+.Pa /dev/fuse0#3 .
+.Sh SECURITY
+System administrators might want to use a custom mount policy (ie., one going
+beyond the
+.Va vfs.usermount
+sysctl). The primary tool for such purposes is
+.Xr sudo 8 .
+However, given that
+.Nm
+is capable of invoking an arbitrary program, one must be careful when doing this.
+.Nm
+is designed in a way such that it makes that easy. For this purpose,
+there are options which disable certain risky features (ie.
+.Fl S
+and
+.Fl A ) ,
+and command line parsing is done in a flexible way: mixing options and
+non-options is allowed, but processing them stops at the third non-option
+argument (after the first two has been utilized as device and mountpoint).
+The rest of the command line specifies the daemon and its arguments.
+(Alternatively, the daemon, the special and the mount path can be
+specified using the respective options.) Note that
+.Nm
+ignores the environment variable
+.Ev POSIXLY_CORRECT
+and always behaves as described.
+.Pp
+In general, to be as scripting /
+.Xr sudoers 5
+friendly as possible, no information has a fixed
+position in the command line, but once a given piece of information is
+provided, subsequent arguments/options cannot override it (with the
+exception of some non-critical ones).
+.Sh ENVIRONMENT
+.Bl -tag -width ".Ev MOUNT_FUSEFS_SAFE"
+.It Ev MOUNT_FUSEFS_SAFE
+This has the same effect as the
+.Fl S
+option.
+.It Ev MOUNT_FUSEFS_VERBOSE
+This has the same effect as the
+.Fl v
+option.
+.It Ev MOUNT_FUSEFS_IGNORE_UNKNOWN
+If set,
+.Nm
+will ignore uknown mount options.
+.It Ev MOUNT_FUSEFS_CALL_BY_LIB
+Adjust behaviour to the needs of the FUSE library. Currently it effects
+help output.
+.El
+.Pp
+Although the following variables don't have any effect on
+.Nm
+itself, they affect the behaviour of fuse daemons:
+.Bl -tag -width ".Ev FUSE_DEV_NAME"
+.It Ev FUSE_DEV_NAME
+Device to attach. If not set, the multiplexer path
+.Ar /dev/fuse
+is used.
+.It Ev FUSE_DEV_FD
+File desciptor of an opened Fuse device to use. Overrides
+.Ev FUSE_DEV_NAME .
+.It Ev FUSE_NO_MOUNT
+If set, the library won't attempt to mount the filesystem, even
+if a mountpoint argument is supplied.
+.El
+.Sh FILES
+.Bl -tag -width /dev/fuse
+.It Pa /dev/fuse
+Fuse device with which the kernel and Fuse daemons can communicate.
+.It Pa /dev/fuse
+The multiplexer path. An
+.Xr open 2
+performed on it automatically is passed to a free Fuse device by the kernel
+(which might be created just for this puprose).
+.El
+.Sh EXAMPLES
+Mount the example filesystem in the Fuse distribution (from its directory):
+either
+.Pp
+.Dl ./fusexmp /mnt/fuse
+.Pp
+or
+.Pp
+.Dl mount_fusefs auto /mnt/fuse ./fusexmp
+.Pp
+Doing the same in two steps, using
+.Pa /dev/fuse0 :
+.Pp
+.Dl FUSE_DEV_NAME=/dev/fuse ./fusexmp &&
+.Dl mount_fusefs /dev/fuse /mnt/fuse
+.Pp
+A script wrapper for fusexmp which ensures that
+.Nm
+doesn't call any external utility and also provides a hacky
+(non race-free) automatic device selection:
+.Pp
+.Dl #!/bin/sh -e
+.Pp
+.Dl FUSE_DEV_NAME=/dev/fuse fusexmp
+.Dl mount_fusefs -S /dev/fuse /mnt/fuse \(lq$@\(rq
+.Sh SEE ALSO
+.Xr fstat 1 ,
+.Xr mount 8 ,
+.Xr umount 8 ,
+.Xr sudo 8
+.Sh CAVEATS
+Secondary mounts should be unmounted via their device name. If an attempt is
+made to be unmount them via their filesystem root path, the unmount request
+will be forwarded to the primary mount path.
+In general, unmounting by device name is less error-prone than by mount path
+(although the latter will also work under normal circumstances).
+.Pp
+If the daemon is specified via the
+.Fl D
+and
+.Fl O
+options, it will be invoked via
+.Xr system 3 ,
+and the daemon's command line will also have an
+.Dq &
+control operator appended, so that we don't have to wait for its termination.
+You should use a simple command line when invoking the daemon via these options.
+.Sh HISTORY
+.Nm
+appears as the part of the FreeBSD implementation of the Fuse userspace filesystem
+framework (see http://fuse.sourceforge.net). This user interface is FreeBSD specific.
+.Sh BUGS
+.Ar special
+is treated as a multiplexer if and only if it is literally the same as
+.Pa auto
+or
+.Pa /dev/fuse .
+Other paths which are equivalent with
+.Pa /dev/fuse
+(eg.,
+.Pa /../dev/fuse )
+are not.
diff --git a/sbin/mount_fusefs/mount_fusefs.c b/sbin/mount_fusefs/mount_fusefs.c
new file mode 100644
index 0000000..71a022a
--- /dev/null
+++ b/sbin/mount_fusefs/mount_fusefs.c
@@ -0,0 +1,504 @@
+/*-
+ * Copyright (c) 2005 Jean-Sebastien Pedron
+ * Copyright (c) 2005 Csaba Henk
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <sys/uio.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <getopt.h>
+#include <libgen.h>
+#include <limits.h>
+#include <osreldate.h>
+#include <paths.h>
+
+#include "mntopts.h"
+
+#ifndef FUSE4BSD_VERSION
+#define FUSE4BSD_VERSION "0.3.9-pre1"
+#endif
+
+void __usage_short(void);
+void usage(void);
+void helpmsg(void);
+void showversion(void);
+int init_backgrounded(void);
+
+struct mntopt mopts[] = {
+ #define ALTF_PRIVATE 0x01
+ { "private", 0, ALTF_PRIVATE, 1 },
+ { "neglect_shares", 0, 0x02, 1 },
+ { "push_symlinks_in", 0, 0x04, 1 },
+ { "allow_other", 0, 0x08, 1 },
+ { "default_permissions", 0, 0x10, 1 },
+ #define ALTF_MAXREAD 0x20
+ { "max_read=", 0, ALTF_MAXREAD, 1 },
+ #define ALTF_SUBTYPE 0x40
+ { "subtype=", 0, ALTF_SUBTYPE, 1 },
+ #define ALTF_SYNC_UNMOUNT 0x80
+ { "sync_unmount", 0, ALTF_SYNC_UNMOUNT, 1 },
+ /* Linux specific options, we silently ignore them */
+ { "fsname=", 0, 0x00, 1 },
+ { "fd=", 0, 0x00, 1 },
+ { "rootmode=", 0, 0x00, 1 },
+ { "user_id=", 0, 0x00, 1 },
+ { "group_id=", 0, 0x00, 1 },
+ { "large_read", 0, 0x00, 1 },
+ /* "nonempty", just the first two chars are stripped off during parsing */
+ { "nempty", 0, 0x00, 1 },
+ MOPT_STDOPTS,
+ MOPT_END
+};
+
+struct mntval {
+ int mv_flag;
+ void *mv_value;
+ int mv_len;
+};
+
+struct mntval mvals[] = {
+ { ALTF_MAXREAD, NULL, 0 },
+ { ALTF_SUBTYPE, NULL, 0 },
+ { 0, NULL, 0 }
+};
+
+char *progname;
+
+#define DEFAULT_MOUNT_FLAGS ALTF_PRIVATE | ALTF_SYNC_UNMOUNT
+
+int
+main(int argc, char *argv[])
+{
+ struct iovec *iov;
+ char ch = '\0';
+ int mntflags, iovlen, verbose = 0;
+ char *dev = NULL, *dir = NULL, mntpath[MAXPATHLEN];
+ char *devo = NULL, *diro = NULL;
+ char ndev[128], fdstr[15];
+ int i, done = 0, reject_allow_other = 0, safe_level = 0;
+ int altflags = DEFAULT_MOUNT_FLAGS;
+ int __altflags = DEFAULT_MOUNT_FLAGS;
+ struct mntopt *mo;
+ struct mntval *mv;
+ static struct option longopts[] = {
+ {"reject-allow_other", no_argument, NULL, 'A'},
+ {"safe", no_argument, NULL, 'S'},
+ {"daemon", required_argument, NULL, 'D'},
+ {"daemon_opts", required_argument, NULL, 'O'},
+ {"special", required_argument, NULL, 's'},
+ {"mountpath", required_argument, NULL, 'm'},
+ {"version", no_argument, NULL, 'V'},
+ {"help", no_argument, NULL, 'h'},
+ {0,0,0,0}
+ };
+ int pid = 0;
+ int fd = -1, fdx;
+ char *ep;
+ char *daemon_str = NULL, *daemon_opts = NULL;
+
+ progname = argv[0];
+
+ /*
+ * We want a parsing routine which is not sensitive to
+ * the position of args/opts; it should extract the
+ * first two args and stop at the beginning of the rest.
+ * (This makes it easier to call mount_fusefs from external
+ * utils than it is with a strict "util flags args" syntax.)
+ */
+
+ iov = NULL;
+ iovlen = 0;
+ mntflags = 0;
+ /* All in all, I feel it more robust this way... */
+ unsetenv("POSIXLY_CORRECT");
+ if (getenv("MOUNT_FUSEFS_IGNORE_UNKNOWN"))
+ getmnt_silent = 1;
+ if (getenv("MOUNT_FUSEFS_VERBOSE"))
+ verbose = 1;
+
+ do {
+ for (i = 0; i < 3; i++) {
+ if (optind < argc && argv[optind][0] != '-') {
+ if (dir) {
+ done = 1;
+ break;
+ }
+ if (dev)
+ dir = argv[optind];
+ else
+ dev = argv[optind];
+ optind++;
+ }
+ }
+ switch(ch) {
+ case 'A':
+ reject_allow_other = 1;
+ break;
+ case 'S':
+ safe_level = 1;
+ break;
+ case 'D':
+ if (daemon_str)
+ errx(1, "daemon specified inconsistently");
+ daemon_str = optarg;
+ break;
+ case 'O':
+ if (daemon_opts)
+ errx(1, "daemon opts specified inconsistently");
+ daemon_opts = optarg;
+ break;
+ case 'o':
+ getmntopts(optarg, mopts, &mntflags, &altflags);
+ for (mv = mvals; mv->mv_flag; ++mv) {
+ if (! (altflags & mv->mv_flag))
+ continue;
+ for (mo = mopts; mo->m_flag; ++mo) {
+ char *p, *q;
+
+ if (mo->m_flag != mv->mv_flag)
+ continue;
+ p = strstr(optarg, mo->m_option);
+ if (p) {
+ p += strlen(mo->m_option);
+ q = p;
+ while (*q != '\0' && *q != ',')
+ q++;
+ mv->mv_len = q - p + 1;
+ mv->mv_value = malloc(mv->mv_len);
+ memcpy(mv->mv_value, p, mv->mv_len - 1);
+ ((char *)mv->mv_value)[mv->mv_len - 1] = '\0';
+ break;
+ }
+ }
+ }
+ break;
+ case 's':
+ if (devo)
+ errx(1, "special specified inconsistently");
+ devo = optarg;
+ break;
+ case 'm':
+ if (diro)
+ errx(1, "mount path specified inconsistently");
+ diro = optarg;
+ break;
+ case 'v':
+ verbose = 1;
+ break;
+ case 'h':
+ helpmsg();
+ break;
+ case 'V':
+ showversion();
+ break;
+ case '\0':
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ if (done)
+ break;
+ } while ((ch = getopt_long(argc, argv, "AvVho:SD:O:s:m:", longopts, NULL)) != -1);
+
+ argc -= optind;
+ argv += optind;
+
+ if (devo) {
+ if (dev)
+ errx(1, "special specified inconsistently");
+ dev = devo;
+ } else if (diro)
+ errx(1, "if mountpoint is given via an option, special should also be given via an option");
+
+ if (diro) {
+ if (dir)
+ errx(1, "mount path specified inconsistently");
+ dir = diro;
+ }
+
+ if ((! dev) && argc > 0) {
+ dev = *argv++;
+ argc--;
+ }
+
+ if ((! dir) && argc > 0) {
+ dir = *argv++;
+ argc--;
+ }
+
+ if (! (dev && dir))
+ errx(1, "missing special and/or mountpoint");
+
+ for (mo = mopts; mo->m_flag; ++mo) {
+ if (altflags & mo->m_flag) {
+ int iov_done = 0;
+
+ if (reject_allow_other &&
+ strcmp(mo->m_option, "allow_other") == 0)
+ /*
+ * reject_allow_other is stronger than a
+ * negative of allow_other: if this is set,
+ * allow_other is blocked, period.
+ */
+ errx(1, "\"allow_other\" usage is banned by respective option");
+
+ for (mv = mvals; mv->mv_flag; ++mv) {
+ if (mo->m_flag != mv->mv_flag)
+ continue;
+ if (mv->mv_value) {
+ build_iovec(&iov, &iovlen, mo->m_option, mv->mv_value, mv->mv_len);
+ iov_done = 1;
+ break;
+ }
+ }
+ if (! iov_done)
+ build_iovec(&iov, &iovlen, mo->m_option,
+ __DECONST(void *, ""), -1);
+ }
+ if (__altflags & mo->m_flag) {
+ char *uscore_opt;
+
+ if (asprintf(&uscore_opt, "__%s", mo->m_option) == -1)
+ err(1, "failed to allocate memory");
+ build_iovec(&iov, &iovlen, uscore_opt,
+ __DECONST(void *, ""), -1);
+ free(uscore_opt);
+ }
+ }
+
+ if (getenv("MOUNT_FUSEFS_SAFE"))
+ safe_level = 1;
+
+ if (safe_level > 0 && (argc > 0 || daemon_str || daemon_opts))
+ errx(1, "safe mode, spawning daemon not allowed");
+
+ if ((argc > 0 && (daemon_str || daemon_opts)) ||
+ (daemon_opts && ! daemon_str))
+ errx(1, "daemon specified inconsistently");
+
+ /*
+ * Resolve the mountpoint with realpath(3) and remove unnecessary
+ * slashes from the devicename if there are any.
+ */
+ if (checkpath(dir, mntpath) != 0)
+ err(1, "%s", mntpath);
+ (void)rmslashes(dev, dev);
+
+ if (strcmp(dev, "auto") == 0)
+ dev = __DECONST(char *, "/dev/fuse");
+
+ if (strcmp(dev, "/dev/fuse") == 0) {
+ if (! (argc > 0 || daemon_str)) {
+ fprintf(stderr, "Please also specify the fuse daemon to run when mounting via the multiplexer!\n");
+ usage();
+ }
+ if ((fd = open(dev, O_RDWR)) < 0)
+ err(1, "failed to open fuse device");
+ } else {
+ fdx = strtol(dev, &ep, 10);
+ if (*ep == '\0')
+ fd = fdx;
+ }
+
+ /* Identifying device */
+ if (fd >= 0) {
+ struct stat sbuf;
+ char *ndevbas, *lep;
+
+ if (fstat(fd, &sbuf) == -1)
+ err(1, "cannot stat device file descriptor");
+
+ strcpy(ndev, _PATH_DEV);
+ ndevbas = ndev + strlen(_PATH_DEV);
+ devname_r(sbuf.st_rdev, S_IFCHR, ndevbas,
+ sizeof(ndev) - strlen(_PATH_DEV));
+
+ if (strncmp(ndevbas, "fuse", 4))
+ errx(1, "mounting inappropriate device");
+
+ strtol(ndevbas + 4, &lep, 10);
+ if (*lep != '\0')
+ errx(1, "mounting inappropriate device");
+
+ dev = ndev;
+ }
+
+ if (argc > 0 || daemon_str) {
+ char *fds;
+
+ if (fd < 0 && (fd = open(dev, O_RDWR)) < 0)
+ err(1, "failed to open fuse device");
+
+ if (asprintf(&fds, "%d", fd) == -1)
+ err(1, "failed to allocate memory");
+ setenv("FUSE_DEV_FD", fds, 1);
+ free(fds);
+ setenv("FUSE_NO_MOUNT", "1", 1);
+
+ if (daemon_str) {
+ char *bgdaemon;
+ int len;
+
+ if (! daemon_opts)
+ daemon_opts = __DECONST(char *, "");
+
+ len = strlen(daemon_str) + 1 + strlen(daemon_opts) +
+ 2 + 1;
+ bgdaemon = calloc(1, len);
+
+ if (! bgdaemon)
+ err(1, "failed to allocate memory");
+
+ strlcpy(bgdaemon, daemon_str, len);
+ strlcat(bgdaemon, " ", len);
+ strlcat(bgdaemon, daemon_opts, len);
+ strlcat(bgdaemon, " &", len);
+
+ if (system(bgdaemon))
+ err(1, "failed to call fuse daemon");
+ } else {
+ if ((pid = fork()) < 0)
+ err(1, "failed to fork for fuse daemon");
+
+ if (pid == 0) {
+ execvp(argv[0], argv);
+ err(1, "failed to exec fuse daemon");
+ }
+ }
+ }
+
+ if (fd >= 0 && ! init_backgrounded() && close(fd) < 0) {
+ if (pid)
+ kill(pid, SIGKILL);
+ err(1, "failed to close fuse device");
+ }
+
+ /* Prepare the options vector for nmount(). build_iovec() is declared
+ * in mntopts.h. */
+ sprintf(fdstr, "%d", fd);
+ build_iovec(&iov, &iovlen, "fstype", __DECONST(void *, "fusefs"), -1);
+ build_iovec(&iov, &iovlen, "fspath", mntpath, -1);
+ build_iovec(&iov, &iovlen, "from", dev, -1);
+ build_iovec(&iov, &iovlen, "fd", fdstr, -1);
+
+ if (verbose)
+ fprintf(stderr, "mounting fuse daemon on device %s\n", dev);
+
+ if (nmount(iov, iovlen, mntflags) < 0)
+ err(EX_OSERR, "%s on %s", dev, mntpath);
+
+ exit(0);
+}
+
+void
+__usage_short(void) {
+ fprintf(stderr,
+ "usage:\n%s [-A|-S|-v|-V|-h|-D daemon|-O args|-s special|-m node|-o option...] special node [daemon args...]\n\n",
+ basename(progname));
+}
+
+void
+usage(void)
+{
+ struct mntopt *mo;
+
+ __usage_short();
+
+ fprintf(stderr, "known options:\n");
+ for (mo = mopts; mo->m_flag; ++mo)
+ fprintf(stderr, "\t%s\n", mo->m_option);
+
+ fprintf(stderr, "\n(use -h for a detailed description of these options)\n");
+ exit(EX_USAGE);
+}
+
+void
+helpmsg(void)
+{
+ if (! getenv("MOUNT_FUSEFS_CALL_BY_LIB")) {
+ __usage_short();
+ fprintf(stderr, "description of options:\n");
+ }
+
+ /*
+ * The main use case of this function is giving info embedded in general
+ * FUSE lib help output. Therefore the style and the content of the output
+ * tries to fit there as much as possible.
+ */
+ fprintf(stderr,
+ " -o allow_other allow access to other users\n"
+ /* " -o nonempty allow mounts over non-empty file/dir\n" */
+ " -o default_permissions enable permission checking by kernel\n"
+ /*
+ " -o fsname=NAME set filesystem name\n"
+ " -o large_read issue large read requests (2.4 only)\n"
+ */
+ " -o subtype=NAME set filesystem type\n"
+ " -o max_read=N set maximum size of read requests\n"
+ " -o noprivate allow secondary mounting of the filesystem\n"
+ " -o neglect_shares don't report EBUSY when unmount attempted\n"
+ " in presence of secondary mounts\n"
+ " -o push_symlinks_in prefix absolute symlinks with mountpoint\n"
+ " -o sync_unmount do unmount synchronously\n"
+ );
+ exit(EX_USAGE);
+}
+
+void
+showversion(void)
+{
+ puts("mount_fusefs [fuse4bsd] version: " FUSE4BSD_VERSION);
+ exit(EX_USAGE);
+}
+
+int
+init_backgrounded(void)
+{
+ int ibg;
+ size_t len;
+
+ len = sizeof(ibg);
+
+ if (sysctlbyname("vfs.fuse.init_backgrounded", &ibg, &len, NULL, 0))
+ return (0);
+
+ return (ibg);
+}
diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index 6b9d6aa..622cbbf 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -1003,6 +1003,7 @@ options NFSCLIENT #Network File System client
# The rest are optional:
options CD9660 #ISO 9660 filesystem
options FDESCFS #File descriptor filesystem
+options FUSE #FUSE support module
options HPFS #OS/2 File system
options MSDOSFS #MS DOS File System (FAT, FAT32)
options NFSSERVER #Network File System server
diff --git a/sys/conf/files b/sys/conf/files
index e9aeef3..812937c 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -2317,6 +2317,15 @@ fs/devfs/devfs_vnops.c standard
fs/fdescfs/fdesc_vfsops.c optional fdescfs
fs/fdescfs/fdesc_vnops.c optional fdescfs
fs/fifofs/fifo_vnops.c standard
+fs/fuse/fuse_device.c optional fuse
+fs/fuse/fuse_file.c optional fuse
+fs/fuse/fuse_internal.c optional fuse
+fs/fuse/fuse_io.c optional fuse
+fs/fuse/fuse_ipc.c optional fuse
+fs/fuse/fuse_main.c optional fuse
+fs/fuse/fuse_node.c optional fuse
+fs/fuse/fuse_vfsops.c optional fuse
+fs/fuse/fuse_vnops.c optional fuse
fs/hpfs/hpfs_alsubr.c optional hpfs
fs/hpfs/hpfs_lookup.c optional hpfs
fs/hpfs/hpfs_subr.c optional hpfs
diff --git a/sys/conf/options b/sys/conf/options
index 0ed9ce6..1b6aa50 100644
--- a/sys/conf/options
+++ b/sys/conf/options
@@ -211,6 +211,7 @@ CODA opt_dontuse.h
EXT2FS opt_dontuse.h
FDESCFS opt_dontuse.h
FFS opt_dontuse.h
+FUSE opt_dontuse.h
HPFS opt_dontuse.h
MSDOSFS opt_dontuse.h
NANDFS opt_dontuse.h
diff --git a/sys/fs/fuse/fuse.h b/sys/fs/fuse/fuse.h
new file mode 100644
index 0000000..ef9d561
--- /dev/null
+++ b/sys/fs/fuse/fuse.h
@@ -0,0 +1,223 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "fuse_kernel.h"
+
+#define FUSE_DEFAULT_DAEMON_TIMEOUT 60 /* s */
+#define FUSE_MIN_DAEMON_TIMEOUT 0 /* s */
+#define FUSE_MAX_DAEMON_TIMEOUT 600 /* s */
+
+#ifndef FUSE_FREEBSD_VERSION
+#define FUSE_FREEBSD_VERSION "0.4.4"
+#endif
+
+/* Mapping versions to features */
+
+#define FUSE_KERNELABI_GEQ(maj, min) \
+(FUSE_KERNEL_VERSION > (maj) || (FUSE_KERNEL_VERSION == (maj) && FUSE_KERNEL_MINOR_VERSION >= (min)))
+
+/*
+ * Appearance of new FUSE operations is not always in par with version
+ * numbering... At least, 7.3 is a sufficient condition for having
+ * FUSE_{ACCESS,CREATE}.
+ */
+#if FUSE_KERNELABI_GEQ(7, 3)
+#ifndef FUSE_HAS_ACCESS
+#define FUSE_HAS_ACCESS 1
+#endif
+#ifndef FUSE_HAS_CREATE
+#define FUSE_HAS_CREATE 1
+#endif
+#else /* FUSE_KERNELABI_GEQ(7, 3) */
+#ifndef FUSE_HAS_ACCESS
+#define FUSE_HAS_ACCESS 0
+#endif
+#ifndef FUSE_HAS_CREATE
+#define FUSE_HAS_CREATE 0
+#endif
+#endif
+
+#if FUSE_KERNELABI_GEQ(7, 7)
+#ifndef FUSE_HAS_GETLK
+#define FUSE_HAS_GETLK 1
+#endif
+#ifndef FUSE_HAS_SETLK
+#define FUSE_HAS_SETLK 1
+#endif
+#ifndef FUSE_HAS_SETLKW
+#define FUSE_HAS_SETLKW 1
+#endif
+#ifndef FUSE_HAS_INTERRUPT
+#define FUSE_HAS_INTERRUPT 1
+#endif
+#else /* FUSE_KERNELABI_GEQ(7, 7) */
+#ifndef FUSE_HAS_GETLK
+#define FUSE_HAS_GETLK 0
+#endif
+#ifndef FUSE_HAS_SETLK
+#define FUSE_HAS_SETLK 0
+#endif
+#ifndef FUSE_HAS_SETLKW
+#define FUSE_HAS_SETLKW 0
+#endif
+#ifndef FUSE_HAS_INTERRUPT
+#define FUSE_HAS_INTERRUPT 0
+#endif
+#endif
+
+#if FUSE_KERNELABI_GEQ(7, 8)
+#ifndef FUSE_HAS_FLUSH_RELEASE
+#define FUSE_HAS_FLUSH_RELEASE 1
+/*
+ * "DESTROY" came in the middle of the 7.8 era,
+ * so this is not completely exact...
+ */
+#ifndef FUSE_HAS_DESTROY
+#define FUSE_HAS_DESTROY 1
+#endif
+#endif
+#else /* FUSE_KERNELABI_GEQ(7, 8) */
+#ifndef FUSE_HAS_FLUSH_RELEASE
+#define FUSE_HAS_FLUSH_RELEASE 0
+#ifndef FUSE_HAS_DESTROY
+#define FUSE_HAS_DESTROY 0
+#endif
+#endif
+#endif
+
+/* misc */
+
+SYSCTL_DECL(_vfs_fuse);
+
+/* Fuse locking */
+
+extern struct mtx fuse_mtx;
+#define FUSE_LOCK() fuse_lck_mtx_lock(fuse_mtx)
+#define FUSE_UNLOCK() fuse_lck_mtx_unlock(fuse_mtx)
+
+#define RECTIFY_TDCR(td, cred) \
+do { \
+ if (! (td)) \
+ (td) = curthread; \
+ if (! (cred)) \
+ (cred) = (td)->td_ucred; \
+} while (0)
+
+/* Debug related stuff */
+
+#ifndef FUSE_DEBUG_DEVICE
+#define FUSE_DEBUG_DEVICE 0
+#endif
+
+#ifndef FUSE_DEBUG_FILE
+#define FUSE_DEBUG_FILE 0
+#endif
+
+#ifndef FUSE_DEBUG_INTERNAL
+#define FUSE_DEBUG_INTERNAL 0
+#endif
+
+#ifndef FUSE_DEBUG_IO
+#define FUSE_DEBUG_IO 0
+#endif
+
+#ifndef FUSE_DEBUG_IPC
+#define FUSE_DEBUG_IPC 0
+#endif
+
+#ifndef FUSE_DEBUG_LOCK
+#define FUSE_DEBUG_LOCK 0
+#endif
+
+#ifndef FUSE_DEBUG_VFSOPS
+#define FUSE_DEBUG_VFSOPS 0
+#endif
+
+#ifndef FUSE_DEBUG_VNOPS
+#define FUSE_DEBUG_VNOPS 0
+#endif
+
+#ifndef FUSE_TRACE
+#define FUSE_TRACE 0
+#endif
+
+#define DEBUGX(cond, fmt, ...) do { \
+ if (((cond))) { \
+ printf("%s: " fmt, __func__, ## __VA_ARGS__); \
+ } } while (0)
+
+#define fuse_lck_mtx_lock(mtx) do { \
+ DEBUGX(FUSE_DEBUG_LOCK, "0: lock(%s): %s@%d by %d\n", \
+ __STRING(mtx), __func__, __LINE__, curthread->td_proc->p_pid); \
+ mtx_lock(&(mtx)); \
+ DEBUGX(FUSE_DEBUG_LOCK, "1: lock(%s): %s@%d by %d\n", \
+ __STRING(mtx), __func__, __LINE__, curthread->td_proc->p_pid); \
+ } while (0)
+
+#define fuse_lck_mtx_unlock(mtx) do { \
+ DEBUGX(FUSE_DEBUG_LOCK, "0: unlock(%s): %s@%d by %d\n", \
+ __STRING(mtx), __func__, __LINE__, curthread->td_proc->p_pid); \
+ mtx_unlock(&(mtx)); \
+ DEBUGX(FUSE_DEBUG_LOCK, "1: unlock(%s): %s@%d by %d\n", \
+ __STRING(mtx), __func__, __LINE__, curthread->td_proc->p_pid); \
+ } while (0)
+
+void fuse_ipc_init(void);
+void fuse_ipc_destroy(void);
+
+int fuse_device_init(void);
+void fuse_device_destroy(void);
diff --git a/sys/fs/fuse/fuse_debug.h b/sys/fs/fuse/fuse_debug.h
new file mode 100644
index 0000000..3faf372
--- /dev/null
+++ b/sys/fs/fuse/fuse_debug.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+
+/* Debug related stuff */
+
+#ifndef FUSE_DEBUG_MODULE
+#error "FUSE_DEBUG_MODULE is not defined"
+#else
+#define FUSE_DEBUG_VAR __CONCAT(FUSE_DEBUG_,FUSE_DEBUG_MODULE)
+#endif
+
+#define DEBUG(fmt, ...) DEBUGX(FUSE_DEBUG_VAR >= 1, fmt, ## __VA_ARGS__)
+#define DEBUG2G(fmt, ...) DEBUGX(FUSE_DEBUG_VAR >= 2, fmt, ## __VA_ARGS__)
+
+#define debug_printf(fmt, ...) DEBUG(fmt, ## __VA_ARGS__)
+#define kdebug_printf(fmt, ...) DEBUG(fmt, ## __VA_ARGS__)
+
+#define fuse_trace_printf(fmt, ...) \
+ DEBUGX(FUSE_DEBUG_VAR && FUSE_TRACE, fmt, ## __VA_ARGS__)
+#define fuse_trace_printf_func() \
+ fuse_trace_printf("%s:%d\n", __FILE__, __LINE__)
+#define fuse_trace_printf_vfsop() fuse_trace_printf_func()
+#define fuse_trace_printf_vnop() fuse_trace_printf_func()
diff --git a/sys/fs/fuse/fuse_device.c b/sys/fs/fuse/fuse_device.c
new file mode 100644
index 0000000..0efc503
--- /dev/null
+++ b/sys/fs/fuse/fuse_device.c
@@ -0,0 +1,447 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/sx.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/fcntl.h>
+#include <sys/sysctl.h>
+#include <sys/poll.h>
+#include <sys/selinfo.h>
+
+#include "fuse.h"
+#include "fuse_ipc.h"
+
+#define FUSE_DEBUG_MODULE DEVICE
+#include "fuse_debug.h"
+
+static struct cdev *fuse_dev;
+
+static d_open_t fuse_device_open;
+static d_close_t fuse_device_close;
+static d_poll_t fuse_device_poll;
+static d_read_t fuse_device_read;
+static d_write_t fuse_device_write;
+
+static struct cdevsw fuse_device_cdevsw = {
+ .d_open = fuse_device_open,
+ .d_close = fuse_device_close,
+ .d_name = "fuse",
+ .d_poll = fuse_device_poll,
+ .d_read = fuse_device_read,
+ .d_write = fuse_device_write,
+ .d_version = D_VERSION,
+ .d_flags = D_NEEDMINOR,
+};
+
+/****************************
+ *
+ * >>> Fuse device op defs
+ *
+ ****************************/
+
+static void
+fdata_dtor(void *arg)
+{
+ struct fuse_data *fdata;
+
+ fdata = arg;
+ fdata_trydestroy(fdata);
+}
+
+/*
+ * Resources are set up on a per-open basis
+ */
+static int
+fuse_device_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
+{
+ struct fuse_data *fdata;
+ int error;
+
+ DEBUG("device %p\n", dev);
+
+ fdata = fdata_alloc(dev, td->td_ucred);
+ error = devfs_set_cdevpriv(fdata, fdata_dtor);
+ if (error != 0)
+ fdata_trydestroy(fdata);
+ else
+ DEBUG("%s: device opened by thread %d.\n", dev->si_name,
+ td->td_tid);
+ return (error);
+}
+
+static int
+fuse_device_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
+{
+ struct fuse_data *data;
+ struct fuse_ticket *tick;
+ int error;
+
+ error = devfs_get_cdevpriv((void **)&data);
+ if (error != 0)
+ return (error);
+ if (!data)
+ panic("no fuse data upon fuse device close");
+ fdata_set_dead(data);
+
+ FUSE_LOCK();
+ fuse_lck_mtx_lock(data->aw_mtx);
+ /* wakup poll()ers */
+ selwakeuppri(&data->ks_rsel, PZERO + 1);
+ /* Don't let syscall handlers wait in vain */
+ while ((tick = fuse_aw_pop(data))) {
+ fuse_lck_mtx_lock(tick->tk_aw_mtx);
+ fticket_set_answered(tick);
+ tick->tk_aw_errno = ENOTCONN;
+ wakeup(tick);
+ fuse_lck_mtx_unlock(tick->tk_aw_mtx);
+ FUSE_ASSERT_AW_DONE(tick);
+ fuse_ticket_drop(tick);
+ }
+ fuse_lck_mtx_unlock(data->aw_mtx);
+ FUSE_UNLOCK();
+
+ DEBUG("%s: device closed by thread %d.\n", dev->si_name, td->td_tid);
+ return (0);
+}
+
+int
+fuse_device_poll(struct cdev *dev, int events, struct thread *td)
+{
+ struct fuse_data *data;
+ int error, revents = 0;
+
+ error = devfs_get_cdevpriv((void **)&data);
+ if (error != 0)
+ return (events &
+ (POLLHUP|POLLIN|POLLRDNORM|POLLOUT|POLLWRNORM));
+
+ if (events & (POLLIN | POLLRDNORM)) {
+ fuse_lck_mtx_lock(data->ms_mtx);
+ if (fdata_get_dead(data) || STAILQ_FIRST(&data->ms_head))
+ revents |= events & (POLLIN | POLLRDNORM);
+ else
+ selrecord(td, &data->ks_rsel);
+ fuse_lck_mtx_unlock(data->ms_mtx);
+ }
+ if (events & (POLLOUT | POLLWRNORM)) {
+ revents |= events & (POLLOUT | POLLWRNORM);
+ }
+ return (revents);
+}
+
+/*
+ * fuse_device_read hangs on the queue of VFS messages.
+ * When it's notified that there is a new one, it picks that and
+ * passes up to the daemon
+ */
+int
+fuse_device_read(struct cdev *dev, struct uio *uio, int ioflag)
+{
+ int err;
+ struct fuse_data *data;
+ struct fuse_ticket *tick;
+ void *buf[] = {NULL, NULL, NULL};
+ int buflen[3];
+ int i;
+
+ DEBUG("fuse device being read on thread %d\n", uio->uio_td->td_tid);
+
+ err = devfs_get_cdevpriv((void **)&data);
+ if (err != 0)
+ return (err);
+
+ fuse_lck_mtx_lock(data->ms_mtx);
+again:
+ if (fdata_get_dead(data)) {
+ DEBUG2G("we know early on that reader should be kicked so we don't wait for news\n");
+ fuse_lck_mtx_unlock(data->ms_mtx);
+ return (ENODEV);
+ }
+ if (!(tick = fuse_ms_pop(data))) {
+ /* check if we may block */
+ if (ioflag & O_NONBLOCK) {
+ /* get outa here soon */
+ fuse_lck_mtx_unlock(data->ms_mtx);
+ return (EAGAIN);
+ } else {
+ err = msleep(data, &data->ms_mtx, PCATCH, "fu_msg", 0);
+ if (err != 0) {
+ fuse_lck_mtx_unlock(data->ms_mtx);
+ return (fdata_get_dead(data) ? ENODEV : err);
+ }
+ tick = fuse_ms_pop(data);
+ }
+ }
+ if (!tick) {
+ /*
+ * We can get here if fuse daemon suddenly terminates,
+ * eg, by being hit by a SIGKILL
+ * -- and some other cases, too, tho not totally clear, when
+ * (cv_signal/wakeup_one signals the whole process ?)
+ */
+ DEBUG("no message on thread #%d\n", uio->uio_td->td_tid);
+ goto again;
+ }
+ fuse_lck_mtx_unlock(data->ms_mtx);
+
+ if (fdata_get_dead(data)) {
+ /*
+ * somebody somewhere -- eg., umount routine --
+ * wants this liaison finished off
+ */
+ DEBUG2G("reader is to be sacked\n");
+ if (tick) {
+ DEBUG2G("weird -- \"kick\" is set tho there is message\n");
+ FUSE_ASSERT_MS_DONE(tick);
+ fuse_ticket_drop(tick);
+ }
+ return (ENODEV); /* This should make the daemon get off
+ * of us */
+ }
+ DEBUG("message got on thread #%d\n", uio->uio_td->td_tid);
+
+ KASSERT(tick->tk_ms_bufdata || tick->tk_ms_bufsize == 0,
+ ("non-null buf pointer with positive size"));
+
+ switch (tick->tk_ms_type) {
+ case FT_M_FIOV:
+ buf[0] = tick->tk_ms_fiov.base;
+ buflen[0] = tick->tk_ms_fiov.len;
+ break;
+ case FT_M_BUF:
+ buf[0] = tick->tk_ms_fiov.base;
+ buflen[0] = tick->tk_ms_fiov.len;
+ buf[1] = tick->tk_ms_bufdata;
+ buflen[1] = tick->tk_ms_bufsize;
+ break;
+ default:
+ panic("unknown message type for fuse_ticket %p", tick);
+ }
+
+ for (i = 0; buf[i]; i++) {
+ /*
+ * Why not ban mercilessly stupid daemons who can't keep up
+ * with us? (There is no much use of a partial read here...)
+ */
+ /*
+ * XXX note that in such cases Linux FUSE throws EIO at the
+ * syscall invoker and stands back to the message queue. The
+ * rationale should be made clear (and possibly adopt that
+ * behaviour). Keeping the current scheme at least makes
+ * fallacy as loud as possible...
+ */
+ if (uio->uio_resid < buflen[i]) {
+ fdata_set_dead(data);
+ DEBUG2G("daemon is stupid, kick it off...\n");
+ err = ENODEV;
+ break;
+ }
+ err = uiomove(buf[i], buflen[i], uio);
+ if (err)
+ break;
+ }
+
+ FUSE_ASSERT_MS_DONE(tick);
+ fuse_ticket_drop(tick);
+
+ return (err);
+}
+
+static __inline int
+fuse_ohead_audit(struct fuse_out_header *ohead, struct uio *uio)
+{
+ DEBUG("Out header -- len: %i, error: %i, unique: %llu; iovecs: %d\n",
+ ohead->len, ohead->error, (unsigned long long)ohead->unique,
+ uio->uio_iovcnt);
+
+ if (uio->uio_resid + sizeof(struct fuse_out_header) != ohead->len) {
+ DEBUG("Format error: body size differs from size claimed by header\n");
+ return (EINVAL);
+ }
+ if (uio->uio_resid && ohead->error) {
+ DEBUG("Format error: non zero error but message had a body\n");
+ return (EINVAL);
+ }
+ /* Sanitize the linuxism of negative errnos */
+ ohead->error = -(ohead->error);
+
+ return (0);
+}
+
+/*
+ * fuse_device_write first reads the header sent by the daemon.
+ * If that's OK, looks up ticket/callback node by the unique id seen in header.
+ * If the callback node contains a handler function, the uio is passed over
+ * that.
+ */
+static int
+fuse_device_write(struct cdev *dev, struct uio *uio, int ioflag)
+{
+ struct fuse_out_header ohead;
+ int err = 0;
+ struct fuse_data *data;
+ struct fuse_ticket *tick, *x_tick;
+ int found = 0;
+
+ DEBUG("resid: %zd, iovcnt: %d, thread: %d\n",
+ uio->uio_resid, uio->uio_iovcnt, uio->uio_td->td_tid);
+
+ err = devfs_get_cdevpriv((void **)&data);
+ if (err != 0)
+ return (err);
+
+ if (uio->uio_resid < sizeof(struct fuse_out_header)) {
+ DEBUG("got less than a header!\n");
+ fdata_set_dead(data);
+ return (EINVAL);
+ }
+ if ((err = uiomove(&ohead, sizeof(struct fuse_out_header), uio)) != 0)
+ return (err);
+
+ /*
+ * We check header information (which is redundant) and compare it
+ * with what we see. If we see some inconsistency we discard the
+ * whole answer and proceed on as if it had never existed. In
+ * particular, no pretender will be woken up, regardless the
+ * "unique" value in the header.
+ */
+ if ((err = fuse_ohead_audit(&ohead, uio))) {
+ fdata_set_dead(data);
+ return (err);
+ }
+ /* Pass stuff over to callback if there is one installed */
+
+ /* Looking for ticket with the unique id of header */
+ fuse_lck_mtx_lock(data->aw_mtx);
+ TAILQ_FOREACH_SAFE(tick, &data->aw_head, tk_aw_link,
+ x_tick) {
+ DEBUG("bumped into callback #%llu\n",
+ (unsigned long long)tick->tk_unique);
+ if (tick->tk_unique == ohead.unique) {
+ found = 1;
+ fuse_aw_remove(tick);
+ break;
+ }
+ }
+ fuse_lck_mtx_unlock(data->aw_mtx);
+
+ if (found) {
+ if (tick->tk_aw_handler) {
+ /*
+ * We found a callback with proper handler. In this
+ * case the out header will be 0wnd by the callback,
+ * so the fun of freeing that is left for her.
+ * (Then, by all chance, she'll just get that's done
+ * via ticket_drop(), so no manual mucking
+ * around...)
+ */
+ DEBUG("pass ticket to a callback\n");
+ memcpy(&tick->tk_aw_ohead, &ohead, sizeof(ohead));
+ err = tick->tk_aw_handler(tick, uio);
+ } else {
+ /* pretender doesn't wanna do anything with answer */
+ DEBUG("stuff devalidated, so we drop it\n");
+ }
+
+ /*
+ * As aw_mtx was not held during the callback execution the
+ * ticket may have been inserted again. However, this is safe
+ * because fuse_ticket_drop() will deal with refcount anyway.
+ */
+ fuse_ticket_drop(tick);
+ } else {
+ /* no callback at all! */
+ DEBUG("erhm, no handler for this response\n");
+ err = EINVAL;
+ }
+
+ return (err);
+}
+
+int
+fuse_device_init(void)
+{
+
+ fuse_dev = make_dev(&fuse_device_cdevsw, 0, UID_ROOT, GID_OPERATOR,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP, "fuse");
+ if (fuse_dev == NULL)
+ return (ENOMEM);
+ return (0);
+}
+
+void
+fuse_device_destroy(void)
+{
+
+ MPASS(fuse_dev != NULL);
+ destroy_dev(fuse_dev);
+}
diff --git a/sys/fs/fuse/fuse_file.c b/sys/fs/fuse/fuse_file.c
new file mode 100644
index 0000000..dda9149
--- /dev/null
+++ b/sys/fs/fuse/fuse_file.c
@@ -0,0 +1,260 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/sx.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/sysctl.h>
+
+#include "fuse.h"
+#include "fuse_file.h"
+#include "fuse_internal.h"
+#include "fuse_ipc.h"
+#include "fuse_node.h"
+
+#define FUSE_DEBUG_MODULE FILE
+#include "fuse_debug.h"
+
+static int fuse_fh_count = 0;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, filehandle_count, CTLFLAG_RD,
+ &fuse_fh_count, 0, "");
+
+int
+fuse_filehandle_open(struct vnode *vp,
+ fufh_type_t fufh_type,
+ struct fuse_filehandle **fufhp,
+ struct thread *td,
+ struct ucred *cred)
+{
+ struct fuse_dispatcher fdi;
+ struct fuse_open_in *foi;
+ struct fuse_open_out *foo;
+
+ int err = 0;
+ int isdir = 0;
+ int oflags = 0;
+ int op = FUSE_OPEN;
+
+ fuse_trace_printf("fuse_filehandle_open(vp=%p, fufh_type=%d)\n",
+ vp, fufh_type);
+
+ if (fuse_filehandle_valid(vp, fufh_type)) {
+ panic("FUSE: filehandle_open called despite valid fufh (type=%d)",
+ fufh_type);
+ /* NOTREACHED */
+ }
+ /*
+ * Note that this means we are effectively FILTERING OUT open() flags.
+ */
+ oflags = fuse_filehandle_xlate_to_oflags(fufh_type);
+
+ if (vnode_isdir(vp)) {
+ isdir = 1;
+ op = FUSE_OPENDIR;
+ if (fufh_type != FUFH_RDONLY) {
+ printf("FUSE:non-rdonly fh requested for a directory?\n");
+ fufh_type = FUFH_RDONLY;
+ }
+ }
+ fdisp_init(&fdi, sizeof(*foi));
+ fdisp_make_vp(&fdi, op, vp, td, cred);
+
+ foi = fdi.indata;
+ foi->flags = oflags;
+
+ if ((err = fdisp_wait_answ(&fdi))) {
+ debug_printf("OUCH ... daemon didn't give fh (err = %d)\n", err);
+ if (err == ENOENT) {
+ fuse_internal_vnode_disappear(vp);
+ }
+ goto out;
+ }
+ foo = fdi.answ;
+
+ fuse_filehandle_init(vp, fufh_type, fufhp, foo->fh);
+ fuse_vnode_open(vp, foo->open_flags, td);
+
+out:
+ fdisp_destroy(&fdi);
+ return err;
+}
+
+int
+fuse_filehandle_close(struct vnode *vp,
+ fufh_type_t fufh_type,
+ struct thread *td,
+ struct ucred *cred)
+{
+ struct fuse_dispatcher fdi;
+ struct fuse_release_in *fri;
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct fuse_filehandle *fufh = NULL;
+
+ int err = 0;
+ int isdir = 0;
+ int op = FUSE_RELEASE;
+
+ fuse_trace_printf("fuse_filehandle_put(vp=%p, fufh_type=%d)\n",
+ vp, fufh_type);
+
+ fufh = &(fvdat->fufh[fufh_type]);
+ if (!FUFH_IS_VALID(fufh)) {
+ panic("FUSE: filehandle_put called on invalid fufh (type=%d)",
+ fufh_type);
+ /* NOTREACHED */
+ }
+ if (fuse_isdeadfs(vp)) {
+ goto out;
+ }
+ if (vnode_isdir(vp)) {
+ op = FUSE_RELEASEDIR;
+ isdir = 1;
+ }
+ fdisp_init(&fdi, sizeof(*fri));
+ fdisp_make_vp(&fdi, op, vp, td, cred);
+ fri = fdi.indata;
+ fri->fh = fufh->fh_id;
+ fri->flags = fuse_filehandle_xlate_to_oflags(fufh_type);
+
+ err = fdisp_wait_answ(&fdi);
+ fdisp_destroy(&fdi);
+
+out:
+ atomic_subtract_acq_int(&fuse_fh_count, 1);
+ fufh->fh_id = (uint64_t)-1;
+ fufh->fh_type = FUFH_INVALID;
+ fuse_invalidate_attr(vp);
+
+ return err;
+}
+
+int
+fuse_filehandle_valid(struct vnode *vp, fufh_type_t fufh_type)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct fuse_filehandle *fufh;
+
+ fufh = &(fvdat->fufh[fufh_type]);
+ return FUFH_IS_VALID(fufh);
+}
+
+int
+fuse_filehandle_get(struct vnode *vp, fufh_type_t fufh_type,
+ struct fuse_filehandle **fufhp)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct fuse_filehandle *fufh;
+
+ fufh = &(fvdat->fufh[fufh_type]);
+ if (!FUFH_IS_VALID(fufh))
+ return EBADF;
+ if (fufhp != NULL)
+ *fufhp = fufh;
+ return 0;
+}
+
+int
+fuse_filehandle_getrw(struct vnode *vp, fufh_type_t fufh_type,
+ struct fuse_filehandle **fufhp)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct fuse_filehandle *fufh;
+
+ fufh = &(fvdat->fufh[fufh_type]);
+ if (!FUFH_IS_VALID(fufh)) {
+ fufh_type = FUFH_RDWR;
+ }
+ return fuse_filehandle_get(vp, fufh_type, fufhp);
+}
+
+void
+fuse_filehandle_init(struct vnode *vp,
+ fufh_type_t fufh_type,
+ struct fuse_filehandle **fufhp,
+ uint64_t fh_id)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct fuse_filehandle *fufh;
+
+ DEBUG("id=%jd type=%d\n", (intmax_t)fh_id, fufh_type);
+ fufh = &(fvdat->fufh[fufh_type]);
+ MPASS(!FUFH_IS_VALID(fufh));
+ fufh->fh_id = fh_id;
+ fufh->fh_type = fufh_type;
+ if (!FUFH_IS_VALID(fufh)) {
+ panic("FUSE: init: invalid filehandle id (type=%d)", fufh_type);
+ }
+ if (fufhp != NULL)
+ *fufhp = fufh;
+
+ atomic_add_acq_int(&fuse_fh_count, 1);
+}
diff --git a/sys/fs/fuse/fuse_file.h b/sys/fs/fuse/fuse_file.h
new file mode 100644
index 0000000..7d605ee
--- /dev/null
+++ b/sys/fs/fuse/fuse_file.h
@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _FUSE_FILE_H_
+#define _FUSE_FILE_H_
+
+#include <sys/types.h>
+#include <sys/fcntl.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/vnode.h>
+
+typedef enum fufh_type {
+ FUFH_INVALID = -1,
+ FUFH_RDONLY = 0,
+ FUFH_WRONLY = 1,
+ FUFH_RDWR = 2,
+ FUFH_MAXTYPE = 3,
+} fufh_type_t;
+
+struct fuse_filehandle {
+ uint64_t fh_id;
+ fufh_type_t fh_type;
+};
+
+#define FUFH_IS_VALID(f) ((f)->fh_type != FUFH_INVALID)
+
+static __inline__
+fufh_type_t
+fuse_filehandle_xlate_from_mmap(int fflags)
+{
+ if (fflags & (PROT_READ | PROT_WRITE)) {
+ return FUFH_RDWR;
+ } else if (fflags & (PROT_WRITE)) {
+ return FUFH_WRONLY;
+ } else if ((fflags & PROT_READ) || (fflags & PROT_EXEC)) {
+ return FUFH_RDONLY;
+ } else {
+ return FUFH_INVALID;
+ }
+}
+
+static __inline__
+fufh_type_t
+fuse_filehandle_xlate_from_fflags(int fflags)
+{
+ if ((fflags & FREAD) && (fflags & FWRITE)) {
+ return FUFH_RDWR;
+ } else if (fflags & (FWRITE)) {
+ return FUFH_WRONLY;
+ } else if (fflags & (FREAD)) {
+ return FUFH_RDONLY;
+ } else {
+ panic("FUSE: What kind of a flag is this (%x)?", fflags);
+ }
+}
+
+static __inline__
+int
+fuse_filehandle_xlate_to_oflags(fufh_type_t type)
+{
+ int oflags = -1;
+
+ switch (type) {
+
+ case FUFH_RDONLY:
+ oflags = O_RDONLY;
+ break;
+
+ case FUFH_WRONLY:
+ oflags = O_WRONLY;
+ break;
+
+ case FUFH_RDWR:
+ oflags = O_RDWR;
+ break;
+
+ default:
+ break;
+ }
+
+ return oflags;
+}
+
+int fuse_filehandle_valid(struct vnode *vp, fufh_type_t fufh_type);
+int fuse_filehandle_get(struct vnode *vp, fufh_type_t fufh_type,
+ struct fuse_filehandle **fufhp);
+int fuse_filehandle_getrw(struct vnode *vp, fufh_type_t fufh_type,
+ struct fuse_filehandle **fufhp);
+
+void fuse_filehandle_init(struct vnode *vp, fufh_type_t fufh_type,
+ struct fuse_filehandle **fufhp, uint64_t fh_id);
+int fuse_filehandle_open(struct vnode *vp, fufh_type_t fufh_type,
+ struct fuse_filehandle **fufhp, struct thread *td,
+ struct ucred *cred);
+int fuse_filehandle_close(struct vnode *vp, fufh_type_t fufh_type,
+ struct thread *td, struct ucred *cred);
+
+#endif /* _FUSE_FILE_H_ */
diff --git a/sys/fs/fuse/fuse_internal.c b/sys/fs/fuse/fuse_internal.c
new file mode 100644
index 0000000..96496c7
--- /dev/null
+++ b/sys/fs/fuse/fuse_internal.c
@@ -0,0 +1,696 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/sx.h>
+#include <sys/proc.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/namei.h>
+#include <sys/stat.h>
+#include <sys/unistd.h>
+#include <sys/filedesc.h>
+#include <sys/file.h>
+#include <sys/fcntl.h>
+#include <sys/dirent.h>
+#include <sys/bio.h>
+#include <sys/buf.h>
+#include <sys/sysctl.h>
+#include <sys/priv.h>
+
+#include "fuse.h"
+#include "fuse_file.h"
+#include "fuse_internal.h"
+#include "fuse_ipc.h"
+#include "fuse_node.h"
+#include "fuse_file.h"
+#include "fuse_param.h"
+
+#define FUSE_DEBUG_MODULE INTERNAL
+#include "fuse_debug.h"
+
+#ifdef ZERO_PAD_INCOMPLETE_BUFS
+static int isbzero(void *buf, size_t len);
+
+#endif
+
+/* access */
+
+int
+fuse_internal_access(struct vnode *vp,
+ mode_t mode,
+ struct fuse_access_param *facp,
+ struct thread *td,
+ struct ucred *cred)
+{
+ int err = 0;
+ uint32_t mask = 0;
+ int dataflags;
+ int vtype;
+ struct mount *mp;
+ struct fuse_dispatcher fdi;
+ struct fuse_access_in *fai;
+ struct fuse_data *data;
+
+ /* NOT YET DONE */
+ /*
+ * If this vnop gives you trouble, just return 0 here for a lazy
+ * kludge.
+ */
+ /* return 0;*/
+
+ fuse_trace_printf_func();
+
+ mp = vnode_mount(vp);
+ vtype = vnode_vtype(vp);
+
+ data = fuse_get_mpdata(mp);
+ dataflags = data->dataflags;
+
+ if ((mode & VWRITE) && vfs_isrdonly(mp)) {
+ return EACCES;
+ }
+ /* Unless explicitly permitted, deny everyone except the fs owner. */
+ if (vnode_isvroot(vp) && !(facp->facc_flags & FACCESS_NOCHECKSPY)) {
+ if (!(dataflags & FSESS_DAEMON_CAN_SPY)) {
+ int denied = fuse_match_cred(data->daemoncred,
+ cred);
+
+ if (denied) {
+ return EPERM;
+ }
+ }
+ facp->facc_flags |= FACCESS_NOCHECKSPY;
+ }
+ if (!(facp->facc_flags & FACCESS_DO_ACCESS)) {
+ return 0;
+ }
+ if (((vtype == VREG) && (mode & VEXEC))) {
+#ifdef NEED_MOUNT_ARGUMENT_FOR_THIS
+ /* Let the kernel handle this through open / close heuristics.*/
+ return ENOTSUP;
+#else
+ /* Let the kernel handle this. */
+ return 0;
+#endif
+ }
+ if (!fsess_isimpl(mp, FUSE_ACCESS)) {
+ /* Let the kernel handle this. */
+ return 0;
+ }
+ if (dataflags & FSESS_DEFAULT_PERMISSIONS) {
+ /* Let the kernel handle this. */
+ return 0;
+ }
+ if ((mode & VADMIN) != 0) {
+ err = priv_check_cred(cred, PRIV_VFS_ADMIN, 0);
+ if (err) {
+ return err;
+ }
+ }
+ if ((mode & (VWRITE | VAPPEND | VADMIN)) != 0) {
+ mask |= W_OK;
+ }
+ if ((mode & VREAD) != 0) {
+ mask |= R_OK;
+ }
+ if ((mode & VEXEC) != 0) {
+ mask |= X_OK;
+ }
+ bzero(&fdi, sizeof(fdi));
+
+ fdisp_init(&fdi, sizeof(*fai));
+ fdisp_make_vp(&fdi, FUSE_ACCESS, vp, td, cred);
+
+ fai = fdi.indata;
+ fai->mask = F_OK;
+ fai->mask |= mask;
+
+ err = fdisp_wait_answ(&fdi);
+ fdisp_destroy(&fdi);
+
+ if (err == ENOSYS) {
+ fsess_set_notimpl(mp, FUSE_ACCESS);
+ err = 0;
+ }
+ return err;
+}
+
+/* fsync */
+
+int
+fuse_internal_fsync_callback(struct fuse_ticket *tick, struct uio *uio)
+{
+ fuse_trace_printf_func();
+
+ if (tick->tk_aw_ohead.error == ENOSYS) {
+ fsess_set_notimpl(tick->tk_data->mp, fticket_opcode(tick));
+ }
+ return 0;
+}
+
+int
+fuse_internal_fsync(struct vnode *vp,
+ struct thread *td,
+ struct ucred *cred,
+ struct fuse_filehandle *fufh)
+{
+ int op = FUSE_FSYNC;
+ struct fuse_fsync_in *ffsi;
+ struct fuse_dispatcher fdi;
+
+ fuse_trace_printf_func();
+
+ if (vnode_isdir(vp)) {
+ op = FUSE_FSYNCDIR;
+ }
+ fdisp_init(&fdi, sizeof(*ffsi));
+ fdisp_make_vp(&fdi, op, vp, td, cred);
+ ffsi = fdi.indata;
+ ffsi->fh = fufh->fh_id;
+
+ ffsi->fsync_flags = 1; /* datasync */
+
+ fuse_insert_callback(fdi.tick, fuse_internal_fsync_callback);
+ fuse_insert_message(fdi.tick);
+
+ fdisp_destroy(&fdi);
+
+ return 0;
+
+}
+
+/* readdir */
+
+int
+fuse_internal_readdir(struct vnode *vp,
+ struct uio *uio,
+ struct fuse_filehandle *fufh,
+ struct fuse_iov *cookediov)
+{
+ int err = 0;
+ struct fuse_dispatcher fdi;
+ struct fuse_read_in *fri;
+
+ if (uio_resid(uio) == 0) {
+ return 0;
+ }
+ fdisp_init(&fdi, 0);
+
+ /*
+ * Note that we DO NOT have a UIO_SYSSPACE here (so no need for p2p
+ * I/O).
+ */
+
+ while (uio_resid(uio) > 0) {
+
+ fdi.iosize = sizeof(*fri);
+ fdisp_make_vp(&fdi, FUSE_READDIR, vp, NULL, NULL);
+
+ fri = fdi.indata;
+ fri->fh = fufh->fh_id;
+ fri->offset = uio_offset(uio);
+ fri->size = min(uio_resid(uio), FUSE_DEFAULT_IOSIZE);
+ /* mp->max_read */
+
+ if ((err = fdisp_wait_answ(&fdi))) {
+ break;
+ }
+ if ((err = fuse_internal_readdir_processdata(uio, fri->size, fdi.answ,
+ fdi.iosize, cookediov))) {
+ break;
+ }
+ }
+
+ fdisp_destroy(&fdi);
+ return ((err == -1) ? 0 : err);
+}
+
+int
+fuse_internal_readdir_processdata(struct uio *uio,
+ size_t reqsize,
+ void *buf,
+ size_t bufsize,
+ void *param)
+{
+ int err = 0;
+ int cou = 0;
+ int bytesavail;
+ size_t freclen;
+
+ struct dirent *de;
+ struct fuse_dirent *fudge;
+ struct fuse_iov *cookediov = param;
+
+ if (bufsize < FUSE_NAME_OFFSET) {
+ return -1;
+ }
+ for (;;) {
+
+ if (bufsize < FUSE_NAME_OFFSET) {
+ err = -1;
+ break;
+ }
+ fudge = (struct fuse_dirent *)buf;
+ freclen = FUSE_DIRENT_SIZE(fudge);
+
+ cou++;
+
+ if (bufsize < freclen) {
+ err = ((cou == 1) ? -1 : 0);
+ break;
+ }
+#ifdef ZERO_PAD_INCOMPLETE_BUFS
+ if (isbzero(buf, FUSE_NAME_OFFSET)) {
+ err = -1;
+ break;
+ }
+#endif
+
+ if (!fudge->namelen || fudge->namelen > MAXNAMLEN) {
+ err = EINVAL;
+ break;
+ }
+ bytesavail = GENERIC_DIRSIZ((struct pseudo_dirent *)
+ &fudge->namelen);
+
+ if (bytesavail > uio_resid(uio)) {
+ err = -1;
+ break;
+ }
+ fiov_refresh(cookediov);
+ fiov_adjust(cookediov, bytesavail);
+
+ de = (struct dirent *)cookediov->base;
+ de->d_fileno = fudge->ino; /* XXX: truncation */
+ de->d_reclen = bytesavail;
+ de->d_type = fudge->type;
+ de->d_namlen = fudge->namelen;
+ memcpy((char *)cookediov->base + sizeof(struct dirent) -
+ MAXNAMLEN - 1,
+ (char *)buf + FUSE_NAME_OFFSET, fudge->namelen);
+ ((char *)cookediov->base)[bytesavail] = '\0';
+
+ err = uiomove(cookediov->base, cookediov->len, uio);
+ if (err) {
+ break;
+ }
+ buf = (char *)buf + freclen;
+ bufsize -= freclen;
+ uio_setoffset(uio, fudge->off);
+ }
+
+ return err;
+}
+
+/* remove */
+
+#ifdef XXXIP
+static int
+fuse_internal_remove_callback(struct vnode *vp, void *cargs)
+{
+ struct vattr *vap;
+ uint64_t target_nlink;
+
+ vap = VTOVA(vp);
+
+ target_nlink = *(uint64_t *)cargs;
+
+ /* somewhat lame "heuristics", but you got better ideas? */
+ if ((vap->va_nlink == target_nlink) && vnode_isreg(vp)) {
+ fuse_invalidate_attr(vp);
+ }
+ return 0;
+}
+
+#endif
+
+#define INVALIDATE_CACHED_VATTRS_UPON_UNLINK 1
+int
+fuse_internal_remove(struct vnode *dvp,
+ struct vnode *vp,
+ struct componentname *cnp,
+ enum fuse_opcode op)
+{
+ struct fuse_dispatcher fdi;
+
+ struct vattr *vap = VTOVA(vp);
+
+#if INVALIDATE_CACHED_VATTRS_UPON_UNLINK
+ int need_invalidate = 0;
+ uint64_t target_nlink = 0;
+
+#endif
+ int err = 0;
+
+ debug_printf("dvp=%p, cnp=%p, op=%d\n", vp, cnp, op);
+
+ fdisp_init(&fdi, cnp->cn_namelen + 1);
+ fdisp_make_vp(&fdi, op, dvp, cnp->cn_thread, cnp->cn_cred);
+
+ memcpy(fdi.indata, cnp->cn_nameptr, cnp->cn_namelen);
+ ((char *)fdi.indata)[cnp->cn_namelen] = '\0';
+
+#if INVALIDATE_CACHED_VATTRS_UPON_UNLINK
+ if (vap->va_nlink > 1) {
+ need_invalidate = 1;
+ target_nlink = vap->va_nlink;
+ }
+#endif
+
+ err = fdisp_wait_answ(&fdi);
+ fdisp_destroy(&fdi);
+
+ fuse_invalidate_attr(dvp);
+ fuse_invalidate_attr(vp);
+
+#ifdef XXXIP
+ /*
+ * XXX: INVALIDATE_CACHED_VATTRS_UPON_UNLINK
+ *
+ * Consider the case where vap->va_nlink > 1 for the entity being
+ * removed. In our world, other in-memory vnodes that share a link
+ * count each with this one may not know right way that this one just
+ * got deleted. We should let them know, say, through a vnode_iterate()
+ * here and a callback that does fuse_invalidate_attr(vp) on each
+ * relevant vnode.
+ */
+ if (need_invalidate && !err) {
+ vnode_iterate(vnode_mount(vp), 0, fuse_internal_remove_callback,
+ (void *)&target_nlink);
+ }
+#endif
+
+ return err;
+}
+
+/* rename */
+
+int
+fuse_internal_rename(struct vnode *fdvp,
+ struct componentname *fcnp,
+ struct vnode *tdvp,
+ struct componentname *tcnp)
+{
+ struct fuse_dispatcher fdi;
+ struct fuse_rename_in *fri;
+ int err = 0;
+
+ fdisp_init(&fdi, sizeof(*fri) + fcnp->cn_namelen + tcnp->cn_namelen + 2);
+ fdisp_make_vp(&fdi, FUSE_RENAME, fdvp, tcnp->cn_thread, tcnp->cn_cred);
+
+ fri = fdi.indata;
+ fri->newdir = VTOI(tdvp);
+ memcpy((char *)fdi.indata + sizeof(*fri), fcnp->cn_nameptr,
+ fcnp->cn_namelen);
+ ((char *)fdi.indata)[sizeof(*fri) + fcnp->cn_namelen] = '\0';
+ memcpy((char *)fdi.indata + sizeof(*fri) + fcnp->cn_namelen + 1,
+ tcnp->cn_nameptr, tcnp->cn_namelen);
+ ((char *)fdi.indata)[sizeof(*fri) + fcnp->cn_namelen +
+ tcnp->cn_namelen + 1] = '\0';
+
+ err = fdisp_wait_answ(&fdi);
+ fdisp_destroy(&fdi);
+
+ fuse_invalidate_attr(fdvp);
+ if (tdvp != fdvp) {
+ fuse_invalidate_attr(tdvp);
+ }
+ return err;
+}
+
+/* strategy */
+
+/* entity creation */
+
+void
+fuse_internal_newentry_makerequest(struct mount *mp,
+ uint64_t dnid,
+ struct componentname *cnp,
+ enum fuse_opcode op,
+ void *buf,
+ size_t bufsize,
+ struct fuse_dispatcher *fdip)
+{
+ debug_printf("fdip=%p\n", fdip);
+
+ fdip->iosize = bufsize + cnp->cn_namelen + 1;
+
+ fdisp_make(fdip, op, mp, dnid, cnp->cn_thread, cnp->cn_cred);
+ memcpy(fdip->indata, buf, bufsize);
+ memcpy((char *)fdip->indata + bufsize, cnp->cn_nameptr, cnp->cn_namelen);
+ ((char *)fdip->indata)[bufsize + cnp->cn_namelen] = '\0';
+}
+
+int
+fuse_internal_newentry_core(struct vnode *dvp,
+ struct vnode **vpp,
+ struct componentname *cnp,
+ enum vtype vtyp,
+ struct fuse_dispatcher *fdip)
+{
+ int err = 0;
+ struct fuse_entry_out *feo;
+ struct mount *mp = vnode_mount(dvp);
+
+ if ((err = fdisp_wait_answ(fdip))) {
+ return err;
+ }
+ feo = fdip->answ;
+
+ if ((err = fuse_internal_checkentry(feo, vtyp))) {
+ return err;
+ }
+ err = fuse_vnode_get(mp, feo->nodeid, dvp, vpp, cnp, vtyp);
+ if (err) {
+ fuse_internal_forget_send(mp, cnp->cn_thread, cnp->cn_cred,
+ feo->nodeid, 1);
+ return err;
+ }
+ cache_attrs(*vpp, feo);
+
+ return err;
+}
+
+int
+fuse_internal_newentry(struct vnode *dvp,
+ struct vnode **vpp,
+ struct componentname *cnp,
+ enum fuse_opcode op,
+ void *buf,
+ size_t bufsize,
+ enum vtype vtype)
+{
+ int err;
+ struct fuse_dispatcher fdi;
+ struct mount *mp = vnode_mount(dvp);
+
+ fdisp_init(&fdi, 0);
+ fuse_internal_newentry_makerequest(mp, VTOI(dvp), cnp, op, buf,
+ bufsize, &fdi);
+ err = fuse_internal_newentry_core(dvp, vpp, cnp, vtype, &fdi);
+ fdisp_destroy(&fdi);
+ fuse_invalidate_attr(dvp);
+
+ return err;
+}
+
+/* entity destruction */
+
+int
+fuse_internal_forget_callback(struct fuse_ticket *ftick, struct uio *uio)
+{
+ fuse_internal_forget_send(ftick->tk_data->mp, curthread, NULL,
+ ((struct fuse_in_header *)ftick->tk_ms_fiov.base)->nodeid, 1);
+
+ return 0;
+}
+
+void
+fuse_internal_forget_send(struct mount *mp,
+ struct thread *td,
+ struct ucred *cred,
+ uint64_t nodeid,
+ uint64_t nlookup)
+{
+
+ struct fuse_dispatcher fdi;
+ struct fuse_forget_in *ffi;
+
+ debug_printf("mp=%p, nodeid=%ju, nlookup=%ju\n",
+ mp, (uintmax_t)nodeid, (uintmax_t)nlookup);
+
+ /*
+ * KASSERT(nlookup > 0, ("zero-times forget for vp #%llu",
+ * (long long unsigned) nodeid));
+ */
+
+ fdisp_init(&fdi, sizeof(*ffi));
+ fdisp_make(&fdi, FUSE_FORGET, mp, nodeid, td, cred);
+
+ ffi = fdi.indata;
+ ffi->nlookup = nlookup;
+
+ fuse_insert_message(fdi.tick);
+ fdisp_destroy(&fdi);
+}
+
+void
+fuse_internal_vnode_disappear(struct vnode *vp)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+
+ ASSERT_VOP_ELOCKED(vp, "fuse_internal_vnode_disappear");
+ fvdat->flag |= FN_REVOKED;
+ cache_purge(vp);
+}
+
+/* fuse start/stop */
+
+int
+fuse_internal_init_callback(struct fuse_ticket *tick, struct uio *uio)
+{
+ int err = 0;
+ struct fuse_data *data = tick->tk_data;
+ struct fuse_init_out *fiio;
+
+ if ((err = tick->tk_aw_ohead.error)) {
+ goto out;
+ }
+ if ((err = fticket_pull(tick, uio))) {
+ goto out;
+ }
+ fiio = fticket_resp(tick)->base;
+
+ /* XXX: Do we want to check anything further besides this? */
+ if (fiio->major < 7) {
+ debug_printf("userpace version too low\n");
+ err = EPROTONOSUPPORT;
+ goto out;
+ }
+ data->fuse_libabi_major = fiio->major;
+ data->fuse_libabi_minor = fiio->minor;
+
+ if (fuse_libabi_geq(data, 7, 5)) {
+ if (fticket_resp(tick)->len == sizeof(struct fuse_init_out)) {
+ data->max_write = fiio->max_write;
+ } else {
+ err = EINVAL;
+ }
+ } else {
+ /* Old fix values */
+ data->max_write = 4096;
+ }
+
+out:
+ if (err) {
+ fdata_set_dead(data);
+ }
+ FUSE_LOCK();
+ data->dataflags |= FSESS_INITED;
+ wakeup(&data->ticketer);
+ FUSE_UNLOCK();
+
+ return 0;
+}
+
+void
+fuse_internal_send_init(struct fuse_data *data, struct thread *td)
+{
+ struct fuse_init_in *fiii;
+ struct fuse_dispatcher fdi;
+
+ fdisp_init(&fdi, sizeof(*fiii));
+ fdisp_make(&fdi, FUSE_INIT, data->mp, 0, td, NULL);
+ fiii = fdi.indata;
+ fiii->major = FUSE_KERNEL_VERSION;
+ fiii->minor = FUSE_KERNEL_MINOR_VERSION;
+ fiii->max_readahead = FUSE_DEFAULT_IOSIZE * 16;
+ fiii->flags = 0;
+
+ fuse_insert_callback(fdi.tick, fuse_internal_init_callback);
+ fuse_insert_message(fdi.tick);
+ fdisp_destroy(&fdi);
+}
+
+#ifdef ZERO_PAD_INCOMPLETE_BUFS
+static int
+isbzero(void *buf, size_t len)
+{
+ int i;
+
+ for (i = 0; i < len; i++) {
+ if (((char *)buf)[i])
+ return (0);
+ }
+
+ return (1);
+}
+
+#endif
diff --git a/sys/fs/fuse/fuse_internal.h b/sys/fs/fuse/fuse_internal.h
new file mode 100644
index 0000000..9cf20e9
--- /dev/null
+++ b/sys/fs/fuse/fuse_internal.h
@@ -0,0 +1,393 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _FUSE_INTERNAL_H_
+#define _FUSE_INTERNAL_H_
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/stat.h>
+#include <sys/vnode.h>
+
+#include "fuse_ipc.h"
+#include "fuse_node.h"
+
+static __inline int
+vfs_isrdonly(struct mount *mp)
+{
+ return ((mp->mnt_flag & MNT_RDONLY) != 0 ? 1 : 0);
+}
+
+static __inline struct mount *
+vnode_mount(struct vnode *vp)
+{
+ return (vp->v_mount);
+}
+
+static __inline int
+vnode_mountedhere(struct vnode *vp)
+{
+ return (vp->v_mountedhere != NULL ? 1 : 0);
+}
+
+static __inline enum vtype
+vnode_vtype(struct vnode *vp)
+{
+ return (vp->v_type);
+}
+
+static __inline int
+vnode_isvroot(struct vnode *vp)
+{
+ return ((vp->v_vflag & VV_ROOT) != 0 ? 1 : 0);
+}
+
+static __inline int
+vnode_isreg(struct vnode *vp)
+{
+ return (vp->v_type == VREG ? 1 : 0);
+}
+
+static __inline int
+vnode_isdir(struct vnode *vp)
+{
+ return (vp->v_type == VDIR ? 1 : 0);
+}
+
+static __inline int
+vnode_islnk(struct vnode *vp)
+{
+ return (vp->v_type == VLNK ? 1 : 0);
+}
+
+static __inline ssize_t
+uio_resid(struct uio *uio)
+{
+ return (uio->uio_resid);
+}
+
+static __inline off_t
+uio_offset(struct uio *uio)
+{
+ return (uio->uio_offset);
+}
+
+static __inline void
+uio_setoffset(struct uio *uio, off_t offset)
+{
+ uio->uio_offset = offset;
+}
+
+static __inline void
+uio_setresid(struct uio *uio, ssize_t resid)
+{
+ uio->uio_resid = resid;
+}
+
+/* time */
+
+#define fuse_timespec_add(vvp, uvp) \
+ do { \
+ (vvp)->tv_sec += (uvp)->tv_sec; \
+ (vvp)->tv_nsec += (uvp)->tv_nsec; \
+ if ((vvp)->tv_nsec >= 1000000000) { \
+ (vvp)->tv_sec++; \
+ (vvp)->tv_nsec -= 1000000000; \
+ } \
+ } while (0)
+
+#define fuse_timespec_cmp(tvp, uvp, cmp) \
+ (((tvp)->tv_sec == (uvp)->tv_sec) ? \
+ ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \
+ ((tvp)->tv_sec cmp (uvp)->tv_sec))
+
+/* miscellaneous */
+
+static __inline__
+int
+fuse_isdeadfs(struct vnode *vp)
+{
+ struct fuse_data *data = fuse_get_mpdata(vnode_mount(vp));
+
+ return (data->dataflags & FSESS_DEAD);
+}
+
+static __inline__
+int
+fuse_iosize(struct vnode *vp)
+{
+ return vp->v_mount->mnt_stat.f_iosize;
+}
+
+/* access */
+
+#define FVP_ACCESS_NOOP 0x01
+
+#define FACCESS_VA_VALID 0x01
+#define FACCESS_DO_ACCESS 0x02
+#define FACCESS_STICKY 0x04
+#define FACCESS_CHOWN 0x08
+#define FACCESS_NOCHECKSPY 0x10
+#define FACCESS_SETGID 0x12
+
+#define FACCESS_XQUERIES FACCESS_STICKY | FACCESS_CHOWN | FACCESS_SETGID
+
+struct fuse_access_param {
+ uid_t xuid;
+ gid_t xgid;
+ uint32_t facc_flags;
+};
+
+static __inline int
+fuse_match_cred(struct ucred *basecred, struct ucred *usercred)
+{
+ if (basecred->cr_uid == usercred->cr_uid &&
+ basecred->cr_uid == usercred->cr_ruid &&
+ basecred->cr_uid == usercred->cr_svuid &&
+ basecred->cr_groups[0] == usercred->cr_groups[0] &&
+ basecred->cr_groups[0] == usercred->cr_rgid &&
+ basecred->cr_groups[0] == usercred->cr_svgid)
+ return 0;
+
+ return EPERM;
+}
+
+int
+fuse_internal_access(struct vnode *vp,
+ mode_t mode,
+ struct fuse_access_param *facp,
+ struct thread *td,
+ struct ucred *cred);
+
+/* attributes */
+
+static __inline
+void
+fuse_internal_attr_fat2vat(struct mount *mp,
+ struct fuse_attr *fat,
+ struct vattr *vap)
+{
+ DEBUGX(FUSE_DEBUG_INTERNAL,
+ "node #%ju, mode 0%o\n", (uintmax_t)fat->ino, fat->mode);
+
+ vattr_null(vap);
+
+ vap->va_fsid = mp->mnt_stat.f_fsid.val[0];
+ vap->va_fileid = fat->ino; /* XXX cast from 64 bits to 32 */
+ vap->va_mode = fat->mode & ~S_IFMT;
+ vap->va_nlink = fat->nlink;
+ vap->va_uid = fat->uid;
+ vap->va_gid = fat->gid;
+ vap->va_rdev = fat->rdev;
+ vap->va_size = fat->size;
+ vap->va_atime.tv_sec = fat->atime; /* XXX on some platforms cast from 64 bits to 32 */
+ vap->va_atime.tv_nsec = fat->atimensec;
+ vap->va_mtime.tv_sec = fat->mtime;
+ vap->va_mtime.tv_nsec = fat->mtimensec;
+ vap->va_ctime.tv_sec = fat->ctime;
+ vap->va_ctime.tv_nsec = fat->ctimensec;
+ vap->va_blocksize = PAGE_SIZE;
+ vap->va_type = IFTOVT(fat->mode);
+
+#if (S_BLKSIZE == 512)
+ /* Optimize this case */
+ vap->va_bytes = fat->blocks << 9;
+#else
+ vap->va_bytes = fat->blocks * S_BLKSIZE;
+#endif
+
+ vap->va_flags = 0;
+}
+
+
+#define cache_attrs(vp, fuse_out) do { \
+ struct timespec uptsp_ ## __func__; \
+ \
+ VTOFUD(vp)->cached_attrs_valid.tv_sec = (fuse_out)->attr_valid; \
+ VTOFUD(vp)->cached_attrs_valid.tv_nsec = (fuse_out)->attr_valid_nsec; \
+ nanouptime(&uptsp_ ## __func__); \
+ \
+ fuse_timespec_add(&VTOFUD(vp)->cached_attrs_valid, &uptsp_ ## __func__); \
+ \
+ fuse_internal_attr_fat2vat(vnode_mount(vp), &(fuse_out)->attr, VTOVA(vp)); \
+} while (0)
+
+/* fsync */
+
+int
+fuse_internal_fsync(struct vnode *vp,
+ struct thread *td,
+ struct ucred *cred,
+ struct fuse_filehandle *fufh);
+
+int
+fuse_internal_fsync_callback(struct fuse_ticket *tick, struct uio *uio);
+
+/* readdir */
+
+struct pseudo_dirent {
+ uint32_t d_namlen;
+};
+
+int
+fuse_internal_readdir(struct vnode *vp,
+ struct uio *uio,
+ struct fuse_filehandle *fufh,
+ struct fuse_iov *cookediov);
+
+int
+fuse_internal_readdir_processdata(struct uio *uio,
+ size_t reqsize,
+ void *buf,
+ size_t bufsize,
+ void *param);
+
+/* remove */
+
+int
+fuse_internal_remove(struct vnode *dvp,
+ struct vnode *vp,
+ struct componentname *cnp,
+ enum fuse_opcode op);
+
+/* rename */
+
+int
+fuse_internal_rename(struct vnode *fdvp,
+ struct componentname *fcnp,
+ struct vnode *tdvp,
+ struct componentname *tcnp);
+/* revoke */
+
+void
+fuse_internal_vnode_disappear(struct vnode *vp);
+
+/* strategy */
+
+/* entity creation */
+
+static __inline
+int
+fuse_internal_checkentry(struct fuse_entry_out *feo, enum vtype vtyp)
+{
+ DEBUGX(FUSE_DEBUG_INTERNAL,
+ "feo=%p, vtype=%d\n", feo, vtyp);
+
+ if (vtyp != IFTOVT(feo->attr.mode)) {
+ DEBUGX(FUSE_DEBUG_INTERNAL,
+ "EINVAL -- %x != %x\n", vtyp, IFTOVT(feo->attr.mode));
+ return EINVAL;
+ }
+
+ if (feo->nodeid == FUSE_NULL_ID) {
+ DEBUGX(FUSE_DEBUG_INTERNAL,
+ "EINVAL -- feo->nodeid is NULL\n");
+ return EINVAL;
+ }
+
+ if (feo->nodeid == FUSE_ROOT_ID) {
+ DEBUGX(FUSE_DEBUG_INTERNAL,
+ "EINVAL -- feo->nodeid is FUSE_ROOT_ID\n");
+ return EINVAL;
+ }
+
+ return 0;
+}
+
+int
+fuse_internal_newentry(struct vnode *dvp,
+ struct vnode **vpp,
+ struct componentname *cnp,
+ enum fuse_opcode op,
+ void *buf,
+ size_t bufsize,
+ enum vtype vtyp);
+
+void
+fuse_internal_newentry_makerequest(struct mount *mp,
+ uint64_t dnid,
+ struct componentname *cnp,
+ enum fuse_opcode op,
+ void *buf,
+ size_t bufsize,
+ struct fuse_dispatcher *fdip);
+
+int
+fuse_internal_newentry_core(struct vnode *dvp,
+ struct vnode **vpp,
+ struct componentname *cnp,
+ enum vtype vtyp,
+ struct fuse_dispatcher *fdip);
+
+/* entity destruction */
+
+int
+fuse_internal_forget_callback(struct fuse_ticket *tick, struct uio *uio);
+
+void
+fuse_internal_forget_send(struct mount *mp,
+ struct thread *td,
+ struct ucred *cred,
+ uint64_t nodeid,
+ uint64_t nlookup);
+
+/* fuse start/stop */
+
+int fuse_internal_init_callback(struct fuse_ticket *tick, struct uio *uio);
+void fuse_internal_send_init(struct fuse_data *data, struct thread *td);
+
+#endif /* _FUSE_INTERNAL_H_ */
diff --git a/sys/fs/fuse/fuse_io.c b/sys/fs/fuse/fuse_io.c
new file mode 100644
index 0000000..7735329
--- /dev/null
+++ b/sys/fs/fuse/fuse_io.c
@@ -0,0 +1,811 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/sx.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/stat.h>
+#include <sys/unistd.h>
+#include <sys/filedesc.h>
+#include <sys/file.h>
+#include <sys/fcntl.h>
+#include <sys/bio.h>
+#include <sys/buf.h>
+#include <sys/sysctl.h>
+
+#include <vm/vm.h>
+#include <vm/vm_extern.h>
+#include <vm/pmap.h>
+#include <vm/vm_map.h>
+#include <vm/vm_page.h>
+#include <vm/vm_object.h>
+#include <vm/vm_pager.h>
+#include <vm/vnode_pager.h>
+#include <vm/vm_object.h>
+
+#include "fuse.h"
+#include "fuse_file.h"
+#include "fuse_node.h"
+#include "fuse_internal.h"
+#include "fuse_ipc.h"
+#include "fuse_io.h"
+
+#define FUSE_DEBUG_MODULE IO
+#include "fuse_debug.h"
+
+
+static int
+fuse_read_directbackend(struct vnode *vp, struct uio *uio,
+ struct ucred *cred, struct fuse_filehandle *fufh);
+static int
+fuse_read_biobackend(struct vnode *vp, struct uio *uio,
+ struct ucred *cred, struct fuse_filehandle *fufh);
+static int
+fuse_write_directbackend(struct vnode *vp, struct uio *uio,
+ struct ucred *cred, struct fuse_filehandle *fufh);
+static int
+fuse_write_biobackend(struct vnode *vp, struct uio *uio,
+ struct ucred *cred, struct fuse_filehandle *fufh);
+
+int
+fuse_io_dispatch(struct vnode *vp, struct uio *uio, int ioflag,
+ struct ucred *cred)
+{
+ struct fuse_filehandle *fufh;
+ int err, directio;
+
+ MPASS(vp->v_type == VREG);
+
+ err = fuse_filehandle_getrw(vp,
+ (uio->uio_rw == UIO_READ) ? FUFH_RDONLY : FUFH_WRONLY, &fufh);
+ if (err) {
+ printf("FUSE: io dispatch: filehandles are closed\n");
+ return err;
+ }
+ /*
+ * Ideally, when the daemon asks for direct io at open time, the
+ * standard file flag should be set according to this, so that would
+ * just change the default mode, which later on could be changed via
+ * fcntl(2).
+ * But this doesn't work, the O_DIRECT flag gets cleared at some point
+ * (don't know where). So to make any use of the Fuse direct_io option,
+ * we hardwire it into the file's private data (similarly to Linux,
+ * btw.).
+ */
+ directio = (ioflag & IO_DIRECT) || !fsess_opt_datacache(vnode_mount(vp));
+
+ switch (uio->uio_rw) {
+ case UIO_READ:
+ if (directio) {
+ DEBUG("direct read of vnode %ju via file handle %ju\n",
+ (uintmax_t)VTOILLU(vp), (uintmax_t)fufh->fh_id);
+ err = fuse_read_directbackend(vp, uio, cred, fufh);
+ } else {
+ DEBUG("buffered read of vnode %ju\n",
+ (uintmax_t)VTOILLU(vp));
+ err = fuse_read_biobackend(vp, uio, cred, fufh);
+ }
+ break;
+ case UIO_WRITE:
+ if (directio) {
+ DEBUG("direct write of vnode %ju via file handle %ju\n",
+ (uintmax_t)VTOILLU(vp), (uintmax_t)fufh->fh_id);
+ err = fuse_write_directbackend(vp, uio, cred, fufh);
+ fuse_invalidate_attr(vp);
+ } else {
+ DEBUG("buffered write of vnode %ju\n",
+ (uintmax_t)VTOILLU(vp));
+ err = fuse_write_biobackend(vp, uio, cred, fufh);
+ }
+ break;
+ default:
+ panic("uninterpreted mode passed to fuse_io_dispatch");
+ }
+
+ return (err);
+}
+
+static int
+fuse_read_biobackend(struct vnode *vp, struct uio *uio,
+ struct ucred *cred, struct fuse_filehandle *fufh)
+{
+ struct buf *bp;
+ daddr_t lbn;
+ int bcount;
+ int err = 0, n = 0, on = 0;
+ off_t filesize;
+
+ const int biosize = fuse_iosize(vp);
+
+ DEBUG("resid=%zx offset=%jx fsize=%jx\n",
+ uio->uio_resid, uio->uio_offset, VTOFUD(vp)->filesize);
+
+ if (uio->uio_resid == 0)
+ return (0);
+ if (uio->uio_offset < 0)
+ return (EINVAL);
+
+ bcount = MIN(MAXBSIZE, biosize);
+ filesize = VTOFUD(vp)->filesize;
+
+ do {
+ if (fuse_isdeadfs(vp)) {
+ err = ENXIO;
+ break;
+ }
+ lbn = uio->uio_offset / biosize;
+ on = uio->uio_offset & (biosize - 1);
+
+ DEBUG2G("biosize %d, lbn %d, on %d\n", biosize, (int)lbn, on);
+
+ /*
+ * Obtain the buffer cache block. Figure out the buffer size
+ * when we are at EOF. If we are modifying the size of the
+ * buffer based on an EOF condition we need to hold
+ * nfs_rslock() through obtaining the buffer to prevent
+ * a potential writer-appender from messing with n_size.
+ * Otherwise we may accidently truncate the buffer and
+ * lose dirty data.
+ *
+ * Note that bcount is *not* DEV_BSIZE aligned.
+ */
+ if ((off_t)lbn * biosize >= filesize) {
+ bcount = 0;
+ } else if ((off_t)(lbn + 1) * biosize > filesize) {
+ bcount = filesize - (off_t)lbn *biosize;
+ }
+ bp = getblk(vp, lbn, bcount, PCATCH, 0, 0);
+
+ if (!bp)
+ return (EINTR);
+
+ /*
+ * If B_CACHE is not set, we must issue the read. If this
+ * fails, we return an error.
+ */
+
+ if ((bp->b_flags & B_CACHE) == 0) {
+ bp->b_iocmd = BIO_READ;
+ vfs_busy_pages(bp, 0);
+ err = fuse_io_strategy(vp, bp);
+ if (err) {
+ brelse(bp);
+ return (err);
+ }
+ }
+ /*
+ * on is the offset into the current bp. Figure out how many
+ * bytes we can copy out of the bp. Note that bcount is
+ * NOT DEV_BSIZE aligned.
+ *
+ * Then figure out how many bytes we can copy into the uio.
+ */
+
+ n = 0;
+ if (on < bcount)
+ n = MIN((unsigned)(bcount - on), uio->uio_resid);
+ if (n > 0) {
+ DEBUG2G("feeding buffeater with %d bytes of buffer %p,"
+ " saying %d was asked for\n",
+ n, bp->b_data + on, n + (int)bp->b_resid);
+ err = uiomove(bp->b_data + on, n, uio);
+ }
+ brelse(bp);
+ DEBUG2G("end of turn, err %d, uio->uio_resid %zd, n %d\n",
+ err, uio->uio_resid, n);
+ } while (err == 0 && uio->uio_resid > 0 && n > 0);
+
+ return (err);
+}
+
+static int
+fuse_read_directbackend(struct vnode *vp, struct uio *uio,
+ struct ucred *cred, struct fuse_filehandle *fufh)
+{
+ struct fuse_dispatcher fdi;
+ struct fuse_read_in *fri;
+ int err = 0;
+
+ if (uio->uio_resid == 0)
+ return (0);
+
+ fdisp_init(&fdi, 0);
+
+ /*
+ * XXX In "normal" case we use an intermediate kernel buffer for
+ * transmitting data from daemon's context to ours. Eventually, we should
+ * get rid of this. Anyway, if the target uio lives in sysspace (we are
+ * called from pageops), and the input data doesn't need kernel-side
+ * processing (we are not called from readdir) we can already invoke
+ * an optimized, "peer-to-peer" I/O routine.
+ */
+ while (uio->uio_resid > 0) {
+ fdi.iosize = sizeof(*fri);
+ fdisp_make_vp(&fdi, FUSE_READ, vp, uio->uio_td, cred);
+ fri = fdi.indata;
+ fri->fh = fufh->fh_id;
+ fri->offset = uio->uio_offset;
+ fri->size = MIN(uio->uio_resid,
+ fuse_get_mpdata(vp->v_mount)->max_read);
+
+ DEBUG2G("fri->fh %ju, fri->offset %ju, fri->size %ju\n",
+ (uintmax_t)fri->fh, (uintmax_t)fri->offset,
+ (uintmax_t)fri->size);
+
+ if ((err = fdisp_wait_answ(&fdi)))
+ goto out;
+
+ DEBUG2G("complete: got iosize=%d, requested fri.size=%zd; "
+ "resid=%zd offset=%ju\n",
+ fri->size, fdi.iosize, uio->uio_resid,
+ (uintmax_t)uio->uio_offset);
+
+ if ((err = uiomove(fdi.answ, MIN(fri->size, fdi.iosize), uio)))
+ break;
+ if (fdi.iosize < fri->size)
+ break;
+ }
+
+out:
+ fdisp_destroy(&fdi);
+ return (err);
+}
+
+static int
+fuse_write_directbackend(struct vnode *vp, struct uio *uio,
+ struct ucred *cred, struct fuse_filehandle *fufh)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct fuse_write_in *fwi;
+ struct fuse_dispatcher fdi;
+ size_t chunksize;
+ int diff;
+ int err = 0;
+
+ if (!uio->uio_resid)
+ return (0);
+
+ fdisp_init(&fdi, 0);
+
+ while (uio->uio_resid > 0) {
+ chunksize = MIN(uio->uio_resid,
+ fuse_get_mpdata(vp->v_mount)->max_write);
+
+ fdi.iosize = sizeof(*fwi) + chunksize;
+ fdisp_make_vp(&fdi, FUSE_WRITE, vp, uio->uio_td, cred);
+
+ fwi = fdi.indata;
+ fwi->fh = fufh->fh_id;
+ fwi->offset = uio->uio_offset;
+ fwi->size = chunksize;
+
+ if ((err = uiomove((char *)fdi.indata + sizeof(*fwi),
+ chunksize, uio)))
+ break;
+
+ if ((err = fdisp_wait_answ(&fdi)))
+ break;
+
+ diff = chunksize - ((struct fuse_write_out *)fdi.answ)->size;
+ if (diff < 0) {
+ err = EINVAL;
+ break;
+ }
+ uio->uio_resid += diff;
+ uio->uio_offset -= diff;
+ if (uio->uio_offset > fvdat->filesize)
+ fuse_vnode_setsize(vp, cred, uio->uio_offset);
+ }
+
+ fdisp_destroy(&fdi);
+
+ return (err);
+}
+
+static int
+fuse_write_biobackend(struct vnode *vp, struct uio *uio,
+ struct ucred *cred, struct fuse_filehandle *fufh)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct buf *bp;
+ daddr_t lbn;
+ int bcount;
+ int n, on, err = 0;
+
+ const int biosize = fuse_iosize(vp);
+
+ KASSERT(uio->uio_rw == UIO_WRITE, ("ncl_write mode"));
+ DEBUG("resid=%zx offset=%jx fsize=%jx\n",
+ uio->uio_resid, uio->uio_offset, fvdat->filesize);
+ if (vp->v_type != VREG)
+ return (EIO);
+ if (uio->uio_offset < 0)
+ return (EINVAL);
+ if (uio->uio_resid == 0)
+ return (0);
+
+ /*
+ * Find all of this file's B_NEEDCOMMIT buffers. If our writes
+ * would exceed the local maximum per-file write commit size when
+ * combined with those, we must decide whether to flush,
+ * go synchronous, or return err. We don't bother checking
+ * IO_UNIT -- we just make all writes atomic anyway, as there's
+ * no point optimizing for something that really won't ever happen.
+ */
+ do {
+ if (fuse_isdeadfs(vp)) {
+ err = ENXIO;
+ break;
+ }
+ lbn = uio->uio_offset / biosize;
+ on = uio->uio_offset & (biosize - 1);
+ n = MIN((unsigned)(biosize - on), uio->uio_resid);
+
+ DEBUG2G("lbn %ju, on %d, n %d, uio offset %ju, uio resid %zd\n",
+ (uintmax_t)lbn, on, n,
+ (uintmax_t)uio->uio_offset, uio->uio_resid);
+
+again:
+ /*
+ * Handle direct append and file extension cases, calculate
+ * unaligned buffer size.
+ */
+ if (uio->uio_offset == fvdat->filesize && n) {
+ /*
+ * Get the buffer (in its pre-append state to maintain
+ * B_CACHE if it was previously set). Resize the
+ * nfsnode after we have locked the buffer to prevent
+ * readers from reading garbage.
+ */
+ bcount = on;
+ DEBUG("getting block from OS, bcount %d\n", bcount);
+ bp = getblk(vp, lbn, bcount, PCATCH, 0, 0);
+
+ if (bp != NULL) {
+ long save;
+
+ err = fuse_vnode_setsize(vp, cred,
+ uio->uio_offset + n);
+ if (err) {
+ brelse(bp);
+ break;
+ }
+ save = bp->b_flags & B_CACHE;
+ bcount += n;
+ allocbuf(bp, bcount);
+ bp->b_flags |= save;
+ }
+ } else {
+ /*
+ * Obtain the locked cache block first, and then
+ * adjust the file's size as appropriate.
+ */
+ bcount = on + n;
+ if ((off_t)lbn * biosize + bcount < fvdat->filesize) {
+ if ((off_t)(lbn + 1) * biosize < fvdat->filesize)
+ bcount = biosize;
+ else
+ bcount = fvdat->filesize -
+ (off_t)lbn *biosize;
+ }
+ DEBUG("getting block from OS, bcount %d\n", bcount);
+ bp = getblk(vp, lbn, bcount, PCATCH, 0, 0);
+ if (bp && uio->uio_offset + n > fvdat->filesize) {
+ err = fuse_vnode_setsize(vp, cred,
+ uio->uio_offset + n);
+ if (err) {
+ brelse(bp);
+ break;
+ }
+ }
+ }
+
+ if (!bp) {
+ err = EINTR;
+ break;
+ }
+ /*
+ * Issue a READ if B_CACHE is not set. In special-append
+ * mode, B_CACHE is based on the buffer prior to the write
+ * op and is typically set, avoiding the read. If a read
+ * is required in special append mode, the server will
+ * probably send us a short-read since we extended the file
+ * on our end, resulting in b_resid == 0 and, thusly,
+ * B_CACHE getting set.
+ *
+ * We can also avoid issuing the read if the write covers
+ * the entire buffer. We have to make sure the buffer state
+ * is reasonable in this case since we will not be initiating
+ * I/O. See the comments in kern/vfs_bio.c's getblk() for
+ * more information.
+ *
+ * B_CACHE may also be set due to the buffer being cached
+ * normally.
+ */
+
+ if (on == 0 && n == bcount) {
+ bp->b_flags |= B_CACHE;
+ bp->b_flags &= ~B_INVAL;
+ bp->b_ioflags &= ~BIO_ERROR;
+ }
+ if ((bp->b_flags & B_CACHE) == 0) {
+ bp->b_iocmd = BIO_READ;
+ vfs_busy_pages(bp, 0);
+ fuse_io_strategy(vp, bp);
+ if ((err = bp->b_error)) {
+ brelse(bp);
+ break;
+ }
+ }
+ if (bp->b_wcred == NOCRED)
+ bp->b_wcred = crhold(cred);
+
+ /*
+ * If dirtyend exceeds file size, chop it down. This should
+ * not normally occur but there is an append race where it
+ * might occur XXX, so we log it.
+ *
+ * If the chopping creates a reverse-indexed or degenerate
+ * situation with dirtyoff/end, we 0 both of them.
+ */
+
+ if (bp->b_dirtyend > bcount) {
+ DEBUG("FUSE append race @%lx:%d\n",
+ (long)bp->b_blkno * biosize,
+ bp->b_dirtyend - bcount);
+ bp->b_dirtyend = bcount;
+ }
+ if (bp->b_dirtyoff >= bp->b_dirtyend)
+ bp->b_dirtyoff = bp->b_dirtyend = 0;
+
+ /*
+ * If the new write will leave a contiguous dirty
+ * area, just update the b_dirtyoff and b_dirtyend,
+ * otherwise force a write rpc of the old dirty area.
+ *
+ * While it is possible to merge discontiguous writes due to
+ * our having a B_CACHE buffer ( and thus valid read data
+ * for the hole), we don't because it could lead to
+ * significant cache coherency problems with multiple clients,
+ * especially if locking is implemented later on.
+ *
+ * as an optimization we could theoretically maintain
+ * a linked list of discontinuous areas, but we would still
+ * have to commit them separately so there isn't much
+ * advantage to it except perhaps a bit of asynchronization.
+ */
+
+ if (bp->b_dirtyend > 0 &&
+ (on > bp->b_dirtyend || (on + n) < bp->b_dirtyoff)) {
+ /*
+ * Yes, we mean it. Write out everything to "storage"
+ * immediatly, without hesitation. (Apart from other
+ * reasons: the only way to know if a write is valid
+ * if its actually written out.)
+ */
+ bwrite(bp);
+ if (bp->b_error == EINTR) {
+ err = EINTR;
+ break;
+ }
+ goto again;
+ }
+ err = uiomove((char *)bp->b_data + on, n, uio);
+
+ /*
+ * Since this block is being modified, it must be written
+ * again and not just committed. Since write clustering does
+ * not work for the stage 1 data write, only the stage 2
+ * commit rpc, we have to clear B_CLUSTEROK as well.
+ */
+ bp->b_flags &= ~(B_NEEDCOMMIT | B_CLUSTEROK);
+
+ if (err) {
+ bp->b_ioflags |= BIO_ERROR;
+ bp->b_error = err;
+ brelse(bp);
+ break;
+ }
+ /*
+ * Only update dirtyoff/dirtyend if not a degenerate
+ * condition.
+ */
+ if (n) {
+ if (bp->b_dirtyend > 0) {
+ bp->b_dirtyoff = MIN(on, bp->b_dirtyoff);
+ bp->b_dirtyend = MAX((on + n), bp->b_dirtyend);
+ } else {
+ bp->b_dirtyoff = on;
+ bp->b_dirtyend = on + n;
+ }
+ vfs_bio_set_valid(bp, on, n);
+ }
+ err = bwrite(bp);
+ if (err)
+ break;
+ } while (uio->uio_resid > 0 && n > 0);
+
+ if (fuse_sync_resize && (fvdat->flag & FN_SIZECHANGE) != 0)
+ fuse_vnode_savesize(vp, cred);
+
+ return (err);
+}
+
+int
+fuse_io_strategy(struct vnode *vp, struct buf *bp)
+{
+ struct fuse_filehandle *fufh;
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct ucred *cred;
+ struct uio *uiop;
+ struct uio uio;
+ struct iovec io;
+ int error = 0;
+
+ const int biosize = fuse_iosize(vp);
+
+ MPASS(vp->v_type == VREG);
+ MPASS(bp->b_iocmd == BIO_READ || bp->b_iocmd == BIO_WRITE);
+ DEBUG("inode=%ju offset=%jd resid=%ld\n",
+ (uintmax_t)VTOI(vp), (intmax_t)(((off_t)bp->b_blkno) * biosize),
+ bp->b_bcount);
+
+ error = fuse_filehandle_getrw(vp,
+ (bp->b_iocmd == BIO_READ) ? FUFH_RDONLY : FUFH_WRONLY, &fufh);
+ if (error) {
+ printf("FUSE: strategy: filehandles are closed\n");
+ bp->b_ioflags |= BIO_ERROR;
+ bp->b_error = error;
+ return (error);
+ }
+ cred = bp->b_iocmd == BIO_READ ? bp->b_rcred : bp->b_wcred;
+
+ uiop = &uio;
+ uiop->uio_iov = &io;
+ uiop->uio_iovcnt = 1;
+ uiop->uio_segflg = UIO_SYSSPACE;
+ uiop->uio_td = curthread;
+
+ /*
+ * clear BIO_ERROR and B_INVAL state prior to initiating the I/O. We
+ * do this here so we do not have to do it in all the code that
+ * calls us.
+ */
+ bp->b_flags &= ~B_INVAL;
+ bp->b_ioflags &= ~BIO_ERROR;
+
+ KASSERT(!(bp->b_flags & B_DONE),
+ ("fuse_io_strategy: bp %p already marked done", bp));
+ if (bp->b_iocmd == BIO_READ) {
+ io.iov_len = uiop->uio_resid = bp->b_bcount;
+ io.iov_base = bp->b_data;
+ uiop->uio_rw = UIO_READ;
+
+ uiop->uio_offset = ((off_t)bp->b_blkno) * biosize;
+ error = fuse_read_directbackend(vp, uiop, cred, fufh);
+
+ if ((!error && uiop->uio_resid) ||
+ (fsess_opt_brokenio(vnode_mount(vp)) && error == EIO &&
+ uiop->uio_offset < fvdat->filesize && fvdat->filesize > 0 &&
+ uiop->uio_offset >= fvdat->cached_attrs.va_size)) {
+ /*
+ * If we had a short read with no error, we must have
+ * hit a file hole. We should zero-fill the remainder.
+ * This can also occur if the server hits the file EOF.
+ *
+ * Holes used to be able to occur due to pending
+ * writes, but that is not possible any longer.
+ */
+ int nread = bp->b_bcount - uiop->uio_resid;
+ int left = uiop->uio_resid;
+
+ if (error != 0) {
+ printf("FUSE: Fix broken io: offset %ju, "
+ " resid %zd, file size %ju/%ju\n",
+ (uintmax_t)uiop->uio_offset,
+ uiop->uio_resid, fvdat->filesize,
+ fvdat->cached_attrs.va_size);
+ error = 0;
+ }
+ if (left > 0)
+ bzero((char *)bp->b_data + nread, left);
+ uiop->uio_resid = 0;
+ }
+ if (error) {
+ bp->b_ioflags |= BIO_ERROR;
+ bp->b_error = error;
+ }
+ } else {
+ /*
+ * If we only need to commit, try to commit
+ */
+ if (bp->b_flags & B_NEEDCOMMIT) {
+ DEBUG("write: B_NEEDCOMMIT flags set\n");
+ }
+ /*
+ * Setup for actual write
+ */
+ if ((off_t)bp->b_blkno * biosize + bp->b_dirtyend >
+ fvdat->filesize)
+ bp->b_dirtyend = fvdat->filesize -
+ (off_t)bp->b_blkno * biosize;
+
+ if (bp->b_dirtyend > bp->b_dirtyoff) {
+ io.iov_len = uiop->uio_resid = bp->b_dirtyend
+ - bp->b_dirtyoff;
+ uiop->uio_offset = (off_t)bp->b_blkno * biosize
+ + bp->b_dirtyoff;
+ io.iov_base = (char *)bp->b_data + bp->b_dirtyoff;
+ uiop->uio_rw = UIO_WRITE;
+
+ error = fuse_write_directbackend(vp, uiop, cred, fufh);
+
+ if (error == EINTR || error == ETIMEDOUT
+ || (!error && (bp->b_flags & B_NEEDCOMMIT))) {
+
+ bp->b_flags &= ~(B_INVAL | B_NOCACHE);
+ if ((bp->b_flags & B_PAGING) == 0) {
+ bdirty(bp);
+ bp->b_flags &= ~B_DONE;
+ }
+ if ((error == EINTR || error == ETIMEDOUT) &&
+ (bp->b_flags & B_ASYNC) == 0)
+ bp->b_flags |= B_EINTR;
+ } else {
+ if (error) {
+ bp->b_ioflags |= BIO_ERROR;
+ bp->b_flags |= B_INVAL;
+ bp->b_error = error;
+ }
+ bp->b_dirtyoff = bp->b_dirtyend = 0;
+ }
+ } else {
+ bp->b_resid = 0;
+ bufdone(bp);
+ return (0);
+ }
+ }
+ bp->b_resid = uiop->uio_resid;
+ bufdone(bp);
+ return (error);
+}
+
+int
+fuse_io_flushbuf(struct vnode *vp, int waitfor, struct thread *td)
+{
+ struct vop_fsync_args a = {
+ .a_vp = vp,
+ .a_waitfor = waitfor,
+ .a_td = td,
+ };
+
+ return (vop_stdfsync(&a));
+}
+
+/*
+ * Flush and invalidate all dirty buffers. If another process is already
+ * doing the flush, just wait for completion.
+ */
+int
+fuse_io_invalbuf(struct vnode *vp, struct thread *td)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ int error = 0;
+
+ if (vp->v_iflag & VI_DOOMED)
+ return 0;
+
+ ASSERT_VOP_ELOCKED(vp, "fuse_io_invalbuf");
+
+ while (fvdat->flag & FN_FLUSHINPROG) {
+ struct proc *p = td->td_proc;
+
+ if (vp->v_mount->mnt_kern_flag & MNTK_UNMOUNTF)
+ return EIO;
+ fvdat->flag |= FN_FLUSHWANT;
+ tsleep(&fvdat->flag, PRIBIO + 2, "fusevinv", 2 * hz);
+ error = 0;
+ if (p != NULL) {
+ PROC_LOCK(p);
+ if (SIGNOTEMPTY(p->p_siglist) ||
+ SIGNOTEMPTY(td->td_siglist))
+ error = EINTR;
+ PROC_UNLOCK(p);
+ }
+ if (error == EINTR)
+ return EINTR;
+ }
+ fvdat->flag |= FN_FLUSHINPROG;
+
+ if (vp->v_bufobj.bo_object != NULL) {
+ VM_OBJECT_LOCK(vp->v_bufobj.bo_object);
+ vm_object_page_clean(vp->v_bufobj.bo_object, 0, 0, OBJPC_SYNC);
+ VM_OBJECT_UNLOCK(vp->v_bufobj.bo_object);
+ }
+ error = vinvalbuf(vp, V_SAVE, PCATCH, 0);
+ while (error) {
+ if (error == ERESTART || error == EINTR) {
+ fvdat->flag &= ~FN_FLUSHINPROG;
+ if (fvdat->flag & FN_FLUSHWANT) {
+ fvdat->flag &= ~FN_FLUSHWANT;
+ wakeup(&fvdat->flag);
+ }
+ return EINTR;
+ }
+ error = vinvalbuf(vp, V_SAVE, PCATCH, 0);
+ }
+ fvdat->flag &= ~FN_FLUSHINPROG;
+ if (fvdat->flag & FN_FLUSHWANT) {
+ fvdat->flag &= ~FN_FLUSHWANT;
+ wakeup(&fvdat->flag);
+ }
+ return (error);
+}
diff --git a/sys/fs/fuse/fuse_io.h b/sys/fs/fuse/fuse_io.h
new file mode 100644
index 0000000..b56e14a
--- /dev/null
+++ b/sys/fs/fuse/fuse_io.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _FUSE_IO_H_
+#define _FUSE_IO_H_
+
+int fuse_io_dispatch(struct vnode *vp, struct uio *uio, int ioflag,
+ struct ucred *cred);
+int fuse_io_strategy(struct vnode *vp, struct buf *bp);
+int fuse_io_flushbuf(struct vnode *vp, int waitfor, struct thread *td);
+int fuse_io_invalbuf(struct vnode *vp, struct thread *td);
+
+#endif /* _FUSE_IO_H_ */
diff --git a/sys/fs/fuse/fuse_ipc.c b/sys/fs/fuse/fuse_ipc.c
new file mode 100644
index 0000000..52d69b5
--- /dev/null
+++ b/sys/fs/fuse/fuse_ipc.c
@@ -0,0 +1,904 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/sx.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/signalvar.h>
+#include <sys/syscallsubr.h>
+#include <sys/sysctl.h>
+#include <vm/uma.h>
+
+#include "fuse.h"
+#include "fuse_node.h"
+#include "fuse_ipc.h"
+#include "fuse_internal.h"
+
+#define FUSE_DEBUG_MODULE IPC
+#include "fuse_debug.h"
+
+static struct fuse_ticket *fticket_alloc(struct fuse_data *data);
+static void fticket_refresh(struct fuse_ticket *ftick);
+static void fticket_destroy(struct fuse_ticket *ftick);
+static int fticket_wait_answer(struct fuse_ticket *ftick);
+static __inline__ int
+fticket_aw_pull_uio(struct fuse_ticket *ftick,
+ struct uio *uio);
+
+static int fuse_body_audit(struct fuse_ticket *ftick, size_t blen);
+static __inline__ void
+fuse_setup_ihead(struct fuse_in_header *ihead,
+ struct fuse_ticket *ftick,
+ uint64_t nid,
+ enum fuse_opcode op,
+ size_t blen,
+ pid_t pid,
+ struct ucred *cred);
+
+static fuse_handler_t fuse_standard_handler;
+
+SYSCTL_NODE(_vfs, OID_AUTO, fuse, CTLFLAG_RW, 0, "FUSE tunables");
+SYSCTL_STRING(_vfs_fuse, OID_AUTO, version, CTLFLAG_RD,
+ FUSE_FREEBSD_VERSION, 0, "fuse-freebsd version");
+static int fuse_ticket_count = 0;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, ticket_count, CTLFLAG_RW,
+ &fuse_ticket_count, 0, "number of allocated tickets");
+static long fuse_iov_permanent_bufsize = 1 << 19;
+
+SYSCTL_LONG(_vfs_fuse, OID_AUTO, iov_permanent_bufsize, CTLFLAG_RW,
+ &fuse_iov_permanent_bufsize, 0,
+ "limit for permanently stored buffer size for fuse_iovs");
+static int fuse_iov_credit = 16;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, iov_credit, CTLFLAG_RW,
+ &fuse_iov_credit, 0,
+ "how many times is an oversized fuse_iov tolerated");
+
+MALLOC_DEFINE(M_FUSEMSG, "fuse_msgbuf", "fuse message buffer");
+static uma_zone_t ticket_zone;
+
+static void
+fuse_block_sigs(sigset_t *oldset)
+{
+ sigset_t newset;
+
+ SIGFILLSET(newset);
+ SIGDELSET(newset, SIGKILL);
+ if (kern_sigprocmask(curthread, SIG_BLOCK, &newset, oldset, 0))
+ panic("%s: Invalid operation for kern_sigprocmask()",
+ __func__);
+}
+
+static void
+fuse_restore_sigs(sigset_t *oldset)
+{
+
+ if (kern_sigprocmask(curthread, SIG_SETMASK, oldset, NULL, 0))
+ panic("%s: Invalid operation for kern_sigprocmask()",
+ __func__);
+}
+
+void
+fiov_init(struct fuse_iov *fiov, size_t size)
+{
+ uint32_t msize = FU_AT_LEAST(size);
+
+ debug_printf("fiov=%p, size=%zd\n", fiov, size);
+
+ fiov->len = 0;
+
+ fiov->base = malloc(msize, M_FUSEMSG, M_WAITOK | M_ZERO);
+
+ fiov->allocated_size = msize;
+ fiov->credit = fuse_iov_credit;
+}
+
+void
+fiov_teardown(struct fuse_iov *fiov)
+{
+ debug_printf("fiov=%p\n", fiov);
+
+ MPASS(fiov->base != NULL);
+ free(fiov->base, M_FUSEMSG);
+}
+
+void
+fiov_adjust(struct fuse_iov *fiov, size_t size)
+{
+ debug_printf("fiov=%p, size=%zd\n", fiov, size);
+
+ if (fiov->allocated_size < size ||
+ (fuse_iov_permanent_bufsize >= 0 &&
+ fiov->allocated_size - size > fuse_iov_permanent_bufsize &&
+ --fiov->credit < 0)) {
+
+ fiov->base = realloc(fiov->base, FU_AT_LEAST(size), M_FUSEMSG,
+ M_WAITOK | M_ZERO);
+ if (!fiov->base) {
+ panic("FUSE: realloc failed");
+ }
+ fiov->allocated_size = FU_AT_LEAST(size);
+ fiov->credit = fuse_iov_credit;
+ }
+ fiov->len = size;
+}
+
+void
+fiov_refresh(struct fuse_iov *fiov)
+{
+ debug_printf("fiov=%p\n", fiov);
+
+ bzero(fiov->base, fiov->len);
+ fiov_adjust(fiov, 0);
+}
+
+static int
+fticket_ctor(void *mem, int size, void *arg, int flags)
+{
+ struct fuse_ticket *ftick = mem;
+ struct fuse_data *data = arg;
+
+ debug_printf("ftick=%p data=%p\n", ftick, data);
+
+ FUSE_ASSERT_MS_DONE(ftick);
+ FUSE_ASSERT_AW_DONE(ftick);
+
+ ftick->tk_data = data;
+
+ if (ftick->tk_unique != 0)
+ fticket_refresh(ftick);
+
+ /* May be truncated to 32 bits */
+ ftick->tk_unique = atomic_fetchadd_long(&data->ticketer, 1);
+ if (ftick->tk_unique == 0)
+ ftick->tk_unique = atomic_fetchadd_long(&data->ticketer, 1);
+
+ refcount_init(&ftick->tk_refcount, 1);
+ atomic_add_acq_int(&fuse_ticket_count, 1);
+
+ return 0;
+}
+
+static void
+fticket_dtor(void *mem, int size, void *arg)
+{
+ struct fuse_ticket *ftick = mem;
+
+ debug_printf("ftick=%p\n", ftick);
+
+ FUSE_ASSERT_MS_DONE(ftick);
+ FUSE_ASSERT_AW_DONE(ftick);
+
+ atomic_subtract_acq_int(&fuse_ticket_count, 1);
+}
+
+static int
+fticket_init(void *mem, int size, int flags)
+{
+ struct fuse_ticket *ftick = mem;
+
+ DEBUG("ftick=%p\n", ftick);
+
+ bzero(ftick, sizeof(struct fuse_ticket));
+
+ fiov_init(&ftick->tk_ms_fiov, sizeof(struct fuse_in_header));
+ ftick->tk_ms_type = FT_M_FIOV;
+
+ mtx_init(&ftick->tk_aw_mtx, "fuse answer delivery mutex", NULL, MTX_DEF);
+ fiov_init(&ftick->tk_aw_fiov, 0);
+ ftick->tk_aw_type = FT_A_FIOV;
+
+ return 0;
+}
+
+static void
+fticket_fini(void *mem, int size)
+{
+ struct fuse_ticket *ftick = mem;
+
+ DEBUG("ftick=%p\n", ftick);
+
+ fiov_teardown(&ftick->tk_ms_fiov);
+ fiov_teardown(&ftick->tk_aw_fiov);
+ mtx_destroy(&ftick->tk_aw_mtx);
+}
+
+static __inline struct fuse_ticket *
+fticket_alloc(struct fuse_data *data)
+{
+ return uma_zalloc_arg(ticket_zone, data, M_WAITOK);
+}
+
+static __inline void
+fticket_destroy(struct fuse_ticket *ftick)
+{
+ return uma_zfree(ticket_zone, ftick);
+}
+
+static __inline__
+void
+fticket_refresh(struct fuse_ticket *ftick)
+{
+ debug_printf("ftick=%p\n", ftick);
+
+ FUSE_ASSERT_MS_DONE(ftick);
+ FUSE_ASSERT_AW_DONE(ftick);
+
+ fiov_refresh(&ftick->tk_ms_fiov);
+ ftick->tk_ms_bufdata = NULL;
+ ftick->tk_ms_bufsize = 0;
+ ftick->tk_ms_type = FT_M_FIOV;
+
+ bzero(&ftick->tk_aw_ohead, sizeof(struct fuse_out_header));
+
+ fiov_refresh(&ftick->tk_aw_fiov);
+ ftick->tk_aw_errno = 0;
+ ftick->tk_aw_bufdata = NULL;
+ ftick->tk_aw_bufsize = 0;
+ ftick->tk_aw_type = FT_A_FIOV;
+
+ ftick->tk_flag = 0;
+}
+
+static int
+fticket_wait_answer(struct fuse_ticket *ftick)
+{
+ sigset_t tset;
+ int err = 0;
+ struct fuse_data *data;
+
+ debug_printf("ftick=%p\n", ftick);
+ fuse_lck_mtx_lock(ftick->tk_aw_mtx);
+
+ if (fticket_answered(ftick)) {
+ goto out;
+ }
+ data = ftick->tk_data;
+
+ if (fdata_get_dead(data)) {
+ err = ENOTCONN;
+ fticket_set_answered(ftick);
+ goto out;
+ }
+ fuse_block_sigs(&tset);
+ err = msleep(ftick, &ftick->tk_aw_mtx, PCATCH, "fu_ans",
+ data->daemon_timeout * hz);
+ fuse_restore_sigs(&tset);
+ if (err == EAGAIN) { /* same as EWOULDBLOCK */
+#ifdef XXXIP /* die conditionally */
+ if (!fdata_get_dead(data)) {
+ fdata_set_dead(data);
+ }
+#endif
+ err = ETIMEDOUT;
+ fticket_set_answered(ftick);
+ }
+out:
+ if (!(err || fticket_answered(ftick))) {
+ debug_printf("FUSE: requester was woken up but still no answer");
+ err = ENXIO;
+ }
+ fuse_lck_mtx_unlock(ftick->tk_aw_mtx);
+
+ return err;
+}
+
+static __inline__
+int
+fticket_aw_pull_uio(struct fuse_ticket *ftick, struct uio *uio)
+{
+ int err = 0;
+ size_t len = uio_resid(uio);
+
+ debug_printf("ftick=%p, uio=%p\n", ftick, uio);
+
+ if (len) {
+ switch (ftick->tk_aw_type) {
+ case FT_A_FIOV:
+ fiov_adjust(fticket_resp(ftick), len);
+ err = uiomove(fticket_resp(ftick)->base, len, uio);
+ if (err) {
+ debug_printf("FUSE: FT_A_FIOV: error is %d"
+ " (%p, %zd, %p)\n",
+ err, fticket_resp(ftick)->base,
+ len, uio);
+ }
+ break;
+
+ case FT_A_BUF:
+ ftick->tk_aw_bufsize = len;
+ err = uiomove(ftick->tk_aw_bufdata, len, uio);
+ if (err) {
+ debug_printf("FUSE: FT_A_BUF: error is %d"
+ " (%p, %zd, %p)\n",
+ err, ftick->tk_aw_bufdata, len, uio);
+ }
+ break;
+
+ default:
+ panic("FUSE: unknown answer type for ticket %p", ftick);
+ }
+ }
+ return err;
+}
+
+int
+fticket_pull(struct fuse_ticket *ftick, struct uio *uio)
+{
+ int err = 0;
+
+ debug_printf("ftick=%p, uio=%p\n", ftick, uio);
+
+ if (ftick->tk_aw_ohead.error) {
+ return 0;
+ }
+ err = fuse_body_audit(ftick, uio_resid(uio));
+ if (!err) {
+ err = fticket_aw_pull_uio(ftick, uio);
+ }
+ return err;
+}
+
+struct fuse_data *
+fdata_alloc(struct cdev *fdev, struct ucred *cred)
+{
+ struct fuse_data *data;
+
+ debug_printf("fdev=%p\n", fdev);
+
+ data = malloc(sizeof(struct fuse_data), M_FUSEMSG, M_WAITOK | M_ZERO);
+
+ data->fdev = fdev;
+ mtx_init(&data->ms_mtx, "fuse message list mutex", NULL, MTX_DEF);
+ STAILQ_INIT(&data->ms_head);
+ mtx_init(&data->aw_mtx, "fuse answer list mutex", NULL, MTX_DEF);
+ TAILQ_INIT(&data->aw_head);
+ data->daemoncred = crhold(cred);
+ data->daemon_timeout = FUSE_DEFAULT_DAEMON_TIMEOUT;
+ sx_init(&data->rename_lock, "fuse rename lock");
+ data->ref = 1;
+
+ return data;
+}
+
+void
+fdata_trydestroy(struct fuse_data *data)
+{
+ DEBUG("data=%p data.mp=%p data.fdev=%p data.flags=%04x\n",
+ data, data->mp, data->fdev, data->dataflags);
+
+ DEBUG("destroy: data=%p\n", data);
+ data->ref--;
+ MPASS(data->ref >= 0);
+ if (data->ref != 0)
+ return;
+
+ /* Driving off stage all that stuff thrown at device... */
+ mtx_destroy(&data->ms_mtx);
+ mtx_destroy(&data->aw_mtx);
+ sx_destroy(&data->rename_lock);
+
+ crfree(data->daemoncred);
+
+ free(data, M_FUSEMSG);
+}
+
+void
+fdata_set_dead(struct fuse_data *data)
+{
+ debug_printf("data=%p\n", data);
+
+ FUSE_LOCK();
+ if (fdata_get_dead(data)) {
+ FUSE_UNLOCK();
+ return;
+ }
+ fuse_lck_mtx_lock(data->ms_mtx);
+ data->dataflags |= FSESS_DEAD;
+ wakeup_one(data);
+ selwakeuppri(&data->ks_rsel, PZERO + 1);
+ wakeup(&data->ticketer);
+ fuse_lck_mtx_unlock(data->ms_mtx);
+ FUSE_UNLOCK();
+}
+
+struct fuse_ticket *
+fuse_ticket_fetch(struct fuse_data *data)
+{
+ int err = 0;
+ struct fuse_ticket *ftick;
+
+ debug_printf("data=%p\n", data);
+
+ ftick = fticket_alloc(data);
+
+ if (!(data->dataflags & FSESS_INITED)) {
+ /* Sleep until get answer for INIT messsage */
+ FUSE_LOCK();
+ if (!(data->dataflags & FSESS_INITED) && data->ticketer > 2) {
+ err = msleep(&data->ticketer, &fuse_mtx, PCATCH | PDROP,
+ "fu_ini", 0);
+ if (err)
+ fdata_set_dead(data);
+ } else
+ FUSE_UNLOCK();
+ }
+ return ftick;
+}
+
+int
+fuse_ticket_drop(struct fuse_ticket *ftick)
+{
+ int die;
+
+ die = refcount_release(&ftick->tk_refcount);
+ debug_printf("ftick=%p refcount=%d\n", ftick, ftick->tk_refcount);
+ if (die)
+ fticket_destroy(ftick);
+
+ return die;
+}
+
+void
+fuse_insert_callback(struct fuse_ticket *ftick, fuse_handler_t * handler)
+{
+ debug_printf("ftick=%p, handler=%p data=%p\n", ftick, ftick->tk_data,
+ handler);
+
+ if (fdata_get_dead(ftick->tk_data)) {
+ return;
+ }
+ ftick->tk_aw_handler = handler;
+
+ fuse_lck_mtx_lock(ftick->tk_data->aw_mtx);
+ fuse_aw_push(ftick);
+ fuse_lck_mtx_unlock(ftick->tk_data->aw_mtx);
+}
+
+void
+fuse_insert_message(struct fuse_ticket *ftick)
+{
+ debug_printf("ftick=%p\n", ftick);
+
+ if (ftick->tk_flag & FT_DIRTY) {
+ panic("FUSE: ticket reused without being refreshed");
+ }
+ ftick->tk_flag |= FT_DIRTY;
+
+ if (fdata_get_dead(ftick->tk_data)) {
+ return;
+ }
+ fuse_lck_mtx_lock(ftick->tk_data->ms_mtx);
+ fuse_ms_push(ftick);
+ wakeup_one(ftick->tk_data);
+ selwakeuppri(&ftick->tk_data->ks_rsel, PZERO + 1);
+ fuse_lck_mtx_unlock(ftick->tk_data->ms_mtx);
+}
+
+static int
+fuse_body_audit(struct fuse_ticket *ftick, size_t blen)
+{
+ int err = 0;
+ enum fuse_opcode opcode;
+
+ debug_printf("ftick=%p, blen = %zu\n", ftick, blen);
+
+ opcode = fticket_opcode(ftick);
+
+ switch (opcode) {
+ case FUSE_LOOKUP:
+ err = (blen == sizeof(struct fuse_entry_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_FORGET:
+ panic("FUSE: a handler has been intalled for FUSE_FORGET");
+ break;
+
+ case FUSE_GETATTR:
+ err = (blen == sizeof(struct fuse_attr_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_SETATTR:
+ err = (blen == sizeof(struct fuse_attr_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_READLINK:
+ err = (PAGE_SIZE >= blen) ? 0 : EINVAL;
+ break;
+
+ case FUSE_SYMLINK:
+ err = (blen == sizeof(struct fuse_entry_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_MKNOD:
+ err = (blen == sizeof(struct fuse_entry_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_MKDIR:
+ err = (blen == sizeof(struct fuse_entry_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_UNLINK:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ case FUSE_RMDIR:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ case FUSE_RENAME:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ case FUSE_LINK:
+ err = (blen == sizeof(struct fuse_entry_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_OPEN:
+ err = (blen == sizeof(struct fuse_open_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_READ:
+ err = (((struct fuse_read_in *)(
+ (char *)ftick->tk_ms_fiov.base +
+ sizeof(struct fuse_in_header)
+ ))->size >= blen) ? 0 : EINVAL;
+ break;
+
+ case FUSE_WRITE:
+ err = (blen == sizeof(struct fuse_write_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_STATFS:
+ if (fuse_libabi_geq(ftick->tk_data, 7, 4)) {
+ err = (blen == sizeof(struct fuse_statfs_out)) ?
+ 0 : EINVAL;
+ } else {
+ err = (blen == FUSE_COMPAT_STATFS_SIZE) ? 0 : EINVAL;
+ }
+ break;
+
+ case FUSE_RELEASE:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ case FUSE_FSYNC:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ case FUSE_SETXATTR:
+ panic("FUSE_SETXATTR implementor has forgotten to define a"
+ " response body format check");
+ break;
+
+ case FUSE_GETXATTR:
+ panic("FUSE_GETXATTR implementor has forgotten to define a"
+ " response body format check");
+ break;
+
+ case FUSE_LISTXATTR:
+ panic("FUSE_LISTXATTR implementor has forgotten to define a"
+ " response body format check");
+ break;
+
+ case FUSE_REMOVEXATTR:
+ panic("FUSE_REMOVEXATTR implementor has forgotten to define a"
+ " response body format check");
+ break;
+
+ case FUSE_FLUSH:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ case FUSE_INIT:
+ if (blen == sizeof(struct fuse_init_out) || blen == 8) {
+ err = 0;
+ } else {
+ err = EINVAL;
+ }
+ break;
+
+ case FUSE_OPENDIR:
+ err = (blen == sizeof(struct fuse_open_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_READDIR:
+ err = (((struct fuse_read_in *)(
+ (char *)ftick->tk_ms_fiov.base +
+ sizeof(struct fuse_in_header)
+ ))->size >= blen) ? 0 : EINVAL;
+ break;
+
+ case FUSE_RELEASEDIR:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ case FUSE_FSYNCDIR:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ case FUSE_GETLK:
+ panic("FUSE: no response body format check for FUSE_GETLK");
+ break;
+
+ case FUSE_SETLK:
+ panic("FUSE: no response body format check for FUSE_SETLK");
+ break;
+
+ case FUSE_SETLKW:
+ panic("FUSE: no response body format check for FUSE_SETLKW");
+ break;
+
+ case FUSE_ACCESS:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ case FUSE_CREATE:
+ err = (blen == sizeof(struct fuse_entry_out) +
+ sizeof(struct fuse_open_out)) ? 0 : EINVAL;
+ break;
+
+ case FUSE_DESTROY:
+ err = (blen == 0) ? 0 : EINVAL;
+ break;
+
+ default:
+ panic("FUSE: opcodes out of sync (%d)\n", opcode);
+ }
+
+ return err;
+}
+
+static void
+fuse_setup_ihead(struct fuse_in_header *ihead,
+ struct fuse_ticket *ftick,
+ uint64_t nid,
+ enum fuse_opcode op,
+ size_t blen,
+ pid_t pid,
+ struct ucred *cred)
+{
+ ihead->len = sizeof(*ihead) + blen;
+ ihead->unique = ftick->tk_unique;
+ ihead->nodeid = nid;
+ ihead->opcode = op;
+
+ debug_printf("ihead=%p, ftick=%p, nid=%ju, op=%d, blen=%zu\n",
+ ihead, ftick, (uintmax_t)nid, op, blen);
+
+ ihead->pid = pid;
+ ihead->uid = cred->cr_uid;
+ ihead->gid = cred->cr_rgid;
+}
+
+/*
+ * fuse_standard_handler just pulls indata and wakes up pretender.
+ * Doesn't try to interpret data, that's left for the pretender.
+ * Though might do a basic size verification before the pull-in takes place
+ */
+
+static int
+fuse_standard_handler(struct fuse_ticket *ftick, struct uio *uio)
+{
+ int err = 0;
+
+ debug_printf("ftick=%p, uio=%p\n", ftick, uio);
+
+ err = fticket_pull(ftick, uio);
+
+ fuse_lck_mtx_lock(ftick->tk_aw_mtx);
+
+ if (!fticket_answered(ftick)) {
+ fticket_set_answered(ftick);
+ ftick->tk_aw_errno = err;
+ wakeup(ftick);
+ }
+ fuse_lck_mtx_unlock(ftick->tk_aw_mtx);
+
+ return err;
+}
+
+void
+fdisp_make_pid(struct fuse_dispatcher *fdip,
+ enum fuse_opcode op,
+ struct mount *mp,
+ uint64_t nid,
+ pid_t pid,
+ struct ucred *cred)
+{
+ struct fuse_data *data = fuse_get_mpdata(mp);
+
+ debug_printf("fdip=%p, op=%d, mp=%p, nid=%ju\n",
+ fdip, op, mp, (uintmax_t)nid);
+
+ if (fdip->tick) {
+ fticket_refresh(fdip->tick);
+ } else {
+ fdip->tick = fuse_ticket_fetch(data);
+ }
+
+ FUSE_DIMALLOC(&fdip->tick->tk_ms_fiov, fdip->finh,
+ fdip->indata, fdip->iosize);
+
+ fuse_setup_ihead(fdip->finh, fdip->tick, nid, op, fdip->iosize, pid, cred);
+}
+
+void
+fdisp_make(struct fuse_dispatcher *fdip,
+ enum fuse_opcode op,
+ struct mount *mp,
+ uint64_t nid,
+ struct thread *td,
+ struct ucred *cred)
+{
+ RECTIFY_TDCR(td, cred);
+
+ return fdisp_make_pid(fdip, op, mp, nid, td->td_proc->p_pid, cred);
+}
+
+void
+fdisp_make_vp(struct fuse_dispatcher *fdip,
+ enum fuse_opcode op,
+ struct vnode *vp,
+ struct thread *td,
+ struct ucred *cred)
+{
+ debug_printf("fdip=%p, op=%d, vp=%p\n", fdip, op, vp);
+ RECTIFY_TDCR(td, cred);
+ return fdisp_make_pid(fdip, op, vnode_mount(vp), VTOI(vp),
+ td->td_proc->p_pid, cred);
+}
+
+int
+fdisp_wait_answ(struct fuse_dispatcher *fdip)
+{
+ int err = 0;
+
+ fdip->answ_stat = 0;
+ fuse_insert_callback(fdip->tick, fuse_standard_handler);
+ fuse_insert_message(fdip->tick);
+
+ if ((err = fticket_wait_answer(fdip->tick))) {
+ debug_printf("IPC: interrupted, err = %d\n", err);
+
+ fuse_lck_mtx_lock(fdip->tick->tk_aw_mtx);
+
+ if (fticket_answered(fdip->tick)) {
+ /*
+ * Just between noticing the interrupt and getting here,
+ * the standard handler has completed his job.
+ * So we drop the ticket and exit as usual.
+ */
+ debug_printf("IPC: already answered\n");
+ fuse_lck_mtx_unlock(fdip->tick->tk_aw_mtx);
+ goto out;
+ } else {
+ /*
+ * So we were faster than the standard handler.
+ * Then by setting the answered flag we get *him*
+ * to drop the ticket.
+ */
+ debug_printf("IPC: setting to answered\n");
+ fticket_set_answered(fdip->tick);
+ fuse_lck_mtx_unlock(fdip->tick->tk_aw_mtx);
+ return err;
+ }
+ }
+ debug_printf("IPC: not interrupted, err = %d\n", err);
+
+ if (fdip->tick->tk_aw_errno) {
+ debug_printf("IPC: explicit EIO-ing, tk_aw_errno = %d\n",
+ fdip->tick->tk_aw_errno);
+ err = EIO;
+ goto out;
+ }
+ if ((err = fdip->tick->tk_aw_ohead.error)) {
+ debug_printf("IPC: setting status to %d\n",
+ fdip->tick->tk_aw_ohead.error);
+ /*
+ * This means a "proper" fuse syscall error.
+ * We record this value so the caller will
+ * be able to know it's not a boring messaging
+ * failure, if she wishes so (and if not, she can
+ * just simply propagate the return value of this routine).
+ * [XXX Maybe a bitflag would do the job too,
+ * if other flags needed, this will be converted thusly.]
+ */
+ fdip->answ_stat = err;
+ goto out;
+ }
+ fdip->answ = fticket_resp(fdip->tick)->base;
+ fdip->iosize = fticket_resp(fdip->tick)->len;
+
+ debug_printf("IPC: all is well\n");
+
+ return 0;
+
+out:
+ debug_printf("IPC: dropping ticket, err = %d\n", err);
+
+ return err;
+}
+
+void
+fuse_ipc_init(void)
+{
+ ticket_zone = uma_zcreate("fuse_ticket", sizeof(struct fuse_ticket),
+ fticket_ctor, fticket_dtor, fticket_init, fticket_fini,
+ UMA_ALIGN_PTR, 0);
+}
+
+void
+fuse_ipc_destroy(void)
+{
+ uma_zdestroy(ticket_zone);
+}
diff --git a/sys/fs/fuse/fuse_ipc.h b/sys/fs/fuse/fuse_ipc.h
new file mode 100644
index 0000000..cd08969
--- /dev/null
+++ b/sys/fs/fuse/fuse_ipc.h
@@ -0,0 +1,423 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _FUSE_IPC_H_
+#define _FUSE_IPC_H_
+
+#include <sys/param.h>
+#include <sys/refcount.h>
+
+struct fuse_iov {
+ void *base;
+ size_t len;
+ size_t allocated_size;
+ int credit;
+};
+
+void fiov_init(struct fuse_iov *fiov, size_t size);
+void fiov_teardown(struct fuse_iov *fiov);
+void fiov_refresh(struct fuse_iov *fiov);
+void fiov_adjust(struct fuse_iov *fiov, size_t size);
+
+#define FUSE_DIMALLOC(fiov, spc1, spc2, amnt) \
+do { \
+ fiov_adjust(fiov, (sizeof(*(spc1)) + (amnt))); \
+ (spc1) = (fiov)->base; \
+ (spc2) = (char *)(fiov)->base + (sizeof(*(spc1))); \
+} while (0)
+
+#define FU_AT_LEAST(siz) max((siz), 160)
+
+#define FUSE_ASSERT_AW_DONE(ftick) \
+ KASSERT((ftick)->tk_aw_link.tqe_next == NULL && \
+ (ftick)->tk_aw_link.tqe_prev == NULL, \
+ ("FUSE: ticket still on answer delivery list %p", (ftick))) \
+
+#define FUSE_ASSERT_MS_DONE(ftick) \
+ KASSERT((ftick)->tk_ms_link.stqe_next == NULL, \
+ ("FUSE: ticket still on message list %p", (ftick)))
+
+struct fuse_ticket;
+struct fuse_data;
+
+typedef int fuse_handler_t(struct fuse_ticket *ftick, struct uio *uio);
+
+struct fuse_ticket {
+ /* fields giving the identity of the ticket */
+ uint64_t tk_unique;
+ struct fuse_data *tk_data;
+ int tk_flag;
+ u_int tk_refcount;
+
+ /* fields for initiating an upgoing message */
+ struct fuse_iov tk_ms_fiov;
+ void *tk_ms_bufdata;
+ size_t tk_ms_bufsize;
+ enum { FT_M_FIOV, FT_M_BUF } tk_ms_type;
+ STAILQ_ENTRY(fuse_ticket) tk_ms_link;
+
+ /* fields for handling answers coming from userspace */
+ struct fuse_iov tk_aw_fiov;
+ void *tk_aw_bufdata;
+ size_t tk_aw_bufsize;
+ enum { FT_A_FIOV, FT_A_BUF } tk_aw_type;
+
+ struct fuse_out_header tk_aw_ohead;
+ int tk_aw_errno;
+ struct mtx tk_aw_mtx;
+ fuse_handler_t *tk_aw_handler;
+ TAILQ_ENTRY(fuse_ticket) tk_aw_link;
+};
+
+#define FT_ANSW 0x01 /* request of ticket has already been answered */
+#define FT_DIRTY 0x04 /* ticket has been used */
+
+static __inline__
+struct fuse_iov *
+fticket_resp(struct fuse_ticket *ftick)
+{
+ return (&ftick->tk_aw_fiov);
+}
+
+static __inline__
+int
+fticket_answered(struct fuse_ticket *ftick)
+{
+ DEBUGX(FUSE_DEBUG_IPC, "-> ftick=%p\n", ftick);
+ mtx_assert(&ftick->tk_aw_mtx, MA_OWNED);
+ return (ftick->tk_flag & FT_ANSW);
+}
+
+static __inline__
+void
+fticket_set_answered(struct fuse_ticket *ftick)
+{
+ DEBUGX(FUSE_DEBUG_IPC, "-> ftick=%p\n", ftick);
+ mtx_assert(&ftick->tk_aw_mtx, MA_OWNED);
+ ftick->tk_flag |= FT_ANSW;
+}
+
+static __inline__
+enum fuse_opcode
+fticket_opcode(struct fuse_ticket *ftick)
+{
+ DEBUGX(FUSE_DEBUG_IPC, "-> ftick=%p\n", ftick);
+ return (((struct fuse_in_header *)(ftick->tk_ms_fiov.base))->opcode);
+}
+
+int fticket_pull(struct fuse_ticket *ftick, struct uio *uio);
+
+enum mountpri { FM_NOMOUNTED, FM_PRIMARY, FM_SECONDARY };
+
+/*
+ * The data representing a FUSE session.
+ */
+struct fuse_data {
+ struct cdev *fdev;
+ struct mount *mp;
+ struct vnode *vroot;
+ struct ucred *daemoncred;
+ int dataflags;
+ int ref;
+
+ struct mtx ms_mtx;
+ STAILQ_HEAD(, fuse_ticket) ms_head;
+
+ struct mtx aw_mtx;
+ TAILQ_HEAD(, fuse_ticket) aw_head;
+
+ u_long ticketer;
+
+ struct sx rename_lock;
+
+ uint32_t fuse_libabi_major;
+ uint32_t fuse_libabi_minor;
+
+ uint32_t max_write;
+ uint32_t max_read;
+ uint32_t subtype;
+ char volname[MAXPATHLEN];
+
+ struct selinfo ks_rsel;
+
+ int daemon_timeout;
+ uint64_t notimpl;
+};
+
+#define FSESS_DEAD 0x0001 /* session is to be closed */
+#define FSESS_UNUSED0 0x0002 /* unused */
+#define FSESS_INITED 0x0004 /* session has been inited */
+#define FSESS_DAEMON_CAN_SPY 0x0010 /* let non-owners access this fs */
+ /* (and being observed by the daemon) */
+#define FSESS_PUSH_SYMLINKS_IN 0x0020 /* prefix absolute symlinks with mp */
+#define FSESS_DEFAULT_PERMISSIONS 0x0040 /* kernel does permission checking */
+#define FSESS_NO_ATTRCACHE 0x0080 /* no attribute caching */
+#define FSESS_NO_READAHEAD 0x0100 /* no readaheads */
+#define FSESS_NO_DATACACHE 0x0200 /* disable buffer cache */
+#define FSESS_NO_NAMECACHE 0x0400 /* disable name cache */
+#define FSESS_NO_MMAP 0x0800 /* disable mmap */
+#define FSESS_BROKENIO 0x1000 /* fix broken io */
+
+extern int fuse_data_cache_enable;
+extern int fuse_data_cache_invalidate;
+extern int fuse_mmap_enable;
+extern int fuse_sync_resize;
+extern int fuse_fix_broken_io;
+
+static __inline__
+struct fuse_data *
+fuse_get_mpdata(struct mount *mp)
+{
+ return mp->mnt_data;
+}
+
+static __inline int
+fsess_isimpl(struct mount *mp, int opcode)
+{
+ struct fuse_data *data = fuse_get_mpdata(mp);
+
+ return (data->notimpl & (1ULL << opcode)) == 0;
+
+}
+static __inline void
+fsess_set_notimpl(struct mount *mp, int opcode)
+{
+ struct fuse_data *data = fuse_get_mpdata(mp);
+
+ data->notimpl |= (1ULL << opcode);
+}
+
+static __inline int
+fsess_opt_datacache(struct mount *mp)
+{
+ struct fuse_data *data = fuse_get_mpdata(mp);
+
+ return (fuse_data_cache_enable ||
+ (data->dataflags & FSESS_NO_DATACACHE) == 0);
+}
+
+static __inline int
+fsess_opt_mmap(struct mount *mp)
+{
+ struct fuse_data *data = fuse_get_mpdata(mp);
+
+ if (!(fuse_mmap_enable && fuse_data_cache_enable))
+ return 0;
+ return ((data->dataflags & (FSESS_NO_DATACACHE | FSESS_NO_MMAP)) == 0);
+}
+
+static __inline int
+fsess_opt_brokenio(struct mount *mp)
+{
+ struct fuse_data *data = fuse_get_mpdata(mp);
+
+ return (fuse_fix_broken_io || (data->dataflags & FSESS_BROKENIO));
+}
+
+static __inline__
+void
+fuse_ms_push(struct fuse_ticket *ftick)
+{
+ DEBUGX(FUSE_DEBUG_IPC, "ftick=%p refcount=%d\n",
+ ftick, ftick->tk_refcount + 1);
+ mtx_assert(&ftick->tk_data->ms_mtx, MA_OWNED);
+ refcount_acquire(&ftick->tk_refcount);
+ STAILQ_INSERT_TAIL(&ftick->tk_data->ms_head, ftick, tk_ms_link);
+}
+
+static __inline__
+struct fuse_ticket *
+fuse_ms_pop(struct fuse_data *data)
+{
+ struct fuse_ticket *ftick = NULL;
+
+ mtx_assert(&data->ms_mtx, MA_OWNED);
+
+ if ((ftick = STAILQ_FIRST(&data->ms_head))) {
+ STAILQ_REMOVE_HEAD(&data->ms_head, tk_ms_link);
+#ifdef INVARIANTS
+ ftick->tk_ms_link.stqe_next = NULL;
+#endif
+ }
+ DEBUGX(FUSE_DEBUG_IPC, "ftick=%p refcount=%d\n",
+ ftick, ftick ? ftick->tk_refcount : -1);
+
+ return ftick;
+}
+
+static __inline__
+void
+fuse_aw_push(struct fuse_ticket *ftick)
+{
+ DEBUGX(FUSE_DEBUG_IPC, "ftick=%p refcount=%d\n",
+ ftick, ftick->tk_refcount + 1);
+ mtx_assert(&ftick->tk_data->aw_mtx, MA_OWNED);
+ refcount_acquire(&ftick->tk_refcount);
+ TAILQ_INSERT_TAIL(&ftick->tk_data->aw_head, ftick, tk_aw_link);
+}
+
+static __inline__
+void
+fuse_aw_remove(struct fuse_ticket *ftick)
+{
+ DEBUGX(FUSE_DEBUG_IPC, "ftick=%p refcount=%d\n",
+ ftick, ftick->tk_refcount);
+ mtx_assert(&ftick->tk_data->aw_mtx, MA_OWNED);
+ TAILQ_REMOVE(&ftick->tk_data->aw_head, ftick, tk_aw_link);
+#ifdef INVARIANTS
+ ftick->tk_aw_link.tqe_next = NULL;
+ ftick->tk_aw_link.tqe_prev = NULL;
+#endif
+}
+
+static __inline__
+struct fuse_ticket *
+fuse_aw_pop(struct fuse_data *data)
+{
+ struct fuse_ticket *ftick = NULL;
+
+ mtx_assert(&data->aw_mtx, MA_OWNED);
+
+ if ((ftick = TAILQ_FIRST(&data->aw_head))) {
+ fuse_aw_remove(ftick);
+ }
+ DEBUGX(FUSE_DEBUG_IPC, "ftick=%p refcount=%d\n",
+ ftick, ftick ? ftick->tk_refcount : -1);
+
+ return ftick;
+}
+
+struct fuse_ticket *fuse_ticket_fetch(struct fuse_data *data);
+int fuse_ticket_drop(struct fuse_ticket *ftick);
+void fuse_insert_callback(struct fuse_ticket *ftick, fuse_handler_t *handler);
+void fuse_insert_message(struct fuse_ticket *ftick);
+
+static __inline__
+int
+fuse_libabi_geq(struct fuse_data *data, uint32_t abi_maj, uint32_t abi_min)
+{
+ return (data->fuse_libabi_major > abi_maj ||
+ (data->fuse_libabi_major == abi_maj && data->fuse_libabi_minor >= abi_min));
+}
+
+struct fuse_data *fdata_alloc(struct cdev *dev, struct ucred *cred);
+void fdata_trydestroy(struct fuse_data *data);
+void fdata_set_dead(struct fuse_data *data);
+
+static __inline__
+int
+fdata_get_dead(struct fuse_data *data)
+{
+ return (data->dataflags & FSESS_DEAD);
+}
+
+struct fuse_dispatcher {
+
+ struct fuse_ticket *tick;
+ struct fuse_in_header *finh;
+
+ void *indata;
+ size_t iosize;
+ uint64_t nodeid;
+ int answ_stat;
+ void *answ;
+};
+
+static __inline__
+void
+fdisp_init(struct fuse_dispatcher *fdisp, size_t iosize)
+{
+ DEBUGX(FUSE_DEBUG_IPC, "-> fdisp=%p, iosize=%zx\n", fdisp, iosize);
+ fdisp->iosize = iosize;
+ fdisp->tick = NULL;
+}
+
+static __inline__
+void
+fdisp_destroy(struct fuse_dispatcher *fdisp)
+{
+ DEBUGX(FUSE_DEBUG_IPC, "-> fdisp=%p, ftick=%p\n", fdisp, fdisp->tick);
+ fuse_ticket_drop(fdisp->tick);
+#ifdef INVARIANTS
+ fdisp->tick = NULL;
+#endif
+}
+
+void fdisp_make(struct fuse_dispatcher *fdip, enum fuse_opcode op,
+ struct mount *mp, uint64_t nid, struct thread *td,
+ struct ucred *cred);
+
+void fdisp_make_pid(struct fuse_dispatcher *fdip, enum fuse_opcode op,
+ struct mount *mp, uint64_t nid, pid_t pid,
+ struct ucred *cred);
+
+void fdisp_make_vp(struct fuse_dispatcher *fdip, enum fuse_opcode op,
+ struct vnode *vp, struct thread *td, struct ucred *cred);
+
+int fdisp_wait_answ(struct fuse_dispatcher *fdip);
+
+static __inline__
+int
+fdisp_simple_putget_vp(struct fuse_dispatcher *fdip, enum fuse_opcode op,
+ struct vnode *vp, struct thread *td, struct ucred *cred)
+{
+ DEBUGX(FUSE_DEBUG_IPC, "-> fdip=%p, opcode=%d, vp=%p\n", fdip, op, vp);
+ fdisp_make_vp(fdip, op, vp, td, cred);
+ return fdisp_wait_answ(fdip);
+}
+
+#endif /* _FUSE_IPC_H_ */
diff --git a/sys/fs/fuse/fuse_kernel.h b/sys/fs/fuse/fuse_kernel.h
new file mode 100644
index 0000000..07cd4a9
--- /dev/null
+++ b/sys/fs/fuse/fuse_kernel.h
@@ -0,0 +1,373 @@
+/*-
+ * This file defines the kernel interface of FUSE
+ * Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu>
+ *
+ * This program can be distributed under the terms of the GNU GPL.
+ * See the file COPYING.
+ *
+ * This -- and only this -- header file may also be distributed under
+ * the terms of the BSD Licence as follows:
+ *
+ * Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef linux
+#include <sys/types.h>
+#define __u64 uint64_t
+#define __u32 uint32_t
+#define __s32 int32_t
+#else
+#include <asm/types.h>
+#include <linux/major.h>
+#endif
+
+/** Version number of this interface */
+#define FUSE_KERNEL_VERSION 7
+
+/** Minor version number of this interface */
+#define FUSE_KERNEL_MINOR_VERSION 8
+
+/** The node ID of the root inode */
+#define FUSE_ROOT_ID 1
+
+/** The major number of the fuse character device */
+#define FUSE_MAJOR MISC_MAJOR
+
+/** The minor number of the fuse character device */
+#define FUSE_MINOR 229
+
+/* Make sure all structures are padded to 64bit boundary, so 32bit
+ userspace works under 64bit kernels */
+
+struct fuse_attr {
+ __u64 ino;
+ __u64 size;
+ __u64 blocks;
+ __u64 atime;
+ __u64 mtime;
+ __u64 ctime;
+ __u32 atimensec;
+ __u32 mtimensec;
+ __u32 ctimensec;
+ __u32 mode;
+ __u32 nlink;
+ __u32 uid;
+ __u32 gid;
+ __u32 rdev;
+};
+
+struct fuse_kstatfs {
+ __u64 blocks;
+ __u64 bfree;
+ __u64 bavail;
+ __u64 files;
+ __u64 ffree;
+ __u32 bsize;
+ __u32 namelen;
+ __u32 frsize;
+ __u32 padding;
+ __u32 spare[6];
+};
+
+struct fuse_file_lock {
+ __u64 start;
+ __u64 end;
+ __u32 type;
+ __u32 pid; /* tgid */
+};
+
+/**
+ * Bitmasks for fuse_setattr_in.valid
+ */
+#define FATTR_MODE (1 << 0)
+#define FATTR_UID (1 << 1)
+#define FATTR_GID (1 << 2)
+#define FATTR_SIZE (1 << 3)
+#define FATTR_ATIME (1 << 4)
+#define FATTR_MTIME (1 << 5)
+#define FATTR_FH (1 << 6)
+
+/**
+ * Flags returned by the OPEN request
+ *
+ * FOPEN_DIRECT_IO: bypass page cache for this open file
+ * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
+ */
+#define FOPEN_DIRECT_IO (1 << 0)
+#define FOPEN_KEEP_CACHE (1 << 1)
+
+/**
+ * INIT request/reply flags
+ */
+#define FUSE_ASYNC_READ (1 << 0)
+#define FUSE_POSIX_LOCKS (1 << 1)
+
+/**
+ * Release flags
+ */
+#define FUSE_RELEASE_FLUSH (1 << 0)
+
+enum fuse_opcode {
+ FUSE_LOOKUP = 1,
+ FUSE_FORGET = 2, /* no reply */
+ FUSE_GETATTR = 3,
+ FUSE_SETATTR = 4,
+ FUSE_READLINK = 5,
+ FUSE_SYMLINK = 6,
+ FUSE_MKNOD = 8,
+ FUSE_MKDIR = 9,
+ FUSE_UNLINK = 10,
+ FUSE_RMDIR = 11,
+ FUSE_RENAME = 12,
+ FUSE_LINK = 13,
+ FUSE_OPEN = 14,
+ FUSE_READ = 15,
+ FUSE_WRITE = 16,
+ FUSE_STATFS = 17,
+ FUSE_RELEASE = 18,
+ FUSE_FSYNC = 20,
+ FUSE_SETXATTR = 21,
+ FUSE_GETXATTR = 22,
+ FUSE_LISTXATTR = 23,
+ FUSE_REMOVEXATTR = 24,
+ FUSE_FLUSH = 25,
+ FUSE_INIT = 26,
+ FUSE_OPENDIR = 27,
+ FUSE_READDIR = 28,
+ FUSE_RELEASEDIR = 29,
+ FUSE_FSYNCDIR = 30,
+ FUSE_GETLK = 31,
+ FUSE_SETLK = 32,
+ FUSE_SETLKW = 33,
+ FUSE_ACCESS = 34,
+ FUSE_CREATE = 35,
+ FUSE_INTERRUPT = 36,
+ FUSE_BMAP = 37,
+ FUSE_DESTROY = 38,
+};
+
+/* The read buffer is required to be at least 8k, but may be much larger */
+#define FUSE_MIN_READ_BUFFER 8192
+
+struct fuse_entry_out {
+ __u64 nodeid; /* Inode ID */
+ __u64 generation; /* Inode generation: nodeid:gen must
+ be unique for the fs's lifetime */
+ __u64 entry_valid; /* Cache timeout for the name */
+ __u64 attr_valid; /* Cache timeout for the attributes */
+ __u32 entry_valid_nsec;
+ __u32 attr_valid_nsec;
+ struct fuse_attr attr;
+};
+
+struct fuse_forget_in {
+ __u64 nlookup;
+};
+
+struct fuse_attr_out {
+ __u64 attr_valid; /* Cache timeout for the attributes */
+ __u32 attr_valid_nsec;
+ __u32 dummy;
+ struct fuse_attr attr;
+};
+
+struct fuse_mkdir_in {
+ __u32 mode;
+ __u32 padding;
+};
+
+struct fuse_rename_in {
+ __u64 newdir;
+};
+
+struct fuse_link_in {
+ __u64 oldnodeid;
+};
+
+struct fuse_setattr_in {
+ __u32 valid;
+ __u32 padding;
+ __u64 fh;
+ __u64 size;
+ __u64 unused1;
+ __u64 atime;
+ __u64 mtime;
+ __u64 unused2;
+ __u32 atimensec;
+ __u32 mtimensec;
+ __u32 unused3;
+ __u32 mode;
+ __u32 unused4;
+ __u32 uid;
+ __u32 gid;
+ __u32 unused5;
+};
+
+struct fuse_open_in {
+ __u32 flags;
+ __u32 mode;
+};
+
+struct fuse_open_out {
+ __u64 fh;
+ __u32 open_flags;
+ __u32 padding;
+};
+
+struct fuse_release_in {
+ __u64 fh;
+ __u32 flags;
+ __u32 release_flags;
+ __u64 lock_owner;
+};
+
+struct fuse_flush_in {
+ __u64 fh;
+ __u32 unused;
+ __u32 padding;
+ __u64 lock_owner;
+};
+
+struct fuse_read_in {
+ __u64 fh;
+ __u64 offset;
+ __u32 size;
+ __u32 padding;
+};
+
+struct fuse_write_in {
+ __u64 fh;
+ __u64 offset;
+ __u32 size;
+ __u32 write_flags;
+};
+
+struct fuse_write_out {
+ __u32 size;
+ __u32 padding;
+};
+
+#define FUSE_COMPAT_STATFS_SIZE 48
+
+struct fuse_statfs_out {
+ struct fuse_kstatfs st;
+};
+
+struct fuse_fsync_in {
+ __u64 fh;
+ __u32 fsync_flags;
+ __u32 padding;
+};
+
+struct fuse_setxattr_in {
+ __u32 size;
+ __u32 flags;
+};
+
+struct fuse_getxattr_in {
+ __u32 size;
+ __u32 padding;
+};
+
+struct fuse_getxattr_out {
+ __u32 size;
+ __u32 padding;
+};
+
+struct fuse_lk_in {
+ __u64 fh;
+ __u64 owner;
+ struct fuse_file_lock lk;
+};
+
+struct fuse_lk_out {
+ struct fuse_file_lock lk;
+};
+
+struct fuse_access_in {
+ __u32 mask;
+ __u32 padding;
+};
+
+struct fuse_init_in {
+ __u32 major;
+ __u32 minor;
+ __u32 max_readahead;
+ __u32 flags;
+};
+
+struct fuse_init_out {
+ __u32 major;
+ __u32 minor;
+ __u32 max_readahead;
+ __u32 flags;
+ __u32 unused;
+ __u32 max_write;
+};
+
+struct fuse_interrupt_in {
+ __u64 unique;
+};
+
+struct fuse_bmap_in {
+ __u64 block;
+ __u32 blocksize;
+ __u32 padding;
+};
+
+struct fuse_bmap_out {
+ __u64 block;
+};
+
+struct fuse_in_header {
+ __u32 len;
+ __u32 opcode;
+ __u64 unique;
+ __u64 nodeid;
+ __u32 uid;
+ __u32 gid;
+ __u32 pid;
+ __u32 padding;
+};
+
+struct fuse_out_header {
+ __u32 len;
+ __s32 error;
+ __u64 unique;
+};
+
+struct fuse_dirent {
+ __u64 ino;
+ __u64 off;
+ __u32 namelen;
+ __u32 type;
+ char name[0];
+};
+
+#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
+#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
+#define FUSE_DIRENT_SIZE(d) \
+ FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
diff --git a/sys/fs/fuse/fuse_main.c b/sys/fs/fuse/fuse_main.c
new file mode 100644
index 0000000..bf73a45f
--- /dev/null
+++ b/sys/fs/fuse/fuse_main.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/conf.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/stat.h>
+#include <sys/file.h>
+#include <sys/buf.h>
+#include <sys/sysctl.h>
+
+#include "fuse.h"
+
+static void fuse_bringdown(eventhandler_tag eh_tag);
+static int fuse_loader(struct module *m, int what, void *arg);
+
+struct mtx fuse_mtx;
+
+extern struct vfsops fuse_vfsops;
+extern struct cdevsw fuse_cdevsw;
+extern struct vop_vector fuse_vnops;
+extern int fuse_pbuf_freecnt;
+
+static struct vfsconf fuse_vfsconf = {
+ .vfc_version = VFS_VERSION,
+ .vfc_name = "fusefs",
+ .vfc_vfsops = &fuse_vfsops,
+ .vfc_typenum = -1,
+ .vfc_flags = VFCF_SYNTHETIC
+};
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, kernelabi_major, CTLFLAG_RD,
+ 0, FUSE_KERNEL_VERSION, "FUSE kernel abi major version");
+SYSCTL_INT(_vfs_fuse, OID_AUTO, kernelabi_minor, CTLFLAG_RD,
+ 0, FUSE_KERNEL_MINOR_VERSION, "FUSE kernel abi minor version");
+
+/******************************
+ *
+ * >>> Module management stuff
+ *
+ ******************************/
+
+static void
+fuse_bringdown(eventhandler_tag eh_tag)
+{
+
+ fuse_ipc_destroy();
+ fuse_device_destroy();
+ mtx_destroy(&fuse_mtx);
+}
+
+static int
+fuse_loader(struct module *m, int what, void *arg)
+{
+ static eventhandler_tag eh_tag = NULL;
+ int err = 0;
+
+ switch (what) {
+ case MOD_LOAD: /* kldload */
+ fuse_pbuf_freecnt = nswbuf / 2 + 1;
+ mtx_init(&fuse_mtx, "fuse_mtx", NULL, MTX_DEF);
+ err = fuse_device_init();
+ if (err) {
+ mtx_destroy(&fuse_mtx);
+ return (err);
+ }
+ fuse_ipc_init();
+
+ /* vfs_modevent ignores its first arg */
+ if ((err = vfs_modevent(NULL, what, &fuse_vfsconf)))
+ fuse_bringdown(eh_tag);
+ else
+ printf("fuse-freebsd: version %s, FUSE ABI %d.%d\n",
+ FUSE_FREEBSD_VERSION,
+ FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
+
+ break;
+ case MOD_UNLOAD:
+ if ((err = vfs_modevent(NULL, what, &fuse_vfsconf)))
+ return (err);
+ fuse_bringdown(eh_tag);
+ break;
+ default:
+ return (EINVAL);
+ }
+
+ return (err);
+}
+
+/* Registering the module */
+
+static moduledata_t fuse_moddata = {
+ "fuse",
+ fuse_loader,
+ &fuse_vfsconf
+};
+
+DECLARE_MODULE(fuse, fuse_moddata, SI_SUB_VFS, SI_ORDER_MIDDLE);
+MODULE_VERSION(fuse, 1);
diff --git a/sys/fs/fuse/fuse_node.c b/sys/fs/fuse/fuse_node.c
new file mode 100644
index 0000000..3838ab7
--- /dev/null
+++ b/sys/fs/fuse/fuse_node.c
@@ -0,0 +1,384 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/sx.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/vnode.h>
+#include <sys/namei.h>
+#include <sys/mount.h>
+#include <sys/sysctl.h>
+#include <sys/fcntl.h>
+#include <sys/fnv_hash.h>
+#include <sys/priv.h>
+#include <security/mac/mac_framework.h>
+#include <vm/vm.h>
+#include <vm/vm_extern.h>
+
+#include "fuse.h"
+#include "fuse_node.h"
+#include "fuse_internal.h"
+#include "fuse_io.h"
+#include "fuse_ipc.h"
+
+#define FUSE_DEBUG_MODULE VNOPS
+#include "fuse_debug.h"
+
+MALLOC_DEFINE(M_FUSEVN, "fuse_vnode", "fuse vnode private data");
+
+static int fuse_node_count = 0;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, node_count, CTLFLAG_RD,
+ &fuse_node_count, 0, "");
+
+int fuse_data_cache_enable = 1;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, data_cache_enable, CTLFLAG_RW,
+ &fuse_data_cache_enable, 0, "");
+
+int fuse_data_cache_invalidate = 0;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, data_cache_invalidate, CTLFLAG_RW,
+ &fuse_data_cache_invalidate, 0, "");
+
+int fuse_mmap_enable = 1;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, mmap_enable, CTLFLAG_RW,
+ &fuse_mmap_enable, 0, "");
+
+int fuse_refresh_size = 0;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, refresh_size, CTLFLAG_RW,
+ &fuse_refresh_size, 0, "");
+
+int fuse_sync_resize = 1;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, sync_resize, CTLFLAG_RW,
+ &fuse_sync_resize, 0, "");
+
+int fuse_fix_broken_io = 0;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, fix_broken_io, CTLFLAG_RW,
+ &fuse_fix_broken_io, 0, "");
+
+static void
+fuse_vnode_init(struct vnode *vp, struct fuse_vnode_data *fvdat,
+ uint64_t nodeid, enum vtype vtyp)
+{
+ int i;
+
+ fvdat->nid = nodeid;
+ if (nodeid == FUSE_ROOT_ID) {
+ vp->v_vflag |= VV_ROOT;
+ }
+ vp->v_type = vtyp;
+ vp->v_data = fvdat;
+
+ for (i = 0; i < FUFH_MAXTYPE; i++)
+ fvdat->fufh[i].fh_type = FUFH_INVALID;
+
+ atomic_add_acq_int(&fuse_node_count, 1);
+}
+
+void
+fuse_vnode_destroy(struct vnode *vp)
+{
+ struct fuse_vnode_data *fvdat = vp->v_data;
+
+ vp->v_data = NULL;
+ free(fvdat, M_FUSEVN);
+
+ atomic_subtract_acq_int(&fuse_node_count, 1);
+}
+
+static int
+fuse_vnode_cmp(struct vnode *vp, void *nidp)
+{
+ return (VTOI(vp) != *((uint64_t *)nidp));
+}
+
+static uint32_t __inline
+fuse_vnode_hash(uint64_t id)
+{
+ return (fnv_32_buf(&id, sizeof(id), FNV1_32_INIT));
+}
+
+static int
+fuse_vnode_alloc(struct mount *mp,
+ struct thread *td,
+ uint64_t nodeid,
+ enum vtype vtyp,
+ struct vnode **vpp)
+{
+ struct fuse_vnode_data *fvdat;
+ struct vnode *vp2;
+ int err = 0;
+
+ DEBUG("been asked for vno #%ju\n", (uintmax_t)nodeid);
+
+ if (vtyp == VNON) {
+ return EINVAL;
+ }
+ *vpp = NULL;
+ err = vfs_hash_get(mp, fuse_vnode_hash(nodeid), LK_EXCLUSIVE, td, vpp,
+ fuse_vnode_cmp, &nodeid);
+ if (err)
+ return (err);
+
+ if (*vpp) {
+ MPASS((*vpp)->v_type == vtyp && (*vpp)->v_data != NULL);
+ DEBUG("vnode taken from hash\n");
+ return (0);
+ }
+ fvdat = malloc(sizeof(*fvdat), M_FUSEVN, M_WAITOK | M_ZERO);
+ err = getnewvnode("fuse", mp, &fuse_vnops, vpp);
+ if (err) {
+ free(fvdat, M_FUSEVN);
+ return (err);
+ }
+ lockmgr((*vpp)->v_vnlock, LK_EXCLUSIVE, NULL);
+ fuse_vnode_init(*vpp, fvdat, nodeid, vtyp);
+ err = insmntque(*vpp, mp);
+ ASSERT_VOP_ELOCKED(*vpp, "fuse_vnode_alloc");
+ if (err) {
+ free(fvdat, M_FUSEVN);
+ *vpp = NULL;
+ return (err);
+ }
+ err = vfs_hash_insert(*vpp, fuse_vnode_hash(nodeid), LK_EXCLUSIVE,
+ td, &vp2, fuse_vnode_cmp, &nodeid);
+ if (err)
+ return (err);
+ if (vp2 != NULL) {
+ *vpp = vp2;
+ return (0);
+ }
+
+ ASSERT_VOP_ELOCKED(*vpp, "fuse_vnode_alloc");
+
+ return (0);
+}
+
+int
+fuse_vnode_get(struct mount *mp,
+ uint64_t nodeid,
+ struct vnode *dvp,
+ struct vnode **vpp,
+ struct componentname *cnp,
+ enum vtype vtyp)
+{
+ struct thread *td = (cnp != NULL ? cnp->cn_thread : curthread);
+ int err = 0;
+
+ debug_printf("dvp=%p\n", dvp);
+
+ err = fuse_vnode_alloc(mp, td, nodeid, vtyp, vpp);
+ if (err) {
+ return err;
+ }
+ if (dvp != NULL) {
+ MPASS((cnp->cn_flags & ISDOTDOT) == 0);
+ MPASS(!(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.'));
+ fuse_vnode_setparent(*vpp, dvp);
+ }
+ if (dvp != NULL && cnp != NULL && (cnp->cn_flags & MAKEENTRY) != 0) {
+ ASSERT_VOP_LOCKED(*vpp, "fuse_vnode_get");
+ ASSERT_VOP_LOCKED(dvp, "fuse_vnode_get");
+ cache_enter(dvp, *vpp, cnp);
+ }
+
+ /*
+ * In userland, libfuse uses cached lookups for dot and dotdot entries,
+ * thus it does not really bump the nlookup counter for forget.
+ * Follow the same semantic and avoid tu bump it in order to keep
+ * nlookup counters consistent.
+ */
+ if (cnp == NULL || ((cnp->cn_flags & ISDOTDOT) == 0 &&
+ (cnp->cn_namelen != 1 || cnp->cn_nameptr[0] != '.')))
+ VTOFUD(*vpp)->nlookup++;
+
+ return 0;
+}
+
+void
+fuse_vnode_open(struct vnode *vp, int32_t fuse_open_flags, struct thread *td)
+{
+ /*
+ * Funcation is called for every vnode open.
+ * Merge fuse_open_flags it may be 0
+ *
+ * XXXIP: Handle FOPEN_DIRECT_IO and FOPEN_KEEP_CACHE
+ */
+
+ if (vnode_vtype(vp) == VREG) {
+ /* XXXIP prevent getattr, by using cached node size */
+ vnode_create_vobject(vp, 0, td);
+ }
+}
+
+int
+fuse_isvalid_attr(struct vnode *vp)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct timespec uptsp;
+
+ nanouptime(&uptsp);
+ return fuse_timespec_cmp(&uptsp, &fvdat->cached_attrs_valid, <=);
+}
+
+int
+fuse_vnode_savesize(struct vnode *vp, struct ucred *cred)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct thread *td = curthread;
+ struct fuse_filehandle *fufh = NULL;
+ struct fuse_dispatcher fdi;
+ struct fuse_setattr_in *fsai;
+ int err = 0;
+
+ DEBUG("inode=%ju size=%ju\n", (uintmax_t)VTOI(vp),
+ (uintmax_t)fvdat->filesize);
+ ASSERT_VOP_ELOCKED(vp, "fuse_io_extend");
+
+ if (fuse_isdeadfs(vp)) {
+ return EBADF;
+ }
+ if (vnode_vtype(vp) == VDIR) {
+ return EISDIR;
+ }
+ if (vfs_isrdonly(vnode_mount(vp))) {
+ return EROFS;
+ }
+ if (cred == NULL) {
+ cred = td->td_ucred;
+ }
+ fdisp_init(&fdi, sizeof(*fsai));
+ fdisp_make_vp(&fdi, FUSE_SETATTR, vp, td, cred);
+ fsai = fdi.indata;
+ fsai->valid = 0;
+
+ /* Truncate to a new value. */
+ fsai->size = fvdat->filesize;
+ fsai->valid |= FATTR_SIZE;
+
+ fuse_filehandle_getrw(vp, FUFH_WRONLY, &fufh);
+ if (fufh) {
+ fsai->fh = fufh->fh_id;
+ fsai->valid |= FATTR_FH;
+ }
+ err = fdisp_wait_answ(&fdi);
+ fdisp_destroy(&fdi);
+ if (err == 0)
+ fvdat->flag &= ~FN_SIZECHANGE;
+
+ fuse_invalidate_attr(vp);
+
+ return err;
+}
+
+void
+fuse_vnode_refreshsize(struct vnode *vp, struct ucred *cred)
+{
+
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct vattr va;
+
+ if ((fvdat->flag & FN_SIZECHANGE) != 0 ||
+ (fuse_refresh_size == 0 && fvdat->filesize != 0) ||
+ fuse_isvalid_attr(vp))
+ return;
+
+ VOP_GETATTR(vp, &va, cred);
+ DEBUG("refreshed file size: %jd\n", (intmax_t)VTOFUD(vp)->filesize);
+}
+
+int
+fuse_vnode_setsize(struct vnode *vp, struct ucred *cred, off_t newsize)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ off_t oldsize;
+ int err = 0;
+
+ DEBUG("inode=%ju oldsize=%ju newsize=%ju\n",
+ (uintmax_t)VTOI(vp), (uintmax_t)fvdat->filesize,
+ (uintmax_t)newsize);
+ ASSERT_VOP_ELOCKED(vp, "fuse_vnode_setsize");
+
+ oldsize = fvdat->filesize;
+ fvdat->filesize = newsize;
+ fvdat->flag |= FN_SIZECHANGE;
+
+ if (newsize < oldsize) {
+ err = vtruncbuf(vp, cred, newsize, fuse_iosize(vp));
+ }
+ vnode_pager_setsize(vp, newsize);
+ fuse_invalidate_attr(vp);
+
+ return err;
+}
diff --git a/sys/fs/fuse/fuse_node.h b/sys/fs/fuse/fuse_node.h
new file mode 100644
index 0000000..45b15a4
--- /dev/null
+++ b/sys/fs/fuse/fuse_node.h
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _FUSE_NODE_H_
+#define _FUSE_NODE_H_
+
+#include <sys/types.h>
+#include <sys/mutex.h>
+
+#include "fuse_file.h"
+
+#define FN_REVOKED 0x00000020
+#define FN_FLUSHINPROG 0x00000040
+#define FN_FLUSHWANT 0x00000080
+#define FN_SIZECHANGE 0x00000100
+
+struct fuse_vnode_data {
+ /** self **/
+ uint64_t nid;
+
+ /** parent **/
+ /* XXXIP very likely to be stale, it's not updated in rename() */
+ uint64_t parent_nid;
+
+ /** I/O **/
+ struct fuse_filehandle fufh[FUFH_MAXTYPE];
+
+ /** flags **/
+ uint32_t flag;
+
+ /** meta **/
+ struct timespec cached_attrs_valid;
+ struct vattr cached_attrs;
+ off_t filesize;
+ uint64_t nlookup;
+ enum vtype vtype;
+};
+
+#define VTOFUD(vp) \
+ ((struct fuse_vnode_data *)((vp)->v_data))
+#define VTOI(vp) (VTOFUD(vp)->nid)
+#define VTOVA(vp) (&(VTOFUD(vp)->cached_attrs))
+#define VTOILLU(vp) ((uint64_t)(VTOFUD(vp) ? VTOI(vp) : 0))
+
+#define FUSE_NULL_ID 0
+
+extern struct vop_vector fuse_vnops;
+
+static __inline__
+void
+fuse_invalidate_attr(struct vnode *vp)
+{
+ if (VTOFUD(vp)) {
+ bzero(&VTOFUD(vp)->cached_attrs_valid, sizeof(struct timespec));
+ }
+}
+
+static __inline void
+fuse_vnode_setparent(struct vnode *vp, struct vnode *dvp)
+{
+ if (dvp != NULL && vp->v_type == VDIR) {
+ MPASS(dvp->v_type == VDIR);
+ VTOFUD(vp)->parent_nid = VTOI(dvp);
+ }
+}
+
+int fuse_isvalid_attr(struct vnode *vp);
+
+void fuse_vnode_destroy(struct vnode *vp);
+
+int fuse_vnode_get(struct mount *mp,
+ uint64_t nodeid,
+ struct vnode *dvp,
+ struct vnode **vpp,
+ struct componentname *cnp,
+ enum vtype vtyp);
+
+void fuse_vnode_open(struct vnode *vp,
+ int32_t fuse_open_flags,
+ struct thread *td);
+
+void fuse_vnode_refreshsize(struct vnode *vp, struct ucred *cred);
+
+int fuse_vnode_savesize(struct vnode *vp, struct ucred *cred);
+
+int fuse_vnode_setsize(struct vnode *vp, struct ucred *cred, off_t newsize);
+
+#endif /* _FUSE_NODE_H_ */
diff --git a/sys/fs/fuse/fuse_param.h b/sys/fs/fuse/fuse_param.h
new file mode 100644
index 0000000..493c385
--- /dev/null
+++ b/sys/fs/fuse/fuse_param.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _FUSE_PARAM_H_
+#define _FUSE_PARAM_H_
+
+/*
+ * This is the prefix ("fuse" by default) of the name of a FUSE device node
+ * in devfs. The suffix is the device number. "/dev/fuse0" is the first FUSE
+ * device by default. If you change the prefix from the default to something
+ * else, the user-space FUSE library will need to know about it too.
+ */
+#define FUSE_DEVICE_BASENAME "fuse"
+
+/*
+ * This is the number of /dev/fuse<n> nodes we will create. <n> goes from
+ * 0 to (FUSE_NDEVICES - 1).
+ */
+#define FUSE_NDEVICES 16
+
+/*
+ * This is the default block size of the virtual storage devices that are
+ * implicitly implemented by the FUSE kernel extension. This can be changed
+ * on a per-mount basis (there's one such virtual device for each mount).
+ */
+#define FUSE_DEFAULT_BLOCKSIZE 4096
+
+/*
+ * This is default I/O size used while accessing the virtual storage devices.
+ * This can be changed on a per-mount basis.
+ */
+#define FUSE_DEFAULT_IOSIZE 4096
+
+#ifdef KERNEL
+
+/*
+ * This is the soft upper limit on the number of "request tickets" FUSE's
+ * user-kernel IPC layer can have for a given mount. This can be modified
+ * through the fuse.* sysctl interface.
+ */
+#define FUSE_DEFAULT_MAX_FREE_TICKETS 1024
+
+#define FUSE_DEFAULT_IOV_PERMANENT_BUFSIZE (1L << 19)
+#define FUSE_DEFAULT_IOV_CREDIT 16
+
+#endif
+
+#define FUSE_LINK_MAX LINK_MAX
+
+#endif /* _FUSE_PARAM_H_ */
diff --git a/sys/fs/fuse/fuse_vfsops.c b/sys/fs/fuse/fuse_vfsops.c
new file mode 100644
index 0000000..b8244ec
--- /dev/null
+++ b/sys/fs/fuse/fuse_vfsops.c
@@ -0,0 +1,533 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/capability.h>
+#include <sys/conf.h>
+#include <sys/filedesc.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/sx.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/vnode.h>
+#include <sys/namei.h>
+#include <sys/mount.h>
+#include <sys/sysctl.h>
+#include <sys/fcntl.h>
+
+#include "fuse.h"
+#include "fuse_param.h"
+#include "fuse_node.h"
+#include "fuse_ipc.h"
+#include "fuse_internal.h"
+
+#include <sys/priv.h>
+#include <security/mac/mac_framework.h>
+
+#define FUSE_DEBUG_MODULE VFSOPS
+#include "fuse_debug.h"
+
+/* This will do for privilege types for now */
+#ifndef PRIV_VFS_FUSE_ALLOWOTHER
+#define PRIV_VFS_FUSE_ALLOWOTHER PRIV_VFS_MOUNT_NONUSER
+#endif
+#ifndef PRIV_VFS_FUSE_MOUNT_NONUSER
+#define PRIV_VFS_FUSE_MOUNT_NONUSER PRIV_VFS_MOUNT_NONUSER
+#endif
+#ifndef PRIV_VFS_FUSE_SYNC_UNMOUNT
+#define PRIV_VFS_FUSE_SYNC_UNMOUNT PRIV_VFS_MOUNT_NONUSER
+#endif
+
+static vfs_mount_t fuse_vfsop_mount;
+static vfs_unmount_t fuse_vfsop_unmount;
+static vfs_root_t fuse_vfsop_root;
+static vfs_statfs_t fuse_vfsop_statfs;
+
+struct vfsops fuse_vfsops = {
+ .vfs_mount = fuse_vfsop_mount,
+ .vfs_unmount = fuse_vfsop_unmount,
+ .vfs_root = fuse_vfsop_root,
+ .vfs_statfs = fuse_vfsop_statfs,
+};
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, init_backgrounded, CTLFLAG_RD,
+ 0, 1, "indicate async handshake");
+static int fuse_enforce_dev_perms = 0;
+
+SYSCTL_LONG(_vfs_fuse, OID_AUTO, enforce_dev_perms, CTLFLAG_RW,
+ &fuse_enforce_dev_perms, 0,
+ "enforce fuse device permissions for secondary mounts");
+static unsigned sync_unmount = 1;
+
+SYSCTL_UINT(_vfs_fuse, OID_AUTO, sync_unmount, CTLFLAG_RW,
+ &sync_unmount, 0, "specify when to use synchronous unmount");
+
+MALLOC_DEFINE(M_FUSEVFS, "fuse_filesystem", "buffer for fuse vfs layer");
+
+static int
+fuse_getdevice(const char *fspec, struct thread *td, struct cdev **fdevp)
+{
+ struct nameidata nd, *ndp = &nd;
+ struct vnode *devvp;
+ struct cdev *fdev;
+ int err;
+
+ /*
+ * Not an update, or updating the name: look up the name
+ * and verify that it refers to a sensible disk device.
+ */
+
+ NDINIT(ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, fspec, td);
+ if ((err = namei(ndp)) != 0)
+ return err;
+ NDFREE(ndp, NDF_ONLY_PNBUF);
+ devvp = ndp->ni_vp;
+
+ if (devvp->v_type != VCHR) {
+ vrele(devvp);
+ return ENXIO;
+ }
+ fdev = devvp->v_rdev;
+ dev_ref(fdev);
+
+ if (fuse_enforce_dev_perms) {
+ /*
+ * Check if mounter can open the fuse device.
+ *
+ * This has significance only if we are doing a secondary mount
+ * which doesn't involve actually opening fuse devices, but we
+ * still want to enforce the permissions of the device (in
+ * order to keep control over the circle of fuse users).
+ *
+ * (In case of primary mounts, we are either the superuser so
+ * we can do anything anyway, or we can mount only if the
+ * device is already opened by us, ie. we are permitted to open
+ * the device.)
+ */
+#if 0
+#ifdef MAC
+ err = mac_check_vnode_open(td->td_ucred, devvp, VREAD | VWRITE);
+ if (!err)
+#endif
+#endif /* 0 */
+ err = VOP_ACCESS(devvp, VREAD | VWRITE, td->td_ucred, td);
+ if (err) {
+ vrele(devvp);
+ dev_rel(fdev);
+ return err;
+ }
+ }
+ /*
+ * according to coda code, no extra lock is needed --
+ * although in sys/vnode.h this field is marked "v"
+ */
+ vrele(devvp);
+
+ if (!fdev->si_devsw ||
+ strcmp("fuse", fdev->si_devsw->d_name)) {
+ dev_rel(fdev);
+ return ENXIO;
+ }
+ *fdevp = fdev;
+
+ return 0;
+}
+
+#define FUSE_FLAGOPT(fnam, fval) do { \
+ vfs_flagopt(opts, #fnam, &mntopts, fval); \
+ vfs_flagopt(opts, "__" #fnam, &__mntopts, fval); \
+} while (0)
+
+static int
+fuse_vfsop_mount(struct mount *mp)
+{
+ int err;
+
+ uint64_t mntopts, __mntopts;
+ int max_read_set;
+ uint32_t max_read;
+ int daemon_timeout;
+ int fd;
+
+ size_t len;
+
+ struct cdev *fdev;
+ struct fuse_data *data;
+ struct thread *td;
+ struct file *fp, *fptmp;
+ char *fspec, *subtype;
+ struct vfsoptlist *opts;
+
+ subtype = NULL;
+ max_read_set = 0;
+ max_read = ~0;
+ err = 0;
+ mntopts = 0;
+ __mntopts = 0;
+ td = curthread;
+
+ fuse_trace_printf_vfsop();
+
+ if (mp->mnt_flag & MNT_UPDATE)
+ return EOPNOTSUPP;
+
+ mp->mnt_flag |= MNT_SYNCHRONOUS;
+ mp->mnt_data = NULL;
+ /* Get the new options passed to mount */
+ opts = mp->mnt_optnew;
+
+ if (!opts)
+ return EINVAL;
+
+ /* `fspath' contains the mount point (eg. /mnt/fuse/sshfs); REQUIRED */
+ if (!vfs_getopts(opts, "fspath", &err))
+ return err;
+
+ /* `from' contains the device name (eg. /dev/fuse0); REQUIRED */
+ fspec = vfs_getopts(opts, "from", &err);
+ if (!fspec)
+ return err;
+
+ /* `fd' contains the filedescriptor for this session; REQUIRED */
+ if (vfs_scanopt(opts, "fd", "%d", &fd) != 1)
+ return EINVAL;
+
+ err = fuse_getdevice(fspec, td, &fdev);
+ if (err != 0)
+ return err;
+
+ /*
+ * With the help of underscored options the mount program
+ * can inform us from the flags it sets by default
+ */
+ FUSE_FLAGOPT(allow_other, FSESS_DAEMON_CAN_SPY);
+ FUSE_FLAGOPT(push_symlinks_in, FSESS_PUSH_SYMLINKS_IN);
+ FUSE_FLAGOPT(default_permissions, FSESS_DEFAULT_PERMISSIONS);
+ FUSE_FLAGOPT(no_attrcache, FSESS_NO_ATTRCACHE);
+ FUSE_FLAGOPT(no_readahed, FSESS_NO_READAHEAD);
+ FUSE_FLAGOPT(no_datacache, FSESS_NO_DATACACHE);
+ FUSE_FLAGOPT(no_namecache, FSESS_NO_NAMECACHE);
+ FUSE_FLAGOPT(no_mmap, FSESS_NO_MMAP);
+ FUSE_FLAGOPT(brokenio, FSESS_BROKENIO);
+
+ if (vfs_scanopt(opts, "max_read=", "%u", &max_read) == 1)
+ max_read_set = 1;
+ if (vfs_scanopt(opts, "timeout=", "%u", &daemon_timeout) == 1) {
+ if (daemon_timeout < FUSE_MIN_DAEMON_TIMEOUT)
+ daemon_timeout = FUSE_MIN_DAEMON_TIMEOUT;
+ else if (daemon_timeout > FUSE_MAX_DAEMON_TIMEOUT)
+ daemon_timeout = FUSE_MAX_DAEMON_TIMEOUT;
+ } else {
+ daemon_timeout = FUSE_DEFAULT_DAEMON_TIMEOUT;
+ }
+ subtype = vfs_getopts(opts, "subtype=", &err);
+
+ DEBUG2G("mntopts 0x%jx\n", (uintmax_t)mntopts);
+
+ err = fget(td, fd, CAP_READ, &fp);
+ if (err != 0) {
+ DEBUG("invalid or not opened device: data=%p\n", data);
+ goto out;
+ }
+ fptmp = td->td_fpop;
+ td->td_fpop = fp;
+ err = devfs_get_cdevpriv((void **)&data);
+ td->td_fpop = fptmp;
+ fdrop(fp, td);
+ FUSE_LOCK();
+ if (err != 0 || data == NULL || data->mp != NULL) {
+ DEBUG("invalid or not opened device: data=%p data.mp=%p\n",
+ data, data != NULL ? data->mp : NULL);
+ err = ENXIO;
+ FUSE_UNLOCK();
+ goto out;
+ }
+ if (fdata_get_dead(data)) {
+ DEBUG("device is dead during mount: data=%p\n", data);
+ err = ENOTCONN;
+ FUSE_UNLOCK();
+ goto out;
+ }
+ /* Sanity + permission checks */
+ if (!data->daemoncred)
+ panic("fuse daemon found, but identity unknown");
+ if (mntopts & FSESS_DAEMON_CAN_SPY)
+ err = priv_check(td, PRIV_VFS_FUSE_ALLOWOTHER);
+ if (err == 0 && td->td_ucred->cr_uid != data->daemoncred->cr_uid)
+ /* are we allowed to do the first mount? */
+ err = priv_check(td, PRIV_VFS_FUSE_MOUNT_NONUSER);
+ if (err) {
+ FUSE_UNLOCK();
+ goto out;
+ }
+ /* We need this here as this slot is used by getnewvnode() */
+ mp->mnt_stat.f_iosize = PAGE_SIZE;
+ mp->mnt_data = data;
+ data->ref++;
+ data->mp = mp;
+ data->dataflags |= mntopts;
+ data->max_read = max_read;
+ data->daemon_timeout = daemon_timeout;
+#ifdef XXXIP
+ if (!priv_check(td, PRIV_VFS_FUSE_SYNC_UNMOUNT))
+ data->dataflags |= FSESS_CAN_SYNC_UNMOUNT;
+#endif
+ FUSE_UNLOCK();
+
+ vfs_getnewfsid(mp);
+ mp->mnt_flag |= MNT_LOCAL;
+ mp->mnt_kern_flag |= MNTK_MPSAFE;
+ if (subtype) {
+ strlcat(mp->mnt_stat.f_fstypename, ".", MFSNAMELEN);
+ strlcat(mp->mnt_stat.f_fstypename, subtype, MFSNAMELEN);
+ }
+ copystr(fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &len);
+ bzero(mp->mnt_stat.f_mntfromname + len, MNAMELEN - len);
+ DEBUG2G("mp %p: %s\n", mp, mp->mnt_stat.f_mntfromname);
+
+ /* Now handshaking with daemon */
+ fuse_internal_send_init(data, td);
+
+out:
+ if (err) {
+ FUSE_LOCK();
+ if (data->mp == mp) {
+ /*
+ * Destroy device only if we acquired reference to
+ * it
+ */
+ DEBUG("mount failed, destroy device: data=%p mp=%p"
+ " err=%d\n",
+ data, mp, err);
+ data->mp = NULL;
+ fdata_trydestroy(data);
+ }
+ FUSE_UNLOCK();
+ dev_rel(fdev);
+ }
+ return err;
+}
+
+static int
+fuse_vfsop_unmount(struct mount *mp, int mntflags)
+{
+ int err = 0;
+ int flags = 0;
+
+ struct cdev *fdev;
+ struct fuse_data *data;
+ struct fuse_dispatcher fdi;
+ struct thread *td = curthread;
+
+ fuse_trace_printf_vfsop();
+
+ if (mntflags & MNT_FORCE) {
+ flags |= FORCECLOSE;
+ }
+ data = fuse_get_mpdata(mp);
+ if (!data) {
+ panic("no private data for mount point?");
+ }
+ /* There is 1 extra root vnode reference (mp->mnt_data). */
+ FUSE_LOCK();
+ if (data->vroot != NULL) {
+ struct vnode *vroot = data->vroot;
+
+ data->vroot = NULL;
+ FUSE_UNLOCK();
+ vrele(vroot);
+ } else
+ FUSE_UNLOCK();
+ err = vflush(mp, 0, flags, td);
+ if (err) {
+ debug_printf("vflush failed");
+ return err;
+ }
+ if (fdata_get_dead(data)) {
+ goto alreadydead;
+ }
+ fdisp_init(&fdi, 0);
+ fdisp_make(&fdi, FUSE_DESTROY, mp, 0, td, NULL);
+
+ err = fdisp_wait_answ(&fdi);
+ fdisp_destroy(&fdi);
+
+ fdata_set_dead(data);
+
+alreadydead:
+ FUSE_LOCK();
+ data->mp = NULL;
+ fdev = data->fdev;
+ fdata_trydestroy(data);
+ FUSE_UNLOCK();
+
+ MNT_ILOCK(mp);
+ mp->mnt_data = NULL;
+ mp->mnt_flag &= ~MNT_LOCAL;
+ MNT_IUNLOCK(mp);
+
+ dev_rel(fdev);
+
+ return 0;
+}
+
+static int
+fuse_vfsop_root(struct mount *mp, int lkflags, struct vnode **vpp)
+{
+ struct fuse_data *data = fuse_get_mpdata(mp);
+ int err = 0;
+
+ if (data->vroot != NULL) {
+ err = vget(data->vroot, lkflags, curthread);
+ if (err == 0)
+ *vpp = data->vroot;
+ } else {
+ err = fuse_vnode_get(mp, FUSE_ROOT_ID, NULL, vpp, NULL, VDIR);
+ if (err == 0) {
+ FUSE_LOCK();
+ MPASS(data->vroot == NULL || data->vroot == *vpp);
+ if (data->vroot == NULL) {
+ DEBUG("new root vnode\n");
+ data->vroot = *vpp;
+ FUSE_UNLOCK();
+ vref(*vpp);
+ } else if (data->vroot != *vpp) {
+ DEBUG("root vnode race\n");
+ FUSE_UNLOCK();
+ VOP_UNLOCK(*vpp, 0);
+ vrele(*vpp);
+ vrecycle(*vpp);
+ *vpp = data->vroot;
+ } else
+ FUSE_UNLOCK();
+ }
+ }
+ return err;
+}
+
+static int
+fuse_vfsop_statfs(struct mount *mp, struct statfs *sbp)
+{
+ struct fuse_dispatcher fdi;
+ int err = 0;
+
+ struct fuse_statfs_out *fsfo;
+ struct fuse_data *data;
+
+ DEBUG2G("mp %p: %s\n", mp, mp->mnt_stat.f_mntfromname);
+ data = fuse_get_mpdata(mp);
+
+ if (!(data->dataflags & FSESS_INITED))
+ goto fake;
+
+ fdisp_init(&fdi, 0);
+ fdisp_make(&fdi, FUSE_STATFS, mp, FUSE_ROOT_ID, NULL, NULL);
+ err = fdisp_wait_answ(&fdi);
+ if (err) {
+ fdisp_destroy(&fdi);
+ if (err == ENOTCONN) {
+ /*
+ * We want to seem a legitimate fs even if the daemon
+ * is stiff dead... (so that, eg., we can still do path
+ * based unmounting after the daemon dies).
+ */
+ goto fake;
+ }
+ return err;
+ }
+ fsfo = fdi.answ;
+
+ sbp->f_blocks = fsfo->st.blocks;
+ sbp->f_bfree = fsfo->st.bfree;
+ sbp->f_bavail = fsfo->st.bavail;
+ sbp->f_files = fsfo->st.files;
+ sbp->f_ffree = fsfo->st.ffree; /* cast from uint64_t to int64_t */
+ sbp->f_namemax = fsfo->st.namelen;
+ sbp->f_bsize = fsfo->st.frsize; /* cast from uint32_t to uint64_t */
+
+ DEBUG("fuse_statfs_out -- blocks: %llu, bfree: %llu, bavail: %llu, "
+ "fil es: %llu, ffree: %llu, bsize: %i, namelen: %i\n",
+ (unsigned long long)fsfo->st.blocks,
+ (unsigned long long)fsfo->st.bfree,
+ (unsigned long long)fsfo->st.bavail,
+ (unsigned long long)fsfo->st.files,
+ (unsigned long long)fsfo->st.ffree, fsfo->st.bsize,
+ fsfo->st.namelen);
+
+ fdisp_destroy(&fdi);
+ return 0;
+
+fake:
+ sbp->f_blocks = 0;
+ sbp->f_bfree = 0;
+ sbp->f_bavail = 0;
+ sbp->f_files = 0;
+ sbp->f_ffree = 0;
+ sbp->f_namemax = 0;
+ sbp->f_bsize = FUSE_DEFAULT_BLOCKSIZE;
+
+ return 0;
+}
diff --git a/sys/fs/fuse/fuse_vnops.c b/sys/fs/fuse/fuse_vnops.c
new file mode 100644
index 0000000..172210f
--- /dev/null
+++ b/sys/fs/fuse/fuse_vnops.c
@@ -0,0 +1,2037 @@
+/*
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Copyright (C) 2005 Csaba Henk.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/sx.h>
+#include <sys/proc.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/namei.h>
+#include <sys/stat.h>
+#include <sys/unistd.h>
+#include <sys/filedesc.h>
+#include <sys/file.h>
+#include <sys/fcntl.h>
+#include <sys/dirent.h>
+#include <sys/bio.h>
+#include <sys/buf.h>
+#include <sys/sysctl.h>
+
+#include <vm/vm.h>
+#include <vm/vm_extern.h>
+#include <vm/pmap.h>
+#include <vm/vm_map.h>
+#include <vm/vm_page.h>
+#include <vm/vm_param.h>
+#include <vm/vm_object.h>
+#include <vm/vm_pager.h>
+#include <vm/vnode_pager.h>
+#include <vm/vm_object.h>
+
+#include "fuse.h"
+#include "fuse_file.h"
+#include "fuse_internal.h"
+#include "fuse_ipc.h"
+#include "fuse_node.h"
+#include "fuse_param.h"
+#include "fuse_io.h"
+
+#include <sys/priv.h>
+
+#define FUSE_DEBUG_MODULE VNOPS
+#include "fuse_debug.h"
+
+/* vnode ops */
+static vop_access_t fuse_vnop_access;
+static vop_close_t fuse_vnop_close;
+static vop_create_t fuse_vnop_create;
+static vop_fsync_t fuse_vnop_fsync;
+static vop_getattr_t fuse_vnop_getattr;
+static vop_inactive_t fuse_vnop_inactive;
+static vop_link_t fuse_vnop_link;
+static vop_lookup_t fuse_vnop_lookup;
+static vop_mkdir_t fuse_vnop_mkdir;
+static vop_mknod_t fuse_vnop_mknod;
+static vop_open_t fuse_vnop_open;
+static vop_read_t fuse_vnop_read;
+static vop_readdir_t fuse_vnop_readdir;
+static vop_readlink_t fuse_vnop_readlink;
+static vop_reclaim_t fuse_vnop_reclaim;
+static vop_remove_t fuse_vnop_remove;
+static vop_rename_t fuse_vnop_rename;
+static vop_rmdir_t fuse_vnop_rmdir;
+static vop_setattr_t fuse_vnop_setattr;
+static vop_strategy_t fuse_vnop_strategy;
+static vop_symlink_t fuse_vnop_symlink;
+static vop_write_t fuse_vnop_write;
+static vop_getpages_t fuse_vnop_getpages;
+static vop_putpages_t fuse_vnop_putpages;
+static vop_print_t fuse_vnop_print;
+
+struct vop_vector fuse_vnops = {
+ .vop_default = &default_vnodeops,
+ .vop_access = fuse_vnop_access,
+ .vop_close = fuse_vnop_close,
+ .vop_create = fuse_vnop_create,
+ .vop_fsync = fuse_vnop_fsync,
+ .vop_getattr = fuse_vnop_getattr,
+ .vop_inactive = fuse_vnop_inactive,
+ .vop_link = fuse_vnop_link,
+ .vop_lookup = fuse_vnop_lookup,
+ .vop_mkdir = fuse_vnop_mkdir,
+ .vop_mknod = fuse_vnop_mknod,
+ .vop_open = fuse_vnop_open,
+ .vop_pathconf = vop_stdpathconf,
+ .vop_read = fuse_vnop_read,
+ .vop_readdir = fuse_vnop_readdir,
+ .vop_readlink = fuse_vnop_readlink,
+ .vop_reclaim = fuse_vnop_reclaim,
+ .vop_remove = fuse_vnop_remove,
+ .vop_rename = fuse_vnop_rename,
+ .vop_rmdir = fuse_vnop_rmdir,
+ .vop_setattr = fuse_vnop_setattr,
+ .vop_strategy = fuse_vnop_strategy,
+ .vop_symlink = fuse_vnop_symlink,
+ .vop_write = fuse_vnop_write,
+ .vop_getpages = fuse_vnop_getpages,
+ .vop_putpages = fuse_vnop_putpages,
+ .vop_print = fuse_vnop_print,
+};
+
+static u_long fuse_lookup_cache_hits = 0;
+
+SYSCTL_ULONG(_vfs_fuse, OID_AUTO, lookup_cache_hits, CTLFLAG_RD,
+ &fuse_lookup_cache_hits, 0, "");
+
+static u_long fuse_lookup_cache_misses = 0;
+
+SYSCTL_ULONG(_vfs_fuse, OID_AUTO, lookup_cache_misses, CTLFLAG_RD,
+ &fuse_lookup_cache_misses, 0, "");
+
+int fuse_lookup_cache_enable = 1;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, lookup_cache_enable, CTLFLAG_RW,
+ &fuse_lookup_cache_enable, 0, "");
+
+/*
+ * XXX: This feature is highly experimental and can bring to instabilities,
+ * needs revisiting before to be enabled by default.
+ */
+static int fuse_reclaim_revoked = 0;
+
+SYSCTL_INT(_vfs_fuse, OID_AUTO, reclaim_revoked, CTLFLAG_RW,
+ &fuse_reclaim_revoked, 0, "");
+
+int fuse_pbuf_freecnt = -1;
+
+#define fuse_vm_page_lock(m) vm_page_lock((m));
+#define fuse_vm_page_unlock(m) vm_page_unlock((m));
+#define fuse_vm_page_lock_queues() ((void)0)
+#define fuse_vm_page_unlock_queues() ((void)0)
+
+/*
+ struct vnop_access_args {
+ struct vnode *a_vp;
+#if VOP_ACCESS_TAKES_ACCMODE_T
+ accmode_t a_accmode;
+#else
+ int a_mode;
+#endif
+ struct ucred *a_cred;
+ struct thread *a_td;
+ };
+*/
+static int
+fuse_vnop_access(struct vop_access_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ int accmode = ap->a_accmode;
+ struct ucred *cred = ap->a_cred;
+
+ struct fuse_access_param facp;
+ struct fuse_data *data = fuse_get_mpdata(vnode_mount(vp));
+
+ int err;
+
+ DEBUG2G("inode=%ju\n", (uintmax_t)VTOI(vp));
+
+ if (fuse_isdeadfs(vp)) {
+ if (vnode_isvroot(vp)) {
+ return 0;
+ }
+ return ENXIO;
+ }
+ if (!(data->dataflags & FSESS_INITED)) {
+ if (vnode_isvroot(vp)) {
+ if (priv_check_cred(cred, PRIV_VFS_ADMIN, 0) ||
+ (fuse_match_cred(data->daemoncred, cred) == 0)) {
+ return 0;
+ }
+ }
+ return EBADF;
+ }
+ if (vnode_islnk(vp)) {
+ return 0;
+ }
+ bzero(&facp, sizeof(facp));
+
+ err = fuse_internal_access(vp, accmode, &facp, ap->a_td, ap->a_cred);
+ DEBUG2G("err=%d accmode=0x%x\n", err, accmode);
+ return err;
+}
+
+/*
+ struct vnop_close_args {
+ struct vnode *a_vp;
+ int a_fflag;
+ struct ucred *a_cred;
+ struct thread *a_td;
+ };
+*/
+static int
+fuse_vnop_close(struct vop_close_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct ucred *cred = ap->a_cred;
+ int fflag = ap->a_fflag;
+ fufh_type_t fufh_type;
+
+ fuse_trace_printf_vnop();
+
+ if (fuse_isdeadfs(vp)) {
+ return 0;
+ }
+ if (vnode_isdir(vp)) {
+ if (fuse_filehandle_valid(vp, FUFH_RDONLY)) {
+ fuse_filehandle_close(vp, FUFH_RDONLY, NULL, cred);
+ }
+ return 0;
+ }
+ if (fflag & IO_NDELAY) {
+ return 0;
+ }
+ fufh_type = fuse_filehandle_xlate_from_fflags(fflag);
+
+ if (!fuse_filehandle_valid(vp, fufh_type)) {
+ int i;
+
+ for (i = 0; i < FUFH_MAXTYPE; i++)
+ if (fuse_filehandle_valid(vp, i))
+ break;
+ if (i == FUFH_MAXTYPE)
+ panic("FUSE: fufh type %d found to be invalid in close"
+ " (fflag=0x%x)\n",
+ fufh_type, fflag);
+ }
+ if ((VTOFUD(vp)->flag & FN_SIZECHANGE) != 0) {
+ fuse_vnode_savesize(vp, cred);
+ }
+ return 0;
+}
+
+/*
+ struct vnop_create_args {
+ struct vnode *a_dvp;
+ struct vnode **a_vpp;
+ struct componentname *a_cnp;
+ struct vattr *a_vap;
+ };
+*/
+static int
+fuse_vnop_create(struct vop_create_args *ap)
+{
+ struct vnode *dvp = ap->a_dvp;
+ struct vnode **vpp = ap->a_vpp;
+ struct componentname *cnp = ap->a_cnp;
+ struct vattr *vap = ap->a_vap;
+ struct thread *td = cnp->cn_thread;
+ struct ucred *cred = cnp->cn_cred;
+
+ struct fuse_open_in *foi;
+ struct fuse_entry_out *feo;
+ struct fuse_dispatcher fdi;
+ struct fuse_dispatcher *fdip = &fdi;
+
+ int err;
+
+ struct mount *mp = vnode_mount(dvp);
+ uint64_t parentnid = VTOFUD(dvp)->nid;
+ mode_t mode = MAKEIMODE(vap->va_type, vap->va_mode);
+ uint64_t x_fh_id;
+ uint32_t x_open_flags;
+
+ fuse_trace_printf_vnop();
+
+ if (fuse_isdeadfs(dvp)) {
+ return ENXIO;
+ }
+ bzero(&fdi, sizeof(fdi));
+
+ /* XXX: Will we ever want devices ? */
+ if ((vap->va_type != VREG)) {
+ MPASS(vap->va_type != VFIFO);
+ goto bringup;
+ }
+ debug_printf("parent nid = %ju, mode = %x\n", (uintmax_t)parentnid,
+ mode);
+
+ fdisp_init(fdip, sizeof(*foi) + cnp->cn_namelen + 1);
+ if (!fsess_isimpl(mp, FUSE_CREATE)) {
+ debug_printf("eh, daemon doesn't implement create?\n");
+ return (EINVAL);
+ }
+ fdisp_make(fdip, FUSE_CREATE, vnode_mount(dvp), parentnid, td, cred);
+
+ foi = fdip->indata;
+ foi->mode = mode;
+ foi->flags = O_CREAT | O_RDWR;
+
+ memcpy((char *)fdip->indata + sizeof(*foi), cnp->cn_nameptr,
+ cnp->cn_namelen);
+ ((char *)fdip->indata)[sizeof(*foi) + cnp->cn_namelen] = '\0';
+
+ err = fdisp_wait_answ(fdip);
+
+ if (err == ENOSYS) {
+ debug_printf("create: got ENOSYS from daemon\n");
+ fsess_set_notimpl(mp, FUSE_CREATE);
+ fdisp_destroy(fdip);
+ } else if (err) {
+ debug_printf("create: darn, got err=%d from daemon\n", err);
+ goto out;
+ }
+bringup:
+ feo = fdip->answ;
+
+ if ((err = fuse_internal_checkentry(feo, VREG))) {
+ goto out;
+ }
+ err = fuse_vnode_get(mp, feo->nodeid, dvp, vpp, cnp, VREG);
+ if (err) {
+ struct fuse_release_in *fri;
+ uint64_t nodeid = feo->nodeid;
+ uint64_t fh_id = ((struct fuse_open_out *)(feo + 1))->fh;
+
+ fdisp_init(fdip, sizeof(*fri));
+ fdisp_make(fdip, FUSE_RELEASE, mp, nodeid, td, cred);
+ fri = fdip->indata;
+ fri->fh = fh_id;
+ fri->flags = OFLAGS(mode);
+ fuse_insert_callback(fdip->tick, fuse_internal_forget_callback);
+ fuse_insert_message(fdip->tick);
+ return err;
+ }
+ ASSERT_VOP_ELOCKED(*vpp, "fuse_vnop_create");
+
+ fdip->answ = feo + 1;
+
+ x_fh_id = ((struct fuse_open_out *)(feo + 1))->fh;
+ x_open_flags = ((struct fuse_open_out *)(feo + 1))->open_flags;
+ fuse_filehandle_init(*vpp, FUFH_RDWR, NULL, x_fh_id);
+ fuse_vnode_open(*vpp, x_open_flags, td);
+ cache_purge_negative(dvp);
+
+out:
+ fdisp_destroy(fdip);
+ return err;
+}
+
+/*
+ * Our vnop_fsync roughly corresponds to the FUSE_FSYNC method. The Linux
+ * version of FUSE also has a FUSE_FLUSH method.
+ *
+ * On Linux, fsync() synchronizes a file's complete in-core state with that
+ * on disk. The call is not supposed to return until the system has completed
+ * that action or until an error is detected.
+ *
+ * Linux also has an fdatasync() call that is similar to fsync() but is not
+ * required to update the metadata such as access time and modification time.
+ */
+
+/*
+ struct vnop_fsync_args {
+ struct vnodeop_desc *a_desc;
+ struct vnode * a_vp;
+ struct ucred * a_cred;
+ int a_waitfor;
+ struct thread * a_td;
+ };
+*/
+static int
+fuse_vnop_fsync(struct vop_fsync_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct thread *td = ap->a_td;
+
+ struct fuse_filehandle *fufh;
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+
+ int type, err = 0;
+
+ fuse_trace_printf_vnop();
+
+ if (fuse_isdeadfs(vp)) {
+ return 0;
+ }
+ if ((err = vop_stdfsync(ap)))
+ return err;
+
+ if (!fsess_isimpl(vnode_mount(vp),
+ (vnode_vtype(vp) == VDIR ? FUSE_FSYNCDIR : FUSE_FSYNC))) {
+ goto out;
+ }
+ for (type = 0; type < FUFH_MAXTYPE; type++) {
+ fufh = &(fvdat->fufh[type]);
+ if (FUFH_IS_VALID(fufh)) {
+ fuse_internal_fsync(vp, td, NULL, fufh);
+ }
+ }
+
+out:
+ return 0;
+}
+
+/*
+ struct vnop_getattr_args {
+ struct vnode *a_vp;
+ struct vattr *a_vap;
+ struct ucred *a_cred;
+ struct thread *a_td;
+ };
+*/
+static int
+fuse_vnop_getattr(struct vop_getattr_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct vattr *vap = ap->a_vap;
+ struct ucred *cred = ap->a_cred;
+ struct thread *td = curthread;
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+
+ int err = 0;
+ int dataflags;
+ struct fuse_dispatcher fdi;
+
+ DEBUG2G("inode=%ju\n", (uintmax_t)VTOI(vp));
+
+ dataflags = fuse_get_mpdata(vnode_mount(vp))->dataflags;
+
+ /* Note that we are not bailing out on a dead file system just yet. */
+
+ /* look for cached attributes */
+ if (fuse_isvalid_attr(vp)) {
+ if (vap != VTOVA(vp)) {
+ memcpy(vap, VTOVA(vp), sizeof(*vap));
+ }
+ if ((fvdat->flag & FN_SIZECHANGE) != 0) {
+ vap->va_size = fvdat->filesize;
+ }
+ debug_printf("return cached: inode=%ju\n", (uintmax_t)VTOI(vp));
+ return 0;
+ }
+ if (!(dataflags & FSESS_INITED)) {
+ if (!vnode_isvroot(vp)) {
+ fdata_set_dead(fuse_get_mpdata(vnode_mount(vp)));
+ err = ENOTCONN;
+ debug_printf("fuse_getattr b: returning ENOTCONN\n");
+ return err;
+ } else {
+ goto fake;
+ }
+ }
+ fdisp_init(&fdi, 0);
+ if ((err = fdisp_simple_putget_vp(&fdi, FUSE_GETATTR, vp, td, cred))) {
+ if ((err == ENOTCONN) && vnode_isvroot(vp)) {
+ /* see comment at similar place in fuse_statfs() */
+ fdisp_destroy(&fdi);
+ goto fake;
+ }
+ if (err == ENOENT) {
+ fuse_internal_vnode_disappear(vp);
+ }
+ goto out;
+ }
+ cache_attrs(vp, (struct fuse_attr_out *)fdi.answ);
+ if (vap != VTOVA(vp)) {
+ memcpy(vap, VTOVA(vp), sizeof(*vap));
+ }
+ if ((fvdat->flag & FN_SIZECHANGE) != 0)
+ vap->va_size = fvdat->filesize;
+
+ if (vnode_isreg(vp) && (fvdat->flag & FN_SIZECHANGE) == 0) {
+ /*
+ * This is for those cases when the file size changed without us
+ * knowing, and we want to catch up.
+ */
+ off_t new_filesize = ((struct fuse_attr_out *)
+ fdi.answ)->attr.size;
+
+ if (fvdat->filesize != new_filesize) {
+ fuse_vnode_setsize(vp, cred, new_filesize);
+ }
+ }
+ KASSERT(vnode_vtype(vp) == vap->va_type, ("stale vnode"));
+ debug_printf("fuse_getattr e: returning 0\n");
+
+out:
+ fdisp_destroy(&fdi);
+ return err;
+
+fake:
+ bzero(vap, sizeof(*vap));
+ vap->va_type = vnode_vtype(vp);
+
+ return 0;
+}
+
+/*
+ struct vnop_inactive_args {
+ struct vnode *a_vp;
+ struct thread *a_td;
+ };
+*/
+static int
+fuse_vnop_inactive(struct vop_inactive_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct thread *td = ap->a_td;
+
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct fuse_filehandle *fufh = NULL;
+
+ int type, need_flush = 1;
+
+ DEBUG("inode=%ju\n", (uintmax_t)VTOI(vp));
+
+ for (type = 0; type < FUFH_MAXTYPE; type++) {
+ fufh = &(fvdat->fufh[type]);
+ if (FUFH_IS_VALID(fufh)) {
+ if (need_flush && vp->v_type == VREG) {
+ if ((VTOFUD(vp)->flag & FN_SIZECHANGE) != 0) {
+ fuse_vnode_savesize(vp, NULL);
+ }
+ if (fuse_data_cache_invalidate ||
+ (fvdat->flag & FN_REVOKED) != 0)
+ fuse_io_invalbuf(vp, td);
+ else
+ fuse_io_flushbuf(vp, MNT_WAIT, td);
+ need_flush = 0;
+ }
+ fuse_filehandle_close(vp, type, td, NULL);
+ }
+ }
+
+ if ((fvdat->flag & FN_REVOKED) != 0 && fuse_reclaim_revoked) {
+ vrecycle(vp);
+ }
+ return 0;
+}
+
+/*
+ struct vnop_link_args {
+ struct vnode *a_tdvp;
+ struct vnode *a_vp;
+ struct componentname *a_cnp;
+ };
+*/
+static int
+fuse_vnop_link(struct vop_link_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct vnode *tdvp = ap->a_tdvp;
+ struct componentname *cnp = ap->a_cnp;
+
+ struct vattr *vap = VTOVA(vp);
+
+ struct fuse_dispatcher fdi;
+ struct fuse_entry_out *feo;
+ struct fuse_link_in fli;
+
+ int err;
+
+ fuse_trace_printf_vnop();
+
+ if (fuse_isdeadfs(vp)) {
+ return ENXIO;
+ }
+ if (vnode_mount(tdvp) != vnode_mount(vp)) {
+ return EXDEV;
+ }
+ if (vap->va_nlink >= FUSE_LINK_MAX) {
+ return EMLINK;
+ }
+ fli.oldnodeid = VTOI(vp);
+
+ fdisp_init(&fdi, 0);
+ fuse_internal_newentry_makerequest(vnode_mount(tdvp), VTOI(tdvp), cnp,
+ FUSE_LINK, &fli, sizeof(fli), &fdi);
+ if ((err = fdisp_wait_answ(&fdi))) {
+ goto out;
+ }
+ feo = fdi.answ;
+
+ err = fuse_internal_checkentry(feo, vnode_vtype(vp));
+ fuse_invalidate_attr(tdvp);
+ fuse_invalidate_attr(vp);
+
+out:
+ fdisp_destroy(&fdi);
+ return err;
+}
+
+/*
+ struct vnop_lookup_args {
+ struct vnodeop_desc *a_desc;
+ struct vnode *a_dvp;
+ struct vnode **a_vpp;
+ struct componentname *a_cnp;
+ };
+*/
+int
+fuse_vnop_lookup(struct vop_lookup_args *ap)
+{
+ struct vnode *dvp = ap->a_dvp;
+ struct vnode **vpp = ap->a_vpp;
+ struct componentname *cnp = ap->a_cnp;
+ struct thread *td = cnp->cn_thread;
+ struct ucred *cred = cnp->cn_cred;
+
+ int nameiop = cnp->cn_nameiop;
+ int flags = cnp->cn_flags;
+ int wantparent = flags & (LOCKPARENT | WANTPARENT);
+ int islastcn = flags & ISLASTCN;
+ struct mount *mp = vnode_mount(dvp);
+
+ int err = 0;
+ int lookup_err = 0;
+ struct vnode *vp = NULL;
+
+ struct fuse_dispatcher fdi;
+ enum fuse_opcode op;
+
+ uint64_t nid;
+ struct fuse_access_param facp;
+
+ DEBUG2G("parent_inode=%ju - %*s\n",
+ (uintmax_t)VTOI(dvp), (int)cnp->cn_namelen, cnp->cn_nameptr);
+
+ if (fuse_isdeadfs(dvp)) {
+ *vpp = NULL;
+ return ENXIO;
+ }
+ if (!vnode_isdir(dvp)) {
+ return ENOTDIR;
+ }
+ if (islastcn && vfs_isrdonly(mp) && (nameiop != LOOKUP)) {
+ return EROFS;
+ }
+ /*
+ * We do access check prior to doing anything else only in the case
+ * when we are at fs root (we'd like to say, "we are at the first
+ * component", but that's not exactly the same... nevermind).
+ * See further comments at further access checks.
+ */
+
+ bzero(&facp, sizeof(facp));
+ if (vnode_isvroot(dvp)) { /* early permission check hack */
+ if ((err = fuse_internal_access(dvp, VEXEC, &facp, td, cred))) {
+ return err;
+ }
+ }
+ if (flags & ISDOTDOT) {
+ nid = VTOFUD(dvp)->parent_nid;
+ if (nid == 0) {
+ return ENOENT;
+ }
+ fdisp_init(&fdi, 0);
+ op = FUSE_GETATTR;
+ goto calldaemon;
+ } else if (cnp->cn_namelen == 1 && *(cnp->cn_nameptr) == '.') {
+ nid = VTOI(dvp);
+ fdisp_init(&fdi, 0);
+ op = FUSE_GETATTR;
+ goto calldaemon;
+ } else if (fuse_lookup_cache_enable) {
+ err = cache_lookup(dvp, vpp, cnp, NULL, NULL);
+ switch (err) {
+
+ case -1: /* positive match */
+ atomic_add_acq_long(&fuse_lookup_cache_hits, 1);
+ return 0;
+
+ case 0: /* no match in cache */
+ atomic_add_acq_long(&fuse_lookup_cache_misses, 1);
+ break;
+
+ case ENOENT: /* negative match */
+ /* fall through */
+ default:
+ return err;
+ }
+ }
+ nid = VTOI(dvp);
+ fdisp_init(&fdi, cnp->cn_namelen + 1);
+ op = FUSE_LOOKUP;
+
+calldaemon:
+ fdisp_make(&fdi, op, mp, nid, td, cred);
+
+ if (op == FUSE_LOOKUP) {
+ memcpy(fdi.indata, cnp->cn_nameptr, cnp->cn_namelen);
+ ((char *)fdi.indata)[cnp->cn_namelen] = '\0';
+ }
+ lookup_err = fdisp_wait_answ(&fdi);
+
+ if ((op == FUSE_LOOKUP) && !lookup_err) { /* lookup call succeeded */
+ nid = ((struct fuse_entry_out *)fdi.answ)->nodeid;
+ if (!nid) {
+ /*
+ * zero nodeid is the same as "not found",
+ * but it's also cacheable (which we keep
+ * keep on doing not as of writing this)
+ */
+ lookup_err = ENOENT;
+ } else if (nid == FUSE_ROOT_ID) {
+ lookup_err = EINVAL;
+ }
+ }
+ if (lookup_err &&
+ (!fdi.answ_stat || lookup_err != ENOENT || op != FUSE_LOOKUP)) {
+ fdisp_destroy(&fdi);
+ return lookup_err;
+ }
+ /* lookup_err, if non-zero, must be ENOENT at this point */
+
+ if (lookup_err) {
+
+ if ((nameiop == CREATE || nameiop == RENAME) && islastcn
+ /* && directory dvp has not been removed */ ) {
+
+ if (vfs_isrdonly(mp)) {
+ err = EROFS;
+ goto out;
+ }
+#if 0 /* THINK_ABOUT_THIS */
+ if ((err = fuse_internal_access(dvp, VWRITE, cred, td, &facp))) {
+ goto out;
+ }
+#endif
+
+ /*
+ * Possibly record the position of a slot in the
+ * directory large enough for the new component name.
+ * This can be recorded in the vnode private data for
+ * dvp. Set the SAVENAME flag to hold onto the
+ * pathname for use later in VOP_CREATE or VOP_RENAME.
+ */
+ cnp->cn_flags |= SAVENAME;
+
+ err = EJUSTRETURN;
+ goto out;
+ }
+ /* Consider inserting name into cache. */
+
+ /*
+ * No we can't use negative caching, as the fs
+ * changes are out of our control.
+ * False positives' falseness turns out just as things
+ * go by, but false negatives' falseness doesn't.
+ * (and aiding the caching mechanism with extra control
+ * mechanisms comes quite close to beating the whole purpose
+ * caching...)
+ */
+#if 0
+ if ((cnp->cn_flags & MAKEENTRY) && nameiop != CREATE) {
+ DEBUG("inserting NULL into cache\n");
+ cache_enter(dvp, NULL, cnp);
+ }
+#endif
+ err = ENOENT;
+ goto out;
+
+ } else {
+
+ /* !lookup_err */
+
+ struct fuse_entry_out *feo = NULL;
+ struct fuse_attr *fattr = NULL;
+
+ if (op == FUSE_GETATTR) {
+ fattr = &((struct fuse_attr_out *)fdi.answ)->attr;
+ } else {
+ feo = (struct fuse_entry_out *)fdi.answ;
+ fattr = &(feo->attr);
+ }
+
+ /*
+ * If deleting, and at end of pathname, return parameters
+ * which can be used to remove file. If the wantparent flag
+ * isn't set, we return only the directory, otherwise we go on
+ * and lock the inode, being careful with ".".
+ */
+ if (nameiop == DELETE && islastcn) {
+ /*
+ * Check for write access on directory.
+ */
+ facp.xuid = fattr->uid;
+ facp.facc_flags |= FACCESS_STICKY;
+ err = fuse_internal_access(dvp, VWRITE, &facp, td, cred);
+ facp.facc_flags &= ~FACCESS_XQUERIES;
+
+ if (err) {
+ goto out;
+ }
+ if (nid == VTOI(dvp)) {
+ vref(dvp);
+ *vpp = dvp;
+ } else {
+ err = fuse_vnode_get(dvp->v_mount, nid, dvp,
+ &vp, cnp, IFTOVT(fattr->mode));
+ if (err)
+ goto out;
+ *vpp = vp;
+ }
+
+ /*
+ * Save the name for use in VOP_RMDIR and VOP_REMOVE
+ * later.
+ */
+ cnp->cn_flags |= SAVENAME;
+ goto out;
+
+ }
+ /*
+ * If rewriting (RENAME), return the inode and the
+ * information required to rewrite the present directory
+ * Must get inode of directory entry to verify it's a
+ * regular file, or empty directory.
+ */
+ if (nameiop == RENAME && wantparent && islastcn) {
+
+#if 0 /* THINK_ABOUT_THIS */
+ if ((err = fuse_internal_access(dvp, VWRITE, cred, td, &facp))) {
+ goto out;
+ }
+#endif
+
+ /*
+ * Check for "."
+ */
+ if (nid == VTOI(dvp)) {
+ err = EISDIR;
+ goto out;
+ }
+ err = fuse_vnode_get(vnode_mount(dvp),
+ nid,
+ dvp,
+ &vp,
+ cnp,
+ IFTOVT(fattr->mode));
+ if (err) {
+ goto out;
+ }
+ *vpp = vp;
+ /*
+ * Save the name for use in VOP_RENAME later.
+ */
+ cnp->cn_flags |= SAVENAME;
+
+ goto out;
+ }
+ if (flags & ISDOTDOT) {
+ struct mount *mp;
+ int ltype;
+
+ /*
+ * Expanded copy of vn_vget_ino() so that
+ * fuse_vnode_get() can be used.
+ */
+ mp = dvp->v_mount;
+ ltype = VOP_ISLOCKED(dvp);
+ err = vfs_busy(mp, MBF_NOWAIT);
+ if (err != 0) {
+ vfs_ref(mp);
+ VOP_UNLOCK(dvp, 0);
+ err = vfs_busy(mp, 0);
+ vn_lock(dvp, ltype | LK_RETRY);
+ vfs_rel(mp);
+ if (err)
+ goto out;
+ if ((dvp->v_iflag & VI_DOOMED) != 0) {
+ err = ENOENT;
+ vfs_unbusy(mp);
+ goto out;
+ }
+ }
+ VOP_UNLOCK(dvp, 0);
+ err = fuse_vnode_get(vnode_mount(dvp),
+ nid,
+ NULL,
+ &vp,
+ cnp,
+ IFTOVT(fattr->mode));
+ vfs_unbusy(mp);
+ vn_lock(dvp, ltype | LK_RETRY);
+ if ((dvp->v_iflag & VI_DOOMED) != 0) {
+ if (err == 0)
+ vput(vp);
+ err = ENOENT;
+ }
+ if (err)
+ goto out;
+ *vpp = vp;
+ } else if (nid == VTOI(dvp)) {
+ vref(dvp);
+ *vpp = dvp;
+ } else {
+ err = fuse_vnode_get(vnode_mount(dvp),
+ nid,
+ dvp,
+ &vp,
+ cnp,
+ IFTOVT(fattr->mode));
+ if (err) {
+ goto out;
+ }
+ fuse_vnode_setparent(vp, dvp);
+ *vpp = vp;
+ }
+
+ if (op == FUSE_GETATTR) {
+ cache_attrs(*vpp, (struct fuse_attr_out *)fdi.answ);
+ } else {
+ cache_attrs(*vpp, (struct fuse_entry_out *)fdi.answ);
+ }
+
+ /* Insert name into cache if appropriate. */
+
+ /*
+ * Nooo, caching is evil. With caching, we can't avoid stale
+ * information taking over the playground (cached info is not
+ * just positive/negative, it does have qualitative aspects,
+ * too). And a (VOP/FUSE)_GETATTR is always thrown anyway, when
+ * walking down along cached path components, and that's not
+ * any cheaper than FUSE_LOOKUP. This might change with
+ * implementing kernel side attr caching, but... In Linux,
+ * lookup results are not cached, and the daemon is bombarded
+ * with FUSE_LOOKUPS on and on. This shows that by design, the
+ * daemon is expected to handle frequent lookup queries
+ * efficiently, do its caching in userspace, and so on.
+ *
+ * So just leave the name cache alone.
+ */
+
+ /*
+ * Well, now I know, Linux caches lookups, but with a
+ * timeout... So it's the same thing as attribute caching:
+ * we can deal with it when implement timeouts.
+ */
+#if 0
+ if (cnp->cn_flags & MAKEENTRY) {
+ cache_enter(dvp, *vpp, cnp);
+ }
+#endif
+ }
+out:
+ if (!lookup_err) {
+
+ /* No lookup error; need to clean up. */
+
+ if (err) { /* Found inode; exit with no vnode. */
+ if (op == FUSE_LOOKUP) {
+ fuse_internal_forget_send(vnode_mount(dvp), td, cred,
+ nid, 1);
+ }
+ fdisp_destroy(&fdi);
+ return err;
+ } else {
+#ifndef NO_EARLY_PERM_CHECK_HACK
+ if (!islastcn) {
+ /*
+ * We have the attributes of the next item
+ * *now*, and it's a fact, and we do not
+ * have to do extra work for it (ie, beg the
+ * daemon), and it neither depends on such
+ * accidental things like attr caching. So
+ * the big idea: check credentials *now*,
+ * not at the beginning of the next call to
+ * lookup.
+ *
+ * The first item of the lookup chain (fs root)
+ * won't be checked then here, of course, as
+ * its never "the next". But go and see that
+ * the root is taken care about at the very
+ * beginning of this function.
+ *
+ * Now, given we want to do the access check
+ * this way, one might ask: so then why not
+ * do the access check just after fetching
+ * the inode and its attributes from the
+ * daemon? Why bother with producing the
+ * corresponding vnode at all if something
+ * is not OK? We know what's the deal as
+ * soon as we get those attrs... There is
+ * one bit of info though not given us by
+ * the daemon: whether his response is
+ * authorative or not... His response should
+ * be ignored if something is mounted over
+ * the dir in question. But that can be
+ * known only by having the vnode...
+ */
+ int tmpvtype = vnode_vtype(*vpp);
+
+ bzero(&facp, sizeof(facp));
+ /*the early perm check hack */
+ facp.facc_flags |= FACCESS_VA_VALID;
+
+ if ((tmpvtype != VDIR) && (tmpvtype != VLNK)) {
+ err = ENOTDIR;
+ }
+ if (!err && !vnode_mountedhere(*vpp)) {
+ err = fuse_internal_access(*vpp, VEXEC, &facp, td, cred);
+ }
+ if (err) {
+ if (tmpvtype == VLNK)
+ DEBUG("weird, permission error with a symlink?\n");
+ vput(*vpp);
+ *vpp = NULL;
+ }
+ }
+#endif
+ }
+ }
+ fdisp_destroy(&fdi);
+
+ return err;
+}
+
+/*
+ struct vnop_mkdir_args {
+ struct vnode *a_dvp;
+ struct vnode **a_vpp;
+ struct componentname *a_cnp;
+ struct vattr *a_vap;
+ };
+*/
+static int
+fuse_vnop_mkdir(struct vop_mkdir_args *ap)
+{
+ struct vnode *dvp = ap->a_dvp;
+ struct vnode **vpp = ap->a_vpp;
+ struct componentname *cnp = ap->a_cnp;
+ struct vattr *vap = ap->a_vap;
+
+ int err = 0;
+
+ struct fuse_mkdir_in fmdi;
+
+ fuse_trace_printf_vnop();
+
+ if (fuse_isdeadfs(dvp)) {
+ return ENXIO;
+ }
+ fmdi.mode = MAKEIMODE(vap->va_type, vap->va_mode);
+
+ err = fuse_internal_newentry(dvp, vpp, cnp, FUSE_MKDIR, &fmdi,
+ sizeof(fmdi), VDIR);
+
+ if (err == 0) {
+ fuse_invalidate_attr(dvp);
+ }
+ return err;
+}
+
+/*
+ struct vnop_mknod_args {
+ struct vnode *a_dvp;
+ struct vnode **a_vpp;
+ struct componentname *a_cnp;
+ struct vattr *a_vap;
+ };
+*/
+static int
+fuse_vnop_mknod(struct vop_mknod_args *ap)
+{
+
+ return (EINVAL);
+}
+
+
+/*
+ struct vnop_open_args {
+ struct vnode *a_vp;
+ int a_mode;
+ struct ucred *a_cred;
+ struct thread *a_td;
+ int a_fdidx; / struct file *a_fp;
+ };
+*/
+static int
+fuse_vnop_open(struct vop_open_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ int mode = ap->a_mode;
+ struct thread *td = ap->a_td;
+ struct ucred *cred = ap->a_cred;
+
+ fufh_type_t fufh_type;
+ struct fuse_vnode_data *fvdat;
+
+ int error, isdir = 0;
+
+ DEBUG2G("inode=%ju mode=0x%x\n", (uintmax_t)VTOI(vp), mode);
+
+ if (fuse_isdeadfs(vp)) {
+ return ENXIO;
+ }
+ fvdat = VTOFUD(vp);
+
+ if (vnode_isdir(vp)) {
+ isdir = 1;
+ }
+ if (isdir) {
+ fufh_type = FUFH_RDONLY;
+ } else {
+ fufh_type = fuse_filehandle_xlate_from_fflags(mode);
+ }
+
+ if (fuse_filehandle_valid(vp, fufh_type)) {
+ fuse_vnode_open(vp, 0, td);
+ return 0;
+ }
+ error = fuse_filehandle_open(vp, fufh_type, NULL, td, cred);
+
+ return error;
+}
+
+/*
+ struct vnop_read_args {
+ struct vnode *a_vp;
+ struct uio *a_uio;
+ int a_ioflag;
+ struct ucred *a_cred;
+ };
+*/
+static int
+fuse_vnop_read(struct vop_read_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct uio *uio = ap->a_uio;
+ int ioflag = ap->a_ioflag;
+ struct ucred *cred = ap->a_cred;
+
+ DEBUG2G("inode=%ju offset=%jd resid=%zd\n",
+ (uintmax_t)VTOI(vp), uio->uio_offset, uio->uio_resid);
+
+ if (fuse_isdeadfs(vp)) {
+ return ENXIO;
+ }
+ return fuse_io_dispatch(vp, uio, ioflag, cred);
+}
+
+/*
+ struct vnop_readdir_args {
+ struct vnode *a_vp;
+ struct uio *a_uio;
+ struct ucred *a_cred;
+ int *a_eofflag;
+ int *ncookies;
+ u_long **a_cookies;
+ };
+*/
+static int
+fuse_vnop_readdir(struct vop_readdir_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct uio *uio = ap->a_uio;
+ struct ucred *cred = ap->a_cred;
+
+ struct fuse_filehandle *fufh = NULL;
+ struct fuse_vnode_data *fvdat;
+ struct fuse_iov cookediov;
+
+ int err = 0;
+ int freefufh = 0;
+
+ DEBUG2G("inode=%ju\n", (uintmax_t)VTOI(vp));
+
+ if (fuse_isdeadfs(vp)) {
+ return ENXIO;
+ }
+ if ( /* XXXIP ((uio_iovcnt(uio) > 1)) || */
+ (uio_resid(uio) < sizeof(struct dirent))) {
+ return EINVAL;
+ }
+ fvdat = VTOFUD(vp);
+
+ if (!fuse_filehandle_valid(vp, FUFH_RDONLY)) {
+ DEBUG("calling readdir() before open()");
+ err = fuse_filehandle_open(vp, FUFH_RDONLY, &fufh, NULL, cred);
+ freefufh = 1;
+ } else {
+ err = fuse_filehandle_get(vp, FUFH_RDONLY, &fufh);
+ }
+ if (err) {
+ return (err);
+ }
+#define DIRCOOKEDSIZE FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + MAXNAMLEN + 1)
+ fiov_init(&cookediov, DIRCOOKEDSIZE);
+
+ err = fuse_internal_readdir(vp, uio, fufh, &cookediov);
+
+ fiov_teardown(&cookediov);
+ if (freefufh) {
+ fuse_filehandle_close(vp, FUFH_RDONLY, NULL, cred);
+ }
+ return err;
+}
+
+/*
+ struct vnop_readlink_args {
+ struct vnode *a_vp;
+ struct uio *a_uio;
+ struct ucred *a_cred;
+ };
+*/
+static int
+fuse_vnop_readlink(struct vop_readlink_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct uio *uio = ap->a_uio;
+ struct ucred *cred = ap->a_cred;
+
+ struct fuse_dispatcher fdi;
+ int err;
+
+ DEBUG2G("inode=%ju\n", (uintmax_t)VTOI(vp));
+
+ if (fuse_isdeadfs(vp)) {
+ return ENXIO;
+ }
+ if (!vnode_islnk(vp)) {
+ return EINVAL;
+ }
+ fdisp_init(&fdi, 0);
+ err = fdisp_simple_putget_vp(&fdi, FUSE_READLINK, vp, curthread, cred);
+ if (err) {
+ goto out;
+ }
+ if (((char *)fdi.answ)[0] == '/' &&
+ fuse_get_mpdata(vnode_mount(vp))->dataflags & FSESS_PUSH_SYMLINKS_IN) {
+ char *mpth = vnode_mount(vp)->mnt_stat.f_mntonname;
+
+ err = uiomove(mpth, strlen(mpth), uio);
+ }
+ if (!err) {
+ err = uiomove(fdi.answ, fdi.iosize, uio);
+ }
+out:
+ fdisp_destroy(&fdi);
+ return err;
+}
+
+/*
+ struct vnop_reclaim_args {
+ struct vnode *a_vp;
+ struct thread *a_td;
+ };
+*/
+static int
+fuse_vnop_reclaim(struct vop_reclaim_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct thread *td = ap->a_td;
+
+ struct fuse_vnode_data *fvdat = VTOFUD(vp);
+ struct fuse_filehandle *fufh = NULL;
+
+ int type;
+
+ if (!fvdat) {
+ panic("FUSE: no vnode data during recycling");
+ }
+ DEBUG("inode=%ju\n", (uintmax_t)VTOI(vp));
+
+ for (type = 0; type < FUFH_MAXTYPE; type++) {
+ fufh = &(fvdat->fufh[type]);
+ if (FUFH_IS_VALID(fufh)) {
+ printf("FUSE: vnode being reclaimed but fufh (type=%d) is valid",
+ type);
+ fuse_filehandle_close(vp, type, td, NULL);
+ }
+ }
+
+ if ((!fuse_isdeadfs(vp)) && (fvdat->nlookup)) {
+ fuse_internal_forget_send(vnode_mount(vp), td, NULL, VTOI(vp),
+ fvdat->nlookup);
+ }
+ fuse_vnode_setparent(vp, NULL);
+ cache_purge(vp);
+ vfs_hash_remove(vp);
+ vnode_destroy_vobject(vp);
+ fuse_vnode_destroy(vp);
+
+ return 0;
+}
+
+/*
+ struct vnop_remove_args {
+ struct vnode *a_dvp;
+ struct vnode *a_vp;
+ struct componentname *a_cnp;
+ };
+*/
+static int
+fuse_vnop_remove(struct vop_remove_args *ap)
+{
+ struct vnode *dvp = ap->a_dvp;
+ struct vnode *vp = ap->a_vp;
+ struct componentname *cnp = ap->a_cnp;
+
+ int err;
+
+ DEBUG2G("inode=%ju name=%*s\n",
+ (uintmax_t)VTOI(vp), (int)cnp->cn_namelen, cnp->cn_nameptr);
+
+ if (fuse_isdeadfs(vp)) {
+ return ENXIO;
+ }
+ if (vnode_isdir(vp)) {
+ return EPERM;
+ }
+ cache_purge(vp);
+
+ err = fuse_internal_remove(dvp, vp, cnp, FUSE_UNLINK);
+
+ if (err == 0) {
+ fuse_internal_vnode_disappear(vp);
+ fuse_invalidate_attr(dvp);
+ }
+ return err;
+}
+
+/*
+ struct vnop_rename_args {
+ struct vnode *a_fdvp;
+ struct vnode *a_fvp;
+ struct componentname *a_fcnp;
+ struct vnode *a_tdvp;
+ struct vnode *a_tvp;
+ struct componentname *a_tcnp;
+ };
+*/
+static int
+fuse_vnop_rename(struct vop_rename_args *ap)
+{
+ struct vnode *fdvp = ap->a_fdvp;
+ struct vnode *fvp = ap->a_fvp;
+ struct componentname *fcnp = ap->a_fcnp;
+ struct vnode *tdvp = ap->a_tdvp;
+ struct vnode *tvp = ap->a_tvp;
+ struct componentname *tcnp = ap->a_tcnp;
+ struct fuse_data *data;
+
+ int err = 0;
+
+ DEBUG2G("from: inode=%ju name=%*s -> to: inode=%ju name=%*s\n",
+ (uintmax_t)VTOI(fvp), (int)fcnp->cn_namelen, fcnp->cn_nameptr,
+ (uintmax_t)(tvp == NULL ? -1 : VTOI(tvp)),
+ (int)tcnp->cn_namelen, tcnp->cn_nameptr);
+
+ if (fuse_isdeadfs(fdvp)) {
+ return ENXIO;
+ }
+ if (fvp->v_mount != tdvp->v_mount ||
+ (tvp && fvp->v_mount != tvp->v_mount)) {
+ DEBUG("cross-device rename: %s -> %s\n",
+ fcnp->cn_nameptr, (tcnp != NULL ? tcnp->cn_nameptr : "(NULL)"));
+ err = EXDEV;
+ goto out;
+ }
+ cache_purge(fvp);
+
+ /*
+ * FUSE library is expected to check if target directory is not
+ * under the source directory in the file system tree.
+ * Linux performs this check at VFS level.
+ */
+ data = fuse_get_mpdata(vnode_mount(tdvp));
+ sx_xlock(&data->rename_lock);
+ err = fuse_internal_rename(fdvp, fcnp, tdvp, tcnp);
+ if (err == 0) {
+ fuse_invalidate_attr(fdvp);
+ if (tdvp != fdvp) {
+ fuse_vnode_setparent(fvp, tdvp);
+ fuse_invalidate_attr(tdvp);
+ }
+ if (tvp != NULL)
+ fuse_vnode_setparent(tvp, NULL);
+ }
+ sx_unlock(&data->rename_lock);
+
+ if (tvp != NULL && tvp != fvp) {
+ cache_purge(tvp);
+ }
+ if (vnode_isdir(fvp)) {
+ if ((tvp != NULL) && vnode_isdir(tvp)) {
+ cache_purge(tdvp);
+ }
+ cache_purge(fdvp);
+ }
+out:
+ if (tdvp == tvp) {
+ vrele(tdvp);
+ } else {
+ vput(tdvp);
+ }
+ if (tvp != NULL) {
+ vput(tvp);
+ }
+ vrele(fdvp);
+ vrele(fvp);
+
+ return err;
+}
+
+/*
+ struct vnop_rmdir_args {
+ struct vnode *a_dvp;
+ struct vnode *a_vp;
+ struct componentname *a_cnp;
+ } *ap;
+*/
+static int
+fuse_vnop_rmdir(struct vop_rmdir_args *ap)
+{
+ struct vnode *dvp = ap->a_dvp;
+ struct vnode *vp = ap->a_vp;
+
+ int err;
+
+ DEBUG2G("inode=%ju\n", (uintmax_t)VTOI(vp));
+
+ if (fuse_isdeadfs(vp)) {
+ return ENXIO;
+ }
+ if (VTOFUD(vp) == VTOFUD(dvp)) {
+ return EINVAL;
+ }
+ err = fuse_internal_remove(dvp, vp, ap->a_cnp, FUSE_RMDIR);
+
+ if (err == 0) {
+ fuse_internal_vnode_disappear(vp);
+ fuse_invalidate_attr(dvp);
+ }
+ return err;
+}
+
+/*
+ struct vnop_setattr_args {
+ struct vnode *a_vp;
+ struct vattr *a_vap;
+ struct ucred *a_cred;
+ struct thread *a_td;
+ };
+*/
+static int
+fuse_vnop_setattr(struct vop_setattr_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct vattr *vap = ap->a_vap;
+ struct ucred *cred = ap->a_cred;
+ struct thread *td = curthread;
+
+ struct fuse_dispatcher fdi;
+ struct fuse_setattr_in *fsai;
+ struct fuse_access_param facp;
+
+ int err = 0;
+ enum vtype vtyp;
+ int sizechanged = 0;
+ uint64_t newsize = 0;
+
+ DEBUG2G("inode=%ju\n", (uintmax_t)VTOI(vp));
+
+ if (fuse_isdeadfs(vp)) {
+ return ENXIO;
+ }
+ fdisp_init(&fdi, sizeof(*fsai));
+ fdisp_make_vp(&fdi, FUSE_SETATTR, vp, td, cred);
+ fsai = fdi.indata;
+ fsai->valid = 0;
+
+ bzero(&facp, sizeof(facp));
+
+ facp.xuid = vap->va_uid;
+ facp.xgid = vap->va_gid;
+
+ if (vap->va_uid != (uid_t)VNOVAL) {
+ facp.facc_flags |= FACCESS_CHOWN;
+ fsai->uid = vap->va_uid;
+ fsai->valid |= FATTR_UID;
+ }
+ if (vap->va_gid != (gid_t)VNOVAL) {
+ facp.facc_flags |= FACCESS_CHOWN;
+ fsai->gid = vap->va_gid;
+ fsai->valid |= FATTR_GID;
+ }
+ if (vap->va_size != VNOVAL) {
+
+ struct fuse_filehandle *fufh = NULL;
+
+ /*Truncate to a new value. */
+ fsai->size = vap->va_size;
+ sizechanged = 1;
+ newsize = vap->va_size;
+ fsai->valid |= FATTR_SIZE;
+
+ fuse_filehandle_getrw(vp, FUFH_WRONLY, &fufh);
+ if (fufh) {
+ fsai->fh = fufh->fh_id;
+ fsai->valid |= FATTR_FH;
+ }
+ }
+ if (vap->va_atime.tv_sec != VNOVAL) {
+ fsai->atime = vap->va_atime.tv_sec;
+ fsai->atimensec = vap->va_atime.tv_nsec;
+ fsai->valid |= FATTR_ATIME;
+ }
+ if (vap->va_mtime.tv_sec != VNOVAL) {
+ fsai->mtime = vap->va_mtime.tv_sec;
+ fsai->mtimensec = vap->va_mtime.tv_nsec;
+ fsai->valid |= FATTR_MTIME;
+ }
+ if (vap->va_mode != (mode_t)VNOVAL) {
+ fsai->mode = vap->va_mode & ALLPERMS;
+ fsai->valid |= FATTR_MODE;
+ }
+ if (!fsai->valid) {
+ goto out;
+ }
+ vtyp = vnode_vtype(vp);
+
+ if (fsai->valid & FATTR_SIZE && vtyp == VDIR) {
+ err = EISDIR;
+ goto out;
+ }
+ if (vfs_isrdonly(vnode_mount(vp)) && (fsai->valid & ~FATTR_SIZE || vtyp == VREG)) {
+ err = EROFS;
+ goto out;
+ }
+ if (fsai->valid & ~FATTR_SIZE) {
+ /*err = fuse_internal_access(vp, VADMIN, context, &facp); */
+ /*XXX */
+ err = 0;
+ }
+ facp.facc_flags &= ~FACCESS_XQUERIES;
+
+ if (err && !(fsai->valid & ~(FATTR_ATIME | FATTR_MTIME)) &&
+ vap->va_vaflags & VA_UTIMES_NULL) {
+ err = fuse_internal_access(vp, VWRITE, &facp, td, cred);
+ }
+ if (err) {
+ fuse_invalidate_attr(vp);
+ goto out;
+ }
+ if ((err = fdisp_wait_answ(&fdi))) {
+ fuse_invalidate_attr(vp);
+ goto out;
+ }
+ vtyp = IFTOVT(((struct fuse_attr_out *)fdi.answ)->attr.mode);
+
+ if (vnode_vtype(vp) != vtyp) {
+ if (vnode_vtype(vp) == VNON && vtyp != VNON) {
+ debug_printf("FUSE: Dang! vnode_vtype is VNON and vtype isn't.\n");
+ } else {
+ /*
+ * STALE vnode, ditch
+ *
+ * The vnode has changed its type "behind our back". There's
+ * nothing really we can do, so let us just force an internal
+ * revocation and tell the caller to try again, if interested.
+ */
+ fuse_internal_vnode_disappear(vp);
+ err = EAGAIN;
+ }
+ }
+ if (!err && !sizechanged) {
+ cache_attrs(vp, (struct fuse_attr_out *)fdi.answ);
+ }
+out:
+ fdisp_destroy(&fdi);
+ if (!err && sizechanged) {
+ fuse_invalidate_attr(vp);
+ fuse_vnode_setsize(vp, cred, newsize);
+ VTOFUD(vp)->flag &= ~FN_SIZECHANGE;
+ }
+ return err;
+}
+
+/*
+ struct vnop_strategy_args {
+ struct vnode *a_vp;
+ struct buf *a_bp;
+ };
+*/
+static int
+fuse_vnop_strategy(struct vop_strategy_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct buf *bp = ap->a_bp;
+
+ fuse_trace_printf_vnop();
+
+ if (!vp || fuse_isdeadfs(vp)) {
+ bp->b_ioflags |= BIO_ERROR;
+ bp->b_error = ENXIO;
+ bufdone(bp);
+ return ENXIO;
+ }
+ if (bp->b_iocmd == BIO_WRITE)
+ fuse_vnode_refreshsize(vp, NOCRED);
+
+ (void)fuse_io_strategy(vp, bp);
+
+ /*
+ * This is a dangerous function. If returns error, that might mean a
+ * panic. We prefer pretty much anything over being forced to panic
+ * by a malicious daemon (a demon?). So we just return 0 anyway. You
+ * should never mind this: this function has its own error
+ * propagation mechanism via the argument buffer, so
+ * not-that-melodramatic residents of the call chain still will be
+ * able to know what to do.
+ */
+ return 0;
+}
+
+
+/*
+ struct vnop_symlink_args {
+ struct vnode *a_dvp;
+ struct vnode **a_vpp;
+ struct componentname *a_cnp;
+ struct vattr *a_vap;
+ char *a_target;
+ };
+*/
+static int
+fuse_vnop_symlink(struct vop_symlink_args *ap)
+{
+ struct vnode *dvp = ap->a_dvp;
+ struct vnode **vpp = ap->a_vpp;
+ struct componentname *cnp = ap->a_cnp;
+ char *target = ap->a_target;
+
+ struct fuse_dispatcher fdi;
+
+ int err;
+ size_t len;
+
+ DEBUG2G("inode=%ju name=%*s\n",
+ (uintmax_t)VTOI(dvp), (int)cnp->cn_namelen, cnp->cn_nameptr);
+
+ if (fuse_isdeadfs(dvp)) {
+ return ENXIO;
+ }
+ /*
+ * Unlike the other creator type calls, here we have to create a message
+ * where the name of the new entry comes first, and the data describing
+ * the entry comes second.
+ * Hence we can't rely on our handy fuse_internal_newentry() routine,
+ * but put together the message manually and just call the core part.
+ */
+
+ len = strlen(target) + 1;
+ fdisp_init(&fdi, len + cnp->cn_namelen + 1);
+ fdisp_make_vp(&fdi, FUSE_SYMLINK, dvp, curthread, NULL);
+
+ memcpy(fdi.indata, cnp->cn_nameptr, cnp->cn_namelen);
+ ((char *)fdi.indata)[cnp->cn_namelen] = '\0';
+ memcpy((char *)fdi.indata + cnp->cn_namelen + 1, target, len);
+
+ err = fuse_internal_newentry_core(dvp, vpp, cnp, VLNK, &fdi);
+ fdisp_destroy(&fdi);
+
+ if (err == 0) {
+ fuse_invalidate_attr(dvp);
+ }
+ return err;
+}
+
+/*
+ struct vnop_write_args {
+ struct vnode *a_vp;
+ struct uio *a_uio;
+ int a_ioflag;
+ struct ucred *a_cred;
+ };
+*/
+static int
+fuse_vnop_write(struct vop_write_args *ap)
+{
+ struct vnode *vp = ap->a_vp;
+ struct uio *uio = ap->a_uio;
+ int ioflag = ap->a_ioflag;
+ struct ucred *cred = ap->a_cred;
+
+ fuse_trace_printf_vnop();
+
+ if (fuse_isdeadfs(vp)) {
+ return ENXIO;
+ }
+ fuse_vnode_refreshsize(vp, cred);
+
+ return fuse_io_dispatch(vp, uio, ioflag, cred);
+}
+
+/*
+ struct vnop_getpages_args {
+ struct vnode *a_vp;
+ vm_page_t *a_m;
+ int a_count;
+ int a_reqpage;
+ vm_ooffset_t a_offset;
+ };
+*/
+static int
+fuse_vnop_getpages(struct vop_getpages_args *ap)
+{
+ int i, error, nextoff, size, toff, count, npages;
+ struct uio uio;
+ struct iovec iov;
+ vm_offset_t kva;
+ struct buf *bp;
+ struct vnode *vp;
+ struct thread *td;
+ struct ucred *cred;
+ vm_page_t *pages;
+
+ DEBUG2G("heh\n");
+
+ vp = ap->a_vp;
+ KASSERT(vp->v_object, ("objectless vp passed to getpages"));
+ td = curthread; /* XXX */
+ cred = curthread->td_ucred; /* XXX */
+ pages = ap->a_m;
+ count = ap->a_count;
+
+ if (!fsess_opt_mmap(vnode_mount(vp))) {
+ DEBUG("called on non-cacheable vnode??\n");
+ return (VM_PAGER_ERROR);
+ }
+ npages = btoc(count);
+
+ /*
+ * If the requested page is partially valid, just return it and
+ * allow the pager to zero-out the blanks. Partially valid pages
+ * can only occur at the file EOF.
+ */
+
+ VM_OBJECT_LOCK(vp->v_object);
+ fuse_vm_page_lock_queues();
+ if (pages[ap->a_reqpage]->valid != 0) {
+ for (i = 0; i < npages; ++i) {
+ if (i != ap->a_reqpage) {
+ fuse_vm_page_lock(pages[i]);
+ vm_page_free(pages[i]);
+ fuse_vm_page_unlock(pages[i]);
+ }
+ }
+ fuse_vm_page_unlock_queues();
+ VM_OBJECT_UNLOCK(vp->v_object);
+ return 0;
+ }
+ fuse_vm_page_unlock_queues();
+ VM_OBJECT_UNLOCK(vp->v_object);
+
+ /*
+ * We use only the kva address for the buffer, but this is extremely
+ * convienient and fast.
+ */
+ bp = getpbuf(&fuse_pbuf_freecnt);
+
+ kva = (vm_offset_t)bp->b_data;
+ pmap_qenter(kva, pages, npages);
+ PCPU_INC(cnt.v_vnodein);
+ PCPU_ADD(cnt.v_vnodepgsin, npages);
+
+ iov.iov_base = (caddr_t)kva;
+ iov.iov_len = count;
+ uio.uio_iov = &iov;
+ uio.uio_iovcnt = 1;
+ uio.uio_offset = IDX_TO_OFF(pages[0]->pindex);
+ uio.uio_resid = count;
+ uio.uio_segflg = UIO_SYSSPACE;
+ uio.uio_rw = UIO_READ;
+ uio.uio_td = td;
+
+ error = fuse_io_dispatch(vp, &uio, IO_DIRECT, cred);
+ pmap_qremove(kva, npages);
+
+ relpbuf(bp, &fuse_pbuf_freecnt);
+
+ if (error && (uio.uio_resid == count)) {
+ DEBUG("error %d\n", error);
+ VM_OBJECT_LOCK(vp->v_object);
+ fuse_vm_page_lock_queues();
+ for (i = 0; i < npages; ++i) {
+ if (i != ap->a_reqpage) {
+ fuse_vm_page_lock(pages[i]);
+ vm_page_free(pages[i]);
+ fuse_vm_page_unlock(pages[i]);
+ }
+ }
+ fuse_vm_page_unlock_queues();
+ VM_OBJECT_UNLOCK(vp->v_object);
+ return VM_PAGER_ERROR;
+ }
+ /*
+ * Calculate the number of bytes read and validate only that number
+ * of bytes. Note that due to pending writes, size may be 0. This
+ * does not mean that the remaining data is invalid!
+ */
+
+ size = count - uio.uio_resid;
+ VM_OBJECT_LOCK(vp->v_object);
+ fuse_vm_page_lock_queues();
+ for (i = 0, toff = 0; i < npages; i++, toff = nextoff) {
+ vm_page_t m;
+
+ nextoff = toff + PAGE_SIZE;
+ m = pages[i];
+
+ if (nextoff <= size) {
+ /*
+ * Read operation filled an entire page
+ */
+ m->valid = VM_PAGE_BITS_ALL;
+ KASSERT(m->dirty == 0,
+ ("fuse_getpages: page %p is dirty", m));
+ } else if (size > toff) {
+ /*
+ * Read operation filled a partial page.
+ */
+ m->valid = 0;
+ vm_page_set_valid_range(m, 0, size - toff);
+ KASSERT(m->dirty == 0,
+ ("fuse_getpages: page %p is dirty", m));
+ } else {
+ /*
+ * Read operation was short. If no error occured
+ * we may have hit a zero-fill section. We simply
+ * leave valid set to 0.
+ */
+ ;
+ }
+ if (i != ap->a_reqpage) {
+ /*
+ * Whether or not to leave the page activated is up in
+ * the air, but we should put the page on a page queue
+ * somewhere (it already is in the object). Result:
+ * It appears that emperical results show that
+ * deactivating pages is best.
+ */
+
+ /*
+ * Just in case someone was asking for this page we
+ * now tell them that it is ok to use.
+ */
+ if (!error) {
+ if (m->oflags & VPO_WANTED) {
+ fuse_vm_page_lock(m);
+ vm_page_activate(m);
+ fuse_vm_page_unlock(m);
+ } else {
+ fuse_vm_page_lock(m);
+ vm_page_deactivate(m);
+ fuse_vm_page_unlock(m);
+ }
+ vm_page_wakeup(m);
+ } else {
+ fuse_vm_page_lock(m);
+ vm_page_free(m);
+ fuse_vm_page_unlock(m);
+ }
+ }
+ }
+ fuse_vm_page_unlock_queues();
+ VM_OBJECT_UNLOCK(vp->v_object);
+ return 0;
+}
+
+/*
+ struct vnop_putpages_args {
+ struct vnode *a_vp;
+ vm_page_t *a_m;
+ int a_count;
+ int a_sync;
+ int *a_rtvals;
+ vm_ooffset_t a_offset;
+ };
+*/
+static int
+fuse_vnop_putpages(struct vop_putpages_args *ap)
+{
+ struct uio uio;
+ struct iovec iov;
+ vm_offset_t kva;
+ struct buf *bp;
+ int i, error, npages, count;
+ off_t offset;
+ int *rtvals;
+ struct vnode *vp;
+ struct thread *td;
+ struct ucred *cred;
+ vm_page_t *pages;
+ vm_ooffset_t fsize;
+
+ DEBUG2G("heh\n");
+
+ vp = ap->a_vp;
+ KASSERT(vp->v_object, ("objectless vp passed to putpages"));
+ fsize = vp->v_object->un_pager.vnp.vnp_size;
+ td = curthread; /* XXX */
+ cred = curthread->td_ucred; /* XXX */
+ pages = ap->a_m;
+ count = ap->a_count;
+ rtvals = ap->a_rtvals;
+ npages = btoc(count);
+ offset = IDX_TO_OFF(pages[0]->pindex);
+
+ if (!fsess_opt_mmap(vnode_mount(vp))) {
+ DEBUG("called on non-cacheable vnode??\n");
+ }
+ for (i = 0; i < npages; i++)
+ rtvals[i] = VM_PAGER_AGAIN;
+
+ /*
+ * When putting pages, do not extend file past EOF.
+ */
+
+ if (offset + count > fsize) {
+ count = fsize - offset;
+ if (count < 0)
+ count = 0;
+ }
+ /*
+ * We use only the kva address for the buffer, but this is extremely
+ * convienient and fast.
+ */
+ bp = getpbuf(&fuse_pbuf_freecnt);
+
+ kva = (vm_offset_t)bp->b_data;
+ pmap_qenter(kva, pages, npages);
+ PCPU_INC(cnt.v_vnodeout);
+ PCPU_ADD(cnt.v_vnodepgsout, count);
+
+ iov.iov_base = (caddr_t)kva;
+ iov.iov_len = count;
+ uio.uio_iov = &iov;
+ uio.uio_iovcnt = 1;
+ uio.uio_offset = offset;
+ uio.uio_resid = count;
+ uio.uio_segflg = UIO_SYSSPACE;
+ uio.uio_rw = UIO_WRITE;
+ uio.uio_td = td;
+
+ error = fuse_io_dispatch(vp, &uio, IO_DIRECT, cred);
+
+ pmap_qremove(kva, npages);
+ relpbuf(bp, &fuse_pbuf_freecnt);
+
+ if (!error) {
+ int nwritten = round_page(count - uio.uio_resid) / PAGE_SIZE;
+
+ for (i = 0; i < nwritten; i++) {
+ rtvals[i] = VM_PAGER_OK;
+ VM_OBJECT_LOCK(pages[i]->object);
+ vm_page_undirty(pages[i]);
+ VM_OBJECT_UNLOCK(pages[i]->object);
+ }
+ }
+ return rtvals[0];
+}
+
+/*
+ struct vnop_print_args {
+ struct vnode *a_vp;
+ };
+*/
+static int
+fuse_vnop_print(struct vop_print_args *ap)
+{
+ struct fuse_vnode_data *fvdat = VTOFUD(ap->a_vp);
+
+ printf("nodeid: %ju, parent nodeid: %ju, nlookup: %ju, flag: %#x\n",
+ (uintmax_t)VTOILLU(ap->a_vp), (uintmax_t)fvdat->parent_nid,
+ (uintmax_t)fvdat->nlookup,
+ fvdat->flag);
+
+ return 0;
+}
diff --git a/sys/modules/Makefile b/sys/modules/Makefile
index d78f8de..78cd889 100644
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -111,6 +111,7 @@ SUBDIR= \
${_filemon} \
firewire \
firmware \
+ fuse \
${_fxp} \
gem \
geom \
diff --git a/sys/modules/fuse/Makefile b/sys/modules/fuse/Makefile
new file mode 100644
index 0000000..4ccc1a0
--- /dev/null
+++ b/sys/modules/fuse/Makefile
@@ -0,0 +1,10 @@
+# $FreeBSD$
+
+.PATH: ${.CURDIR}/../../fs/fuse
+
+KMOD= fuse
+SRCS= vnode_if.h \
+ fuse_node.c fuse_io.c fuse_device.c fuse_ipc.c fuse_file.c \
+ fuse_vfsops.c fuse_vnops.c fuse_internal.c fuse_main.c
+
+.include <bsd.kmod.mk>
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