Add stuff to support upcoming BMC/IPMI flashing of newer Dell machine

via the Linux tool.
     -  Add Linux shim to ipmi(4)
     -  Create a partitions file to linprocfs to make Linux fdisk see
        disks.  This file is dynamic so we can see disks come and go.
     -  Convert msdosfs to vfat in mtab since Linux uses that for
        msdosfs.
     -  In the Linux mount path convert vfat passed in to msdosfs
        so Linux mount works on FreeBSD.  Note that tasting works
        so that if da0 is a msdos file system
                /compat/linux/bin/mount /dev/da0 /mnt
        works.
     -  fix a 64it bug for l_off_t.
Grabing sh, mount, fdisk, df from Linux, creating a symlink of mtab to
/compat/linux/etc/mtab and then some careful unpacking of the Linux bmc
update tool and hacking makes it work on newer Dell boxes.  Note, probably
if you can't figure out how to do this, then you probably shouldn't be
doing it :-)

8 files changed, 200 insertions, 1 deletions

diff --git a/sys/amd64/linux32/linux.h b/sys/amd64/linux32/linux.h
index 94372d6..bdbe213 100644
--- a/sys/amd64/linux32/linux.h
+++ b/sys/amd64/linux32/linux.h
@@ -79,7 +79,7 @@ typedef l_ulong		l_ino_t;
 typedef l_int		l_key_t;
 typedef l_longlong	l_loff_t;
 typedef l_ushort	l_mode_t;
-typedef l_long		l_off_t;
+typedef l_ulong		l_off_t;
 typedef l_int		l_pid_t;
 typedef l_uint		l_size_t;
 typedef l_long		l_suseconds_t;
diff --git a/sys/compat/linprocfs/linprocfs.c b/sys/compat/linprocfs/linprocfs.c
index 5cc1f7d..52f6e94 100644
--- a/sys/compat/linprocfs/linprocfs.c
+++ b/sys/compat/linprocfs/linprocfs.c
@@ -75,6 +75,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/vmmeter.h>
 #include <sys/vnode.h>
 #include <sys/vimage.h>
+#include <sys/bus.h>
 
 #include <net/if.h>
 #include <net/route.h>
@@ -90,6 +91,9 @@ __FBSDID("$FreeBSD$");
 
 #include <machine/clock.h>
 
+#include <geom/geom.h>
+#include <geom/geom_int.h>
+
 #if defined(__i386__) || defined(__amd64__)
 #include <machine/cputypes.h>
 #include <machine/md_var.h>
@@ -359,6 +363,9 @@ linprocfs_domtab(PFS_FILL_ARGS)
 			sbuf_printf(sb, "/sys %s sysfs %s", mntto,
 			    mp->mnt_stat.f_flags & MNT_RDONLY ? "ro" : "rw");
 		} else {
+			/* For Linux msdosfs is called vfat */
+			if (strcmp(fstype, "msdosfs") == 0)
+				fstype = "vfat";
 			sbuf_printf(sb, "%s %s %s %s", mntfrom, mntto, fstype,
 			    mp->mnt_stat.f_flags & MNT_RDONLY ? "ro" : "rw");
 		}
@@ -383,6 +390,69 @@ linprocfs_domtab(PFS_FILL_ARGS)
 }
 
 /*
+ * Filler function for proc/partitions
+ *
+ */
+static int
+linprocfs_dopartitions(PFS_FILL_ARGS)
+{
+	struct g_class *cp;
+	struct g_geom *gp;
+	struct g_provider *pp;
+	struct nameidata nd;
+	const char *lep;
+	char  *dlep, *flep;
+	size_t lep_len;
+	int error;
+	int major, minor;
+
+	/* resolve symlinks etc. in the emulation tree prefix */
+	NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, linux_emul_path, td);
+	flep = NULL;
+	error = namei(&nd);
+	lep = linux_emul_path;
+	if (error == 0) {
+		if (vn_fullpath(td, nd.ni_vp, &dlep, &flep) == 0)
+			lep = dlep;
+		vrele(nd.ni_vp);
+		VFS_UNLOCK_GIANT(NDHASGIANT(&nd));
+	}
+	lep_len = strlen(lep);
+
+	g_topology_lock();
+	error = 0;
+	sbuf_printf(sb, "major minor  #blocks  name rio rmerge rsect "
+	    "ruse wio wmerge wsect wuse running use aveq\n");
+
+	LIST_FOREACH(cp, &g_classes, class) {
+		if (strcmp(cp->name, "DISK") == 0 ||
+		    strcmp(cp->name, "PART") == 0)
+			LIST_FOREACH(gp, &cp->geom, geom) {
+				LIST_FOREACH(pp, &gp->provider, provider) {
+					if (linux_driver_get_major_minor(
+					    pp->name, &major, &minor) != 0) {
+						major = 0;
+						minor = 0;
+					}
+					sbuf_printf(sb, "%d %d %lld %s "
+					    "%d %d %d %d %d "
+					     "%d %d %d %d %d %d\n",
+					     major, minor,
+					     (long long)pp->mediasize, pp->name,
+					     0, 0, 0, 0, 0,
+					     0, 0, 0, 0, 0, 0);
+				}
+			}
+	}
+	g_topology_unlock();
+
+	if (flep != NULL)
+		free(flep, M_TEMP);
+	return (error);
+}
+
+
+/*
  * Filler function for proc/stat
  */
 static int
@@ -1206,6 +1276,8 @@ linprocfs_init(PFS_INIT_ARGS)
 	    NULL, NULL, NULL, PFS_RD);
 	pfs_create_file(root, "mtab", &linprocfs_domtab,
 	    NULL, NULL, NULL, PFS_RD);
+	pfs_create_file(root, "partitions", &linprocfs_dopartitions,
+	    NULL, NULL, NULL, PFS_RD);
 	pfs_create_link(root, "self", &procfs_docurproc,
 	    NULL, NULL, NULL, 0);
 	pfs_create_file(root, "stat", &linprocfs_dostat,
diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c
index b368429..54ab6a2 100644
--- a/sys/compat/linux/linux_file.c
+++ b/sys/compat/linux/linux_file.c
@@ -1109,6 +1109,9 @@ linux_mount(struct thread *td, struct linux_mount_args *args)
 	} else if (strcmp(fstypename, "proc") == 0) {
 		strcpy(fstypename, "linprocfs");
 		fsdata = NULL;
+	} else if (strcmp(fstypename, "vfat") == 0) {
+		strcpy(fstypename, "msdosfs");
+		fsdata = NULL;
 	} else {
 		return (ENODEV);
 	}
@@ -1135,6 +1138,12 @@ linux_mount(struct thread *td, struct linux_mount_args *args)
 			"fstype", fstypename,
 			"fspath", mntonname,
 			NULL);
+	} else if (strcmp(fstypename, "msdosfs") == 0) {
+		error = kernel_vmount(fsflags,
+			"fstype", fstypename,
+			"fspath", mntonname,
+			"from", mntfromname,
+			NULL);
 	} else
 		error = EOPNOTSUPP;
 	return (error);
diff --git a/sys/conf/files.amd64 b/sys/conf/files.amd64
index 2f17a01..7a7abf2 100644
--- a/sys/conf/files.amd64
+++ b/sys/conf/files.amd64
@@ -183,6 +183,7 @@ dev/ipmi/ipmi_smbus.c		optional	ipmi smbus
 dev/ipmi/ipmi_smbios.c		optional	ipmi
 dev/ipmi/ipmi_ssif.c		optional	ipmi smbus
 dev/ipmi/ipmi_pci.c		optional	ipmi pci
+dev/ipmi/ipmi_linux.c		optional	ipmi linux_compat32
 dev/fdc/fdc.c			optional	fdc
 dev/fdc/fdc_acpi.c		optional	fdc
 dev/fdc/fdc_isa.c		optional	fdc isa
diff --git a/sys/conf/files.i386 b/sys/conf/files.i386
index 16a7078..37f6b27 100644
--- a/sys/conf/files.i386
+++ b/sys/conf/files.i386
@@ -196,6 +196,7 @@ dev/ipmi/ipmi_smbus.c		optional ipmi smbus
 dev/ipmi/ipmi_smbios.c		optional ipmi
 dev/ipmi/ipmi_ssif.c		optional ipmi smbus
 dev/ipmi/ipmi_pci.c		optional ipmi pci
+dev/ipmi/ipmi_linux.c		optional ipmi linux_compat
 dev/kbd/kbd.c			optional atkbd | sc | ukbd | usb2_input_kbd
 dev/le/if_le_isa.c		optional le isa
 dev/mem/memutil.c		optional mem
diff --git a/sys/dev/ipmi/ipmi_linux.c b/sys/dev/ipmi/ipmi_linux.c
new file mode 100644
index 0000000..fcf2bd5
--- /dev/null
+++ b/sys/dev/ipmi/ipmi_linux.c
@@ -0,0 +1,113 @@
+/*-
+ * Copyright (c) 2009 IronPort Systems Inc. <ambrisko@ironport.com>
+ * 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("$FreeBSD$");
+
+/*
+ * Linux ioctl handler for the ipmi device driver
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/file.h>
+#include <sys/proc.h>
+#ifdef __amd64__
+#include <machine/../linux32/linux.h>
+#include <machine/../linux32/linux32_proto.h>
+#else
+#include <machine/../linux/linux.h>
+#include <machine/../linux/linux_proto.h>
+#endif
+#include <compat/linux/linux_ioctl.h>
+#include <sys/ioccom.h>
+#include <sys/ipmi.h>
+
+/* There are multiple ioctl number ranges that need to be handled */
+#define IPMI_LINUX_IOCTL_MIN  0x690b
+#define IPMI_LINUX_IOCTL_MAX  0x6915
+
+/* Linux versions of ioctl's */
+#define L_IPMICTL_RECEIVE_MSG_TRUNC       _IOWR(IPMI_IOC_MAGIC, 11, struct ipmi_recv)
+#define L_IPMICTL_RECEIVE_MSG             _IOWR(IPMI_IOC_MAGIC, 12, struct ipmi_recv)
+#define L_IPMICTL_SEND_COMMAND            _IOW(IPMI_IOC_MAGIC, 13, struct ipmi_req)
+#define L_IPMICTL_REGISTER_FOR_CMD        _IOW(IPMI_IOC_MAGIC, 14, struct ipmi_cmdspec)
+#define L_IPMICTL_UNREGISTER_FOR_CMD      _IOW(IPMI_IOC_MAGIC, 15, struct ipmi_cmdspec)
+#define L_IPMICTL_SET_GETS_EVENTS_CMD     _IOW(IPMI_IOC_MAGIC, 16, int)
+#define L_IPMICTL_SET_MY_ADDRESS_CMD      _IOW(IPMI_IOC_MAGIC, 17, unsigned int)
+#define L_IPMICTL_GET_MY_ADDRESS_CMD      _IOW(IPMI_IOC_MAGIC, 18, unsigned int)
+#define L_IPMICTL_SET_MY_LUN_CMD          _IOW(IPMI_IOC_MAGIC, 19, unsigned int)
+#define L_IPMICTL_GET_MY_LUN_CMD          _IOW(IPMI_IOC_MAGIC, 20, unsigned int)
+
+static linux_ioctl_function_t ipmi_linux_ioctl;
+static struct linux_ioctl_handler ipmi_linux_handler = {ipmi_linux_ioctl,
+						       IPMI_LINUX_IOCTL_MIN,
+						       IPMI_LINUX_IOCTL_MAX};
+
+SYSINIT  (ipmi_linux_register,   SI_SUB_KLD, SI_ORDER_MIDDLE,
+	  linux_ioctl_register_handler, &ipmi_linux_handler);
+SYSUNINIT(ipmi_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
+	  linux_ioctl_unregister_handler, &ipmi_linux_handler);
+
+static int
+ipmi_linux_modevent(module_t mod, int type, void *data)
+{
+	/* Do we care about any specific load/unload actions? */
+	return (0);
+}
+
+DEV_MODULE(ipmi_linux, ipmi_linux_modevent, NULL);
+MODULE_DEPEND(ipmi_linux, linux, 1, 1, 1);
+
+static int
+ipmi_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
+{
+	struct file *fp;
+	u_long cmd;
+	int error;
+
+	if ((error = fget(td, args->fd, &fp)) != 0)
+		return (error);
+	cmd = args->cmd;
+
+	switch(cmd) {
+	case L_IPMICTL_GET_MY_ADDRESS_CMD:
+		cmd = IPMICTL_GET_MY_ADDRESS_CMD;
+		break;
+	case L_IPMICTL_GET_MY_LUN_CMD:
+		cmd = IPMICTL_GET_MY_LUN_CMD;
+		break;
+	}
+	/*
+	 * Pass the ioctl off to our standard handler.
+	 */
+	error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td));
+	fdrop(fp, td);
+	return (error);
+}
diff --git a/sys/modules/ipmi/Makefile b/sys/modules/ipmi/Makefile
index 3f45c73..7493b23 100644
--- a/sys/modules/ipmi/Makefile
+++ b/sys/modules/ipmi/Makefile
@@ -1,5 +1,7 @@
 # $FreeBSD$
 
+SUBDIR+= ipmi_linux
+
 .PATH: ${.CURDIR}/../../dev/ipmi
 
 # XXX - ipmi_smbus and ipmi_ssif depend on smbus
diff --git a/sys/modules/linprocfs/Makefile b/sys/modules/linprocfs/Makefile
index a7cb129..62af13e 100644
--- a/sys/modules/linprocfs/Makefile
+++ b/sys/modules/linprocfs/Makefile
@@ -4,6 +4,7 @@
 
 KMOD=	linprocfs
 SRCS=	vnode_if.h \
+	device_if.h bus_if.h \
 	linprocfs.c \
 	opt_compat.h \
 	opt_route.h