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authormckusick <mckusick@FreeBSD.org>2003-03-02 01:50:33 +0000
committermckusick <mckusick@FreeBSD.org>2003-03-02 01:50:33 +0000
commitaf2849b505125bd246931a01ac1ea4b3c435c334 (patch)
tree873b7b110fed68bd3ff101ae4b9c473a53cc78ad /sbin/mksnap_ffs
parentc09c34bb73634b06d27c71a728cfe92c799d8e32 (diff)
downloadFreeBSD-src-af2849b505125bd246931a01ac1ea4b3c435c334.zip
FreeBSD-src-af2849b505125bd246931a01ac1ea4b3c435c334.tar.gz
Add the mksnap_ffs command to the sbin directory. This setuid root
program allows users in the operator group to take filesystem snapshots. Its first use will be in support of `dump -L'. Approved by: Technical Review Board <trb@FreeBSD.org> Sponsored by: DARPA & NAI Labs.
Diffstat (limited to 'sbin/mksnap_ffs')
-rw-r--r--sbin/mksnap_ffs/Makefile14
-rw-r--r--sbin/mksnap_ffs/mksnap_ffs.875
-rw-r--r--sbin/mksnap_ffs/mksnap_ffs.c82
3 files changed, 171 insertions, 0 deletions
diff --git a/sbin/mksnap_ffs/Makefile b/sbin/mksnap_ffs/Makefile
new file mode 100644
index 0000000..3c08f56
--- /dev/null
+++ b/sbin/mksnap_ffs/Makefile
@@ -0,0 +1,14 @@
+# $FreeBSD$
+
+PROG= mksnap_ffs
+MAN= mksnap_ffs.8
+
+.if defined(NOSUID)
+BINMODE=550
+.else
+BINMODE=4550
+BINOWN= root
+.endif
+BINGRP= operator
+
+.include <bsd.prog.mk>
diff --git a/sbin/mksnap_ffs/mksnap_ffs.8 b/sbin/mksnap_ffs/mksnap_ffs.8
new file mode 100644
index 0000000..b20e435
--- /dev/null
+++ b/sbin/mksnap_ffs/mksnap_ffs.8
@@ -0,0 +1,75 @@
+.\"
+.\" Copyright (c) 2003 Networks Associates Technology, Inc.
+.\" All rights reserved.
+.\"
+.\" This software was developed for the FreeBSD Project by Marshall
+.\" Kirk McKusick and Network Associates Laboratories, the Security
+.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR
+.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
+.\" research program.
+.\"
+.\" 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.
+.\" 3. The names of the authors may not be used to endorse or promote
+.\" products derived from this software without specific prior written
+.\" permission.
+.\"
+.\" 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd January 19, 2003
+.Dt MKSNAP_FFS 8
+.Os
+.Sh NAME
+.Nm mksnap_ffs
+.Nd take a filesystem snapshot
+.Sh SYNOPSIS
+.Nm
+.Ar mountpoint
+.Ar snapshot_name
+.Sh DESCRIPTION
+The
+.Nm
+command creates a snapshot named
+.Ar snapshot_name
+on the filesystem mounted at
+.Ar mountpoint .
+The
+.Ar snapshot_name
+argument must be contained within the filesystem mounted at
+.Ar mountpoint .
+.Pp
+The group ownership of the file is set to
+.Dq operator ;
+the owner of the file remains
+.Dq root .
+The mode of the snapshot is set to be readable by the owner
+or members of the
+.Dq operator
+group.
+.Sh SEE ALSO
+.Xr chmod 2 ,
+.Xr chown 8 ,
+.Xr mount_ffs 8
+.Sh HISTORY
+A
+.Nm
+command first appeared in
+.Fx 5.0 .
diff --git a/sbin/mksnap_ffs/mksnap_ffs.c b/sbin/mksnap_ffs/mksnap_ffs.c
new file mode 100644
index 0000000..8f33cde
--- /dev/null
+++ b/sbin/mksnap_ffs/mksnap_ffs.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2003 Networks Associates Technology, Inc.
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by Marshall
+ * Kirk McKusick and Network Associates Laboratories, the Security
+ * Research Division of Network Associates, Inc. under DARPA/SPAWAR
+ * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
+ * research program.
+ *
+ * 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.
+ * 3. The names of the authors may not be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <ufs/ufs/ufsmount.h>
+#include <err.h>
+#include <errno.h>
+#include <grp.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+void
+usage()
+{
+
+ fprintf(stderr, "usage: mksnap_ffs mountpoint file\n");
+ exit(EX_USAGE);
+}
+
+int
+main(int argc, char **argv)
+{
+ const char *dir;
+ struct ufs_args args;
+ struct group *grp;
+
+ if (argc != 3)
+ usage();
+
+ dir = argv[1];
+ args.fspec = argv[2];
+
+ if ((grp = getgrnam("operator")) == NULL)
+ errx(1, "Cannot retrieve operator gid");
+ if (mount("ffs", dir, MNT_UPDATE | MNT_SNAPSHOT, &args) < 0)
+ err(1, "Cannot create %s", args.fspec);
+ if (chown(args.fspec, -1, grp->gr_gid) != 0)
+ err(1, "Cannot chown %s", args.fspec);
+ if (chmod(args.fspec, S_IRUSR | S_IRGRP) != 0)
+ err(1, "Cannot chmod %s", args.fspec);
+
+ exit(EXIT_SUCCESS);
+}
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