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Added mount_msdos.

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Obtained from: NetBSD
This commit is contained in:
Doug Rabson 1994-09-19 15:30:36 +00:00
parent 0a7f0f3504
commit 5cb2bca1a3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=2892
10 changed files with 981 additions and 3 deletions
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6
sbin/Makefile
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@ -4,9 +4,9 @@
# XXX NEEDS CONVERSION: scsiformat
SUBDIR= adjkerntz badsect clri comcontrol disklabel dmesg dump dumpfs dumplfs \
fdisk fsck ifconfig init mknod modload modunload mount mount_cd9660 \
mount_fdesc mount_kernfs mount_lfs mount_nfs mount_null mount_portal \
mount_procfs mount_umap mount_union mountd newfs newlfs nfsd \
nfsiod nologin ping quotacheck reboot restore route savecore \
mount_fdesc mount_kernfs mount_lfs mount_nfs mount_null mount_msdos \
mount_portal mount_procfs mount_umap mount_union mountd newfs newlfs \
nfsd nfsiod nologin ping quotacheck reboot restore route savecore \
shutdown slattach startslip swapon tunefs umount
.include <bsd.subdir.mk>

16
sbin/i386/mount_msdos/Makefile Normal file
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#
# $Id: Makefile,v 1.6 1994/07/16 21:32:06 cgd Exp $
#
PROG= mount_msdos
SRCS= mount_msdos.c getmntopts.c
MAN8= mount_msdos.8
BINOWN= root
BINMODE= 4555
MOUNT= ${.CURDIR}/../mount
CFLAGS+= -I${MOUNT}
.PATH: ${MOUNT}
.include <bsd.prog.mk>

111
sbin/i386/mount_msdos/mount_msdos.8 Normal file
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.\"
.\" Copyright (c) 1993,1994 Christopher G. Demetriou
.\" 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.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Christopher G. Demetriou.
.\" 3. The name of the author 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 ``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 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.
.\"
.\" $Id: mount_msdos.8,v 1.5 1994/07/16 21:32:07 cgd Exp $
.\"
.Dd April 7, 1994
.Dt MOUNT_MSDOS 8
.Os NetBSD 0.9a
.Sh NAME
.Nm mount_msdos
.Nd mount an MS-DOS file system
.Sh SYNOPSIS
.Nm mount_msdos
.Op Fl u Ar uid
.Op Fl g Ar gid
.Op Fl m Ar mask
.Pa special
.Pa node
.Sh DESCRIPTION
The
.Nm mount_msdos
command attaches the MS-DOS filesystem residing on
the device
.Pa special
to the global filesystem namespace at the location
indicated by
.Pa node .
This command is normally executed by
.Xr mount 8
at boot time, but can be used by any user to mount an
MS-DOS file system on any directory that they own (provided,
of course, that they have appropriate access to the device that
contains the file system).
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl u
Set the owner of the files in the file system to
.Ar uid .
The default owner is the owner of the directory
on which the file system is being mounted.
.It Fl g
Set the group of the files in the file system to
.Ar gid .
The default group is the group of the directory
on which the file system is being mounted.
.It Fl m
Specify the maximum file permissions for files
in the file system.
(For example, a mask of
.Li 755
specifies that, by default, the owner should have
read, write, and execute permissions for files, but
others should only have read and execute permissions.
See
.Xr chmod 1
for more information about octal file modes.)
Only the nine low-order bits of
.Ar mask
are used.
The default mask is taken from the
directory on which the file system is being mounted.
.El
.Sh SEE ALSO
.Xr mount 2 ,
.Xr unmount 2 ,
.Xr fstab 5
.Sh CAVEATS
The
.Nm msdos
filesystem is not known to work reliably with filesystems created by versions
of MS-DOS later than version 3.3.
.Pp
The limitations on file names imposed by MS-DOS are strange, at best.
For instance, they are
limited to single-case, 8 character names with 3 character extensions.
.Sh HISTORY
The
.Nm mount_msdos
utility first appeared in NetBSD 0.9.
Its predecessor, the
.Nm mount_pcfs
utility appeared in NetBSD 0.8, and was abandoned in favor
of the more aptly-named
.Nm mount_msdos .

199
sbin/i386/mount_msdos/mount_msdos.c Normal file
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/*
* Copyright (c) 1994 Christopher G. Demetriou
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou.
* 4. The name of the author 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 ``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 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.
*/
#ifndef lint
static char rcsid[] = "$Id: mount_msdos.c,v 1.8 1994/07/16 21:32:08 cgd Exp $";
#endif /* not lint */
#include <sys/cdefs.h>
#include <sys/param.h>
#define MSDOSFS
#include <sys/mount.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "mntopts.h"
struct mntopt mopts[] = {
MOPT_STDOPTS,
{ NULL }
};
gid_t a_gid __P((char *));
uid_t a_uid __P((char *));
mode_t a_mask __P((char *));
void usage __P((void));
int
main(argc, argv)
int argc;
char **argv;
{
struct msdosfs_args args;
struct stat sb;
int c, mntflags, set_gid, set_uid, set_mask;
char *dev, *dir, ndir[MAXPATHLEN+1];
mntflags = set_gid = set_uid = set_mask = 0;
(void)memset(&args, '\0', sizeof(args));
while ((c = getopt(argc, argv, "u:g:m:o:")) != EOF) {
switch (c) {
case 'u':
args.uid = a_uid(optarg);
set_uid = 1;
break;
case 'g':
args.gid = a_gid(optarg);
set_gid = 1;
break;
case 'm':
args.mask = a_mask(optarg);
set_mask = 1;
break;
case 'o':
getmntopts(optarg, mopts, &mntflags);
break;
case '?':
default:
usage();
break;
}
}
if (optind + 2 != argc)
usage();
dev = argv[optind];
dir = argv[optind + 1];
if (dir[0] != '/') {
warnx("\"%s\" is a relative path.", dir);
if (getcwd(ndir, sizeof(ndir)) == NULL)
err(1, "getcwd");
strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1);
strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1);
dir = ndir;
warnx("using \"%s\" instead.", dir);
}
args.fspec = dev;
args.export.ex_root = -2; /* unchecked anyway on DOS fs */
if (mntflags & MNT_RDONLY)
args.export.ex_flags = MNT_EXRDONLY;
else
args.export.ex_flags = 0;
if (!set_gid || !set_uid || !set_mask) {
if (stat(dir, &sb) == -1)
err(1, "stat %s", dir);
if (!set_uid)
args.uid = sb.st_uid;
if (!set_gid)
args.gid = sb.st_gid;
if (!set_mask)
args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
}
if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0)
err(1, "mount");
exit (0);
}
gid_t
a_gid(s)
char *s;
{
struct group *gr;
char *gname;
gid_t gid;
if ((gr = getgrnam(s)) != NULL)
gid = gr->gr_gid;
else {
for (gname = s; *s && isdigit(*s); ++s);
if (!*s)
gid = atoi(gname);
else
errx(1, "unknown group id: %s", gname);
}
return (gid);
}
uid_t
a_uid(s)
char *s;
{
struct passwd *pw;
char *uname;
uid_t uid;
if ((pw = getpwnam(s)) != NULL)
uid = pw->pw_uid;
else {
for (uname = s; *s && isdigit(*s); ++s);
if (!*s)
uid = atoi(uname);
else
errx(1, "unknown user id: %s", uname);
}
return (uid);
}
mode_t
a_mask(s)
char *s;
{
int done, rv;
char *ep;
done = 0;
if (*s >= '0' && *s <= '7') {
done = 1;
rv = strtol(optarg, &ep, 8);
}
if (!done || rv < 0 || *ep)
errx(1, "invalid file mode: %s", s);
return (rv);
}
void
usage()
{
fprintf(stderr, "usage: mount_msdos [-F flags] [-u user] [-g group] [-m mask] bdev dir\n");
exit(1);
}

16
sbin/mount_msdos/Makefile Normal file
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#
# $Id: Makefile,v 1.6 1994/07/16 21:32:06 cgd Exp $
#
PROG= mount_msdos
SRCS= mount_msdos.c getmntopts.c
MAN8= mount_msdos.8
BINOWN= root
BINMODE= 4555
MOUNT= ${.CURDIR}/../mount
CFLAGS+= -I${MOUNT}
.PATH: ${MOUNT}
.include <bsd.prog.mk>

111
sbin/mount_msdos/mount_msdos.8 Normal file
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.\"
.\" Copyright (c) 1993,1994 Christopher G. Demetriou
.\" 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.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Christopher G. Demetriou.
.\" 3. The name of the author 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 ``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 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.
.\"
.\" $Id: mount_msdos.8,v 1.5 1994/07/16 21:32:07 cgd Exp $
.\"
.Dd April 7, 1994
.Dt MOUNT_MSDOS 8
.Os NetBSD 0.9a
.Sh NAME
.Nm mount_msdos
.Nd mount an MS-DOS file system
.Sh SYNOPSIS
.Nm mount_msdos
.Op Fl u Ar uid
.Op Fl g Ar gid
.Op Fl m Ar mask
.Pa special
.Pa node
.Sh DESCRIPTION
The
.Nm mount_msdos
command attaches the MS-DOS filesystem residing on
the device
.Pa special
to the global filesystem namespace at the location
indicated by
.Pa node .
This command is normally executed by
.Xr mount 8
at boot time, but can be used by any user to mount an
MS-DOS file system on any directory that they own (provided,
of course, that they have appropriate access to the device that
contains the file system).
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl u
Set the owner of the files in the file system to
.Ar uid .
The default owner is the owner of the directory
on which the file system is being mounted.
.It Fl g
Set the group of the files in the file system to
.Ar gid .
The default group is the group of the directory
on which the file system is being mounted.
.It Fl m
Specify the maximum file permissions for files
in the file system.
(For example, a mask of
.Li 755
specifies that, by default, the owner should have
read, write, and execute permissions for files, but
others should only have read and execute permissions.
See
.Xr chmod 1
for more information about octal file modes.)
Only the nine low-order bits of
.Ar mask
are used.
The default mask is taken from the
directory on which the file system is being mounted.
.El
.Sh SEE ALSO
.Xr mount 2 ,
.Xr unmount 2 ,
.Xr fstab 5
.Sh CAVEATS
The
.Nm msdos
filesystem is not known to work reliably with filesystems created by versions
of MS-DOS later than version 3.3.
.Pp
The limitations on file names imposed by MS-DOS are strange, at best.
For instance, they are
limited to single-case, 8 character names with 3 character extensions.
.Sh HISTORY
The
.Nm mount_msdos
utility first appeared in NetBSD 0.9.
Its predecessor, the
.Nm mount_pcfs
utility appeared in NetBSD 0.8, and was abandoned in favor
of the more aptly-named
.Nm mount_msdos .

199
sbin/mount_msdos/mount_msdos.c Normal file
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/*
* Copyright (c) 1994 Christopher G. Demetriou
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou.
* 4. The name of the author 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 ``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 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.
*/
#ifndef lint
static char rcsid[] = "$Id: mount_msdos.c,v 1.8 1994/07/16 21:32:08 cgd Exp $";
#endif /* not lint */
#include <sys/cdefs.h>
#include <sys/param.h>
#define MSDOSFS
#include <sys/mount.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "mntopts.h"
struct mntopt mopts[] = {
MOPT_STDOPTS,
{ NULL }
};
gid_t a_gid __P((char *));
uid_t a_uid __P((char *));
mode_t a_mask __P((char *));
void usage __P((void));
int
main(argc, argv)
int argc;
char **argv;
{
struct msdosfs_args args;
struct stat sb;
int c, mntflags, set_gid, set_uid, set_mask;
char *dev, *dir, ndir[MAXPATHLEN+1];
mntflags = set_gid = set_uid = set_mask = 0;
(void)memset(&args, '\0', sizeof(args));
while ((c = getopt(argc, argv, "u:g:m:o:")) != EOF) {
switch (c) {
case 'u':
args.uid = a_uid(optarg);
set_uid = 1;
break;
case 'g':
args.gid = a_gid(optarg);
set_gid = 1;
break;
case 'm':
args.mask = a_mask(optarg);
set_mask = 1;
break;
case 'o':
getmntopts(optarg, mopts, &mntflags);
break;
case '?':
default:
usage();
break;
}
}
if (optind + 2 != argc)
usage();
dev = argv[optind];
dir = argv[optind + 1];
if (dir[0] != '/') {
warnx("\"%s\" is a relative path.", dir);
if (getcwd(ndir, sizeof(ndir)) == NULL)
err(1, "getcwd");
strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1);
strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1);
dir = ndir;
warnx("using \"%s\" instead.", dir);
}
args.fspec = dev;
args.export.ex_root = -2; /* unchecked anyway on DOS fs */
if (mntflags & MNT_RDONLY)
args.export.ex_flags = MNT_EXRDONLY;
else
args.export.ex_flags = 0;
if (!set_gid || !set_uid || !set_mask) {
if (stat(dir, &sb) == -1)
err(1, "stat %s", dir);
if (!set_uid)
args.uid = sb.st_uid;
if (!set_gid)
args.gid = sb.st_gid;
if (!set_mask)
args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
}
if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0)
err(1, "mount");
exit (0);
}
gid_t
a_gid(s)
char *s;
{
struct group *gr;
char *gname;
gid_t gid;
if ((gr = getgrnam(s)) != NULL)
gid = gr->gr_gid;
else {
for (gname = s; *s && isdigit(*s); ++s);
if (!*s)
gid = atoi(gname);
else
errx(1, "unknown group id: %s", gname);
}
return (gid);
}
uid_t
a_uid(s)
char *s;
{
struct passwd *pw;
char *uname;
uid_t uid;
if ((pw = getpwnam(s)) != NULL)
uid = pw->pw_uid;
else {
for (uname = s; *s && isdigit(*s); ++s);
if (!*s)
uid = atoi(uname);
else
errx(1, "unknown user id: %s", uname);
}
return (uid);
}
mode_t
a_mask(s)
char *s;
{
int done, rv;
char *ep;
done = 0;
if (*s >= '0' && *s <= '7') {
done = 1;
rv = strtol(optarg, &ep, 8);
}
if (!done || rv < 0 || *ep)
errx(1, "invalid file mode: %s", s);
return (rv);
}
void
usage()
{
fprintf(stderr, "usage: mount_msdos [-F flags] [-u user] [-g group] [-m mask] bdev dir\n");
exit(1);
}

16
sbin/mount_msdosfs/Makefile Normal file
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#
# $Id: Makefile,v 1.6 1994/07/16 21:32:06 cgd Exp $
#
PROG= mount_msdos
SRCS= mount_msdos.c getmntopts.c
MAN8= mount_msdos.8
BINOWN= root
BINMODE= 4555
MOUNT= ${.CURDIR}/../mount
CFLAGS+= -I${MOUNT}
.PATH: ${MOUNT}
.include <bsd.prog.mk>

111
sbin/mount_msdosfs/mount_msdosfs.8 Normal file
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@ -0,0 +1,111 @@
.\"
.\" Copyright (c) 1993,1994 Christopher G. Demetriou
.\" 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.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Christopher G. Demetriou.
.\" 3. The name of the author 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 ``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 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.
.\"
.\" $Id: mount_msdos.8,v 1.5 1994/07/16 21:32:07 cgd Exp $
.\"
.Dd April 7, 1994
.Dt MOUNT_MSDOS 8
.Os NetBSD 0.9a
.Sh NAME
.Nm mount_msdos
.Nd mount an MS-DOS file system
.Sh SYNOPSIS
.Nm mount_msdos
.Op Fl u Ar uid
.Op Fl g Ar gid
.Op Fl m Ar mask
.Pa special
.Pa node
.Sh DESCRIPTION
The
.Nm mount_msdos
command attaches the MS-DOS filesystem residing on
the device
.Pa special
to the global filesystem namespace at the location
indicated by
.Pa node .
This command is normally executed by
.Xr mount 8
at boot time, but can be used by any user to mount an
MS-DOS file system on any directory that they own (provided,
of course, that they have appropriate access to the device that
contains the file system).
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl u
Set the owner of the files in the file system to
.Ar uid .
The default owner is the owner of the directory
on which the file system is being mounted.
.It Fl g
Set the group of the files in the file system to
.Ar gid .
The default group is the group of the directory
on which the file system is being mounted.
.It Fl m
Specify the maximum file permissions for files
in the file system.
(For example, a mask of
.Li 755
specifies that, by default, the owner should have
read, write, and execute permissions for files, but
others should only have read and execute permissions.
See
.Xr chmod 1
for more information about octal file modes.)
Only the nine low-order bits of
.Ar mask
are used.
The default mask is taken from the
directory on which the file system is being mounted.
.El
.Sh SEE ALSO
.Xr mount 2 ,
.Xr unmount 2 ,
.Xr fstab 5
.Sh CAVEATS
The
.Nm msdos
filesystem is not known to work reliably with filesystems created by versions
of MS-DOS later than version 3.3.
.Pp
The limitations on file names imposed by MS-DOS are strange, at best.
For instance, they are
limited to single-case, 8 character names with 3 character extensions.
.Sh HISTORY
The
.Nm mount_msdos
utility first appeared in NetBSD 0.9.
Its predecessor, the
.Nm mount_pcfs
utility appeared in NetBSD 0.8, and was abandoned in favor
of the more aptly-named
.Nm mount_msdos .

199
sbin/mount_msdosfs/mount_msdosfs.c Normal file
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@ -0,0 +1,199 @@
/*
* Copyright (c) 1994 Christopher G. Demetriou
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou.
* 4. The name of the author 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 ``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 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.
*/
#ifndef lint
static char rcsid[] = "$Id: mount_msdos.c,v 1.8 1994/07/16 21:32:08 cgd Exp $";
#endif /* not lint */
#include <sys/cdefs.h>
#include <sys/param.h>
#define MSDOSFS
#include <sys/mount.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "mntopts.h"
struct mntopt mopts[] = {
MOPT_STDOPTS,
{ NULL }
};
gid_t a_gid __P((char *));
uid_t a_uid __P((char *));
mode_t a_mask __P((char *));
void usage __P((void));
int
main(argc, argv)
int argc;
char **argv;
{
struct msdosfs_args args;
struct stat sb;
int c, mntflags, set_gid, set_uid, set_mask;
char *dev, *dir, ndir[MAXPATHLEN+1];
mntflags = set_gid = set_uid = set_mask = 0;
(void)memset(&args, '\0', sizeof(args));
while ((c = getopt(argc, argv, "u:g:m:o:")) != EOF) {
switch (c) {
case 'u':
args.uid = a_uid(optarg);
set_uid = 1;
break;
case 'g':
args.gid = a_gid(optarg);
set_gid = 1;
break;
case 'm':
args.mask = a_mask(optarg);
set_mask = 1;
break;
case 'o':
getmntopts(optarg, mopts, &mntflags);
break;
case '?':
default:
usage();
break;
}
}
if (optind + 2 != argc)
usage();
dev = argv[optind];
dir = argv[optind + 1];
if (dir[0] != '/') {
warnx("\"%s\" is a relative path.", dir);
if (getcwd(ndir, sizeof(ndir)) == NULL)
err(1, "getcwd");
strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1);
strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1);
dir = ndir;
warnx("using \"%s\" instead.", dir);
}
args.fspec = dev;
args.export.ex_root = -2; /* unchecked anyway on DOS fs */
if (mntflags & MNT_RDONLY)
args.export.ex_flags = MNT_EXRDONLY;
else
args.export.ex_flags = 0;
if (!set_gid || !set_uid || !set_mask) {
if (stat(dir, &sb) == -1)
err(1, "stat %s", dir);
if (!set_uid)
args.uid = sb.st_uid;
if (!set_gid)
args.gid = sb.st_gid;
if (!set_mask)
args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
}
if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0)
err(1, "mount");
exit (0);
}
gid_t
a_gid(s)
char *s;
{
struct group *gr;
char *gname;
gid_t gid;
if ((gr = getgrnam(s)) != NULL)
gid = gr->gr_gid;
else {
for (gname = s; *s && isdigit(*s); ++s);
if (!*s)
gid = atoi(gname);
else
errx(1, "unknown group id: %s", gname);
}
return (gid);
}
uid_t
a_uid(s)
char *s;
{
struct passwd *pw;
char *uname;
uid_t uid;
if ((pw = getpwnam(s)) != NULL)
uid = pw->pw_uid;
else {
for (uname = s; *s && isdigit(*s); ++s);
if (!*s)
uid = atoi(uname);
else
errx(1, "unknown user id: %s", uname);
}
return (uid);
}
mode_t
a_mask(s)
char *s;
{
int done, rv;
char *ep;
done = 0;
if (*s >= '0' && *s <= '7') {
done = 1;
rv = strtol(optarg, &ep, 8);
}
if (!done || rv < 0 || *ep)
errx(1, "invalid file mode: %s", s);
return (rv);
}
void
usage()
{
fprintf(stderr, "usage: mount_msdos [-F flags] [-u user] [-g group] [-m mask] bdev dir\n");
exit(1);
}