4.4BSD/usr/src/usr.sbin/amd/amd/mount_fs.c
/*
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* 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 the University of
* California, Berkeley and its contributors.
* 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.
*
* @(#)mount_fs.c 8.1 (Berkeley) 6/6/93
*
* $Id: mount_fs.c,v 5.2.2.2 1992/05/31 16:35:45 jsp Exp $
*
*/
#include "am.h"
#ifdef NFS_3
typedef nfs_fh fhandle_t;
#endif /* NFS_3 */
#include <sys/mount.h>
#include <sys/stat.h>
/*
* Standard mount flags
*/
#ifdef hpux
/*
* HP-UX has an annoying feature of printing
* error msgs on /dev/console
*/
#undef M_NOSUID
#endif /* hpux */
struct opt_tab mnt_flags[] = {
{ "ro", M_RDONLY },
#ifdef M_CACHE
{ "nocache", M_NOCACHE },
#endif /* M_CACHE */
#ifdef M_GRPID
{ "grpid", M_GRPID },
#endif /* M_GRPID */
#ifdef M_MULTI
{ "multi", M_MULTI },
#endif /* M_MULTI */
#ifdef M_NODEV
{ "nodev", M_NODEV },
#endif /* M_NODEV */
#ifdef M_NOEXEC
{ "noexec", M_NOEXEC },
#endif /* M_NOEXEC */
#ifdef M_NOSUB
{ "nosub", M_NOSUB },
#endif /* M_NOSUB */
#ifdef M_NOSUID
{ "nosuid", M_NOSUID },
#endif /* M_NOSUID */
#ifdef M_SYNC
{ "sync", M_SYNC },
#endif /* M_SYNC */
{ 0, 0 }
};
int compute_mount_flags(mnt)
struct mntent *mnt;
{
struct opt_tab *opt;
int flags;
#ifdef NFS_4
flags = M_NEWTYPE;
#else
flags = 0;
#endif /* NFS_4 */
/*
* Crack basic mount options
*/
for (opt = mnt_flags; opt->opt; opt++)
flags |= hasmntopt(mnt, opt->opt) ? opt->flag : 0;
return flags;
}
int mount_fs P((struct mntent *mnt, int flags, caddr_t mnt_data, int retry, MTYPE_TYPE type));
int mount_fs(mnt, flags, mnt_data, retry, type)
struct mntent *mnt;
int flags;
caddr_t mnt_data;
int retry;
MTYPE_TYPE type;
{
int error = 0;
#ifdef MNTINFO_DEV
struct stat stb;
char *xopts = 0;
#endif /* MNTINFO_DEV */
#ifdef DEBUG
#ifdef NFS_4
dlog("%s fstype %s (%s) flags %#x (%s)",
mnt->mnt_dir, type, mnt->mnt_type, flags, mnt->mnt_opts);
#else
dlog("%s fstype %d (%s) flags %#x (%s)",
mnt->mnt_dir, type, mnt->mnt_type, flags, mnt->mnt_opts);
#endif /* NFS_4 */
#endif /* DEBUG */
/*
* Fake some mount table entries for the automounter
*/
#ifdef FASCIST_DF_COMMAND
/*
* Some systems have a df command which blows up when
* presented with an unknown mount type.
*/
if (STREQ(mnt->mnt_type, MNTTYPE_AUTO)) {
/*
* Try it with the normal name
*/
mnt->mnt_type = FASCIST_DF_COMMAND;
}
#endif /* FASCIST_DF_COMMAND */
again:
clock_valid = 0;
error = MOUNT_TRAP(type, mnt, flags, mnt_data);
if (error < 0)
plog(XLOG_ERROR, "%s: mount: %m", mnt->mnt_dir);
if (error < 0 && --retry > 0) {
sleep(1);
goto again;
}
if (error < 0) {
#ifdef notdef
if (automount)
going_down(errno);
#endif
return errno;
}
#ifdef UPDATE_MTAB
#ifdef MNTINFO_DEV
/*
* Add the extra dev= field to the mount table.
*/
if (lstat(mnt->mnt_dir, &stb) == 0) {
char *zopts = (char *) xmalloc(strlen(mnt->mnt_opts) + 32);
xopts = mnt->mnt_opts;
if (sizeof(stb.st_dev) == 2) {
/* e.g. SunOS 4.1 */
sprintf(zopts, "%s,%s=%s%04lx", xopts, MNTINFO_DEV,
MNTINFO_PREF, (u_long) stb.st_dev & 0xffff);
} else {
/* e.g. System Vr4 */
sprintf(zopts, "%s,%s=%s%08lx", xopts, MNTINFO_DEV,
MNTINFO_PREF, (u_long) stb.st_dev);
}
mnt->mnt_opts = zopts;
}
#endif /* MNTINFO_DEV */
#ifdef FIXUP_MNTENT
/*
* Additional fields in struct mntent
* are fixed up here
*/
FIXUP_MNTENT(mnt);
#endif
write_mntent(mnt);
#ifdef MNTINFO_DEV
if (xopts) {
free(mnt->mnt_opts);
mnt->mnt_opts = xopts;
}
#endif /* MNTINFO_DEV */
#endif /* UPDATE_MTAB */
return 0;
}
#ifdef NEED_MNTOPT_PARSER
/*
* Some systems don't provide these to the user,
* but amd needs them, so...
*
* From: Piete Brooks <pb@cl.cam.ac.uk>
*/
#include <ctype.h>
static char *nextmntopt(p)
char **p;
{
char *cp = *p;
char *rp;
/*
* Skip past white space
*/
while (*cp && isspace(*cp))
cp++;
/*
* Word starts here
*/
rp = cp;
/*
* Scan to send of string or separator
*/
while (*cp && *cp != ',')
cp++;
/*
* If separator found the overwrite with nul char.
*/
if (*cp) {
*cp = '\0';
cp++;
}
/*
* Return value for next call
*/
*p = cp;
return rp;
}
char *hasmntopt(mnt, opt)
struct mntent *mnt;
char *opt;
{
char t[MNTMAXSTR];
char *f;
char *o = t;
int l = strlen(opt);
strcpy(t, mnt->mnt_opts);
while (*(f = nextmntopt(&o)))
if (strncmp(opt, f, l) == 0)
return f - t + mnt->mnt_opts;
return 0;
}
#endif /* NEED_MNTOPT_PARSER */
#ifdef MOUNT_HELPER_SOURCE
#include MOUNT_HELPER_SOURCE
#endif /* MOUNT_HELPER_SOURCE */