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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <locale.h>
#include <stdio.h>
#include <time.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/mntent.h>
#include <sys/mnttab.h>
#include <sys/mount.h>
#include <sys/fs/pc_fs.h>
#include <fslib.h>
extern int daylight;
static int roflag = 0;
static char optbuf[MAX_MNTOPT_STR] = { '\0', };
static int optsize = 0;
/*
* Since the format/value expected for the mount options listed below
* differs between what the user mount command expects and what the
* kernel module can grok, we transmogrify the mount option string
* for such options. Others are copied through as-is.
*/
static char *pcfs_opts[] = { MNTOPT_PCFS_TIMEZONE, NULL };
#define ARG_PCFS_TIMEZONE 0
/*
* While constructing the mount option string, we need to append
* comma separators if there have been previous options copied over
* from the input string. This takes care of it.
*/
static int
append_opt(char *str, int strsz, char *opt)
{
if (str[0] != '\0' && strlcat(str, ",", strsz) >= strsz)
return (0);
return (strlcat(str, opt, strsz) < strsz);
}
int
main(int argc, char *argv[])
{
char *mnt_special;
char *mnt_mountp;
int c;
char *myname;
char typename[64];
char tzstr[100];
char *tzval;
char *savedoptbuf = NULL, *savedoptarg = NULL;
char *in_arg, *val, *curarg;
extern int optind;
extern char *optarg;
int error = 0;
int verbose = 0;
int mflg = MS_OPTIONSTR; /* we always pass mount options */
int qflg = 0;
int optcnt = 0;
int tzdone = 0;
myname = strrchr(argv[0], '/');
myname = myname ? myname + 1 : argv[0];
(void) snprintf(typename, sizeof (typename), "%s_%s",
MNTTYPE_PCFS, myname);
argv[0] = typename;
while ((c = getopt(argc, argv, "Vvmr?o:Oq")) != EOF) {
switch (c) {
case 'V':
case 'v':
verbose++;
break;
case '?':
error++;
break;
case 'r':
roflag++;
break;
case 'm':
mflg |= MS_NOMNTTAB;
break;
case 'o':
in_arg = optarg;
if ((savedoptarg = strdup(optarg)) == NULL) {
(void) fprintf(stderr,
gettext("%s: out of memory\n"), myname);
exit(2);
}
while (*in_arg != '\0') {
curarg = in_arg;
switch (getsubopt(&in_arg, pcfs_opts, &val)) {
case ARG_PCFS_TIMEZONE:
if (tzdone || val == NULL)
goto invalarg;
tzval = val;
(void) snprintf(tzstr, 100,
"TZ=%s", tzval);
tzstr[99] = '\0';
(void) putenv(tzstr);
tzdone = 1;
break;
default:
/*
* Remove empty suboptions
* (happens on sequences of commas)
*/
if (*curarg == '\0')
break;
if (append_opt(optbuf, sizeof (optbuf),
curarg) == 0)
goto invalarg;
}
}
break;
case 'O':
mflg |= MS_OVERLAY;
break;
case 'q':
qflg = 1;
break;
}
}
if (verbose && !error) {
char *optptr;
(void) fprintf(stderr, "%s", typename);
for (optcnt = 1; optcnt < argc; optcnt++) {
optptr = argv[optcnt];
if (optptr)
(void) fprintf(stderr, " %s", optptr);
}
(void) fprintf(stderr, "\n");
}
if (argc - optind != 2 || error) {
/*
* don't hint at options yet (none are really supported)
*/
(void) fprintf(stderr, gettext(
"Usage: %s [generic options] [-o suboptions] "
"special mount_point\n"), typename);
(void) fprintf(stderr, gettext(
"\tpcfs-specific suboptions are:\n"
"\t clamptime,noclamptime\n"
"\t hidden,nohidden\n"
"\t atime,noatime\n"
"\t foldcase,nofoldcase\n"
"\t timezone=<valid TZ string>"));
exit(32);
}
mnt_special = argv[optind++];
mnt_mountp = argv[optind++];
/*
* Pass timezone information to the kernel module so that
* FAT timestamps, as per spec, can be recorded in local time.
*/
tzset();
/*
* We perform this validation only in case the user of
* mount(1m) specified the "timezone=..." option. That's
* because we don't want PCFS mounts to fail due to a
* botched $TZ environment variable. If the admin's
* environment contains garbage, it'll just parse as
* GMT (timezone=0).
*/
if (tzdone && timezone == 0 && altzone == 0 && daylight == 0 &&
strcmp(tzname[0], tzval) &&
strspn(tzname[1], " ") == strlen(tzname[1])) {
goto invalarg;
}
(void) snprintf(tzstr, 100, "timezone=%d", timezone);
tzstr[99] = '\0';
if (append_opt(optbuf, sizeof (optbuf), tzstr) == 0)
goto invalarg;
optsize = strlen(optbuf);
if (roflag)
mflg |= MS_RDONLY;
if ((savedoptbuf = strdup(optbuf)) == NULL) {
(void) fprintf(stderr, gettext("%s: out of memory\n"),
myname);
exit(2);
}
(void) signal(SIGHUP, SIG_IGN);
(void) signal(SIGQUIT, SIG_IGN);
(void) signal(SIGINT, SIG_IGN);
if (verbose) {
(void) fprintf(stderr, "mount(%s, \"%s\", %d, %s",
mnt_special, mnt_mountp, mflg, MNTTYPE_PCFS);
}
if (mount(mnt_special, mnt_mountp, mflg, MNTTYPE_PCFS,
NULL, 0, optbuf, MAX_MNTOPT_STR)) {
if (errno == EBUSY) {
(void) fprintf(stderr, gettext(
"mount: %s is already mounted or %s is busy\n"),
mnt_special, mnt_mountp);
} else if (errno == EINVAL) {
(void) fprintf(stderr, gettext(
"mount: %s is not a DOS filesystem.\n"),
mnt_special);
} else {
perror("mount");
}
exit(32);
}
if (optsize && !qflg)
cmp_requested_to_actual_options(savedoptbuf, optbuf,
mnt_special, mnt_mountp);
return (0);
invalarg:
(void) fprintf(stderr,
gettext("%s: Invalid mount options: %s\n"), myname, savedoptarg);
return (2);
}
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