/* $NetBSD: mount_msdos.c,v 1.18 1997/09/16 12:24:18 lukem Exp $ */
/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* 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 const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/iconv.h>
#include <sys/linker.h>
#include <sys/module.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <grp.h>
#include <locale.h>
#include <pwd.h>
#include <stdio.h>
/* must be after stdio to declare fparseln */
#include <libutil.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include "mntopts.h"
static gid_t a_gid(char *);
static uid_t a_uid(char *);
static mode_t a_mask(char *);
static void usage(void) __dead2;
static int set_charset(struct iovec **iov, int *iovlen, const char *, const char *);
int
main(int argc, char **argv)
{
struct iovec *iov = NULL;
int iovlen = 0;
struct stat sb;
int c, set_gid, set_uid, set_mask, set_dirmask;
char *dev, *dir, mntpath[MAXPATHLEN], *csp;
char fstype[] = "msdosfs";
char errmsg[255] = {0};
char *cs_dos = NULL;
char *cs_local = NULL;
mode_t mask = 0, dirmask = 0;
uid_t uid = 0;
gid_t gid = 0;
set_gid = set_uid = set_mask = set_dirmask = 0;
while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:W:")) != -1) {
switch (c) {
case 's':
build_iovec(&iov, &iovlen, "shortnames", NULL, (size_t)-1);
break;
case 'l':
build_iovec(&iov, &iovlen, "longnames", NULL, (size_t)-1);
break;
case '9':
build_iovec_argf(&iov, &iovlen, "nowin95", "", (size_t)-1);
break;
case 'u':
uid = a_uid(optarg);
set_uid = 1;
break;
case 'g':
gid = a_gid(optarg);
set_gid = 1;
break;
case 'm':
mask = a_mask(optarg);
set_mask = 1;
break;
case 'M':
dirmask = a_mask(optarg);
set_dirmask = 1;
break;
case 'L': {
const char *quirk = NULL;
if (setlocale(LC_CTYPE, optarg) == NULL)
err(EX_CONFIG, "%s", optarg);
csp = strchr(optarg,'.');
if (!csp)
err(EX_CONFIG, "%s", optarg);
quirk = kiconv_quirkcs(csp + 1, KICONV_VENDOR_MICSFT);
build_iovec_argf(&iov, &iovlen, "cs_local", quirk);
cs_local = strdup(quirk);
}
break;
case 'D':
cs_dos = strdup(optarg);
build_iovec_argf(&iov, &iovlen, "cs_dos", cs_dos, (size_t)-1);
break;
case 'o': {
char *p = NULL;
char *val = strdup("");
p = strchr(optarg, '=');
if (p != NULL) {
free(val);
*p = '\0';
val = p + 1;
}
build_iovec(&iov, &iovlen, optarg, val, (size_t)-1);
}
break;
case 'W':
if (strcmp(optarg, "iso22dos") == 0) {
cs_local = strdup("ISO8859-2");
cs_dos = strdup("CP852");
} else if (strcmp(optarg, "iso72dos") == 0) {
cs_local = strdup("ISO8859-7");
cs_dos = strdup("CP737");
} else if (strcmp(optarg, "koi2dos") == 0) {
cs_local = strdup("KOI8-R");
cs_dos = strdup("CP866");
} else if (strcmp(optarg, "koi8u2dos") == 0) {
cs_local = strdup("KOI8-U");
cs_dos = strdup("CP866");
} else {
err(EX_NOINPUT, "%s", optarg);
}
build_iovec(&iov, &iovlen, "cs_local", cs_local, (size_t)-1);
build_iovec(&iov, &iovlen, "cs_dos", cs_dos, (size_t)-1);
break;
case '?':
default:
usage();
break;
}
}
if (optind + 2 != argc)
usage();
if (set_mask && !set_dirmask) {
dirmask = mask;
set_dirmask = 1;
}
else if (set_dirmask && !set_mask) {
mask = dirmask;
set_mask = 1;
}
dev = argv[optind];
dir = argv[optind + 1];
if (cs_local != NULL) {
if (set_charset(&iov, &iovlen, cs_local, cs_dos) == -1)
err(EX_OSERR, "msdosfs_iconv");
build_iovec_argf(&iov, &iovlen, "kiconv", "");
} else if (cs_dos != NULL) {
build_iovec_argf(&iov, &iovlen, "cs_local", "ISO8859-1");
if (set_charset(&iov, &iovlen, "ISO8859-1", cs_dos) == -1)
err(EX_OSERR, "msdosfs_iconv");
build_iovec_argf(&iov, &iovlen, "kiconv", "");
}
/*
* Resolve the mountpoint with realpath(3) and remove unnecessary
* slashes from the devicename if there are any.
*/
if (checkpath(dir, mntpath) != 0)
err(EX_USAGE, "%s", mntpath);
(void)rmslashes(dev, dev);
if (!set_gid || !set_uid || !set_mask) {
if (stat(mntpath, &sb) == -1)
err(EX_OSERR, "stat %s", mntpath);
if (!set_uid)
uid = sb.st_uid;
if (!set_gid)
gid = sb.st_gid;
if (!set_mask)
mask = dirmask =
sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
}
build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
build_iovec(&iov, &iovlen, "from", dev, (size_t)-1);
build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
build_iovec_argf(&iov, &iovlen, "uid", "%d", uid);
build_iovec_argf(&iov, &iovlen, "gid", "%u", gid);
build_iovec_argf(&iov, &iovlen, "mask", "%u", mask);
build_iovec_argf(&iov, &iovlen, "dirmask", "%u", dirmask);
if (nmount(iov, iovlen, 0) < 0) {
if (errmsg[0])
err(1, "%s: %s", dev, errmsg);
else
err(1, "%s", dev);
}
exit (0);
}
gid_t
a_gid(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(EX_NOUSER, "unknown group id: %s", gname);
}
return (gid);
}
uid_t
a_uid(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(EX_NOUSER, "unknown user id: %s", uname);
}
return (uid);
}
mode_t
a_mask(char *s)
{
int done, rv;
char *ep;
done = 0;
rv = -1;
if (*s >= '0' && *s <= '7') {
done = 1;
rv = strtol(optarg, &ep, 8);
}
if (!done || rv < 0 || *ep)
errx(EX_USAGE, "invalid file mode: %s", s);
return (rv);
}
void
usage(void)
{
fprintf(stderr, "%s\n%s\n%s\n",
"usage: mount_msdosfs [-9ls] [-D DOS_codepage] [-g gid] [-L locale]",
" [-M mask] [-m mask] [-o options] [-u uid]",
" [-W table] special node");
exit(EX_USAGE);
}
int
set_charset(struct iovec **iov, int *iovlen, const char *cs_local, const char *cs_dos)
{
int error;
if (modfind("msdosfs_iconv") < 0)
if (kldload("msdosfs_iconv") < 0 || modfind("msdosfs_iconv") < 0) {
warnx("cannot find or load \"msdosfs_iconv\" kernel module");
return (-1);
}
build_iovec_argf(iov, iovlen, "cs_win", ENCODING_UNICODE);
error = kiconv_add_xlat16_cspairs(ENCODING_UNICODE, cs_local);
if (error && errno != EEXIST)
return (-1);
if (cs_dos != NULL) {
error = kiconv_add_xlat16_cspairs(cs_dos, cs_local);
if (error && errno != EEXIST)
return (-1);
} else {
build_iovec_argf(iov, iovlen, "cs_dos", cs_local);
error = kiconv_add_xlat16_cspair(cs_local, cs_local,
KICONV_FROM_UPPER | KICONV_LOWER);
if (error && errno != EEXIST)
return (-1);
}
return (0);
}
