freebsd-skq/sbin/mount_msdosfs/mount_msdosfs.c
Pedro F. Giffuni 1de7b4b805 various: general adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:37:16 +00:00

327 lines
8.2 KiB
C

/* $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 <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)
return (-1);
if (cs_dos != NULL) {
error = kiconv_add_xlat16_cspairs(cs_dos, cs_local);
if (error)
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)
return (-1);
}
return (0);
}