HardenedBSD/contrib/smbfs/mount_smbfs/mount_smbfs.c
Edward Tomasz Napierala afe21afeba Make mount_smbfs(8) preserve the "automounted" mount flag.
The issue here is that we have to pass this flag as a string,
in iov, because it doesn't fit in mntflags, which is an int.

MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2014-09-08 10:57:43 +00:00

309 lines
7.8 KiB
C

/*
* Copyright (c) 2000-2002, Boris Popov
* 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 Boris Popov.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $Id: mount_smbfs.c,v 1.17 2002/04/10 04:17:51 bp Exp $
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/errno.h>
#include <sys/linker.h>
#include <sys/mount.h>
#include <stdio.h>
#include <string.h>
#include <pwd.h>
#include <grp.h>
#include <unistd.h>
#include <ctype.h>
#include <stdlib.h>
#include <err.h>
#include <sysexits.h>
#include <cflib.h>
#include <netsmb/smb.h>
#include <netsmb/smb_conn.h>
#include <netsmb/smb_lib.h>
#include <fs/smbfs/smbfs.h>
#include "mntopts.h"
static char mount_point[MAXPATHLEN + 1];
static void usage(void);
static struct mntopt mopts[] = {
MOPT_STDOPTS,
MOPT_END
};
static char smbfs_vfsname[] = "smbfs";
int
main(int argc, char *argv[])
{
struct iovec *iov;
unsigned int iovlen;
struct smb_ctx sctx, *ctx = &sctx;
struct stat st;
#ifdef APPLE
extern void dropsuid();
extern int loadsmbvfs();
#else
struct xvfsconf vfc;
#endif
char *next, *p, *val;
int opt, error, mntflags, caseopt, fd;
uid_t uid;
gid_t gid;
mode_t dir_mode, file_mode;
char errmsg[255] = { 0 };
iov = NULL;
iovlen = 0;
fd = 0;
uid = (uid_t)-1;
gid = (gid_t)-1;
caseopt = 0;
file_mode = 0;
dir_mode = 0;
#ifdef APPLE
dropsuid();
#endif
if (argc == 2) {
if (strcmp(argv[1], "-h") == 0) {
usage();
}
}
if (argc < 3)
usage();
#ifdef APPLE
error = loadsmbvfs();
#else
error = getvfsbyname(smbfs_vfsname, &vfc);
if (error) {
if (kldload(smbfs_vfsname) < 0)
err(EX_OSERR, "kldload(%s)", smbfs_vfsname);
error = getvfsbyname(smbfs_vfsname, &vfc);
}
#endif
if (error)
errx(EX_OSERR, "SMB filesystem is not available");
if (smb_lib_init() != 0)
exit(1);
mntflags = error = 0;
caseopt = SMB_CS_NONE;
if (smb_ctx_init(ctx, argc, argv, SMBL_SHARE, SMBL_SHARE, SMB_ST_DISK) != 0)
exit(1);
if (smb_ctx_readrc(ctx) != 0)
exit(1);
if (smb_rc)
rc_close(smb_rc);
while ((opt = getopt(argc, argv, STDPARAM_OPT"c:d:f:g:l:n:o:u:w:")) != -1) {
switch (opt) {
case STDPARAM_ARGS:
error = smb_ctx_opt(ctx, opt, optarg);
if (error)
exit(1);
break;
case 'u': {
struct passwd *pwd;
pwd = isdigit(optarg[0]) ?
getpwuid(atoi(optarg)) : getpwnam(optarg);
if (pwd == NULL)
errx(EX_NOUSER, "unknown user '%s'", optarg);
uid = pwd->pw_uid;
break;
}
case 'g': {
struct group *grp;
grp = isdigit(optarg[0]) ?
getgrgid(atoi(optarg)) : getgrnam(optarg);
if (grp == NULL)
errx(EX_NOUSER, "unknown group '%s'", optarg);
gid = grp->gr_gid;
break;
}
case 'd':
errno = 0;
dir_mode = strtol(optarg, &next, 8);
if (errno || *next != 0)
errx(EX_DATAERR, "invalid value for directory mode");
break;
case 'f':
errno = 0;
file_mode = strtol(optarg, &next, 8);
if (errno || *next != 0)
errx(EX_DATAERR, "invalid value for file mode");
break;
case '?':
usage();
/*NOTREACHED*/
case 'n': {
char *inp, *nsp;
nsp = inp = optarg;
while ((nsp = strsep(&inp, ",;:")) != NULL) {
if (strcasecmp(nsp, "LONG") == 0) {
build_iovec(&iov, &iovlen,
"nolong", NULL, 0);
} else {
errx(EX_DATAERR,
"unknown suboption '%s'", nsp);
}
}
break;
};
case 'o':
getmntopts(optarg, mopts, &mntflags, 0);
p = strchr(optarg, '=');
val = NULL;
if (p != NULL) {
*p = '\0';
val = p + 1;
}
build_iovec(&iov, &iovlen, optarg, val, (size_t)-1);
break;
case 'c':
switch (optarg[0]) {
case 'l':
caseopt |= SMB_CS_LOWER;
break;
case 'u':
caseopt |= SMB_CS_UPPER;
break;
default:
errx(EX_DATAERR, "invalid suboption '%c' for -c",
optarg[0]);
}
break;
default:
usage();
}
}
if (optind == argc - 2)
optind++;
if (optind != argc - 1)
usage();
realpath(argv[optind], mount_point);
if (stat(mount_point, &st) == -1)
err(EX_OSERR, "could not find mount point %s", mount_point);
if (!S_ISDIR(st.st_mode)) {
errno = ENOTDIR;
err(EX_OSERR, "can't mount on %s", mount_point);
}
/*
if (smb_getextattr(mount_point, &einfo) == 0)
errx(EX_OSERR, "can't mount on %s twice", mount_point);
*/
if (uid == (uid_t)-1)
uid = st.st_uid;
if (gid == (gid_t)-1)
gid = st.st_gid;
if (file_mode == 0 )
file_mode = st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
if (dir_mode == 0) {
dir_mode = file_mode;
if (dir_mode & S_IRUSR)
dir_mode |= S_IXUSR;
if (dir_mode & S_IRGRP)
dir_mode |= S_IXGRP;
if (dir_mode & S_IROTH)
dir_mode |= S_IXOTH;
}
/*
* For now, let connection be private for this mount
*/
ctx->ct_ssn.ioc_opt |= SMBVOPT_PRIVATE;
ctx->ct_ssn.ioc_owner = ctx->ct_sh.ioc_owner = 0; /* root */
ctx->ct_ssn.ioc_group = ctx->ct_sh.ioc_group = gid;
opt = 0;
if (dir_mode & S_IXGRP)
opt |= SMBM_EXECGRP;
if (dir_mode & S_IXOTH)
opt |= SMBM_EXECOTH;
ctx->ct_ssn.ioc_rights |= opt;
ctx->ct_sh.ioc_rights |= opt;
error = smb_ctx_resolve(ctx);
if (error)
exit(1);
error = smb_ctx_lookup(ctx, SMBL_SHARE, SMBLK_CREATE);
if (error) {
exit(1);
}
fd = ctx->ct_fd;
build_iovec(&iov, &iovlen, "fstype", strdup("smbfs"), -1);
build_iovec(&iov, &iovlen, "fspath", mount_point, -1);
build_iovec_argf(&iov, &iovlen, "fd", "%d", fd);
build_iovec(&iov, &iovlen, "mountpoint", mount_point, -1);
build_iovec_argf(&iov, &iovlen, "uid", "%d", uid);
build_iovec_argf(&iov, &iovlen, "gid", "%d", gid);
build_iovec_argf(&iov, &iovlen, "file_mode", "%d", file_mode);
build_iovec_argf(&iov, &iovlen, "dir_mode", "%d", dir_mode);
build_iovec_argf(&iov, &iovlen, "caseopt", "%d", caseopt);
build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof errmsg);
error = nmount(iov, iovlen, mntflags);
smb_ctx_done(ctx);
if (error) {
smb_error("mount error: %s %s", error, mount_point, errmsg);
exit(1);
}
return 0;
}
static void
usage(void)
{
fprintf(stderr, "%s\n%s\n%s\n%s\n",
"usage: mount_smbfs [-E cs1:cs2] [-I host] [-L locale] [-M crights:srights]",
" [-N] [-O cowner:cgroup/sowner:sgroup] [-R retrycount]",
" [-T timeout] [-W workgroup] [-c case] [-d mode] [-f mode]",
" [-g gid] [-n opt] [-u uid] [-U username] //user@server/share node");
exit (1);
}