contrib/smbfs/mount_smbfs/mount_smbfs.c

   1 /*
   2  * Copyright (c) 2000-2002, Boris Popov
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *    This product includes software developed by Boris Popov.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $Id: mount_smbfs.c,v 1.17 2002/04/10 04:17:51 bp Exp $
  33  */
  34 #include <sys/param.h>
  35 #include <sys/stat.h>
  36 #include <sys/errno.h>
  37 #include <sys/mount.h>
  38
  39 #include <stdio.h>
  40 #include <string.h>
  41 #include <pwd.h>
  42 #include <grp.h>
  43 #include <unistd.h>
  44 #include <ctype.h>
  45 #include <stdlib.h>
  46 #include <err.h>
  47 #include <sysexits.h>
  48
  49 #include <cflib.h>
  50
  51 #include <netsmb/smb.h>
  52 #include <netsmb/smb_conn.h>
  53 #include <netsmb/smb_lib.h>
  54
  55 #include <fs/smbfs/smbfs.h>
  56
  57 #include "mntopts.h"
  58
  59 static char mount_point[MAXPATHLEN + 1];
  60 static void usage(void);
  61
  62 static struct mntopt mopts[] = {
  63         MOPT_STDOPTS,
  64         { NULL, 0, 0, 0 }
  65 };
  66
  67
  68 int
  69 main(int argc, char *argv[])
  70 {
  71         struct smb_ctx sctx, *ctx = &sctx;
  72         struct smbfs_args mdata;
  73         struct stat st;
  74 #ifdef APPLE
  75         extern void dropsuid();
  76         extern int loadsmbvfs();
  77 #else
  78         struct vfsconf vfc;
  79 #endif /* APPLE */
  80         char *next;
  81         int opt, error, mntflags, caseopt;
  82
  83
  84 #ifdef APPLE
  85         dropsuid();
  86 #endif /* APPLE */
  87         if (argc == 2) {
  88                 if (strcmp(argv[1], "-h") == 0) {
  89                         usage();
  90                 } else if (strcmp(argv[1], "-v") == 0) {
  91                         errx(EX_OK, "version %d.%d.%d", SMBFS_VERSION / 100000,
  92                             (SMBFS_VERSION % 10000) / 1000,
  93                             (SMBFS_VERSION % 1000) / 100);
  94                 }
  95         }
  96         if (argc < 3)
  97                 usage();
  98
  99 #ifdef APPLE
 100         error = loadsmbvfs();
 101 #else
 102         error = getvfsbyname(SMBFS_VFSNAME, &vfc);
 103         if (error && vfsisloadable(SMBFS_VFSNAME)) {
 104                 if(vfsload(SMBFS_VFSNAME))
 105                         err(EX_OSERR, "vfsload("SMBFS_VFSNAME")");
 106                 endvfsent();
 107                 error = getvfsbyname(SMBFS_VFSNAME, &vfc);
 108         }
 109 #endif /* APPLE */
 110         if (error)
 111                 errx(EX_OSERR, "SMB filesystem is not available");
 112
 113         if (smb_lib_init() != 0)
 114                 exit(1);
 115
 116         mntflags = error = 0;
 117         bzero(&mdata, sizeof(mdata));
 118         mdata.uid = mdata.gid = -1;
 119         caseopt = SMB_CS_NONE;
 120
 121         if (smb_ctx_init(ctx, argc, argv, SMBL_SHARE, SMBL_SHARE, SMB_ST_DISK) != 0)
 122                 exit(1);
 123         if (smb_ctx_readrc(ctx) != 0)
 124                 exit(1);
 125         if (smb_rc)
 126                 rc_close(smb_rc);
 127
 128         while ((opt = getopt(argc, argv, STDPARAM_OPT"c:d:f:g:l:n:o:u:w:")) != -1) {
 129                 switch (opt) {
 130                     case STDPARAM_ARGS:
 131                         error = smb_ctx_opt(ctx, opt, optarg);
 132                         if (error)
 133                                 exit(1);
 134                         break;
 135                     case 'u': {
 136                         struct passwd *pwd;
 137
 138                         pwd = isdigit(optarg[0]) ?
 139                             getpwuid(atoi(optarg)) : getpwnam(optarg);
 140                         if (pwd == NULL)
 141                                 errx(EX_NOUSER, "unknown user '%s'", optarg);
 142                         mdata.uid = pwd->pw_uid;
 143                         break;
 144                     }
 145                     case 'g': {
 146                         struct group *grp;
 147
 148                         grp = isdigit(optarg[0]) ?
 149                             getgrgid(atoi(optarg)) : getgrnam(optarg);
 150                         if (grp == NULL)
 151                                 errx(EX_NOUSER, "unknown group '%s'", optarg);
 152                         mdata.gid = grp->gr_gid;
 153                         break;
 154                     }
 155                     case 'd':
 156                         errno = 0;
 157                         mdata.dir_mode = strtol(optarg, &next, 8);
 158                         if (errno || *next != 0)
 159                                 errx(EX_DATAERR, "invalid value for directory mode");
 160                         break;
 161                     case 'f':
 162                         errno = 0;
 163                         mdata.file_mode = strtol(optarg, &next, 8);
 164                         if (errno || *next != 0)
 165                                 errx(EX_DATAERR, "invalid value for file mode");
 166                         break;
 167                     case '?':
 168                         usage();
 169                         /*NOTREACHED*/
 170                     case 'n': {
 171                         char *inp, *nsp;
 172
 173                         nsp = inp = optarg;
 174                         while ((nsp = strsep(&inp, ",;:")) != NULL) {
 175                                 if (strcasecmp(nsp, "LONG") == 0)
 176                                         mdata.flags |= SMBFS_MOUNT_NO_LONG;
 177                                 else
 178                                         errx(EX_DATAERR, "unknown suboption '%s'", nsp);
 179                         }
 180                         break;
 181                     };
 182                     case 'o':
 183                         getmntopts(optarg, mopts, &mntflags, 0);
 184                         break;
 185                     case 'c':
 186                         switch (optarg[0]) {
 187                             case 'l':
 188                                 caseopt |= SMB_CS_LOWER;
 189                                 break;
 190                             case 'u':
 191                                 caseopt |= SMB_CS_UPPER;
 192                                 break;
 193                             default:
 194                                 errx(EX_DATAERR, "invalid suboption '%c' for -c",
 195                                     optarg[0]);
 196                         }
 197                         break;
 198                     default:
 199                         usage();
 200                 }
 201         }
 202
 203         if (optind == argc - 2)
 204                 optind++;
 205
 206         if (optind != argc - 1)
 207                 usage();
 208         realpath(argv[optind], mount_point);
 209
 210         if (stat(mount_point, &st) == -1)
 211                 err(EX_OSERR, "could not find mount point %s", mount_point);
 212         if (!S_ISDIR(st.st_mode)) {
 213                 errno = ENOTDIR;
 214                 err(EX_OSERR, "can't mount on %s", mount_point);
 215         }
 216 /*
 217         if (smb_getextattr(mount_point, &einfo) == 0)
 218                 errx(EX_OSERR, "can't mount on %s twice", mount_point);
 219 */
 220         if (mdata.uid == (uid_t)-1)
 221                 mdata.uid = st.st_uid;
 222         if (mdata.gid == (gid_t)-1)
 223                 mdata.gid = st.st_gid;
 224         if (mdata.file_mode == 0 )
 225                 mdata.file_mode = st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
 226         if (mdata.dir_mode == 0) {
 227                 mdata.dir_mode = mdata.file_mode;
 228                 if (mdata.dir_mode & S_IRUSR)
 229                         mdata.dir_mode |= S_IXUSR;
 230                 if (mdata.dir_mode & S_IRGRP)
 231                         mdata.dir_mode |= S_IXGRP;
 232                 if (mdata.dir_mode & S_IROTH)
 233                         mdata.dir_mode |= S_IXOTH;
 234         }
 235         /*
 236          * For now, let connection be private for this mount
 237          */
 238         ctx->ct_ssn.ioc_opt |= SMBVOPT_PRIVATE;
 239         ctx->ct_ssn.ioc_owner = ctx->ct_sh.ioc_owner = 0; /* root */
 240         ctx->ct_ssn.ioc_group = ctx->ct_sh.ioc_group = mdata.gid;
 241         opt = 0;
 242         if (mdata.dir_mode & S_IXGRP)
 243                 opt |= SMBM_EXECGRP;
 244         if (mdata.dir_mode & S_IXOTH)
 245                 opt |= SMBM_EXECOTH;
 246         ctx->ct_ssn.ioc_rights |= opt;
 247         ctx->ct_sh.ioc_rights |= opt;
 248         error = smb_ctx_resolve(ctx);
 249         if (error)
 250                 exit(1);
 251         error = smb_ctx_lookup(ctx, SMBL_SHARE, SMBLK_CREATE);
 252         if (error) {
 253                 exit(1);
 254         }
 255         strcpy(mdata.mount_point,mount_point);
 256         mdata.version = SMBFS_VERSION;
 257         mdata.dev = ctx->ct_fd;
 258         mdata.caseopt = caseopt;
 259         error = mount(SMBFS_VFSNAME, mdata.mount_point, mntflags, (void*)&mdata);
 260         smb_ctx_done(ctx);
 261         if (error) {
 262                 smb_error("mount error: %s", error, mdata.mount_point);
 263                 exit(1);
 264         }
 265         return 0;
 266 }
 267
 268 static void
 269 usage(void)
 270 {
 271         fprintf(stderr, "%s\n%s\n%s\n%s\n",
 272         "usage: mount_smbfs [-E cs1:cs2] [-I host] [-L locale] [-M crights:srights]",
 273         "                   [-N] [-O cowner:cgroup/sowner:sgroup] [-R retrycount]",
 274         "                   [-T timeout] [-W workgroup] [-c case] [-d mode] [-f mode]",
 275         "                   [-g gid] [-n opt] [-u uid] //user@server/share node");
 276
 277         exit (1);
 278 }