dist/smbfs/mount_smbfs/mount_smbfs.c

   1 /* $NetBSD: mount_smbfs.c,v 1.10 2009/09/04 18:22:37 pooka Exp $ */
   2
   3 /*
   4  * Copyright (c) 2000-2002, Boris Popov
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *    This product includes software developed by Boris Popov.
  18  * 4. Neither the name of the author nor the names of any co-contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * from: Id: mount_smbfs.c,v 1.17 2002/04/10 04:17:51 bp Exp
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __RCSID("$NetBSD: mount_smbfs.c,v 1.10 2009/09/04 18:22:37 pooka Exp $");
  39
  40 #include <sys/param.h>
  41 #include <sys/stat.h>
  42 #include <sys/errno.h>
  43 #include <sys/mount.h>
  44
  45 #include <stdio.h>
  46 #include <string.h>
  47 #include <pwd.h>
  48 #include <grp.h>
  49 #include <unistd.h>
  50 #include <ctype.h>
  51 #include <stdlib.h>
  52 #include <err.h>
  53 #include <sysexits.h>
  54 #include <errno.h>
  55
  56 #include <cflib.h>
  57
  58 #include <netsmb/smb.h>
  59 #include <netsmb/smb_conn.h>
  60 #include <netsmb/smb_lib.h>
  61
  62 #include <fs/smbfs/smbfs.h>
  63
  64 #include "mount_smbfs.h"
  65
  66 #include "mntopts.h"
  67
  68 static void usage(void);
  69
  70 static const struct mntopt mopts[] = {
  71         MOPT_STDOPTS,
  72         { NULL, 0, 0, 0 }
  73 };
  74
  75 #ifndef MOUNT_NOMAIN
  76 int
  77 main(int argc, char *argv[])
  78 {
  79
  80         setprogname(argv[0]);
  81         return mount_smbfs(argc, argv);
  82 }
  83 #endif
  84
  85 struct smb_ctx sctx;
  86 void
  87 mount_smbfs_parseargs(int argc, char *argv[], struct smbfs_args *mdatap,
  88         int *mntflagsp, char *canon_dev, char *mount_point)
  89 {
  90         struct smb_ctx *ctx = &sctx;
  91         struct stat st;
  92         char *next;
  93         int opt, error, caseopt;
  94
  95         if (argc == 2) {
  96                 if (strcmp(argv[1], "-h") == 0) {
  97                         usage();
  98                 } else if (strcmp(argv[1], "-v") == 0) {
  99                         errx(EX_OK, "version %d.%d.%d", SMBFS_VERSION / 100000,
 100                             (SMBFS_VERSION % 10000) / 1000,
 101                             (SMBFS_VERSION % 1000) / 100);
 102                 }
 103         }
 104         if (argc < 3)
 105                 usage();
 106
 107         if (smb_lib_init() != 0)
 108                 exit(1);
 109
 110         *mntflagsp = error = 0;
 111         memset(mdatap, 0, sizeof(*mdatap));
 112         mdatap->uid = mdatap->gid = -1;
 113         caseopt = SMB_CS_NONE;
 114
 115         if (smb_ctx_init(ctx, argc, argv, SMBL_SHARE, SMBL_SHARE, SMB_ST_DISK) != 0)
 116                 exit(1);
 117         if (smb_ctx_readrc(ctx) != 0)
 118                 exit(1);
 119         if (smb_rc)
 120                 rc_close(smb_rc);
 121
 122         while ((opt = getopt(argc, argv, STDPARAM_OPT"c:d:f:g:l:n:o:u:w:")) != -1) {
 123                 switch (opt) {
 124                     case STDPARAM_ARGS:
 125                         error = smb_ctx_opt(ctx, opt, optarg);
 126                         if (error)
 127                                 exit(1);
 128                         break;
 129                     case 'u': {
 130                         struct passwd *pwd;
 131
 132                         pwd = isdigit((unsigned char)optarg[0]) ?
 133                             getpwuid(atoi(optarg)) : getpwnam(optarg);
 134                         if (pwd == NULL)
 135                                 errx(EX_NOUSER, "unknown user '%s'", optarg);
 136                         mdatap->uid = pwd->pw_uid;
 137                         break;
 138                     }
 139                     case 'g': {
 140                         struct group *grp;
 141
 142                         grp = isdigit((unsigned char)optarg[0]) ?
 143                             getgrgid(atoi(optarg)) : getgrnam(optarg);
 144                         if (grp == NULL)
 145                                 errx(EX_NOUSER, "unknown group '%s'", optarg);
 146                         mdatap->gid = grp->gr_gid;
 147                         break;
 148                     }
 149                     case 'd':
 150                         errno = 0;
 151                         mdatap->dir_mode = strtol(optarg, &next, 8);
 152                         if (errno || *next != 0)
 153                                 errx(EX_DATAERR, "invalid value for directory mode");
 154                         break;
 155                     case 'f':
 156                         errno = 0;
 157                         mdatap->file_mode = strtol(optarg, &next, 8);
 158                         if (errno || *next != 0)
 159                                 errx(EX_DATAERR, "invalid value for file mode");
 160                         break;
 161                     case '?':
 162                         usage();
 163                         /*NOTREACHED*/
 164                     case 'n': {
 165                         char *inp, *nsp;
 166
 167                         nsp = inp = optarg;
 168                         while ((nsp = strsep(&inp, ",;:")) != NULL) {
 169                                 if (strcasecmp(nsp, "LONG") == 0)
 170                                         mdatap->flags |= SMBFS_MOUNT_NO_LONG;
 171                                 else
 172                                         errx(EX_DATAERR, "unknown suboption '%s'", nsp);
 173                         }
 174                         break;
 175                     };
 176                     case 'o':
 177                         getmntopts(optarg, mopts, mntflagsp, 0);
 178                         break;
 179                     case 'c':
 180                         switch (optarg[0]) {
 181                             case 'l':
 182                                 caseopt |= SMB_CS_LOWER;
 183                                 break;
 184                             case 'u':
 185                                 caseopt |= SMB_CS_UPPER;
 186                                 break;
 187                             default:
 188                                 errx(EX_DATAERR, "invalid suboption '%c' for -c",
 189                                     optarg[0]);
 190                         }
 191                         break;
 192                     default:
 193                         usage();
 194                 }
 195         }
 196
 197         if (optind == argc - 2)
 198                 optind++;
 199
 200         if (optind != argc - 1)
 201                 usage();
 202         realpath(argv[optind], mount_point);
 203
 204         if (stat(mount_point, &st) == -1)
 205                 err(EX_OSERR, "could not find mount point %s", mount_point);
 206         if (!S_ISDIR(st.st_mode)) {
 207                 errno = ENOTDIR;
 208                 err(EX_OSERR, "can't mount on %s", mount_point);
 209         }
 210 /*
 211         if (smb_getextattr(mount_point, &einfo) == 0)
 212                 errx(EX_OSERR, "can't mount on %s twice", mount_point);
 213 */
 214         if (mdatap->uid == (uid_t)-1)
 215                 mdatap->uid = st.st_uid;
 216         if (mdatap->gid == (gid_t)-1)
 217                 mdatap->gid = st.st_gid;
 218         if (mdatap->file_mode == 0 )
 219                 mdatap->file_mode = st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
 220         if (mdatap->dir_mode == 0) {
 221                 mdatap->dir_mode = mdatap->file_mode;
 222                 if (mdatap->dir_mode & S_IRUSR)
 223                         mdatap->dir_mode |= S_IXUSR;
 224                 if (mdatap->dir_mode & S_IRGRP)
 225                         mdatap->dir_mode |= S_IXGRP;
 226                 if (mdatap->dir_mode & S_IROTH)
 227                         mdatap->dir_mode |= S_IXOTH;
 228         }
 229         /*
 230          * For now, let connection be private for this mount
 231          */
 232         ctx->ct_ssn.ioc_opt |= SMBVOPT_PRIVATE;
 233         if (getuid() == 0)
 234                 ctx->ct_ssn.ioc_owner = ctx->ct_sh.ioc_owner = 0; /* root */
 235         else
 236                 ctx->ct_ssn.ioc_owner = ctx->ct_sh.ioc_owner = mdatap->uid;
 237         ctx->ct_ssn.ioc_group = ctx->ct_sh.ioc_group = mdatap->gid;
 238         opt = 0;
 239         if (mdatap->dir_mode & S_IXGRP)
 240                 opt |= SMBM_EXECGRP;
 241         if (mdatap->dir_mode & S_IXOTH)
 242                 opt |= SMBM_EXECOTH;
 243         ctx->ct_ssn.ioc_rights |= opt;
 244         ctx->ct_sh.ioc_rights |= opt;
 245         error = smb_ctx_resolve(ctx);
 246         if (error)
 247                 err(1, "resolve %d", error);
 248         error = smb_ctx_lookup(ctx, SMBL_SHARE, SMBLK_CREATE);
 249         if (error) {
 250                 err(1, "lookup %d", error);
 251         }
 252         mdatap->version = SMBFS_VERSION;
 253         mdatap->dev_fd = ctx->ct_fd;
 254         mdatap->caseopt = caseopt;
 255
 256         snprintf(canon_dev, MAXPATHLEN, "//%s@%s/%s",
 257             ctx->ct_ssn.ioc_user[0] ? ctx->ct_ssn.ioc_user : "guest",
 258             ctx->ct_ssn.ioc_srvname, ctx->ct_sh.ioc_share);
 259 }
 260
 261 int
 262 mount_smbfs(int argc, char *argv[])
 263 {
 264         char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
 265         struct smbfs_args mdata;
 266         int mntflags, error;
 267
 268         mount_smbfs_parseargs(argc, argv, &mdata, &mntflags,
 269             canon_dev, canon_dir);
 270
 271         error = mount(SMBFS_VFSNAME, canon_dir, mntflags,
 272             &mdata, sizeof mdata);
 273         smb_ctx_done(&sctx); /* XXX */
 274
 275         if (error) {
 276                 smb_error("mount error for %s: %s", error, canon_dir,
 277                         strerror(errno));
 278                 exit(1);
 279         }
 280         return 0;
 281 }
 282
 283 static void
 284 usage(void)
 285 {
 286         fprintf(stderr, "%s\n%s\n%s\n%s\n",
 287         "usage: mount_smbfs [-E cs1:cs2] [-I host] [-L locale] [-M crights:srights]",
 288         "                   [-N] [-O cowner:cgroup/sowner:sgroup] [-R retrycount]",
 289         "                   [-T timeout] [-W workgroup] [-c case] [-d mode] [-f mode]",
 290         "                   [-g gid] [-n opt] [-u uid] //user@server/share node");
 291
 292         exit (1);
 293 }