Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 2 | /* |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 3 | * Mini mount implementation for busybox |
| 4 | * |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 5 | * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>. |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | * |
| 21 | * 3/21/1999 Charles P. Wright <cpwright@cpwright.com> |
| 22 | * searches through fstab when -a is passed |
| 23 | * will try mounting stuff with all fses when passed -t auto |
| 24 | * |
| 25 | * 1999-04-17 Dave Cinege...Rewrote -t auto. Fixed ro mtab. |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 26 | * |
| 27 | * 1999-10-07 Erik Andersen <andersen@lineo.com>, <andersee@debian.org>. |
Erik Andersen | 3163821 | 2000-01-15 22:28:50 +0000 | [diff] [blame] | 28 | * Rewrite of a lot of code. Removed mtab usage (I plan on |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 29 | * putting it back as a compile-time option some time), |
| 30 | * major adjustments to option parsing, and some serious |
| 31 | * dieting all around. |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 32 | * |
Erik Andersen | 3163821 | 2000-01-15 22:28:50 +0000 | [diff] [blame] | 33 | * 1999-11-06 mtab suppport is back - andersee |
| 34 | * |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 35 | * 2000-01-12 Ben Collins <bcollins@debian.org>, Borrowed utils-linux's |
| 36 | * mount to add loop support. |
| 37 | */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 38 | |
| 39 | #include "internal.h" |
| 40 | #include <stdlib.h> |
| 41 | #include <unistd.h> |
| 42 | #include <errno.h> |
| 43 | #include <string.h> |
| 44 | #include <stdio.h> |
| 45 | #include <mntent.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 46 | #include <ctype.h> |
Erik Andersen | 269bba2 | 2000-03-08 14:50:47 +0000 | [diff] [blame] | 47 | #if defined BB_FEATURE_USE_DEVPS_PATCH |
Eric Andersen | c674d70 | 2000-07-10 22:57:14 +0000 | [diff] [blame] | 48 | #include <linux/devmtab.h> /* For Erik's nifty devmtab device driver */ |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 49 | #endif |
Eric Andersen | bd22ed8 | 2000-07-08 18:55:24 +0000 | [diff] [blame] | 50 | |
Eric Andersen | a57ba4d | 2000-07-08 19:20:49 +0000 | [diff] [blame] | 51 | |
| 52 | #define MS_MGC_VAL 0xc0ed0000 /* Magic number indicatng "new" flags */ |
| 53 | #define MS_RDONLY 1 /* Mount read-only */ |
| 54 | #define MS_NOSUID 2 /* Ignore suid and sgid bits */ |
| 55 | #define MS_NODEV 4 /* Disallow access to device special files */ |
| 56 | #define MS_NOEXEC 8 /* Disallow program execution */ |
| 57 | #define MS_SYNCHRONOUS 16 /* Writes are synced at once */ |
| 58 | #define MS_REMOUNT 32 /* Alter flags of a mounted FS */ |
| 59 | #define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */ |
| 60 | #define S_QUOTA 128 /* Quota initialized for file/directory/symlink */ |
| 61 | #define S_APPEND 256 /* Append-only file */ |
| 62 | #define S_IMMUTABLE 512 /* Immutable file */ |
| 63 | #define MS_NOATIME 1024 /* Do not update access times. */ |
Eric Andersen | bd22ed8 | 2000-07-08 18:55:24 +0000 | [diff] [blame] | 64 | #define MS_NODIRATIME 2048 /* Do not update directory access times */ |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 65 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 66 | |
Eric Andersen | bd22ed8 | 2000-07-08 18:55:24 +0000 | [diff] [blame] | 67 | |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 68 | #if defined BB_FEATURE_MOUNT_LOOP |
| 69 | #include <fcntl.h> |
| 70 | #include <sys/ioctl.h> |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 71 | static int use_loop = FALSE; |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 72 | #endif |
| 73 | |
Eric Andersen | a57ba4d | 2000-07-08 19:20:49 +0000 | [diff] [blame] | 74 | extern int mount (__const char *__special_file, __const char *__dir, |
| 75 | __const char *__fstype, unsigned long int __rwflag, |
| 76 | __const void *__data); |
| 77 | extern int umount (__const char *__special_file); |
| 78 | extern int umount2 (__const char *__special_file, int __flags); |
| 79 | |
| 80 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 81 | extern const char mtab_file[]; /* Defined in utility.c */ |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 82 | |
Erik Andersen | 7ab9c7e | 2000-05-12 19:41:47 +0000 | [diff] [blame] | 83 | static const char mount_usage[] = |
| 84 | "mount [flags] device directory [-o options,more-options]\n" |
| 85 | #ifndef BB_FEATURE_TRIVIAL_HELP |
| 86 | "\nMount a filesystem\n\n" |
| 87 | "Flags:\n" |
| 88 | "\t-a:\t\tMount all filesystems in fstab.\n" |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 89 | #ifdef BB_MTAB |
Erik Andersen | 6c5f2c6 | 2000-05-05 19:49:33 +0000 | [diff] [blame] | 90 | "\t-f:\t\t\"Fake\" mount. Add entry to mount table but don't mount it.\n" |
| 91 | "\t-n:\t\tDon't write a mount table entry.\n" |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 92 | #endif |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 93 | "\t-o option:\tOne of many filesystem options, listed below.\n" |
Erik Andersen | 6c5f2c6 | 2000-05-05 19:49:33 +0000 | [diff] [blame] | 94 | "\t-r:\t\tMount the filesystem read-only.\n" |
| 95 | "\t-t fs-type:\tSpecify the filesystem type.\n" |
| 96 | "\t-w:\t\tMount for reading and writing (default).\n" |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 97 | "\n" |
| 98 | "Options for use with the \"-o\" flag:\n" |
Erik Andersen | 6c5f2c6 | 2000-05-05 19:49:33 +0000 | [diff] [blame] | 99 | "\tasync/sync:\tWrites are asynchronous / synchronous.\n" |
| 100 | "\tatime/noatime:\tEnable / disable updates to inode access times.\n" |
| 101 | "\tdev/nodev:\tAllow use of special device files / disallow them.\n" |
| 102 | "\texec/noexec:\tAllow use of executable files / disallow them.\n" |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 103 | #if defined BB_FEATURE_MOUNT_LOOP |
Erik Andersen | 6c5f2c6 | 2000-05-05 19:49:33 +0000 | [diff] [blame] | 104 | "\tloop:\t\tMounts a file via loop device.\n" |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 105 | #endif |
Erik Andersen | 6c5f2c6 | 2000-05-05 19:49:33 +0000 | [diff] [blame] | 106 | "\tsuid/nosuid:\tAllow set-user-id-root programs / disallow them.\n" |
| 107 | "\tremount:\tRe-mount a currently-mounted filesystem, changing its flags.\n" |
| 108 | "\tro/rw:\t\tMount for read-only / read-write.\n" |
Erik Andersen | 7ab9c7e | 2000-05-12 19:41:47 +0000 | [diff] [blame] | 109 | "\nThere are EVEN MORE flags that are specific to each filesystem.\n" |
| 110 | "You'll have to see the written documentation for those.\n" |
| 111 | #endif |
| 112 | ; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 113 | |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 114 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 115 | struct mount_options { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 116 | const char *name; |
| 117 | unsigned long and; |
| 118 | unsigned long or; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 119 | }; |
| 120 | |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 121 | static const struct mount_options mount_options[] = { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 122 | {"async", ~MS_SYNCHRONOUS, 0}, |
Erik Andersen | 6c5f2c6 | 2000-05-05 19:49:33 +0000 | [diff] [blame] | 123 | {"atime", ~0, ~MS_NOATIME}, |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 124 | {"defaults", ~0, 0}, |
| 125 | {"dev", ~MS_NODEV, 0}, |
Erik Andersen | 6c5f2c6 | 2000-05-05 19:49:33 +0000 | [diff] [blame] | 126 | {"diratime", ~0, ~MS_NODIRATIME}, |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 127 | {"exec", ~MS_NOEXEC, 0}, |
Erik Andersen | 6c5f2c6 | 2000-05-05 19:49:33 +0000 | [diff] [blame] | 128 | {"noatime", ~0, MS_NOATIME}, |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 129 | {"nodev", ~0, MS_NODEV}, |
Erik Andersen | 6c5f2c6 | 2000-05-05 19:49:33 +0000 | [diff] [blame] | 130 | {"nodiratime", ~0, MS_NODIRATIME}, |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 131 | {"noexec", ~0, MS_NOEXEC}, |
| 132 | {"nosuid", ~0, MS_NOSUID}, |
| 133 | {"remount", ~0, MS_REMOUNT}, |
| 134 | {"ro", ~0, MS_RDONLY}, |
| 135 | {"rw", ~MS_RDONLY, 0}, |
| 136 | {"suid", ~MS_NOSUID, 0}, |
| 137 | {"sync", ~0, MS_SYNCHRONOUS}, |
| 138 | {0, 0, 0} |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 139 | }; |
| 140 | |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 141 | static int |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 142 | do_mount(char *specialfile, char *dir, char *filesystemtype, |
| 143 | long flags, void *string_flags, int useMtab, int fakeIt, |
| 144 | char *mtab_opts) |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 145 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 146 | int status = 0; |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 147 | char *lofile = NULL; |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 148 | |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 149 | #if defined BB_MTAB |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 150 | if (fakeIt == FALSE) |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 151 | #endif |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 152 | { |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 153 | #if defined BB_FEATURE_MOUNT_LOOP |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 154 | if (use_loop==TRUE) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 155 | int loro = flags & MS_RDONLY; |
| 156 | char *lofile = specialfile; |
| 157 | |
| 158 | specialfile = find_unused_loop_device(); |
| 159 | if (specialfile == NULL) { |
Matt Kraai | d537a95 | 2000-07-14 01:51:25 +0000 | [diff] [blame^] | 160 | errorMsg("Could not find a spare loop device\n"); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 161 | return (FALSE); |
| 162 | } |
| 163 | if (set_loop(specialfile, lofile, 0, &loro)) { |
Matt Kraai | d537a95 | 2000-07-14 01:51:25 +0000 | [diff] [blame^] | 164 | errorMsg("Could not setup loop device\n"); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 165 | return (FALSE); |
| 166 | } |
| 167 | if (!(flags & MS_RDONLY) && loro) { /* loop is ro, but wanted rw */ |
Matt Kraai | d537a95 | 2000-07-14 01:51:25 +0000 | [diff] [blame^] | 168 | errorMsg("WARNING: loop device is read-only\n"); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 169 | flags &= ~MS_RDONLY; |
| 170 | } |
| 171 | } |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 172 | #endif |
Eric Andersen | a42982e | 2000-06-07 17:28:53 +0000 | [diff] [blame] | 173 | status = mount(specialfile, dir, filesystemtype, flags, string_flags); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 174 | } |
Erik Andersen | 5cbdd71 | 2000-01-26 20:06:48 +0000 | [diff] [blame] | 175 | |
| 176 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 177 | /* If the mount was sucessful, do anything needed, then return TRUE */ |
| 178 | if (status == 0) { |
Erik Andersen | 5cbdd71 | 2000-01-26 20:06:48 +0000 | [diff] [blame] | 179 | |
| 180 | #if defined BB_MTAB |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 181 | if (useMtab == TRUE) { |
| 182 | write_mtab(specialfile, dir, filesystemtype, flags, mtab_opts); |
| 183 | } |
| 184 | #endif |
| 185 | return (TRUE); |
| 186 | } |
| 187 | |
| 188 | /* Bummer. mount failed. Clean up */ |
| 189 | #if defined BB_FEATURE_MOUNT_LOOP |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 190 | if (lofile != NULL) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 191 | del_loop(specialfile); |
Erik Andersen | 5cbdd71 | 2000-01-26 20:06:48 +0000 | [diff] [blame] | 192 | } |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 193 | #endif |
Eric Andersen | a42982e | 2000-06-07 17:28:53 +0000 | [diff] [blame] | 194 | |
| 195 | if (errno == EPERM) { |
Matt Kraai | be84cd4 | 2000-07-12 17:02:35 +0000 | [diff] [blame] | 196 | fatalError("permission denied. Are you root?\n"); |
Eric Andersen | a42982e | 2000-06-07 17:28:53 +0000 | [diff] [blame] | 197 | } |
| 198 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 199 | return (FALSE); |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 200 | } |
| 201 | |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 202 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 203 | |
Eric Andersen | 8341a15 | 1999-10-08 17:14:14 +0000 | [diff] [blame] | 204 | /* Seperate standard mount options from the nonstandard string options */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 205 | static void |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 206 | parse_mount_options(char *options, unsigned long *flags, char *strflags) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 207 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 208 | while (options) { |
| 209 | int gotone = FALSE; |
| 210 | char *comma = strchr(options, ','); |
| 211 | const struct mount_options *f = mount_options; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 212 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 213 | if (comma) |
| 214 | *comma = '\0'; |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame] | 215 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 216 | while (f->name != 0) { |
| 217 | if (strcasecmp(f->name, options) == 0) { |
| 218 | |
| 219 | *flags &= f->and; |
| 220 | *flags |= f->or; |
| 221 | gotone = TRUE; |
| 222 | break; |
| 223 | } |
| 224 | f++; |
| 225 | } |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 226 | #if defined BB_FEATURE_MOUNT_LOOP |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 227 | if (gotone == FALSE && !strcasecmp("loop", options)) { /* loop device support */ |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 228 | use_loop = TRUE; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 229 | gotone = TRUE; |
| 230 | } |
Erik Andersen | b7cc49d | 2000-01-13 06:38:14 +0000 | [diff] [blame] | 231 | #endif |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 232 | if (*strflags && strflags != '\0' && gotone == FALSE) { |
| 233 | char *temp = strflags; |
| 234 | |
| 235 | temp += strlen(strflags); |
| 236 | *temp++ = ','; |
| 237 | *temp++ = '\0'; |
| 238 | } |
| 239 | if (gotone == FALSE) |
| 240 | strcat(strflags, options); |
| 241 | if (comma) { |
| 242 | *comma = ','; |
| 243 | options = ++comma; |
| 244 | } else { |
| 245 | break; |
| 246 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 247 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | int |
Eric Andersen | d0246fb | 1999-11-04 21:18:07 +0000 | [diff] [blame] | 251 | mount_one(char *blockDevice, char *directory, char *filesystemType, |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 252 | unsigned long flags, char *string_flags, int useMtab, int fakeIt, |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 253 | char *mtab_opts, int whineOnErrors) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 254 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 255 | int status = 0; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 256 | |
Eric Andersen | 0ecb54a | 1999-12-05 23:24:55 +0000 | [diff] [blame] | 257 | #if defined BB_FEATURE_USE_PROCFS |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 258 | char buf[255]; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 259 | if (strcmp(filesystemType, "auto") == 0) { |
| 260 | FILE *f = fopen("/proc/filesystems", "r"); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 261 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 262 | if (f == NULL) |
| 263 | return (FALSE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 264 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 265 | while (fgets(buf, sizeof(buf), f) != NULL) { |
| 266 | filesystemType = buf; |
| 267 | if (*filesystemType == '\t') { // Not a nodev filesystem |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 268 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 269 | // Add NULL termination to each line |
| 270 | while (*filesystemType && *filesystemType != '\n') |
| 271 | filesystemType++; |
| 272 | *filesystemType = '\0'; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 273 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 274 | filesystemType = buf; |
| 275 | filesystemType++; // hop past tab |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 276 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 277 | status = do_mount(blockDevice, directory, filesystemType, |
| 278 | flags | MS_MGC_VAL, string_flags, |
| 279 | useMtab, fakeIt, mtab_opts); |
| 280 | if (status == TRUE) |
| 281 | break; |
| 282 | } |
| 283 | } |
| 284 | fclose(f); |
| 285 | } else |
Eric Andersen | 0ecb54a | 1999-12-05 23:24:55 +0000 | [diff] [blame] | 286 | #endif |
Erik Andersen | 269bba2 | 2000-03-08 14:50:47 +0000 | [diff] [blame] | 287 | #if defined BB_FEATURE_USE_DEVPS_PATCH |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 288 | if (strcmp(filesystemType, "auto") == 0) { |
| 289 | int fd, i, numfilesystems; |
| 290 | char device[] = "/dev/mtab"; |
| 291 | struct k_fstype *fslist; |
| 292 | |
| 293 | /* open device */ |
| 294 | fd = open(device, O_RDONLY); |
| 295 | if (fd < 0) |
| 296 | fatalError("open failed for `%s': %s\n", device, strerror (errno)); |
| 297 | |
| 298 | /* How many filesystems? We need to know to allocate enough space */ |
| 299 | numfilesystems = ioctl (fd, DEVMTAB_COUNT_FILESYSTEMS); |
| 300 | if (numfilesystems<0) |
| 301 | fatalError("\nDEVMTAB_COUNT_FILESYSTEMS: %s\n", strerror (errno)); |
| 302 | fslist = (struct k_fstype *) calloc ( numfilesystems, sizeof(struct k_fstype)); |
| 303 | |
| 304 | /* Grab the list of available filesystems */ |
| 305 | status = ioctl (fd, DEVMTAB_GET_FILESYSTEMS, fslist); |
| 306 | if (status<0) |
| 307 | fatalError("\nDEVMTAB_GET_FILESYSTEMS: %s\n", strerror (errno)); |
| 308 | |
| 309 | /* Walk the list trying to mount filesystems |
| 310 | * that do not claim to be nodev filesystems */ |
| 311 | for( i = 0 ; i < numfilesystems ; i++) { |
| 312 | if (fslist[i].mnt_nodev) |
| 313 | continue; |
| 314 | status = do_mount(blockDevice, directory, fslist[i].mnt_type, |
| 315 | flags | MS_MGC_VAL, string_flags, |
| 316 | useMtab, fakeIt, mtab_opts); |
| 317 | if (status == TRUE) |
| 318 | break; |
| 319 | } |
| 320 | free( fslist); |
| 321 | close(fd); |
| 322 | } else |
| 323 | #endif |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 324 | { |
| 325 | status = do_mount(blockDevice, directory, filesystemType, |
| 326 | flags | MS_MGC_VAL, string_flags, useMtab, |
| 327 | fakeIt, mtab_opts); |
| 328 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 329 | |
Eric Andersen | a42982e | 2000-06-07 17:28:53 +0000 | [diff] [blame] | 330 | if (status == FALSE) { |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 331 | if (whineOnErrors == TRUE) { |
Matt Kraai | d537a95 | 2000-07-14 01:51:25 +0000 | [diff] [blame^] | 332 | errorMsg("Mounting %s on %s failed: %s\n", |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 333 | blockDevice, directory, strerror(errno)); |
| 334 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 335 | return (FALSE); |
| 336 | } |
| 337 | return (TRUE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 338 | } |
| 339 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 340 | extern int mount_main(int argc, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 341 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 342 | char string_flags_buf[1024] = ""; |
| 343 | char *string_flags = string_flags_buf; |
| 344 | char *extra_opts = string_flags_buf; |
| 345 | unsigned long flags = 0; |
| 346 | char *filesystemType = "auto"; |
| 347 | char *device = NULL; |
| 348 | char *directory = NULL; |
| 349 | int all = FALSE; |
| 350 | int fakeIt = FALSE; |
| 351 | int useMtab = TRUE; |
| 352 | int i; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 353 | |
Erik Andersen | 269bba2 | 2000-03-08 14:50:47 +0000 | [diff] [blame] | 354 | #if defined BB_FEATURE_USE_DEVPS_PATCH |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 355 | if (argc == 1) { |
| 356 | int fd, i, numfilesystems; |
| 357 | char device[] = "/dev/mtab"; |
| 358 | struct k_mntent *mntentlist; |
| 359 | |
| 360 | /* open device */ |
| 361 | fd = open(device, O_RDONLY); |
| 362 | if (fd < 0) |
| 363 | fatalError("open failed for `%s': %s\n", device, strerror (errno)); |
| 364 | |
| 365 | /* How many mounted filesystems? We need to know to |
| 366 | * allocate enough space for later... */ |
| 367 | numfilesystems = ioctl (fd, DEVMTAB_COUNT_MOUNTS); |
| 368 | if (numfilesystems<0) |
| 369 | fatalError( "\nDEVMTAB_COUNT_MOUNTS: %s\n", strerror (errno)); |
| 370 | mntentlist = (struct k_mntent *) calloc ( numfilesystems, sizeof(struct k_mntent)); |
| 371 | |
| 372 | /* Grab the list of mounted filesystems */ |
| 373 | if (ioctl (fd, DEVMTAB_GET_MOUNTS, mntentlist)<0) |
| 374 | fatalError( "\nDEVMTAB_GET_MOUNTS: %s\n", strerror (errno)); |
| 375 | |
| 376 | for( i = 0 ; i < numfilesystems ; i++) { |
| 377 | fprintf( stdout, "%s %s %s %s %d %d\n", mntentlist[i].mnt_fsname, |
| 378 | mntentlist[i].mnt_dir, mntentlist[i].mnt_type, |
| 379 | mntentlist[i].mnt_opts, mntentlist[i].mnt_freq, |
| 380 | mntentlist[i].mnt_passno); |
| 381 | } |
Erik Andersen | 298854f | 2000-03-23 01:09:18 +0000 | [diff] [blame] | 382 | /* Don't bother to close files or free memory. Exit |
| 383 | * does that automagically, so we can save a few bytes */ |
| 384 | #if 0 |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 385 | free( mntentlist); |
| 386 | close(fd); |
Erik Andersen | 298854f | 2000-03-23 01:09:18 +0000 | [diff] [blame] | 387 | #endif |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 388 | exit(TRUE); |
| 389 | } |
| 390 | #else |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 391 | if (argc == 1) { |
| 392 | FILE *mountTable = setmntent(mtab_file, "r"); |
| 393 | |
| 394 | if (mountTable) { |
| 395 | struct mntent *m; |
| 396 | |
| 397 | while ((m = getmntent(mountTable)) != 0) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 398 | char *blockDevice = m->mnt_fsname; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 399 | if (strcmp(blockDevice, "/dev/root") == 0) { |
Erik Andersen | ec5bd90 | 2000-03-22 07:12:05 +0000 | [diff] [blame] | 400 | find_real_root_device_name( blockDevice); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 401 | } |
| 402 | printf("%s on %s type %s (%s)\n", blockDevice, m->mnt_dir, |
| 403 | m->mnt_type, m->mnt_opts); |
| 404 | } |
| 405 | endmntent(mountTable); |
| 406 | } else { |
| 407 | perror(mtab_file); |
Eric Andersen | cb6e256 | 1999-10-16 15:48:40 +0000 | [diff] [blame] | 408 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 409 | exit(TRUE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 410 | } |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 411 | #endif |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 412 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 413 | /* Parse options */ |
| 414 | i = --argc; |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 415 | argv++; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 416 | while (i > 0 && **argv) { |
| 417 | if (**argv == '-') { |
| 418 | char *opt = *argv; |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 419 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 420 | while (i > 0 && *++opt) |
| 421 | switch (*opt) { |
| 422 | case 'o': |
| 423 | if (--i == 0) { |
| 424 | goto goodbye; |
| 425 | } |
| 426 | parse_mount_options(*(++argv), &flags, string_flags); |
| 427 | break; |
| 428 | case 'r': |
| 429 | flags |= MS_RDONLY; |
| 430 | break; |
| 431 | case 't': |
| 432 | if (--i == 0) { |
| 433 | goto goodbye; |
| 434 | } |
| 435 | filesystemType = *(++argv); |
| 436 | break; |
| 437 | case 'w': |
| 438 | flags &= ~MS_RDONLY; |
| 439 | break; |
| 440 | case 'a': |
| 441 | all = TRUE; |
| 442 | break; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 443 | case 'f': |
| 444 | fakeIt = TRUE; |
| 445 | break; |
Erik Andersen | ce91732 | 2000-03-13 04:07:02 +0000 | [diff] [blame] | 446 | #ifdef BB_MTAB |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 447 | case 'n': |
| 448 | useMtab = FALSE; |
| 449 | break; |
Eric Andersen | a9c95ea | 1999-11-15 17:33:30 +0000 | [diff] [blame] | 450 | #endif |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 451 | case 'v': |
Erik Andersen | 983b51b | 2000-04-04 18:14:25 +0000 | [diff] [blame] | 452 | break; /* ignore -v */ |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 453 | case 'h': |
| 454 | case '-': |
| 455 | goto goodbye; |
| 456 | } |
| 457 | } else { |
| 458 | if (device == NULL) |
| 459 | device = *argv; |
| 460 | else if (directory == NULL) |
| 461 | directory = *argv; |
| 462 | else { |
| 463 | goto goodbye; |
| 464 | } |
| 465 | } |
| 466 | i--; |
| 467 | argv++; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 468 | } |
Eric Andersen | d73dc5b | 1999-11-10 23:13:02 +0000 | [diff] [blame] | 469 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 470 | if (all == TRUE) { |
| 471 | struct mntent *m; |
| 472 | FILE *f = setmntent("/etc/fstab", "r"); |
| 473 | |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 474 | if (f == NULL) |
Erik Andersen | ec5bd90 | 2000-03-22 07:12:05 +0000 | [diff] [blame] | 475 | fatalError( "\nCannot read /etc/fstab: %s\n", strerror (errno)); |
Erik Andersen | 246cc6d | 2000-03-07 07:41:42 +0000 | [diff] [blame] | 476 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 477 | while ((m = getmntent(f)) != NULL) { |
Erik Andersen | 7ab9c7e | 2000-05-12 19:41:47 +0000 | [diff] [blame] | 478 | // If the filesystem isn't noauto, |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 479 | // and isn't swap or nfs, then mount it |
| 480 | if ((!strstr(m->mnt_opts, "noauto")) && |
Eric Andersen | a42982e | 2000-06-07 17:28:53 +0000 | [diff] [blame] | 481 | (!strstr(m->mnt_type, "swap")) && |
| 482 | (!strstr(m->mnt_type, "nfs"))) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 483 | flags = 0; |
| 484 | *string_flags = '\0'; |
| 485 | parse_mount_options(m->mnt_opts, &flags, string_flags); |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 486 | if (mount_one(m->mnt_fsname, m->mnt_dir, m->mnt_type, |
Eric Andersen | a42982e | 2000-06-07 17:28:53 +0000 | [diff] [blame] | 487 | flags, string_flags, useMtab, fakeIt, |
| 488 | extra_opts, FALSE)==FALSE) |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 489 | { |
| 490 | /* Try again, but this time try a remount */ |
| 491 | mount_one(m->mnt_fsname, m->mnt_dir, m->mnt_type, |
Eric Andersen | a42982e | 2000-06-07 17:28:53 +0000 | [diff] [blame] | 492 | flags|MS_REMOUNT, string_flags, useMtab, fakeIt, |
| 493 | extra_opts, TRUE); |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 494 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 495 | } |
| 496 | } |
| 497 | endmntent(f); |
| 498 | } else { |
| 499 | if (device && directory) { |
| 500 | #ifdef BB_NFSMOUNT |
Pavel Roskin | 680d65a | 2000-06-06 17:03:55 +0000 | [diff] [blame] | 501 | if (strchr(device, ':') != NULL) |
| 502 | filesystemType = "nfs"; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 503 | if (strcmp(filesystemType, "nfs") == 0) { |
Pavel Roskin | 680d65a | 2000-06-06 17:03:55 +0000 | [diff] [blame] | 504 | int ret; |
| 505 | ret = nfsmount (device, directory, &flags, |
| 506 | &extra_opts, &string_flags, 1); |
| 507 | if (ret != 0) |
| 508 | fatalError("nfsmount failed: %s\n", strerror(errno)); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 509 | } |
| 510 | #endif |
| 511 | exit(mount_one(device, directory, filesystemType, |
| 512 | flags, string_flags, useMtab, fakeIt, |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 513 | extra_opts, TRUE)); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 514 | } else { |
| 515 | goto goodbye; |
| 516 | } |
| 517 | } |
| 518 | exit(TRUE); |
| 519 | |
| 520 | goodbye: |
| 521 | usage(mount_usage); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 522 | } |