/*
* Mini mount implementation for busybox
*
- * Copyright (C) 1999 by Erik Andersen <andersee@debian.org>
+ * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* will try mounting stuff with all fses when passed -t auto
*
* 1999-04-17 Dave Cinege...Rewrote -t auto. Fixed ro mtab.
- * 1999-10-07 Erik Andersen. Removed mtab usage, major adjustments,
- * and some serious dieting all around.
+ *
+ * 1999-10-07 Erik Andersen <andersen@lineo.com>, <andersee@debian.org>.
+ * Rewrote of a lot of code. Removed mtab usage (I plan on
+ * putting it back as a compile-time option some time),
+ * major adjustments to option parsing, and some serious
+ * dieting all around.
*/
#include "internal.h"
#include <ctype.h>
#include <fstab.h>
-const char mount_usage[] = "Usage:\tmount [flags]\n"
+extern const char mtab_file[]; /* Defined in utility.c */
+
+static const char mount_usage[] = "\tmount [flags]\n"
"\tmount [flags] device directory [-o options,more-options]\n"
"\n"
"Flags:\n"
"\t-a:\tMount all file systems in fstab.\n"
+#ifdef BB_MTAB
+ "\t-f:\t\"Fake\" mount. Add entry to mount table but don't mount it.\n"
+ "\t-n:\tDon't write a mount table entry.\n"
+#endif
"\t-o option:\tOne of many filesystem options, listed below.\n"
"\t-r:\tMount the filesystem read-only.\n"
"\t-t filesystem-type:\tSpecify the filesystem type.\n"
"There are EVEN MORE flags that are specific to each filesystem.\n"
"You'll have to see the written documentation for those.\n";
+
struct mount_options {
const char *name;
unsigned long and;
{0, 0, 0}
};
+#if ! defined BB_MTAB
+#define do_mount(specialfile, dir, filesystemtype, flags, string_flags, useMtab, fakeIt, mtab_opts) \
+ mount(specialfile, dir, filesystemtype, flags, string_flags)
+#else
+static int
+do_mount(char* specialfile, char* dir, char* filesystemtype,
+ long flags, void* string_flags, int useMtab, int fakeIt, char* mtab_opts)
+{
+ int status=0;
+
+ if (fakeIt==FALSE)
+ status=mount(specialfile, dir, filesystemtype, flags, string_flags);
+
+ if ( status == 0 ) {
+ if ( useMtab==TRUE )
+ write_mtab(specialfile, dir, filesystemtype, flags, mtab_opts);
+ return 0;
+ }
+ else
+ return( status);
+}
+#endif
+
+/* Seperate standard mount options from the nonstandard string options */
static void
-parse_mount_options ( char *options, unsigned long *flags, char *data)
+parse_mount_options ( char *options, unsigned long *flags, char *strflags)
{
- printf("option=%s\n", options);
- while (*options) {
+ while (options) {
+ int gotone=FALSE;
char *comma = strchr (options, ',');
const struct mount_options* f = mount_options;
if (comma)
*comma = '\0';
- printf("checking option=%s vs %s\n", options, f->name);
while (f->name != 0) {
- printf("checking option=%s vs %s\n", options, f->name);
if (strcasecmp (f->name, options) == 0) {
+
*flags &= f->and;
*flags |= f->or;
- return;
+ gotone=TRUE;
+ break;
}
f++;
}
- if (*data) {
- data += strlen (data);
- *data++ = ',';
+ if (*strflags && strflags!= '\0' && gotone==FALSE) {
+ char *temp=strflags;
+ temp += strlen (strflags);
+ *temp++ = ',';
+ *temp++ = '\0';
+ }
+ if (gotone==FALSE) {
+ strcat (strflags, options);
+ gotone=FALSE;
}
- strcpy (data, options);
if (comma) {
*comma = ',';
options = ++comma;
- } else
+ } else {
break;
+ }
}
}
int
-mount_one (
- char *blockDevice, char *directory, char *filesystemType,
- unsigned long flags, char *string_flags)
+mount_one(char *blockDevice, char *directory, char *filesystemType,
+ unsigned long flags, char *string_flags, int useMtab, int fakeIt, char *mtab_opts)
{
int status = 0;
char buf[255];
+#if defined BB_FEATURE_USE_PROCFS
if (strcmp(filesystemType, "auto") == 0) {
FILE *f = fopen ("/proc/filesystems", "r");
filesystemType = buf;
filesystemType++; // hop past tab
- status = mount (blockDevice, directory, filesystemType,
- flags | MS_MGC_VAL, string_flags);
+ status = do_mount (blockDevice, directory, filesystemType,
+ flags | MS_MGC_VAL, string_flags, useMtab,
+ fakeIt, mtab_opts);
if (status == 0)
break;
}
}
fclose (f);
- } else {
- status = mount (blockDevice, directory, filesystemType,
- flags | MS_MGC_VAL, string_flags);
+ } else
+#endif
+ {
+ status = do_mount (blockDevice, directory, filesystemType,
+ flags | MS_MGC_VAL, string_flags, useMtab,
+ fakeIt, mtab_opts);
}
if (status) {
extern int mount_main (int argc, char **argv)
{
- char string_flags[1024]="\0";
+ char string_flags_buf[1024]="";
+ char *string_flags = string_flags_buf;
+ char *extra_opts = string_flags_buf;
unsigned long flags = 0;
char *filesystemType = "auto";
- int all = 0;
- int i = argc;
+ char *device = NULL;
+ char *directory = NULL;
+ int all = FALSE;
+ int fakeIt = FALSE;
+ int useMtab = TRUE;
+ int i;
+
+ /* Only compiled in if BB_MTAB is not defined */
+ whine_if_fstab_is_missing();
if (argc == 1) {
- FILE *mountTable;
- if ((mountTable = setmntent ("/proc/mounts", "r"))) {
+ FILE *mountTable = setmntent (mtab_file, "r");
+ if (mountTable) {
struct mntent *m;
while ((m = getmntent (mountTable)) != 0) {
+ struct fstab* fstabItem;
char *blockDevice = m->mnt_fsname;
- if (strcmp (blockDevice, "/dev/root") == 0)
- blockDevice = (getfsfile ("/"))->fs_spec;
+ /* Note that if /etc/fstab is missing, libc can't fix up /dev/root for us */
+ if (strcmp (blockDevice, "/dev/root") == 0) {
+ fstabItem = getfsfile ("/");
+ if (fstabItem != NULL)
+ blockDevice = fstabItem->fs_spec;
+ }
printf ("%s on %s type %s (%s)\n", blockDevice, m->mnt_dir,
m->mnt_type, m->mnt_opts);
}
endmntent (mountTable);
+ } else {
+ perror(mtab_file);
}
- return( TRUE);
+ exit( TRUE);
}
/* Parse options */
- while (**argv) {
+ i = --argc;
+ argv++;
+ while (i > 0 && **argv) {
if (**argv == '-') {
- switch (**argv) {
+ char *opt = *argv;
+ while (i>0 && *++opt) switch (*opt) {
case 'o':
- if (++argv == 0) {
- fprintf (stderr, "%s\n", mount_usage);
- return( FALSE);
+ if (--i == 0) {
+ goto goodbye;
}
- parse_mount_options (*argv, &flags, string_flags);
- argc--;
- argv++;
+ parse_mount_options (*(++argv), &flags, string_flags);
break;
case 'r':
flags |= MS_RDONLY;
break;
case 't':
- if (++argv == 0) {
- fprintf (stderr, "%s\n", mount_usage);
- return( FALSE);
+ if (--i == 0) {
+ goto goodbye;
}
- filesystemType = *argv;
- argc--;
- argv++;
+ filesystemType = *(++argv);
break;
case 'w':
flags &= ~MS_RDONLY;
break;
case 'a':
- all = 1;
+ all = TRUE;
break;
+#ifdef BB_MTAB
+ case 'f':
+ fakeIt = TRUE;
+ break;
+ case 'n':
+ useMtab = FALSE;
+ break;
+#endif
case 'v':
case 'h':
case '-':
- fprintf (stderr, "%s\n", mount_usage);
- return( TRUE);
+ goto goodbye;
+ }
+ } else {
+ if (device == NULL)
+ device=*argv;
+ else if (directory == NULL)
+ directory=*argv;
+ else {
+ goto goodbye;
}
}
i--;
argv++;
}
- if (all == 1) {
+ if (all == TRUE) {
struct mntent *m;
FILE *f = setmntent ("/etc/fstab", "r");
if (f == NULL) {
perror("/etc/fstab");
- return( FALSE);
+ exit( FALSE);
}
- // FIXME: Combine read routine (make new function) with unmount_all
- // to save space.
-
while ((m = getmntent (f)) != NULL) {
- // If the file system isn't noauto, and isn't mounted on /, mount
- // it
- if ((!strstr (m->mnt_opts, "noauto"))
- && (m->mnt_dir[1] != '\0') && !((m->mnt_type[0] == 's')
- && (m->mnt_type[1] == 'w'))
- && !((m->mnt_type[0] == 'n') && (m->mnt_type[1] == 'f'))) {
- mount_one (m->mnt_fsname, m->mnt_dir, m->mnt_type, flags,
- m->mnt_opts);
+ // If the file system isn't noauto, and isn't mounted on /,
+ // and isn't swap or nfs, then mount it
+ if ((!strstr (m->mnt_opts, "noauto")) &&
+ (m->mnt_dir[1] != '\0') &&
+ (!strstr (m->mnt_type, "swap")) &&
+ (!strstr (m->mnt_type, "nfs")))
+ {
+ flags = 0;
+ *string_flags = '\0';
+ parse_mount_options(m->mnt_opts, &flags, string_flags);
+ mount_one (m->mnt_fsname, m->mnt_dir, m->mnt_type,
+ flags, string_flags, useMtab, fakeIt, extra_opts);
}
}
-
endmntent (f);
} else {
- if (argc >= 3) {
- while (i < argc)
- argv--;
- while (**argv == '-')
- argv++;
- if (mount_one
- (*argv, *(argv+1), filesystemType, flags,
- string_flags) == 0) return 0;
- else
- return( FALSE);
+ if (device && directory) {
+#ifdef BB_NFSMOUNT
+ if (strcmp(filesystemType, "nfs") == 0) {
+ if (nfsmount(device, directory, &flags, &extra_opts, &string_flags, 1) != 0)
+ exit(FALSE);
+ }
+#endif
+ exit (mount_one (device, directory, filesystemType,
+ flags, string_flags, useMtab, fakeIt, extra_opts));
} else {
- fprintf (stderr, "%s\n", mount_usage);
- return( FALSE);
+ goto goodbye;
}
}
- return( TRUE);
+ exit( TRUE);
+
+goodbye:
+ usage( mount_usage);
}