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/* mount - mount a file system Author: Andy Tanenbaum */
#include <errno.h>
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <unistd.h>
#include <minix/minlib.h>
#include <stdio.h>
#include <fstab.h>
#define MINIX_FS_TYPE "mfs"
int main(int argc, char **argv);
void list(void);
void usage(void);
void update_mtab(char *dev, char *mountpoint, char *fstype, int mountflags);
int mount_all(void);
static int write_mtab = 1;
int main(argc, argv)
int argc;
char *argv[];
{
int all = 0, i, v = 0, mountflags, srvflags;
char **ap, *opt, *err, *type, *args, *device;
if (argc == 1) list(); /* just list /etc/mtab */
mountflags = 0;
srvflags = 0;
type = NULL;
args = NULL;
ap = argv+1;
for (i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
opt = argv[i]+1;
while (*opt != 0) switch (*opt++) {
case 'r': mountflags |= MNT_RDONLY; break;
case 't': if (++i == argc) usage();
type = argv[i];
break;
case 'i': srvflags |= MS_REUSE; break;
case 'e': srvflags |= MS_EXISTING; break;
case 'n': write_mtab = 0; break;
case 'o': if (++i == argc) usage();
args = argv[i];
break;
case 'a': all = 1; break;
default: usage();
}
} else {
*ap++ = argv[i];
}
}
*ap = NULL;
argc = (ap - argv);
if (!all && (argc != 3 || *argv[1] == 0)) usage();
if (all == 1) {
return mount_all();
}
device = argv[1];
if (!strcmp(device, "none")) device = NULL;
if ((type == NULL || !strcmp(type, MINIX_FS_TYPE)) && device != NULL) {
/* auto-detect type and/or version */
v = fsversion(device, "mount");
switch (v) {
case FSVERSION_MFS1:
case FSVERSION_MFS2:
case FSVERSION_MFS3: type = MINIX_FS_TYPE; break;
case FSVERSION_EXT2: type = "ext2"; break;
case FSVERSION_ISO9660: type = "isofs"; break;
}
}
if (minix_mount(device, argv[2], mountflags, srvflags, type, args) < 0) {
err = strerror(errno);
fprintf(stderr, "mount: Can't mount %s on %s: %s\n",
argv[1], argv[2], err);
return(EXIT_FAILURE);
}
printf("%s is mounted on %s\n", argv[1], argv[2]);
return(EXIT_SUCCESS);
}
void list()
{
int n;
char dev[PATH_MAX], mountpoint[PATH_MAX], type[MNTNAMELEN], flags[MNTFLAGLEN];
/* Read and print /etc/mtab. */
n = load_mtab("mount");
if (n < 0) exit(1);
while (1) {
n = get_mtab_entry(dev, mountpoint, type, flags);
if (n < 0) break;
printf("%s on %s type %s (%s)\n", dev, mountpoint, type, flags);
}
exit(0);
}
int
has_opt(char *mntopts, char *option)
{
char *optbuf, *opt;
int found = 0;
optbuf = strdup(mntopts);
for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
if (!strcmp(opt, option)) found = 1;
}
free (optbuf);
return(found);
}
int
mount_all()
{
struct fstab *fs;
int ro, mountflags;
char mountpoint[PATH_MAX];
char *device, *err;
while ((fs = getfsent()) != NULL) {
ro = 0;
mountflags = 0;
device = NULL;
if (realpath(fs->fs_file, mountpoint) == NULL) {
fprintf(stderr, "Can't mount on %s\n", fs->fs_file);
return(EXIT_FAILURE);
}
if (has_opt(fs->fs_mntops, "noauto"))
continue;
if (!strcmp(mountpoint, "/"))
continue; /* Not remounting root */
if (has_opt(fs->fs_mntops, "ro"))
ro = 1;
if (ro) {
mountflags |= MNT_RDONLY;
}
device = fs->fs_spec;
/* passing a null string for block special device means don't
* use a device at all and this is what we need to do for
* entries starting with "none"
*/
if (!strcmp(device, "none"))
device = NULL;
if (minix_mount(device, mountpoint, mountflags, 0, fs->fs_vfstype,
fs->fs_mntops) != 0) {
err = strerror(errno);
fprintf(stderr, "mount: Can't mount %s on %s: %s\n",
fs->fs_spec, fs->fs_file, err);
return(EXIT_FAILURE);
}
}
return(EXIT_SUCCESS);
}
void usage()
{
std_err("Usage: mount [-a] [-r] [-e] [-t type] [-o options] special name\n");
exit(1);
}
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