| /* |
| * mount.c, by rmk |
| */ |
| #include <sys/mount.h> |
| #include <errno.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include "mount_opts.h" |
| |
| char *progname; |
| |
| static struct extra_opts extra; |
| static unsigned long rwflag; |
| |
| static int |
| do_mount(char *dev, char *dir, char *type, unsigned long rwflag, void *data) |
| { |
| char *s; |
| int error = 0; |
| |
| while ((s = strsep(&type, ",")) != NULL) { |
| retry: |
| if (mount(dev, dir, s, rwflag, data) == -1) { |
| error = errno; |
| /* |
| * If the filesystem is not found, or the |
| * superblock is invalid, try the next. |
| */ |
| if (error == ENODEV || error == EINVAL) |
| continue; |
| |
| /* |
| * If we get EACCESS, and we're trying to |
| * mount readwrite and this isn't a remount, |
| * try read only. |
| */ |
| if (error == EACCES && |
| (rwflag & (MS_REMOUNT|MS_RDONLY)) == 0) { |
| rwflag |= MS_RDONLY; |
| goto retry; |
| } |
| break; |
| } |
| } |
| |
| if (error) { |
| errno = error; |
| perror("mount"); |
| return 255; |
| } |
| |
| return 0; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| char *type = NULL; |
| int c; |
| |
| progname = argv[0]; |
| rwflag = MS_VERBOSE; |
| |
| do { |
| c = getopt(argc, argv, "o:rt:w"); |
| if (c == EOF) |
| break; |
| switch (c) { |
| case 'o': |
| rwflag = parse_mount_options(optarg, rwflag, &extra); |
| break; |
| case 'r': |
| rwflag |= MS_RDONLY; |
| break; |
| case 't': |
| type = optarg; |
| break; |
| case 'w': |
| rwflag &= ~MS_RDONLY; |
| break; |
| case '?': |
| fprintf(stderr, "%s: invalid option -%c\n", |
| progname, optopt); |
| exit(1); |
| } |
| } while (1); |
| |
| /* |
| * If remount, bind or move was specified, then we don't |
| * have a "type" as such. Use the dummy "none" type. |
| */ |
| if (rwflag & MS_TYPE) |
| type = "none"; |
| |
| if (optind + 2 != argc || type == NULL) { |
| fprintf(stderr, "Usage: %s [-r] [-w] [-o options] [-t type] " |
| "device directory\n", progname); |
| exit(1); |
| } |
| |
| return do_mount(argv[optind], argv[optind + 1], type, rwflag, |
| extra.str); |
| } |