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mke2fs.c (zap_sector): Now takes a third argument, which is how
[tools/e2fsprogs.git] / misc / fsck.c
index 95a58d8..10cf39f 100644 (file)
@@ -79,55 +79,7 @@ static const char *really_wanted[] = {
        NULL
 };
 
-#ifdef DEV_DSK_DEVICES
-static const char *base_devices[] = {
-       "/dev/dsk/hda",
-       "/dev/dsk/hdb",
-       "/dev/dsk/hdc",
-       "/dev/dsk/hdd",
-       "/dev/dsk/hde",
-       "/dev/dsk/hdf",
-       "/dev/dsk/hdg",
-       "/dev/dsk/hdh",
-       "/dev/dsk/hd1a",
-       "/dev/dsk/hd1b",
-       "/dev/dsk/hd1c",
-       "/dev/dsk/hd1d",
-       "/dev/dsk/sda",
-       "/dev/dsk/sdb",
-       "/dev/dsk/sdc",
-       "/dev/dsk/sdd",
-       "/dev/dsk/sde",
-       "/dev/dsk/sdf",
-       "/dev/dsk/sdg",
-       NULL
-};
-#else
 #define BASE_MD "/dev/md"
-static const char *base_devices[] = {
-       "/dev/hda",
-       "/dev/hdb",
-       "/dev/hdc",
-       "/dev/hdd",
-       "/dev/hde",
-       "/dev/hdf",
-       "/dev/hdg",
-       "/dev/hdh",
-       "/dev/hd1a",
-       "/dev/hd1b",
-       "/dev/hd1c",
-       "/dev/hd1d",
-       "/dev/sda",
-       "/dev/sdb",
-       "/dev/sdc",
-       "/dev/sdd",
-       "/dev/sde",
-       "/dev/sdf",
-       "/dev/sdg",
-       BASE_MD,
-       NULL
-};
-#endif
 
 /*
  * Global variables for options
@@ -154,16 +106,6 @@ const char *fsck_prefix_path = "/sbin:/sbin/fs.d:/sbin/fs:/etc/fs:/etc";
 char *fsck_path = 0;
 static int ignore(struct fs_info *);
 
-static char *string_copy(const char *s)
-{
-       char    *ret;
-
-       ret = malloc(strlen(s)+1);
-       if (ret)
-               strcpy(ret, s);
-       return ret;
-}
-
 static char *skip_over_blank(char *cp)
 {
        while (*cp && isspace(*cp))
@@ -213,6 +155,8 @@ static void free_instance(struct fsck_instance *i)
                free(i->prog);
        if (i->device)
                free(i->device);
+       if (i->base_device)
+               free(i->base_device);
        free(i);
        return;
 }
@@ -263,18 +207,11 @@ static int parse_fstab_line(char *line, struct fs_info **ret_fs)
  */
 static char *interpret_device(char *spec)
 {
-       char *dev = NULL;
-       
-       if (!strncmp(spec, "UUID=", 5))
-               dev = get_spec_by_uuid(spec+5);
-       else if (!strncmp(spec, "LABEL=", 6))
-               dev = get_spec_by_volume_label(spec+6);
-       else
-               return spec;
-       if (dev) {
-               free(spec);
-               return (dev);
-       }
+       char *dev = interpret_spec(spec);
+
+       if (dev)
+               return dev;
+
        /*
         * Check to see if this was because /proc/partitions isn't
         * found.
@@ -283,21 +220,42 @@ static char *interpret_device(char *spec)
                fprintf(stderr, "Couldn't open /proc/partitions: %s\n",
                        strerror(errno));
                fprintf(stderr, "Is /proc mounted?\n");
-               exit(1);
+               exit(EXIT_ERROR);
        }
        /*
         * Check to see if this is because we're not running as root
         */
        if (geteuid())
-               fprintf(stderr, "Must be root to scan for matching "
-                       "filesystems: %s\n", spec);
+               fprintf(stderr,
+                       "Must be root to scan for matching filesystems: %s\n",
+                       spec);
        else
-               fprintf(stderr, "Couldn't find matching filesystem: %s\n", 
+               fprintf(stderr, "Couldn't find matching filesystem: %s\n",
                        spec);
-       exit(1);
+       exit(EXIT_ERROR);
 }
 
 /*
+ * Interpret filesystem auto type if necessary
+ */
+static void interpret_type(struct fs_info *fs)
+{
+       const char      *type;
+       
+       if (strcmp(fs->type, "auto") == 0) {
+               type = identify_fs(fs->device);
+               if (type) {
+                       free(fs->type);
+                       fs->type = string_copy(type);
+               } else
+                       fprintf(stderr, _("Could not determine "
+                                         "filesystem type for %s\n"),
+                               fs->device);
+       }
+}
+
+
+/*
  * Load the filesystem database from /etc/fstab
  */
 static void load_fs_info(const char *filename)
@@ -486,6 +444,7 @@ static int execute(const char *type, char *device, char *mntpt,
        inst->prog = string_copy(prog);
        inst->type = string_copy(type);
        inst->device = string_copy(device);
+       inst->base_device = base_device(device);
        inst->start_time = time(0);
        inst->next = NULL;
 
@@ -636,11 +595,14 @@ static void fsck_device(char *device, int interactive)
        struct fs_info *fsent;
        int retval;
 
-       if (fstype && strncmp(fstype, "no", 2) && !strchr(fstype, ','))
+       if (fstype && strncmp(fstype, "no", 2) &&
+           strncmp(fstype, "opts=", 5) && strncmp(fstype, "loop", 4) && 
+           !strchr(fstype, ','))
                type = fstype;
 
        if ((fsent = lookup(device))) {
                device = fsent->device;
+               interpret_type(fsent);
                if (!type)
                        type = fsent->type;
        }
@@ -655,31 +617,145 @@ static void fsck_device(char *device, int interactive)
        }
 }
 
-/* See if filesystem type matches the list. */
-static int fs_match(char *type, char *fs_type)
+
+/*
+ * Deal with the fsck -t argument.
+ */
+struct fs_type_compile {
+       char **list;
+       int *type;
+       int  negate;
+} fs_type_compiled;
+
+#define FS_TYPE_NORMAL 0
+#define FS_TYPE_OPT    1
+#define FS_TYPE_NEGOPT 2
+
+static const char *fs_type_syntax_error =
+N_("Either all or none of the filesystem types passed to -t must be prefixed\n"
+   "with 'no' or '!'.\n");
+
+static void compile_fs_type(char *fs_type, struct fs_type_compile *cmp)
 {
-  int ret = 0, negate = 0;
-  char list[128];
-  char *s;
+       char    *cp, *list, *s;
+       int     num = 2;
+       int     negate, first_negate = 1;
+
+       if (fs_type) {
+               for (cp=fs_type; *cp; cp++) {
+                       if (*cp == ',')
+                               num++;
+               }
+       }
 
-  if (!fs_type) return(1);
+       cmp->list = malloc(num * sizeof(char *));
+       cmp->type = malloc(num * sizeof(int));
+       if (!cmp->list || !cmp->type) {
+               fprintf(stderr, _("Couldn't allocate memory for "
+                                 "filesystem types\n"));
+               exit(EXIT_ERROR);
+       }
+       memset(cmp->list, 0, num * sizeof(char *));
+       memset(cmp->type, 0, num * sizeof(int));
+       cmp->negate = 0;
 
-  if (strncmp(fs_type, "no", 2) == 0) {
-       fs_type += 2;
-       negate = 1;
-  }
-  strcpy(list, fs_type);
-  s = strtok(list, ",");
-  while(s) {
-       if (strcmp(s, type) == 0) {
-               ret = 1;
-               break;
+       if (!fs_type)
+               return;
+       
+       list = string_copy(fs_type);
+       num = 0;
+       s = strtok(list, ",");
+       while(s) {
+               negate = 0;
+               if (strncmp(s, "no", 2) == 0) {
+                       s += 2;
+                       negate = 1;
+               } else if (*s == '!') {
+                       s++;
+                       negate = 1;
+               }
+               if (strcmp(s, "loop") == 0)
+                       /* loop is really short-hand for opts=loop */
+                       goto loop_special_case;
+               else if (strncmp(s, "opts=", 5) == 0) {
+                       s += 5;
+               loop_special_case:
+                       cmp->type[num] = negate ? FS_TYPE_NEGOPT : FS_TYPE_OPT;
+               } else {
+                       if (first_negate) {
+                               cmp->negate = negate;
+                               first_negate = 0;
+                       }
+                       if ((negate && !cmp->negate) ||
+                           (!negate && cmp->negate)) {
+                               fprintf(stderr, _(fs_type_syntax_error));
+                               exit(EXIT_USAGE);
+                       }
+               }
+#if 0
+               printf("Adding %s to list (type %d).\n", s, cmp->type[num]);
+#endif
+               cmp->list[num++] = string_copy(s);
+               s = strtok(NULL, ",");
        }
-       s = strtok(NULL, ",");
-  }
-  return(negate ? !ret : ret);
+       free(list);
+}
+
+/*
+ * This function returns true if a particular option appears in a
+ * comma-delimited options list
+ */
+static int opt_in_list(char *opt, char *optlist)
+{
+       char    *list, *s;
+
+       if (!optlist)
+               return 0;
+       list = string_copy(optlist);
+       
+       s = strtok(list, ",");
+       while(s) {
+               if (strcmp(s, opt) == 0) {
+                       free(list);
+                       return 1;
+               }
+               s = strtok(NULL, ",");
+       }
+        free(list);
+       return 0;
 }
 
+/* See if the filesystem matches the criteria given by the -t option */
+static int fs_match(struct fs_info *fs, struct fs_type_compile *cmp)
+{
+       int n, ret = 0, checked_type = 0;
+       char *cp;
+
+       if (cmp->list == 0 || cmp->list[0] == 0)
+               return 1;
+
+       for (n=0; cp = cmp->list[n]; n++) {
+               switch (cmp->type[n]) {
+               case FS_TYPE_NORMAL:
+                       checked_type++;
+                       if (strcmp(cp, fs->type) == 0) {
+                               ret = 1;
+                       }
+                       break;
+               case FS_TYPE_NEGOPT:
+                       if (opt_in_list(cp, fs->opts))
+                               return 0;
+                       break;
+               case FS_TYPE_OPT:
+                       if (!opt_in_list(cp, fs->opts))
+                               return 0;
+                       break;
+               }
+       }
+       if (checked_type == 0)
+               return 1;
+       return (cmp->negate ? !ret : ret);
+}
 
 /* Check if we should ignore this filesystem. */
 static int ignore(struct fs_info *fs)
@@ -693,15 +769,17 @@ static int ignore(struct fs_info *fs)
        if (fs->passno == 0)
                return 1;
 
+       interpret_type(fs);
+
        /*
         * If a specific fstype is specified, and it doesn't match,
         * ignore it.
         */
-       if (!fs_match(fs->type, fstype)) return 1;
+       if (!fs_match(fs, &fs_type_compiled)) return 1;
        
        /* Are we ignoring this type? */
        for(ip = ignored_types; *ip; ip++)
-               if (strcmp(fs->type, *ip) == 0) return(1);
+               if (strcmp(fs->type, *ip) == 0) return 1;
 
        /* Do we really really want to check this fs? */
        for(ip = really_wanted; *ip; ip++)
@@ -715,7 +793,7 @@ static int ignore(struct fs_info *fs)
                if (wanted)
                        fprintf(stderr, _("fsck: cannot check %s: fsck.%s not found\n"),
                                fs->device, fs->type);
-               return(1);
+               return 1;
        }
 
        /* We can and want to check this file system type. */
@@ -723,30 +801,13 @@ static int ignore(struct fs_info *fs)
 }
 
 /*
- * Return the "base device" given a particular device; this is used to
- * assure that we only fsck one partition on a particular drive at any
- * one time.  Otherwise, the disk heads will be seeking all over the
- * place.
- */
-static const char *base_device(char *device)
-{
-       const char **base;
-
-       for (base = base_devices; *base; base++) {
-               if (!strncmp(*base, device, strlen(*base)))
-                       return *base;
-       }
-       return device;
-}
-
-/*
  * Returns TRUE if a partition on the same disk is already being
  * checked.
  */
 static int device_already_active(char *device)
 {
        struct fsck_instance *inst;
-       const char *base = base_device(device);
+       char *base;
 
        if (force_all_parallel)
                return 0;
@@ -759,10 +820,20 @@ static int device_already_active(char *device)
                return 1;
 #endif
 
+       base = base_device(device);
+       /*
+        * If we don't know the base device, assume that the device is
+        * already active if there are any fsck instances running.
+        */
+       if (!base) 
+               return (instance_list != 0);
        for (inst = instance_list; inst; inst = inst->next) {
-               if (!strcmp(base, base_device(inst->device)))
+               if (!inst->base_device || !strcmp(base, inst->base_device)) {
+                       free(base);
                        return 1;
+               }
        }
+       free(base);
        return 0;
 }
 
@@ -780,32 +851,36 @@ static int check_all(NOARGS)
                printf(_("Checking all file systems.\n"));
 
        /*
-        * Find and check the root filesystem first.
+        * Do an initial scan over the filesystem; mark filesystems
+        * which should be ignored as done, and resolve LABEL= and
+        * UUID= specifications to the real device.
+        */
+       for (fs = filesys_info; fs; fs = fs->next) {
+               if (ignore(fs))
+                       fs->flags |= FLAG_DONE;
+               else
+                       fs->device = interpret_device(fs->device);
+       }
+               
+       /*
+        * Find and check the root filesystem.
         */
        if (!parallel_root) {
                for (fs = filesys_info; fs; fs = fs->next) {
                        if (!strcmp(fs->mountpt, "/"))
                                break;
                }
-               if (fs && !skip_root && !ignore(fs)) {
-                       fs->device = interpret_device(fs->device);
-                       fsck_device(fs->device, 1);
+               if (fs) {
+                       if (!skip_root && !ignore(fs)) {
+                               fsck_device(fs->device, 1);
+                               status |= wait_all();
+                               if (status > EXIT_NONDESTRUCT)
+                                       return status;
+                       }
                        fs->flags |= FLAG_DONE;
-                       status |= wait_all();
-                       if (status > EXIT_NONDESTRUCT)
-                               return status;
                }
        }
-       if (fs) fs->flags |= FLAG_DONE;
 
-       /*
-        * Mark filesystems that should be ignored as done.
-        */
-       for (fs = filesys_info; fs; fs = fs->next) {
-               if (ignore(fs))
-                       fs->flags |= FLAG_DONE;
-       }
-               
        while (not_done_yet) {
                not_done_yet = 0;
                pass_done = 1;
@@ -834,7 +909,6 @@ static int check_all(NOARGS)
                        /*
                         * Spawn off the fsck process
                         */
-                       fs->device = interpret_device(fs->device);
                        fsck_device(fs->device, serialize);
                        fs->flags |= FLAG_DONE;
 
@@ -893,7 +967,7 @@ static void PRS(int argc, char *argv[])
                        if (num_devices >= MAX_DEVICES) {
                                fprintf(stderr, _("%s: too many devices\n"),
                                        progname);
-                               exit(1);
+                               exit(EXIT_ERROR);
                        }
                        devices[num_devices++] =
                                interpret_device(string_copy(arg));
@@ -903,7 +977,7 @@ static void PRS(int argc, char *argv[])
                        if (num_args >= MAX_ARGS) {
                                fprintf(stderr, _("%s: too many arguments\n"),
                                        progname);
-                               exit(1);
+                               exit(EXIT_ERROR);
                        }
                        args[num_args++] = string_copy(arg);
                        continue;
@@ -944,11 +1018,13 @@ static void PRS(int argc, char *argv[])
                        case 't':
                                if (arg[j+1]) {
                                        fstype = string_copy(arg+j+1);
+                                       compile_fs_type(fstype, &fs_type_compiled);
                                        goto next_arg;
                                }
                                if ((i+1) < argc) {
                                        i++;
                                        fstype = string_copy(argv[i]);
+                                       compile_fs_type(fstype, &fs_type_compiled);
                                        goto next_arg;
                                }
                                usage();
@@ -956,6 +1032,9 @@ static void PRS(int argc, char *argv[])
                        case '-':
                                opts_for_fsck++;
                                break;
+                       case '?':
+                               usage();
+                               break;
                        default:
                                options[++opt] = arg[j];
                                break;
@@ -969,7 +1048,7 @@ static void PRS(int argc, char *argv[])
                                fprintf(stderr,
                                        _("%s: too many arguments\n"),
                                        progname);
-                               exit(1);
+                               exit(EXIT_ERROR);
                        }
                        args[num_args++] = string_copy(options);
                        opt = 0;
@@ -995,8 +1074,7 @@ int main(int argc, char *argv[])
        PRS(argc, argv);
 
        if (!notitle)
-               printf(_("Parallelizing fsck version %s (%s)\n"),
-                       E2FSPROGS_VERSION, E2FSPROGS_DATE);
+               printf("fsck %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 
        fstab = getenv("FSTAB_FILE");
        if (!fstab)
@@ -1021,6 +1099,10 @@ int main(int argc, char *argv[])
        if (doall)
                return check_all();
 
+       if (num_devices == 0) {
+               fprintf(stderr, _("\nNo devices specified to be checked!\n"));
+               exit(EXIT_ERROR);
+       }
        for (i = 0 ; i < num_devices; i++) {
                fsck_device(devices[i], interactive);
                if (serialize) {