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Allow tune2fs to set and clear the test_fs flag on ext4 filesystems
[tools/e2fsprogs.git] / misc / tune2fs.c
index 5885a19..d6999e5 100644 (file)
@@ -25,6 +25,8 @@
  * 94/03/06    - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  */
 
+#define _XOPEN_SOURCE 500 /* for inclusion of strptime() */
+#define _BSD_SOURCE /* for inclusion of strcasecmp() */
 #include <fcntl.h>
 #include <grp.h>
 #ifdef HAVE_GETOPT_H
@@ -48,43 +50,64 @@ extern int optind;
 #include "e2p/e2p.h"
 #include "jfs_user.h"
 #include "util.h"
+#include "blkid/blkid.h"
 
 #include "../version.h"
 #include "nls-enable.h"
 
+/* 
+ * Tune2fs supports these features in addition to the standard features.
+ */
+#define EXT2_TUNE2FS_INCOMPAT  (EXT3_FEATURE_INCOMPAT_EXTENTS)
+#define EXT2_TUNE2FS_RO_COMPAT (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
+                                EXT4_FEATURE_RO_COMPAT_GDT_CSUM|       \
+                                EXT4_FEATURE_RO_COMPAT_DIR_NLINK|      \
+                                EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)
+
+
 const char * program_name = "tune2fs";
 char * device_name;
 char * new_label, *new_last_mounted, *new_UUID;
+char * io_options;
 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
-static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag;
+static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
+static time_t last_check_time;
 static int print_label;
 static int max_mount_count, mount_count, mount_flags;
-static unsigned long interval, reserved_ratio, reserved_blocks;
+static unsigned long interval, reserved_blocks;
+static double reserved_ratio;
 static unsigned long resgid, resuid;
 static unsigned short errors;
 static int open_flag;
 static char *features_cmd;
+static char *mntopts_cmd;
+static char *extended_cmd;
 
 int journal_size, journal_flags;
 char *journal_device;
 
 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
 
+void do_findfs(int argc, char **argv);
+
 static void usage(void)
 {
        fprintf(stderr,
-               _("Usage: %s [-c max-mounts-count] [-e errors-behavior] "
+               _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
                  "[-g group]\n"
-                "\t[-i interval[d|m|w]] [-j] [-J journal-options]\n"
-                "\t[-l] [-s sparse-flag] [-m reserved-blocks-percent]\n"
-                 "\t[-r reserved-blocks-count] [-u user] [-C mount-count]\n"
-                 "\t[-L volume-label] [-M last-mounted-dir] [-U UUID]\n"
-                 "\t[-O [^]feature[,...]] device\n"), program_name);
+                 "\t[-i interval[d|m|w]] [-j] [-J journal_options]\n"
+                 "\t[-l] [-s sparse_flag] [-m reserved_blocks_percent]\n"
+                 "\t[-o [^]mount_options[,...]] [-r reserved_blocks_count]\n"
+                 "\t[-u user] [-C mount_count] [-L volume_label]\n"
+                 "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
+                 "\t[-E extended-option[,...]] [-T last_check_time] "
+                 "[-U UUID] device\n"), program_name);
        exit (1);
 }
 
 static __u32 ok_features[3] = {
-       EXT3_FEATURE_COMPAT_HAS_JOURNAL,        /* Compat */
+       EXT3_FEATURE_COMPAT_HAS_JOURNAL |
+               EXT2_FEATURE_COMPAT_DIR_INDEX,  /* Compat */
        EXT2_FEATURE_INCOMPAT_FILETYPE,         /* Incompat */
        EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER     /* R/O compat */
 };
@@ -94,32 +117,45 @@ static __u32 ok_features[3] = {
  */
 static void remove_journal_device(ext2_filsys fs)
 {
-       char            *journal_device;
+       char            *journal_path;
        ext2_filsys     jfs;
        char            buf[1024];
        journal_superblock_t    *jsb;
        int             i, nr_users;
        errcode_t       retval;
        int             commit_remove_journal = 0;
+       io_manager      io_ptr;
 
        if (f_flag)
                commit_remove_journal = 1; /* force removal even if error */
 
-       journal_device = ext2fs_find_block_device(fs->super->s_journal_dev);
-       if (!journal_device)
-               return;
+       uuid_unparse(fs->super->s_journal_uuid, buf);
+       journal_path = blkid_get_devname(NULL, "UUID", buf);
 
-       retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
+       if (!journal_path) {
+               journal_path =
+                       ext2fs_find_block_device(fs->super->s_journal_dev);
+               if (!journal_path)
+                       return;
+       }
+
+#ifdef CONFIG_TESTIO_DEBUG
+       io_ptr = test_io_manager;
+       test_io_backing_manager = unix_io_manager;
+#else
+       io_ptr = unix_io_manager;
+#endif
+       retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
                             EXT2_FLAG_JOURNAL_DEV_OK, 0,
-                            fs->blocksize, unix_io_manager, &jfs);
+                            fs->blocksize, io_ptr, &jfs);
        if (retval) {
                com_err(program_name, retval,
                        _("while trying to open external journal"));
                goto no_valid_journal;
        }
        if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
-               fprintf(stderr, "%s is not a journal device.\n",
-                       journal_device);
+               fprintf(stderr, _("%s is not a journal device.\n"),
+                       journal_path);
                goto no_valid_journal;
        }
 
@@ -133,7 +169,7 @@ static void remove_journal_device(ext2_filsys fs)
        jsb = (journal_superblock_t *) buf;
        if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
            (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
-               fprintf(stderr, _("Journal superblock not found!\n"));
+               fputs(_("Journal superblock not found!\n"), stderr);
                goto no_valid_journal;
        }
 
@@ -145,7 +181,8 @@ static void remove_journal_device(ext2_filsys fs)
                        break;
        }
        if (i >= nr_users) {
-               fprintf(stderr, "Filesystem's UUID not found on journal device.\n");
+               fputs(_("Filesystem's UUID not found on journal device.\n"), 
+                     stderr);
                commit_remove_journal = 1;
                goto no_valid_journal;
        }
@@ -165,16 +202,90 @@ static void remove_journal_device(ext2_filsys fs)
 
 no_valid_journal:
        if (commit_remove_journal == 0) {
-               printf(_("Journal NOT removed\n"));
+               fputs(_("Journal NOT removed\n"), stderr);
                exit(1);
        }
        fs->super->s_journal_dev = 0;
-       memset(fs->super->s_journal_uuid, 0,
-              sizeof(fs->super->s_journal_uuid));
+       uuid_clear(fs->super->s_journal_uuid);
        ext2fs_mark_super_dirty(fs);
-       printf(_("Journal removed\n"));
+       fputs(_("Journal removed\n"), stdout);
+       free(journal_path);
 }
 
+/* Helper function for remove_journal_inode */
+static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
+                              int blockcnt EXT2FS_ATTR((unused)), 
+                              void *private EXT2FS_ATTR((unused)))
+{
+       blk_t   block;
+       int     group;
+
+       block = *blocknr;
+       ext2fs_unmark_block_bitmap(fs->block_map,block);
+       group = ext2fs_group_of_blk(fs, block);
+       fs->group_desc[group].bg_free_blocks_count++;
+       fs->super->s_free_blocks_count++;
+       return 0;
+}
+
+/*
+ * Remove the journal inode from the filesystem
+ */
+static void remove_journal_inode(ext2_filsys fs)
+{
+       struct ext2_inode       inode;
+       errcode_t               retval;
+       ino_t                   ino = fs->super->s_journal_inum;
+       
+       retval = ext2fs_read_inode(fs, ino,  &inode);
+       if (retval) {
+               com_err(program_name, retval,
+                       _("while reading journal inode"));
+               exit(1);
+       }
+       if (ino == EXT2_JOURNAL_INO) {
+               retval = ext2fs_read_bitmaps(fs);
+               if (retval) {
+                       com_err(program_name, retval,
+                               _("while reading bitmaps"));
+                       exit(1);
+               }
+               retval = ext2fs_block_iterate(fs, ino, 0, NULL,
+                                             release_blocks_proc, NULL);
+               if (retval) {
+                       com_err(program_name, retval,
+                               _("while clearing journal inode"));
+                       exit(1);
+               }
+               memset(&inode, 0, sizeof(inode));
+               ext2fs_mark_bb_dirty(fs);
+               fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
+       } else
+               inode.i_flags &= ~EXT2_IMMUTABLE_FL;
+       retval = ext2fs_write_inode(fs, ino, &inode);
+       if (retval) {
+               com_err(program_name, retval,
+                       _("while writing journal inode"));
+               exit(1);
+       }
+       fs->super->s_journal_inum = 0;
+       ext2fs_mark_super_dirty(fs);
+}
+
+/*
+ * Update the default mount options
+ */
+static void update_mntopts(ext2_filsys fs, char *mntopts)
+{
+       struct ext2_super_block *sb= fs->super;
+
+       if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
+               fprintf(stderr, _("Invalid mount option set: %s\n"),
+                       mntopts);
+               exit(1);
+       }
+       ext2fs_mark_super_dirty(fs);
+}
 
 /*
  * Update the feature set as provided by the user.
@@ -182,10 +293,13 @@ no_valid_journal:
 static void update_feature_set(ext2_filsys fs, char *features)
 {
        int sparse, old_sparse, filetype, old_filetype;
-       int journal, old_journal;
-       struct ext2_inode       inode;
+       int journal, old_journal, dxdir, old_dxdir;
        struct ext2_super_block *sb= fs->super;
-       errcode_t               retval;
+       __u32   old_compat, old_incompat, old_ro_compat;
+
+       old_compat = sb->s_feature_compat;
+       old_ro_compat = sb->s_feature_ro_compat;
+       old_incompat = sb->s_feature_incompat;
 
        old_sparse = sb->s_feature_ro_compat &
                EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
@@ -193,6 +307,8 @@ static void update_feature_set(ext2_filsys fs, char *features)
                EXT2_FEATURE_INCOMPAT_FILETYPE;
        old_journal = sb->s_feature_compat &
                EXT3_FEATURE_COMPAT_HAS_JOURNAL;
+       old_dxdir = sb->s_feature_compat &
+               EXT2_FEATURE_COMPAT_DIR_INDEX;
        if (e2p_edit_feature(features, &sb->s_feature_compat,
                             ok_features)) {
                fprintf(stderr, _("Invalid filesystem option set: %s\n"),
@@ -205,46 +321,30 @@ static void update_feature_set(ext2_filsys fs, char *features)
                EXT2_FEATURE_INCOMPAT_FILETYPE;
        journal = sb->s_feature_compat &
                EXT3_FEATURE_COMPAT_HAS_JOURNAL;
+       dxdir = sb->s_feature_compat &
+               EXT2_FEATURE_COMPAT_DIR_INDEX;
        if (old_journal && !journal) {
                if ((mount_flags & EXT2_MF_MOUNTED) &&
                    !(mount_flags & EXT2_MF_READONLY)) {
-                       fprintf(stderr,
-                               _("The has_journal flag may only be "
-                                 "cleared when the filesystem is\n"
-                                 "unmounted or mounted "
-                                 "read-only.\n"));
+                       fputs(_("The has_journal flag may only be "
+                               "cleared when the filesystem is\n"
+                               "unmounted or mounted "
+                               "read-only.\n"), stderr);
                        exit(1);
                }
                if (sb->s_feature_incompat &
                    EXT3_FEATURE_INCOMPAT_RECOVER) {
-                       fprintf(stderr,
-                               _("The needs_recovery flag is set.  "
-                                 "Please run e2fsck before clearing\n"
-                                 "the HAS_JOURNAL flag.\n"));
+                       fputs(_("The needs_recovery flag is set.  "
+                               "Please run e2fsck before clearing\n"
+                               "the has_journal flag.\n"), stderr);
                        exit(1);
                }
-               /*
-                * Remove the immutable flag on the journal inode
-                */
                if (sb->s_journal_inum) {
-                       retval = ext2fs_read_inode(fs, sb->s_journal_inum, 
-                                                  &inode);
-                       if (retval) {
-                               com_err(program_name, retval,
-                                       "while reading journal inode");
-                               exit(1);
-                       }
-                       inode.i_flags &= ~EXT2_IMMUTABLE_FL;
-                       retval = ext2fs_write_inode(fs, sb->s_journal_inum, 
-                                                   &inode);
-                       if (retval) {
-                               com_err(program_name, retval,
-                                       "while writing journal inode");
-                               exit(1);
-                       }
+                       remove_journal_inode(fs);
                }
-               if (sb->s_journal_dev)
+               if (sb->s_journal_dev) {
                        remove_journal_device(fs);
+               }
        }
        if (journal && !old_journal) {
                /*
@@ -256,7 +356,12 @@ static void update_feature_set(ext2_filsys fs, char *features)
                if (!journal_size)
                        journal_size = -1;
                sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
-               journal = old_journal;
+       }
+       if (dxdir && !old_dxdir) {
+               if (!sb->s_def_hash_version)
+                       sb->s_def_hash_version = EXT2_HASH_TEA;
+               if (uuid_is_null((unsigned char *) sb->s_hash_seed))
+                       uuid_generate((unsigned char *) sb->s_hash_seed);
        }
 
        if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
@@ -264,12 +369,14 @@ static void update_feature_set(ext2_filsys fs, char *features)
             sb->s_feature_incompat))
                ext2fs_update_dynamic_rev(fs);
        if ((sparse != old_sparse) ||
-           (filetype != old_filetype) ||
-           (journal != old_journal)) {
+           (filetype != old_filetype)) {
                sb->s_state &= ~EXT2_VALID_FS;
                printf("\n%s\n", _(please_fsck));
        }
-       ext2fs_mark_super_dirty(fs);
+       if ((old_compat != sb->s_feature_compat) ||
+           (old_ro_compat != sb->s_feature_ro_compat) ||
+           (old_incompat != sb->s_feature_incompat))
+               ext2fs_mark_super_dirty(fs);
 }
 
 /*
@@ -280,51 +387,58 @@ static void add_journal(ext2_filsys fs)
        unsigned long journal_blocks;
        errcode_t       retval;
        ext2_filsys     jfs;
+       io_manager      io_ptr;
 
        if (fs->super->s_feature_compat &
            EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
-               fprintf(stderr, _("The filesystem already has a journal.\n"));
-               exit(1);
+               fputs(_("The filesystem already has a journal.\n"), stderr);
+               goto err;
        }
        if (journal_device) {
                check_plausibility(journal_device);
                check_mount(journal_device, 0, _("journal"));
+#ifdef CONFIG_TESTIO_DEBUG
+               io_ptr = test_io_manager;
+               test_io_backing_manager = unix_io_manager;
+#else
+               io_ptr = unix_io_manager;
+#endif
                retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
                                     EXT2_FLAG_JOURNAL_DEV_OK, 0,
-                                    fs->blocksize, unix_io_manager, &jfs);
+                                    fs->blocksize, io_ptr, &jfs);
                if (retval) {
                        com_err(program_name, retval,
                                _("\n\twhile trying to open journal on %s\n"),
                                journal_device);
-                       exit(1);
+                       goto err;
                }
                printf(_("Creating journal on device %s: "),
                       journal_device);
                fflush(stdout);
-               
+
                retval = ext2fs_add_journal_device(fs, jfs);
+               ext2fs_close(jfs);
                if (retval) {
                        com_err (program_name, retval,
                                 _("while adding filesystem to journal on %s"),
                                 journal_device);
-                       exit(1);
+                       goto err;
                }
-               printf(_("done\n"));
-               ext2fs_close(jfs);
+               fputs(_("done\n"), stdout);
        } else if (journal_size) {
-               printf(_("Creating journal inode: "));
+               fputs(_("Creating journal inode: "), stdout);
                fflush(stdout);
                journal_blocks = figure_journal_size(journal_size, fs);
 
                retval = ext2fs_add_journal_inode(fs, journal_blocks,
                                                  journal_flags);
                if (retval) {
-                       printf("\n");
+                       fprintf(stderr, "\n");
                        com_err(program_name, retval,
                                _("\n\twhile trying to create journal file"));
                        exit(1);
                } else
-                       printf(_("done\n"));
+                       fputs(_("done\n"), stdout);
                /*
                 * If the filesystem wasn't mounted, we need to force
                 * the block group descriptors out.
@@ -332,38 +446,68 @@ static void add_journal(ext2_filsys fs)
                if ((mount_flags & EXT2_MF_MOUNTED) == 0)
                        fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
        }
-}
+       print_check_message(fs);
+       return;
 
-/*
- * Given argv[0], return the program name.
- */
-static char *get_progname(char *argv_zero)
-{
-       char    *cp;
-
-       cp = strrchr(argv_zero, '/');
-       if (!cp )
-               return argv_zero;
-       else
-               return cp+1;
+err:
+       if (journal_device)
+               free(journal_device);
+       exit(1);
 }
 
 
 static void parse_e2label_options(int argc, char ** argv)
 {
        if ((argc < 2) || (argc > 3)) {
-               fprintf(stderr, _("Usage: e2label device [newlabel]\n"));
+               fputs(_("Usage: e2label device [newlabel]\n"), stderr);
+               exit(1);
+       }
+       io_options = strchr(argv[1], '?');
+       if (io_options)
+               *io_options++ = 0;
+       device_name = blkid_get_devname(NULL, argv[1], NULL);
+       if (!device_name) {
+               com_err("e2label", 0, _("Unable to resolve '%s'"), 
+                       argv[1]);
                exit(1);
        }
-       device_name = argv[1];
+       open_flag = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_JOURNAL_DEV_OK;
        if (argc == 3) {
-               open_flag = EXT2_FLAG_RW;
+               open_flag |= EXT2_FLAG_RW;
                L_flag = 1;
                new_label = argv[2];
        } else 
                print_label++;
 }
 
+static time_t parse_time(char *str)
+{
+       struct  tm      ts;
+
+       if (strcmp(str, "now") == 0) {
+               return (time(0));
+       }
+       memset(&ts, 0, sizeof(ts));
+#ifdef HAVE_STRPTIME
+       strptime(str, "%Y%m%d%H%M%S", &ts);
+#else
+       sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
+              &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
+       ts.tm_year -= 1900;
+       ts.tm_mon -= 1;
+       if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
+           ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
+           ts.tm_min > 59 || ts.tm_sec > 61)
+               ts.tm_mday = 0;
+#endif
+       if (ts.tm_mday == 0) {
+               com_err(program_name, 0,
+                       _("Couldn't parse date/time specifier: %s"),
+                       str);
+               usage();
+       }
+       return (mktime(&ts));
+}
 
 static void parse_tune2fs_options(int argc, char **argv)
 {
@@ -372,10 +516,10 @@ static void parse_tune2fs_options(int argc, char **argv)
        struct group * gr;
        struct passwd * pw;
 
-       fprintf (stderr, _("tune2fs %s, %s for EXT2 FS %s, %s\n"),
-                E2FSPROGS_VERSION, E2FSPROGS_DATE,
-                EXT2FS_VERSION, EXT2FS_DATE);
-       while ((c = getopt (argc, argv, "c:e:fg:i:jlm:r:s:u:C:J:L:M:O:U:")) != EOF)
+       open_flag = EXT2_FLAG_SOFTSUPP_FEATURES;
+
+       printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
+       while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:J:L:M:O:T:U:")) != EOF)
                switch (c)
                {
                        case 'c':
@@ -418,6 +562,10 @@ static void parse_tune2fs_options(int argc, char **argv)
                                e_flag = 1;
                                open_flag = EXT2_FLAG_RW;
                                break;
+                       case 'E':
+                               extended_cmd = optarg;
+                               open_flag |= EXT2_FLAG_RW;
+                               break;
                        case 'f': /* Force */
                                f_flag = 1;
                                break;
@@ -465,7 +613,7 @@ static void parse_tune2fs_options(int argc, char **argv)
                                        tmp++;
                                        break;
                                }
-                               if (*tmp || interval > (365 * 86400)) {
+                               if (*tmp) {
                                        com_err (program_name, 0,
                                                _("bad interval - %s"), optarg);
                                        usage();
@@ -488,10 +636,11 @@ static void parse_tune2fs_options(int argc, char **argv)
                        case 'L':
                                new_label = optarg;
                                L_flag = 1;
-                               open_flag = EXT2_FLAG_RW;
+                               open_flag |= EXT2_FLAG_RW |
+                                       EXT2_FLAG_JOURNAL_DEV_OK;
                                break;
                        case 'm':
-                               reserved_ratio = strtoul (optarg, &tmp, 0);
+                               reserved_ratio = strtod(optarg, &tmp);
                                if (*tmp || reserved_ratio > 50) {
                                        com_err (program_name, 0,
                                                 _("bad reserved block ratio - %s"),
@@ -506,7 +655,22 @@ static void parse_tune2fs_options(int argc, char **argv)
                                M_flag = 1;
                                open_flag = EXT2_FLAG_RW;
                                break;
+                       case 'o':
+                               if (mntopts_cmd) {
+                                       com_err (program_name, 0,
+                                        _("-o may only be specified once"));
+                                       usage();
+                               }
+                               mntopts_cmd = optarg;
+                               open_flag = EXT2_FLAG_RW;
+                               break;
+                               
                        case 'O':
+                               if (features_cmd) {
+                                       com_err (program_name, 0,
+                                        _("-O may only be specified once"));
+                                       usage();
+                               }
                                features_cmd = optarg;
                                open_flag = EXT2_FLAG_RW;
                                break;
@@ -525,6 +689,11 @@ static void parse_tune2fs_options(int argc, char **argv)
                                s_flag = atoi(optarg);
                                open_flag = EXT2_FLAG_RW;
                                break;
+                       case 'T':
+                               T_flag = 1;
+                               last_check_time = parse_time(optarg);
+                               open_flag = EXT2_FLAG_RW;
+                               break;
                        case 'u':
                                resuid = strtoul (optarg, &tmp, 0);
                                if (*tmp) {
@@ -548,7 +717,8 @@ static void parse_tune2fs_options(int argc, char **argv)
                        case 'U':
                                new_UUID = optarg;
                                U_flag = 1;
-                               open_flag = EXT2_FLAG_RW;
+                               open_flag = EXT2_FLAG_RW |
+                                       EXT2_FLAG_JOURNAL_DEV_OK;
                                break;
                        default:
                                usage();
@@ -557,9 +727,92 @@ static void parse_tune2fs_options(int argc, char **argv)
                usage();
        if (!open_flag && !l_flag)
                usage();
-       device_name = argv[optind];
-}      
+       io_options = strchr(argv[optind], '?');
+       if (io_options)
+               *io_options++ = 0;
+       device_name = blkid_get_devname(NULL, argv[optind], NULL);
+       if (!device_name) {
+               com_err("tune2fs", 0, _("Unable to resolve '%s'"), 
+                       argv[optind]);
+               exit(1);
+       }
+}
 
+void do_findfs(int argc, char **argv)
+{
+       char    *dev;
+
+       if ((argc != 2) ||
+           (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
+               fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
+               exit(2);
+       }
+       dev = blkid_get_devname(NULL, argv[1], NULL);
+       if (!dev) {
+               com_err("findfs", 0, _("Unable to resolve '%s'"), 
+                       argv[1]);
+               exit(1);
+       }
+       puts(dev);
+       exit(0);
+}
+
+/*
+ * Note!  If any extended options are incompatible with the
+ * intersection of the SOFTSUPP features and those features explicitly
+ * enabled for tune2fs, there needs to be an explicit test for them
+ * here.
+ */
+static void parse_extended_opts(ext2_filsys fs, const char *opts)
+{
+       char    *buf, *token, *next, *p, *arg;
+       int     len;
+       int     r_usage = 0;
+
+       len = strlen(opts);
+       buf = malloc(len+1);
+       if (!buf) {
+               fprintf(stderr,
+                       _("Couldn't allocate memory to parse options!\n"));
+               exit(1);
+       }
+       strcpy(buf, opts);
+       for (token = buf; token && *token; token = next) {
+               p = strchr(token, ',');
+               next = 0;
+               if (p) {
+                       *p = 0;
+                       next = p+1;
+               }
+               arg = strchr(token, '=');
+               if (arg) {
+                       *arg = 0;
+                       arg++;
+               }
+               if (!strcmp(token, "test_fs")) {
+                       fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
+                       printf("Setting test filesystem flag\n");
+                       ext2fs_mark_super_dirty(fs);
+               } else if (!strcmp(token, "^test_fs")) {
+                       fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
+                       printf("Clearing test filesystem flag\n");
+                       ext2fs_mark_super_dirty(fs);
+               } else
+                       r_usage++;
+       }
+       if (r_usage) {
+               fprintf(stderr, _("\nBad options specified.\n\n"
+                       "Extended options are separated by commas, "
+                       "and may take an argument which\n"
+                       "\tis set off by an equals ('=') sign.\n\n"
+                       "Valid extended options are:\n"
+                       "\ttest_fs\n"
+                       "\t^test_fs\n"));
+               free(buf);
+               exit(1);
+       }
+       free(buf);
+}      
 
 
 int main (int argc, char ** argv)
@@ -567,34 +820,54 @@ int main (int argc, char ** argv)
        errcode_t retval;
        ext2_filsys fs;
        struct ext2_super_block *sb;
+       io_manager io_ptr;
 
 #ifdef ENABLE_NLS
        setlocale(LC_MESSAGES, "");
+       setlocale(LC_CTYPE, "");
        bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
        textdomain(NLS_CAT_NAME);
 #endif
        if (argc && *argv)
                program_name = *argv;
-       initialize_ext2_error_table();
+       add_error_table(&et_ext2_error_table);
 
+       if (strcmp(get_progname(argv[0]), "findfs") == 0)
+               do_findfs(argc, argv);
        if (strcmp(get_progname(argv[0]), "e2label") == 0)
                parse_e2label_options(argc, argv);
        else
                parse_tune2fs_options(argc, argv);
        
-       retval = ext2fs_open (device_name, open_flag, 0, 0,
-                             unix_io_manager, &fs);
+#ifdef CONFIG_TESTIO_DEBUG
+       io_ptr = test_io_manager;
+       test_io_backing_manager = unix_io_manager;
+#else
+       io_ptr = unix_io_manager;
+#endif
+       retval = ext2fs_open2(device_name, io_options, open_flag, 
+                             0, 0, io_ptr, &fs);
         if (retval) {
                com_err (program_name, retval, _("while trying to open %s"),
                         device_name);
-               printf(_("Couldn't find valid filesystem superblock.\n"));
+               fprintf(stderr,
+                       _("Couldn't find valid filesystem superblock.\n"));
                exit(1);
        }
        sb = fs->super;
+       fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
+       if ((sb->s_feature_incompat & !EXT2_TUNE2FS_INCOMPAT) ||
+           (sb->s_feature_ro_compat & !EXT2_TUNE2FS_RO_COMPAT)) {
+               fprintf(stderr, 
+                       _("Filesystem %s has unsupported features enabled.\n"),
+                       device_name);
+               exit(1);
+       }
        if (print_label) {
                /* For e2label emulation */
                printf("%.*s\n", (int) sizeof(sb->s_volume_name),
                       sb->s_volume_name);
+               remove_error_table(&et_ext2_error_table);
                exit(0);
        }
        retval = ext2fs_check_if_mounted(device_name, &mount_flags);
@@ -631,19 +904,19 @@ int main (int argc, char ** argv)
        if (i_flag) {
                sb->s_checkinterval = interval;
                ext2fs_mark_super_dirty(fs);
-               printf (_("Setting interval between check %lu seconds\n"), interval);
+               printf (_("Setting interval between checks to %lu seconds\n"), interval);
        }
        if (m_flag) {
-               sb->s_r_blocks_count = (sb->s_blocks_count / 100)
-                       * reserved_ratio;
+               sb->s_r_blocks_count = e2p_percent(reserved_ratio,
+                                                  sb->s_blocks_count);
                ext2fs_mark_super_dirty(fs);
-               printf (_("Setting reserved blocks percentage to %lu (%u blocks)\n"),
+               printf (_("Setting reserved blocks percentage to %g%% (%u blocks)\n"),
                        reserved_ratio, sb->s_r_blocks_count);
        }
        if (r_flag) {
-               if (reserved_blocks >= sb->s_blocks_count) {
+               if (reserved_blocks >= sb->s_blocks_count/2) {
                        com_err (program_name, 0,
-                                _("reserved blocks count is too big (%ul)"),
+                                _("reserved blocks count is too big (%lu)"),
                                 reserved_blocks);
                        exit (1);
                }
@@ -655,8 +928,8 @@ int main (int argc, char ** argv)
        if (s_flag == 1) {
                if (sb->s_feature_ro_compat &
                    EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
-                       fprintf(stderr, _("\nThe filesystem already"
-                               " has sparse superblocks.\n"));
+                       fputs(_("\nThe filesystem already has sparse "
+                               "superblocks.\n"), stderr);
                else {
                        sb->s_feature_ro_compat |=
                                EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
@@ -669,8 +942,8 @@ int main (int argc, char ** argv)
        if (s_flag == 0) {
                if (!(sb->s_feature_ro_compat &
                      EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
-                       fprintf(stderr, _("\nThe filesystem already"
-                               " has sparse superblocks disabled.\n"));
+                       fputs(_("\nThe filesystem already has sparse "
+                               "superblocks disabled.\n"), stderr);
                else {
                        sb->s_feature_ro_compat &=
                                ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
@@ -681,6 +954,12 @@ int main (int argc, char ** argv)
                               _(please_fsck));
                }
        }
+       if (T_flag) {
+               sb->s_lastcheck = last_check_time;
+               ext2fs_mark_super_dirty(fs);
+               printf(_("Setting time filesystem last checked to %s\n"),
+                      ctime(&last_check_time));
+       }
        if (u_flag) {
                sb->s_def_resuid = resuid;
                ext2fs_mark_super_dirty(fs);
@@ -688,8 +967,8 @@ int main (int argc, char ** argv)
        }
        if (L_flag) {
                if (strlen(new_label) > sizeof(sb->s_volume_name))
-                       fprintf(stderr, _("Warning: label too "
-                               "long, truncating.\n"));
+                       fputs(_("Warning: label too long, truncating.\n"), 
+                             stderr);
                memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
                strncpy(sb->s_volume_name, new_label,
                        sizeof(sb->s_volume_name));
@@ -701,8 +980,12 @@ int main (int argc, char ** argv)
                        sizeof(sb->s_last_mounted));
                ext2fs_mark_super_dirty(fs);
        }
+       if (mntopts_cmd)
+               update_mntopts(fs, mntopts_cmd);
        if (features_cmd)
                update_feature_set(fs, features_cmd);
+       if (extended_cmd)
+               parse_extended_opts(fs, extended_cmd);
        if (journal_size || journal_device)
                add_journal(fs);
        
@@ -723,6 +1006,6 @@ int main (int argc, char ** argv)
 
        if (l_flag)
                list_super (sb);
-       ext2fs_close (fs);
-       exit (0);
+       remove_error_table(&et_ext2_error_table);
+       return (ext2fs_close (fs) ? 1 : 0);
 }