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filefrag: fix extent count calculation when using FIBMAP
[tools/e2fsprogs.git] / misc / tune2fs.c
index 64a76f1..b65dab9 100644 (file)
@@ -60,7 +60,7 @@ extern int optind;
 #include "jfs_user.h"
 #include "util.h"
 #include "blkid/blkid.h"
-#include "quota/mkquota.h"
+#include "quota/quotaio.h"
 
 #include "../version.h"
 #include "nls-enable.h"
@@ -175,6 +175,50 @@ static __u32 clear_ok_features[3] = {
                EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 };
 
+/**
+ * Try to get journal super block if any
+ */
+static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
+{
+       int retval;
+       int start;
+       journal_superblock_t *jsb;
+
+       if (!(jfs->super->s_feature_incompat &
+           EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
+               return EXT2_ET_UNSUPP_FEATURE;
+       }
+
+       /* Get the journal superblock */
+       if ((retval = io_channel_read_blk64(jfs->io,
+           ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
+               com_err(program_name, retval, "%s",
+               _("while reading journal superblock"));
+               return retval;
+       }
+
+       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))) {
+               fputs(_("Journal superblock not found!\n"), stderr);
+               return EXT2_ET_BAD_MAGIC;
+       }
+
+       return 0;
+}
+
+static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
+                         int nr_users)
+{
+       int i;
+       for (i = 0; i < nr_users; i++) {
+               if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
+                       return &s_users[i * UUID_SIZE];
+       }
+
+       return NULL;
+}
+
 /*
  * Remove an external journal from the filesystem
  */
@@ -182,7 +226,7 @@ static int remove_journal_device(ext2_filsys fs)
 {
        char            *journal_path;
        ext2_filsys     jfs;
-       char            buf[1024];
+       char            buf[SUPERBLOCK_SIZE];
        journal_superblock_t    *jsb;
        int             i, nr_users;
        errcode_t       retval;
@@ -217,34 +261,19 @@ static int remove_journal_device(ext2_filsys fs)
                        _("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_path);
-               goto no_valid_journal;
-       }
 
-       /* Get the journal superblock */
-       if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
-               com_err(program_name, retval, "%s",
-                       _("while reading journal superblock"));
+       if ((retval = get_journal_sb(jfs, buf))) {
+               if (retval == EXT2_ET_UNSUPP_FEATURE)
+                       fprintf(stderr, _("%s is not a journal device.\n"),
+                               journal_path);
                goto no_valid_journal;
        }
 
        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))) {
-               fputs(_("Journal superblock not found!\n"), stderr);
-               goto no_valid_journal;
-       }
-
        /* Find the filesystem UUID */
        nr_users = ntohl(jsb->s_nr_users);
-       for (i = 0; i < nr_users; i++) {
-               if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
-                       break;
-       }
-       if (i >= nr_users) {
+
+       if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
                fputs(_("Filesystem's UUID not found on journal device.\n"),
                      stderr);
                commit_remove_journal = 1;
@@ -256,7 +285,10 @@ static int remove_journal_device(ext2_filsys fs)
        jsb->s_nr_users = htonl(nr_users);
 
        /* Write back the journal superblock */
-       if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
+       retval = io_channel_write_blk64(jfs->io,
+                                       ext2fs_journal_sb_start(fs->blocksize),
+                                       -SUPERBLOCK_SIZE, buf);
+       if (retval) {
                com_err(program_name, retval,
                        "while writing journal superblock.");
                goto no_valid_journal;
@@ -369,7 +401,7 @@ static int check_fsck_needed(ext2_filsys fs)
                return 0;
        printf("\n%s\n", _(please_fsck));
        if (mount_flags & EXT2_MF_READONLY)
-               printf(_("(and reboot afterwards!)\n"));
+               printf("%s", _("(and reboot afterwards!)\n"));
        return 1;
 }
 
@@ -437,8 +469,9 @@ static int update_feature_set(ext2_filsys fs, char *features)
                                "read-only.\n"), stderr);
                        return 1;
                }
-               if (sb->s_feature_incompat &
-                   EXT3_FEATURE_INCOMPAT_RECOVER) {
+               if ((sb->s_feature_incompat &
+                   EXT3_FEATURE_INCOMPAT_RECOVER) &&
+                   f_flag < 2) {
                        fputs(_("The needs_recovery flag is set.  "
                                "Please run e2fsck before clearing\n"
                                "the has_journal flag.\n"), stderr);
@@ -453,6 +486,19 @@ static int update_feature_set(ext2_filsys fs, char *features)
                                return 1;
                }
        }
+
+       if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
+               EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
+               if (sb->s_feature_incompat &
+                       EXT2_FEATURE_INCOMPAT_META_BG) {
+                       fputs(_("Setting filesystem feature 'sparse_super' "
+                               "not supported\nfor filesystems with "
+                               "the meta_bg feature enabled.\n"),
+                               stderr);
+                       return 1;
+               }
+       }
+
        if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
                int error;
 
@@ -659,7 +705,9 @@ static int add_journal(ext2_filsys fs)
                goto err;
        }
        if (journal_device) {
-               check_plausibility(journal_device);
+               if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
+                                       NULL))
+                       proceed_question(-1);
                check_mount(journal_device, 0, _("journal"));
 #ifdef CONFIG_TESTIO_DEBUG
                if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
@@ -682,7 +730,7 @@ static int add_journal(ext2_filsys fs)
                fflush(stdout);
 
                retval = ext2fs_add_journal_device(fs, jfs);
-               ext2fs_close(jfs);
+               ext2fs_close_free(&jfs);
                if (retval) {
                        com_err(program_name, retval,
                                _("while adding filesystem to journal on %s"),
@@ -760,10 +808,6 @@ static void handle_quota_options(ext2_filsys fs)
        quota_release_context(&qctx);
 
        if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
-               fprintf(stderr, "%s", _("\nWarning: the quota feature is still "
-                                 "under development\n"
-                                 "See https://ext4.wiki.kernel.org/"
-                                 "index.php/Quota for more information\n\n"));
                fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
                ext2fs_mark_super_dirty(fs);
        } else if (!fs->super->s_usr_quota_inum &&
@@ -935,7 +979,7 @@ static void parse_tune2fs_options(int argc, char **argv)
                        open_flag |= EXT2_FLAG_RW;
                        break;
                case 'f': /* Force */
-                       f_flag = 1;
+                       f_flag++;
                        break;
                case 'g':
                        resgid = strtoul(optarg, &tmp, 0);
@@ -1371,7 +1415,7 @@ static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
 {
        blk64_t start_blk, end_blk;
        start_blk = fs->super->s_first_data_block +
-                       EXT2_BLOCKS_PER_GROUP(fs->super) * group;
+                       EXT2_GROUPS_TO_BLOCKS(fs->super, group);
        /*
         * We cannot get new block beyond end_blk for for the last block group
         * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
@@ -1881,6 +1925,71 @@ static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
        return retval;
 }
 
+int
+fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
+{
+       int retval, nr_users, start;
+       journal_superblock_t *jsb;
+       ext2_filsys jfs;
+       __u8 *j_uuid;
+       char *journal_path;
+       char uuid[UUID_STR_SIZE];
+       char buf[SUPERBLOCK_SIZE];
+
+       if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) ||
+               uuid_is_null(sb->s_journal_uuid))
+               return 0;
+
+       uuid_unparse(sb->s_journal_uuid, uuid);
+       journal_path = blkid_get_devname(NULL, "UUID", uuid);
+       if (!journal_path)
+               return 0;
+
+       retval = ext2fs_open2(journal_path, io_options,
+                             EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
+                             0, 0, unix_io_manager, &jfs);
+       if (retval) {
+               com_err(program_name, retval,
+                       _("while trying to open %s"),
+                       journal_path);
+               return retval;
+       }
+
+       retval = get_journal_sb(jfs, buf);
+       if (retval != 0) {
+               if (retval == EXT2_ET_UNSUPP_FEATURE)
+                       fprintf(stderr, _("%s is not a journal device.\n"),
+                               journal_path);
+               return retval;
+       }
+
+       jsb = (journal_superblock_t *) buf;
+       /* Find the filesystem UUID */
+       nr_users = ntohl(jsb->s_nr_users);
+
+       j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
+       if (j_uuid == NULL) {
+               fputs(_("Filesystem's UUID not found on journal device.\n"),
+                     stderr);
+               return EXT2_ET_LOAD_EXT_JOURNAL;
+       }
+
+       memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
+
+       start = ext2fs_journal_sb_start(jfs->blocksize);
+       /* Write back the journal superblock */
+       retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
+       if (retval != 0) {
+               com_err(program_name, retval,
+                       "while writing journal superblock.");
+               return retval;
+       }
+
+       ext2fs_close(jfs);
+
+       return 0;
+}
+
 int main(int argc, char **argv)
 {
        errcode_t retval;
@@ -1989,7 +2098,7 @@ retry_open:
                        goto closefs;
                }
                if (io_ptr != io_ptr_orig) {
-                       ext2fs_close(fs);
+                       ext2fs_close_free(&fs);
                        goto retry_open;
                }
        }
@@ -2038,7 +2147,7 @@ retry_open:
                printf(_("Setting reserved blocks gid to %lu\n"), resgid);
        }
        if (i_flag) {
-               if (interval >= (1ULL << 32)) {
+               if ((unsigned long long)interval >= (1ULL << 32)) {
                        com_err(program_name, 0,
                                _("interval between checks is too big (%lu)"),
                                interval);
@@ -2072,10 +2181,18 @@ retry_open:
        }
        if (s_flag == 1) {
                if (sb->s_feature_ro_compat &
-                   EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
+                   EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) {
                        fputs(_("\nThe filesystem already has sparse "
                                "superblocks.\n"), stderr);
-               else {
+               } else if (sb->s_feature_incompat &
+                       EXT2_FEATURE_INCOMPAT_META_BG) {
+                       fputs(_("\nSetting the sparse superblock flag not "
+                               "supported\nfor filesystems with "
+                               "the meta_bg feature enabled.\n"),
+                               stderr);
+                       rc = 1;
+                       goto closefs;
+               } else {
                        sb->s_feature_ro_compat |=
                                EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
                        sb->s_state &= ~EXT2_VALID_FS;
@@ -2085,7 +2202,7 @@ retry_open:
                }
        }
        if (s_flag == 0) {
-               fputs(_("\nClearing the sparse superflag not supported.\n"),
+               fputs(_("\nClearing the sparse superblock flag not supported.\n"),
                      stderr);
                rc = 1;
                goto closefs;
@@ -2160,6 +2277,8 @@ retry_open:
        if (U_flag) {
                int set_csum = 0;
                dgrp_t i;
+               char buf[SUPERBLOCK_SIZE];
+               __u8 old_uuid[UUID_SIZE];
 
                if (sb->s_feature_ro_compat &
                    EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
@@ -2187,6 +2306,8 @@ retry_open:
                        if (i >= fs->group_desc_count)
                                set_csum = 1;
                }
+
+               memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
                if ((strcasecmp(new_UUID, "null") == 0) ||
                    (strcasecmp(new_UUID, "clear") == 0)) {
                        uuid_clear(sb->s_uuid);
@@ -2205,6 +2326,29 @@ retry_open:
                                ext2fs_group_desc_csum_set(fs, i);
                        fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
                }
+
+               /* If this is a journal dev, we need to copy UUID into jsb */
+               if (!(rc = get_journal_sb(fs, buf))) {
+                       journal_superblock_t *jsb;
+
+                       jsb = (journal_superblock_t *) buf;
+                       fputs(_("Need to update journal superblock.\n"), stdout);
+                       memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
+
+                       /* Writeback the journal superblock */
+                       if ((rc = io_channel_write_blk64(fs->io,
+                               ext2fs_journal_sb_start(fs->blocksize),
+                                       -SUPERBLOCK_SIZE, buf)))
+                               goto closefs;
+               } else if (rc != EXT2_ET_UNSUPP_FEATURE)
+                       goto closefs;
+               else {
+                       rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
+
+                       if ((rc = fs_update_journal_user(sb, old_uuid)))
+                               goto closefs;
+               }
+
                ext2fs_mark_super_dirty(fs);
        }
        if (I_flag) {
@@ -2269,5 +2413,5 @@ closefs:
                exit(1);
        }
 
-       return (ext2fs_close(fs) ? 1 : 0);
+       return (ext2fs_close_free(&fs) ? 1 : 0);
 }