diff options
| -rw-r--r-- | fs/ext3/super.c | 70 | ||||
| -rw-r--r-- | include/linux/ext3_fs.h | 14 |
2 files changed, 74 insertions, 10 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c index a6d1779d7de..3c3c6e399fb 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -890,7 +890,10 @@ clear_qf_name: "quota turned on.\n"); return 0; } - kfree(sbi->s_qf_names[qtype]); + /* + * The space will be released later when all options + * are confirmed to be correct + */ sbi->s_qf_names[qtype] = NULL; break; case Opt_jqfmt_vfsold: @@ -939,7 +942,7 @@ clear_qf_name: case Opt_ignore: break; case Opt_resize: - if (!n_blocks_count) { + if (!is_remount) { printk("EXT3-fs: resize option only available " "for remount\n"); return 0; @@ -2109,14 +2112,33 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data) { struct ext3_super_block * es; struct ext3_sb_info *sbi = EXT3_SB(sb); - unsigned long tmp; unsigned long n_blocks_count = 0; + unsigned long old_sb_flags; + struct ext3_mount_options old_opts; + int err; +#ifdef CONFIG_QUOTA + int i; +#endif + + /* Store the original options */ + old_sb_flags = sb->s_flags; + old_opts.s_mount_opt = sbi->s_mount_opt; + old_opts.s_resuid = sbi->s_resuid; + old_opts.s_resgid = sbi->s_resgid; + old_opts.s_commit_interval = sbi->s_commit_interval; +#ifdef CONFIG_QUOTA + old_opts.s_jquota_fmt = sbi->s_jquota_fmt; + for (i = 0; i < MAXQUOTAS; i++) + old_opts.s_qf_names[i] = sbi->s_qf_names[i]; +#endif /* * Allow the "check" option to be passed as a remount option. */ - if (!parse_options(data, sb, &tmp, &n_blocks_count, 1)) - return -EINVAL; + if (!parse_options(data, sb, NULL, &n_blocks_count, 1)) { + err = -EINVAL; + goto restore_opts; + } if (sbi->s_mount_opt & EXT3_MOUNT_ABORT) ext3_abort(sb, __FUNCTION__, "Abort forced by user"); @@ -2130,8 +2152,10 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data) if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) || n_blocks_count > le32_to_cpu(es->s_blocks_count)) { - if (sbi->s_mount_opt & EXT3_MOUNT_ABORT) - return -EROFS; + if (sbi->s_mount_opt & EXT3_MOUNT_ABORT) { + err = -EROFS; + goto restore_opts; + } if (*flags & MS_RDONLY) { /* @@ -2158,7 +2182,8 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data) "remount RDWR because of unsupported " "optional features (%x).\n", sb->s_id, le32_to_cpu(ret)); - return -EROFS; + err = -EROFS; + goto restore_opts; } /* * Mounting a RDONLY partition read-write, so reread @@ -2168,13 +2193,38 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data) */ ext3_clear_journal_err(sb, es); sbi->s_mount_state = le16_to_cpu(es->s_state); - if ((ret = ext3_group_extend(sb, es, n_blocks_count))) - return ret; + if ((ret = ext3_group_extend(sb, es, n_blocks_count))) { + err = ret; + goto restore_opts; + } if (!ext3_setup_super (sb, es, 0)) sb->s_flags &= ~MS_RDONLY; } } +#ifdef CONFIG_QUOTA + /* Release old quota file names */ + for (i = 0; i < MAXQUOTAS; i++) + if (old_opts.s_qf_names[i] && + old_opts.s_qf_names[i] != sbi->s_qf_names[i]) + kfree(old_opts.s_qf_names[i]); +#endif return 0; +restore_opts: + sb->s_flags = old_sb_flags; + sbi->s_mount_opt = old_opts.s_mount_opt; + sbi->s_resuid = old_opts.s_resuid; + sbi->s_resgid = old_opts.s_resgid; + sbi->s_commit_interval = old_opts.s_commit_interval; +#ifdef CONFIG_QUOTA + sbi->s_jquota_fmt = old_opts.s_jquota_fmt; + for (i = 0; i < MAXQUOTAS; i++) { + if (sbi->s_qf_names[i] && + old_opts.s_qf_names[i] != sbi->s_qf_names[i]) + kfree(sbi->s_qf_names[i]); + sbi->s_qf_names[i] = old_opts.s_qf_names[i]; + } +#endif + return err; } static int ext3_statfs (struct super_block * sb, struct kstatfs * buf) diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h index 4b6e1ab216a..c16662836c5 100644 --- a/include/linux/ext3_fs.h +++ b/include/linux/ext3_fs.h @@ -239,6 +239,20 @@ struct ext3_new_group_data { #define EXT3_IOC_SETRSVSZ _IOW('f', 6, long) /* + * Mount options + */ +struct ext3_mount_options { + unsigned long s_mount_opt; + uid_t s_resuid; + gid_t s_resgid; + unsigned long s_commit_interval; +#ifdef CONFIG_QUOTA + int s_jquota_fmt; + char *s_qf_names[MAXQUOTAS]; +#endif +}; + +/* * Structure of an inode on the disk */ struct ext3_inode { |