diff options
Diffstat (limited to 'misc/tune2fs.c')
| -rw-r--r-- | misc/tune2fs.c | 344 |
1 files changed, 321 insertions, 23 deletions
diff --git a/misc/tune2fs.c b/misc/tune2fs.c index cb5f575a..458f7cf6 100644 --- a/misc/tune2fs.c +++ b/misc/tune2fs.c @@ -52,6 +52,9 @@ extern int optind; #include <sys/types.h> #include <libgen.h> #include <limits.h> +#ifdef HAVE_SYS_IOCTL_H +#include <sys/ioctl.h> +#endif #include "ext2fs/ext2_fs.h" #include "ext2fs/ext2fs.h" @@ -71,11 +74,34 @@ extern int optind; #define QOPT_ENABLE (1) #define QOPT_DISABLE (-1) +#ifndef FS_IOC_SETFSLABEL +#define FSLABEL_MAX 256 +#define FS_IOC_SETFSLABEL _IOW(0x94, 50, char[FSLABEL_MAX]) +#endif + +#ifndef FS_IOC_GETFSLABEL +#define FS_IOC_GETFSLABEL _IOR(0x94, 49, char[FSLABEL_MAX]) +#endif + +struct fsuuid { + __u32 fsu_len; + __u32 fsu_flags; + __u8 fsu_uuid[]; +}; + +#ifndef EXT4_IOC_GETFSUUID +#define EXT4_IOC_GETFSUUID _IOR('f', 44, struct fsuuid) +#endif + +#ifndef EXT4_IOC_SETFSUUID +#define EXT4_IOC_SETFSUUID _IOW('f', 44, struct fsuuid) +#endif + extern int ask_yn(const char *string, int def); const char *program_name = "tune2fs"; char *device_name; -char *new_label, *new_last_mounted, *new_UUID; +char *new_label, *new_last_mounted, *requested_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, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag; @@ -107,6 +133,7 @@ int enabling_casefold; int journal_size, journal_fc_size, journal_flags; char *journal_device; static blk64_t journal_location = ~0LL; +static e2_blkcnt_t orphan_file_blocks; static struct list_head blk_move_list; @@ -153,7 +180,8 @@ static __u32 ok_features[3] = { EXT3_FEATURE_COMPAT_HAS_JOURNAL | EXT2_FEATURE_COMPAT_DIR_INDEX | EXT4_FEATURE_COMPAT_FAST_COMMIT | - EXT4_FEATURE_COMPAT_STABLE_INODES, + EXT4_FEATURE_COMPAT_STABLE_INODES | + EXT4_FEATURE_COMPAT_ORPHAN_FILE, /* Incompat */ EXT2_FEATURE_INCOMPAT_FILETYPE | EXT3_FEATURE_INCOMPAT_EXTENTS | @@ -184,13 +212,15 @@ static __u32 clear_ok_features[3] = { EXT3_FEATURE_COMPAT_HAS_JOURNAL | EXT2_FEATURE_COMPAT_RESIZE_INODE | EXT2_FEATURE_COMPAT_DIR_INDEX | - EXT4_FEATURE_COMPAT_FAST_COMMIT, + EXT4_FEATURE_COMPAT_FAST_COMMIT | + EXT4_FEATURE_COMPAT_ORPHAN_FILE, /* Incompat */ EXT2_FEATURE_INCOMPAT_FILETYPE | EXT4_FEATURE_INCOMPAT_FLEX_BG | EXT4_FEATURE_INCOMPAT_MMP | EXT4_FEATURE_INCOMPAT_64BIT | - EXT4_FEATURE_INCOMPAT_CSUM_SEED, + EXT4_FEATURE_INCOMPAT_CSUM_SEED | + EXT4_FEATURE_INCOMPAT_CASEFOLD, /* R/O compat */ EXT2_FEATURE_RO_COMPAT_LARGE_FILE | EXT4_FEATURE_RO_COMPAT_HUGE_FILE| @@ -1009,6 +1039,41 @@ out: return retval; } +static int has_casefold_inode(ext2_filsys fs) +{ + int length = EXT2_INODE_SIZE(fs->super); + struct ext2_inode *inode = NULL; + ext2_inode_scan scan; + errcode_t retval; + ext2_ino_t ino; + int found_casefold = 0; + + retval = ext2fs_get_mem(length, &inode); + if (retval) + fatal_err(retval, "while allocating memory"); + + retval = ext2fs_open_inode_scan(fs, 0, &scan); + if (retval) + fatal_err(retval, "while opening inode scan"); + + do { + retval = ext2fs_get_next_inode_full(scan, &ino, inode, length); + if (retval) + fatal_err(retval, "while getting next inode"); + if (!ino) + break; + + if(inode->i_flags & EXT4_CASEFOLD_FL) { + found_casefold = 1; + break; + } + } while(1); + + ext2fs_free_mem(&inode); + ext2fs_close_inode_scan(scan); + return found_casefold; +} + static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag) { struct ext2_group_desc *gd; @@ -1149,6 +1214,56 @@ static int update_feature_set(ext2_filsys fs, char *features) } } + if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT4_FEATURE_COMPAT_ORPHAN_FILE)) { + ext2_ino_t ino; + + if (mount_flags & EXT2_MF_MOUNTED) { + fputs(_("The orphan_file feature may only be cleared " + "when the filesystem is unmounted.\n"), stderr); + return 1; + } + if (ext2fs_has_feature_orphan_present(sb) && f_flag < 2) { + fputs(_("The orphan_present feature is set. Please " + "run e2fsck before clearing orphan_file " + "feature.\n"), + stderr); + return 1; + } + err = ext2fs_read_bitmaps(fs); + if (err) { + com_err(program_name, err, "%s", + _("while loading bitmaps")); + return 1; + } + err = ext2fs_truncate_orphan_file(fs); + if (err) { + com_err(program_name, err, + _("\n\twhile trying to delete orphan file\n")); + return 1; + } + ino = sb->s_orphan_file_inum; + sb->s_orphan_file_inum = 0; + ext2fs_inode_alloc_stats2(fs, ino, -1, 0); + ext2fs_clear_feature_orphan_file(sb); + ext2fs_clear_feature_orphan_present(sb); + ext2fs_mark_super_dirty(fs); + } + + if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT4_FEATURE_COMPAT_ORPHAN_FILE)) { + if (!ext2fs_has_feature_journal(sb)) { + fputs(_("orphan_file feature can be set only for " + "filesystems with journal.\n"), stderr); + return 1; + } + /* + * If adding an orphan file, let the create orphan file + * code below handle setting the flag and creating it. + * We supply a default size if necessary. + */ + orphan_file_blocks = ext2fs_default_orphan_file_blocks(fs); + ext2fs_set_feature_orphan_file(sb); + } + if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT, EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) { if (ext2fs_has_feature_meta_bg(sb)) { @@ -1493,6 +1608,22 @@ mmp_error: enabling_casefold = 1; } + if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) { + if (mount_flags & EXT2_MF_MOUNTED) { + fputs(_("The casefold feature may only be disabled when " + "the filesystem is unmounted.\n"), stderr); + return 1; + } + if (has_casefold_inode(fs)) { + fputs(_("The casefold feature can't be cleared when " + "there are inodes with +F flag.\n"), stderr); + return 1; + } + fs->super->s_encoding = 0; + fs->super->s_encoding_flags = 0; + enabling_casefold = 0; + } + if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CSUM_SEED)) { if (!ext2fs_has_feature_metadata_csum(sb)) { @@ -2041,7 +2172,7 @@ static void parse_tune2fs_options(int argc, char **argv) open_flag = EXT2_FLAG_RW; break; case 'U': - new_UUID = optarg; + requested_uuid = optarg; U_flag = 1; open_flag = EXT2_FLAG_RW | EXT2_FLAG_JOURNAL_DEV_OK; @@ -2273,6 +2404,21 @@ static int parse_extended_opts(ext2_filsys fs, const char *opts) continue; } encoding_flags = arg; + } else if (!strcmp(token, "orphan_file_size")) { + if (!arg) { + r_usage++; + continue; + } + orphan_file_blocks = parse_num_blocks2(arg, + fs->super->s_log_block_size); + + if (orphan_file_blocks < 1) { + fprintf(stderr, + _("Invalid size of orphan file %s\n"), + arg); + r_usage++; + continue; + } } else r_usage++; } @@ -2933,6 +3079,80 @@ fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE]) return 0; } +/* + * Use FS_IOC_SETFSLABEL or FS_IOC_GETFSLABEL to set/get file system label + * Return: 0 on success + * 1 on error + * -1 when the old method should be used + */ +static int handle_fslabel(int setlabel) +{ +#ifdef __linux__ + errcode_t ret; + int mnt_flags, fd; + char label[FSLABEL_MAX]; + int maxlen = FSLABEL_MAX - 1; + char mntpt[PATH_MAX + 1]; + + ret = ext2fs_check_mount_point(device_name, &mnt_flags, + mntpt, sizeof(mntpt)); + if (ret) { + com_err(device_name, ret, _("while checking mount status")); + return 1; + } + if (!(mnt_flags & EXT2_MF_MOUNTED) || + (setlabel && (mnt_flags & EXT2_MF_READONLY))) + return -1; + + if (!mntpt[0]) { + fprintf(stderr,_("Unknown mount point for %s\n"), device_name); + return 1; + } + + fd = open(mntpt, O_RDONLY); + if (fd < 0) { + com_err(mntpt, errno, _("while opening mount point")); + return 1; + } + + /* Get fs label */ + if (!setlabel) { + if (ioctl(fd, FS_IOC_GETFSLABEL, &label)) { + close(fd); + if (errno == ENOTTY) + return -1; + com_err(mntpt, errno, _("while trying to get fs label")); + return 1; + } + close(fd); + printf("%.*s\n", EXT2_LEN_STR(label)); + return 0; + } + + /* If it's extN file system, truncate the label to appropriate size */ + if (mnt_flags & EXT2_MF_EXTFS) + maxlen = EXT2_LABEL_LEN; + if (strlen(new_label) > maxlen) { + fputs(_("Warning: label too long, truncating.\n"), + stderr); + new_label[maxlen] = '\0'; + } + + /* Set fs label */ + if (ioctl(fd, FS_IOC_SETFSLABEL, new_label)) { + close(fd); + if (errno == ENOTTY) + return -1; + com_err(mntpt, errno, _("while trying to set fs label")); + return 1; + } + close(fd); + return 0; +#else + return -1; +#endif +} + #ifndef BUILD_AS_LIB int main(int argc, char **argv) #else @@ -2945,6 +3165,9 @@ int tune2fs_main(int argc, char **argv) io_manager io_ptr, io_ptr_orig = NULL; int rc = 0; char default_undo_file[1] = { 0 }; + char mntpt[PATH_MAX + 1] = { 0 }; + int fd = -1; + struct fsuuid *fsuuid = NULL; #ifdef ENABLE_NLS setlocale(LC_MESSAGES, ""); @@ -2976,6 +3199,21 @@ int tune2fs_main(int argc, char **argv) #endif io_ptr = unix_io_manager; + /* + * Try the get/set fs label using ioctls before we even attempt + * to open the file system. + */ + if (L_flag || print_label) { + rc = handle_fslabel(L_flag); + if (rc != -1) { +#ifndef BUILD_AS_LIB + exit(rc); +#endif + return rc; + } + rc = 0; + } + retry_open: if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag) open_flag |= EXT2_FLAG_SKIP_MMP; @@ -3079,9 +3317,10 @@ retry_open: goto closefs; } - retval = ext2fs_check_if_mounted(device_name, &mount_flags); + retval = ext2fs_check_mount_point(device_name, &mount_flags, + mntpt, sizeof(mntpt)); if (retval) { - com_err("ext2fs_check_if_mount", retval, + com_err("ext2fs_check_mount_point", retval, _("while determining whether %s is mounted."), device_name); rc = 1; @@ -3261,6 +3500,24 @@ _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n" if (rc) goto closefs; } + if (orphan_file_blocks) { + errcode_t err; + + err = ext2fs_read_bitmaps(fs); + if (err) { + com_err(program_name, err, "%s", + _("while loading bitmaps")); + rc = 1; + goto closefs; + } + err = ext2fs_create_orphan_file(fs, orphan_file_blocks); + if (err) { + com_err(program_name, err, "%s", + _("while creating orphan file")); + rc = 1; + goto closefs; + } + } if (Q_flag) { if (mount_flags & EXT2_MF_MOUNTED) { @@ -3279,6 +3536,8 @@ _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n" dgrp_t i; char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8))); __u8 old_uuid[UUID_SIZE]; + uuid_t new_uuid; + errcode_t ret = -1; if (ext2fs_has_feature_stable_inodes(fs->super)) { fputs(_("Cannot change the UUID of this filesystem " @@ -3332,25 +3591,62 @@ _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n" 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); - } else if (strcasecmp(new_UUID, "time") == 0) { - uuid_generate_time(sb->s_uuid); - } else if (strcasecmp(new_UUID, "random") == 0) { - uuid_generate(sb->s_uuid); - } else if (uuid_parse(new_UUID, sb->s_uuid)) { +#ifdef __linux__ + if ((mount_flags & EXT2_MF_MOUNTED) && + !(mount_flags & EXT2_MF_READONLY) && mntpt[0]) { + fd = open(mntpt, O_RDONLY); + if (fd >= 0) + fsuuid = malloc(sizeof(*fsuuid) + UUID_SIZE); + if (fsuuid) { + fsuuid->fsu_len = UUID_SIZE; + fsuuid->fsu_flags = 0; + ret = ioctl(fd, EXT4_IOC_GETFSUUID, fsuuid); + if (ret || fsuuid->fsu_len != UUID_SIZE) { + free(fsuuid); + fsuuid = NULL; + } + } + } +#endif + + memcpy(old_uuid, fsuuid ? fsuuid->fsu_uuid : sb->s_uuid, + UUID_SIZE); + if ((strcasecmp(requested_uuid, "null") == 0) || + (strcasecmp(requested_uuid, "clear") == 0)) { + uuid_clear(new_uuid); + } else if (strcasecmp(requested_uuid, "time") == 0) { + uuid_generate_time(new_uuid); + } else if (strcasecmp(requested_uuid, "random") == 0) { + uuid_generate(new_uuid); + } else if (uuid_parse(requested_uuid, new_uuid)) { com_err(program_name, 0, "%s", _("Invalid UUID format\n")); rc = 1; goto closefs; } - ext2fs_init_csum_seed(fs); - if (set_csum) { - for (i = 0; i < fs->group_desc_count; i++) - ext2fs_group_desc_csum_set(fs, i); - fs->flags &= ~EXT2_FLAG_SUPER_ONLY; + + ret = -1; +#ifdef __linux__ + if (fsuuid) { + fsuuid->fsu_len = UUID_SIZE; + fsuuid->fsu_flags = 0; + memcpy(&fsuuid->fsu_uuid, new_uuid, UUID_SIZE); + ret = ioctl(fd, EXT4_IOC_SETFSUUID, fsuuid); + } +#endif + /* + * If we can't set the UUID via the ioctl, fall + * back to directly modifying the superblock + .*/ + if (ret) { + memcpy(sb->s_uuid, new_uuid, UUID_SIZE); + ext2fs_init_csum_seed(fs); + if (set_csum) { + for (i = 0; i < fs->group_desc_count; i++) + ext2fs_group_desc_csum_set(fs, i); + fs->flags &= ~EXT2_FLAG_SUPER_ONLY; + } + ext2fs_mark_super_dirty(fs); } /* If this is a journal dev, we need to copy UUID into jsb */ @@ -3374,8 +3670,6 @@ _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n" if ((rc = fs_update_journal_user(sb, old_uuid))) goto closefs; } - - ext2fs_mark_super_dirty(fs); } if (I_flag) { @@ -3450,6 +3744,10 @@ _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n" remove_error_table(&et_ext2_error_table); closefs: + if (fd >= 0) + close(fd); + if (fsuuid) + free(fsuuid); if (rc) { ext2fs_mmp_stop(fs); #ifndef BUILD_AS_LIB |