# Do not add any filesystems before this line
obj-$(CONFIG_FSCACHE) += fscache/
obj-$(CONFIG_REISERFS_FS) += reiserfs/
-obj-$(CONFIG_EXT2_FS) += ext2/
-# We place ext4 after ext2 so plain ext2 root fs's are mounted using ext2
-# unless explicitly requested by rootfstype
obj-$(CONFIG_EXT4_FS) += ext4/
+# We place ext4 before ext2 so that clean ext3 root fs's do NOT mount using the
+# ext2 driver, which doesn't know about journalling! Explicitly request ext2
+# by giving the rootfstype= parameter.
+obj-$(CONFIG_EXT2_FS) += ext2/
obj-$(CONFIG_JBD2) += jbd2/
obj-$(CONFIG_CRAMFS) += cramfs/
obj-$(CONFIG_SQUASHFS) += squashfs/
ioctl.o namei.o super.o symlink.o hash.o resize.o extents.o \
ext4_jbd2.o migrate.o mballoc.o block_validity.o move_extent.o \
mmp.o indirect.o extents_status.o xattr.o xattr_user.o \
- xattr_trusted.o inline.o readpage.o
+ xattr_trusted.o inline.o readpage.o sysfs.o
ext4-$(CONFIG_EXT4_FS_POSIX_ACL) += acl.o
ext4-$(CONFIG_EXT4_FS_SECURITY) += xattr_security.o
/* If checksum is bad mark all blocks used to prevent allocation
* essentially implementing a per-group read-only flag. */
if (!ext4_group_desc_csum_verify(sb, block_group, gdp)) {
+ ext4_error(sb, "Checksum bad for group %u", block_group);
grp = ext4_get_group_info(sb, block_group);
if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
percpu_counter_sub(&sbi->s_freeclusters_counter,
count);
}
set_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT, &grp->bb_state);
- return -EIO;
+ return -EFSBADCRC;
}
memset(bh->b_data, 0, sb->s_blocksize);
start = ext4_group_first_block_no(sb, block_group);
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG))
+ if (ext4_has_feature_flex_bg(sb))
flex_bg = 1;
/* Set bits for block and inode bitmaps, and inode table */
ext4_fsblk_t blk;
ext4_fsblk_t group_first_block;
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
+ if (ext4_has_feature_flex_bg(sb)) {
/* with FLEX_BG, the inode/block bitmaps and itable
* blocks may not be in the group at all
* so the bitmap validation will be skipped for those groups
return 0;
}
-static void ext4_validate_block_bitmap(struct super_block *sb,
- struct ext4_group_desc *desc,
- ext4_group_t block_group,
- struct buffer_head *bh)
+static int ext4_validate_block_bitmap(struct super_block *sb,
+ struct ext4_group_desc *desc,
+ ext4_group_t block_group,
+ struct buffer_head *bh)
{
ext4_fsblk_t blk;
struct ext4_group_info *grp = ext4_get_group_info(sb, block_group);
struct ext4_sb_info *sbi = EXT4_SB(sb);
- if (buffer_verified(bh) || EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
- return;
+ if (buffer_verified(bh))
+ return 0;
+ if (EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
+ return -EFSCORRUPTED;
ext4_lock_group(sb, block_group);
- blk = ext4_valid_block_bitmap(sb, desc, block_group, bh);
- if (unlikely(blk != 0)) {
+ if (unlikely(!ext4_block_bitmap_csum_verify(sb, block_group,
+ desc, bh))) {
ext4_unlock_group(sb, block_group);
- ext4_error(sb, "bg %u: block %llu: invalid block bitmap",
- block_group, blk);
+ ext4_error(sb, "bg %u: bad block bitmap checksum", block_group);
if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
percpu_counter_sub(&sbi->s_freeclusters_counter,
grp->bb_free);
set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
- return;
+ return -EFSBADCRC;
}
- if (unlikely(!ext4_block_bitmap_csum_verify(sb, block_group,
- desc, bh))) {
+ blk = ext4_valid_block_bitmap(sb, desc, block_group, bh);
+ if (unlikely(blk != 0)) {
ext4_unlock_group(sb, block_group);
- ext4_error(sb, "bg %u: bad block bitmap checksum", block_group);
+ ext4_error(sb, "bg %u: block %llu: invalid block bitmap",
+ block_group, blk);
if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
percpu_counter_sub(&sbi->s_freeclusters_counter,
grp->bb_free);
set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
- return;
+ return -EFSCORRUPTED;
}
set_buffer_verified(bh);
ext4_unlock_group(sb, block_group);
+ return 0;
}
/**
struct ext4_group_desc *desc;
struct buffer_head *bh;
ext4_fsblk_t bitmap_blk;
+ int err;
desc = ext4_get_group_desc(sb, block_group, NULL);
if (!desc)
- return NULL;
+ return ERR_PTR(-EFSCORRUPTED);
bitmap_blk = ext4_block_bitmap(sb, desc);
bh = sb_getblk(sb, bitmap_blk);
if (unlikely(!bh)) {
ext4_error(sb, "Cannot get buffer for block bitmap - "
"block_group = %u, block_bitmap = %llu",
block_group, bitmap_blk);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
if (bitmap_uptodate(bh))
}
ext4_lock_group(sb, block_group);
if (desc->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
- int err;
err = ext4_init_block_bitmap(sb, bh, block_group, desc);
set_bitmap_uptodate(bh);
ext4_unlock_group(sb, block_group);
unlock_buffer(bh);
if (err)
- ext4_error(sb, "Checksum bad for grp %u", block_group);
+ goto out;
goto verify;
}
ext4_unlock_group(sb, block_group);
submit_bh(READ | REQ_META | REQ_PRIO, bh);
return bh;
verify:
- ext4_validate_block_bitmap(sb, desc, block_group, bh);
- if (buffer_verified(bh))
- return bh;
+ err = ext4_validate_block_bitmap(sb, desc, block_group, bh);
+ if (err)
+ goto out;
+ return bh;
+out:
put_bh(bh);
- return NULL;
+ return ERR_PTR(err);
}
/* Returns 0 on success, 1 on error */
return 0;
desc = ext4_get_group_desc(sb, block_group, NULL);
if (!desc)
- return 1;
+ return -EFSCORRUPTED;
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
ext4_error(sb, "Cannot read block bitmap - "
"block_group = %u, block_bitmap = %llu",
block_group, (unsigned long long) bh->b_blocknr);
- return 1;
+ return -EIO;
}
clear_buffer_new(bh);
/* Panic or remount fs read-only if block bitmap is invalid */
- ext4_validate_block_bitmap(sb, desc, block_group, bh);
- /* ...but check for error just in case errors=continue. */
- return !buffer_verified(bh);
+ return ext4_validate_block_bitmap(sb, desc, block_group, bh);
}
struct buffer_head *
ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
{
struct buffer_head *bh;
+ int err;
bh = ext4_read_block_bitmap_nowait(sb, block_group);
- if (!bh)
- return NULL;
- if (ext4_wait_block_bitmap(sb, block_group, bh)) {
+ if (IS_ERR(bh))
+ return bh;
+ err = ext4_wait_block_bitmap(sb, block_group, bh);
+ if (err) {
put_bh(bh);
- return NULL;
+ return ERR_PTR(err);
}
return bh;
}
desc_count += ext4_free_group_clusters(sb, gdp);
brelse(bitmap_bh);
bitmap_bh = ext4_read_block_bitmap(sb, i);
- if (bitmap_bh == NULL)
+ if (IS_ERR(bitmap_bh)) {
+ bitmap_bh = NULL;
continue;
+ }
x = ext4_count_free(bitmap_bh->b_data,
EXT4_CLUSTERS_PER_GROUP(sb) / 8);
if (group == 0)
return 1;
- if (EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_SPARSE_SUPER2)) {
+ if (ext4_has_feature_sparse_super2(sb)) {
if (group == le32_to_cpu(es->s_backup_bgs[0]) ||
group == le32_to_cpu(es->s_backup_bgs[1]))
return 1;
return 0;
}
- if ((group <= 1) || !EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER))
+ if ((group <= 1) || !ext4_has_feature_sparse_super(sb))
return 1;
if (!(group & 1))
return 0;
if (!ext4_bg_has_super(sb, group))
return 0;
- if (EXT4_HAS_INCOMPAT_FEATURE(sb,EXT4_FEATURE_INCOMPAT_META_BG))
+ if (ext4_has_feature_meta_bg(sb))
return le32_to_cpu(EXT4_SB(sb)->s_es->s_first_meta_bg);
else
return EXT4_SB(sb)->s_gdb_count;
le32_to_cpu(EXT4_SB(sb)->s_es->s_first_meta_bg);
unsigned long metagroup = group / EXT4_DESC_PER_BLOCK(sb);
- if (!EXT4_HAS_INCOMPAT_FEATURE(sb,EXT4_FEATURE_INCOMPAT_META_BG) ||
- metagroup < first_meta_bg)
+ if (!ext4_has_feature_meta_bg(sb) || metagroup < first_meta_bg)
return ext4_bg_num_gdb_nometa(sb, group);
return ext4_bg_num_gdb_meta(sb,group);
/* Check for superblock and gdt backups in this group */
num = ext4_bg_has_super(sb, block_group);
- if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_META_BG) ||
+ if (!ext4_has_feature_meta_bg(sb) ||
block_group < le32_to_cpu(sbi->s_es->s_first_meta_bg) *
sbi->s_desc_per_block) {
if (num) {
es->s_last_error_block = cpu_to_le64(blk);
ext4_error_inode(inode, function, line, blk,
"invalid block");
- return -EIO;
+ return -EFSCORRUPTED;
}
}
return 0;
EXT4_ENCRYPT,
} ext4_direction_t;
-static int ext4_page_crypto(struct ext4_crypto_ctx *ctx,
- struct inode *inode,
+static int ext4_page_crypto(struct inode *inode,
ext4_direction_t rw,
pgoff_t index,
struct page *src_page,
else
res = crypto_ablkcipher_encrypt(req);
if (res == -EINPROGRESS || res == -EBUSY) {
- BUG_ON(req->base.data != &ecr);
wait_for_completion(&ecr.completion);
res = ecr.res;
}
if (IS_ERR(ciphertext_page))
goto errout;
ctx->w.control_page = plaintext_page;
- err = ext4_page_crypto(ctx, inode, EXT4_ENCRYPT, plaintext_page->index,
+ err = ext4_page_crypto(inode, EXT4_ENCRYPT, plaintext_page->index,
plaintext_page, ciphertext_page);
if (err) {
ciphertext_page = ERR_PTR(err);
*
* Return: Zero on success, non-zero otherwise.
*/
-int ext4_decrypt(struct ext4_crypto_ctx *ctx, struct page *page)
+int ext4_decrypt(struct page *page)
{
BUG_ON(!PageLocked(page));
- return ext4_page_crypto(ctx, page->mapping->host,
+ return ext4_page_crypto(page->mapping->host,
EXT4_DECRYPT, page->index, page, page);
}
-/*
- * Convenience function which takes care of allocating and
- * deallocating the encryption context
- */
-int ext4_decrypt_one(struct inode *inode, struct page *page)
-{
- int ret;
-
- struct ext4_crypto_ctx *ctx = ext4_get_crypto_ctx(inode);
-
- if (IS_ERR(ctx))
- return PTR_ERR(ctx);
- ret = ext4_decrypt(ctx, page);
- ext4_release_crypto_ctx(ctx);
- return ret;
-}
-
int ext4_encrypted_zeroout(struct inode *inode, struct ext4_extent *ex)
{
struct ext4_crypto_ctx *ctx;
ext4_lblk_t lblk = ex->ee_block;
ext4_fsblk_t pblk = ext4_ext_pblock(ex);
unsigned int len = ext4_ext_get_actual_len(ex);
- int err = 0;
+ int ret, err = 0;
+
+#if 0
+ ext4_msg(inode->i_sb, KERN_CRIT,
+ "ext4_encrypted_zeroout ino %lu lblk %u len %u",
+ (unsigned long) inode->i_ino, lblk, len);
+#endif
BUG_ON(inode->i_sb->s_blocksize != PAGE_CACHE_SIZE);
}
while (len--) {
- err = ext4_page_crypto(ctx, inode, EXT4_ENCRYPT, lblk,
+ err = ext4_page_crypto(inode, EXT4_ENCRYPT, lblk,
ZERO_PAGE(0), ciphertext_page);
if (err)
goto errout;
goto errout;
}
bio->bi_bdev = inode->i_sb->s_bdev;
- bio->bi_iter.bi_sector = pblk;
- err = bio_add_page(bio, ciphertext_page,
+ bio->bi_iter.bi_sector =
+ pblk << (inode->i_sb->s_blocksize_bits - 9);
+ ret = bio_add_page(bio, ciphertext_page,
inode->i_sb->s_blocksize, 0);
- if (err) {
+ if (ret != inode->i_sb->s_blocksize) {
+ /* should never happen! */
+ ext4_msg(inode->i_sb, KERN_ERR,
+ "bio_add_page failed: %d", ret);
+ WARN_ON(1);
bio_put(bio);
+ err = -EIO;
goto errout;
}
err = submit_bio_wait(WRITE, bio);
+ if ((err == 0) && bio->bi_error)
+ err = -EIO;
bio_put(bio);
if (err)
goto errout;
+ lblk++; pblk++;
}
err = 0;
errout:
ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, ciphertext_len, iv);
res = crypto_ablkcipher_encrypt(req);
if (res == -EINPROGRESS || res == -EBUSY) {
- BUG_ON(req->base.data != &ecr);
wait_for_completion(&ecr.completion);
res = ecr.res;
}
ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, iv);
res = crypto_ablkcipher_decrypt(req);
if (res == -EINPROGRESS || res == -EBUSY) {
- BUG_ON(req->base.data != &ecr);
wait_for_completion(&ecr.completion);
res = ecr.res;
}
EXT4_AES_256_XTS_KEY_SIZE, NULL);
res = crypto_ablkcipher_encrypt(req);
if (res == -EINPROGRESS || res == -EBUSY) {
- BUG_ON(req->base.data != &ecr);
wait_for_completion(&ecr.completion);
res = ecr.res;
}
goto out;
}
crypt_info->ci_keyring_key = keyring_key;
- BUG_ON(keyring_key->type != &key_type_logon);
+ if (keyring_key->type != &key_type_logon) {
+ printk_once(KERN_WARNING
+ "ext4: key type must be logon\n");
+ res = -ENOKEY;
+ goto out;
+ }
ukp = user_key_payload(keyring_key);
if (ukp->datalen != sizeof(struct ext4_encryption_key)) {
res = -EINVAL;
master_key = (struct ext4_encryption_key *)ukp->data;
BUILD_BUG_ON(EXT4_AES_128_ECB_KEY_SIZE !=
EXT4_KEY_DERIVATION_NONCE_SIZE);
- BUG_ON(master_key->size != EXT4_AES_256_XTS_KEY_SIZE);
+ if (master_key->size != EXT4_AES_256_XTS_KEY_SIZE) {
+ printk_once(KERN_WARNING
+ "ext4: key size incorrect: %d\n",
+ master_key->size);
+ res = -ENOKEY;
+ goto out;
+ }
res = ext4_derive_key_aes(ctx.nonce, master_key->raw,
raw_key);
if (res)
if ((parent == NULL) || (child == NULL)) {
pr_err("parent %p child %p\n", parent, child);
- BUG_ON(1);
+ WARN_ON(1); /* Should never happen */
+ return 0;
}
/* no restrictions if the parent directory is not encrypted */
if (!ext4_encrypted_inode(parent))
{
struct super_block *sb = inode->i_sb;
- if (EXT4_HAS_COMPAT_FEATURE(inode->i_sb,
- EXT4_FEATURE_COMPAT_DIR_INDEX) &&
+ if (ext4_has_feature_dir_index(inode->i_sb) &&
((ext4_test_inode_flag(inode, EXT4_INODE_INDEX)) ||
((inode->i_size >> sb->s_blocksize_bits) == 1) ||
ext4_has_inline_data(inode)))
while ((char *) de < top) {
if (ext4_check_dir_entry(dir, NULL, de, bh,
buf, buf_size, offset))
- return -EIO;
+ return -EFSCORRUPTED;
nlen = EXT4_DIR_REC_LEN(de->name_len);
rlen = ext4_rec_len_from_disk(de->rec_len, buf_size);
de = (struct ext4_dir_entry_2 *)((char *)de + rlen);
offset += rlen;
}
if ((char *) de > top)
- return -EIO;
+ return -EFSCORRUPTED;
return 0;
}
#define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
#define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
#define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
+#define EXT4_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
#define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
#define EXT4_FL_USER_VISIBLE 0x004BDFFF /* User visible flags */
EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */
EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */
EXT4_INODE_INLINE_DATA = 28, /* Data in inode. */
+ EXT4_INODE_PROJINHERIT = 29, /* Create with parents projid */
EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */
};
CHECK_FLAG_VALUE(EA_INODE);
CHECK_FLAG_VALUE(EOFBLOCKS);
CHECK_FLAG_VALUE(INLINE_DATA);
+ CHECK_FLAG_VALUE(PROJINHERIT);
CHECK_FLAG_VALUE(RESERVED);
}
__le32 i_crtime; /* File Creation time */
__le32 i_crtime_extra; /* extra FileCreationtime (nsec << 2 | epoch) */
__le32 i_version_hi; /* high 32 bits for 64-bit version */
+ __le32 i_projid; /* Project ID */
};
struct move_extent {
#define EXT4_MOUNT2_HURD_COMPAT 0x00000004 /* Support HURD-castrated
file systems */
+#define EXT4_MOUNT2_EXPLICIT_JOURNAL_CHECKSUM 0x00000008 /* User explicitly
+ specified journal checksum */
+
#define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \
~EXT4_MOUNT_##opt
#define set_opt(sb, opt) EXT4_SB(sb)->s_mount_opt |= \
__u8 s_encrypt_algos[4]; /* Encryption algorithms in use */
__u8 s_encrypt_pw_salt[16]; /* Salt used for string2key algorithm */
__le32 s_lpf_ino; /* Location of the lost+found inode */
- __le32 s_reserved[100]; /* Padding to the end of the block */
+ __le32 s_prj_quota_inum; /* inode for tracking project quota */
+ __le32 s_checksum_seed; /* crc32c(uuid) if csum_seed set */
+ __le32 s_reserved[98]; /* Padding to the end of the block */
__le32 s_checksum; /* crc32c(superblock) */
};
* Feature set definitions
*/
+/* Use the ext4_{has,set,clear}_feature_* helpers; these will be removed */
#define EXT4_HAS_COMPAT_FEATURE(sb,mask) \
((EXT4_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask)) != 0)
#define EXT4_HAS_RO_COMPAT_FEATURE(sb,mask) \
*/
#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
#define EXT4_FEATURE_RO_COMPAT_READONLY 0x1000
+#define EXT4_FEATURE_RO_COMPAT_PROJECT 0x2000
#define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001
#define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002
#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
#define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 /* EA in inode */
#define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 /* data in dirent */
-#define EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM 0x2000 /* use crc32c for bg */
+#define EXT4_FEATURE_INCOMPAT_CSUM_SEED 0x2000
#define EXT4_FEATURE_INCOMPAT_LARGEDIR 0x4000 /* >2GB or 3-lvl htree */
#define EXT4_FEATURE_INCOMPAT_INLINE_DATA 0x8000 /* data in inode */
#define EXT4_FEATURE_INCOMPAT_ENCRYPT 0x10000
+#define EXT4_FEATURE_COMPAT_FUNCS(name, flagname) \
+static inline bool ext4_has_feature_##name(struct super_block *sb) \
+{ \
+ return ((EXT4_SB(sb)->s_es->s_feature_compat & \
+ cpu_to_le32(EXT4_FEATURE_COMPAT_##flagname)) != 0); \
+} \
+static inline void ext4_set_feature_##name(struct super_block *sb) \
+{ \
+ EXT4_SB(sb)->s_es->s_feature_compat |= \
+ cpu_to_le32(EXT4_FEATURE_COMPAT_##flagname); \
+} \
+static inline void ext4_clear_feature_##name(struct super_block *sb) \
+{ \
+ EXT4_SB(sb)->s_es->s_feature_compat &= \
+ ~cpu_to_le32(EXT4_FEATURE_COMPAT_##flagname); \
+}
+
+#define EXT4_FEATURE_RO_COMPAT_FUNCS(name, flagname) \
+static inline bool ext4_has_feature_##name(struct super_block *sb) \
+{ \
+ return ((EXT4_SB(sb)->s_es->s_feature_ro_compat & \
+ cpu_to_le32(EXT4_FEATURE_RO_COMPAT_##flagname)) != 0); \
+} \
+static inline void ext4_set_feature_##name(struct super_block *sb) \
+{ \
+ EXT4_SB(sb)->s_es->s_feature_ro_compat |= \
+ cpu_to_le32(EXT4_FEATURE_RO_COMPAT_##flagname); \
+} \
+static inline void ext4_clear_feature_##name(struct super_block *sb) \
+{ \
+ EXT4_SB(sb)->s_es->s_feature_ro_compat &= \
+ ~cpu_to_le32(EXT4_FEATURE_RO_COMPAT_##flagname); \
+}
+
+#define EXT4_FEATURE_INCOMPAT_FUNCS(name, flagname) \
+static inline bool ext4_has_feature_##name(struct super_block *sb) \
+{ \
+ return ((EXT4_SB(sb)->s_es->s_feature_incompat & \
+ cpu_to_le32(EXT4_FEATURE_INCOMPAT_##flagname)) != 0); \
+} \
+static inline void ext4_set_feature_##name(struct super_block *sb) \
+{ \
+ EXT4_SB(sb)->s_es->s_feature_incompat |= \
+ cpu_to_le32(EXT4_FEATURE_INCOMPAT_##flagname); \
+} \
+static inline void ext4_clear_feature_##name(struct super_block *sb) \
+{ \
+ EXT4_SB(sb)->s_es->s_feature_incompat &= \
+ ~cpu_to_le32(EXT4_FEATURE_INCOMPAT_##flagname); \
+}
+
+EXT4_FEATURE_COMPAT_FUNCS(dir_prealloc, DIR_PREALLOC)
+EXT4_FEATURE_COMPAT_FUNCS(imagic_inodes, IMAGIC_INODES)
+EXT4_FEATURE_COMPAT_FUNCS(journal, HAS_JOURNAL)
+EXT4_FEATURE_COMPAT_FUNCS(xattr, EXT_ATTR)
+EXT4_FEATURE_COMPAT_FUNCS(resize_inode, RESIZE_INODE)
+EXT4_FEATURE_COMPAT_FUNCS(dir_index, DIR_INDEX)
+EXT4_FEATURE_COMPAT_FUNCS(sparse_super2, SPARSE_SUPER2)
+
+EXT4_FEATURE_RO_COMPAT_FUNCS(sparse_super, SPARSE_SUPER)
+EXT4_FEATURE_RO_COMPAT_FUNCS(large_file, LARGE_FILE)
+EXT4_FEATURE_RO_COMPAT_FUNCS(btree_dir, BTREE_DIR)
+EXT4_FEATURE_RO_COMPAT_FUNCS(huge_file, HUGE_FILE)
+EXT4_FEATURE_RO_COMPAT_FUNCS(gdt_csum, GDT_CSUM)
+EXT4_FEATURE_RO_COMPAT_FUNCS(dir_nlink, DIR_NLINK)
+EXT4_FEATURE_RO_COMPAT_FUNCS(extra_isize, EXTRA_ISIZE)
+EXT4_FEATURE_RO_COMPAT_FUNCS(quota, QUOTA)
+EXT4_FEATURE_RO_COMPAT_FUNCS(bigalloc, BIGALLOC)
+EXT4_FEATURE_RO_COMPAT_FUNCS(metadata_csum, METADATA_CSUM)
+EXT4_FEATURE_RO_COMPAT_FUNCS(readonly, READONLY)
+EXT4_FEATURE_RO_COMPAT_FUNCS(project, PROJECT)
+
+EXT4_FEATURE_INCOMPAT_FUNCS(compression, COMPRESSION)
+EXT4_FEATURE_INCOMPAT_FUNCS(filetype, FILETYPE)
+EXT4_FEATURE_INCOMPAT_FUNCS(journal_needs_recovery, RECOVER)
+EXT4_FEATURE_INCOMPAT_FUNCS(journal_dev, JOURNAL_DEV)
+EXT4_FEATURE_INCOMPAT_FUNCS(meta_bg, META_BG)
+EXT4_FEATURE_INCOMPAT_FUNCS(extents, EXTENTS)
+EXT4_FEATURE_INCOMPAT_FUNCS(64bit, 64BIT)
+EXT4_FEATURE_INCOMPAT_FUNCS(mmp, MMP)
+EXT4_FEATURE_INCOMPAT_FUNCS(flex_bg, FLEX_BG)
+EXT4_FEATURE_INCOMPAT_FUNCS(ea_inode, EA_INODE)
+EXT4_FEATURE_INCOMPAT_FUNCS(dirdata, DIRDATA)
+EXT4_FEATURE_INCOMPAT_FUNCS(csum_seed, CSUM_SEED)
+EXT4_FEATURE_INCOMPAT_FUNCS(largedir, LARGEDIR)
+EXT4_FEATURE_INCOMPAT_FUNCS(inline_data, INLINE_DATA)
+EXT4_FEATURE_INCOMPAT_FUNCS(encrypt, ENCRYPT)
+
#define EXT2_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR
#define EXT2_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \
EXT4_FEATURE_INCOMPAT_META_BG)
EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
EXT4_FEATURE_RO_COMPAT_BTREE_DIR)
-#define EXT4_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
+#define EXT4_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR
#define EXT4_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \
EXT4_FEATURE_INCOMPAT_RECOVER| \
EXT4_FEATURE_INCOMPAT_META_BG| \
EXT4_FEATURE_INCOMPAT_FLEX_BG| \
EXT4_FEATURE_INCOMPAT_MMP | \
EXT4_FEATURE_INCOMPAT_INLINE_DATA | \
- EXT4_FEATURE_INCOMPAT_ENCRYPT)
+ EXT4_FEATURE_INCOMPAT_ENCRYPT | \
+ EXT4_FEATURE_INCOMPAT_CSUM_SEED)
#define EXT4_FEATURE_RO_COMPAT_SUPP (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
EXT4_FEATURE_RO_COMPAT_GDT_CSUM| \
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
EXT4_FEATURE_RO_COMPAT_QUOTA)
+#define EXTN_FEATURE_FUNCS(ver) \
+static inline bool ext4_has_unknown_ext##ver##_compat_features(struct super_block *sb) \
+{ \
+ return ((EXT4_SB(sb)->s_es->s_feature_compat & \
+ cpu_to_le32(~EXT##ver##_FEATURE_COMPAT_SUPP)) != 0); \
+} \
+static inline bool ext4_has_unknown_ext##ver##_ro_compat_features(struct super_block *sb) \
+{ \
+ return ((EXT4_SB(sb)->s_es->s_feature_ro_compat & \
+ cpu_to_le32(~EXT##ver##_FEATURE_RO_COMPAT_SUPP)) != 0); \
+} \
+static inline bool ext4_has_unknown_ext##ver##_incompat_features(struct super_block *sb) \
+{ \
+ return ((EXT4_SB(sb)->s_es->s_feature_incompat & \
+ cpu_to_le32(~EXT##ver##_FEATURE_INCOMPAT_SUPP)) != 0); \
+}
+
+EXTN_FEATURE_FUNCS(2)
+EXTN_FEATURE_FUNCS(3)
+EXTN_FEATURE_FUNCS(4)
+
+static inline bool ext4_has_compat_features(struct super_block *sb)
+{
+ return (EXT4_SB(sb)->s_es->s_feature_compat != 0);
+}
+static inline bool ext4_has_ro_compat_features(struct super_block *sb)
+{
+ return (EXT4_SB(sb)->s_es->s_feature_ro_compat != 0);
+}
+static inline bool ext4_has_incompat_features(struct super_block *sb)
+{
+ return (EXT4_SB(sb)->s_es->s_feature_incompat != 0);
+}
+
/*
* Default values for user and/or group using reserved blocks
*/
* (c) Daniel Phillips, 2001
*/
-#define is_dx(dir) (EXT4_HAS_COMPAT_FEATURE(dir->i_sb, \
- EXT4_FEATURE_COMPAT_DIR_INDEX) && \
+#define is_dx(dir) (ext4_has_feature_dir_index((dir)->i_sb) && \
ext4_test_inode_flag((dir), EXT4_INODE_INDEX))
#define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX)
#define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
void ext4_restore_control_page(struct page *data_page);
struct page *ext4_encrypt(struct inode *inode,
struct page *plaintext_page);
-int ext4_decrypt(struct ext4_crypto_ctx *ctx, struct page *page);
-int ext4_decrypt_one(struct inode *inode, struct page *page);
+int ext4_decrypt(struct page *page);
int ext4_encrypted_zeroout(struct inode *inode, struct ext4_extent *ex);
#ifdef CONFIG_EXT4_FS_ENCRYPTION
void ext4_exit_crypto(void);
static inline int ext4_sb_has_crypto(struct super_block *sb)
{
- return EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_ENCRYPT);
+ return ext4_has_feature_encrypt(sb);
}
#else
static inline int ext4_init_crypto(void) { return 0; }
struct ext4_filename *fname);
static inline void ext4_update_dx_flag(struct inode *inode)
{
- if (!EXT4_HAS_COMPAT_FEATURE(inode->i_sb,
- EXT4_FEATURE_COMPAT_DIR_INDEX))
+ if (!ext4_has_feature_dir_index(inode->i_sb))
ext4_clear_inode_flag(inode, EXT4_INODE_INDEX);
}
static unsigned char ext4_filetype_table[] = {
static inline unsigned char get_dtype(struct super_block *sb, int filetype)
{
- if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FILETYPE) ||
- (filetype >= EXT4_FT_MAX))
+ if (!ext4_has_feature_filetype(sb) || filetype >= EXT4_FT_MAX)
return DT_UNKNOWN;
return ext4_filetype_table[filetype];
extern void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate);
/* mballoc.c */
+extern const struct file_operations ext4_seq_mb_groups_fops;
extern long ext4_mb_stats;
extern long ext4_mb_max_to_scan;
extern int ext4_mb_init(struct super_block *);
extern int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count);
/* super.c */
+extern int ext4_seq_options_show(struct seq_file *seq, void *offset);
extern int ext4_calculate_overhead(struct super_block *sb);
extern void ext4_superblock_csum_set(struct super_block *sb);
extern void *ext4_kvmalloc(size_t size, gfp_t flags);
static inline int ext4_has_group_desc_csum(struct super_block *sb)
{
- return EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
- (EXT4_SB(sb)->s_chksum_driver != NULL);
+ return ext4_has_feature_gdt_csum(sb) ||
+ EXT4_SB(sb)->s_chksum_driver != NULL;
}
static inline int ext4_has_metadata_csum(struct super_block *sb)
{
- WARN_ON_ONCE(EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) &&
+ WARN_ON_ONCE(ext4_has_feature_metadata_csum(sb) &&
!EXT4_SB(sb)->s_chksum_driver);
return (EXT4_SB(sb)->s_chksum_driver != NULL);
static inline void ext4_set_de_type(struct super_block *sb,
struct ext4_dir_entry_2 *de,
umode_t mode) {
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FILETYPE))
+ if (ext4_has_feature_filetype(sb))
de->file_type = ext4_type_by_mode[(mode & S_IFMT)>>S_SHIFT];
}
extern const struct inode_operations ext4_symlink_inode_operations;
extern const struct inode_operations ext4_fast_symlink_inode_operations;
+/* sysfs.c */
+extern int ext4_register_sysfs(struct super_block *sb);
+extern void ext4_unregister_sysfs(struct super_block *sb);
+extern int __init ext4_init_sysfs(void);
+extern void ext4_exit_sysfs(void);
+
/* block_validity */
extern void ext4_release_system_zone(struct super_block *sb);
extern int ext4_setup_system_zone(struct super_block *sb);
#endif /* __KERNEL__ */
+#define EFSBADCRC EBADMSG /* Bad CRC detected */
+#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
+
#endif /* _EXT4_H */
return 0;
}
+ err = handle->h_err;
if (!handle->h_transaction) {
- err = jbd2_journal_stop(handle);
- return handle->h_err ? handle->h_err : err;
+ rc = jbd2_journal_stop(handle);
+ return err ? err : rc;
}
sb = handle->h_transaction->t_journal->j_private;
- err = handle->h_err;
rc = jbd2_journal_stop(handle);
if (!err)
*/
#define EXT4_SINGLEDATA_TRANS_BLOCKS(sb) \
- (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS) \
- ? 20U : 8U)
+ (ext4_has_feature_extents(sb) ? 20U : 8U)
/* Extended attribute operations touch at most two data buffers,
* two bitmap buffers, and two group summaries, in addition to the inode
/* Amount of blocks needed for quota update - we know that the structure was
* allocated so we need to update only data block */
#define EXT4_QUOTA_TRANS_BLOCKS(sb) ((test_opt(sb, QUOTA) ||\
- EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) ?\
- 1 : 0)
+ ext4_has_feature_quota(sb)) ? 1 : 0)
/* Amount of blocks needed for quota insert/delete - we do some block writes
* but inode, sb and group updates are done only once */
#define EXT4_QUOTA_INIT_BLOCKS(sb) ((test_opt(sb, QUOTA) ||\
- EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) ?\
+ ext4_has_feature_quota(sb)) ?\
(DQUOT_INIT_ALLOC*(EXT4_SINGLEDATA_TRANS_BLOCKS(sb)-3)\
+3+DQUOT_INIT_REWRITE) : 0)
#define EXT4_QUOTA_DEL_BLOCKS(sb) ((test_opt(sb, QUOTA) ||\
- EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) ?\
+ ext4_has_feature_quota(sb)) ?\
(DQUOT_DEL_ALLOC*(EXT4_SINGLEDATA_TRANS_BLOCKS(sb)-3)\
+3+DQUOT_DEL_REWRITE) : 0)
#else
int depth, ext4_fsblk_t pblk)
{
const char *error_msg;
- int max = 0;
+ int max = 0, err = -EFSCORRUPTED;
if (unlikely(eh->eh_magic != EXT4_EXT_MAGIC)) {
error_msg = "invalid magic";
if (ext_depth(inode) != depth &&
!ext4_extent_block_csum_verify(inode, eh)) {
error_msg = "extent tree corrupted";
+ err = -EFSBADCRC;
goto corrupted;
}
return 0;
le16_to_cpu(eh->eh_magic),
le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max),
max, le16_to_cpu(eh->eh_depth), depth);
- return -EIO;
+ return err;
}
#define ext4_ext_check(inode, eh, depth, pblk) \
put_bh(bh);
EXT4_ERROR_INODE(inode,
"ppos %d > depth %d", ppos, depth);
- ret = -EIO;
+ ret = -EFSCORRUPTED;
goto err;
}
path[ppos].p_bh = bh;
EXT4_ERROR_INODE(inode,
"logical %d == ei_block %d!",
logical, le32_to_cpu(curp->p_idx->ei_block));
- return -EIO;
+ return -EFSCORRUPTED;
}
if (unlikely(le16_to_cpu(curp->p_hdr->eh_entries)
"eh_entries %d >= eh_max %d!",
le16_to_cpu(curp->p_hdr->eh_entries),
le16_to_cpu(curp->p_hdr->eh_max));
- return -EIO;
+ return -EFSCORRUPTED;
}
if (logical > le32_to_cpu(curp->p_idx->ei_block)) {
if (unlikely(ix > EXT_MAX_INDEX(curp->p_hdr))) {
EXT4_ERROR_INODE(inode, "ix > EXT_MAX_INDEX!");
- return -EIO;
+ return -EFSCORRUPTED;
}
ix->ei_block = cpu_to_le32(logical);
if (unlikely(ix > EXT_LAST_INDEX(curp->p_hdr))) {
EXT4_ERROR_INODE(inode, "ix > EXT_LAST_INDEX!");
- return -EIO;
+ return -EFSCORRUPTED;
}
err = ext4_ext_dirty(handle, inode, curp);
* border from split point */
if (unlikely(path[depth].p_ext > EXT_MAX_EXTENT(path[depth].p_hdr))) {
EXT4_ERROR_INODE(inode, "p_ext > EXT_MAX_EXTENT!");
- return -EIO;
+ return -EFSCORRUPTED;
}
if (path[depth].p_ext != EXT_MAX_EXTENT(path[depth].p_hdr)) {
border = path[depth].p_ext[1].ee_block;
newblock = ablocks[--a];
if (unlikely(newblock == 0)) {
EXT4_ERROR_INODE(inode, "newblock == 0!");
- err = -EIO;
+ err = -EFSCORRUPTED;
goto cleanup;
}
bh = sb_getblk_gfp(inode->i_sb, newblock, __GFP_MOVABLE | GFP_NOFS);
EXT4_ERROR_INODE(inode, "eh_entries %d != eh_max %d!",
path[depth].p_hdr->eh_entries,
path[depth].p_hdr->eh_max);
- err = -EIO;
+ err = -EFSCORRUPTED;
goto cleanup;
}
/* start copy from next extent */
k = depth - at - 1;
if (unlikely(k < 0)) {
EXT4_ERROR_INODE(inode, "k %d < 0!", k);
- err = -EIO;
+ err = -EFSCORRUPTED;
goto cleanup;
}
if (k)
EXT4_ERROR_INODE(inode,
"EXT_MAX_INDEX != EXT_LAST_INDEX ee_block %d!",
le32_to_cpu(path[i].p_ext->ee_block));
- err = -EIO;
+ err = -EFSCORRUPTED;
goto cleanup;
}
/* start copy indexes */
if (unlikely(path == NULL)) {
EXT4_ERROR_INODE(inode, "path == NULL *logical %d!", *logical);
- return -EIO;
+ return -EFSCORRUPTED;
}
depth = path->p_depth;
*phys = 0;
EXT4_ERROR_INODE(inode,
"EXT_FIRST_EXTENT != ex *logical %d ee_block %d!",
*logical, le32_to_cpu(ex->ee_block));
- return -EIO;
+ return -EFSCORRUPTED;
}
while (--depth >= 0) {
ix = path[depth].p_idx;
EXT_FIRST_INDEX(path[depth].p_hdr) != NULL ?
le32_to_cpu(EXT_FIRST_INDEX(path[depth].p_hdr)->ei_block) : 0,
depth);
- return -EIO;
+ return -EFSCORRUPTED;
}
}
return 0;
EXT4_ERROR_INODE(inode,
"logical %d < ee_block %d + ee_len %d!",
*logical, le32_to_cpu(ex->ee_block), ee_len);
- return -EIO;
+ return -EFSCORRUPTED;
}
*logical = le32_to_cpu(ex->ee_block) + ee_len - 1;
if (unlikely(path == NULL)) {
EXT4_ERROR_INODE(inode, "path == NULL *logical %d!", *logical);
- return -EIO;
+ return -EFSCORRUPTED;
}
depth = path->p_depth;
*phys = 0;
EXT4_ERROR_INODE(inode,
"first_extent(path[%d].p_hdr) != ex",
depth);
- return -EIO;
+ return -EFSCORRUPTED;
}
while (--depth >= 0) {
ix = path[depth].p_idx;
EXT4_ERROR_INODE(inode,
"ix != EXT_FIRST_INDEX *logical %d!",
*logical);
- return -EIO;
+ return -EFSCORRUPTED;
}
}
goto found_extent;
EXT4_ERROR_INODE(inode,
"logical %d < ee_block %d + ee_len %d!",
*logical, le32_to_cpu(ex->ee_block), ee_len);
- return -EIO;
+ return -EFSCORRUPTED;
}
if (ex != EXT_LAST_EXTENT(path[depth].p_hdr)) {
if (unlikely(ex == NULL || eh == NULL)) {
EXT4_ERROR_INODE(inode,
"ex %p == NULL or eh %p == NULL", ex, eh);
- return -EIO;
+ return -EFSCORRUPTED;
}
if (depth == 0) {
mb_flags |= EXT4_MB_DELALLOC_RESERVED;
if (unlikely(ext4_ext_get_actual_len(newext) == 0)) {
EXT4_ERROR_INODE(inode, "ext4_ext_get_actual_len(newext) == 0");
- return -EIO;
+ return -EFSCORRUPTED;
}
depth = ext_depth(inode);
ex = path[depth].p_ext;
eh = path[depth].p_hdr;
if (unlikely(path[depth].p_hdr == NULL)) {
EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
- return -EIO;
+ return -EFSCORRUPTED;
}
/* try to insert block into found extent and return */
if (unlikely(path[depth].p_hdr == NULL)) {
up_read(&EXT4_I(inode)->i_data_sem);
EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
- err = -EIO;
+ err = -EFSCORRUPTED;
break;
}
ex = path[depth].p_ext;
if (unlikely(es.es_len == 0)) {
EXT4_ERROR_INODE(inode, "es.es_len == 0");
- err = -EIO;
+ err = -EFSCORRUPTED;
break;
}
"next extent == %u, next "
"delalloc extent = %u",
next, next_del);
- err = -EIO;
+ err = -EFSCORRUPTED;
break;
}
}
leaf = ext4_idx_pblock(path->p_idx);
if (unlikely(path->p_hdr->eh_entries == 0)) {
EXT4_ERROR_INODE(inode, "path->p_hdr->eh_entries == 0");
- return -EIO;
+ return -EFSCORRUPTED;
}
err = ext4_ext_get_access(handle, inode, path);
if (err)
eh = path[depth].p_hdr;
if (unlikely(path[depth].p_hdr == NULL)) {
EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
- return -EIO;
+ return -EFSCORRUPTED;
}
/* find where to start removing */
ex = path[depth].p_ext;
"on extent %u:%u",
start, end, ex_ee_block,
ex_ee_block + ex_ee_len - 1);
- err = -EIO;
+ err = -EFSCORRUPTED;
goto out;
} else if (a != ex_ee_block) {
/* remove tail of the extent */
EXT4_ERROR_INODE(inode,
"path[%d].p_hdr == NULL",
depth);
- err = -EIO;
+ err = -EFSCORRUPTED;
}
goto out;
}
i = 0;
if (ext4_ext_check(inode, path[0].p_hdr, depth, 0)) {
- err = -EIO;
+ err = -EFSCORRUPTED;
goto out;
}
}
* Should be a no-op if we did IO above. */
cond_resched();
if (WARN_ON(i + 1 > depth)) {
- err = -EIO;
+ err = -EFSCORRUPTED;
break;
}
path[i + 1].p_bh = bh;
* possible initialization would be here
*/
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
+ if (ext4_has_feature_extents(sb)) {
#if defined(AGGRESSIVE_TEST) || defined(CHECK_BINSEARCH) || defined(EXTENTS_STATS)
printk(KERN_INFO "EXT4-fs: file extents enabled"
#ifdef AGGRESSIVE_TEST
*/
void ext4_ext_release(struct super_block *sb)
{
- if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS))
+ if (!ext4_has_feature_extents(sb))
return;
#ifdef EXTENTS_STATS
if (!ex) {
EXT4_ERROR_INODE(inode, "unexpected hole at %lu",
(unsigned long) map->m_lblk);
- return -EIO;
+ return -EFSCORRUPTED;
}
unwritten = ext4_ext_is_unwritten(ex);
split_flag1 = 0;
max_zeroout = sbi->s_extent_max_zeroout_kb >>
(inode->i_sb->s_blocksize_bits - 10);
+ if (ext4_encrypted_inode(inode))
+ max_zeroout = 0;
+
/* If extent is less than s_max_zeroout_kb, zeroout directly */
if (max_zeroout && (ee_len <= max_zeroout)) {
err = ext4_ext_zeroout(inode, ex);
if (!ex) {
EXT4_ERROR_INODE(inode, "unexpected hole at %lu",
(unsigned long) map->m_lblk);
- return -EIO;
+ return -EFSCORRUPTED;
}
}
"lblock: %lu, depth: %d pblock %lld",
(unsigned long) map->m_lblk, depth,
path[depth].p_block);
- err = -EIO;
+ err = -EFSCORRUPTED;
goto out2;
}
if (depth == path->p_depth) {
ex_start = path[depth].p_ext;
if (!ex_start)
- return -EIO;
+ return -EFSCORRUPTED;
ex_last = EXT_LAST_EXTENT(path[depth].p_hdr);
if (!extent) {
EXT4_ERROR_INODE(inode, "unexpected hole at %lu",
(unsigned long) *iterator);
- return -EIO;
+ return -EFSCORRUPTED;
}
if (SHIFT == SHIFT_LEFT && *iterator >
le32_to_cpu(extent->ee_block)) {
return nr_shrunk;
}
-static void *ext4_es_seq_shrinker_info_start(struct seq_file *seq, loff_t *pos)
+int ext4_seq_es_shrinker_info_show(struct seq_file *seq, void *v)
{
- return *pos ? NULL : SEQ_START_TOKEN;
-}
-
-static void *
-ext4_es_seq_shrinker_info_next(struct seq_file *seq, void *v, loff_t *pos)
-{
- return NULL;
-}
-
-static int ext4_es_seq_shrinker_info_show(struct seq_file *seq, void *v)
-{
- struct ext4_sb_info *sbi = seq->private;
+ struct ext4_sb_info *sbi = EXT4_SB((struct super_block *) seq->private);
struct ext4_es_stats *es_stats = &sbi->s_es_stats;
struct ext4_inode_info *ei, *max = NULL;
unsigned int inode_cnt = 0;
return 0;
}
-static void ext4_es_seq_shrinker_info_stop(struct seq_file *seq, void *v)
-{
-}
-
-static const struct seq_operations ext4_es_seq_shrinker_info_ops = {
- .start = ext4_es_seq_shrinker_info_start,
- .next = ext4_es_seq_shrinker_info_next,
- .stop = ext4_es_seq_shrinker_info_stop,
- .show = ext4_es_seq_shrinker_info_show,
-};
-
-static int
-ext4_es_seq_shrinker_info_open(struct inode *inode, struct file *file)
-{
- int ret;
-
- ret = seq_open(file, &ext4_es_seq_shrinker_info_ops);
- if (!ret) {
- struct seq_file *m = file->private_data;
- m->private = PDE_DATA(inode);
- }
-
- return ret;
-}
-
-static int
-ext4_es_seq_shrinker_info_release(struct inode *inode, struct file *file)
-{
- return seq_release(inode, file);
-}
-
-static const struct file_operations ext4_es_seq_shrinker_info_fops = {
- .owner = THIS_MODULE,
- .open = ext4_es_seq_shrinker_info_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = ext4_es_seq_shrinker_info_release,
-};
-
int ext4_es_register_shrinker(struct ext4_sb_info *sbi)
{
int err;
if (err)
goto err2;
- if (sbi->s_proc)
- proc_create_data("es_shrinker_info", S_IRUGO, sbi->s_proc,
- &ext4_es_seq_shrinker_info_fops, sbi);
-
return 0;
err2:
void ext4_es_unregister_shrinker(struct ext4_sb_info *sbi)
{
- if (sbi->s_proc)
- remove_proc_entry("es_shrinker_info", sbi->s_proc);
percpu_counter_destroy(&sbi->s_es_stats.es_stats_all_cnt);
percpu_counter_destroy(&sbi->s_es_stats.es_stats_shk_cnt);
unregister_shrinker(&sbi->s_es_shrinker);
extern int ext4_es_register_shrinker(struct ext4_sb_info *sbi);
extern void ext4_es_unregister_shrinker(struct ext4_sb_info *sbi);
+extern int ext4_seq_es_shrinker_info_show(struct seq_file *seq, void *v);
+
#endif /* _EXT4_EXTENTS_STATUS_H */
}
/* Initializes an uninitialized inode bitmap */
-static unsigned ext4_init_inode_bitmap(struct super_block *sb,
+static int ext4_init_inode_bitmap(struct super_block *sb,
struct buffer_head *bh,
ext4_group_t block_group,
struct ext4_group_desc *gdp)
count);
}
set_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT, &grp->bb_state);
- return 0;
+ return -EFSBADCRC;
}
memset(bh->b_data, 0, (EXT4_INODES_PER_GROUP(sb) + 7) / 8);
EXT4_INODES_PER_GROUP(sb) / 8);
ext4_group_desc_csum_set(sb, block_group, gdp);
- return EXT4_INODES_PER_GROUP(sb);
+ return 0;
}
void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate)
put_bh(bh);
}
+static int ext4_validate_inode_bitmap(struct super_block *sb,
+ struct ext4_group_desc *desc,
+ ext4_group_t block_group,
+ struct buffer_head *bh)
+{
+ ext4_fsblk_t blk;
+ struct ext4_group_info *grp = ext4_get_group_info(sb, block_group);
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+
+ if (buffer_verified(bh))
+ return 0;
+ if (EXT4_MB_GRP_IBITMAP_CORRUPT(grp))
+ return -EFSCORRUPTED;
+
+ ext4_lock_group(sb, block_group);
+ blk = ext4_inode_bitmap(sb, desc);
+ if (!ext4_inode_bitmap_csum_verify(sb, block_group, desc, bh,
+ EXT4_INODES_PER_GROUP(sb) / 8)) {
+ ext4_unlock_group(sb, block_group);
+ ext4_error(sb, "Corrupt inode bitmap - block_group = %u, "
+ "inode_bitmap = %llu", block_group, blk);
+ grp = ext4_get_group_info(sb, block_group);
+ if (!EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) {
+ int count;
+ count = ext4_free_inodes_count(sb, desc);
+ percpu_counter_sub(&sbi->s_freeinodes_counter,
+ count);
+ }
+ set_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT, &grp->bb_state);
+ return -EFSBADCRC;
+ }
+ set_buffer_verified(bh);
+ ext4_unlock_group(sb, block_group);
+ return 0;
+}
+
/*
* Read the inode allocation bitmap for a given block_group, reading
* into the specified slot in the superblock's bitmap cache.
struct ext4_group_desc *desc;
struct buffer_head *bh = NULL;
ext4_fsblk_t bitmap_blk;
- struct ext4_group_info *grp;
- struct ext4_sb_info *sbi = EXT4_SB(sb);
+ int err;
desc = ext4_get_group_desc(sb, block_group, NULL);
if (!desc)
- return NULL;
+ return ERR_PTR(-EFSCORRUPTED);
bitmap_blk = ext4_inode_bitmap(sb, desc);
bh = sb_getblk(sb, bitmap_blk);
ext4_error(sb, "Cannot read inode bitmap - "
"block_group = %u, inode_bitmap = %llu",
block_group, bitmap_blk);
- return NULL;
+ return ERR_PTR(-EIO);
}
if (bitmap_uptodate(bh))
goto verify;
ext4_lock_group(sb, block_group);
if (desc->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) {
- ext4_init_inode_bitmap(sb, bh, block_group, desc);
+ err = ext4_init_inode_bitmap(sb, bh, block_group, desc);
set_bitmap_uptodate(bh);
set_buffer_uptodate(bh);
set_buffer_verified(bh);
ext4_unlock_group(sb, block_group);
unlock_buffer(bh);
+ if (err)
+ goto out;
return bh;
}
ext4_unlock_group(sb, block_group);
ext4_error(sb, "Cannot read inode bitmap - "
"block_group = %u, inode_bitmap = %llu",
block_group, bitmap_blk);
- return NULL;
+ return ERR_PTR(-EIO);
}
verify:
- ext4_lock_group(sb, block_group);
- if (!buffer_verified(bh) &&
- !ext4_inode_bitmap_csum_verify(sb, block_group, desc, bh,
- EXT4_INODES_PER_GROUP(sb) / 8)) {
- ext4_unlock_group(sb, block_group);
- put_bh(bh);
- ext4_error(sb, "Corrupt inode bitmap - block_group = %u, "
- "inode_bitmap = %llu", block_group, bitmap_blk);
- grp = ext4_get_group_info(sb, block_group);
- if (!EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) {
- int count;
- count = ext4_free_inodes_count(sb, desc);
- percpu_counter_sub(&sbi->s_freeinodes_counter,
- count);
- }
- set_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT, &grp->bb_state);
- return NULL;
- }
- ext4_unlock_group(sb, block_group);
- set_buffer_verified(bh);
+ err = ext4_validate_inode_bitmap(sb, desc, block_group, bh);
+ if (err)
+ goto out;
return bh;
+out:
+ put_bh(bh);
+ return ERR_PTR(err);
}
/*
bitmap_bh = ext4_read_inode_bitmap(sb, block_group);
/* Don't bother if the inode bitmap is corrupt. */
grp = ext4_get_group_info(sb, block_group);
- if (unlikely(EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) || !bitmap_bh)
+ if (IS_ERR(bitmap_bh)) {
+ fatal = PTR_ERR(bitmap_bh);
+ bitmap_bh = NULL;
+ goto error_return;
+ }
+ if (unlikely(EXT4_MB_GRP_IBITMAP_CORRUPT(grp))) {
+ fatal = -EFSCORRUPTED;
goto error_return;
+ }
BUFFER_TRACE(bitmap_bh, "get_write_access");
fatal = ext4_journal_get_write_access(handle, bitmap_bh);
brelse(inode_bitmap_bh);
inode_bitmap_bh = ext4_read_inode_bitmap(sb, group);
/* Skip groups with suspicious inode tables */
- if (EXT4_MB_GRP_IBITMAP_CORRUPT(grp) || !inode_bitmap_bh) {
+ if (EXT4_MB_GRP_IBITMAP_CORRUPT(grp) ||
+ IS_ERR(inode_bitmap_bh)) {
+ inode_bitmap_bh = NULL;
if (++group == ngroups)
group = 0;
continue;
struct buffer_head *block_bitmap_bh;
block_bitmap_bh = ext4_read_block_bitmap(sb, group);
- if (!block_bitmap_bh) {
- err = -EIO;
+ if (IS_ERR(block_bitmap_bh)) {
+ err = PTR_ERR(block_bitmap_bh);
goto out;
}
BUFFER_TRACE(block_bitmap_bh, "get block bitmap access");
ei->i_extra_isize = EXT4_SB(sb)->s_want_extra_isize;
ei->i_inline_off = 0;
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_INLINE_DATA))
+ if (ext4_has_feature_inline_data(sb))
ext4_set_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA);
ret = inode;
err = dquot_alloc_inode(inode);
if (err)
goto fail_free_drop;
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
+ if (ext4_has_feature_extents(sb)) {
/* set extent flag only for directory, file and normal symlink*/
if (S_ISDIR(mode) || S_ISREG(mode) || S_ISLNK(mode)) {
ext4_set_inode_flag(inode, EXT4_INODE_EXTENTS);
/* Error cases - e2fsck has already cleaned up for us */
if (ino > max_ino) {
ext4_warning(sb, "bad orphan ino %lu! e2fsck was run?", ino);
+ err = -EFSCORRUPTED;
goto error;
}
block_group = (ino - 1) / EXT4_INODES_PER_GROUP(sb);
bit = (ino - 1) % EXT4_INODES_PER_GROUP(sb);
bitmap_bh = ext4_read_inode_bitmap(sb, block_group);
- if (!bitmap_bh) {
- ext4_warning(sb, "inode bitmap error for orphan %lu", ino);
+ if (IS_ERR(bitmap_bh)) {
+ err = PTR_ERR(bitmap_bh);
+ ext4_warning(sb, "inode bitmap error %ld for orphan %lu",
+ ino, err);
goto error;
}
desc_count += ext4_free_inodes_count(sb, gdp);
brelse(bitmap_bh);
bitmap_bh = ext4_read_inode_bitmap(sb, i);
- if (!bitmap_bh)
+ if (IS_ERR(bitmap_bh)) {
+ bitmap_bh = NULL;
continue;
+ }
x = ext4_count_free(bitmap_bh->b_data,
EXT4_INODES_PER_GROUP(sb) / 8);
/*
* Okay, we need to do block allocation.
*/
- if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
- EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
+ if (ext4_has_feature_bigalloc(inode->i_sb)) {
EXT4_ERROR_INODE(inode, "Can't allocate blocks for "
"non-extent mapped inodes with bigalloc");
- return -EUCLEAN;
+ return -EFSCORRUPTED;
}
/* Set up for the direct block allocation */
memset((void *)ext4_raw_inode(&is.iloc)->i_block,
0, EXT4_MIN_INLINE_DATA_SIZE);
- if (EXT4_HAS_INCOMPAT_FEATURE(inode->i_sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS)) {
+ if (ext4_has_feature_extents(inode->i_sb)) {
if (S_ISDIR(inode->i_mode) ||
S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) {
ext4_set_inode_flag(inode, EXT4_INODE_EXTENTS);
"lblock %lu mapped to illegal pblock "
"(length %d)", (unsigned long) map->m_lblk,
map->m_len);
- return -EIO;
+ return -EFSCORRUPTED;
}
return 0;
}
/* We can handle the block number less than EXT_MAX_BLOCKS */
if (unlikely(map->m_lblk >= EXT_MAX_BLOCKS))
- return -EIO;
+ return -EFSCORRUPTED;
/* Lookup extent status tree firstly */
if (ext4_es_lookup_extent(inode, map->m_lblk, &es)) {
if (unlikely(err))
page_zero_new_buffers(page, from, to);
else if (decrypt)
- err = ext4_decrypt_one(inode, page);
+ err = ext4_decrypt(page);
return err;
}
#endif
return ret ? ret : copied;
}
+/*
+ * This is a private version of page_zero_new_buffers() which doesn't
+ * set the buffer to be dirty, since in data=journalled mode we need
+ * to call ext4_handle_dirty_metadata() instead.
+ */
+static void zero_new_buffers(struct page *page, unsigned from, unsigned to)
+{
+ unsigned int block_start = 0, block_end;
+ struct buffer_head *head, *bh;
+
+ bh = head = page_buffers(page);
+ do {
+ block_end = block_start + bh->b_size;
+ if (buffer_new(bh)) {
+ if (block_end > from && block_start < to) {
+ if (!PageUptodate(page)) {
+ unsigned start, size;
+
+ start = max(from, block_start);
+ size = min(to, block_end) - start;
+
+ zero_user(page, start, size);
+ set_buffer_uptodate(bh);
+ }
+ clear_buffer_new(bh);
+ }
+ }
+ block_start = block_end;
+ bh = bh->b_this_page;
+ } while (bh != head);
+}
+
static int ext4_journalled_write_end(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
if (copied < len) {
if (!PageUptodate(page))
copied = 0;
- page_zero_new_buffers(page, from+copied, to);
+ zero_new_buffers(page, from+copied, to);
}
ret = ext4_walk_page_buffers(handle, page_buffers(page), from,
* the page. But we may reach here when we do a journal commit via
* journal_submit_inode_data_buffers() and in that case we must write
* allocated buffers to achieve data=ordered mode guarantees.
+ *
+ * Also, if there is only one buffer per page (the fs block
+ * size == the page size), if one buffer needs block
+ * allocation or needs to modify the extent tree to clear the
+ * unwritten flag, we know that the page can't be written at
+ * all, so we might as well refuse the write immediately.
+ * Unfortunately if the block size != page size, we can't as
+ * easily detect this case using ext4_walk_page_buffers(), but
+ * for the extremely common case, this is an optimization that
+ * skips a useless round trip through ext4_bio_write_page().
*/
if (ext4_walk_page_buffers(NULL, page_bufs, 0, len, NULL,
ext4_bh_delay_or_unwritten)) {
redirty_page_for_writepage(wbc, page);
- if (current->flags & PF_MEMALLOC) {
+ if ((current->flags & PF_MEMALLOC) ||
+ (inode->i_sb->s_blocksize == PAGE_CACHE_SIZE)) {
/*
* For memory cleaning there's no point in writing only
* some buffers. So just bail out. Warn if we came here
/* We always reserve for an inode update; the superblock could be there too */
static int ext4_da_write_credits(struct inode *inode, loff_t pos, unsigned len)
{
- if (likely(EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
- EXT4_FEATURE_RO_COMPAT_LARGE_FILE)))
+ if (likely(ext4_has_feature_large_file(inode->i_sb)))
return 1;
if (pos + len <= 0x7fffffffULL)
/* We expect the key to be set. */
BUG_ON(!ext4_has_encryption_key(inode));
BUG_ON(blocksize != PAGE_CACHE_SIZE);
- WARN_ON_ONCE(ext4_decrypt_one(inode, page));
+ WARN_ON_ONCE(ext4_decrypt(page));
}
}
if (ext4_should_journal_data(inode)) {
iloc->bh = NULL;
if (!ext4_valid_inum(sb, inode->i_ino))
- return -EIO;
+ return -EFSCORRUPTED;
iloc->block_group = (inode->i_ino - 1) / EXT4_INODES_PER_GROUP(sb);
gdp = ext4_get_group_desc(sb, iloc->block_group, NULL);
struct inode *inode = &(ei->vfs_inode);
struct super_block *sb = inode->i_sb;
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
+ if (ext4_has_feature_huge_file(sb)) {
/* we are using combined 48 bit field */
i_blocks = ((u64)le16_to_cpu(raw_inode->i_blocks_high)) << 32 |
le32_to_cpu(raw_inode->i_blocks_lo);
EXT4_ERROR_INODE(inode, "bad extra_isize (%u != %u)",
EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize,
EXT4_INODE_SIZE(inode->i_sb));
- ret = -EIO;
+ ret = -EFSCORRUPTED;
goto bad_inode;
}
} else
if (!ext4_inode_csum_verify(inode, raw_inode, ei)) {
EXT4_ERROR_INODE(inode, "checksum invalid");
- ret = -EIO;
+ ret = -EFSBADCRC;
goto bad_inode;
}
ei->i_flags = le32_to_cpu(raw_inode->i_flags);
inode->i_blocks = ext4_inode_blocks(raw_inode, ei);
ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl_lo);
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT))
+ if (ext4_has_feature_64bit(sb))
ei->i_file_acl |=
((__u64)le16_to_cpu(raw_inode->i_file_acl_high)) << 32;
inode->i_size = ext4_isize(raw_inode);
!ext4_data_block_valid(EXT4_SB(sb), ei->i_file_acl, 1)) {
EXT4_ERROR_INODE(inode, "bad extended attribute block %llu",
ei->i_file_acl);
- ret = -EIO;
+ ret = -EFSCORRUPTED;
goto bad_inode;
} else if (!ext4_has_inline_data(inode)) {
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
} else if (ino == EXT4_BOOT_LOADER_INO) {
make_bad_inode(inode);
} else {
- ret = -EIO;
+ ret = -EFSCORRUPTED;
EXT4_ERROR_INODE(inode, "bogus i_mode (%o)", inode->i_mode);
goto bad_inode;
}
struct inode *ext4_iget_normal(struct super_block *sb, unsigned long ino)
{
if (ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO)
- return ERR_PTR(-EIO);
+ return ERR_PTR(-EFSCORRUPTED);
return ext4_iget(sb, ino);
}
ext4_clear_inode_flag(inode, EXT4_INODE_HUGE_FILE);
return 0;
}
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_HUGE_FILE))
+ if (!ext4_has_feature_huge_file(sb))
return -EFBIG;
if (i_blocks <= 0xffffffffffffULL) {
need_datasync = 1;
}
if (ei->i_disksize > 0x7fffffffULL) {
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_LARGE_FILE) ||
+ if (!ext4_has_feature_large_file(sb) ||
EXT4_SB(sb)->s_es->s_rev_level ==
cpu_to_le32(EXT4_GOOD_OLD_REV))
set_large_file = 1;
if (err)
goto out_brelse;
ext4_update_dynamic_rev(sb);
- EXT4_SET_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_LARGE_FILE);
+ ext4_set_feature_large_file(sb);
ext4_handle_sync(handle);
err = ext4_handle_dirty_super(handle, sb);
}
inode_bl->i_version = 1;
i_size_write(inode_bl, 0);
inode_bl->i_mode = S_IFREG;
- if (EXT4_HAS_INCOMPAT_FEATURE(sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS)) {
+ if (ext4_has_feature_extents(sb)) {
ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS);
ext4_ext_tree_init(handle, inode_bl);
} else
goto group_extend_out;
}
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
+ if (ext4_has_feature_bigalloc(sb)) {
ext4_msg(sb, KERN_ERR,
"Online resizing not supported with bigalloc");
err = -EOPNOTSUPP;
goto mext_out;
}
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
+ if (ext4_has_feature_bigalloc(sb)) {
ext4_msg(sb, KERN_ERR,
"Online defrag not supported with bigalloc");
err = -EOPNOTSUPP;
goto group_add_out;
}
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
+ if (ext4_has_feature_bigalloc(sb)) {
ext4_msg(sb, KERN_ERR,
"Online resizing not supported with bigalloc");
err = -EOPNOTSUPP;
int err = 0, err2 = 0;
ext4_group_t o_group = EXT4_SB(sb)->s_groups_count;
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
+ if (ext4_has_feature_bigalloc(sb)) {
ext4_msg(sb, KERN_ERR,
"Online resizing not (yet) supported with bigalloc");
return -EOPNOTSUPP;
bh[i] = NULL;
continue;
}
- if (!(bh[i] = ext4_read_block_bitmap_nowait(sb, group))) {
- err = -ENOMEM;
+ bh[i] = ext4_read_block_bitmap_nowait(sb, group);
+ if (IS_ERR(bh[i])) {
+ err = PTR_ERR(bh[i]);
+ bh[i] = NULL;
goto out;
}
mb_debug(1, "read bitmap for group %u\n", group);
/* wait for I/O completion */
for (i = 0, group = first_group; i < groups_per_page; i++, group++) {
- if (bh[i] && ext4_wait_block_bitmap(sb, group, bh[i]))
- err = -EIO;
+ int err2;
+
+ if (!bh[i])
+ continue;
+ err2 = ext4_wait_block_bitmap(sb, group, bh[i]);
+ if (!err)
+ err = err2;
}
first_block = page->index * blocks_per_page;
}
-static const struct file_operations ext4_mb_seq_groups_fops = {
+const struct file_operations ext4_seq_mb_groups_fops = {
.owner = THIS_MODULE,
.open = ext4_mb_seq_groups_open,
.read = seq_read,
kmalloc(sb->s_blocksize, GFP_NOFS);
BUG_ON(meta_group_info[i]->bb_bitmap == NULL);
bh = ext4_read_block_bitmap(sb, group);
- BUG_ON(bh == NULL);
+ BUG_ON(IS_ERR_OR_NULL(bh));
memcpy(meta_group_info[i]->bb_bitmap, bh->b_data,
sb->s_blocksize);
put_bh(bh);
if (ret != 0)
goto out_free_locality_groups;
- if (sbi->s_proc)
- proc_create_data("mb_groups", S_IRUGO, sbi->s_proc,
- &ext4_mb_seq_groups_fops, sb);
-
return 0;
out_free_locality_groups:
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct kmem_cache *cachep = get_groupinfo_cache(sb->s_blocksize_bits);
- if (sbi->s_proc)
- remove_proc_entry("mb_groups", sbi->s_proc);
-
if (sbi->s_group_info) {
for (i = 0; i < ngroups; i++) {
grinfo = ext4_get_group_info(sb, i);
sb = ac->ac_sb;
sbi = EXT4_SB(sb);
- err = -EIO;
bitmap_bh = ext4_read_block_bitmap(sb, ac->ac_b_ex.fe_group);
- if (!bitmap_bh)
+ if (IS_ERR(bitmap_bh)) {
+ err = PTR_ERR(bitmap_bh);
+ bitmap_bh = NULL;
goto out_err;
+ }
BUFFER_TRACE(bitmap_bh, "getting write access");
err = ext4_journal_get_write_access(handle, bitmap_bh);
atomic_inc(&pa->pa_count);
return pa;
}
- cur_distance = abs(goal_block - cpa->pa_pstart);
- new_distance = abs(goal_block - pa->pa_pstart);
+ cur_distance = abs64(goal_block - cpa->pa_pstart);
+ new_distance = abs64(goal_block - pa->pa_pstart);
if (cur_distance <= new_distance)
return cpa;
return 0;
bitmap_bh = ext4_read_block_bitmap(sb, group);
- if (bitmap_bh == NULL) {
- ext4_error(sb, "Error reading block bitmap for %u", group);
+ if (IS_ERR(bitmap_bh)) {
+ err = PTR_ERR(bitmap_bh);
+ ext4_error(sb, "Error %d reading block bitmap for %u",
+ err, group);
return 0;
}
}
bitmap_bh = ext4_read_block_bitmap(sb, group);
- if (bitmap_bh == NULL) {
- ext4_error(sb, "Error reading block bitmap for %u",
- group);
+ if (IS_ERR(bitmap_bh)) {
+ err = PTR_ERR(bitmap_bh);
+ ext4_error(sb, "Error %d reading block bitmap for %u",
+ err, group);
ext4_mb_unload_buddy(&e4b);
continue;
}
ext4_debug("freeing block %llu\n", block);
trace_ext4_free_blocks(inode, block, count, flags);
- if (flags & EXT4_FREE_BLOCKS_FORGET) {
- struct buffer_head *tbh = bh;
- int i;
-
- BUG_ON(bh && (count > 1));
+ if (bh && (flags & EXT4_FREE_BLOCKS_FORGET)) {
+ BUG_ON(count > 1);
- for (i = 0; i < count; i++) {
- cond_resched();
- if (!bh)
- tbh = sb_find_get_block(inode->i_sb,
- block + i);
- if (!tbh)
- continue;
- ext4_forget(handle, flags & EXT4_FREE_BLOCKS_METADATA,
- inode, tbh, block + i);
- }
+ ext4_forget(handle, flags & EXT4_FREE_BLOCKS_METADATA,
+ inode, bh, block);
}
/*
count += sbi->s_cluster_ratio - overflow;
}
+ if (!bh && (flags & EXT4_FREE_BLOCKS_FORGET)) {
+ int i;
+
+ for (i = 0; i < count; i++) {
+ cond_resched();
+ bh = sb_find_get_block(inode->i_sb, block + i);
+ if (!bh)
+ continue;
+ ext4_forget(handle, flags & EXT4_FREE_BLOCKS_METADATA,
+ inode, bh, block + i);
+ }
+ }
+
do_more:
overflow = 0;
ext4_get_group_no_and_offset(sb, block, &block_group, &bit);
}
count_clusters = EXT4_NUM_B2C(sbi, count);
bitmap_bh = ext4_read_block_bitmap(sb, block_group);
- if (!bitmap_bh) {
- err = -EIO;
+ if (IS_ERR(bitmap_bh)) {
+ err = PTR_ERR(bitmap_bh);
+ bitmap_bh = NULL;
goto error_return;
}
gdp = ext4_get_group_desc(sb, block_group, &gd_bh);
}
bitmap_bh = ext4_read_block_bitmap(sb, block_group);
- if (!bitmap_bh) {
- err = -EIO;
+ if (IS_ERR(bitmap_bh)) {
+ err = PTR_ERR(bitmap_bh);
+ bitmap_bh = NULL;
goto error_return;
}
* If the filesystem does not support extents, or the inode
* already is extent-based, error out.
*/
- if (!EXT4_HAS_INCOMPAT_FEATURE(inode->i_sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS) ||
+ if (!ext4_has_feature_extents(inode->i_sb) ||
(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
return -EINVAL;
handle_t *handle;
int ret;
- if (!EXT4_HAS_INCOMPAT_FEATURE(inode->i_sb,
- EXT4_FEATURE_INCOMPAT_EXTENTS) ||
+ if (!ext4_has_feature_extents(inode->i_sb) ||
(!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
return -EINVAL;
- if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
- EXT4_FEATURE_RO_COMPAT_BIGALLOC))
+ if (ext4_has_feature_bigalloc(inode->i_sb))
return -EOPNOTSUPP;
/*
}
mmp = (struct mmp_struct *)((*bh)->b_data);
- if (le32_to_cpu(mmp->mmp_magic) == EXT4_MMP_MAGIC &&
- ext4_mmp_csum_verify(sb, mmp))
+ if (le32_to_cpu(mmp->mmp_magic) != EXT4_MMP_MAGIC)
+ ret = -EFSCORRUPTED;
+ else if (!ext4_mmp_csum_verify(sb, mmp))
+ ret = -EFSBADCRC;
+ else
return 0;
- ret = -EINVAL;
warn_exit:
ext4_warning(sb, "Error %d while reading MMP block %llu",
if (!bh) {
ext4_error_inode(inode, func, line, block,
"Directory hole found");
- return ERR_PTR(-EIO);
+ return ERR_PTR(-EFSCORRUPTED);
}
dirent = (struct ext4_dir_entry *) bh->b_data;
/* Determine whether or not we have an index block */
if (!is_dx_block && type == INDEX) {
ext4_error_inode(inode, func, line, block,
"directory leaf block found instead of index block");
- return ERR_PTR(-EIO);
+ return ERR_PTR(-EFSCORRUPTED);
}
if (!ext4_has_metadata_csum(inode->i_sb) ||
buffer_verified(bh))
ext4_error_inode(inode, func, line, block,
"Directory index failed checksum");
brelse(bh);
- return ERR_PTR(-EIO);
+ return ERR_PTR(-EFSBADCRC);
}
}
if (!is_dx_block) {
ext4_error_inode(inode, func, line, block,
"Directory block failed checksum");
brelse(bh);
- return ERR_PTR(-EIO);
+ return ERR_PTR(-EFSBADCRC);
}
}
return bh;
brelse(bh);
if (!ext4_valid_inum(dir->i_sb, ino)) {
EXT4_ERROR_INODE(dir, "bad inode number: %u", ino);
- return ERR_PTR(-EIO);
+ return ERR_PTR(-EFSCORRUPTED);
}
if (unlikely(ino == dir->i_ino)) {
EXT4_ERROR_INODE(dir, "'%pd' linked to parent dir",
dentry);
- return ERR_PTR(-EIO);
+ return ERR_PTR(-EFSCORRUPTED);
}
inode = ext4_iget_normal(dir->i_sb, ino);
if (inode == ERR_PTR(-ESTALE)) {
EXT4_ERROR_INODE(dir,
"deleted inode referenced: %u",
ino);
- return ERR_PTR(-EIO);
+ return ERR_PTR(-EFSCORRUPTED);
}
if (!IS_ERR(inode) && ext4_encrypted_inode(dir) &&
(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
if (!ext4_valid_inum(d_inode(child)->i_sb, ino)) {
EXT4_ERROR_INODE(d_inode(child),
"bad parent inode number: %u", ino);
- return ERR_PTR(-EIO);
+ return ERR_PTR(-EFSCORRUPTED);
}
return d_obtain_alias(ext4_iget_normal(d_inode(child)->i_sb, ino));
while ((char *) de <= top) {
if (ext4_check_dir_entry(dir, NULL, de, bh,
buf, buf_size, offset)) {
- res = -EIO;
+ res = -EFSCORRUPTED;
goto return_result;
}
/* Provide crypto context and crypto buffer to ext4 match */
if ((char *) de >= (((char *) root) + blocksize)) {
EXT4_ERROR_INODE(dir, "invalid rec_len for '..'");
brelse(bh);
- return -EIO;
+ return -EFSCORRUPTED;
}
len = ((char *) root) + (blocksize - csum_size) - (char *) de;
goto out;
if (blocks == 1 && !dx_fallback &&
- EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_DIR_INDEX)) {
+ ext4_has_feature_dir_index(sb)) {
retval = make_indexed_dir(handle, &fname, dentry,
inode, bh);
bh = NULL; /* make_indexed_dir releases bh */
while (i < buf_size - csum_size) {
if (ext4_check_dir_entry(dir, NULL, de, bh,
bh->b_data, bh->b_size, i))
- return -EIO;
+ return -EFSCORRUPTED;
if (de == de_del) {
if (pde)
pde->rec_len = ext4_rec_len_to_disk(
/* limit is 16-bit i_links_count */
if (inode->i_nlink >= EXT4_LINK_MAX || inode->i_nlink == 2) {
set_nlink(inode, 1);
- EXT4_SET_RO_COMPAT_FEATURE(inode->i_sb,
- EXT4_FEATURE_RO_COMPAT_DIR_NLINK);
+ ext4_set_feature_dir_nlink(inode->i_sb);
}
}
}
struct inode *inode;
int err, credits, retries = 0;
- if (!new_valid_dev(rdev))
- return -EINVAL;
-
err = dquot_initialize(dir);
if (err)
return err;
inode = d_inode(dentry);
- retval = -EIO;
+ retval = -EFSCORRUPTED;
if (le32_to_cpu(de->inode) != inode->i_ino)
goto end_rmdir;
inode = d_inode(dentry);
- retval = -EIO;
+ retval = -EFSCORRUPTED;
if (le32_to_cpu(de->inode) != inode->i_ino)
goto end_unlink;
if (!ent->dir_bh)
return retval;
if (le32_to_cpu(ent->parent_de->inode) != ent->dir->i_ino)
- return -EIO;
+ return -EFSCORRUPTED;
BUFFER_TRACE(ent->dir_bh, "get_write_access");
return ext4_journal_get_write_access(handle, ent->dir_bh);
}
if (retval)
return retval;
ent->de->inode = cpu_to_le32(ino);
- if (EXT4_HAS_INCOMPAT_FEATURE(ent->dir->i_sb,
- EXT4_FEATURE_INCOMPAT_FILETYPE))
+ if (ext4_has_feature_filetype(ent->dir->i_sb))
ent->de->file_type = file_type;
ent->dir->i_version++;
ent->dir->i_ctime = ent->dir->i_mtime =
struct buffer_head *bh, *head;
int ret = 0;
int nr_submitted = 0;
+ int nr_to_submit = 0;
blocksize = 1 << inode->i_blkbits;
unmap_underlying_metadata(bh->b_bdev, bh->b_blocknr);
}
set_buffer_async_write(bh);
+ nr_to_submit++;
} while ((bh = bh->b_this_page) != head);
bh = head = page_buffers(page);
- if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode)) {
+ if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode) &&
+ nr_to_submit) {
data_page = ext4_encrypt(inode, page);
if (IS_ERR(data_page)) {
ret = PTR_ERR(data_page);
bio_for_each_segment_all(bv, bio, i) {
struct page *page = bv->bv_page;
- int ret = ext4_decrypt(ctx, page);
+ int ret = ext4_decrypt(page);
if (ret) {
WARN_ON_ONCE(1);
SetPageError(page);
group_data[0].group != sbi->s_groups_count);
reserved_gdb = le16_to_cpu(es->s_reserved_gdt_blocks);
- meta_bg = EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_META_BG);
+ meta_bg = ext4_has_feature_meta_bg(sb);
/* This transaction may be extended/restarted along the way */
handle = ext4_journal_start_sb(sb, EXT4_HT_RESIZE, EXT4_MAX_TRANS_DATA);
int mult = 3;
unsigned ret;
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
+ if (!ext4_has_feature_sparse_super(sb)) {
ret = *min;
*min += 1;
return ret;
* do not copy the full number of backups at this time. The resize
* which changed s_groups_count will backup again.
*/
-static void update_backups(struct super_block *sb, int blk_off, char *data,
+static void update_backups(struct super_block *sb, sector_t blk_off, char *data,
int size, int meta_bg)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
group = ext4_list_backups(sb, &three, &five, &seven);
last = sbi->s_groups_count;
} else {
- group = ext4_meta_bg_first_group(sb, group) + 1;
+ group = ext4_get_group_number(sb, blk_off) + 1;
last = (ext4_group_t)(group + EXT4_DESC_PER_BLOCK(sb) - 2);
}
int i, gdb_off, gdb_num, err = 0;
int meta_bg;
- meta_bg = EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_META_BG);
+ meta_bg = ext4_has_feature_meta_bg(sb);
for (i = 0; i < count; i++, group++) {
int reserved_gdb = ext4_bg_has_super(sb, group) ?
le16_to_cpu(es->s_reserved_gdt_blocks) : 0;
ext4_debug("free blocks count %llu",
percpu_counter_read(&sbi->s_freeclusters_counter));
- if (EXT4_HAS_INCOMPAT_FEATURE(sb,
- EXT4_FEATURE_INCOMPAT_FLEX_BG) &&
- sbi->s_log_groups_per_flex) {
+ if (ext4_has_feature_flex_bg(sb) && sbi->s_log_groups_per_flex) {
ext4_group_t flex_group;
flex_group = ext4_flex_group(sbi, group_data[0].group);
atomic64_add(EXT4_NUM_B2C(sbi, free_blocks),
int gdb_num = group / EXT4_DESC_PER_BLOCK(sb);
int gdb_num_end = ((group + flex_gd->count - 1) /
EXT4_DESC_PER_BLOCK(sb));
- int meta_bg = EXT4_HAS_INCOMPAT_FEATURE(sb,
- EXT4_FEATURE_INCOMPAT_META_BG);
+ int meta_bg = ext4_has_feature_meta_bg(sb);
sector_t old_gdb = 0;
update_backups(sb, sbi->s_sbh->b_blocknr, (char *)es,
gdb_off = input->group % EXT4_DESC_PER_BLOCK(sb);
- if (gdb_off == 0 && !EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
+ if (gdb_off == 0 && !ext4_has_feature_sparse_super(sb)) {
ext4_warning(sb, "Can't resize non-sparse filesystem further");
return -EPERM;
}
}
if (reserved_gdb || gdb_off == 0) {
- if (!EXT4_HAS_COMPAT_FEATURE(sb,
- EXT4_FEATURE_COMPAT_RESIZE_INODE)
- || !le16_to_cpu(es->s_reserved_gdt_blocks)) {
+ if (ext4_has_feature_resize_inode(sb) ||
+ !le16_to_cpu(es->s_reserved_gdt_blocks)) {
ext4_warning(sb,
"No reserved GDT blocks, can't resize");
return -EPERM;
if (err)
goto errout;
- EXT4_CLEAR_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_RESIZE_INODE);
- EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_META_BG);
+ ext4_clear_feature_resize_inode(sb);
+ ext4_set_feature_meta_bg(sb);
sbi->s_es->s_first_meta_bg =
cpu_to_le32(num_desc_blocks(sb, sbi->s_groups_count));
n_desc_blocks = num_desc_blocks(sb, n_group + 1);
o_desc_blocks = num_desc_blocks(sb, sbi->s_groups_count);
- meta_bg = EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_META_BG);
+ meta_bg = ext4_has_feature_meta_bg(sb);
- if (EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_RESIZE_INODE)) {
+ if (ext4_has_feature_resize_inode(sb)) {
if (meta_bg) {
ext4_error(sb, "resize_inode and meta_bg enabled "
"simultaneously");
#include <linux/namei.h>
#include <linux/quotaops.h>
#include <linux/seq_file.h>
-#include <linux/proc_fs.h>
#include <linux/ctype.h>
#include <linux/log2.h>
#include <linux/crc16.h>
#define CREATE_TRACE_POINTS
#include <trace/events/ext4.h>
-static struct proc_dir_entry *ext4_proc_root;
-static struct kset *ext4_kset;
static struct ext4_lazy_init *ext4_li_info;
static struct mutex ext4_li_mtx;
-static struct ext4_features *ext4_feat;
static int ext4_mballoc_ready;
static struct ratelimit_state ext4_mount_msg_ratelimit;
static void ext4_destroy_lazyinit_thread(void);
static void ext4_unregister_li_request(struct super_block *sb);
static void ext4_clear_request_list(void);
-static int ext4_reserve_clusters(struct ext4_sb_info *, ext4_fsblk_t);
#if !defined(CONFIG_EXT2_FS) && !defined(CONFIG_EXT2_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT2)
static struct file_system_type ext2_fs_type = {
static int ext4_verify_csum_type(struct super_block *sb,
struct ext4_super_block *es)
{
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
+ if (!ext4_has_feature_metadata_csum(sb))
return 1;
return es->s_checksum_type == EXT4_CRC32C_CHKSUM;
smp_wmb();
sb->s_flags |= MS_RDONLY;
}
- if (test_opt(sb, ERRORS_PANIC))
+ if (test_opt(sb, ERRORS_PANIC)) {
+ if (EXT4_SB(sb)->s_journal &&
+ !(EXT4_SB(sb)->s_journal->j_flags & JBD2_REC_ERR))
+ return;
panic("EXT4-fs (device %s): panic forced after error\n",
sb->s_id);
+ }
}
#define ext4_error_ratelimit(sb) \
char *errstr = NULL;
switch (errno) {
+ case -EFSCORRUPTED:
+ errstr = "Corrupt filesystem";
+ break;
+ case -EFSBADCRC:
+ errstr = "Filesystem failed CRC";
+ break;
case -EIO:
errstr = "IO failure";
break;
jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO);
save_error_info(sb, function, line);
}
- if (test_opt(sb, ERRORS_PANIC))
+ if (test_opt(sb, ERRORS_PANIC)) {
+ if (EXT4_SB(sb)->s_journal &&
+ !(EXT4_SB(sb)->s_journal->j_flags & JBD2_REC_ERR))
+ return;
panic("EXT4-fs panic from previous error\n");
+ }
}
void __ext4_msg(struct super_block *sb,
ext4_abort(sb, "Couldn't clean up the journal");
}
+ ext4_unregister_sysfs(sb);
ext4_es_unregister_shrinker(sbi);
del_timer_sync(&sbi->s_err_report);
ext4_release_system_zone(sb);
ext4_xattr_put_super(sb);
if (!(sb->s_flags & MS_RDONLY)) {
- EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ ext4_clear_feature_journal_needs_recovery(sb);
es->s_state = cpu_to_le16(sbi->s_mount_state);
}
if (!(sb->s_flags & MS_RDONLY))
ext4_commit_super(sb, 1);
- if (sbi->s_proc) {
- remove_proc_entry("options", sbi->s_proc);
- remove_proc_entry(sb->s_id, ext4_proc_root);
- }
- kobject_del(&sbi->s_kobj);
-
for (i = 0; i < sbi->s_gdb_count; i++)
brelse(sbi->s_group_desc[i]);
kvfree(sbi->s_group_desc);
"quota options when quota turned on");
return -1;
}
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) {
+ if (ext4_has_feature_quota(sb)) {
ext4_msg(sb, KERN_ERR, "Cannot set journaled quota options "
"when QUOTA feature is enabled");
return -1;
{Opt_nojournal_checksum, EXT4_MOUNT_JOURNAL_CHECKSUM,
MOPT_EXT4_ONLY | MOPT_CLEAR},
{Opt_journal_checksum, EXT4_MOUNT_JOURNAL_CHECKSUM,
- MOPT_EXT4_ONLY | MOPT_SET},
+ MOPT_EXT4_ONLY | MOPT_SET | MOPT_EXPLICIT},
{Opt_journal_async_commit, (EXT4_MOUNT_JOURNAL_ASYNC_COMMIT |
EXT4_MOUNT_JOURNAL_CHECKSUM),
- MOPT_EXT4_ONLY | MOPT_SET},
+ MOPT_EXT4_ONLY | MOPT_SET | MOPT_EXPLICIT},
{Opt_noload, EXT4_MOUNT_NOLOAD, MOPT_NO_EXT2 | MOPT_SET},
{Opt_err_panic, EXT4_MOUNT_ERRORS_PANIC, MOPT_SET | MOPT_CLEAR_ERR},
{Opt_err_ro, EXT4_MOUNT_ERRORS_RO, MOPT_SET | MOPT_CLEAR_ERR},
return -1;
if (args->from && (m->flags & MOPT_GTE0) && (arg < 0))
return -1;
- if (m->flags & MOPT_EXPLICIT)
- set_opt2(sb, EXPLICIT_DELALLOC);
+ if (m->flags & MOPT_EXPLICIT) {
+ if (m->mount_opt & EXT4_MOUNT_DELALLOC) {
+ set_opt2(sb, EXPLICIT_DELALLOC);
+ } else if (m->mount_opt & EXT4_MOUNT_JOURNAL_CHECKSUM) {
+ set_opt2(sb, EXPLICIT_JOURNAL_CHECKSUM);
+ } else
+ return -1;
+ }
if (m->flags & MOPT_CLEAR_ERR)
clear_opt(sb, ERRORS_MASK);
if (token == Opt_noquota && sb_any_quota_loaded(sb)) {
"quota options when quota turned on");
return -1;
}
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_QUOTA)) {
+ if (ext4_has_feature_quota(sb)) {
ext4_msg(sb, KERN_ERR,
"Cannot set journaled quota options "
"when QUOTA feature is enabled");
return 0;
}
#ifdef CONFIG_QUOTA
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) &&
+ if (ext4_has_feature_quota(sb) &&
(test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) {
ext4_msg(sb, KERN_ERR, "Cannot set quota options when QUOTA "
"feature is enabled");
return _ext4_show_options(seq, root->d_sb, 0);
}
-static int options_seq_show(struct seq_file *seq, void *offset)
+int ext4_seq_options_show(struct seq_file *seq, void *offset)
{
struct super_block *sb = seq->private;
int rc;
return rc;
}
-static int options_open_fs(struct inode *inode, struct file *file)
-{
- return single_open(file, options_seq_show, PDE_DATA(inode));
-}
-
-static const struct file_operations ext4_seq_options_fops = {
- .owner = THIS_MODULE,
- .open = options_open_fs,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
int read_only)
{
es->s_mtime = cpu_to_le32(get_seconds());
ext4_update_dynamic_rev(sb);
if (sbi->s_journal)
- EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ ext4_set_feature_journal_needs_recovery(sb);
ext4_commit_super(sb, 1);
done:
return 0;
}
-static __le16 ext4_group_desc_csum(struct ext4_sb_info *sbi, __u32 block_group,
+static __le16 ext4_group_desc_csum(struct super_block *sb, __u32 block_group,
struct ext4_group_desc *gdp)
{
int offset;
__u16 crc = 0;
__le32 le_group = cpu_to_le32(block_group);
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
if (ext4_has_metadata_csum(sbi->s_sb)) {
/* Use new metadata_csum algorithm */
}
/* old crc16 code */
- if (!(sbi->s_es->s_feature_ro_compat &
- cpu_to_le32(EXT4_FEATURE_RO_COMPAT_GDT_CSUM)))
+ if (!ext4_has_feature_gdt_csum(sb))
return 0;
offset = offsetof(struct ext4_group_desc, bg_checksum);
crc = crc16(crc, (__u8 *)gdp, offset);
offset += sizeof(gdp->bg_checksum); /* skip checksum */
/* for checksum of struct ext4_group_desc do the rest...*/
- if ((sbi->s_es->s_feature_incompat &
- cpu_to_le32(EXT4_FEATURE_INCOMPAT_64BIT)) &&
+ if (ext4_has_feature_64bit(sb) &&
offset < le16_to_cpu(sbi->s_es->s_desc_size))
crc = crc16(crc, (__u8 *)gdp + offset,
le16_to_cpu(sbi->s_es->s_desc_size) -
struct ext4_group_desc *gdp)
{
if (ext4_has_group_desc_csum(sb) &&
- (gdp->bg_checksum != ext4_group_desc_csum(EXT4_SB(sb),
- block_group, gdp)))
+ (gdp->bg_checksum != ext4_group_desc_csum(sb, block_group, gdp)))
return 0;
return 1;
{
if (!ext4_has_group_desc_csum(sb))
return;
- gdp->bg_checksum = ext4_group_desc_csum(EXT4_SB(sb), block_group, gdp);
+ gdp->bg_checksum = ext4_group_desc_csum(sb, block_group, gdp);
}
/* Called at mount-time, super-block is locked */
int flexbg_flag = 0;
ext4_group_t i, grp = sbi->s_groups_count;
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG))
+ if (ext4_has_feature_flex_bg(sb))
flexbg_flag = 1;
ext4_debug("Checking group descriptors");
if (!ext4_group_desc_csum_verify(sb, i, gdp)) {
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Checksum for group %u failed (%u!=%u)",
- i, le16_to_cpu(ext4_group_desc_csum(sbi, i,
+ i, le16_to_cpu(ext4_group_desc_csum(sb, i,
gdp)), le16_to_cpu(gdp->bg_checksum));
if (!(sb->s_flags & MS_RDONLY)) {
ext4_unlock_group(sb, i);
first_meta_bg = le32_to_cpu(sbi->s_es->s_first_meta_bg);
- if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_META_BG) ||
- nr < first_meta_bg)
+ if (!ext4_has_feature_meta_bg(sb) || nr < first_meta_bg)
return logical_sb_block + nr + 1;
bg = sbi->s_desc_per_block * nr;
if (ext4_bg_has_super(sb, bg))
return ret;
}
-/* sysfs supprt */
-
-struct ext4_attr {
- struct attribute attr;
- ssize_t (*show)(struct ext4_attr *, struct ext4_sb_info *, char *);
- ssize_t (*store)(struct ext4_attr *, struct ext4_sb_info *,
- const char *, size_t);
- union {
- int offset;
- int deprecated_val;
- } u;
-};
-
-static int parse_strtoull(const char *buf,
- unsigned long long max, unsigned long long *value)
-{
- int ret;
-
- ret = kstrtoull(skip_spaces(buf), 0, value);
- if (!ret && *value > max)
- ret = -EINVAL;
- return ret;
-}
-
-static ssize_t delayed_allocation_blocks_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi,
- char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%llu\n",
- (s64) EXT4_C2B(sbi,
- percpu_counter_sum(&sbi->s_dirtyclusters_counter)));
-}
-
-static ssize_t session_write_kbytes_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi, char *buf)
-{
- struct super_block *sb = sbi->s_buddy_cache->i_sb;
-
- if (!sb->s_bdev->bd_part)
- return snprintf(buf, PAGE_SIZE, "0\n");
- return snprintf(buf, PAGE_SIZE, "%lu\n",
- (part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
- sbi->s_sectors_written_start) >> 1);
-}
-
-static ssize_t lifetime_write_kbytes_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi, char *buf)
-{
- struct super_block *sb = sbi->s_buddy_cache->i_sb;
-
- if (!sb->s_bdev->bd_part)
- return snprintf(buf, PAGE_SIZE, "0\n");
- return snprintf(buf, PAGE_SIZE, "%llu\n",
- (unsigned long long)(sbi->s_kbytes_written +
- ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
- EXT4_SB(sb)->s_sectors_written_start) >> 1)));
-}
-
-static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
- struct ext4_sb_info *sbi,
- const char *buf, size_t count)
-{
- unsigned long t;
- int ret;
-
- ret = kstrtoul(skip_spaces(buf), 0, &t);
- if (ret)
- return ret;
-
- if (t && (!is_power_of_2(t) || t > 0x40000000))
- return -EINVAL;
-
- sbi->s_inode_readahead_blks = t;
- return count;
-}
-
-static ssize_t sbi_ui_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi, char *buf)
-{
- unsigned int *ui = (unsigned int *) (((char *) sbi) + a->u.offset);
-
- return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
-}
-
-static ssize_t sbi_ui_store(struct ext4_attr *a,
- struct ext4_sb_info *sbi,
- const char *buf, size_t count)
-{
- unsigned int *ui = (unsigned int *) (((char *) sbi) + a->u.offset);
- unsigned long t;
- int ret;
-
- ret = kstrtoul(skip_spaces(buf), 0, &t);
- if (ret)
- return ret;
- *ui = t;
- return count;
-}
-
-static ssize_t es_ui_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi, char *buf)
-{
-
- unsigned int *ui = (unsigned int *) (((char *) sbi->s_es) +
- a->u.offset);
-
- return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
-}
-
-static ssize_t reserved_clusters_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%llu\n",
- (unsigned long long) atomic64_read(&sbi->s_resv_clusters));
-}
-
-static ssize_t reserved_clusters_store(struct ext4_attr *a,
- struct ext4_sb_info *sbi,
- const char *buf, size_t count)
-{
- unsigned long long val;
- int ret;
-
- if (parse_strtoull(buf, -1ULL, &val))
- return -EINVAL;
- ret = ext4_reserve_clusters(sbi, val);
-
- return ret ? ret : count;
-}
-
-static ssize_t trigger_test_error(struct ext4_attr *a,
- struct ext4_sb_info *sbi,
- const char *buf, size_t count)
-{
- int len = count;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (len && buf[len-1] == '\n')
- len--;
-
- if (len)
- ext4_error(sbi->s_sb, "%.*s", len, buf);
- return count;
-}
-
-static ssize_t sbi_deprecated_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%d\n", a->u.deprecated_val);
-}
-
-#define EXT4_ATTR_OFFSET(_name,_mode,_show,_store,_elname) \
-static struct ext4_attr ext4_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode }, \
- .show = _show, \
- .store = _store, \
- .u = { \
- .offset = offsetof(struct ext4_sb_info, _elname),\
- }, \
-}
-
-#define EXT4_ATTR_OFFSET_ES(_name,_mode,_show,_store,_elname) \
-static struct ext4_attr ext4_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode }, \
- .show = _show, \
- .store = _store, \
- .u = { \
- .offset = offsetof(struct ext4_super_block, _elname), \
- }, \
-}
-
-#define EXT4_ATTR(name, mode, show, store) \
-static struct ext4_attr ext4_attr_##name = __ATTR(name, mode, show, store)
-
-#define EXT4_INFO_ATTR(name) EXT4_ATTR(name, 0444, NULL, NULL)
-#define EXT4_RO_ATTR(name) EXT4_ATTR(name, 0444, name##_show, NULL)
-#define EXT4_RW_ATTR(name) EXT4_ATTR(name, 0644, name##_show, name##_store)
-
-#define EXT4_RO_ATTR_ES_UI(name, elname) \
- EXT4_ATTR_OFFSET_ES(name, 0444, es_ui_show, NULL, elname)
-#define EXT4_RW_ATTR_SBI_UI(name, elname) \
- EXT4_ATTR_OFFSET(name, 0644, sbi_ui_show, sbi_ui_store, elname)
-
-#define ATTR_LIST(name) &ext4_attr_##name.attr
-#define EXT4_DEPRECATED_ATTR(_name, _val) \
-static struct ext4_attr ext4_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = 0444 }, \
- .show = sbi_deprecated_show, \
- .u = { \
- .deprecated_val = _val, \
- }, \
-}
-
-EXT4_RO_ATTR(delayed_allocation_blocks);
-EXT4_RO_ATTR(session_write_kbytes);
-EXT4_RO_ATTR(lifetime_write_kbytes);
-EXT4_RW_ATTR(reserved_clusters);
-EXT4_ATTR_OFFSET(inode_readahead_blks, 0644, sbi_ui_show,
- inode_readahead_blks_store, s_inode_readahead_blks);
-EXT4_RW_ATTR_SBI_UI(inode_goal, s_inode_goal);
-EXT4_RW_ATTR_SBI_UI(mb_stats, s_mb_stats);
-EXT4_RW_ATTR_SBI_UI(mb_max_to_scan, s_mb_max_to_scan);
-EXT4_RW_ATTR_SBI_UI(mb_min_to_scan, s_mb_min_to_scan);
-EXT4_RW_ATTR_SBI_UI(mb_order2_req, s_mb_order2_reqs);
-EXT4_RW_ATTR_SBI_UI(mb_stream_req, s_mb_stream_request);
-EXT4_RW_ATTR_SBI_UI(mb_group_prealloc, s_mb_group_prealloc);
-EXT4_DEPRECATED_ATTR(max_writeback_mb_bump, 128);
-EXT4_RW_ATTR_SBI_UI(extent_max_zeroout_kb, s_extent_max_zeroout_kb);
-EXT4_ATTR(trigger_fs_error, 0200, NULL, trigger_test_error);
-EXT4_RW_ATTR_SBI_UI(err_ratelimit_interval_ms, s_err_ratelimit_state.interval);
-EXT4_RW_ATTR_SBI_UI(err_ratelimit_burst, s_err_ratelimit_state.burst);
-EXT4_RW_ATTR_SBI_UI(warning_ratelimit_interval_ms, s_warning_ratelimit_state.interval);
-EXT4_RW_ATTR_SBI_UI(warning_ratelimit_burst, s_warning_ratelimit_state.burst);
-EXT4_RW_ATTR_SBI_UI(msg_ratelimit_interval_ms, s_msg_ratelimit_state.interval);
-EXT4_RW_ATTR_SBI_UI(msg_ratelimit_burst, s_msg_ratelimit_state.burst);
-EXT4_RO_ATTR_ES_UI(errors_count, s_error_count);
-EXT4_RO_ATTR_ES_UI(first_error_time, s_first_error_time);
-EXT4_RO_ATTR_ES_UI(last_error_time, s_last_error_time);
-
-static struct attribute *ext4_attrs[] = {
- ATTR_LIST(delayed_allocation_blocks),
- ATTR_LIST(session_write_kbytes),
- ATTR_LIST(lifetime_write_kbytes),
- ATTR_LIST(reserved_clusters),
- ATTR_LIST(inode_readahead_blks),
- ATTR_LIST(inode_goal),
- ATTR_LIST(mb_stats),
- ATTR_LIST(mb_max_to_scan),
- ATTR_LIST(mb_min_to_scan),
- ATTR_LIST(mb_order2_req),
- ATTR_LIST(mb_stream_req),
- ATTR_LIST(mb_group_prealloc),
- ATTR_LIST(max_writeback_mb_bump),
- ATTR_LIST(extent_max_zeroout_kb),
- ATTR_LIST(trigger_fs_error),
- ATTR_LIST(err_ratelimit_interval_ms),
- ATTR_LIST(err_ratelimit_burst),
- ATTR_LIST(warning_ratelimit_interval_ms),
- ATTR_LIST(warning_ratelimit_burst),
- ATTR_LIST(msg_ratelimit_interval_ms),
- ATTR_LIST(msg_ratelimit_burst),
- ATTR_LIST(errors_count),
- ATTR_LIST(first_error_time),
- ATTR_LIST(last_error_time),
- NULL,
-};
-
-/* Features this copy of ext4 supports */
-EXT4_INFO_ATTR(lazy_itable_init);
-EXT4_INFO_ATTR(batched_discard);
-EXT4_INFO_ATTR(meta_bg_resize);
-EXT4_INFO_ATTR(encryption);
-
-static struct attribute *ext4_feat_attrs[] = {
- ATTR_LIST(lazy_itable_init),
- ATTR_LIST(batched_discard),
- ATTR_LIST(meta_bg_resize),
- ATTR_LIST(encryption),
- NULL,
-};
-
-static ssize_t ext4_attr_show(struct kobject *kobj,
- struct attribute *attr, char *buf)
-{
- struct ext4_sb_info *sbi = container_of(kobj, struct ext4_sb_info,
- s_kobj);
- struct ext4_attr *a = container_of(attr, struct ext4_attr, attr);
-
- return a->show ? a->show(a, sbi, buf) : 0;
-}
-
-static ssize_t ext4_attr_store(struct kobject *kobj,
- struct attribute *attr,
- const char *buf, size_t len)
-{
- struct ext4_sb_info *sbi = container_of(kobj, struct ext4_sb_info,
- s_kobj);
- struct ext4_attr *a = container_of(attr, struct ext4_attr, attr);
-
- return a->store ? a->store(a, sbi, buf, len) : 0;
-}
-
-static void ext4_sb_release(struct kobject *kobj)
-{
- struct ext4_sb_info *sbi = container_of(kobj, struct ext4_sb_info,
- s_kobj);
- complete(&sbi->s_kobj_unregister);
-}
-
-static const struct sysfs_ops ext4_attr_ops = {
- .show = ext4_attr_show,
- .store = ext4_attr_store,
-};
-
-static struct kobj_type ext4_ktype = {
- .default_attrs = ext4_attrs,
- .sysfs_ops = &ext4_attr_ops,
- .release = ext4_sb_release,
-};
-
-static void ext4_feat_release(struct kobject *kobj)
-{
- complete(&ext4_feat->f_kobj_unregister);
-}
-
-static ssize_t ext4_feat_show(struct kobject *kobj,
- struct attribute *attr, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "supported\n");
-}
-
-/*
- * We can not use ext4_attr_show/store because it relies on the kobject
- * being embedded in the ext4_sb_info structure which is definitely not
- * true in this case.
- */
-static const struct sysfs_ops ext4_feat_ops = {
- .show = ext4_feat_show,
- .store = NULL,
-};
-
-static struct kobj_type ext4_feat_ktype = {
- .default_attrs = ext4_feat_attrs,
- .sysfs_ops = &ext4_feat_ops,
- .release = ext4_feat_release,
-};
-
/*
* Check whether this filesystem can be mounted based on
* the features present and the RDONLY/RDWR mount requested.
*/
static int ext4_feature_set_ok(struct super_block *sb, int readonly)
{
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, ~EXT4_FEATURE_INCOMPAT_SUPP)) {
+ if (ext4_has_unknown_ext4_incompat_features(sb)) {
ext4_msg(sb, KERN_ERR,
"Couldn't mount because of "
"unsupported optional features (%x)",
if (readonly)
return 1;
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_READONLY)) {
+ if (ext4_has_feature_readonly(sb)) {
ext4_msg(sb, KERN_INFO, "filesystem is read-only");
sb->s_flags |= MS_RDONLY;
return 1;
}
/* Check that feature set is OK for a read-write mount */
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, ~EXT4_FEATURE_RO_COMPAT_SUPP)) {
+ if (ext4_has_unknown_ext4_ro_compat_features(sb)) {
ext4_msg(sb, KERN_ERR, "couldn't mount RDWR because of "
"unsupported optional features (%x)",
(le32_to_cpu(EXT4_SB(sb)->s_es->s_feature_ro_compat) &
* Large file size enabled file system can only be mounted
* read-write on 32-bit systems if kernel is built with CONFIG_LBDAF
*/
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
+ if (ext4_has_feature_huge_file(sb)) {
if (sizeof(blkcnt_t) < sizeof(u64)) {
ext4_msg(sb, KERN_ERR, "Filesystem with huge files "
"cannot be mounted RDWR without "
return 0;
}
}
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_BIGALLOC) &&
- !EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
+ if (ext4_has_feature_bigalloc(sb) && !ext4_has_feature_extents(sb)) {
ext4_msg(sb, KERN_ERR,
"Can't support bigalloc feature without "
"extents feature\n");
}
#ifndef CONFIG_QUOTA
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) &&
- !readonly) {
+ if (ext4_has_feature_quota(sb) && !readonly) {
ext4_msg(sb, KERN_ERR,
"Filesystem with quota feature cannot be mounted RDWR "
"without CONFIG_QUOTA");
ext4_group_t i, ngroups = ext4_get_groups_count(sb);
int s, j, count = 0;
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_BIGALLOC))
+ if (!ext4_has_feature_bigalloc(sb))
return (ext4_bg_has_super(sb, grp) + ext4_bg_num_gdb(sb, grp) +
sbi->s_itb_per_group + 2);
return 0;
}
-
-static ext4_fsblk_t ext4_calculate_resv_clusters(struct super_block *sb)
+static void ext4_set_resv_clusters(struct super_block *sb)
{
ext4_fsblk_t resv_clusters;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
/*
* There's no need to reserve anything when we aren't using extents.
* hole punching doesn't need new metadata... This is needed especially
* to keep ext2/3 backward compatibility.
*/
- if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS))
- return 0;
+ if (!ext4_has_feature_extents(sb))
+ return;
/*
* By default we reserve 2% or 4096 clusters, whichever is smaller.
* This should cover the situations where we can not afford to run
* allocation would require 1, or 2 blocks, higher numbers are
* very rare.
*/
- resv_clusters = ext4_blocks_count(EXT4_SB(sb)->s_es) >>
- EXT4_SB(sb)->s_cluster_bits;
+ resv_clusters = (ext4_blocks_count(sbi->s_es) >>
+ sbi->s_cluster_bits);
do_div(resv_clusters, 50);
resv_clusters = min_t(ext4_fsblk_t, resv_clusters, 4096);
- return resv_clusters;
-}
-
-
-static int ext4_reserve_clusters(struct ext4_sb_info *sbi, ext4_fsblk_t count)
-{
- ext4_fsblk_t clusters = ext4_blocks_count(sbi->s_es) >>
- sbi->s_cluster_bits;
-
- if (count >= clusters)
- return -EINVAL;
-
- atomic64_set(&sbi->s_resv_clusters, count);
- return 0;
+ atomic64_set(&sbi->s_resv_clusters, resv_clusters);
}
static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_kbytes_written = le64_to_cpu(es->s_kbytes_written);
/* Warn if metadata_csum and gdt_csum are both set. */
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) &&
- EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
+ if (ext4_has_feature_metadata_csum(sb) &&
+ ext4_has_feature_gdt_csum(sb))
ext4_warning(sb, "metadata_csum and uninit_bg are "
"redundant flags; please run fsck.");
}
/* Load the checksum driver */
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
+ if (ext4_has_feature_metadata_csum(sb)) {
sbi->s_chksum_driver = crypto_alloc_shash("crc32c", 0, 0);
if (IS_ERR(sbi->s_chksum_driver)) {
ext4_msg(sb, KERN_ERR, "Cannot load crc32c driver.");
ext4_msg(sb, KERN_ERR, "VFS: Found ext4 filesystem with "
"invalid superblock checksum. Run e2fsck?");
silent = 1;
+ ret = -EFSBADCRC;
goto cantfind_ext4;
}
/* Precompute checksum seed for all metadata */
- if (ext4_has_metadata_csum(sb))
+ if (ext4_has_feature_csum_seed(sb))
+ sbi->s_csum_seed = le32_to_cpu(es->s_checksum_seed);
+ else if (ext4_has_metadata_csum(sb))
sbi->s_csum_seed = ext4_chksum(sbi, ~0, es->s_uuid,
sizeof(es->s_uuid));
(test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
if (le32_to_cpu(es->s_rev_level) == EXT4_GOOD_OLD_REV &&
- (EXT4_HAS_COMPAT_FEATURE(sb, ~0U) ||
- EXT4_HAS_RO_COMPAT_FEATURE(sb, ~0U) ||
- EXT4_HAS_INCOMPAT_FEATURE(sb, ~0U)))
+ (ext4_has_compat_features(sb) ||
+ ext4_has_ro_compat_features(sb) ||
+ ext4_has_incompat_features(sb)))
ext4_msg(sb, KERN_WARNING,
"feature flags set on rev 0 fs, "
"running e2fsck is recommended");
if (es->s_creator_os == cpu_to_le32(EXT4_OS_HURD)) {
set_opt2(sb, HURD_COMPAT);
- if (EXT4_HAS_INCOMPAT_FEATURE(sb,
- EXT4_FEATURE_INCOMPAT_64BIT)) {
+ if (ext4_has_feature_64bit(sb)) {
ext4_msg(sb, KERN_ERR,
"The Hurd can't support 64-bit file systems");
goto failed_mount;
}
}
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_ENCRYPT) &&
- es->s_encryption_level) {
+ if (ext4_has_feature_encrypt(sb) && es->s_encryption_level) {
ext4_msg(sb, KERN_ERR, "Unsupported encryption level %d",
es->s_encryption_level);
goto failed_mount;
}
}
- has_huge_files = EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_HUGE_FILE);
+ has_huge_files = ext4_has_feature_huge_file(sb);
sbi->s_bitmap_maxbytes = ext4_max_bitmap_size(sb->s_blocksize_bits,
has_huge_files);
sb->s_maxbytes = ext4_max_size(sb->s_blocksize_bits, has_huge_files);
}
sbi->s_desc_size = le16_to_cpu(es->s_desc_size);
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) {
+ if (ext4_has_feature_64bit(sb)) {
if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT ||
sbi->s_desc_size > EXT4_MAX_DESC_SIZE ||
!is_power_of_2(sbi->s_desc_size)) {
for (i = 0; i < 4; i++)
sbi->s_hash_seed[i] = le32_to_cpu(es->s_hash_seed[i]);
sbi->s_def_hash_version = es->s_def_hash_version;
- if (EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_DIR_INDEX)) {
+ if (ext4_has_feature_dir_index(sb)) {
i = le32_to_cpu(es->s_flags);
if (i & EXT2_FLAGS_UNSIGNED_HASH)
sbi->s_hash_unsigned = 3;
/* Handle clustersize */
clustersize = BLOCK_SIZE << le32_to_cpu(es->s_log_cluster_size);
- has_bigalloc = EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_BIGALLOC);
+ has_bigalloc = ext4_has_feature_bigalloc(sb);
if (has_bigalloc) {
if (clustersize < blocksize) {
ext4_msg(sb, KERN_ERR,
goto failed_mount;
}
- if (ext4_proc_root)
- sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root);
-
- if (sbi->s_proc)
- proc_create_data("options", S_IRUGO, sbi->s_proc,
- &ext4_seq_options_fops, sb);
-
bgl_lock_init(sbi->s_blockgroup_lock);
for (i = 0; i < db_count; i++) {
}
if (!ext4_check_descriptors(sb, &first_not_zeroed)) {
ext4_msg(sb, KERN_ERR, "group descriptors corrupted!");
+ ret = -EFSCORRUPTED;
goto failed_mount2;
}
sb->s_xattr = ext4_xattr_handlers;
#ifdef CONFIG_QUOTA
sb->dq_op = &ext4_quota_operations;
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA))
+ if (ext4_has_feature_quota(sb))
sb->s_qcop = &dquot_quotactl_sysfile_ops;
else
sb->s_qcop = &ext4_qctl_operations;
sb->s_root = NULL;
needs_recovery = (es->s_last_orphan != 0 ||
- EXT4_HAS_INCOMPAT_FEATURE(sb,
- EXT4_FEATURE_INCOMPAT_RECOVER));
+ ext4_has_feature_journal_needs_recovery(sb));
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_MMP) &&
- !(sb->s_flags & MS_RDONLY))
+ if (ext4_has_feature_mmp(sb) && !(sb->s_flags & MS_RDONLY))
if (ext4_multi_mount_protect(sb, le64_to_cpu(es->s_mmp_block)))
goto failed_mount3a;
* The first inode we look at is the journal inode. Don't try
* root first: it may be modified in the journal!
*/
- if (!test_opt(sb, NOLOAD) &&
- EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL)) {
+ if (!test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) {
if (ext4_load_journal(sb, es, journal_devnum))
goto failed_mount3a;
} else if (test_opt(sb, NOLOAD) && !(sb->s_flags & MS_RDONLY) &&
- EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) {
+ ext4_has_feature_journal_needs_recovery(sb)) {
ext4_msg(sb, KERN_ERR, "required journal recovery "
"suppressed and not mounted read-only");
goto failed_mount_wq;
} else {
+ /* Nojournal mode, all journal mount options are illegal */
+ if (test_opt2(sb, EXPLICIT_JOURNAL_CHECKSUM)) {
+ ext4_msg(sb, KERN_ERR, "can't mount with "
+ "journal_checksum, fs mounted w/o journal");
+ goto failed_mount_wq;
+ }
+ if (test_opt(sb, JOURNAL_ASYNC_COMMIT)) {
+ ext4_msg(sb, KERN_ERR, "can't mount with "
+ "journal_async_commit, fs mounted w/o journal");
+ goto failed_mount_wq;
+ }
+ if (sbi->s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE*HZ) {
+ ext4_msg(sb, KERN_ERR, "can't mount with "
+ "commit=%lu, fs mounted w/o journal",
+ sbi->s_commit_interval / HZ);
+ goto failed_mount_wq;
+ }
+ if (EXT4_MOUNT_DATA_FLAGS &
+ (sbi->s_mount_opt ^ sbi->s_def_mount_opt)) {
+ ext4_msg(sb, KERN_ERR, "can't mount with "
+ "data=, fs mounted w/o journal");
+ goto failed_mount_wq;
+ }
+ sbi->s_def_mount_opt &= EXT4_MOUNT_JOURNAL_CHECKSUM;
+ clear_opt(sb, JOURNAL_CHECKSUM);
clear_opt(sb, DATA_FLAGS);
sbi->s_journal = NULL;
needs_recovery = 0;
goto no_journal;
}
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT) &&
+ if (ext4_has_feature_64bit(sb) &&
!jbd2_journal_set_features(EXT4_SB(sb)->s_journal, 0, 0,
JBD2_FEATURE_INCOMPAT_64BIT)) {
ext4_msg(sb, KERN_ERR, "Failed to set 64-bit journal feature");
}
}
- if ((DUMMY_ENCRYPTION_ENABLED(sbi) ||
- EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_ENCRYPT)) &&
+ if ((DUMMY_ENCRYPTION_ENABLED(sbi) || ext4_has_feature_encrypt(sb)) &&
(blocksize != PAGE_CACHE_SIZE)) {
ext4_msg(sb, KERN_ERR,
"Unsupported blocksize for fs encryption");
goto failed_mount_wq;
}
- if (DUMMY_ENCRYPTION_ENABLED(sbi) &&
- !(sb->s_flags & MS_RDONLY) &&
- !EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
- EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_ENCRYPT);
+ if (DUMMY_ENCRYPTION_ENABLED(sbi) && !(sb->s_flags & MS_RDONLY) &&
+ !ext4_has_feature_encrypt(sb)) {
+ ext4_set_feature_encrypt(sb);
ext4_commit_super(sb, 1);
}
if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) {
sbi->s_want_extra_isize = sizeof(struct ext4_inode) -
EXT4_GOOD_OLD_INODE_SIZE;
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)) {
+ if (ext4_has_feature_extra_isize(sb)) {
if (sbi->s_want_extra_isize <
le16_to_cpu(es->s_want_extra_isize))
sbi->s_want_extra_isize =
"available");
}
- err = ext4_reserve_clusters(sbi, ext4_calculate_resv_clusters(sb));
- if (err) {
- ext4_msg(sb, KERN_ERR, "failed to reserve %llu clusters for "
- "reserved pool", ext4_calculate_resv_clusters(sb));
- goto failed_mount4a;
- }
+ ext4_set_resv_clusters(sb);
err = ext4_setup_system_zone(sb);
if (err) {
goto failed_mount6;
}
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG))
+ if (ext4_has_feature_flex_bg(sb))
if (!ext4_fill_flex_info(sb)) {
ext4_msg(sb, KERN_ERR,
"unable to initialize "
if (err)
goto failed_mount6;
- sbi->s_kobj.kset = ext4_kset;
- init_completion(&sbi->s_kobj_unregister);
- err = kobject_init_and_add(&sbi->s_kobj, &ext4_ktype, NULL,
- "%s", sb->s_id);
+ err = ext4_register_sysfs(sb);
if (err)
goto failed_mount7;
#ifdef CONFIG_QUOTA
/* Enable quota usage during mount. */
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) &&
- !(sb->s_flags & MS_RDONLY)) {
+ if (ext4_has_feature_quota(sb) && !(sb->s_flags & MS_RDONLY)) {
err = ext4_enable_quotas(sb);
if (err)
goto failed_mount8;
#ifdef CONFIG_QUOTA
failed_mount8:
- kobject_del(&sbi->s_kobj);
+ ext4_unregister_sysfs(sb);
#endif
failed_mount7:
ext4_unregister_li_request(sb);
failed_mount:
if (sbi->s_chksum_driver)
crypto_free_shash(sbi->s_chksum_driver);
- if (sbi->s_proc) {
- remove_proc_entry("options", sbi->s_proc);
- remove_proc_entry(sb->s_id, ext4_proc_root);
- }
#ifdef CONFIG_QUOTA
for (i = 0; i < EXT4_MAXQUOTAS; i++)
kfree(sbi->s_qf_names[i]);
struct inode *journal_inode;
journal_t *journal;
- BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL));
+ BUG_ON(!ext4_has_feature_journal(sb));
/* First, test for the existence of a valid inode on disk. Bad
* things happen if we iget() an unused inode, as the subsequent
struct ext4_super_block *es;
struct block_device *bdev;
- BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL));
+ BUG_ON(!ext4_has_feature_journal(sb));
bdev = ext4_blkdev_get(j_dev, sb);
if (bdev == NULL)
int err = 0;
int really_read_only;
- BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL));
+ BUG_ON(!ext4_has_feature_journal(sb));
if (journal_devnum &&
journal_devnum != le32_to_cpu(es->s_journal_dev)) {
* crash? For recovery, we need to check in advance whether we
* can get read-write access to the device.
*/
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) {
+ if (ext4_has_feature_journal_needs_recovery(sb)) {
if (sb->s_flags & MS_RDONLY) {
ext4_msg(sb, KERN_INFO, "INFO: recovery "
"required on readonly filesystem");
if (!(journal->j_flags & JBD2_BARRIER))
ext4_msg(sb, KERN_INFO, "barriers disabled");
- if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER))
+ if (!ext4_has_feature_journal_needs_recovery(sb))
err = jbd2_journal_wipe(journal, !really_read_only);
if (!err) {
char *save = kmalloc(EXT4_S_ERR_LEN, GFP_KERNEL);
{
journal_t *journal = EXT4_SB(sb)->s_journal;
- if (!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL)) {
+ if (!ext4_has_feature_journal(sb)) {
BUG_ON(journal != NULL);
return;
}
if (jbd2_journal_flush(journal) < 0)
goto out;
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER) &&
+ if (ext4_has_feature_journal_needs_recovery(sb) &&
sb->s_flags & MS_RDONLY) {
- EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ ext4_clear_feature_journal_needs_recovery(sb);
ext4_commit_super(sb, 1);
}
int j_errno;
const char *errstr;
- BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL));
+ BUG_ON(!ext4_has_feature_journal(sb));
journal = EXT4_SB(sb)->s_journal;
goto out;
/* Journal blocked and flushed, clear needs_recovery flag. */
- EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ ext4_clear_feature_journal_needs_recovery(sb);
}
error = ext4_commit_super(sb, 1);
if (EXT4_SB(sb)->s_journal) {
/* Reset the needs_recovery flag before the fs is unlocked. */
- EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ ext4_set_feature_journal_needs_recovery(sb);
}
ext4_commit_super(sb, 1);
ext4_mark_recovery_complete(sb, es);
} else {
/* Make sure we can mount this feature set readwrite */
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_READONLY) ||
+ if (ext4_has_feature_readonly(sb) ||
!ext4_feature_set_ok(sb, 0)) {
err = -EROFS;
goto restore_opts;
if (!ext4_group_desc_csum_verify(sb, g, gdp)) {
ext4_msg(sb, KERN_ERR,
"ext4_remount: Checksum for group %u failed (%u!=%u)",
- g, le16_to_cpu(ext4_group_desc_csum(sbi, g, gdp)),
+ g, le16_to_cpu(ext4_group_desc_csum(sb, g, gdp)),
le16_to_cpu(gdp->bg_checksum));
- err = -EINVAL;
+ err = -EFSBADCRC;
goto restore_opts;
}
}
sbi->s_mount_state = le16_to_cpu(es->s_state);
if (!ext4_setup_super(sb, es, 0))
sb->s_flags &= ~MS_RDONLY;
- if (EXT4_HAS_INCOMPAT_FEATURE(sb,
- EXT4_FEATURE_INCOMPAT_MMP))
+ if (ext4_has_feature_mmp(sb))
if (ext4_multi_mount_protect(sb,
le64_to_cpu(es->s_mmp_block))) {
err = -EROFS;
if (enable_quota) {
if (sb_any_quota_suspended(sb))
dquot_resume(sb, -1);
- else if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
- EXT4_FEATURE_RO_COMPAT_QUOTA)) {
+ else if (ext4_has_feature_quota(sb)) {
err = ext4_enable_quotas(sb);
if (err)
goto restore_opts;
struct ext4_sb_info *sbi = EXT4_SB(sb);
/* Are we journaling quotas? */
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) ||
+ if (ext4_has_feature_quota(sb) ||
sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
dquot_mark_dquot_dirty(dquot);
return ext4_write_dquot(dquot);
le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum)
};
- BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA));
+ BUG_ON(!ext4_has_feature_quota(sb));
if (!qf_inums[type])
return -EPERM;
static inline int ext2_feature_set_ok(struct super_block *sb)
{
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, ~EXT2_FEATURE_INCOMPAT_SUPP))
+ if (ext4_has_unknown_ext2_incompat_features(sb))
return 0;
if (sb->s_flags & MS_RDONLY)
return 1;
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, ~EXT2_FEATURE_RO_COMPAT_SUPP))
+ if (ext4_has_unknown_ext2_ro_compat_features(sb))
return 0;
return 1;
}
static inline int ext3_feature_set_ok(struct super_block *sb)
{
- if (EXT4_HAS_INCOMPAT_FEATURE(sb, ~EXT3_FEATURE_INCOMPAT_SUPP))
+ if (ext4_has_unknown_ext3_incompat_features(sb))
return 0;
- if (!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL))
+ if (!ext4_has_feature_journal(sb))
return 0;
if (sb->s_flags & MS_RDONLY)
return 1;
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, ~EXT3_FEATURE_RO_COMPAT_SUPP))
+ if (ext4_has_unknown_ext3_ro_compat_features(sb))
return 0;
return 1;
}
};
MODULE_ALIAS_FS("ext4");
-static int __init ext4_init_feat_adverts(void)
-{
- struct ext4_features *ef;
- int ret = -ENOMEM;
-
- ef = kzalloc(sizeof(struct ext4_features), GFP_KERNEL);
- if (!ef)
- goto out;
-
- ef->f_kobj.kset = ext4_kset;
- init_completion(&ef->f_kobj_unregister);
- ret = kobject_init_and_add(&ef->f_kobj, &ext4_feat_ktype, NULL,
- "features");
- if (ret) {
- kfree(ef);
- goto out;
- }
-
- ext4_feat = ef;
- ret = 0;
-out:
- return ret;
-}
-
-static void ext4_exit_feat_adverts(void)
-{
- kobject_put(&ext4_feat->f_kobj);
- wait_for_completion(&ext4_feat->f_kobj_unregister);
- kfree(ext4_feat);
-}
-
/* Shared across all ext4 file systems */
wait_queue_head_t ext4__ioend_wq[EXT4_WQ_HASH_SZ];
struct mutex ext4__aio_mutex[EXT4_WQ_HASH_SZ];
err = ext4_init_pageio();
if (err)
- goto out7;
+ goto out5;
err = ext4_init_system_zone();
if (err)
- goto out6;
- ext4_kset = kset_create_and_add("ext4", NULL, fs_kobj);
- if (!ext4_kset) {
- err = -ENOMEM;
- goto out5;
- }
- ext4_proc_root = proc_mkdir("fs/ext4", NULL);
+ goto out4;
- err = ext4_init_feat_adverts();
+ err = ext4_init_sysfs();
if (err)
- goto out4;
+ goto out3;
err = ext4_init_mballoc();
if (err)
ext4_mballoc_ready = 0;
ext4_exit_mballoc();
out2:
- ext4_exit_feat_adverts();
-out4:
- if (ext4_proc_root)
- remove_proc_entry("fs/ext4", NULL);
- kset_unregister(ext4_kset);
-out5:
+ ext4_exit_sysfs();
+out3:
ext4_exit_system_zone();
-out6:
+out4:
ext4_exit_pageio();
-out7:
+out5:
ext4_exit_es();
return err;
unregister_filesystem(&ext4_fs_type);
destroy_inodecache();
ext4_exit_mballoc();
- ext4_exit_feat_adverts();
- remove_proc_entry("fs/ext4", NULL);
- kset_unregister(ext4_kset);
+ ext4_exit_sysfs();
ext4_exit_system_zone();
ext4_exit_pageio();
ext4_exit_es();
sizeof(struct ext4_encrypted_symlink_data) - 1) >
max_size) {
/* Symlink data on the disk is corrupted */
- res = -EIO;
+ res = -EFSCORRUPTED;
goto errout;
}
plen = (cstr.len < EXT4_FNAME_CRYPTO_DIGEST_SIZE*2) ?
--- /dev/null
+/*
+ * linux/fs/ext4/sysfs.c
+ *
+ * Copyright (C) 1992, 1993, 1994, 1995
+ * Remy Card (card@masi.ibp.fr)
+ * Theodore Ts'o (tytso@mit.edu)
+ *
+ */
+
+#include <linux/time.h>
+#include <linux/fs.h>
+#include <linux/seq_file.h>
+#include <linux/proc_fs.h>
+
+#include "ext4.h"
+#include "ext4_jbd2.h"
+
+typedef enum {
+ attr_noop,
+ attr_delayed_allocation_blocks,
+ attr_session_write_kbytes,
+ attr_lifetime_write_kbytes,
+ attr_reserved_clusters,
+ attr_inode_readahead,
+ attr_trigger_test_error,
+ attr_feature,
+ attr_pointer_ui,
+ attr_pointer_atomic,
+} attr_id_t;
+
+typedef enum {
+ ptr_explicit,
+ ptr_ext4_sb_info_offset,
+ ptr_ext4_super_block_offset,
+} attr_ptr_t;
+
+static const char *proc_dirname = "fs/ext4";
+static struct proc_dir_entry *ext4_proc_root;
+
+struct ext4_attr {
+ struct attribute attr;
+ short attr_id;
+ short attr_ptr;
+ union {
+ int offset;
+ void *explicit_ptr;
+ } u;
+};
+
+static ssize_t session_write_kbytes_show(struct ext4_attr *a,
+ struct ext4_sb_info *sbi, char *buf)
+{
+ struct super_block *sb = sbi->s_buddy_cache->i_sb;
+
+ if (!sb->s_bdev->bd_part)
+ return snprintf(buf, PAGE_SIZE, "0\n");
+ return snprintf(buf, PAGE_SIZE, "%lu\n",
+ (part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ sbi->s_sectors_written_start) >> 1);
+}
+
+static ssize_t lifetime_write_kbytes_show(struct ext4_attr *a,
+ struct ext4_sb_info *sbi, char *buf)
+{
+ struct super_block *sb = sbi->s_buddy_cache->i_sb;
+
+ if (!sb->s_bdev->bd_part)
+ return snprintf(buf, PAGE_SIZE, "0\n");
+ return snprintf(buf, PAGE_SIZE, "%llu\n",
+ (unsigned long long)(sbi->s_kbytes_written +
+ ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ EXT4_SB(sb)->s_sectors_written_start) >> 1)));
+}
+
+static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
+ struct ext4_sb_info *sbi,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int ret;
+
+ ret = kstrtoul(skip_spaces(buf), 0, &t);
+ if (ret)
+ return ret;
+
+ if (t && (!is_power_of_2(t) || t > 0x40000000))
+ return -EINVAL;
+
+ sbi->s_inode_readahead_blks = t;
+ return count;
+}
+
+static ssize_t reserved_clusters_store(struct ext4_attr *a,
+ struct ext4_sb_info *sbi,
+ const char *buf, size_t count)
+{
+ unsigned long long val;
+ ext4_fsblk_t clusters = (ext4_blocks_count(sbi->s_es) >>
+ sbi->s_cluster_bits);
+ int ret;
+
+ ret = kstrtoull(skip_spaces(buf), 0, &val);
+ if (!ret || val >= clusters)
+ return -EINVAL;
+
+ atomic64_set(&sbi->s_resv_clusters, val);
+ return count;
+}
+
+static ssize_t trigger_test_error(struct ext4_attr *a,
+ struct ext4_sb_info *sbi,
+ const char *buf, size_t count)
+{
+ int len = count;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (len && buf[len-1] == '\n')
+ len--;
+
+ if (len)
+ ext4_error(sbi->s_sb, "%.*s", len, buf);
+ return count;
+}
+
+#define EXT4_ATTR(_name,_mode,_id) \
+static struct ext4_attr ext4_attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .attr_id = attr_##_id, \
+}
+
+#define EXT4_ATTR_FUNC(_name,_mode) EXT4_ATTR(_name,_mode,_name)
+
+#define EXT4_ATTR_FEATURE(_name) EXT4_ATTR(_name, 0444, feature)
+
+#define EXT4_ATTR_OFFSET(_name,_mode,_id,_struct,_elname) \
+static struct ext4_attr ext4_attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .attr_id = attr_##_id, \
+ .attr_ptr = ptr_##_struct##_offset, \
+ .u = { \
+ .offset = offsetof(struct _struct, _elname),\
+ }, \
+}
+
+#define EXT4_RO_ATTR_ES_UI(_name,_elname) \
+ EXT4_ATTR_OFFSET(_name, 0444, pointer_ui, ext4_super_block, _elname)
+
+#define EXT4_RW_ATTR_SBI_UI(_name,_elname) \
+ EXT4_ATTR_OFFSET(_name, 0644, pointer_ui, ext4_sb_info, _elname)
+
+#define EXT4_ATTR_PTR(_name,_mode,_id,_ptr) \
+static struct ext4_attr ext4_attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .attr_id = attr_##_id, \
+ .attr_ptr = ptr_explicit, \
+ .u = { \
+ .explicit_ptr = _ptr, \
+ }, \
+}
+
+#define ATTR_LIST(name) &ext4_attr_##name.attr
+
+EXT4_ATTR_FUNC(delayed_allocation_blocks, 0444);
+EXT4_ATTR_FUNC(session_write_kbytes, 0444);
+EXT4_ATTR_FUNC(lifetime_write_kbytes, 0444);
+EXT4_ATTR_FUNC(reserved_clusters, 0644);
+
+EXT4_ATTR_OFFSET(inode_readahead_blks, 0644, inode_readahead,
+ ext4_sb_info, s_inode_readahead_blks);
+EXT4_RW_ATTR_SBI_UI(inode_goal, s_inode_goal);
+EXT4_RW_ATTR_SBI_UI(mb_stats, s_mb_stats);
+EXT4_RW_ATTR_SBI_UI(mb_max_to_scan, s_mb_max_to_scan);
+EXT4_RW_ATTR_SBI_UI(mb_min_to_scan, s_mb_min_to_scan);
+EXT4_RW_ATTR_SBI_UI(mb_order2_req, s_mb_order2_reqs);
+EXT4_RW_ATTR_SBI_UI(mb_stream_req, s_mb_stream_request);
+EXT4_RW_ATTR_SBI_UI(mb_group_prealloc, s_mb_group_prealloc);
+EXT4_RW_ATTR_SBI_UI(extent_max_zeroout_kb, s_extent_max_zeroout_kb);
+EXT4_ATTR(trigger_fs_error, 0200, trigger_test_error);
+EXT4_RW_ATTR_SBI_UI(err_ratelimit_interval_ms, s_err_ratelimit_state.interval);
+EXT4_RW_ATTR_SBI_UI(err_ratelimit_burst, s_err_ratelimit_state.burst);
+EXT4_RW_ATTR_SBI_UI(warning_ratelimit_interval_ms, s_warning_ratelimit_state.interval);
+EXT4_RW_ATTR_SBI_UI(warning_ratelimit_burst, s_warning_ratelimit_state.burst);
+EXT4_RW_ATTR_SBI_UI(msg_ratelimit_interval_ms, s_msg_ratelimit_state.interval);
+EXT4_RW_ATTR_SBI_UI(msg_ratelimit_burst, s_msg_ratelimit_state.burst);
+EXT4_RO_ATTR_ES_UI(errors_count, s_error_count);
+EXT4_RO_ATTR_ES_UI(first_error_time, s_first_error_time);
+EXT4_RO_ATTR_ES_UI(last_error_time, s_last_error_time);
+
+static unsigned int old_bump_val = 128;
+EXT4_ATTR_PTR(max_writeback_mb_bump, 0444, pointer_ui, &old_bump_val);
+
+static struct attribute *ext4_attrs[] = {
+ ATTR_LIST(delayed_allocation_blocks),
+ ATTR_LIST(session_write_kbytes),
+ ATTR_LIST(lifetime_write_kbytes),
+ ATTR_LIST(reserved_clusters),
+ ATTR_LIST(inode_readahead_blks),
+ ATTR_LIST(inode_goal),
+ ATTR_LIST(mb_stats),
+ ATTR_LIST(mb_max_to_scan),
+ ATTR_LIST(mb_min_to_scan),
+ ATTR_LIST(mb_order2_req),
+ ATTR_LIST(mb_stream_req),
+ ATTR_LIST(mb_group_prealloc),
+ ATTR_LIST(max_writeback_mb_bump),
+ ATTR_LIST(extent_max_zeroout_kb),
+ ATTR_LIST(trigger_fs_error),
+ ATTR_LIST(err_ratelimit_interval_ms),
+ ATTR_LIST(err_ratelimit_burst),
+ ATTR_LIST(warning_ratelimit_interval_ms),
+ ATTR_LIST(warning_ratelimit_burst),
+ ATTR_LIST(msg_ratelimit_interval_ms),
+ ATTR_LIST(msg_ratelimit_burst),
+ ATTR_LIST(errors_count),
+ ATTR_LIST(first_error_time),
+ ATTR_LIST(last_error_time),
+ NULL,
+};
+
+/* Features this copy of ext4 supports */
+EXT4_ATTR_FEATURE(lazy_itable_init);
+EXT4_ATTR_FEATURE(batched_discard);
+EXT4_ATTR_FEATURE(meta_bg_resize);
+EXT4_ATTR_FEATURE(encryption);
+EXT4_ATTR_FEATURE(metadata_csum_seed);
+
+static struct attribute *ext4_feat_attrs[] = {
+ ATTR_LIST(lazy_itable_init),
+ ATTR_LIST(batched_discard),
+ ATTR_LIST(meta_bg_resize),
+ ATTR_LIST(encryption),
+ ATTR_LIST(metadata_csum_seed),
+ NULL,
+};
+
+static void *calc_ptr(struct ext4_attr *a, struct ext4_sb_info *sbi)
+{
+ switch (a->attr_ptr) {
+ case ptr_explicit:
+ return a->u.explicit_ptr;
+ case ptr_ext4_sb_info_offset:
+ return (void *) (((char *) sbi) + a->u.offset);
+ case ptr_ext4_super_block_offset:
+ return (void *) (((char *) sbi->s_es) + a->u.offset);
+ }
+ return NULL;
+}
+
+static ssize_t ext4_attr_show(struct kobject *kobj,
+ struct attribute *attr, char *buf)
+{
+ struct ext4_sb_info *sbi = container_of(kobj, struct ext4_sb_info,
+ s_kobj);
+ struct ext4_attr *a = container_of(attr, struct ext4_attr, attr);
+ void *ptr = calc_ptr(a, sbi);
+
+ switch (a->attr_id) {
+ case attr_delayed_allocation_blocks:
+ return snprintf(buf, PAGE_SIZE, "%llu\n",
+ (s64) EXT4_C2B(sbi,
+ percpu_counter_sum(&sbi->s_dirtyclusters_counter)));
+ case attr_session_write_kbytes:
+ return session_write_kbytes_show(a, sbi, buf);
+ case attr_lifetime_write_kbytes:
+ return lifetime_write_kbytes_show(a, sbi, buf);
+ case attr_reserved_clusters:
+ return snprintf(buf, PAGE_SIZE, "%llu\n",
+ (unsigned long long)
+ atomic64_read(&sbi->s_resv_clusters));
+ case attr_inode_readahead:
+ case attr_pointer_ui:
+ if (!ptr)
+ return 0;
+ return snprintf(buf, PAGE_SIZE, "%u\n",
+ *((unsigned int *) ptr));
+ case attr_pointer_atomic:
+ if (!ptr)
+ return 0;
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ atomic_read((atomic_t *) ptr));
+ case attr_feature:
+ return snprintf(buf, PAGE_SIZE, "supported\n");
+ }
+
+ return 0;
+}
+
+static ssize_t ext4_attr_store(struct kobject *kobj,
+ struct attribute *attr,
+ const char *buf, size_t len)
+{
+ struct ext4_sb_info *sbi = container_of(kobj, struct ext4_sb_info,
+ s_kobj);
+ struct ext4_attr *a = container_of(attr, struct ext4_attr, attr);
+ void *ptr = calc_ptr(a, sbi);
+ unsigned long t;
+ int ret;
+
+ switch (a->attr_id) {
+ case attr_reserved_clusters:
+ return reserved_clusters_store(a, sbi, buf, len);
+ case attr_pointer_ui:
+ if (!ptr)
+ return 0;
+ ret = kstrtoul(skip_spaces(buf), 0, &t);
+ if (ret)
+ return ret;
+ *((unsigned int *) ptr) = t;
+ return len;
+ case attr_inode_readahead:
+ return inode_readahead_blks_store(a, sbi, buf, len);
+ case attr_trigger_test_error:
+ return trigger_test_error(a, sbi, buf, len);
+ }
+ return 0;
+}
+
+static void ext4_sb_release(struct kobject *kobj)
+{
+ struct ext4_sb_info *sbi = container_of(kobj, struct ext4_sb_info,
+ s_kobj);
+ complete(&sbi->s_kobj_unregister);
+}
+
+static const struct sysfs_ops ext4_attr_ops = {
+ .show = ext4_attr_show,
+ .store = ext4_attr_store,
+};
+
+static struct kobj_type ext4_sb_ktype = {
+ .default_attrs = ext4_attrs,
+ .sysfs_ops = &ext4_attr_ops,
+ .release = ext4_sb_release,
+};
+
+static struct kobj_type ext4_ktype = {
+ .sysfs_ops = &ext4_attr_ops,
+};
+
+static struct kset ext4_kset = {
+ .kobj = {.ktype = &ext4_ktype},
+};
+
+static struct kobj_type ext4_feat_ktype = {
+ .default_attrs = ext4_feat_attrs,
+ .sysfs_ops = &ext4_attr_ops,
+};
+
+static struct kobject ext4_feat = {
+ .kset = &ext4_kset,
+};
+
+#define PROC_FILE_SHOW_DEFN(name) \
+static int name##_open(struct inode *inode, struct file *file) \
+{ \
+ return single_open(file, ext4_seq_##name##_show, PDE_DATA(inode)); \
+} \
+\
+const struct file_operations ext4_seq_##name##_fops = { \
+ .owner = THIS_MODULE, \
+ .open = name##_open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+}
+
+#define PROC_FILE_LIST(name) \
+ { __stringify(name), &ext4_seq_##name##_fops }
+
+PROC_FILE_SHOW_DEFN(es_shrinker_info);
+PROC_FILE_SHOW_DEFN(options);
+
+static struct ext4_proc_files {
+ const char *name;
+ const struct file_operations *fops;
+} proc_files[] = {
+ PROC_FILE_LIST(options),
+ PROC_FILE_LIST(es_shrinker_info),
+ PROC_FILE_LIST(mb_groups),
+ { NULL, NULL },
+};
+
+int ext4_register_sysfs(struct super_block *sb)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_proc_files *p;
+ int err;
+
+ sbi->s_kobj.kset = &ext4_kset;
+ init_completion(&sbi->s_kobj_unregister);
+ err = kobject_init_and_add(&sbi->s_kobj, &ext4_sb_ktype, NULL,
+ "%s", sb->s_id);
+ if (err)
+ return err;
+
+ if (ext4_proc_root)
+ sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root);
+
+ if (sbi->s_proc) {
+ for (p = proc_files; p->name; p++)
+ proc_create_data(p->name, S_IRUGO, sbi->s_proc,
+ p->fops, sb);
+ }
+ return 0;
+}
+
+void ext4_unregister_sysfs(struct super_block *sb)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_proc_files *p;
+
+ if (sbi->s_proc) {
+ for (p = proc_files; p->name; p++)
+ remove_proc_entry(p->name, sbi->s_proc);
+ remove_proc_entry(sb->s_id, ext4_proc_root);
+ }
+ kobject_del(&sbi->s_kobj);
+}
+
+int __init ext4_init_sysfs(void)
+{
+ int ret;
+
+ kobject_set_name(&ext4_kset.kobj, "ext4");
+ ext4_kset.kobj.parent = fs_kobj;
+ ret = kset_register(&ext4_kset);
+ if (ret)
+ return ret;
+
+ ret = kobject_init_and_add(&ext4_feat, &ext4_feat_ktype,
+ NULL, "features");
+ if (ret)
+ kset_unregister(&ext4_kset);
+ else
+ ext4_proc_root = proc_mkdir(proc_dirname, NULL);
+ return ret;
+}
+
+void ext4_exit_sysfs(void)
+{
+ kobject_put(&ext4_feat);
+ kset_unregister(&ext4_kset);
+ remove_proc_entry(proc_dirname, NULL);
+ ext4_proc_root = NULL;
+}
+
while (!IS_LAST_ENTRY(e)) {
struct ext4_xattr_entry *next = EXT4_XATTR_NEXT(e);
if ((void *)next >= end)
- return -EIO;
+ return -EFSCORRUPTED;
e = next;
}
(void *)e + sizeof(__u32) ||
value_start + le16_to_cpu(entry->e_value_offs) +
le32_to_cpu(entry->e_value_size) > end))
- return -EIO;
+ return -EFSCORRUPTED;
entry = EXT4_XATTR_NEXT(entry);
}
if (BHDR(bh)->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC) ||
BHDR(bh)->h_blocks != cpu_to_le32(1))
- return -EIO;
+ return -EFSCORRUPTED;
if (!ext4_xattr_block_csum_verify(inode, bh->b_blocknr, BHDR(bh)))
- return -EIO;
+ return -EFSBADCRC;
error = ext4_xattr_check_names(BFIRST(bh), bh->b_data + bh->b_size,
bh->b_data);
if (!error)
if (entry->e_value_block != 0 || value_size > size ||
le16_to_cpu(entry->e_value_offs) + value_size > size)
- return -EIO;
+ return -EFSCORRUPTED;
return 0;
}
}
*pentry = entry;
if (!cmp && ext4_xattr_check_entry(entry, size))
- return -EIO;
+ return -EFSCORRUPTED;
return cmp ? -ENODATA : 0;
}
bad_block:
EXT4_ERROR_INODE(inode, "bad block %llu",
EXT4_I(inode)->i_file_acl);
- error = -EIO;
+ error = -EFSCORRUPTED;
goto cleanup;
}
ext4_xattr_cache_insert(ext4_mb_cache, bh);
entry = BFIRST(bh);
error = ext4_xattr_find_entry(&entry, name_index, name, bh->b_size, 1);
- if (error == -EIO)
+ if (error == -EFSCORRUPTED)
goto bad_block;
if (error)
goto cleanup;
if (ext4_xattr_check_block(inode, bh)) {
EXT4_ERROR_INODE(inode, "bad block %llu",
EXT4_I(inode)->i_file_acl);
- error = -EIO;
+ error = -EFSCORRUPTED;
goto cleanup;
}
ext4_xattr_cache_insert(ext4_mb_cache, bh);
static void ext4_xattr_update_super_block(handle_t *handle,
struct super_block *sb)
{
- if (EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_EXT_ATTR))
+ if (ext4_has_feature_xattr(sb))
return;
BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access");
if (ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh) == 0) {
- EXT4_SET_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_EXT_ATTR);
+ ext4_set_feature_xattr(sb);
ext4_handle_dirty_super(handle, sb);
}
}
if (ext4_xattr_check_block(inode, bs->bh)) {
EXT4_ERROR_INODE(inode, "bad block %llu",
EXT4_I(inode)->i_file_acl);
- error = -EIO;
+ error = -EFSCORRUPTED;
goto cleanup;
}
/* Find the named attribute. */
bs->bh);
}
unlock_buffer(bs->bh);
- if (error == -EIO)
+ if (error == -EFSCORRUPTED)
goto bad_block;
if (!error)
error = ext4_handle_dirty_xattr_block(handle,
}
error = ext4_xattr_set_entry(i, s);
- if (error == -EIO)
+ if (error == -EFSCORRUPTED)
goto bad_block;
if (error)
goto cleanup;
if (ext4_xattr_check_block(inode, bh)) {
EXT4_ERROR_INODE(inode, "bad block %llu",
EXT4_I(inode)->i_file_acl);
- error = -EIO;
+ error = -EFSCORRUPTED;
goto cleanup;
}
base = BHDR(bh);
memcmp(entry1->e_name, entry2->e_name, entry1->e_name_len))
return 1;
if (entry1->e_value_block != 0 || entry2->e_value_block != 0)
- return -EIO;
+ return -EFSCORRUPTED;
if (memcmp((char *)header1 + le16_to_cpu(entry1->e_value_offs),
(char *)header2 + le16_to_cpu(entry2->e_value_offs),
le32_to_cpu(entry1->e_value_size)))
struct journal_head *last_jh;
struct journal_head *next_jh = jh;
int ret;
- int freed = 0;
if (!jh)
return 0;
else
ret = __jbd2_journal_remove_checkpoint(jh) + 1;
if (!ret)
- return freed;
+ return 0;
if (ret == 2)
return 1;
- freed = 1;
/*
* This function only frees up some memory
* if possible so we dont have an obligation
* requested:
*/
if (need_resched())
- return freed;
+ return 0;
} while (jh != last_jh);
- return freed;
+ return 0;
}
/*
tmp->h_commit_sec = cpu_to_be64(now.tv_sec);
tmp->h_commit_nsec = cpu_to_be32(now.tv_nsec);
- if (JBD2_HAS_COMPAT_FEATURE(journal,
- JBD2_FEATURE_COMPAT_CHECKSUM)) {
+ if (jbd2_has_feature_checksum(journal)) {
tmp->h_chksum_type = JBD2_CRC32_CHKSUM;
tmp->h_chksum_size = JBD2_CRC32_CHKSUM_SIZE;
tmp->h_chksum[0] = cpu_to_be32(crc32_sum);
bh->b_end_io = journal_end_buffer_io_sync;
if (journal->j_flags & JBD2_BARRIER &&
- !JBD2_HAS_INCOMPAT_FEATURE(journal,
- JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT))
+ !jbd2_has_feature_async_commit(journal))
ret = submit_bh(WRITE_SYNC | WRITE_FLUSH_FUA, bh);
else
ret = submit_bh(WRITE_SYNC, bh);
unsigned long long block)
{
tag->t_blocknr = cpu_to_be32(block & (u32)~0);
- if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_64BIT))
+ if (jbd2_has_feature_64bit(j))
tag->t_blocknr_high = cpu_to_be32((block >> 31) >> 1);
}
bh->b_size);
kunmap_atomic(addr);
- if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V3))
+ if (jbd2_has_feature_csum3(j))
tag3->t_checksum = cpu_to_be32(csum32);
else
tag->t_checksum = cpu_to_be16(csum32);
/*
* Compute checksum.
*/
- if (JBD2_HAS_COMPAT_FEATURE(journal,
- JBD2_FEATURE_COMPAT_CHECKSUM)) {
+ if (jbd2_has_feature_checksum(journal)) {
crc32_sum =
jbd2_checksum_data(crc32_sum, bh);
}
blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS, NULL);
/* Done it all: now write the commit record asynchronously. */
- if (JBD2_HAS_INCOMPAT_FEATURE(journal,
- JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)) {
+ if (jbd2_has_feature_async_commit(journal)) {
err = journal_submit_commit_record(journal, commit_transaction,
&cbh, crc32_sum);
if (err)
commit_transaction->t_state = T_COMMIT_JFLUSH;
write_unlock(&journal->j_state_lock);
- if (!JBD2_HAS_INCOMPAT_FEATURE(journal,
- JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)) {
+ if (!jbd2_has_feature_async_commit(journal)) {
err = journal_submit_commit_record(journal, commit_transaction,
&cbh, crc32_sum);
if (err)
}
if (cbh)
err = journal_wait_on_commit_record(journal, cbh);
- if (JBD2_HAS_INCOMPAT_FEATURE(journal,
- JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT) &&
+ if (jbd2_has_feature_async_commit(journal) &&
journal->j_flags & JBD2_BARRIER) {
blkdev_issue_flush(journal->j_dev, GFP_NOFS, NULL);
}
/* Checksumming functions */
static int jbd2_verify_csum_type(journal_t *j, journal_superblock_t *sb)
{
- if (!jbd2_journal_has_csum_v2or3(j))
+ if (!jbd2_journal_has_csum_v2or3_feature(j))
return 1;
return sb->s_checksum_type == JBD2_CRC32C_CHKSUM;
goto out;
}
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2) &&
- JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3)) {
+ if (jbd2_has_feature_csum2(journal) &&
+ jbd2_has_feature_csum3(journal)) {
/* Can't have checksum v2 and v3 at the same time! */
printk(KERN_ERR "JBD2: Can't enable checksumming v2 and v3 "
"at the same time!\n");
goto out;
}
- if (jbd2_journal_has_csum_v2or3(journal) &&
- JBD2_HAS_COMPAT_FEATURE(journal, JBD2_FEATURE_COMPAT_CHECKSUM)) {
+ if (jbd2_journal_has_csum_v2or3_feature(journal) &&
+ jbd2_has_feature_checksum(journal)) {
/* Can't have checksum v1 and v2 on at the same time! */
printk(KERN_ERR "JBD2: Can't enable checksumming v1 and v2/3 "
"at the same time!\n");
}
/* Load the checksum driver */
- if (jbd2_journal_has_csum_v2or3(journal)) {
+ if (jbd2_journal_has_csum_v2or3_feature(journal)) {
journal->j_chksum_driver = crypto_alloc_shash("crc32c", 0, 0);
if (IS_ERR(journal->j_chksum_driver)) {
printk(KERN_ERR "JBD2: Cannot load crc32c driver.\n");
/* Check superblock checksum */
if (!jbd2_superblock_csum_verify(journal, sb)) {
printk(KERN_ERR "JBD2: journal checksum error\n");
+ err = -EFSBADCRC;
goto out;
}
printk(KERN_ERR "JBD2: journal transaction %u on %s "
"is corrupt.\n", journal->j_failed_commit,
journal->j_devname);
- return -EIO;
+ return -EFSCORRUPTED;
}
/* OK, we've finished with the dynamic journal bits:
__jbd2_journal_abort_hard(journal);
- if (errno)
+ if (errno) {
jbd2_journal_update_sb_errno(journal);
+ write_lock(&journal->j_state_lock);
+ journal->j_flags |= JBD2_REC_ERR;
+ write_unlock(&journal->j_state_lock);
+ }
}
/**
{
size_t sz;
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3))
+ if (jbd2_has_feature_csum3(journal))
return sizeof(journal_block_tag3_t);
sz = sizeof(journal_block_tag_t);
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2))
+ if (jbd2_has_feature_csum2(journal))
sz += sizeof(__u16);
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT))
+ if (jbd2_has_feature_64bit(journal))
return sz;
else
return sz - sizeof(__u32);
if (offset >= journal->j_maxlen) {
printk(KERN_ERR "JBD2: corrupted journal superblock\n");
- return -EIO;
+ return -EFSCORRUPTED;
}
err = jbd2_journal_bmap(journal, offset, &blocknr);
journal_block_tag_t *tag)
{
unsigned long long block = be32_to_cpu(tag->t_blocknr);
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT))
+ if (jbd2_has_feature_64bit(journal))
block |= (u64)be32_to_cpu(tag->t_blocknr_high) << 32;
return block;
}
csum32 = jbd2_chksum(j, j->j_csum_seed, (__u8 *)&seq, sizeof(seq));
csum32 = jbd2_chksum(j, csum32, buf, j->j_blocksize);
- if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V3))
+ if (jbd2_has_feature_csum3(j))
return tag3->t_checksum == cpu_to_be32(csum32);
else
return tag->t_checksum == cpu_to_be16(csum32);
printk(KERN_ERR "JBD2: Invalid checksum "
"recovering block %lu in log\n",
next_log_block);
- err = -EIO;
+ err = -EFSBADCRC;
brelse(bh);
goto failed;
}
* just skip over the blocks it describes. */
if (pass != PASS_REPLAY) {
if (pass == PASS_SCAN &&
- JBD2_HAS_COMPAT_FEATURE(journal,
- JBD2_FEATURE_COMPAT_CHECKSUM) &&
+ jbd2_has_feature_checksum(journal) &&
!info->end_transaction) {
if (calc_chksums(journal, bh,
&next_log_block,
journal, tag, obh->b_data,
be32_to_cpu(tmp->h_sequence))) {
brelse(obh);
- success = -EIO;
+ success = -EFSBADCRC;
printk(KERN_ERR "JBD2: Invalid "
"checksum recovering "
"block %llu in log\n",
* much to do other than move on to the next sequence
* number. */
if (pass == PASS_SCAN &&
- JBD2_HAS_COMPAT_FEATURE(journal,
- JBD2_FEATURE_COMPAT_CHECKSUM)) {
+ jbd2_has_feature_checksum(journal)) {
int chksum_err, chksum_seen;
struct commit_header *cbh =
(struct commit_header *)bh->b_data;
if (chksum_err) {
info->end_transaction = next_commit_ID;
- if (!JBD2_HAS_INCOMPAT_FEATURE(journal,
- JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)){
+ if (!jbd2_has_feature_async_commit(journal)) {
journal->j_failed_commit =
next_commit_ID;
brelse(bh);
bh->b_data)) {
info->end_transaction = next_commit_ID;
- if (!JBD2_HAS_INCOMPAT_FEATURE(journal,
- JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)) {
+ if (!jbd2_has_feature_async_commit(journal)) {
journal->j_failed_commit =
next_commit_ID;
brelse(bh);
rcount = be32_to_cpu(header->r_count);
if (!jbd2_revoke_block_csum_verify(journal, header))
- return -EINVAL;
+ return -EFSBADCRC;
if (jbd2_journal_has_csum_v2or3(journal))
csum_size = sizeof(struct jbd2_journal_revoke_tail);
return -EINVAL;
max = rcount;
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT))
+ if (jbd2_has_feature_64bit(journal))
record_len = 8;
while (offset + record_len <= max) {
if (jbd2_journal_has_csum_v2or3(journal))
csum_size = sizeof(struct jbd2_journal_revoke_tail);
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT))
+ if (jbd2_has_feature_64bit(journal))
sz = 8;
else
sz = 4;
*descriptorp = descriptor;
}
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT))
+ if (jbd2_has_feature_64bit(journal))
* ((__be64 *)(&descriptor->b_data[offset])) =
cpu_to_be64(record->blocknr);
else
/* 0x0400 */
} journal_superblock_t;
+/* Use the jbd2_{has,set,clear}_feature_* helpers; these will be removed */
#define JBD2_HAS_COMPAT_FEATURE(j,mask) \
((j)->j_format_version >= 2 && \
((j)->j_superblock->s_feature_compat & cpu_to_be32((mask))))
((j)->j_format_version >= 2 && \
((j)->j_superblock->s_feature_incompat & cpu_to_be32((mask))))
-#define JBD2_FEATURE_COMPAT_CHECKSUM 0x00000001
+#define JBD2_FEATURE_COMPAT_CHECKSUM 0x00000001
#define JBD2_FEATURE_INCOMPAT_REVOKE 0x00000001
#define JBD2_FEATURE_INCOMPAT_64BIT 0x00000002
#define JBD2_FEATURE_INCOMPAT_CSUM_V2 0x00000008
#define JBD2_FEATURE_INCOMPAT_CSUM_V3 0x00000010
+/* See "journal feature predicate functions" below */
+
/* Features known to this kernel version: */
#define JBD2_KNOWN_COMPAT_FEATURES JBD2_FEATURE_COMPAT_CHECKSUM
#define JBD2_KNOWN_ROCOMPAT_FEATURES 0
__u32 j_csum_seed;
};
+/* journal feature predicate functions */
+#define JBD2_FEATURE_COMPAT_FUNCS(name, flagname) \
+static inline bool jbd2_has_feature_##name(journal_t *j) \
+{ \
+ return ((j)->j_format_version >= 2 && \
+ ((j)->j_superblock->s_feature_compat & \
+ cpu_to_be32(JBD2_FEATURE_COMPAT_##flagname)) != 0); \
+} \
+static inline void jbd2_set_feature_##name(journal_t *j) \
+{ \
+ (j)->j_superblock->s_feature_compat |= \
+ cpu_to_be32(JBD2_FEATURE_COMPAT_##flagname); \
+} \
+static inline void jbd2_clear_feature_##name(journal_t *j) \
+{ \
+ (j)->j_superblock->s_feature_compat &= \
+ ~cpu_to_be32(JBD2_FEATURE_COMPAT_##flagname); \
+}
+
+#define JBD2_FEATURE_RO_COMPAT_FUNCS(name, flagname) \
+static inline bool jbd2_has_feature_##name(journal_t *j) \
+{ \
+ return ((j)->j_format_version >= 2 && \
+ ((j)->j_superblock->s_feature_ro_compat & \
+ cpu_to_be32(JBD2_FEATURE_RO_COMPAT_##flagname)) != 0); \
+} \
+static inline void jbd2_set_feature_##name(journal_t *j) \
+{ \
+ (j)->j_superblock->s_feature_ro_compat |= \
+ cpu_to_be32(JBD2_FEATURE_RO_COMPAT_##flagname); \
+} \
+static inline void jbd2_clear_feature_##name(journal_t *j) \
+{ \
+ (j)->j_superblock->s_feature_ro_compat &= \
+ ~cpu_to_be32(JBD2_FEATURE_RO_COMPAT_##flagname); \
+}
+
+#define JBD2_FEATURE_INCOMPAT_FUNCS(name, flagname) \
+static inline bool jbd2_has_feature_##name(journal_t *j) \
+{ \
+ return ((j)->j_format_version >= 2 && \
+ ((j)->j_superblock->s_feature_incompat & \
+ cpu_to_be32(JBD2_FEATURE_INCOMPAT_##flagname)) != 0); \
+} \
+static inline void jbd2_set_feature_##name(journal_t *j) \
+{ \
+ (j)->j_superblock->s_feature_incompat |= \
+ cpu_to_be32(JBD2_FEATURE_INCOMPAT_##flagname); \
+} \
+static inline void jbd2_clear_feature_##name(journal_t *j) \
+{ \
+ (j)->j_superblock->s_feature_incompat &= \
+ ~cpu_to_be32(JBD2_FEATURE_INCOMPAT_##flagname); \
+}
+
+JBD2_FEATURE_COMPAT_FUNCS(checksum, CHECKSUM)
+
+JBD2_FEATURE_INCOMPAT_FUNCS(revoke, REVOKE)
+JBD2_FEATURE_INCOMPAT_FUNCS(64bit, 64BIT)
+JBD2_FEATURE_INCOMPAT_FUNCS(async_commit, ASYNC_COMMIT)
+JBD2_FEATURE_INCOMPAT_FUNCS(csum2, CSUM_V2)
+JBD2_FEATURE_INCOMPAT_FUNCS(csum3, CSUM_V3)
+
/*
* Journal flag definitions
*/
#define JBD2_ABORT_ON_SYNCDATA_ERR 0x040 /* Abort the journal on file
* data write error in ordered
* mode */
+#define JBD2_REC_ERR 0x080 /* The errno in the sb has been recorded */
/*
* Function declarations for the journaling transaction and buffer
extern int jbd2_journal_blocks_per_page(struct inode *inode);
extern size_t journal_tag_bytes(journal_t *journal);
+static inline bool jbd2_journal_has_csum_v2or3_feature(journal_t *j)
+{
+ return jbd2_has_feature_csum2(j) || jbd2_has_feature_csum3(j);
+}
+
static inline int jbd2_journal_has_csum_v2or3(journal_t *journal)
{
- if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2) ||
- JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3))
- return 1;
+ WARN_ON_ONCE(jbd2_journal_has_csum_v2or3_feature(journal) &&
+ journal->j_chksum_driver == NULL);
- return 0;
+ return journal->j_chksum_driver != NULL;
}
/*
#endif /* __KERNEL__ */
+#define EFSBADCRC EBADMSG /* Bad CRC detected */
+#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
+
#endif /* _LINUX_JBD2_H */
#define FS_EXTENT_FL 0x00080000 /* Extents */
#define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */
#define FS_NOCOW_FL 0x00800000 /* Do not cow file */
+#define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
#define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
#define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
projects / cascardo / linux.git / commitdiff