diff options
-rw-r--r-- | fs/bcachefs/bcachefs_format.h | 3 | ||||
-rw-r--r-- | fs/bcachefs/fsck.c | 10 | ||||
-rw-r--r-- | fs/bcachefs/inode.c | 10 | ||||
-rw-r--r-- | fs/bcachefs/inode.h | 2 | ||||
-rw-r--r-- | fs/bcachefs/inode_format.h | 7 | ||||
-rw-r--r-- | fs/bcachefs/namei.c | 166 | ||||
-rw-r--r-- | fs/bcachefs/namei.h | 5 | ||||
-rw-r--r-- | fs/bcachefs/sb-downgrade.c | 6 |
8 files changed, 196 insertions, 13 deletions
diff --git a/fs/bcachefs/bcachefs_format.h b/fs/bcachefs/bcachefs_format.h index 5900ff3715c6..b4a04df5ea95 100644 --- a/fs/bcachefs/bcachefs_format.h +++ b/fs/bcachefs/bcachefs_format.h @@ -699,7 +699,8 @@ struct bch_sb_field_ext { x(casefolding, BCH_VERSION(1, 24)) \ x(extent_flags, BCH_VERSION(1, 25)) \ x(snapshot_deletion_v2, BCH_VERSION(1, 26)) \ - x(fast_device_removal, BCH_VERSION(1, 27)) + x(fast_device_removal, BCH_VERSION(1, 27)) \ + x(inode_has_case_insensitive, BCH_VERSION(1, 28)) enum bcachefs_metadata_version { bcachefs_metadata_version_min = 9, diff --git a/fs/bcachefs/fsck.c b/fs/bcachefs/fsck.c index 5402c40e3697..dbfa3e0b8abb 100644 --- a/fs/bcachefs/fsck.c +++ b/fs/bcachefs/fsck.c @@ -264,7 +264,7 @@ create_lostfound: u64 cpu = raw_smp_processor_id(); bch2_inode_init_early(c, lostfound); - bch2_inode_init_late(lostfound, now, 0, 0, S_IFDIR|0700, 0, &root_inode); + bch2_inode_init_late(c, lostfound, now, 0, 0, S_IFDIR|0700, 0, &root_inode); lostfound->bi_dir = root_inode.bi_inum; lostfound->bi_snapshot = le32_to_cpu(st.root_snapshot); @@ -545,7 +545,7 @@ static int reconstruct_subvol(struct btree_trans *trans, u32 snapshotid, u32 sub u64 cpu = raw_smp_processor_id(); bch2_inode_init_early(c, &new_inode); - bch2_inode_init_late(&new_inode, bch2_current_time(c), 0, 0, S_IFDIR|0755, 0, NULL); + bch2_inode_init_late(c, &new_inode, bch2_current_time(c), 0, 0, S_IFDIR|0755, 0, NULL); new_inode.bi_subvol = subvolid; @@ -635,7 +635,7 @@ static int reconstruct_inode(struct btree_trans *trans, enum btree_id btree, u32 struct bch_inode_unpacked new_inode; bch2_inode_init_early(c, &new_inode); - bch2_inode_init_late(&new_inode, bch2_current_time(c), 0, 0, i_mode|0600, 0, NULL); + bch2_inode_init_late(c, &new_inode, bch2_current_time(c), 0, 0, i_mode|0600, 0, NULL); new_inode.bi_size = i_size; new_inode.bi_inum = inum; new_inode.bi_snapshot = snapshot; @@ -1137,6 +1137,10 @@ static int check_inode(struct btree_trans *trans, goto err; } + ret = bch2_check_inode_has_case_insensitive(trans, &u, &s->ids, &do_update); + if (ret) + goto err; + if (u.bi_dir || u.bi_dir_offset) { ret = check_inode_dirent_inode(trans, &u, &do_update); if (ret) diff --git a/fs/bcachefs/inode.c b/fs/bcachefs/inode.c index 13c1e9df252a..5cf70108ae2f 100644 --- a/fs/bcachefs/inode.c +++ b/fs/bcachefs/inode.c @@ -908,7 +908,8 @@ void bch2_inode_init_early(struct bch_fs *c, get_random_bytes(&inode_u->bi_hash_seed, sizeof(inode_u->bi_hash_seed)); } -void bch2_inode_init_late(struct bch_inode_unpacked *inode_u, u64 now, +void bch2_inode_init_late(struct bch_fs *c, + struct bch_inode_unpacked *inode_u, u64 now, uid_t uid, gid_t gid, umode_t mode, dev_t rdev, struct bch_inode_unpacked *parent) { @@ -935,6 +936,9 @@ void bch2_inode_init_late(struct bch_inode_unpacked *inode_u, u64 now, if (!S_ISDIR(mode)) inode_u->bi_casefold = 0; + + if (bch2_inode_casefold(c, inode_u)) + inode_u->bi_flags |= BCH_INODE_has_case_insensitive; } void bch2_inode_init(struct bch_fs *c, struct bch_inode_unpacked *inode_u, @@ -942,7 +946,7 @@ void bch2_inode_init(struct bch_fs *c, struct bch_inode_unpacked *inode_u, struct bch_inode_unpacked *parent) { bch2_inode_init_early(c, inode_u); - bch2_inode_init_late(inode_u, bch2_current_time(c), + bch2_inode_init_late(c, inode_u, bch2_current_time(c), uid, gid, mode, rdev, parent); } @@ -1279,7 +1283,7 @@ int bch2_inode_set_casefold(struct btree_trans *trans, subvol_inum inum, bi->bi_casefold = v + 1; bi->bi_fields_set |= BIT(Inode_opt_casefold); - return 0; + return bch2_maybe_propagate_has_case_insensitive(trans, inum, bi); #else bch_err(c, "Cannot use casefolding on a kernel without CONFIG_UNICODE"); return -EOPNOTSUPP; diff --git a/fs/bcachefs/inode.h b/fs/bcachefs/inode.h index c31567c09b8a..77ad2d549541 100644 --- a/fs/bcachefs/inode.h +++ b/fs/bcachefs/inode.h @@ -164,7 +164,7 @@ int bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *); void bch2_inode_init_early(struct bch_fs *, struct bch_inode_unpacked *); -void bch2_inode_init_late(struct bch_inode_unpacked *, u64, +void bch2_inode_init_late(struct bch_fs *, struct bch_inode_unpacked *, u64, uid_t, gid_t, umode_t, dev_t, struct bch_inode_unpacked *); void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *, diff --git a/fs/bcachefs/inode_format.h b/fs/bcachefs/inode_format.h index 87e193e8ed25..1f00938b1bdc 100644 --- a/fs/bcachefs/inode_format.h +++ b/fs/bcachefs/inode_format.h @@ -129,6 +129,10 @@ enum inode_opt_id { Inode_opt_nr, }; +/* + * BCH_INODE_has_case_insensitive is set if any descendent is case insensitive - + * for overlayfs + */ #define BCH_INODE_FLAGS() \ x(sync, 0) \ x(immutable, 1) \ @@ -139,7 +143,8 @@ enum inode_opt_id { x(i_sectors_dirty, 6) \ x(unlinked, 7) \ x(backptr_untrusted, 8) \ - x(has_child_snapshot, 9) + x(has_child_snapshot, 9) \ + x(has_case_insensitive, 10) /* bits 20+ reserved for packed fields below: */ diff --git a/fs/bcachefs/namei.c b/fs/bcachefs/namei.c index 8088e810815f..bd093ce56ad9 100644 --- a/fs/bcachefs/namei.c +++ b/fs/bcachefs/namei.c @@ -11,6 +11,14 @@ #include <linux/posix_acl.h> +static inline subvol_inum parent_inum(subvol_inum inum, struct bch_inode_unpacked *inode) +{ + return (subvol_inum) { + .subvol = inode->bi_parent_subvol ?: inum.subvol, + .inum = inode->bi_dir, + }; +} + static inline int is_subdir_for_nlink(struct bch_inode_unpacked *inode) { return S_ISDIR(inode->bi_mode) && !inode->bi_subvol; @@ -49,7 +57,7 @@ int bch2_create_trans(struct btree_trans *trans, if (!(flags & BCH_CREATE_SNAPSHOT)) { /* Normal create path - allocate a new inode: */ - bch2_inode_init_late(new_inode, now, uid, gid, mode, rdev, dir_u); + bch2_inode_init_late(c, new_inode, now, uid, gid, mode, rdev, dir_u); if (flags & BCH_CREATE_TMPFILE) new_inode->bi_flags |= BCH_INODE_unlinked; @@ -510,6 +518,13 @@ int bch2_rename_trans(struct btree_trans *trans, goto err; } + ret = bch2_maybe_propagate_has_case_insensitive(trans, src_inum, src_inode_u) ?: + (mode == BCH_RENAME_EXCHANGE + ? bch2_maybe_propagate_has_case_insensitive(trans, dst_inum, dst_inode_u) + : 0); + if (ret) + goto err; + if (is_subdir_for_nlink(src_inode_u)) { src_dir_u->bi_nlink--; dst_dir_u->bi_nlink++; @@ -611,8 +626,7 @@ int bch2_inum_to_path(struct btree_trans *trans, subvol_inum inum, struct printb goto disconnected; } - inum.subvol = inode.bi_parent_subvol ?: inum.subvol; - inum.inum = inode.bi_dir; + inum = parent_inum(inum, &inode); u32 snapshot; ret = bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot); @@ -847,3 +861,149 @@ fsck_err: bch_err_fn(c, ret); return ret; } + +/* + * BCH_INODE_has_case_insensitive: + * We have to track whether directories have any descendent directory that is + * casefolded - for overlayfs: + */ + +static int bch2_propagate_has_case_insensitive(struct btree_trans *trans, subvol_inum inum) +{ + struct btree_iter iter = {}; + int ret = 0; + + while (true) { + struct bch_inode_unpacked inode; + ret = bch2_inode_peek(trans, &iter, &inode, inum, + BTREE_ITER_intent|BTREE_ITER_with_updates); + if (ret) + break; + + if (inode.bi_flags & BCH_INODE_has_case_insensitive) + break; + + inode.bi_flags |= BCH_INODE_has_case_insensitive; + ret = bch2_inode_write(trans, &iter, &inode); + if (ret) + break; + + bch2_trans_iter_exit(trans, &iter); + if (subvol_inum_eq(inum, BCACHEFS_ROOT_SUBVOL_INUM)) + break; + + inum = parent_inum(inum, &inode); + } + + bch2_trans_iter_exit(trans, &iter); + return ret; +} + +int bch2_maybe_propagate_has_case_insensitive(struct btree_trans *trans, subvol_inum inum, + struct bch_inode_unpacked *inode) +{ + if (!bch2_inode_casefold(trans->c, inode)) + return 0; + + inode->bi_flags |= BCH_INODE_has_case_insensitive; + + return bch2_propagate_has_case_insensitive(trans, parent_inum(inum, inode)); +} + +int bch2_check_inode_has_case_insensitive(struct btree_trans *trans, + struct bch_inode_unpacked *inode, + snapshot_id_list *snapshot_overwrites, + bool *do_update) +{ + struct printbuf buf = PRINTBUF; + bool repairing_parents = false; + int ret = 0; + + if (!S_ISDIR(inode->bi_mode)) { + /* + * Old versions set bi_casefold for non dirs, but that's + * unnecessary and wasteful + */ + if (inode->bi_casefold) { + inode->bi_casefold = 0; + *do_update = true; + } + return 0; + } + + if (trans->c->sb.version < bcachefs_metadata_version_inode_has_case_insensitive) + return 0; + + if (bch2_inode_casefold(trans->c, inode) && + !(inode->bi_flags & BCH_INODE_has_case_insensitive)) { + prt_printf(&buf, "casefolded dir with has_case_insensitive not set\ninum %llu:%u ", + inode->bi_inum, inode->bi_snapshot); + + ret = bch2_inum_snapshot_to_path(trans, inode->bi_inum, inode->bi_snapshot, + snapshot_overwrites, &buf); + if (ret) + goto err; + + if (fsck_err(trans, inode_has_case_insensitive_not_set, "%s", buf.buf)) { + inode->bi_flags |= BCH_INODE_has_case_insensitive; + *do_update = true; + } + } + + if (!(inode->bi_flags & BCH_INODE_has_case_insensitive)) + goto out; + + struct bch_inode_unpacked dir = *inode; + u32 snapshot = dir.bi_snapshot; + + while (!(dir.bi_inum == BCACHEFS_ROOT_INO && + dir.bi_subvol == BCACHEFS_ROOT_SUBVOL)) { + if (dir.bi_parent_subvol) { + ret = bch2_subvolume_get_snapshot(trans, dir.bi_parent_subvol, &snapshot); + if (ret) + goto err; + + snapshot_overwrites = NULL; + } + + ret = bch2_inode_find_by_inum_snapshot(trans, dir.bi_dir, snapshot, &dir, 0); + if (ret) + goto err; + + if (!(dir.bi_flags & BCH_INODE_has_case_insensitive)) { + prt_printf(&buf, "parent of casefolded dir with has_case_insensitive not set\n"); + + ret = bch2_inum_snapshot_to_path(trans, dir.bi_inum, dir.bi_snapshot, + snapshot_overwrites, &buf); + if (ret) + goto err; + + if (fsck_err(trans, inode_parent_has_case_insensitive_not_set, "%s", buf.buf)) { + dir.bi_flags |= BCH_INODE_has_case_insensitive; + ret = __bch2_fsck_write_inode(trans, &dir); + if (ret) + goto err; + } + } + + /* + * We only need to check the first parent, unless we find an + * inconsistency + */ + if (!repairing_parents) + break; + } +out: +err: +fsck_err: + printbuf_exit(&buf); + if (ret) + return ret; + + if (repairing_parents) { + return bch2_trans_commit(trans, NULL, NULL, BCH_TRANS_COMMIT_no_enospc) ?: + -BCH_ERR_transaction_restart_nested; + } + + return 0; +} diff --git a/fs/bcachefs/namei.h b/fs/bcachefs/namei.h index d4d2d2d69517..ae6ebc2d0785 100644 --- a/fs/bcachefs/namei.h +++ b/fs/bcachefs/namei.h @@ -71,4 +71,9 @@ static inline int bch2_check_dirent_target(struct btree_trans *trans, return __bch2_check_dirent_target(trans, dirent_iter, d, target, in_fsck); } +int bch2_maybe_propagate_has_case_insensitive(struct btree_trans *, subvol_inum, + struct bch_inode_unpacked *); +int bch2_check_inode_has_case_insensitive(struct btree_trans *, struct bch_inode_unpacked *, + snapshot_id_list *, bool *); + #endif /* _BCACHEFS_NAMEI_H */ diff --git a/fs/bcachefs/sb-downgrade.c b/fs/bcachefs/sb-downgrade.c index 296c6c925386..861fce1630f0 100644 --- a/fs/bcachefs/sb-downgrade.c +++ b/fs/bcachefs/sb-downgrade.c @@ -100,7 +100,11 @@ BCH_FSCK_ERR_ptr_to_missing_backpointer) \ x(stripe_backpointers, \ BIT_ULL(BCH_RECOVERY_PASS_check_extents_to_backpointers),\ - BCH_FSCK_ERR_ptr_to_missing_backpointer) + BCH_FSCK_ERR_ptr_to_missing_backpointer) \ + x(inode_has_case_insensitive, \ + BIT_ULL(BCH_RECOVERY_PASS_check_inodes), \ + BCH_FSCK_ERR_inode_has_case_insensitive_not_set, \ + BCH_FSCK_ERR_inode_parent_has_case_insensitive_not_set) #define DOWNGRADE_TABLE() \ x(bucket_stripe_sectors, \ |