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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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4ba99dde33
Add a flag for tracking whether a directory has case-insensitive descendents - so that overlayfs can disallow mounting, even though the filesystem supports case insensitivity. This is a new on disk format version, with a (cheap) upgrade to ensure the flag is correctly set on existing inodes. Create, rename and fssetxattr are all plumbed to ensure the new flag is set, and we've got new fsck code that hooks into check_inode(0. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_NAMEI_H
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#define _BCACHEFS_NAMEI_H
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#include "dirent.h"
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struct posix_acl;
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#define BCH_CREATE_TMPFILE (1U << 0)
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#define BCH_CREATE_SUBVOL (1U << 1)
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#define BCH_CREATE_SNAPSHOT (1U << 2)
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#define BCH_CREATE_SNAPSHOT_RO (1U << 3)
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int bch2_create_trans(struct btree_trans *, subvol_inum,
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struct bch_inode_unpacked *,
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struct bch_inode_unpacked *,
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const struct qstr *,
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uid_t, gid_t, umode_t, dev_t,
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struct posix_acl *,
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struct posix_acl *,
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subvol_inum, unsigned);
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int bch2_link_trans(struct btree_trans *,
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subvol_inum, struct bch_inode_unpacked *,
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subvol_inum, struct bch_inode_unpacked *,
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const struct qstr *);
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int bch2_unlink_trans(struct btree_trans *, subvol_inum,
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struct bch_inode_unpacked *,
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struct bch_inode_unpacked *,
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const struct qstr *, bool);
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int bch2_rename_trans(struct btree_trans *,
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subvol_inum, struct bch_inode_unpacked *,
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subvol_inum, struct bch_inode_unpacked *,
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struct bch_inode_unpacked *,
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struct bch_inode_unpacked *,
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const struct qstr *,
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const struct qstr *,
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enum bch_rename_mode);
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bool bch2_reinherit_attrs(struct bch_inode_unpacked *,
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struct bch_inode_unpacked *);
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int bch2_inum_to_path(struct btree_trans *, subvol_inum, struct printbuf *);
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int bch2_inum_snapshot_to_path(struct btree_trans *, u64, u32,
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snapshot_id_list *, struct printbuf *);
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int __bch2_check_dirent_target(struct btree_trans *,
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struct btree_iter *,
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struct bkey_s_c_dirent,
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struct bch_inode_unpacked *, bool);
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static inline bool inode_points_to_dirent(struct bch_inode_unpacked *inode,
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struct bkey_s_c_dirent d)
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{
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return inode->bi_dir == d.k->p.inode &&
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inode->bi_dir_offset == d.k->p.offset;
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}
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static inline int bch2_check_dirent_target(struct btree_trans *trans,
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struct btree_iter *dirent_iter,
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struct bkey_s_c_dirent d,
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struct bch_inode_unpacked *target,
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bool in_fsck)
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{
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if (likely(inode_points_to_dirent(target, d) &&
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d.v->d_type == inode_d_type(target)))
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return 0;
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return __bch2_check_dirent_target(trans, dirent_iter, d, target, in_fsck);
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}
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int bch2_maybe_propagate_has_case_insensitive(struct btree_trans *, subvol_inum,
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struct bch_inode_unpacked *);
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int bch2_check_inode_has_case_insensitive(struct btree_trans *, struct bch_inode_unpacked *,
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snapshot_id_list *, bool *);
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#endif /* _BCACHEFS_NAMEI_H */
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