^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include <linux/reiserfs_xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/rwsem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) struct inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) struct dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) struct iattr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) struct super_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) int reiserfs_xattr_register_handlers(void) __init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) void reiserfs_xattr_unregister_handlers(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) int reiserfs_xattr_init(struct super_block *sb, int mount_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) int reiserfs_lookup_privroot(struct super_block *sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) int reiserfs_delete_xattrs(struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) int reiserfs_permission(struct inode *inode, int mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #ifdef CONFIG_REISERFS_FS_XATTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) ssize_t reiserfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) int reiserfs_xattr_get(struct inode *, const char *, void *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) int reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct inode *, const char *, const void *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) size_t, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) extern const struct xattr_handler reiserfs_xattr_user_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) extern const struct xattr_handler reiserfs_xattr_trusted_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) extern const struct xattr_handler reiserfs_xattr_security_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #ifdef CONFIG_REISERFS_FS_SECURITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int reiserfs_security_init(struct inode *dir, struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) const struct qstr *qstr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct reiserfs_security_handle *sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) int reiserfs_security_write(struct reiserfs_transaction_handle *th,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct reiserfs_security_handle *sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) void reiserfs_security_free(struct reiserfs_security_handle *sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static inline int reiserfs_xattrs_initialized(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) return REISERFS_SB(sb)->priv_root && REISERFS_SB(sb)->xattr_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define xattr_size(size) ((size) + sizeof(struct reiserfs_xattr_header))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static inline loff_t reiserfs_xattr_nblocks(struct inode *inode, loff_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) loff_t ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (reiserfs_file_data_log(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ret = _ROUND_UP(xattr_size(size), inode->i_sb->s_blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) ret >>= inode->i_sb->s_blocksize_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * We may have to create up to 3 objects: xattr root, xattr dir, xattr file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * Let's try to be smart about it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * xattr root: We cache it. If it's not cached, we may need to create it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * xattr dir: If anything has been loaded for this inode, we can set a flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * saying so.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * xattr file: Since we don't cache xattrs, we can't tell. We always include
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * blocks for it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * However, since root and dir can be created between calls - YOU MUST SAVE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * THIS VALUE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static inline size_t reiserfs_xattr_jcreate_nblocks(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) size_t nblocks = JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if ((REISERFS_I(inode)->i_flags & i_has_xattr_dir) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (d_really_is_negative(REISERFS_SB(inode->i_sb)->xattr_root))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return nblocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) init_rwsem(&REISERFS_I(inode)->i_xattr_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define reiserfs_listxattr NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #endif /* CONFIG_REISERFS_FS_XATTR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #ifndef CONFIG_REISERFS_FS_SECURITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static inline int reiserfs_security_init(struct inode *dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) const struct qstr *qstr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct reiserfs_security_handle *sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) reiserfs_security_write(struct reiserfs_transaction_handle *th,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct reiserfs_security_handle *sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static inline void reiserfs_security_free(struct reiserfs_security_handle *sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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