1#include <linux/init.h> 2#include <linux/posix_acl.h> 3 4#define REISERFS_ACL_VERSION 0x0001 5 6typedef struct { 7 __le16 e_tag; 8 __le16 e_perm; 9 __le32 e_id; 10} reiserfs_acl_entry; 11 12typedef struct { 13 __le16 e_tag; 14 __le16 e_perm; 15} reiserfs_acl_entry_short; 16 17typedef struct { 18 __le32 a_version; 19} reiserfs_acl_header; 20 21static inline size_t reiserfs_acl_size(int count) 22{ 23 if (count <= 4) { 24 return sizeof(reiserfs_acl_header) + 25 count * sizeof(reiserfs_acl_entry_short); 26 } else { 27 return sizeof(reiserfs_acl_header) + 28 4 * sizeof(reiserfs_acl_entry_short) + 29 (count - 4) * sizeof(reiserfs_acl_entry); 30 } 31} 32 33static inline int reiserfs_acl_count(size_t size) 34{ 35 ssize_t s; 36 size -= sizeof(reiserfs_acl_header); 37 s = size - 4 * sizeof(reiserfs_acl_entry_short); 38 if (s < 0) { 39 if (size % sizeof(reiserfs_acl_entry_short)) 40 return -1; 41 return size / sizeof(reiserfs_acl_entry_short); 42 } else { 43 if (s % sizeof(reiserfs_acl_entry)) 44 return -1; 45 return s / sizeof(reiserfs_acl_entry) + 4; 46 } 47} 48 49#ifdef CONFIG_REISERFS_FS_POSIX_ACL 50struct posix_acl *reiserfs_get_acl(struct inode *inode, int type); 51int reiserfs_acl_chmod(struct inode *inode); 52int reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, 53 struct inode *dir, struct dentry *dentry, 54 struct inode *inode); 55int reiserfs_cache_default_acl(struct inode *dir); 56extern struct xattr_handler reiserfs_posix_acl_default_handler; 57extern struct xattr_handler reiserfs_posix_acl_access_handler; 58 59#else 60 61#define reiserfs_cache_default_acl(inode) 0 62 63static inline struct posix_acl *reiserfs_get_acl(struct inode *inode, int type) 64{ 65 return NULL; 66} 67 68static inline int reiserfs_acl_chmod(struct inode *inode) 69{ 70 return 0; 71} 72 73static inline int 74reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, 75 const struct inode *dir, struct dentry *dentry, 76 struct inode *inode) 77{ 78 return 0; 79} 80#endif 81