reiserfs_acl.h
上传用户:szlgq88
上传日期:2009-04-28
资源大小:48287k
文件大小:2k
- #include <linux/init.h>
- #include <linux/posix_acl.h>
- #define REISERFS_ACL_VERSION 0x0001
- typedef struct {
- __le16 e_tag;
- __le16 e_perm;
- __le32 e_id;
- } reiserfs_acl_entry;
- typedef struct {
- __le16 e_tag;
- __le16 e_perm;
- } reiserfs_acl_entry_short;
- typedef struct {
- __le32 a_version;
- } reiserfs_acl_header;
- static inline size_t reiserfs_acl_size(int count)
- {
- if (count <= 4) {
- return sizeof(reiserfs_acl_header) +
- count * sizeof(reiserfs_acl_entry_short);
- } else {
- return sizeof(reiserfs_acl_header) +
- 4 * sizeof(reiserfs_acl_entry_short) +
- (count - 4) * sizeof(reiserfs_acl_entry);
- }
- }
- static inline int reiserfs_acl_count(size_t size)
- {
- ssize_t s;
- size -= sizeof(reiserfs_acl_header);
- s = size - 4 * sizeof(reiserfs_acl_entry_short);
- if (s < 0) {
- if (size % sizeof(reiserfs_acl_entry_short))
- return -1;
- return size / sizeof(reiserfs_acl_entry_short);
- } else {
- if (s % sizeof(reiserfs_acl_entry))
- return -1;
- return s / sizeof(reiserfs_acl_entry) + 4;
- }
- }
- #ifdef CONFIG_REISERFS_FS_POSIX_ACL
- struct posix_acl *reiserfs_get_acl(struct inode *inode, int type);
- int reiserfs_acl_chmod(struct inode *inode);
- int reiserfs_inherit_default_acl(struct inode *dir, struct dentry *dentry,
- struct inode *inode);
- int reiserfs_cache_default_acl(struct inode *dir);
- extern int reiserfs_xattr_posix_acl_init(void) __init;
- extern int reiserfs_xattr_posix_acl_exit(void);
- extern struct reiserfs_xattr_handler posix_acl_default_handler;
- extern struct reiserfs_xattr_handler posix_acl_access_handler;
- #else
- #define reiserfs_get_acl NULL
- #define reiserfs_cache_default_acl(inode) 0
- static inline int reiserfs_xattr_posix_acl_init(void)
- {
- return 0;
- }
- static inline int reiserfs_xattr_posix_acl_exit(void)
- {
- return 0;
- }
- static inline int reiserfs_acl_chmod(struct inode *inode)
- {
- return 0;
- }
- static inline int
- reiserfs_inherit_default_acl(const struct inode *dir, struct dentry *dentry,
- struct inode *inode)
- {
- return 0;
- }
- #endif