Git Repo - linux.git/blame_incremental

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Commit	Line	Data
	1	/*
	2	File: fs/ext4/acl.h
	3
	4	(C) 2001 Andreas Gruenbacher, <[email protected]>
	5	*/
	6
	7	#include <linux/posix_acl_xattr.h>
	8
	9	#define EXT4_ACL_VERSION 0x0001
	10
	11	typedef struct {
	12	__le16 e_tag;
	13	__le16 e_perm;
	14	__le32 e_id;
	15	} ext4_acl_entry;
	16
	17	typedef struct {
	18	__le16 e_tag;
	19	__le16 e_perm;
	20	} ext4_acl_entry_short;
	21
	22	typedef struct {
	23	__le32 a_version;
	24	} ext4_acl_header;
	25
	26	static inline size_t ext4_acl_size(int count)
	27	{
	28	if (count <= 4) {
	29	return sizeof(ext4_acl_header) +
	30	count * sizeof(ext4_acl_entry_short);
	31	} else {
	32	return sizeof(ext4_acl_header) +
	33	4 * sizeof(ext4_acl_entry_short) +
	34	(count - 4) * sizeof(ext4_acl_entry);
	35	}
	36	}
	37
	38	static inline int ext4_acl_count(size_t size)
	39	{
	40	ssize_t s;
	41	size -= sizeof(ext4_acl_header);
	42	s = size - 4 * sizeof(ext4_acl_entry_short);
	43	if (s < 0) {
	44	if (size % sizeof(ext4_acl_entry_short))
	45	return -1;
	46	return size / sizeof(ext4_acl_entry_short);
	47	} else {
	48	if (s % sizeof(ext4_acl_entry))
	49	return -1;
	50	return s / sizeof(ext4_acl_entry) + 4;
	51	}
	52	}
	53
	54	#ifdef CONFIG_EXT4_FS_POSIX_ACL
	55
	56	/* acl.c */
	57	extern int ext4_check_acl(struct inode *, int);
	58	extern int ext4_acl_chmod(struct inode *);
	59	extern int ext4_init_acl(handle_t , struct inode , struct inode *);
	60
	61	#else /* CONFIG_EXT4_FS_POSIX_ACL */
	62	#include <linux/sched.h>
	63	#define ext4_check_acl NULL
	64
	65	static inline int
	66	ext4_acl_chmod(struct inode *inode)
	67	{
	68	return 0;
	69	}
	70
	71	static inline int
	72	ext4_init_acl(handle_t handle, struct inode inode, struct inode *dir)
	73	{
	74	return 0;
	75	}
	76	#endif /* CONFIG_EXT4_FS_POSIX_ACL */
	77