dd0fc66fb3
- added typedef unsigned int __nocast gfp_t; - replaced __nocast uses for gfp flags with gfp_t - it gives exactly the same warnings as far as sparse is concerned, doesn't change generated code (from gcc point of view we replaced unsigned int with typedef) and documents what's going on far better. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
86 lines
2 KiB
C
86 lines
2 KiB
C
/*
|
|
File: linux/posix_acl.h
|
|
|
|
(C) 2002 Andreas Gruenbacher, <a.gruenbacher@computer.org>
|
|
*/
|
|
|
|
|
|
#ifndef __LINUX_POSIX_ACL_H
|
|
#define __LINUX_POSIX_ACL_H
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#define ACL_UNDEFINED_ID (-1)
|
|
|
|
/* a_type field in acl_user_posix_entry_t */
|
|
#define ACL_TYPE_ACCESS (0x8000)
|
|
#define ACL_TYPE_DEFAULT (0x4000)
|
|
|
|
/* e_tag entry in struct posix_acl_entry */
|
|
#define ACL_USER_OBJ (0x01)
|
|
#define ACL_USER (0x02)
|
|
#define ACL_GROUP_OBJ (0x04)
|
|
#define ACL_GROUP (0x08)
|
|
#define ACL_MASK (0x10)
|
|
#define ACL_OTHER (0x20)
|
|
|
|
/* permissions in the e_perm field */
|
|
#define ACL_READ (0x04)
|
|
#define ACL_WRITE (0x02)
|
|
#define ACL_EXECUTE (0x01)
|
|
//#define ACL_ADD (0x08)
|
|
//#define ACL_DELETE (0x10)
|
|
|
|
struct posix_acl_entry {
|
|
short e_tag;
|
|
unsigned short e_perm;
|
|
unsigned int e_id;
|
|
};
|
|
|
|
struct posix_acl {
|
|
atomic_t a_refcount;
|
|
unsigned int a_count;
|
|
struct posix_acl_entry a_entries[0];
|
|
};
|
|
|
|
#define FOREACH_ACL_ENTRY(pa, acl, pe) \
|
|
for(pa=(acl)->a_entries, pe=pa+(acl)->a_count; pa<pe; pa++)
|
|
|
|
|
|
/*
|
|
* Duplicate an ACL handle.
|
|
*/
|
|
static inline struct posix_acl *
|
|
posix_acl_dup(struct posix_acl *acl)
|
|
{
|
|
if (acl)
|
|
atomic_inc(&acl->a_refcount);
|
|
return acl;
|
|
}
|
|
|
|
/*
|
|
* Free an ACL handle.
|
|
*/
|
|
static inline void
|
|
posix_acl_release(struct posix_acl *acl)
|
|
{
|
|
if (acl && atomic_dec_and_test(&acl->a_refcount))
|
|
kfree(acl);
|
|
}
|
|
|
|
|
|
/* posix_acl.c */
|
|
|
|
extern struct posix_acl *posix_acl_alloc(int, gfp_t);
|
|
extern struct posix_acl *posix_acl_clone(const struct posix_acl *, gfp_t);
|
|
extern int posix_acl_valid(const struct posix_acl *);
|
|
extern int posix_acl_permission(struct inode *, const struct posix_acl *, int);
|
|
extern struct posix_acl *posix_acl_from_mode(mode_t, gfp_t);
|
|
extern int posix_acl_equiv_mode(const struct posix_acl *, mode_t *);
|
|
extern int posix_acl_create_masq(struct posix_acl *, mode_t *);
|
|
extern int posix_acl_chmod_masq(struct posix_acl *, mode_t);
|
|
|
|
extern struct posix_acl *get_posix_acl(struct inode *, int);
|
|
extern int set_posix_acl(struct inode *, int, struct posix_acl *);
|
|
|
|
#endif /* __LINUX_POSIX_ACL_H */
|