cregit-Linux how code gets into the kernel

Release 4.7 include/linux/posix_acl.h

Directory: include/linux
/*
  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/bug.h>
#include <linux/slab.h>
#include <linux/rcupdate.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;
	union {
		
kuid_t		e_uid;
		
kgid_t		e_gid;
	};
};


struct posix_acl {
	
atomic_t		a_refcount;
	
struct rcu_head		a_rcu;
	
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; }

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theodore tsotheodore tso29100.00%1100.00%
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/* * Free an ACL handle. */
static inline void posix_acl_release(struct posix_acl *acl) { if (acl && atomic_dec_and_test(&acl->a_refcount)) kfree_rcu(acl, a_rcu); }

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theodore tsotheodore tso2890.32%150.00%
al viroal viro39.68%150.00%
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/* posix_acl.c */ extern void posix_acl_init(struct posix_acl *, int); extern struct posix_acl *posix_acl_alloc(int, 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(umode_t, gfp_t); extern int posix_acl_equiv_mode(const struct posix_acl *, umode_t *); extern int __posix_acl_create(struct posix_acl **, gfp_t, umode_t *); extern int __posix_acl_chmod(struct posix_acl **, gfp_t, umode_t); extern struct posix_acl *get_posix_acl(struct inode *, int); extern int set_posix_acl(struct inode *, int, struct posix_acl *); #ifdef CONFIG_FS_POSIX_ACL extern int posix_acl_chmod(struct inode *, umode_t); extern int posix_acl_create(struct inode *, umode_t *, struct posix_acl **, struct posix_acl **); extern int simple_set_acl(struct inode *, struct posix_acl *, int); extern int simple_acl_create(struct inode *, struct inode *); struct posix_acl *get_cached_acl(struct inode *inode, int type); struct posix_acl *get_cached_acl_rcu(struct inode *inode, int type); void set_cached_acl(struct inode *inode, int type, struct posix_acl *acl); void forget_cached_acl(struct inode *inode, int type); void forget_all_cached_acls(struct inode *inode);
static inline void cache_no_acl(struct inode *inode) { inode->i_acl = NULL; inode->i_default_acl = NULL; }

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al viroal viro24100.00%1100.00%
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#else
static inline int posix_acl_chmod(struct inode *inode, umode_t mode) { return 0; }

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christoph hellwigchristoph hellwig18100.00%2100.00%
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#define simple_set_acl NULL
static inline int simple_acl_create(struct inode *dir, struct inode *inode) { return 0; }

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christoph hellwigchristoph hellwig20100.00%1100.00%
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static inline void cache_no_acl(struct inode *inode) { }

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christoph hellwigchristoph hellwig11100.00%1100.00%
Total11100.00%1100.00%


static inline int posix_acl_create(struct inode *inode, umode_t *mode, struct posix_acl **default_acl, struct posix_acl **acl) { *default_acl = *acl = NULL; return 0; }

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christoph hellwigchristoph hellwig39100.00%1100.00%
Total39100.00%1100.00%


static inline void forget_all_cached_acls(struct inode *inode) { }

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christoph hellwigchristoph hellwig11100.00%1100.00%
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#endif /* CONFIG_FS_POSIX_ACL */ struct posix_acl *get_acl(struct inode *inode, int type); #endif /* __LINUX_POSIX_ACL_H */

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theodore tsotheodore tso25542.71%14.17%
christoph hellwigchristoph hellwig18530.99%520.83%
al viroal viro10617.76%1145.83%
chuck leverchuck lever111.84%14.17%
eric w. biedermaneric w. biederman101.68%14.17%
nick pigginnick piggin91.51%14.17%
steven whitehousesteven whitehouse81.34%14.17%
andrew mortonandrew morton50.84%14.17%
markus trippelsdorfmarkus trippelsdorf50.84%14.17%
paul gortmakerpaul gortmaker30.50%14.17%
Total597100.00%24100.00%
Directory: include/linux
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