[linux-2.6-block.git] / include / linux / cred.h

/* Credentials management - see Documentation/credentials.txt
 *
 * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */

#ifndef _LINUX_CRED_H
#define _LINUX_CRED_H

#include <linux/capability.h>
#include <linux/key.h>
#include <asm/atomic.h>

struct user_struct;
struct cred;
struct inode;

/*
 * COW Supplementary groups list
 */
#define NGROUPS_SMALL		32
#define NGROUPS_PER_BLOCK	((unsigned int)(PAGE_SIZE / sizeof(gid_t)))

struct group_info {
	atomic_t	usage;
	int		ngroups;
	int		nblocks;
	gid_t		small_block[NGROUPS_SMALL];
	gid_t		*blocks[0];
};

/**
 * get_group_info - Get a reference to a group info structure
 * @group_info: The group info to reference
 *
 * This gets a reference to a set of supplementary groups.
 *
 * If the caller is accessing a task's credentials, they must hold the RCU read
 * lock when reading.
 */
static inline struct group_info *get_group_info(struct group_info *gi)
{
	atomic_inc(&gi->usage);
	return gi;
}

/**
 * put_group_info - Release a reference to a group info structure
 * @group_info: The group info to release
 */
#define put_group_info(group_info)			\
do {							\
	if (atomic_dec_and_test(&(group_info)->usage))	\
		groups_free(group_info);		\
} while (0)

extern struct group_info *groups_alloc(int);
extern struct group_info init_groups;
extern void groups_free(struct group_info *);
extern int set_current_groups(struct group_info *);
extern int set_groups(struct cred *, struct group_info *);
extern int groups_search(const struct group_info *, gid_t);

/* access the groups "array" with this macro */
#define GROUP_AT(gi, i) \
	((gi)->blocks[(i) / NGROUPS_PER_BLOCK][(i) % NGROUPS_PER_BLOCK])

extern int in_group_p(gid_t);
extern int in_egroup_p(gid_t);

/*
 * The common credentials for a thread group
 * - shared by CLONE_THREAD
 */
#ifdef CONFIG_KEYS
struct thread_group_cred {
	atomic_t	usage;
	pid_t		tgid;			/* thread group process ID */
	spinlock_t	lock;
	struct key	*session_keyring;	/* keyring inherited over fork */
	struct key	*process_keyring;	/* keyring private to this process */
	struct rcu_head	rcu;			/* RCU deletion hook */
};
#endif

/*
 * The security context of a task
 *
 * The parts of the context break down into two categories:
 *
 *  (1) The objective context of a task.  These parts are used when some other
 *	task is attempting to affect this one.
 *
 *  (2) The subjective context.  These details are used when the task is acting
 *	upon another object, be that a file, a task, a key or whatever.
 *
 * Note that some members of this structure belong to both categories - the
 * LSM security pointer for instance.
 *
 * A task has two security pointers.  task->real_cred points to the objective
 * context that defines that task's actual details.  The objective part of this
 * context is used whenever that task is acted upon.
 *
 * task->cred points to the subjective context that defines the details of how
 * that task is going to act upon another object.  This may be overridden
 * temporarily to point to another security context, but normally points to the
 * same context as task->real_cred.
 */
struct cred {
	atomic_t	usage;
	uid_t		uid;		/* real UID of the task */
	gid_t		gid;		/* real GID of the task */
	uid_t		suid;		/* saved UID of the task */
	gid_t		sgid;		/* saved GID of the task */
	uid_t		euid;		/* effective UID of the task */
	gid_t		egid;		/* effective GID of the task */
	uid_t		fsuid;		/* UID for VFS ops */
	gid_t		fsgid;		/* GID for VFS ops */
	unsigned	securebits;	/* SUID-less security management */
	kernel_cap_t	cap_inheritable; /* caps our children can inherit */
	kernel_cap_t	cap_permitted;	/* caps we're permitted */
	kernel_cap_t	cap_effective;	/* caps we can actually use */
	kernel_cap_t	cap_bset;	/* capability bounding set */
#ifdef CONFIG_KEYS
	unsigned char	jit_keyring;	/* default keyring to attach requested
					 * keys to */
	struct key	*thread_keyring; /* keyring private to this thread */
	struct key	*request_key_auth; /* assumed request_key authority */
	struct thread_group_cred *tgcred; /* thread-group shared credentials */
#endif
#ifdef CONFIG_SECURITY
	void		*security;	/* subjective LSM security */
#endif
	struct user_struct *user;	/* real user ID subscription */
	struct group_info *group_info;	/* supplementary groups for euid/fsgid */
	struct rcu_head	rcu;		/* RCU deletion hook */
};

extern void __put_cred(struct cred *);
extern int copy_creds(struct task_struct *, unsigned long);
extern struct cred *prepare_creds(void);
extern struct cred *prepare_exec_creds(void);
extern struct cred *prepare_usermodehelper_creds(void);
extern int commit_creds(struct cred *);
extern void abort_creds(struct cred *);
extern const struct cred *override_creds(const struct cred *);
extern void revert_creds(const struct cred *);
extern struct cred *prepare_kernel_cred(struct task_struct *);
extern int change_create_files_as(struct cred *, struct inode *);
extern int set_security_override(struct cred *, u32);
extern int set_security_override_from_ctx(struct cred *, const char *);
extern int set_create_files_as(struct cred *, struct inode *);
extern void __init cred_init(void);

/**
 * get_new_cred - Get a reference on a new set of credentials
 * @cred: The new credentials to reference
 *
 * Get a reference on the specified set of new credentials.  The caller must
 * release the reference.
 */
static inline struct cred *get_new_cred(struct cred *cred)
{
	atomic_inc(&cred->usage);
	return cred;
}

/**
 * get_cred - Get a reference on a set of credentials
 * @cred: The credentials to reference
 *
 * Get a reference on the specified set of credentials.  The caller must
 * release the reference.
 *
 * This is used to deal with a committed set of credentials.  Although the
 * pointer is const, this will temporarily discard the const and increment the
 * usage count.  The purpose of this is to attempt to catch at compile time the
 * accidental alteration of a set of credentials that should be considered
 * immutable.
 */
static inline const struct cred *get_cred(const struct cred *cred)
{
	return get_new_cred((struct cred *) cred);
}

/**
 * put_cred - Release a reference to a set of credentials
 * @cred: The credentials to release
 *
 * Release a reference to a set of credentials, deleting them when the last ref
 * is released.
 *
 * This takes a const pointer to a set of credentials because the credentials
 * on task_struct are attached by const pointers to prevent accidental
 * alteration of otherwise immutable credential sets.
 */
static inline void put_cred(const struct cred *_cred)
{
	struct cred *cred = (struct cred *) _cred;

	BUG_ON(atomic_read(&(cred)->usage) <= 0);
	if (atomic_dec_and_test(&(cred)->usage))
		__put_cred(cred);
}

/**
 * current_cred - Access the current task's subjective credentials
 *
 * Access the subjective credentials of the current task.
 */
#define current_cred() \
	(current->cred)

/**
 * __task_cred - Access a task's objective credentials
 * @task: The task to query
 *
 * Access the objective credentials of a task.  The caller must hold the RCU
 * readlock.
 *
 * The caller must make sure task doesn't go away, either by holding a ref on
 * task or by holding tasklist_lock to prevent it from being unlinked.
 */
#define __task_cred(task) \
	((const struct cred *)(rcu_dereference((task)->real_cred)))

/**
 * get_task_cred - Get another task's objective credentials
 * @task: The task to query
 *
 * Get the objective credentials of a task, pinning them so that they can't go
 * away.  Accessing a task's credentials directly is not permitted.
 *
 * The caller must make sure task doesn't go away, either by holding a ref on
 * task or by holding tasklist_lock to prevent it from being unlinked.
 */
#define get_task_cred(task)				\
({							\
	struct cred *__cred;				\
	rcu_read_lock();				\
	__cred = (struct cred *) __task_cred((task));	\
	get_cred(__cred);				\
	rcu_read_unlock();				\
	__cred;						\
})

/**
 * get_current_cred - Get the current task's subjective credentials
 *
 * Get the subjective credentials of the current task, pinning them so that
 * they can't go away.  Accessing the current task's credentials directly is
 * not permitted.
 */
#define get_current_cred()				\
	(get_cred(current_cred()))

/**
 * get_current_user - Get the current task's user_struct
 *
 * Get the user record of the current task, pinning it so that it can't go
 * away.
 */
#define get_current_user()				\
({							\
	struct user_struct *__u;			\
	struct cred *__cred;				\
	__cred = (struct cred *) current_cred();	\
	__u = get_uid(__cred->user);			\
	__u;						\
})

/**
 * get_current_groups - Get the current task's supplementary group list
 *
 * Get the supplementary group list of the current task, pinning it so that it
 * can't go away.
 */
#define get_current_groups()				\
({							\
	struct group_info *__groups;			\
	struct cred *__cred;				\
	__cred = (struct cred *) current_cred();	\
	__groups = get_group_info(__cred->group_info);	\
	__groups;					\
})

#define task_cred_xxx(task, xxx)			\
({							\
	__typeof__(((struct cred *)NULL)->xxx) ___val;	\
	rcu_read_lock();				\
	___val = __task_cred((task))->xxx;		\
	rcu_read_unlock();				\
	___val;						\
})

#define task_uid(task)		(task_cred_xxx((task), uid))
#define task_euid(task)		(task_cred_xxx((task), euid))

#define current_cred_xxx(xxx)			\
({						\
	current->cred->xxx;			\
})

#define current_uid()		(current_cred_xxx(uid))
#define current_gid()		(current_cred_xxx(gid))
#define current_euid()		(current_cred_xxx(euid))
#define current_egid()		(current_cred_xxx(egid))
#define current_suid()		(current_cred_xxx(suid))
#define current_sgid()		(current_cred_xxx(sgid))
#define current_fsuid() 	(current_cred_xxx(fsuid))
#define current_fsgid() 	(current_cred_xxx(fsgid))
#define current_cap()		(current_cred_xxx(cap_effective))
#define current_user()		(current_cred_xxx(user))
#define current_user_ns()	(current_cred_xxx(user)->user_ns)
#define current_security()	(current_cred_xxx(security))

#define current_uid_gid(_uid, _gid)		\
do {						\
	const struct cred *__cred;		\
	__cred = current_cred();		\
	*(_uid) = __cred->uid;			\
	*(_gid) = __cred->gid;			\
} while(0)

#define current_euid_egid(_euid, _egid)		\
do {						\
	const struct cred *__cred;		\
	__cred = current_cred();		\
	*(_euid) = __cred->euid;		\
	*(_egid) = __cred->egid;		\
} while(0)

#define current_fsuid_fsgid(_fsuid, _fsgid)	\
do {						\
	const struct cred *__cred;		\
	__cred = current_cred();		\
	*(_fsuid) = __cred->fsuid;		\
	*(_fsgid) = __cred->fsgid;		\
} while(0)

#endif /* _LINUX_CRED_H */
Commit	Line	Data
98870ab0	1	/* Credentials management - see Documentation/credentials.txt
9e2b2dc4 DH	2	*
	3	* Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
	4	* Written by David Howells (dhowells@redhat.com)
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public Licence
	8	* as published by the Free Software Foundation; either version
	9	* 2 of the Licence, or (at your option) any later version.
	10	*/
	11
	12	#ifndef _LINUX_CRED_H
	13	#define _LINUX_CRED_H
	14
b6dff3ec DH	15	#include <linux/capability.h>
	16	#include <linux/key.h>
	17	#include <asm/atomic.h>
	18
	19	struct user_struct;
	20	struct cred;
3a3b7ce9	21	struct inode;
b6dff3ec DH	22
	23	/*
	24	* COW Supplementary groups list
	25	*/
	26	#define NGROUPS_SMALL 32
	27	#define NGROUPS_PER_BLOCK ((unsigned int)(PAGE_SIZE / sizeof(gid_t)))
	28
	29	struct group_info {
	30	atomic_t usage;
	31	int ngroups;
	32	int nblocks;
	33	gid_t small_block[NGROUPS_SMALL];
	34	gid_t *blocks[0];
	35	};
	36
	37	/**
	38	* get_group_info - Get a reference to a group info structure
	39	* @group_info: The group info to reference
	40	*
86a264ab DH	41	* This gets a reference to a set of supplementary groups.
	42	*
	43	* If the caller is accessing a task's credentials, they must hold the RCU read
	44	* lock when reading.
b6dff3ec	45	*/
86a264ab DH	46	static inline struct group_info get_group_info(struct group_info gi)
	47	{
	48	atomic_inc(&gi->usage);
	49	return gi;
	50	}
b6dff3ec DH	51
	52	/**
	53	* put_group_info - Release a reference to a group info structure
	54	* @group_info: The group info to release
	55	*/
	56	#define put_group_info(group_info) \
	57	do { \
	58	if (atomic_dec_and_test(&(group_info)->usage)) \
	59	groups_free(group_info); \
	60	} while (0)
	61
	62	extern struct group_info *groups_alloc(int);
18b6e041	63	extern struct group_info init_groups;
b6dff3ec DH	64	extern void groups_free(struct group_info *);
	65	extern int set_current_groups(struct group_info *);
	66	extern int set_groups(struct cred , struct group_info );
86a264ab	67	extern int groups_search(const struct group_info *, gid_t);
b6dff3ec DH	68
	69	/* access the groups "array" with this macro */
	70	#define GROUP_AT(gi, i) \
	71	((gi)->blocks[(i) / NGROUPS_PER_BLOCK][(i) % NGROUPS_PER_BLOCK])
	72
	73	extern int in_group_p(gid_t);
	74	extern int in_egroup_p(gid_t);
	75
bb952bb9 DH	76	/*
	77	* The common credentials for a thread group
	78	* - shared by CLONE_THREAD
	79	*/
	80	#ifdef CONFIG_KEYS
	81	struct thread_group_cred {
	82	atomic_t usage;
	83	pid_t tgid; /* thread group process ID */
	84	spinlock_t lock;
	85	struct key session_keyring; / keyring inherited over fork */
	86	struct key process_keyring; / keyring private to this process */
	87	struct rcu_head rcu; /* RCU deletion hook */
	88	};
	89	#endif
	90
b6dff3ec DH	91	/*
	92	* The security context of a task
	93	*
	94	* The parts of the context break down into two categories:
	95	*
	96	* (1) The objective context of a task. These parts are used when some other
	97	* task is attempting to affect this one.
	98	*
	99	* (2) The subjective context. These details are used when the task is acting
	100	* upon another object, be that a file, a task, a key or whatever.
	101	*
	102	* Note that some members of this structure belong to both categories - the
	103	* LSM security pointer for instance.
	104	*
	105	* A task has two security pointers. task->real_cred points to the objective
	106	* context that defines that task's actual details. The objective part of this
	107	* context is used whenever that task is acted upon.
	108	*
	109	* task->cred points to the subjective context that defines the details of how
	110	* that task is going to act upon another object. This may be overridden
	111	* temporarily to point to another security context, but normally points to the
	112	* same context as task->real_cred.
	113	*/
	114	struct cred {
	115	atomic_t usage;
	116	uid_t uid; /* real UID of the task */
	117	gid_t gid; /* real GID of the task */
	118	uid_t suid; /* saved UID of the task */
	119	gid_t sgid; /* saved GID of the task */
	120	uid_t euid; /* effective UID of the task */
	121	gid_t egid; /* effective GID of the task */
	122	uid_t fsuid; /* UID for VFS ops */
	123	gid_t fsgid; /* GID for VFS ops */
	124	unsigned securebits; /* SUID-less security management */
	125	kernel_cap_t cap_inheritable; /* caps our children can inherit */
	126	kernel_cap_t cap_permitted; /* caps we're permitted */
	127	kernel_cap_t cap_effective; /* caps we can actually use */
	128	kernel_cap_t cap_bset; /* capability bounding set */
	129	#ifdef CONFIG_KEYS
	130	unsigned char jit_keyring; /* default keyring to attach requested
	131	* keys to */
	132	struct key thread_keyring; / keyring private to this thread */
	133	struct key request_key_auth; / assumed request_key authority */
bb952bb9	134	struct thread_group_cred tgcred; / thread-group shared credentials */
b6dff3ec DH	135	#endif
	136	#ifdef CONFIG_SECURITY
	137	void security; / subjective LSM security */
	138	#endif
	139	struct user_struct user; / real user ID subscription */
	140	struct group_info group_info; / supplementary groups for euid/fsgid */
	141	struct rcu_head rcu; /* RCU deletion hook */
b6dff3ec DH	142	};
b6dff3ec DH	143
f1752eec DH	144	extern void __put_cred(struct cred *);
f1752eec DH	145	extern int copy_creds(struct task_struct *, unsigned long);
d84f4f99	146	extern struct cred *prepare_creds(void);
a6f76f23	147	extern struct cred *prepare_exec_creds(void);
d84f4f99 DH	148	extern struct cred *prepare_usermodehelper_creds(void);
	149	extern int commit_creds(struct cred *);
	150	extern void abort_creds(struct cred *);
3b11a1de DH	151	extern const struct cred override_creds(const struct cred );
3b11a1de DH	152	extern void revert_creds(const struct cred *);
3a3b7ce9 DH	153	extern struct cred prepare_kernel_cred(struct task_struct );
	154	extern int change_create_files_as(struct cred , struct inode );
	155	extern int set_security_override(struct cred *, u32);
	156	extern int set_security_override_from_ctx(struct cred , const char );
	157	extern int set_create_files_as(struct cred , struct inode );
d84f4f99 DH	158	extern void __init cred_init(void);
	159
	160	/**
	161	* get_new_cred - Get a reference on a new set of credentials
	162	* @cred: The new credentials to reference
	163	*
	164	* Get a reference on the specified set of new credentials. The caller must
	165	* release the reference.
	166	*/
	167	static inline struct cred get_new_cred(struct cred cred)
	168	{
	169	atomic_inc(&cred->usage);
	170	return cred;
	171	}
f1752eec DH	172
	173	/**
	174	* get_cred - Get a reference on a set of credentials
	175	* @cred: The credentials to reference
	176	*
	177	* Get a reference on the specified set of credentials. The caller must
	178	* release the reference.
98870ab0 DH	179	*
	180	* This is used to deal with a committed set of credentials. Although the
	181	* pointer is const, this will temporarily discard the const and increment the
	182	* usage count. The purpose of this is to attempt to catch at compile time the
	183	* accidental alteration of a set of credentials that should be considered
	184	* immutable.
f1752eec	185	*/
d84f4f99	186	static inline const struct cred get_cred(const struct cred cred)
f1752eec	187	{
d84f4f99	188	return get_new_cred((struct cred *) cred);
f1752eec DH	189	}
	190
	191	/**
	192	* put_cred - Release a reference to a set of credentials
	193	* @cred: The credentials to release
	194	*
	195	* Release a reference to a set of credentials, deleting them when the last ref
	196	* is released.
98870ab0 DH	197	*
	198	* This takes a const pointer to a set of credentials because the credentials
	199	* on task_struct are attached by const pointers to prevent accidental
	200	* alteration of otherwise immutable credential sets.
f1752eec	201	*/
c69e8d9c	202	static inline void put_cred(const struct cred *_cred)
f1752eec	203	{
c69e8d9c	204	struct cred cred = (struct cred ) _cred;
d84f4f99 DH	205
d84f4f99 DH	206	BUG_ON(atomic_read(&(cred)->usage) <= 0);
f1752eec DH	207	if (atomic_dec_and_test(&(cred)->usage))
	208	__put_cred(cred);
	209	}
	210
86a264ab	211	/**
3b11a1de	212	* current_cred - Access the current task's subjective credentials
86a264ab	213	*
3b11a1de	214	* Access the subjective credentials of the current task.
86a264ab DH	215	*/
	216	#define current_cred() \
	217	(current->cred)
	218
	219	/**
3b11a1de	220	* __task_cred - Access a task's objective credentials
86a264ab DH	221	* @task: The task to query
86a264ab DH	222	*
3b11a1de DH	223	* Access the objective credentials of a task. The caller must hold the RCU
3b11a1de DH	224	* readlock.
86a264ab DH	225	*
	226	* The caller must make sure task doesn't go away, either by holding a ref on
	227	* task or by holding tasklist_lock to prevent it from being unlinked.
	228	*/
	229	#define __task_cred(task) \
3b11a1de	230	((const struct cred *)(rcu_dereference((task)->real_cred)))
86a264ab DH	231
86a264ab DH	232	/**
3b11a1de	233	* get_task_cred - Get another task's objective credentials
86a264ab DH	234	* @task: The task to query
86a264ab DH	235	*
3b11a1de DH	236	* Get the objective credentials of a task, pinning them so that they can't go
3b11a1de DH	237	* away. Accessing a task's credentials directly is not permitted.
86a264ab DH	238	*
	239	* The caller must make sure task doesn't go away, either by holding a ref on
	240	* task or by holding tasklist_lock to prevent it from being unlinked.
	241	*/
	242	#define get_task_cred(task) \
	243	({ \
	244	struct cred *__cred; \
	245	rcu_read_lock(); \
	246	__cred = (struct cred *) __task_cred((task)); \
	247	get_cred(__cred); \
	248	rcu_read_unlock(); \
	249	__cred; \
	250	})
	251
	252	/**
3b11a1de	253	* get_current_cred - Get the current task's subjective credentials
86a264ab	254	*
3b11a1de DH	255	* Get the subjective credentials of the current task, pinning them so that
	256	* they can't go away. Accessing the current task's credentials directly is
	257	* not permitted.
86a264ab DH	258	*/
	259	#define get_current_cred() \
	260	(get_cred(current_cred()))
	261
	262	/**
	263	* get_current_user - Get the current task's user_struct
	264	*
	265	* Get the user record of the current task, pinning it so that it can't go
	266	* away.
	267	*/
	268	#define get_current_user() \
	269	({ \
	270	struct user_struct *__u; \
	271	struct cred *__cred; \
	272	__cred = (struct cred *) current_cred(); \
	273	__u = get_uid(__cred->user); \
	274	__u; \
	275	})
	276
	277	/**
	278	* get_current_groups - Get the current task's supplementary group list
	279	*
	280	* Get the supplementary group list of the current task, pinning it so that it
	281	* can't go away.
	282	*/
	283	#define get_current_groups() \
	284	({ \
	285	struct group_info *__groups; \
	286	struct cred *__cred; \
	287	__cred = (struct cred *) current_cred(); \
	288	__groups = get_group_info(__cred->group_info); \
	289	__groups; \
	290	})
	291
d84f4f99 DH	292	#define task_cred_xxx(task, xxx) \
	293	({ \
	294	__typeof__(((struct cred *)NULL)->xxx) ___val; \
	295	rcu_read_lock(); \
	296	___val = __task_cred((task))->xxx; \
	297	rcu_read_unlock(); \
	298	___val; \
86a264ab DH	299	})
	300
	301	#define task_uid(task) (task_cred_xxx((task), uid))
	302	#define task_euid(task) (task_cred_xxx((task), euid))
	303
	304	#define current_cred_xxx(xxx) \
	305	({ \
	306	current->cred->xxx; \
	307	})
	308
	309	#define current_uid() (current_cred_xxx(uid))
	310	#define current_gid() (current_cred_xxx(gid))
	311	#define current_euid() (current_cred_xxx(euid))
	312	#define current_egid() (current_cred_xxx(egid))
	313	#define current_suid() (current_cred_xxx(suid))
	314	#define current_sgid() (current_cred_xxx(sgid))
	315	#define current_fsuid() (current_cred_xxx(fsuid))
	316	#define current_fsgid() (current_cred_xxx(fsgid))
	317	#define current_cap() (current_cred_xxx(cap_effective))
	318	#define current_user() (current_cred_xxx(user))
18b6e041	319	#define current_user_ns() (current_cred_xxx(user)->user_ns)
86a264ab DH	320	#define current_security() (current_cred_xxx(security))
	321
	322	#define current_uid_gid(_uid, _gid) \
	323	do { \
	324	const struct cred *__cred; \
	325	__cred = current_cred(); \
	326	*(_uid) = __cred->uid; \
	327	*(_gid) = __cred->gid; \
	328	} while(0)
	329
	330	#define current_euid_egid(_euid, _egid) \
	331	do { \
	332	const struct cred *__cred; \
	333	__cred = current_cred(); \
	334	*(_euid) = __cred->euid; \
	335	*(_egid) = __cred->egid; \
	336	} while(0)
	337
	338	#define current_fsuid_fsgid(_fsuid, _fsgid) \
	339	do { \
	340	const struct cred *__cred; \
	341	__cred = current_cred(); \
	342	*(_fsuid) = __cred->fsuid; \
	343	*(_fsgid) = __cred->fsgid; \
	344	} while(0)
	345
9e2b2dc4	346	#endif /* _LINUX_CRED_H */