20 struct cred;
66 extern void set_groups(struct cred *, struct group_info *);
111 struct cred {  struct
149 extern void __put_cred(struct cred *);  argument
152 extern const struct cred *get_task_cred(struct task_struct *);
153 extern struct cred *cred_alloc_blank(void);
154 extern struct cred *prepare_creds(void);
155 extern struct cred *prepare_exec_creds(void);
156 extern int commit_creds(struct cred *);
157 extern void abort_creds(struct cred *);
158 extern struct cred *prepare_kernel_cred(struct task_struct *);
159 extern int set_security_override(struct cred *, u32);
160 extern int set_security_override_from_ctx(struct cred *, const char *);
161 extern int set_create_files_as(struct cred *, struct inode *);
162 extern int cred_fscmp(const struct cred *, const struct cred *);
164 extern int set_cred_ucounts(struct cred *);
166 static inline bool cap_ambient_invariant_ok(const struct cred *cred)  in cap_ambient_invariant_ok()  argument
168 	return cap_issubset(cred->cap_ambient,  in cap_ambient_invariant_ok()
169 			    cap_intersect(cred->cap_permitted,  in cap_ambient_invariant_ok()
170 					  cred->cap_inheritable));  in cap_ambient_invariant_ok()
173 static inline const struct cred *override_creds(const struct cred *override_cred)  in override_creds()
175 	return rcu_replace_pointer(current->cred, override_cred, 1);  in override_creds()
178 static inline const struct cred *revert_creds(const struct cred *revert_cred)  in revert_creds()
180 	return rcu_replace_pointer(current->cred, revert_cred, 1);  in revert_creds()
197 static inline const struct cred *get_cred_many(const struct cred *cred, int nr)  in get_cred_many()  argument
199 	struct cred *nonconst_cred = (struct cred *) cred;  in get_cred_many()
200 	if (!cred)  in get_cred_many()
201 		return cred;  in get_cred_many()
204 	return cred;  in get_cred_many()
216 static inline const struct cred *get_cred(const struct cred *cred)  in get_cred()  argument
218 	return get_cred_many(cred, 1);  in get_cred()
221 static inline const struct cred *get_cred_rcu(const struct cred *cred)  in get_cred_rcu()  argument
223 	struct cred *nonconst_cred = (struct cred *) cred;  in get_cred_rcu()
224 	if (!cred)  in get_cred_rcu()
229 	return cred;  in get_cred_rcu()
244 static inline void put_cred_many(const struct cred *_cred, int nr)  in put_cred_many()
246 	struct cred *cred = (struct cred *) _cred;  in put_cred_many()  local
248 	if (cred) {  in put_cred_many()
249 		if (atomic_long_sub_and_test(nr, &cred->usage))  in put_cred_many()
250 			__put_cred(cred);  in put_cred_many()
261 static inline void put_cred(const struct cred *cred)  in put_cred()  argument
263 	put_cred_many(cred, 1);  in put_cred()
273 	rcu_dereference_protected(current->cred, 1)
316 	const struct cred *__cred;			\
331 	const struct cred *__cred;			\
339 	__typeof__(((struct cred *)NULL)->xxx) ___val;	\
380 	const struct cred *__cred;		\
388 	const struct cred *__cred;		\
396 	const struct cred *__cred;		\