Lines Matching refs:cred
43 struct cred init_cred = {
67 static inline void set_cred_subscribers(struct cred *cred, int n) in set_cred_subscribers() argument
70 atomic_set(&cred->subscribers, n); in set_cred_subscribers()
74 static inline int read_cred_subscribers(const struct cred *cred) in read_cred_subscribers() argument
77 return atomic_read(&cred->subscribers); in read_cred_subscribers()
83 static inline void alter_cred_subscribers(const struct cred *_cred, int n) in alter_cred_subscribers()
86 struct cred *cred = (struct cred *) _cred; in alter_cred_subscribers() local
88 atomic_add(n, &cred->subscribers); in alter_cred_subscribers()
97 struct cred *cred = container_of(rcu, struct cred, rcu); in put_cred_rcu() local
99 kdebug("put_cred_rcu(%p)", cred); in put_cred_rcu()
102 if (cred->magic != CRED_MAGIC_DEAD || in put_cred_rcu()
103 atomic_read(&cred->usage) != 0 || in put_cred_rcu()
104 read_cred_subscribers(cred) != 0) in put_cred_rcu()
107 cred, cred->magic, cred->put_addr, in put_cred_rcu()
108 atomic_read(&cred->usage), in put_cred_rcu()
109 read_cred_subscribers(cred)); in put_cred_rcu()
111 if (atomic_read(&cred->usage) != 0) in put_cred_rcu()
113 cred, atomic_read(&cred->usage)); in put_cred_rcu()
116 security_cred_free(cred); in put_cred_rcu()
117 key_put(cred->session_keyring); in put_cred_rcu()
118 key_put(cred->process_keyring); in put_cred_rcu()
119 key_put(cred->thread_keyring); in put_cred_rcu()
120 key_put(cred->request_key_auth); in put_cred_rcu()
121 if (cred->group_info) in put_cred_rcu()
122 put_group_info(cred->group_info); in put_cred_rcu()
123 free_uid(cred->user); in put_cred_rcu()
124 put_user_ns(cred->user_ns); in put_cred_rcu()
125 kmem_cache_free(cred_jar, cred); in put_cred_rcu()
134 void __put_cred(struct cred *cred) in __put_cred() argument
136 kdebug("__put_cred(%p{%d,%d})", cred, in __put_cred()
137 atomic_read(&cred->usage), in __put_cred()
138 read_cred_subscribers(cred)); in __put_cred()
140 BUG_ON(atomic_read(&cred->usage) != 0); in __put_cred()
142 BUG_ON(read_cred_subscribers(cred) != 0); in __put_cred()
143 cred->magic = CRED_MAGIC_DEAD; in __put_cred()
144 cred->put_addr = __builtin_return_address(0); in __put_cred()
146 BUG_ON(cred == current->cred); in __put_cred()
147 BUG_ON(cred == current->real_cred); in __put_cred()
149 if (cred->non_rcu) in __put_cred()
150 put_cred_rcu(&cred->rcu); in __put_cred()
152 call_rcu(&cred->rcu, put_cred_rcu); in __put_cred()
161 struct cred *cred; in exit_creds() local
163 kdebug("exit_creds(%u,%p,%p,{%d,%d})", tsk->pid, tsk->real_cred, tsk->cred, in exit_creds()
164 atomic_read(&tsk->cred->usage), in exit_creds()
165 read_cred_subscribers(tsk->cred)); in exit_creds()
167 cred = (struct cred *) tsk->real_cred; in exit_creds()
169 validate_creds(cred); in exit_creds()
170 alter_cred_subscribers(cred, -1); in exit_creds()
171 put_cred(cred); in exit_creds()
173 cred = (struct cred *) tsk->cred; in exit_creds()
174 tsk->cred = NULL; in exit_creds()
175 validate_creds(cred); in exit_creds()
176 alter_cred_subscribers(cred, -1); in exit_creds()
177 put_cred(cred); in exit_creds()
183 trace_android_vh_exit_creds(tsk, cred); in exit_creds()
196 const struct cred *get_task_cred(struct task_struct *task) in get_task_cred()
198 const struct cred *cred; in get_task_cred() local
203 cred = __task_cred((task)); in get_task_cred()
204 BUG_ON(!cred); in get_task_cred()
205 } while (!get_cred_rcu(cred)); in get_task_cred()
208 return cred; in get_task_cred()
216 struct cred *cred_alloc_blank(void) in cred_alloc_blank()
218 struct cred *new; in cred_alloc_blank()
253 struct cred *prepare_creds(void) in prepare_creds()
256 const struct cred *old; in prepare_creds()
257 struct cred *new; in prepare_creds()
267 old = task->cred; in prepare_creds()
268 memcpy(new, old, sizeof(struct cred)); in prepare_creds()
303 struct cred *prepare_exec_creds(void) in prepare_exec_creds()
305 struct cred *new; in prepare_exec_creds()
338 struct cred *new; in copy_creds()
347 !p->cred->thread_keyring && in copy_creds()
351 p->real_cred = get_cred(p->cred); in copy_creds()
352 get_cred(p->cred); in copy_creds()
353 alter_cred_subscribers(p->cred, 2); in copy_creds()
355 p->cred, atomic_read(&p->cred->usage), in copy_creds()
356 read_cred_subscribers(p->cred)); in copy_creds()
357 atomic_inc(&p->cred->user->processes); in copy_creds()
391 p->cred = p->real_cred = get_cred(new); in copy_creds()
401 static bool cred_cap_issubset(const struct cred *set, const struct cred *subset) in cred_cap_issubset()
440 int commit_creds(struct cred *new) in commit_creds()
443 const struct cred *old = task->real_cred; in commit_creds()
449 BUG_ON(task->cred != old); in commit_creds()
494 rcu_assign_pointer(task->cred, new); in commit_creds()
527 void abort_creds(struct cred *new) in abort_creds()
548 const struct cred *override_creds(const struct cred *new) in override_creds()
550 const struct cred *old = current->cred; in override_creds()
570 get_new_cred((struct cred *)new); in override_creds()
572 rcu_assign_pointer(current->cred, new); in override_creds()
590 void revert_creds(const struct cred *old) in revert_creds()
592 const struct cred *override = current->cred; in revert_creds()
601 rcu_assign_pointer(current->cred, old); in revert_creds()
622 int cred_fscmp(const struct cred *a, const struct cred *b) in cred_fscmp()
668 cred_jar = kmem_cache_create("cred_jar", sizeof(struct cred), 0, in cred_init()
688 struct cred *prepare_kernel_cred(struct task_struct *daemon) in prepare_kernel_cred()
690 const struct cred *old; in prepare_kernel_cred()
691 struct cred *new; in prepare_kernel_cred()
747 int set_security_override(struct cred *new, u32 secid) in set_security_override()
763 int set_security_override_from_ctx(struct cred *new, const char *secctx) in set_security_override_from_ctx()
785 int set_create_files_as(struct cred *new, struct inode *inode) in set_create_files_as()
797 bool creds_are_invalid(const struct cred *cred) in creds_are_invalid() argument
799 if (cred->magic != CRED_MAGIC) in creds_are_invalid()
808 static void dump_invalid_creds(const struct cred *cred, const char *label, in dump_invalid_creds() argument
812 label, cred, in dump_invalid_creds()
813 cred == &init_cred ? "[init]" : "", in dump_invalid_creds()
814 cred == tsk->real_cred ? "[real]" : "", in dump_invalid_creds()
815 cred == tsk->cred ? "[eff]" : ""); in dump_invalid_creds()
817 cred->magic, cred->put_addr); in dump_invalid_creds()
819 atomic_read(&cred->usage), in dump_invalid_creds()
820 read_cred_subscribers(cred)); in dump_invalid_creds()
822 from_kuid_munged(&init_user_ns, cred->uid), in dump_invalid_creds()
823 from_kuid_munged(&init_user_ns, cred->euid), in dump_invalid_creds()
824 from_kuid_munged(&init_user_ns, cred->suid), in dump_invalid_creds()
825 from_kuid_munged(&init_user_ns, cred->fsuid)); in dump_invalid_creds()
827 from_kgid_munged(&init_user_ns, cred->gid), in dump_invalid_creds()
828 from_kgid_munged(&init_user_ns, cred->egid), in dump_invalid_creds()
829 from_kgid_munged(&init_user_ns, cred->sgid), in dump_invalid_creds()
830 from_kgid_munged(&init_user_ns, cred->fsgid)); in dump_invalid_creds()
832 printk(KERN_ERR "CRED: ->security is %p\n", cred->security); in dump_invalid_creds()
833 if ((unsigned long) cred->security >= PAGE_SIZE && in dump_invalid_creds()
834 (((unsigned long) cred->security & 0xffffff00) != in dump_invalid_creds()
837 ((u32*)cred->security)[0], in dump_invalid_creds()
838 ((u32*)cred->security)[1]); in dump_invalid_creds()
845 void __invalid_creds(const struct cred *cred, const char *file, unsigned line) in __invalid_creds() argument
849 dump_invalid_creds(cred, "Specified", current); in __invalid_creds()
860 if (tsk->cred == tsk->real_cred) { in __validate_process_creds()
861 if (unlikely(read_cred_subscribers(tsk->cred) < 2 || in __validate_process_creds()
862 creds_are_invalid(tsk->cred))) in __validate_process_creds()
866 read_cred_subscribers(tsk->cred) < 1 || in __validate_process_creds()
868 creds_are_invalid(tsk->cred))) in __validate_process_creds()
878 if (tsk->cred != tsk->real_cred) in __validate_process_creds()
879 dump_invalid_creds(tsk->cred, "Effective", tsk); in __validate_process_creds()
892 tsk->real_cred, tsk->cred, in validate_creds_for_do_exit()
893 atomic_read(&tsk->cred->usage), in validate_creds_for_do_exit()
894 read_cred_subscribers(tsk->cred)); in validate_creds_for_do_exit()