Lines Matching refs:cred
41 struct cred init_cred = {
65 static inline void set_cred_subscribers(struct cred *cred, int n) in set_cred_subscribers() argument
68 atomic_set(&cred->subscribers, n); in set_cred_subscribers()
72 static inline int read_cred_subscribers(const struct cred *cred) in read_cred_subscribers() argument
75 return atomic_read(&cred->subscribers); in read_cred_subscribers()
81 static inline void alter_cred_subscribers(const struct cred *_cred, int n) in alter_cred_subscribers()
84 struct cred *cred = (struct cred *) _cred; in alter_cred_subscribers() local
86 atomic_add(n, &cred->subscribers); in alter_cred_subscribers()
95 struct cred *cred = container_of(rcu, struct cred, rcu); in put_cred_rcu() local
97 kdebug("put_cred_rcu(%p)", cred); in put_cred_rcu()
100 if (cred->magic != CRED_MAGIC_DEAD || in put_cred_rcu()
101 atomic_read(&cred->usage) != 0 || in put_cred_rcu()
102 read_cred_subscribers(cred) != 0) in put_cred_rcu()
105 cred, cred->magic, cred->put_addr, in put_cred_rcu()
106 atomic_read(&cred->usage), in put_cred_rcu()
107 read_cred_subscribers(cred)); in put_cred_rcu()
109 if (atomic_read(&cred->usage) != 0) in put_cred_rcu()
111 cred, atomic_read(&cred->usage)); in put_cred_rcu()
114 security_cred_free(cred); in put_cred_rcu()
115 key_put(cred->session_keyring); in put_cred_rcu()
116 key_put(cred->process_keyring); in put_cred_rcu()
117 key_put(cred->thread_keyring); in put_cred_rcu()
118 key_put(cred->request_key_auth); in put_cred_rcu()
119 if (cred->group_info) in put_cred_rcu()
120 put_group_info(cred->group_info); in put_cred_rcu()
121 free_uid(cred->user); in put_cred_rcu()
122 put_user_ns(cred->user_ns); in put_cred_rcu()
123 kmem_cache_free(cred_jar, cred); in put_cred_rcu()
132 void __put_cred(struct cred *cred) in __put_cred() argument
134 kdebug("__put_cred(%p{%d,%d})", cred, in __put_cred()
135 atomic_read(&cred->usage), in __put_cred()
136 read_cred_subscribers(cred)); in __put_cred()
138 BUG_ON(atomic_read(&cred->usage) != 0); in __put_cred()
140 BUG_ON(read_cred_subscribers(cred) != 0); in __put_cred()
141 cred->magic = CRED_MAGIC_DEAD; in __put_cred()
142 cred->put_addr = __builtin_return_address(0); in __put_cred()
144 BUG_ON(cred == current->cred); in __put_cred()
145 BUG_ON(cred == current->real_cred); in __put_cred()
147 if (cred->non_rcu) in __put_cred()
148 put_cred_rcu(&cred->rcu); in __put_cred()
150 call_rcu(&cred->rcu, put_cred_rcu); in __put_cred()
159 struct cred *cred; in exit_creds() local
161 kdebug("exit_creds(%u,%p,%p,{%d,%d})", tsk->pid, tsk->real_cred, tsk->cred, in exit_creds()
162 atomic_read(&tsk->cred->usage), in exit_creds()
163 read_cred_subscribers(tsk->cred)); in exit_creds()
165 cred = (struct cred *) tsk->real_cred; in exit_creds()
167 validate_creds(cred); in exit_creds()
168 alter_cred_subscribers(cred, -1); in exit_creds()
169 put_cred(cred); in exit_creds()
171 cred = (struct cred *) tsk->cred; in exit_creds()
172 tsk->cred = NULL; in exit_creds()
173 validate_creds(cred); in exit_creds()
174 alter_cred_subscribers(cred, -1); in exit_creds()
175 put_cred(cred); in exit_creds()
193 const struct cred *get_task_cred(struct task_struct *task) in get_task_cred()
195 const struct cred *cred; in get_task_cred() local
200 cred = __task_cred((task)); in get_task_cred()
201 BUG_ON(!cred); in get_task_cred()
202 } while (!get_cred_rcu(cred)); in get_task_cred()
205 return cred; in get_task_cred()
213 struct cred *cred_alloc_blank(void) in cred_alloc_blank()
215 struct cred *new; in cred_alloc_blank()
250 struct cred *prepare_creds(void) in prepare_creds()
253 const struct cred *old; in prepare_creds()
254 struct cred *new; in prepare_creds()
264 old = task->cred; in prepare_creds()
265 memcpy(new, old, sizeof(struct cred)); in prepare_creds()
300 struct cred *prepare_exec_creds(void) in prepare_exec_creds()
302 struct cred *new; in prepare_exec_creds()
332 struct cred *new; in copy_creds()
341 !p->cred->thread_keyring && in copy_creds()
345 p->real_cred = get_cred(p->cred); in copy_creds()
346 get_cred(p->cred); in copy_creds()
347 alter_cred_subscribers(p->cred, 2); in copy_creds()
349 p->cred, atomic_read(&p->cred->usage), in copy_creds()
350 read_cred_subscribers(p->cred)); in copy_creds()
351 atomic_inc(&p->cred->user->processes); in copy_creds()
385 p->cred = p->real_cred = get_cred(new); in copy_creds()
395 static bool cred_cap_issubset(const struct cred *set, const struct cred *subset) in cred_cap_issubset()
434 int commit_creds(struct cred *new) in commit_creds()
437 const struct cred *old = task->real_cred; in commit_creds()
443 BUG_ON(task->cred != old); in commit_creds()
488 rcu_assign_pointer(task->cred, new); in commit_creds()
520 void abort_creds(struct cred *new) in abort_creds()
541 const struct cred *override_creds(const struct cred *new) in override_creds()
543 const struct cred *old = current->cred; in override_creds()
563 get_new_cred((struct cred *)new); in override_creds()
565 rcu_assign_pointer(current->cred, new); in override_creds()
582 void revert_creds(const struct cred *old) in revert_creds()
584 const struct cred *override = current->cred; in revert_creds()
593 rcu_assign_pointer(current->cred, old); in revert_creds()
613 int cred_fscmp(const struct cred *a, const struct cred *b) in cred_fscmp()
659 cred_jar = kmem_cache_create("cred_jar", sizeof(struct cred), 0, in cred_init()
681 struct cred *prepare_kernel_cred(struct task_struct *daemon) in prepare_kernel_cred()
683 const struct cred *old; in prepare_kernel_cred()
684 struct cred *new; in prepare_kernel_cred()
740 int set_security_override(struct cred *new, u32 secid) in set_security_override()
756 int set_security_override_from_ctx(struct cred *new, const char *secctx) in set_security_override_from_ctx()
778 int set_create_files_as(struct cred *new, struct inode *inode) in set_create_files_as()
790 bool creds_are_invalid(const struct cred *cred) in creds_are_invalid() argument
792 if (cred->magic != CRED_MAGIC) in creds_are_invalid()
801 static void dump_invalid_creds(const struct cred *cred, const char *label, in dump_invalid_creds() argument
805 label, cred, in dump_invalid_creds()
806 cred == &init_cred ? "[init]" : "", in dump_invalid_creds()
807 cred == tsk->real_cred ? "[real]" : "", in dump_invalid_creds()
808 cred == tsk->cred ? "[eff]" : ""); in dump_invalid_creds()
810 cred->magic, cred->put_addr); in dump_invalid_creds()
812 atomic_read(&cred->usage), in dump_invalid_creds()
813 read_cred_subscribers(cred)); in dump_invalid_creds()
815 from_kuid_munged(&init_user_ns, cred->uid), in dump_invalid_creds()
816 from_kuid_munged(&init_user_ns, cred->euid), in dump_invalid_creds()
817 from_kuid_munged(&init_user_ns, cred->suid), in dump_invalid_creds()
818 from_kuid_munged(&init_user_ns, cred->fsuid)); in dump_invalid_creds()
820 from_kgid_munged(&init_user_ns, cred->gid), in dump_invalid_creds()
821 from_kgid_munged(&init_user_ns, cred->egid), in dump_invalid_creds()
822 from_kgid_munged(&init_user_ns, cred->sgid), in dump_invalid_creds()
823 from_kgid_munged(&init_user_ns, cred->fsgid)); in dump_invalid_creds()
825 printk(KERN_ERR "CRED: ->security is %p\n", cred->security); in dump_invalid_creds()
826 if ((unsigned long) cred->security >= PAGE_SIZE && in dump_invalid_creds()
827 (((unsigned long) cred->security & 0xffffff00) != in dump_invalid_creds()
830 ((u32*)cred->security)[0], in dump_invalid_creds()
831 ((u32*)cred->security)[1]); in dump_invalid_creds()
838 void __invalid_creds(const struct cred *cred, const char *file, unsigned line) in __invalid_creds() argument
842 dump_invalid_creds(cred, "Specified", current); in __invalid_creds()
853 if (tsk->cred == tsk->real_cred) { in __validate_process_creds()
854 if (unlikely(read_cred_subscribers(tsk->cred) < 2 || in __validate_process_creds()
855 creds_are_invalid(tsk->cred))) in __validate_process_creds()
859 read_cred_subscribers(tsk->cred) < 1 || in __validate_process_creds()
861 creds_are_invalid(tsk->cred))) in __validate_process_creds()
871 if (tsk->cred != tsk->real_cred) in __validate_process_creds()
872 dump_invalid_creds(tsk->cred, "Effective", tsk); in __validate_process_creds()
885 tsk->real_cred, tsk->cred, in validate_creds_for_do_exit()
886 atomic_read(&tsk->cred->usage), in validate_creds_for_do_exit()
887 read_cred_subscribers(tsk->cred)); in validate_creds_for_do_exit()