Lines Matching refs:cred
41 struct cred init_cred = {
66 static inline void set_cred_subscribers(struct cred *cred, int n) in set_cred_subscribers() argument
69 atomic_set(&cred->subscribers, n); in set_cred_subscribers()
73 static inline int read_cred_subscribers(const struct cred *cred) in read_cred_subscribers() argument
76 return atomic_read(&cred->subscribers); in read_cred_subscribers()
82 static inline void alter_cred_subscribers(const struct cred *_cred, int n) in alter_cred_subscribers()
85 struct cred *cred = (struct cred *) _cred; in alter_cred_subscribers() local
87 atomic_add(n, &cred->subscribers); in alter_cred_subscribers()
96 struct cred *cred = container_of(rcu, struct cred, rcu); in put_cred_rcu() local
98 kdebug("put_cred_rcu(%p)", cred); in put_cred_rcu()
101 if (cred->magic != CRED_MAGIC_DEAD || in put_cred_rcu()
102 atomic_read(&cred->usage) != 0 || in put_cred_rcu()
103 read_cred_subscribers(cred) != 0) in put_cred_rcu()
106 cred, cred->magic, cred->put_addr, in put_cred_rcu()
107 atomic_read(&cred->usage), in put_cred_rcu()
108 read_cred_subscribers(cred)); in put_cred_rcu()
110 if (atomic_read(&cred->usage) != 0) in put_cred_rcu()
112 cred, atomic_read(&cred->usage)); in put_cred_rcu()
115 security_cred_free(cred); in put_cred_rcu()
116 key_put(cred->session_keyring); in put_cred_rcu()
117 key_put(cred->process_keyring); in put_cred_rcu()
118 key_put(cred->thread_keyring); in put_cred_rcu()
119 key_put(cred->request_key_auth); in put_cred_rcu()
120 if (cred->group_info) in put_cred_rcu()
121 put_group_info(cred->group_info); in put_cred_rcu()
122 free_uid(cred->user); in put_cred_rcu()
123 if (cred->ucounts) in put_cred_rcu()
124 put_ucounts(cred->ucounts); in put_cred_rcu()
125 put_user_ns(cred->user_ns); in put_cred_rcu()
126 kmem_cache_free(cred_jar, cred); in put_cred_rcu()
135 void __put_cred(struct cred *cred) in __put_cred() argument
137 kdebug("__put_cred(%p{%d,%d})", cred, in __put_cred()
138 atomic_read(&cred->usage), in __put_cred()
139 read_cred_subscribers(cred)); in __put_cred()
141 BUG_ON(atomic_read(&cred->usage) != 0); in __put_cred()
143 BUG_ON(read_cred_subscribers(cred) != 0); in __put_cred()
144 cred->magic = CRED_MAGIC_DEAD; in __put_cred()
145 cred->put_addr = __builtin_return_address(0); in __put_cred()
147 BUG_ON(cred == current->cred); in __put_cred()
148 BUG_ON(cred == current->real_cred); in __put_cred()
150 if (cred->non_rcu) in __put_cred()
151 put_cred_rcu(&cred->rcu); in __put_cred()
153 call_rcu(&cred->rcu, put_cred_rcu); in __put_cred()
162 struct cred *cred; in exit_creds() local
164 kdebug("exit_creds(%u,%p,%p,{%d,%d})", tsk->pid, tsk->real_cred, tsk->cred, in exit_creds()
165 atomic_read(&tsk->cred->usage), in exit_creds()
166 read_cred_subscribers(tsk->cred)); in exit_creds()
168 cred = (struct cred *) tsk->real_cred; in exit_creds()
170 validate_creds(cred); in exit_creds()
171 alter_cred_subscribers(cred, -1); in exit_creds()
172 put_cred(cred); in exit_creds()
174 cred = (struct cred *) tsk->cred; in exit_creds()
175 tsk->cred = NULL; in exit_creds()
176 validate_creds(cred); in exit_creds()
177 alter_cred_subscribers(cred, -1); in exit_creds()
178 put_cred(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()
252 struct cred *prepare_creds(void) in prepare_creds()
255 const struct cred *old; in prepare_creds()
256 struct cred *new; in prepare_creds()
266 old = task->cred; in prepare_creds()
267 memcpy(new, old, sizeof(struct cred)); in prepare_creds()
307 struct cred *prepare_exec_creds(void) in prepare_exec_creds()
309 struct cred *new; in prepare_exec_creds()
342 struct cred *new; in copy_creds()
351 !p->cred->thread_keyring && in copy_creds()
355 p->real_cred = get_cred(p->cred); in copy_creds()
356 get_cred(p->cred); in copy_creds()
357 alter_cred_subscribers(p->cred, 2); in copy_creds()
359 p->cred, atomic_read(&p->cred->usage), in copy_creds()
360 read_cred_subscribers(p->cred)); in copy_creds()
397 p->cred = p->real_cred = get_cred(new); in copy_creds()
408 static bool cred_cap_issubset(const struct cred *set, const struct cred *subset) in cred_cap_issubset()
447 int commit_creds(struct cred *new) in commit_creds()
450 const struct cred *old = task->real_cred; in commit_creds()
456 BUG_ON(task->cred != old); in commit_creds()
501 rcu_assign_pointer(task->cred, new); in commit_creds()
533 void abort_creds(struct cred *new) in abort_creds()
554 const struct cred *override_creds(const struct cred *new) in override_creds()
556 const struct cred *old = current->cred; in override_creds()
576 get_new_cred((struct cred *)new); in override_creds()
578 rcu_assign_pointer(current->cred, new); in override_creds()
595 void revert_creds(const struct cred *old) in revert_creds()
597 const struct cred *override = current->cred; in revert_creds()
606 rcu_assign_pointer(current->cred, old); in revert_creds()
626 int cred_fscmp(const struct cred *a, const struct cred *b) in cred_fscmp()
666 int set_cred_ucounts(struct cred *new) in set_cred_ucounts()
692 cred_jar = kmem_cache_create("cred_jar", sizeof(struct cred), 0, in cred_init()
712 struct cred *prepare_kernel_cred(struct task_struct *daemon) in prepare_kernel_cred()
714 const struct cred *old; in prepare_kernel_cred()
715 struct cred *new; in prepare_kernel_cred()
774 int set_security_override(struct cred *new, u32 secid) in set_security_override()
790 int set_security_override_from_ctx(struct cred *new, const char *secctx) in set_security_override_from_ctx()
812 int set_create_files_as(struct cred *new, struct inode *inode) in set_create_files_as()
824 bool creds_are_invalid(const struct cred *cred) in creds_are_invalid() argument
826 if (cred->magic != CRED_MAGIC) in creds_are_invalid()
835 static void dump_invalid_creds(const struct cred *cred, const char *label, in dump_invalid_creds() argument
839 label, cred, in dump_invalid_creds()
840 cred == &init_cred ? "[init]" : "", in dump_invalid_creds()
841 cred == tsk->real_cred ? "[real]" : "", in dump_invalid_creds()
842 cred == tsk->cred ? "[eff]" : ""); in dump_invalid_creds()
844 cred->magic, cred->put_addr); in dump_invalid_creds()
846 atomic_read(&cred->usage), in dump_invalid_creds()
847 read_cred_subscribers(cred)); in dump_invalid_creds()
849 from_kuid_munged(&init_user_ns, cred->uid), in dump_invalid_creds()
850 from_kuid_munged(&init_user_ns, cred->euid), in dump_invalid_creds()
851 from_kuid_munged(&init_user_ns, cred->suid), in dump_invalid_creds()
852 from_kuid_munged(&init_user_ns, cred->fsuid)); in dump_invalid_creds()
854 from_kgid_munged(&init_user_ns, cred->gid), in dump_invalid_creds()
855 from_kgid_munged(&init_user_ns, cred->egid), in dump_invalid_creds()
856 from_kgid_munged(&init_user_ns, cred->sgid), in dump_invalid_creds()
857 from_kgid_munged(&init_user_ns, cred->fsgid)); in dump_invalid_creds()
859 printk(KERN_ERR "CRED: ->security is %p\n", cred->security); in dump_invalid_creds()
860 if ((unsigned long) cred->security >= PAGE_SIZE && in dump_invalid_creds()
861 (((unsigned long) cred->security & 0xffffff00) != in dump_invalid_creds()
864 ((u32*)cred->security)[0], in dump_invalid_creds()
865 ((u32*)cred->security)[1]); in dump_invalid_creds()
872 void __noreturn __invalid_creds(const struct cred *cred, const char *file, unsigned line) in __invalid_creds() argument
876 dump_invalid_creds(cred, "Specified", current); in __invalid_creds()
887 if (tsk->cred == tsk->real_cred) { in __validate_process_creds()
888 if (unlikely(read_cred_subscribers(tsk->cred) < 2 || in __validate_process_creds()
889 creds_are_invalid(tsk->cred))) in __validate_process_creds()
893 read_cred_subscribers(tsk->cred) < 1 || in __validate_process_creds()
895 creds_are_invalid(tsk->cred))) in __validate_process_creds()
905 if (tsk->cred != tsk->real_cred) in __validate_process_creds()
906 dump_invalid_creds(tsk->cred, "Effective", tsk); in __validate_process_creds()
919 tsk->real_cred, tsk->cred, in validate_creds_for_do_exit()
920 atomic_read(&tsk->cred->usage), in validate_creds_for_do_exit()
921 read_cred_subscribers(tsk->cred)); in validate_creds_for_do_exit()