1 |
/* |
/* |
2 |
* security/ccsecurity/policy_io.c |
* security/ccsecurity/policy_io.c |
3 |
* |
* |
4 |
* Copyright (C) 2005-2010 NTT DATA CORPORATION |
* Copyright (C) 2005-2011 NTT DATA CORPORATION |
5 |
* |
* |
6 |
* Version: 1.8.0+ 2010/12/31 |
* Version: 1.8.3-pre 2011/09/16 |
7 |
*/ |
*/ |
8 |
|
|
9 |
#include "internal.h" |
#include "internal.h" |
79 |
for (pos = pos ? pos : srcu_dereference((head)->next, &ccs_ss); \ |
for (pos = pos ? pos : srcu_dereference((head)->next, &ccs_ss); \ |
80 |
pos != (head); pos = srcu_dereference(pos->next, &ccs_ss)) |
pos != (head); pos = srcu_dereference(pos->next, &ccs_ss)) |
81 |
|
|
|
|
|
|
/* Profile version. Currently only 20100903 is defined. */ |
|
|
static unsigned int ccs_profile_version; |
|
|
|
|
|
/* Profile table. Memory is allocated as needed. */ |
|
|
static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
|
|
|
|
82 |
/* String table for operation mode. */ |
/* String table for operation mode. */ |
83 |
const char * const ccs_mode[CCS_CONFIG_MAX_MODE] = { |
const char * const ccs_mode[CCS_CONFIG_MAX_MODE] = { |
84 |
[CCS_CONFIG_DISABLED] = "disabled", |
[CCS_CONFIG_DISABLED] = "disabled", |
174 |
[CCS_TYPE_UMOUNT] = "unmount", |
[CCS_TYPE_UMOUNT] = "unmount", |
175 |
}; |
}; |
176 |
|
|
177 |
|
/* String table for socket's operation. */ |
178 |
|
const char * const ccs_socket_keyword[CCS_MAX_NETWORK_OPERATION] = { |
179 |
|
[CCS_NETWORK_BIND] = "bind", |
180 |
|
[CCS_NETWORK_LISTEN] = "listen", |
181 |
|
[CCS_NETWORK_CONNECT] = "connect", |
182 |
|
[CCS_NETWORK_ACCEPT] = "accept", |
183 |
|
[CCS_NETWORK_SEND] = "send", |
184 |
|
[CCS_NETWORK_RECV] = "recv", |
185 |
|
}; |
186 |
|
|
187 |
/* String table for categories. */ |
/* String table for categories. */ |
188 |
static const char * const ccs_category_keywords[CCS_MAX_MAC_CATEGORY_INDEX] = { |
static const char * const ccs_category_keywords[CCS_MAX_MAC_CATEGORY_INDEX] = { |
189 |
[CCS_MAC_CATEGORY_FILE] = "file", |
[CCS_MAC_CATEGORY_FILE] = "file", |
280 |
return value ? "yes" : "no"; |
return value ? "yes" : "no"; |
281 |
} |
} |
282 |
|
|
283 |
/* Prototype fpr ccs_addprintf(). */ |
/* Prototype for ccs_addprintf(). */ |
284 |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
285 |
__attribute__ ((format(printf, 3, 4))); |
__attribute__ ((format(printf, 3, 4))); |
286 |
|
|
313 |
{ |
{ |
314 |
while (head->r.w_pos) { |
while (head->r.w_pos) { |
315 |
const char *w = head->r.w[0]; |
const char *w = head->r.w[0]; |
316 |
int len = strlen(w); |
size_t len = strlen(w); |
317 |
if (len) { |
if (len) { |
318 |
if (len > head->read_user_buf_avail) |
if (len > head->read_user_buf_avail) |
319 |
len = head->read_user_buf_avail; |
len = head->read_user_buf_avail; |
325 |
head->read_user_buf += len; |
head->read_user_buf += len; |
326 |
w += len; |
w += len; |
327 |
} |
} |
328 |
if (*w) { |
head->r.w[0] = w; |
329 |
head->r.w[0] = w; |
if (*w) |
330 |
return false; |
return false; |
|
} |
|
331 |
/* Add '\0' for audit logs and query. */ |
/* Add '\0' for audit logs and query. */ |
332 |
if (head->poll) { |
if (head->type == CCS_AUDIT || head->type == CCS_QUERY) { |
333 |
if (!head->read_user_buf_avail || |
if (!head->read_user_buf_avail || |
334 |
copy_to_user(head->read_user_buf, "", 1)) |
copy_to_user(head->read_user_buf, "", 1)) |
335 |
return false; |
return false; |
365 |
printk(KERN_WARNING "Too many words in a line.\n"); |
printk(KERN_WARNING "Too many words in a line.\n"); |
366 |
} |
} |
367 |
|
|
368 |
|
/* Prototype for ccs_io_printf(). */ |
369 |
|
static void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
370 |
|
__attribute__ ((format(printf, 2, 3))); |
371 |
|
|
372 |
/** |
/** |
373 |
* ccs_io_printf - printf() to "struct ccs_io_buffer" structure. |
* ccs_io_printf - printf() to "struct ccs_io_buffer" structure. |
374 |
* |
* |
377 |
* |
* |
378 |
* Returns nothing. |
* Returns nothing. |
379 |
*/ |
*/ |
380 |
void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
static void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
381 |
{ |
{ |
382 |
va_list args; |
va_list args; |
383 |
int len; |
size_t len; |
384 |
int pos = head->r.avail; |
size_t pos = head->r.avail; |
385 |
int size = head->readbuf_size - pos; |
int size = head->readbuf_size - pos; |
386 |
if (size <= 0) |
if (size <= 0) |
387 |
return; |
return; |
422 |
} |
} |
423 |
|
|
424 |
/** |
/** |
425 |
|
* ccs_set_slash - Put a shash to "struct ccs_io_buffer" structure. |
426 |
|
* |
427 |
|
* @head: Pointer to "struct ccs_io_buffer". |
428 |
|
* |
429 |
|
* Returns nothing. |
430 |
|
*/ |
431 |
|
static void ccs_set_slash(struct ccs_io_buffer *head) |
432 |
|
{ |
433 |
|
ccs_set_string(head, "/"); |
434 |
|
} |
435 |
|
|
436 |
|
/* List of namespaces. */ |
437 |
|
LIST_HEAD(ccs_namespace_list); |
438 |
|
/* True if namespace other than ccs_kernel_namespace is defined. */ |
439 |
|
static bool ccs_namespace_enabled; |
440 |
|
|
441 |
|
/** |
442 |
|
* ccs_init_policy_namespace - Initialize namespace. |
443 |
|
* |
444 |
|
* @ns: Pointer to "struct ccs_policy_namespace". |
445 |
|
* |
446 |
|
* Returns nothing. |
447 |
|
*/ |
448 |
|
void ccs_init_policy_namespace(struct ccs_policy_namespace *ns) |
449 |
|
{ |
450 |
|
unsigned int idx; |
451 |
|
for (idx = 0; idx < CCS_MAX_ACL_GROUPS; idx++) |
452 |
|
INIT_LIST_HEAD(&ns->acl_group[idx]); |
453 |
|
for (idx = 0; idx < CCS_MAX_GROUP; idx++) |
454 |
|
INIT_LIST_HEAD(&ns->group_list[idx]); |
455 |
|
for (idx = 0; idx < CCS_MAX_POLICY; idx++) |
456 |
|
INIT_LIST_HEAD(&ns->policy_list[idx]); |
457 |
|
ns->profile_version = 20100903; |
458 |
|
ccs_namespace_enabled = !list_empty(&ccs_namespace_list); |
459 |
|
list_add_tail_rcu(&ns->namespace_list, &ccs_namespace_list); |
460 |
|
} |
461 |
|
|
462 |
|
/** |
463 |
|
* ccs_print_namespace - Print namespace header. |
464 |
|
* |
465 |
|
* @head: Pointer to "struct ccs_io_buffer". |
466 |
|
* |
467 |
|
* Returns nothing. |
468 |
|
*/ |
469 |
|
static void ccs_print_namespace(struct ccs_io_buffer *head) |
470 |
|
{ |
471 |
|
if (!ccs_namespace_enabled) |
472 |
|
return; |
473 |
|
ccs_set_string(head, |
474 |
|
container_of(head->r.ns, struct ccs_policy_namespace, |
475 |
|
namespace_list)->name); |
476 |
|
ccs_set_space(head); |
477 |
|
} |
478 |
|
|
479 |
|
/** |
480 |
* ccs_assign_profile - Create a new profile. |
* ccs_assign_profile - Create a new profile. |
481 |
* |
* |
482 |
|
* @ns: Pointer to "struct ccs_policy_namespace". |
483 |
* @profile: Profile number to create. |
* @profile: Profile number to create. |
484 |
* |
* |
485 |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
486 |
*/ |
*/ |
487 |
static struct ccs_profile *ccs_assign_profile(const unsigned int profile) |
static struct ccs_profile *ccs_assign_profile(struct ccs_policy_namespace *ns, |
488 |
|
const unsigned int profile) |
489 |
{ |
{ |
490 |
struct ccs_profile *ptr; |
struct ccs_profile *ptr; |
491 |
struct ccs_profile *entry; |
struct ccs_profile *entry; |
492 |
if (profile >= CCS_MAX_PROFILES) |
if (profile >= CCS_MAX_PROFILES) |
493 |
return NULL; |
return NULL; |
494 |
ptr = ccs_profile_ptr[profile]; |
ptr = ns->profile_ptr[profile]; |
495 |
if (ptr) |
if (ptr) |
496 |
return ptr; |
return ptr; |
497 |
entry = kzalloc(sizeof(*entry), CCS_GFP_FLAGS); |
entry = kzalloc(sizeof(*entry), CCS_GFP_FLAGS); |
498 |
if (mutex_lock_interruptible(&ccs_policy_lock)) |
if (mutex_lock_interruptible(&ccs_policy_lock)) |
499 |
goto out; |
goto out; |
500 |
ptr = ccs_profile_ptr[profile]; |
ptr = ns->profile_ptr[profile]; |
501 |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
ccs_set_memory_size(sizeof(*entry)); |
502 |
|
if (!ptr && ccs_memory_ok(entry)) { |
503 |
ptr = entry; |
ptr = entry; |
504 |
ptr->default_config = CCS_CONFIG_DISABLED | |
ptr->default_config = CCS_CONFIG_DISABLED | |
505 |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
510 |
ptr->pref[CCS_PREF_MAX_LEARNING_ENTRY] = |
ptr->pref[CCS_PREF_MAX_LEARNING_ENTRY] = |
511 |
CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY; |
CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY; |
512 |
mb(); /* Avoid out-of-order execution. */ |
mb(); /* Avoid out-of-order execution. */ |
513 |
ccs_profile_ptr[profile] = ptr; |
ns->profile_ptr[profile] = ptr; |
514 |
entry = NULL; |
entry = NULL; |
515 |
} |
} |
516 |
mutex_unlock(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
529 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
530 |
const int idx = ccs_read_lock(); |
const int idx = ccs_read_lock(); |
531 |
ccs_policy_loaded = true; |
ccs_policy_loaded = true; |
532 |
|
printk(KERN_INFO "CCSecurity: 1.8.3-pre 2011/09/16\n"); |
533 |
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
534 |
const u8 profile = domain->profile; |
const u8 profile = domain->profile; |
535 |
if (ccs_profile_ptr[profile]) |
const struct ccs_policy_namespace *ns = domain->ns; |
536 |
|
if (ns->profile_version != 20100903) |
537 |
|
printk(KERN_ERR |
538 |
|
"Profile version %u is not supported.\n", |
539 |
|
ns->profile_version); |
540 |
|
else if (!ns->profile_ptr[profile]) |
541 |
|
printk(KERN_ERR |
542 |
|
"Profile %u (used by '%s') is not defined.\n", |
543 |
|
profile, domain->domainname->name); |
544 |
|
else |
545 |
continue; |
continue; |
546 |
printk(KERN_ERR "Profile %u must be defined before using it.\n", |
printk(KERN_ERR |
547 |
profile); |
"Userland tools for TOMOYO 1.8 must be installed and " |
548 |
|
"policy must be initialized.\n"); |
549 |
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
550 |
"for more information.\n"); |
"for more information.\n"); |
551 |
panic("Profile %u (used by '%s') not defined.\n", |
panic("STOP!"); |
|
profile, domain->domainname->name); |
|
552 |
} |
} |
553 |
ccs_read_unlock(idx); |
ccs_read_unlock(idx); |
|
if (ccs_profile_version != 20100903) { |
|
|
printk(KERN_ERR "Userland tools must be installed for " |
|
|
"TOMOYO 1.8, and policy must be initialized.\n"); |
|
|
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
|
|
"for more information.\n"); |
|
|
panic("Profile version %u is not supported.\n", |
|
|
ccs_profile_version); |
|
|
} |
|
|
printk(KERN_INFO "CCSecurity: 1.8.0+ 2010/12/31\n"); |
|
554 |
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
555 |
} |
} |
556 |
|
|
564 |
struct ccs_profile *ccs_profile(const u8 profile) |
struct ccs_profile *ccs_profile(const u8 profile) |
565 |
{ |
{ |
566 |
static struct ccs_profile ccs_null_profile; |
static struct ccs_profile ccs_null_profile; |
567 |
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
struct ccs_profile *ptr = ccs_current_namespace()-> |
568 |
|
profile_ptr[profile]; |
569 |
if (!ptr) |
if (!ptr) |
570 |
ptr = &ccs_null_profile; |
ptr = &ccs_null_profile; |
571 |
return ptr; |
return ptr; |
699 |
unsigned int i; |
unsigned int i; |
700 |
char *cp; |
char *cp; |
701 |
struct ccs_profile *profile; |
struct ccs_profile *profile; |
702 |
if (sscanf(data, "PROFILE_VERSION=%u", &ccs_profile_version) == 1) |
if (sscanf(data, "PROFILE_VERSION=%u", &head->w.ns->profile_version) |
703 |
|
== 1) |
704 |
return 0; |
return 0; |
705 |
i = simple_strtoul(data, &cp, 10); |
i = simple_strtoul(data, &cp, 10); |
706 |
if (*cp != '-') |
if (*cp != '-') |
707 |
return -EINVAL; |
return -EINVAL; |
708 |
data = cp + 1; |
data = cp + 1; |
709 |
profile = ccs_assign_profile(i); |
profile = ccs_assign_profile(head->w.ns, i); |
710 |
if (!profile) |
if (!profile) |
711 |
return -EINVAL; |
return -EINVAL; |
712 |
cp = strchr(data, '='); |
cp = strchr(data, '='); |
714 |
return -EINVAL; |
return -EINVAL; |
715 |
*cp++ = '\0'; |
*cp++ = '\0'; |
716 |
if (!strcmp(data, "COMMENT")) { |
if (!strcmp(data, "COMMENT")) { |
717 |
const struct ccs_path_info *old_comment = profile->comment; |
static DEFINE_SPINLOCK(lock); |
718 |
profile->comment = ccs_get_name(cp); |
const struct ccs_path_info *new_comment = ccs_get_name(cp); |
719 |
|
const struct ccs_path_info *old_comment; |
720 |
|
if (!new_comment) |
721 |
|
return -ENOMEM; |
722 |
|
spin_lock(&lock); |
723 |
|
old_comment = profile->comment; |
724 |
|
profile->comment = new_comment; |
725 |
|
spin_unlock(&lock); |
726 |
ccs_put_name(old_comment); |
ccs_put_name(old_comment); |
727 |
return 0; |
return 0; |
728 |
} |
} |
763 |
static void ccs_read_profile(struct ccs_io_buffer *head) |
static void ccs_read_profile(struct ccs_io_buffer *head) |
764 |
{ |
{ |
765 |
u8 index; |
u8 index; |
766 |
|
struct ccs_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), |
767 |
|
namespace_list); |
768 |
const struct ccs_profile *profile; |
const struct ccs_profile *profile; |
769 |
|
if (head->r.eof) |
770 |
|
return; |
771 |
next: |
next: |
772 |
index = head->r.index; |
index = head->r.index; |
773 |
profile = ccs_profile_ptr[index]; |
profile = ns->profile_ptr[index]; |
774 |
switch (head->r.step) { |
switch (head->r.step) { |
775 |
case 0: |
case 0: |
776 |
ccs_io_printf(head, "PROFILE_VERSION=%s\n", "20100903"); |
ccs_print_namespace(head); |
777 |
|
ccs_io_printf(head, "PROFILE_VERSION=%u\n", |
778 |
|
ns->profile_version); |
779 |
head->r.step++; |
head->r.step++; |
780 |
break; |
break; |
781 |
case 1: |
case 1: |
782 |
for ( ; head->r.index < CCS_MAX_PROFILES; |
for ( ; head->r.index < CCS_MAX_PROFILES; head->r.index++) |
783 |
head->r.index++) |
if (ns->profile_ptr[head->r.index]) |
|
if (ccs_profile_ptr[head->r.index]) |
|
784 |
break; |
break; |
785 |
if (head->r.index == CCS_MAX_PROFILES) |
if (head->r.index == CCS_MAX_PROFILES) { |
786 |
|
head->r.eof = true; |
787 |
return; |
return; |
788 |
|
} |
789 |
head->r.step++; |
head->r.step++; |
790 |
break; |
break; |
791 |
case 2: |
case 2: |
792 |
{ |
{ |
793 |
u8 i; |
u8 i; |
794 |
const struct ccs_path_info *comment = profile->comment; |
const struct ccs_path_info *comment = profile->comment; |
795 |
|
ccs_print_namespace(head); |
796 |
ccs_io_printf(head, "%u-COMMENT=", index); |
ccs_io_printf(head, "%u-COMMENT=", index); |
797 |
ccs_set_string(head, comment ? comment->name : ""); |
ccs_set_string(head, comment ? comment->name : ""); |
798 |
ccs_set_lf(head); |
ccs_set_lf(head); |
799 |
|
ccs_print_namespace(head); |
800 |
ccs_io_printf(head, "%u-PREFERENCE={ ", index); |
ccs_io_printf(head, "%u-PREFERENCE={ ", index); |
801 |
for (i = 0; i < CCS_MAX_PREF; i++) |
for (i = 0; i < CCS_MAX_PREF; i++) |
802 |
ccs_io_printf(head, "%s=%u ", |
ccs_io_printf(head, "%s=%u ", |
803 |
ccs_pref_keywords[i], |
ccs_pref_keywords[i], |
804 |
profile->pref[i]); |
profile->pref[i]); |
805 |
ccs_set_string(head, " }\n"); |
ccs_set_string(head, "}\n"); |
806 |
head->r.step++; |
head->r.step++; |
807 |
} |
} |
808 |
break; |
break; |
809 |
case 3: |
case 3: |
810 |
{ |
{ |
811 |
|
ccs_print_namespace(head); |
812 |
ccs_io_printf(head, "%u-%s", index, "CONFIG"); |
ccs_io_printf(head, "%u-%s", index, "CONFIG"); |
813 |
ccs_print_config(head, profile->default_config); |
ccs_print_config(head, profile->default_config); |
814 |
head->r.bit = 0; |
head->r.bit = 0; |
822 |
const u8 config = profile->config[i]; |
const u8 config = profile->config[i]; |
823 |
if (config == CCS_CONFIG_USE_DEFAULT) |
if (config == CCS_CONFIG_USE_DEFAULT) |
824 |
continue; |
continue; |
825 |
|
ccs_print_namespace(head); |
826 |
if (i < CCS_MAX_MAC_INDEX) |
if (i < CCS_MAX_MAC_INDEX) |
827 |
ccs_io_printf(head, "%u-CONFIG::%s::%s", index, |
ccs_io_printf(head, "%u-CONFIG::%s::%s", index, |
828 |
ccs_category_keywords |
ccs_category_keywords |
869 |
* |
* |
870 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
871 |
*/ |
*/ |
872 |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
static inline int ccs_update_manager_entry(const char *manager, |
873 |
|
const bool is_delete) |
874 |
{ |
{ |
875 |
struct ccs_manager e = { }; |
struct ccs_manager e = { }; |
876 |
|
struct ccs_acl_param param = { |
877 |
|
/* .ns = &ccs_kernel_namespace, */ |
878 |
|
.is_delete = is_delete, |
879 |
|
.list = &ccs_kernel_namespace.policy_list[CCS_ID_MANAGER], |
880 |
|
}; |
881 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
882 |
if (ccs_domain_def(manager)) { |
if (ccs_domain_def(manager)) { |
883 |
if (!ccs_correct_domain(manager)) |
if (!ccs_correct_domain(manager)) |
888 |
return -EINVAL; |
return -EINVAL; |
889 |
} |
} |
890 |
e.manager = ccs_get_name(manager); |
e.manager = ccs_get_name(manager); |
891 |
if (!e.manager) |
if (e.manager) { |
892 |
return error; |
error = ccs_update_policy(&e.head, sizeof(e), ¶m, |
893 |
error = ccs_update_policy(&e.head, sizeof(e), is_delete, |
ccs_same_manager); |
894 |
&ccs_policy_list[CCS_ID_MANAGER], |
ccs_put_name(e.manager); |
895 |
ccs_same_manager); |
} |
|
ccs_put_name(e.manager); |
|
896 |
return error; |
return error; |
897 |
} |
} |
898 |
|
|
905 |
*/ |
*/ |
906 |
static int ccs_write_manager(struct ccs_io_buffer *head) |
static int ccs_write_manager(struct ccs_io_buffer *head) |
907 |
{ |
{ |
908 |
char *data = head->write_buf; |
const char *data = head->write_buf; |
|
bool is_delete = ccs_str_starts(&data, "delete "); |
|
909 |
if (!strcmp(data, "manage_by_non_root")) { |
if (!strcmp(data, "manage_by_non_root")) { |
910 |
ccs_manage_by_non_root = !is_delete; |
ccs_manage_by_non_root = !head->w.is_delete; |
911 |
return 0; |
return 0; |
912 |
} |
} |
913 |
return ccs_update_manager_entry(data, is_delete); |
return ccs_update_manager_entry(data, head->w.is_delete); |
914 |
} |
} |
915 |
|
|
916 |
/** |
/** |
926 |
{ |
{ |
927 |
if (head->r.eof) |
if (head->r.eof) |
928 |
return; |
return; |
929 |
list_for_each_cookie(head->r.acl, &ccs_policy_list[CCS_ID_MANAGER]) { |
list_for_each_cookie(head->r.acl, &ccs_kernel_namespace. |
930 |
|
policy_list[CCS_ID_MANAGER]) { |
931 |
struct ccs_manager *ptr = |
struct ccs_manager *ptr = |
932 |
list_entry(head->r.acl, typeof(*ptr), head.list); |
list_entry(head->r.acl, typeof(*ptr), head.list); |
933 |
if (ptr->head.is_deleted) |
if (ptr->head.is_deleted) |
963 |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
964 |
return false; |
return false; |
965 |
exe = ccs_get_exe(); |
exe = ccs_get_exe(); |
966 |
list_for_each_entry_srcu(ptr, &ccs_policy_list[CCS_ID_MANAGER], |
list_for_each_entry_srcu(ptr, &ccs_kernel_namespace. |
967 |
head.list, &ccs_ss) { |
policy_list[CCS_ID_MANAGER], head.list, |
968 |
|
&ccs_ss) { |
969 |
if (ptr->head.is_deleted) |
if (ptr->head.is_deleted) |
970 |
continue; |
continue; |
971 |
if (ptr->is_domain) { |
if (ptr->is_domain) { |
994 |
} |
} |
995 |
|
|
996 |
/** |
/** |
997 |
* ccs_select_one - Parse select command. |
* ccs_select_domain - Parse select command. |
998 |
* |
* |
999 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1000 |
* @data: String to parse. |
* @data: String to parse. |
1003 |
* |
* |
1004 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1005 |
*/ |
*/ |
1006 |
static bool ccs_select_one(struct ccs_io_buffer *head, const char *data) |
static bool ccs_select_domain(struct ccs_io_buffer *head, const char *data) |
1007 |
{ |
{ |
1008 |
unsigned int pid; |
unsigned int pid; |
1009 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
1010 |
bool global_pid = false; |
bool global_pid = false; |
1011 |
if (!strcmp(data, "execute")) { |
if (strncmp(data, "select ", 7)) |
1012 |
head->r.print_execute_only = true; |
return false; |
1013 |
return true; |
data += 7; |
|
} |
|
1014 |
if (sscanf(data, "pid=%u", &pid) == 1 || |
if (sscanf(data, "pid=%u", &pid) == 1 || |
1015 |
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
1016 |
struct task_struct *p; |
struct task_struct *p; |
1028 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
1029 |
ccs_tasklist_unlock(); |
ccs_tasklist_unlock(); |
1030 |
} else if (!strncmp(data, "domain=", 7)) { |
} else if (!strncmp(data, "domain=", 7)) { |
1031 |
if (ccs_domain_def(data + 7)) |
if (*(data + 7) == '<') |
1032 |
domain = ccs_find_domain(data + 7); |
domain = ccs_find_domain(data + 7); |
1033 |
} else |
} else |
1034 |
return false; |
return false; |
1086 |
* @param: Pointer to "struct ccs_acl_param". |
* @param: Pointer to "struct ccs_acl_param". |
1087 |
* |
* |
1088 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1089 |
|
* |
1090 |
|
* Caller holds ccs_read_lock(). |
1091 |
*/ |
*/ |
1092 |
static int ccs_write_task(struct ccs_acl_param *param) |
static int ccs_write_task(struct ccs_acl_param *param) |
1093 |
{ |
{ |
1136 |
/** |
/** |
1137 |
* ccs_write_domain2 - Write domain policy. |
* ccs_write_domain2 - Write domain policy. |
1138 |
* |
* |
1139 |
|
* @ns: Pointer to "struct ccs_policy_namespace". |
1140 |
|
* @list: Pointer to "struct list_head". |
1141 |
* @data: Policy to be interpreted. |
* @data: Policy to be interpreted. |
|
* @domain: Pointer to "struct ccs_domain_info". |
|
1142 |
* @is_delete: True if it is a delete request. |
* @is_delete: True if it is a delete request. |
1143 |
* |
* |
1144 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1145 |
|
* |
1146 |
|
* Caller holds ccs_read_lock(). |
1147 |
*/ |
*/ |
1148 |
static int ccs_write_domain2(char *data, struct ccs_domain_info *domain, |
static int ccs_write_domain2(struct ccs_policy_namespace *ns, |
1149 |
|
struct list_head *list, char *data, |
1150 |
const bool is_delete) |
const bool is_delete) |
1151 |
{ |
{ |
1152 |
struct ccs_acl_param param = { |
struct ccs_acl_param param = { |
1153 |
|
.ns = ns, |
1154 |
|
.list = list, |
1155 |
.data = data, |
.data = data, |
|
.domain = domain, |
|
1156 |
.is_delete = is_delete, |
.is_delete = is_delete, |
1157 |
}; |
}; |
1158 |
static const struct { |
static const struct { |
1164 |
{ "network unix ", ccs_write_unix_network }, |
{ "network unix ", ccs_write_unix_network }, |
1165 |
{ "misc ", ccs_write_misc }, |
{ "misc ", ccs_write_misc }, |
1166 |
{ "capability ", ccs_write_capability }, |
{ "capability ", ccs_write_capability }, |
1167 |
{ "ipc ", ccs_write_ipc }, |
{ "ipc signal ", ccs_write_ipc }, |
1168 |
{ "task ", ccs_write_task }, |
{ "task ", ccs_write_task }, |
1169 |
}; |
}; |
1170 |
u8 i; |
u8 i; |
1171 |
for (i = 0; i < 7; i++) { |
for (i = 0; i < ARRAY_SIZE(ccs_callback); i++) { |
1172 |
if (!ccs_str_starts(¶m.data, ccs_callback[i].keyword)) |
if (!ccs_str_starts(¶m.data, ccs_callback[i].keyword)) |
1173 |
continue; |
continue; |
1174 |
return ccs_callback[i].write(¶m); |
return ccs_callback[i].write(¶m); |
1176 |
return -EINVAL; |
return -EINVAL; |
1177 |
} |
} |
1178 |
|
|
1179 |
|
/** |
1180 |
|
* ccs_delete_domain - Delete a domain. |
1181 |
|
* |
1182 |
|
* @domainname: The name of domain. |
1183 |
|
* |
1184 |
|
* Returns 0. |
1185 |
|
*/ |
1186 |
|
static int ccs_delete_domain(char *domainname) |
1187 |
|
{ |
1188 |
|
struct ccs_domain_info *domain; |
1189 |
|
struct ccs_path_info name; |
1190 |
|
name.name = domainname; |
1191 |
|
ccs_fill_path_info(&name); |
1192 |
|
if (mutex_lock_interruptible(&ccs_policy_lock)) |
1193 |
|
return 0; |
1194 |
|
/* Is there an active domain? */ |
1195 |
|
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
1196 |
|
/* Never delete ccs_kernel_domain. */ |
1197 |
|
if (domain == &ccs_kernel_domain) |
1198 |
|
continue; |
1199 |
|
if (domain->is_deleted || |
1200 |
|
ccs_pathcmp(domain->domainname, &name)) |
1201 |
|
continue; |
1202 |
|
domain->is_deleted = true; |
1203 |
|
break; |
1204 |
|
} |
1205 |
|
mutex_unlock(&ccs_policy_lock); |
1206 |
|
return 0; |
1207 |
|
} |
1208 |
|
|
1209 |
/* String table for domain flags. */ |
/* String table for domain flags. */ |
1210 |
const char * const ccs_dif[CCS_MAX_DOMAIN_INFO_FLAGS] = { |
const char * const ccs_dif[CCS_MAX_DOMAIN_INFO_FLAGS] = { |
1211 |
[CCS_DIF_QUOTA_WARNED] = "quota_exceeded\n", |
[CCS_DIF_QUOTA_WARNED] = "quota_exceeded\n", |
1218 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1219 |
* |
* |
1220 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1221 |
|
* |
1222 |
|
* Caller holds ccs_read_lock(). |
1223 |
*/ |
*/ |
1224 |
static int ccs_write_domain(struct ccs_io_buffer *head) |
static int ccs_write_domain(struct ccs_io_buffer *head) |
1225 |
{ |
{ |
1226 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1227 |
|
struct ccs_policy_namespace *ns; |
1228 |
struct ccs_domain_info *domain = head->w.domain; |
struct ccs_domain_info *domain = head->w.domain; |
1229 |
bool is_delete = false; |
const bool is_delete = head->w.is_delete; |
1230 |
bool is_select = false; |
const bool is_select = !is_delete && ccs_str_starts(&data, "select "); |
1231 |
unsigned int profile; |
unsigned int profile; |
1232 |
if (ccs_str_starts(&data, "delete ")) |
if (*data == '<') { |
|
is_delete = true; |
|
|
else if (ccs_str_starts(&data, "select ")) |
|
|
is_select = true; |
|
|
if (is_select && ccs_select_one(head, data)) |
|
|
return 0; |
|
|
/* Don't allow updating policies by non manager programs. */ |
|
|
if (!ccs_manager()) |
|
|
return -EPERM; |
|
|
if (ccs_domain_def(data)) { |
|
1233 |
domain = NULL; |
domain = NULL; |
1234 |
if (is_delete) |
if (is_delete) |
1235 |
ccs_delete_domain(data); |
ccs_delete_domain(data); |
1236 |
else if (is_select) |
else if (is_select) |
1237 |
domain = ccs_find_domain(data); |
domain = ccs_find_domain(data); |
1238 |
else |
else |
1239 |
domain = ccs_assign_domain(data, 0, 0, false); |
domain = ccs_assign_domain(data, false); |
1240 |
head->w.domain = domain; |
head->w.domain = domain; |
1241 |
return 0; |
return 0; |
1242 |
} |
} |
1243 |
if (!domain) |
if (!domain) |
1244 |
return -EINVAL; |
return -EINVAL; |
1245 |
|
ns = domain->ns; |
1246 |
if (sscanf(data, "use_profile %u\n", &profile) == 1 |
if (sscanf(data, "use_profile %u\n", &profile) == 1 |
1247 |
&& profile < CCS_MAX_PROFILES) { |
&& profile < CCS_MAX_PROFILES) { |
1248 |
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
if (!ccs_policy_loaded || ns->profile_ptr[(u8) profile]) |
1249 |
if (!is_delete) |
if (!is_delete) |
1250 |
domain->profile = (u8) profile; |
domain->profile = (u8) profile; |
1251 |
return 0; |
return 0; |
1263 |
domain->flags[profile] = !is_delete; |
domain->flags[profile] = !is_delete; |
1264 |
return 0; |
return 0; |
1265 |
} |
} |
1266 |
return ccs_write_domain2(data, domain, is_delete); |
return ccs_write_domain2(ns, &domain->acl_info_list, data, is_delete); |
1267 |
} |
} |
1268 |
|
|
1269 |
/** |
/** |
1277 |
static void ccs_print_name_union(struct ccs_io_buffer *head, |
static void ccs_print_name_union(struct ccs_io_buffer *head, |
1278 |
const struct ccs_name_union *ptr) |
const struct ccs_name_union *ptr) |
1279 |
{ |
{ |
1280 |
const bool cond = head->r.print_cond_part; |
ccs_set_space(head); |
1281 |
if (!cond) |
if (ptr->group) { |
|
ccs_set_space(head); |
|
|
if (ptr->is_group) { |
|
1282 |
ccs_set_string(head, "@"); |
ccs_set_string(head, "@"); |
1283 |
ccs_set_string(head, ptr->group->group_name->name); |
ccs_set_string(head, ptr->group->group_name->name); |
1284 |
} else { |
} else { |
|
if (cond) |
|
|
ccs_set_string(head, "\""); |
|
1285 |
ccs_set_string(head, ptr->filename->name); |
ccs_set_string(head, ptr->filename->name); |
|
if (cond) |
|
|
ccs_set_string(head, "\""); |
|
1286 |
} |
} |
1287 |
} |
} |
1288 |
|
|
1289 |
/** |
/** |
1290 |
* ccs_print_number_union - Print a ccs_number_union. |
* ccs_print_name_union_quoted - Print a ccs_name_union with a quote. |
1291 |
|
* |
1292 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1293 |
|
* @ptr: Pointer to "struct ccs_name_union". |
1294 |
|
* |
1295 |
|
* Returns nothing. |
1296 |
|
*/ |
1297 |
|
static void ccs_print_name_union_quoted(struct ccs_io_buffer *head, |
1298 |
|
const struct ccs_name_union *ptr) |
1299 |
|
{ |
1300 |
|
if (ptr->group) { |
1301 |
|
ccs_set_string(head, "@"); |
1302 |
|
ccs_set_string(head, ptr->group->group_name->name); |
1303 |
|
} else { |
1304 |
|
ccs_set_string(head, "\""); |
1305 |
|
ccs_set_string(head, ptr->filename->name); |
1306 |
|
ccs_set_string(head, "\""); |
1307 |
|
} |
1308 |
|
} |
1309 |
|
|
1310 |
|
/** |
1311 |
|
* ccs_print_number_union_nospace - Print a ccs_number_union without a space. |
1312 |
* |
* |
1313 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1314 |
* @ptr: Pointer to "struct ccs_number_union". |
* @ptr: Pointer to "struct ccs_number_union". |
1315 |
* |
* |
1316 |
* Returns nothing. |
* Returns nothing. |
1317 |
*/ |
*/ |
1318 |
static void ccs_print_number_union(struct ccs_io_buffer *head, |
static void ccs_print_number_union_nospace(struct ccs_io_buffer *head, |
1319 |
const struct ccs_number_union *ptr) |
const struct ccs_number_union *ptr) |
1320 |
{ |
{ |
1321 |
if (!head->r.print_cond_part) |
if (ptr->group) { |
|
ccs_set_space(head); |
|
|
if (ptr->is_group) { |
|
1322 |
ccs_set_string(head, "@"); |
ccs_set_string(head, "@"); |
1323 |
ccs_set_string(head, ptr->group->group_name->name); |
ccs_set_string(head, ptr->group->group_name->name); |
1324 |
} else { |
} else { |
1355 |
} |
} |
1356 |
|
|
1357 |
/** |
/** |
1358 |
|
* ccs_print_number_union - Print a ccs_number_union. |
1359 |
|
* |
1360 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1361 |
|
* @ptr: Pointer to "struct ccs_number_union". |
1362 |
|
* |
1363 |
|
* Returns nothing. |
1364 |
|
*/ |
1365 |
|
static void ccs_print_number_union(struct ccs_io_buffer *head, |
1366 |
|
const struct ccs_number_union *ptr) |
1367 |
|
{ |
1368 |
|
ccs_set_space(head); |
1369 |
|
ccs_print_number_union_nospace(head, ptr); |
1370 |
|
} |
1371 |
|
|
1372 |
|
/** |
1373 |
* ccs_print_condition - Print condition part. |
* ccs_print_condition - Print condition part. |
1374 |
* |
* |
1375 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1384 |
case 0: |
case 0: |
1385 |
head->r.cond_index = 0; |
head->r.cond_index = 0; |
1386 |
head->r.cond_step++; |
head->r.cond_step++; |
1387 |
|
if (cond->transit && cond->exec_transit) { |
1388 |
|
ccs_set_space(head); |
1389 |
|
ccs_set_string(head, cond->transit->name); |
1390 |
|
} |
1391 |
/* fall through */ |
/* fall through */ |
1392 |
case 1: |
case 1: |
1393 |
{ |
{ |
1440 |
switch (left) { |
switch (left) { |
1441 |
case CCS_ARGV_ENTRY: |
case CCS_ARGV_ENTRY: |
1442 |
ccs_io_printf(head, |
ccs_io_printf(head, |
1443 |
"exec.argv[%u]%s\"%s\"", |
"exec.argv[%lu]%s=\"", |
1444 |
argv->index, |
argv->index, |
1445 |
argv->is_not ? |
argv->is_not ? "!" : ""); |
1446 |
"!=" : "=", |
ccs_set_string(head, |
1447 |
argv->value->name); |
argv->value->name); |
1448 |
|
ccs_set_string(head, "\""); |
1449 |
argv++; |
argv++; |
1450 |
continue; |
continue; |
1451 |
case CCS_ENVP_ENTRY: |
case CCS_ENVP_ENTRY: |
1452 |
ccs_io_printf(head, |
ccs_set_string(head, "exec.envp[\""); |
1453 |
"exec.envp[\"%s\"]%s", |
ccs_set_string(head, envp->name->name); |
1454 |
envp->name->name, |
ccs_io_printf(head, "\"]%s=", |
1455 |
envp->is_not ? |
envp->is_not ? "!" : ""); |
|
"!=" : "="); |
|
1456 |
if (envp->value) { |
if (envp->value) { |
1457 |
ccs_set_string(head, "\""); |
ccs_set_string(head, "\""); |
1458 |
ccs_set_string(head, envp-> |
ccs_set_string(head, envp-> |
1464 |
envp++; |
envp++; |
1465 |
continue; |
continue; |
1466 |
case CCS_NUMBER_UNION: |
case CCS_NUMBER_UNION: |
1467 |
ccs_print_number_union(head, |
ccs_print_number_union_nospace |
1468 |
numbers_p++); |
(head, numbers_p++); |
1469 |
break; |
break; |
1470 |
default: |
default: |
1471 |
ccs_set_string(head, |
ccs_set_string(head, |
1475 |
ccs_set_string(head, match ? "=" : "!="); |
ccs_set_string(head, match ? "=" : "!="); |
1476 |
switch (right) { |
switch (right) { |
1477 |
case CCS_NAME_UNION: |
case CCS_NAME_UNION: |
1478 |
ccs_print_name_union(head, names_p++); |
ccs_print_name_union_quoted |
1479 |
|
(head, names_p++); |
1480 |
break; |
break; |
1481 |
case CCS_NUMBER_UNION: |
case CCS_NUMBER_UNION: |
1482 |
ccs_print_number_union(head, |
ccs_print_number_union_nospace |
1483 |
numbers_p++); |
(head, numbers_p++); |
1484 |
break; |
break; |
1485 |
default: |
default: |
1486 |
ccs_set_string(head, |
ccs_set_string(head, |
1501 |
ccs_io_printf(head, " grant_log=%s", |
ccs_io_printf(head, " grant_log=%s", |
1502 |
ccs_yesno(cond->grant_log == |
ccs_yesno(cond->grant_log == |
1503 |
CCS_GRANTLOG_YES)); |
CCS_GRANTLOG_YES)); |
1504 |
if (cond->transit) { |
if (cond->transit && !cond->exec_transit) { |
1505 |
|
const char *name = cond->transit->name; |
1506 |
ccs_set_string(head, " auto_domain_transition=\""); |
ccs_set_string(head, " auto_domain_transition=\""); |
1507 |
ccs_set_string(head, cond->transit->name); |
ccs_set_string(head, name); |
1508 |
ccs_set_string(head, "\""); |
ccs_set_string(head, "\""); |
1509 |
} |
} |
1510 |
ccs_set_lf(head); |
ccs_set_lf(head); |
1514 |
} |
} |
1515 |
|
|
1516 |
/** |
/** |
1517 |
* ccs_fns - Find next set bit. |
* ccs_set_group - Print "acl_group " header keyword and category name. |
|
* |
|
|
* @perm: 8 bits value. |
|
|
* @bit: First bit to find. |
|
|
* |
|
|
* Returns next set bit on success, 8 otherwise. |
|
|
*/ |
|
|
static u8 ccs_fns(const u8 perm, u8 bit) |
|
|
{ |
|
|
for ( ; bit < 8; bit++) |
|
|
if (perm & (1 << bit)) |
|
|
break; |
|
|
return bit; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_set_group - Print "acl_group " header keyword. |
|
1518 |
* |
* |
1519 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1520 |
|
* @category: Category name. |
1521 |
* |
* |
1522 |
* Returns nothing. |
* Returns nothing. |
1523 |
*/ |
*/ |
1524 |
static void ccs_set_group(struct ccs_io_buffer *head) |
static void ccs_set_group(struct ccs_io_buffer *head, const char *category) |
1525 |
{ |
{ |
1526 |
if (head->type == CCS_EXCEPTIONPOLICY) |
if (head->type == CCS_EXCEPTIONPOLICY) { |
1527 |
ccs_io_printf(head, "acl_group %u ", head->r.group_index); |
ccs_print_namespace(head); |
1528 |
|
ccs_io_printf(head, "acl_group %u ", head->r.acl_group_index); |
1529 |
|
} |
1530 |
|
ccs_set_string(head, category); |
1531 |
} |
} |
1532 |
|
|
1533 |
/** |
/** |
1542 |
const struct ccs_acl_info *acl) |
const struct ccs_acl_info *acl) |
1543 |
{ |
{ |
1544 |
const u8 acl_type = acl->type; |
const u8 acl_type = acl->type; |
1545 |
|
const bool may_trigger_transition = acl->cond && acl->cond->transit; |
1546 |
|
bool first = true; |
1547 |
u8 bit; |
u8 bit; |
1548 |
if (head->r.print_cond_part) |
if (head->r.print_cond_part) |
1549 |
goto print_cond_part; |
goto print_cond_part; |
1550 |
if (acl->is_deleted) |
if (acl->is_deleted) |
1551 |
return true; |
return true; |
|
next: |
|
|
bit = head->r.bit; |
|
1552 |
if (!ccs_flush(head)) |
if (!ccs_flush(head)) |
1553 |
return false; |
return false; |
1554 |
else if (acl_type == CCS_TYPE_PATH_ACL) { |
else if (acl_type == CCS_TYPE_PATH_ACL) { |
1555 |
struct ccs_path_acl *ptr |
struct ccs_path_acl *ptr |
1556 |
= container_of(acl, typeof(*ptr), head); |
= container_of(acl, typeof(*ptr), head); |
1557 |
const u16 perm = ptr->perm; |
const u16 perm = ptr->perm; |
1558 |
for ( ; bit < CCS_MAX_PATH_OPERATION; bit++) { |
for (bit = 0; bit < CCS_MAX_PATH_OPERATION; bit++) { |
1559 |
if (!(perm & (1 << bit))) |
if (!(perm & (1 << bit))) |
1560 |
continue; |
continue; |
1561 |
if (head->r.print_execute_only && |
if (head->r.print_transition_related_only && |
1562 |
bit != CCS_TYPE_EXECUTE |
bit != CCS_TYPE_EXECUTE && !may_trigger_transition) |
|
/* && bit != CCS_TYPE_TRANSIT */) |
|
1563 |
continue; |
continue; |
1564 |
break; |
if (first) { |
1565 |
|
ccs_set_group(head, "file "); |
1566 |
|
first = false; |
1567 |
|
} else { |
1568 |
|
ccs_set_slash(head); |
1569 |
|
} |
1570 |
|
ccs_set_string(head, ccs_path_keyword[bit]); |
1571 |
} |
} |
1572 |
if (bit >= CCS_MAX_PATH_OPERATION) |
if (first) |
1573 |
goto done; |
return true; |
|
ccs_set_group(head); |
|
|
ccs_set_string(head, "file "); |
|
|
ccs_set_string(head, ccs_path_keyword[bit]); |
|
1574 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1575 |
} else if (acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER || |
} else if (acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER || |
1576 |
acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
1577 |
struct ccs_handler_acl *ptr |
struct ccs_handler_acl *ptr |
1578 |
= container_of(acl, typeof(*ptr), head); |
= container_of(acl, typeof(*ptr), head); |
1579 |
ccs_set_group(head); |
ccs_set_group(head, "task "); |
|
ccs_set_string(head, "task "); |
|
1580 |
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER |
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER |
1581 |
? "auto_execute_handler " : |
? "auto_execute_handler " : |
1582 |
"denied_execute_handler "); |
"denied_execute_handler "); |
1585 |
acl_type == CCS_TYPE_MANUAL_TASK_ACL) { |
acl_type == CCS_TYPE_MANUAL_TASK_ACL) { |
1586 |
struct ccs_task_acl *ptr = |
struct ccs_task_acl *ptr = |
1587 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1588 |
ccs_set_group(head); |
ccs_set_group(head, "task "); |
|
ccs_set_string(head, "task "); |
|
1589 |
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_TASK_ACL ? |
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_TASK_ACL ? |
1590 |
"auto_domain_transition " : |
"auto_domain_transition " : |
1591 |
"manual_domain_transition "); |
"manual_domain_transition "); |
1592 |
ccs_set_string(head, ptr->domainname->name); |
ccs_set_string(head, ptr->domainname->name); |
1593 |
} else if (head->r.print_execute_only) { |
} else if (head->r.print_transition_related_only && |
1594 |
|
!may_trigger_transition) { |
1595 |
return true; |
return true; |
1596 |
} else if (acl_type == CCS_TYPE_MKDEV_ACL) { |
} else if (acl_type == CCS_TYPE_MKDEV_ACL) { |
1597 |
struct ccs_mkdev_acl *ptr = |
struct ccs_mkdev_acl *ptr = |
1598 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1599 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1600 |
if (bit >= CCS_MAX_MKDEV_OPERATION) |
for (bit = 0; bit < CCS_MAX_MKDEV_OPERATION; bit++) { |
1601 |
goto done; |
if (!(perm & (1 << bit))) |
1602 |
ccs_set_group(head); |
continue; |
1603 |
ccs_set_string(head, "file "); |
if (first) { |
1604 |
ccs_set_string(head, ccs_mac_keywords[ccs_pnnn2mac[bit]]); |
ccs_set_group(head, "file "); |
1605 |
|
first = false; |
1606 |
|
} else { |
1607 |
|
ccs_set_slash(head); |
1608 |
|
} |
1609 |
|
ccs_set_string(head, ccs_mac_keywords |
1610 |
|
[ccs_pnnn2mac[bit]]); |
1611 |
|
} |
1612 |
|
if (first) |
1613 |
|
return true; |
1614 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1615 |
ccs_print_number_union(head, &ptr->mode); |
ccs_print_number_union(head, &ptr->mode); |
1616 |
ccs_print_number_union(head, &ptr->major); |
ccs_print_number_union(head, &ptr->major); |
1618 |
} else if (acl_type == CCS_TYPE_PATH2_ACL) { |
} else if (acl_type == CCS_TYPE_PATH2_ACL) { |
1619 |
struct ccs_path2_acl *ptr = |
struct ccs_path2_acl *ptr = |
1620 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1621 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1622 |
if (bit >= CCS_MAX_PATH2_OPERATION) |
for (bit = 0; bit < CCS_MAX_PATH2_OPERATION; bit++) { |
1623 |
goto done; |
if (!(perm & (1 << bit))) |
1624 |
ccs_set_group(head); |
continue; |
1625 |
ccs_set_string(head, "file "); |
if (first) { |
1626 |
ccs_set_string(head, ccs_mac_keywords[ccs_pp2mac[bit]]); |
ccs_set_group(head, "file "); |
1627 |
|
first = false; |
1628 |
|
} else { |
1629 |
|
ccs_set_slash(head); |
1630 |
|
} |
1631 |
|
ccs_set_string(head, ccs_mac_keywords |
1632 |
|
[ccs_pp2mac[bit]]); |
1633 |
|
} |
1634 |
|
if (first) |
1635 |
|
return true; |
1636 |
ccs_print_name_union(head, &ptr->name1); |
ccs_print_name_union(head, &ptr->name1); |
1637 |
ccs_print_name_union(head, &ptr->name2); |
ccs_print_name_union(head, &ptr->name2); |
1638 |
} else if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
} else if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
1639 |
struct ccs_path_number_acl *ptr = |
struct ccs_path_number_acl *ptr = |
1640 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1641 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1642 |
if (bit >= CCS_MAX_PATH_NUMBER_OPERATION) |
for (bit = 0; bit < CCS_MAX_PATH_NUMBER_OPERATION; bit++) { |
1643 |
goto done; |
if (!(perm & (1 << bit))) |
1644 |
ccs_set_group(head); |
continue; |
1645 |
ccs_set_string(head, "file "); |
if (first) { |
1646 |
ccs_set_string(head, ccs_mac_keywords[ccs_pn2mac[bit]]); |
ccs_set_group(head, "file "); |
1647 |
|
first = false; |
1648 |
|
} else { |
1649 |
|
ccs_set_slash(head); |
1650 |
|
} |
1651 |
|
ccs_set_string(head, ccs_mac_keywords |
1652 |
|
[ccs_pn2mac[bit]]); |
1653 |
|
} |
1654 |
|
if (first) |
1655 |
|
return true; |
1656 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1657 |
ccs_print_number_union(head, &ptr->number); |
ccs_print_number_union(head, &ptr->number); |
1658 |
} else if (acl_type == CCS_TYPE_ENV_ACL) { |
} else if (acl_type == CCS_TYPE_ENV_ACL) { |
1659 |
struct ccs_env_acl *ptr = |
struct ccs_env_acl *ptr = |
1660 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1661 |
ccs_set_group(head); |
ccs_set_group(head, "misc env "); |
|
ccs_set_string(head, "misc env "); |
|
1662 |
ccs_set_string(head, ptr->env->name); |
ccs_set_string(head, ptr->env->name); |
1663 |
} else if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
} else if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
1664 |
struct ccs_capability_acl *ptr = |
struct ccs_capability_acl *ptr = |
1665 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1666 |
ccs_set_group(head); |
ccs_set_group(head, "capability "); |
1667 |
ccs_set_string(head, "capability "); |
ccs_set_string(head, ccs_mac_keywords |
1668 |
ccs_set_string(head, |
[ccs_c2mac[ptr->operation]]); |
|
ccs_mac_keywords[ccs_c2mac[ptr->operation]]); |
|
1669 |
} else if (acl_type == CCS_TYPE_INET_ACL) { |
} else if (acl_type == CCS_TYPE_INET_ACL) { |
1670 |
struct ccs_inet_acl *ptr = |
struct ccs_inet_acl *ptr = |
1671 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1672 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1673 |
if (bit >= CCS_MAX_NETWORK_OPERATION) |
for (bit = 0; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
1674 |
goto done; |
if (!(perm & (1 << bit))) |
1675 |
ccs_set_group(head); |
continue; |
1676 |
ccs_set_string(head, "network inet "); |
if (first) { |
1677 |
ccs_set_string(head, ccs_proto_keyword[ptr->protocol]); |
ccs_set_group(head, "network inet "); |
1678 |
ccs_set_space(head); |
ccs_set_string(head, ccs_proto_keyword |
1679 |
ccs_set_string(head, ccs_socket_keyword[bit]); |
[ptr->protocol]); |
1680 |
|
ccs_set_space(head); |
1681 |
|
first = false; |
1682 |
|
} else { |
1683 |
|
ccs_set_slash(head); |
1684 |
|
} |
1685 |
|
ccs_set_string(head, ccs_socket_keyword[bit]); |
1686 |
|
} |
1687 |
|
if (first) |
1688 |
|
return true; |
1689 |
ccs_set_space(head); |
ccs_set_space(head); |
1690 |
switch (ptr->address_type) { |
if (ptr->address.group) { |
|
char buf[128]; |
|
|
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
|
1691 |
ccs_set_string(head, "@"); |
ccs_set_string(head, "@"); |
1692 |
ccs_set_string(head, |
ccs_set_string(head, |
1693 |
ptr->address.group->group_name->name); |
ptr->address.group->group_name->name); |
1694 |
break; |
} else { |
1695 |
case CCS_IP_ADDRESS_TYPE_IPv4: |
char buf[128]; |
1696 |
ccs_print_ipv4(buf, sizeof(buf), ptr->address.ipv4.min, |
ccs_print_ip(buf, sizeof(buf), &ptr->address); |
|
ptr->address.ipv4.max); |
|
|
ccs_io_printf(head, "%s", buf); |
|
|
break; |
|
|
case CCS_IP_ADDRESS_TYPE_IPv6: |
|
|
ccs_print_ipv6(buf, sizeof(buf), ptr->address.ipv6.min, |
|
|
ptr->address.ipv6.max); |
|
1697 |
ccs_io_printf(head, "%s", buf); |
ccs_io_printf(head, "%s", buf); |
|
break; |
|
1698 |
} |
} |
1699 |
ccs_print_number_union(head, &ptr->port); |
ccs_print_number_union(head, &ptr->port); |
1700 |
} else if (acl_type == CCS_TYPE_UNIX_ACL) { |
} else if (acl_type == CCS_TYPE_UNIX_ACL) { |
1701 |
struct ccs_unix_acl *ptr = |
struct ccs_unix_acl *ptr = |
1702 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1703 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1704 |
if (bit >= CCS_MAX_NETWORK_OPERATION) |
for (bit = 0; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
1705 |
goto done; |
if (!(perm & (1 << bit))) |
1706 |
ccs_set_group(head); |
continue; |
1707 |
ccs_set_string(head, "network unix "); |
if (first) { |
1708 |
ccs_set_string(head, ccs_proto_keyword[ptr->protocol]); |
ccs_set_group(head, "network unix "); |
1709 |
ccs_set_space(head); |
ccs_set_string(head, ccs_proto_keyword |
1710 |
ccs_set_string(head, ccs_socket_keyword[bit]); |
[ptr->protocol]); |
1711 |
|
ccs_set_space(head); |
1712 |
|
first = false; |
1713 |
|
} else { |
1714 |
|
ccs_set_slash(head); |
1715 |
|
} |
1716 |
|
ccs_set_string(head, ccs_socket_keyword[bit]); |
1717 |
|
} |
1718 |
|
if (first) |
1719 |
|
return true; |
1720 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1721 |
} else if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
} else if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
1722 |
struct ccs_signal_acl *ptr = |
struct ccs_signal_acl *ptr = |
1723 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1724 |
ccs_set_group(head); |
ccs_set_group(head, "ipc signal "); |
1725 |
ccs_set_string(head, "ipc signal "); |
ccs_print_number_union_nospace(head, &ptr->sig); |
1726 |
ccs_io_printf(head, "%u ", ptr->sig); |
ccs_set_space(head); |
1727 |
ccs_set_string(head, ptr->domainname->name); |
ccs_set_string(head, ptr->domainname->name); |
1728 |
} else if (acl_type == CCS_TYPE_MOUNT_ACL) { |
} else if (acl_type == CCS_TYPE_MOUNT_ACL) { |
1729 |
struct ccs_mount_acl *ptr = |
struct ccs_mount_acl *ptr = |
1730 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1731 |
ccs_set_group(head); |
ccs_set_group(head, "file mount"); |
|
ccs_io_printf(head, "file mount"); |
|
1732 |
ccs_print_name_union(head, &ptr->dev_name); |
ccs_print_name_union(head, &ptr->dev_name); |
1733 |
ccs_print_name_union(head, &ptr->dir_name); |
ccs_print_name_union(head, &ptr->dir_name); |
1734 |
ccs_print_name_union(head, &ptr->fs_type); |
ccs_print_name_union(head, &ptr->fs_type); |
1735 |
ccs_print_number_union(head, &ptr->flags); |
ccs_print_number_union(head, &ptr->flags); |
1736 |
} |
} |
|
head->r.bit = bit + 1; |
|
1737 |
if (acl->cond) { |
if (acl->cond) { |
1738 |
head->r.print_cond_part = true; |
head->r.print_cond_part = true; |
1739 |
head->r.cond_step = 0; |
head->r.cond_step = 0; |
1746 |
} else { |
} else { |
1747 |
ccs_set_lf(head); |
ccs_set_lf(head); |
1748 |
} |
} |
|
switch (acl_type) { |
|
|
case CCS_TYPE_PATH_ACL: |
|
|
case CCS_TYPE_MKDEV_ACL: |
|
|
case CCS_TYPE_PATH2_ACL: |
|
|
case CCS_TYPE_PATH_NUMBER_ACL: |
|
|
case CCS_TYPE_INET_ACL: |
|
|
case CCS_TYPE_UNIX_ACL: |
|
|
goto next; |
|
|
} |
|
|
done: |
|
|
head->r.bit = 0; |
|
1749 |
return true; |
return true; |
1750 |
} |
} |
1751 |
|
|
1752 |
/** |
/** |
1753 |
* ccs_read_domain2 - Read domain policy. |
* ccs_read_domain2 - Read domain policy. |
1754 |
* |
* |
1755 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1756 |
* @domain: Pointer to "struct ccs_domain_info". |
* @list: Pointer to "struct list_head". |
|
* @index: Index number. |
|
1757 |
* |
* |
1758 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1759 |
* |
* |
1760 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1761 |
*/ |
*/ |
1762 |
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
1763 |
struct ccs_domain_info *domain, |
struct list_head *list) |
|
const u8 index) |
|
1764 |
{ |
{ |
1765 |
list_for_each_cookie(head->r.acl, &domain->acl_info_list[index]) { |
list_for_each_cookie(head->r.acl, list) { |
1766 |
struct ccs_acl_info *ptr = |
struct ccs_acl_info *ptr = |
1767 |
list_entry(head->r.acl, typeof(*ptr), list); |
list_entry(head->r.acl, typeof(*ptr), list); |
1768 |
if (!ccs_print_entry(head, ptr)) |
if (!ccs_print_entry(head, ptr)) |
1807 |
ccs_set_lf(head); |
ccs_set_lf(head); |
1808 |
/* fall through */ |
/* fall through */ |
1809 |
case 1: |
case 1: |
1810 |
if (!ccs_read_domain2(head, domain, 0)) |
if (!ccs_read_domain2(head, &domain->acl_info_list)) |
|
return; |
|
|
head->r.step++; |
|
|
/* fall through */ |
|
|
case 2: |
|
|
if (!ccs_read_domain2(head, domain, 1)) |
|
1811 |
return; |
return; |
1812 |
head->r.step++; |
head->r.step++; |
1813 |
if (!ccs_set_lf(head)) |
if (!ccs_set_lf(head)) |
1814 |
return; |
return; |
1815 |
/* fall through */ |
/* fall through */ |
1816 |
case 3: |
case 2: |
1817 |
head->r.step = 0; |
head->r.step = 0; |
1818 |
if (head->r.print_this_domain_only) |
if (head->r.print_this_domain_only) |
1819 |
goto done; |
goto done; |
1824 |
} |
} |
1825 |
|
|
1826 |
/** |
/** |
|
* ccs_write_domain_profile - Assign profile for specified domain. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* |
|
|
* Returns 0 on success, -EINVAL otherwise. |
|
|
* |
|
|
* This is equivalent to doing |
|
|
* |
|
|
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
|
|
* /usr/sbin/ccs-loadpolicy -d |
|
|
* |
|
|
* Caller holds ccs_read_lock(). |
|
|
*/ |
|
|
static int ccs_write_domain_profile(struct ccs_io_buffer *head) |
|
|
{ |
|
|
char *data = head->write_buf; |
|
|
char *cp = strchr(data, ' '); |
|
|
struct ccs_domain_info *domain; |
|
|
unsigned int profile; |
|
|
if (!cp) |
|
|
return -EINVAL; |
|
|
*cp = '\0'; |
|
|
profile = simple_strtoul(data, NULL, 10); |
|
|
if (profile >= CCS_MAX_PROFILES) |
|
|
return -EINVAL; |
|
|
domain = ccs_find_domain(cp + 1); |
|
|
if (domain && (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile])) |
|
|
domain->profile = (u8) profile; |
|
|
return 0; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_read_domain_profile - Read only domainname and profile. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* |
|
|
* Returns nothing. |
|
|
* |
|
|
* This is equivalent to doing |
|
|
* |
|
|
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
|
|
* awk ' { if ( domainname == "" ) { if ( $1 == "<kernel>" ) |
|
|
* domainname = $0; } else if ( $1 == "use_profile" ) { |
|
|
* print $2 " " domainname; domainname = ""; } } ; ' |
|
|
* |
|
|
* Caller holds ccs_read_lock(). |
|
|
*/ |
|
|
static void ccs_read_domain_profile(struct ccs_io_buffer *head) |
|
|
{ |
|
|
if (head->r.eof) |
|
|
return; |
|
|
list_for_each_cookie(head->r.domain, &ccs_domain_list) { |
|
|
struct ccs_domain_info *domain = |
|
|
list_entry(head->r.domain, typeof(*domain), list); |
|
|
if (domain->is_deleted) |
|
|
continue; |
|
|
if (!ccs_flush(head)) |
|
|
return; |
|
|
ccs_io_printf(head, "%u ", domain->profile); |
|
|
ccs_set_string(head, domain->domainname->name); |
|
|
ccs_set_lf(head); |
|
|
} |
|
|
head->r.eof = true; |
|
|
} |
|
|
|
|
|
/** |
|
1827 |
* ccs_write_pid - Specify PID to obtain domainname. |
* ccs_write_pid - Specify PID to obtain domainname. |
1828 |
* |
* |
1829 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1899 |
|
|
1900 |
/* String table for domain transition control keywords. */ |
/* String table for domain transition control keywords. */ |
1901 |
static const char * const ccs_transition_type[CCS_MAX_TRANSITION_TYPE] = { |
static const char * const ccs_transition_type[CCS_MAX_TRANSITION_TYPE] = { |
1902 |
|
[CCS_TRANSITION_CONTROL_NO_RESET] = "no_reset_domain ", |
1903 |
|
[CCS_TRANSITION_CONTROL_RESET] = "reset_domain ", |
1904 |
[CCS_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ", |
[CCS_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ", |
1905 |
[CCS_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ", |
[CCS_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ", |
1906 |
[CCS_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ", |
[CCS_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ", |
1923 |
*/ |
*/ |
1924 |
static int ccs_write_exception(struct ccs_io_buffer *head) |
static int ccs_write_exception(struct ccs_io_buffer *head) |
1925 |
{ |
{ |
1926 |
char *data = head->write_buf; |
const bool is_delete = head->w.is_delete; |
1927 |
const bool is_delete = ccs_str_starts(&data, "delete "); |
struct ccs_acl_param param = { |
1928 |
u8 i; |
.ns = head->w.ns, |
1929 |
static const struct { |
.is_delete = is_delete, |
1930 |
const char *keyword; |
.data = head->write_buf, |
|
int (*write) (char *, const bool); |
|
|
} ccs_callback[2] = { |
|
|
{ "aggregator ", ccs_write_aggregator }, |
|
|
{ "deny_autobind ", ccs_write_reserved_port }, |
|
1931 |
}; |
}; |
1932 |
for (i = 0; i < 2; i++) |
u8 i; |
1933 |
if (ccs_str_starts(&data, ccs_callback[i].keyword)) |
if (ccs_str_starts(¶m.data, "aggregator ")) |
1934 |
return ccs_callback[i].write(data, is_delete); |
return ccs_write_aggregator(¶m); |
1935 |
|
if (ccs_str_starts(¶m.data, "deny_autobind ")) |
1936 |
|
return ccs_write_reserved_port(¶m); |
1937 |
for (i = 0; i < CCS_MAX_TRANSITION_TYPE; i++) |
for (i = 0; i < CCS_MAX_TRANSITION_TYPE; i++) |
1938 |
if (ccs_str_starts(&data, ccs_transition_type[i])) |
if (ccs_str_starts(¶m.data, ccs_transition_type[i])) |
1939 |
return ccs_write_transition_control(data, is_delete, |
return ccs_write_transition_control(¶m, i); |
|
i); |
|
1940 |
for (i = 0; i < CCS_MAX_GROUP; i++) |
for (i = 0; i < CCS_MAX_GROUP; i++) |
1941 |
if (ccs_str_starts(&data, ccs_group_name[i])) |
if (ccs_str_starts(¶m.data, ccs_group_name[i])) |
1942 |
return ccs_write_group(data, is_delete, i); |
return ccs_write_group(¶m, i); |
1943 |
if (ccs_str_starts(&data, "acl_group ")) { |
if (ccs_str_starts(¶m.data, "acl_group ")) { |
1944 |
unsigned int group; |
unsigned int group; |
1945 |
if (sscanf(data, "%u", &group) == 1 && |
char *data; |
1946 |
group < CCS_MAX_ACL_GROUPS) { |
group = simple_strtoul(param.data, &data, 10); |
1947 |
data = strchr(data, ' '); |
if (group < CCS_MAX_ACL_GROUPS && *data++ == ' ') |
1948 |
if (data) |
return ccs_write_domain2(head->w.ns, |
1949 |
return ccs_write_domain2(data + 1, |
&head->w.ns->acl_group[group], |
1950 |
&ccs_acl_group[group], |
data, is_delete); |
|
is_delete); |
|
|
} |
|
1951 |
} |
} |
1952 |
return -EINVAL; |
return -EINVAL; |
1953 |
} |
} |
1964 |
*/ |
*/ |
1965 |
static bool ccs_read_group(struct ccs_io_buffer *head, const int idx) |
static bool ccs_read_group(struct ccs_io_buffer *head, const int idx) |
1966 |
{ |
{ |
1967 |
list_for_each_cookie(head->r.group, &ccs_group_list[idx]) { |
struct ccs_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), |
1968 |
|
namespace_list); |
1969 |
|
struct list_head *list = &ns->group_list[idx]; |
1970 |
|
list_for_each_cookie(head->r.group, list) { |
1971 |
struct ccs_group *group = |
struct ccs_group *group = |
1972 |
list_entry(head->r.group, typeof(*group), head.list); |
list_entry(head->r.group, typeof(*group), head.list); |
1973 |
list_for_each_cookie(head->r.acl, &group->member_list) { |
list_for_each_cookie(head->r.acl, &group->member_list) { |
1977 |
continue; |
continue; |
1978 |
if (!ccs_flush(head)) |
if (!ccs_flush(head)) |
1979 |
return false; |
return false; |
1980 |
|
ccs_print_namespace(head); |
1981 |
ccs_set_string(head, ccs_group_name[idx]); |
ccs_set_string(head, ccs_group_name[idx]); |
1982 |
ccs_set_string(head, group->group_name->name); |
ccs_set_string(head, group->group_name->name); |
1983 |
if (idx == CCS_PATH_GROUP) { |
if (idx == CCS_PATH_GROUP) { |
1994 |
struct ccs_address_group *member = |
struct ccs_address_group *member = |
1995 |
container_of(ptr, typeof(*member), |
container_of(ptr, typeof(*member), |
1996 |
head); |
head); |
1997 |
if (member->is_ipv6) |
ccs_print_ip(buffer, sizeof(buffer), |
1998 |
ccs_print_ipv6(buffer, sizeof(buffer), |
&member->address); |
|
member->min.ipv6, |
|
|
member->max.ipv6); |
|
|
else |
|
|
ccs_print_ipv4(buffer, sizeof(buffer), |
|
|
member->min.ipv4, |
|
|
member->max.ipv4); |
|
1999 |
ccs_io_printf(head, " %s", buffer); |
ccs_io_printf(head, " %s", buffer); |
2000 |
} |
} |
2001 |
ccs_set_lf(head); |
ccs_set_lf(head); |
2018 |
*/ |
*/ |
2019 |
static bool ccs_read_policy(struct ccs_io_buffer *head, const int idx) |
static bool ccs_read_policy(struct ccs_io_buffer *head, const int idx) |
2020 |
{ |
{ |
2021 |
list_for_each_cookie(head->r.acl, &ccs_policy_list[idx]) { |
struct ccs_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), |
2022 |
|
namespace_list); |
2023 |
|
struct list_head *list = &ns->policy_list[idx]; |
2024 |
|
list_for_each_cookie(head->r.acl, list) { |
2025 |
struct ccs_acl_head *acl = |
struct ccs_acl_head *acl = |
2026 |
container_of(head->r.acl, typeof(*acl), list); |
container_of(head->r.acl, typeof(*acl), list); |
2027 |
if (acl->is_deleted) |
if (acl->is_deleted) |
2028 |
continue; |
continue; |
2029 |
|
if (head->r.print_transition_related_only && |
2030 |
|
idx != CCS_ID_TRANSITION_CONTROL) |
2031 |
|
continue; |
2032 |
if (!ccs_flush(head)) |
if (!ccs_flush(head)) |
2033 |
return false; |
return false; |
2034 |
switch (idx) { |
switch (idx) { |
2036 |
{ |
{ |
2037 |
struct ccs_transition_control *ptr = |
struct ccs_transition_control *ptr = |
2038 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
2039 |
|
ccs_print_namespace(head); |
2040 |
ccs_set_string(head, |
ccs_set_string(head, |
2041 |
ccs_transition_type[ptr->type]); |
ccs_transition_type[ptr->type]); |
2042 |
ccs_set_string(head, ptr->program ? |
ccs_set_string(head, ptr->program ? |
2050 |
{ |
{ |
2051 |
struct ccs_aggregator *ptr = |
struct ccs_aggregator *ptr = |
2052 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
2053 |
|
ccs_print_namespace(head); |
2054 |
ccs_set_string(head, "aggregator "); |
ccs_set_string(head, "aggregator "); |
2055 |
ccs_set_string(head, ptr->original_name->name); |
ccs_set_string(head, ptr->original_name->name); |
2056 |
ccs_set_space(head); |
ccs_set_space(head); |
2062 |
{ |
{ |
2063 |
struct ccs_reserved *ptr = |
struct ccs_reserved *ptr = |
2064 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
2065 |
const u16 min_port = ptr->min_port; |
ccs_print_namespace(head); |
|
const u16 max_port = ptr->max_port; |
|
2066 |
ccs_set_string(head, "deny_autobind "); |
ccs_set_string(head, "deny_autobind "); |
2067 |
ccs_io_printf(head, "%u", min_port); |
ccs_print_number_union_nospace(head, |
2068 |
if (min_port != max_port) |
&ptr->port); |
|
ccs_io_printf(head, "-%u", max_port); |
|
2069 |
} |
} |
2070 |
break; |
break; |
2071 |
default: |
default: |
2088 |
*/ |
*/ |
2089 |
static void ccs_read_exception(struct ccs_io_buffer *head) |
static void ccs_read_exception(struct ccs_io_buffer *head) |
2090 |
{ |
{ |
2091 |
|
struct ccs_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), |
2092 |
|
namespace_list); |
2093 |
if (head->r.eof) |
if (head->r.eof) |
2094 |
return; |
return; |
2095 |
while (head->r.step < CCS_MAX_POLICY && |
while (head->r.step < CCS_MAX_POLICY && |
2103 |
if (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP) |
if (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP) |
2104 |
return; |
return; |
2105 |
while (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP |
while (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP |
2106 |
+ CCS_MAX_ACL_GROUPS * 2) { |
+ CCS_MAX_ACL_GROUPS) { |
2107 |
head->r.group_index = (head->r.step - CCS_MAX_POLICY |
head->r.acl_group_index = |
2108 |
- CCS_MAX_GROUP) / 2; |
head->r.step - CCS_MAX_POLICY - CCS_MAX_GROUP; |
2109 |
if (!ccs_read_domain2(head, |
if (!ccs_read_domain2(head, &ns->acl_group |
2110 |
&ccs_acl_group[head->r.group_index], |
[head->r.acl_group_index])) |
|
head->r.step & 1)) |
|
2111 |
return; |
return; |
2112 |
head->r.step++; |
head->r.step++; |
2113 |
} |
} |
2123 |
struct ccs_query { |
struct ccs_query { |
2124 |
struct list_head list; |
struct list_head list; |
2125 |
char *query; |
char *query; |
2126 |
int query_len; |
size_t query_len; |
2127 |
unsigned int serial; |
unsigned int serial; |
2128 |
int timer; |
u8 timer; |
2129 |
int answer; |
u8 answer; |
2130 |
u8 retry; |
u8 retry; |
2131 |
}; |
}; |
2132 |
|
|
2210 |
if (symlink) |
if (symlink) |
2211 |
ccs_addprintf(buffer, len, "%s", symlink); |
ccs_addprintf(buffer, len, "%s", symlink); |
2212 |
ccs_normalize_line(buffer); |
ccs_normalize_line(buffer); |
2213 |
if (!ccs_write_domain2(buffer, ccs_current_domain(), false)) |
{ |
2214 |
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
struct ccs_domain_info *domain = ccs_current_domain(); |
2215 |
|
if (!ccs_write_domain2(domain->ns, &domain->acl_info_list, |
2216 |
|
buffer, false)) |
2217 |
|
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
2218 |
|
} |
2219 |
kfree(buffer); |
kfree(buffer); |
2220 |
} |
} |
2221 |
|
|
2268 |
goto out; |
goto out; |
2269 |
case CCS_CONFIG_LEARNING: |
case CCS_CONFIG_LEARNING: |
2270 |
error = 0; |
error = 0; |
2271 |
/* Check mac_learning_entry parameter. */ |
/* Check max_learning_entry parameter. */ |
2272 |
if (ccs_domain_quota_ok(r)) |
if (ccs_domain_quota_ok(r)) |
2273 |
break; |
break; |
2274 |
/* fall through */ |
/* fall through */ |
2378 |
static void ccs_read_query(struct ccs_io_buffer *head) |
static void ccs_read_query(struct ccs_io_buffer *head) |
2379 |
{ |
{ |
2380 |
struct list_head *tmp; |
struct list_head *tmp; |
2381 |
int pos = 0; |
unsigned int pos = 0; |
2382 |
int len = 0; |
size_t len = 0; |
2383 |
char *buf; |
char *buf; |
2384 |
if (head->r.w_pos) |
if (head->r.w_pos) |
2385 |
return; |
return; |
2416 |
* can change, but I don't care. |
* can change, but I don't care. |
2417 |
*/ |
*/ |
2418 |
if (len == ptr->query_len) |
if (len == ptr->query_len) |
2419 |
snprintf(buf, len + 32, "Q%u-%hu\n%s", ptr->serial, |
snprintf(buf, len + 31, "Q%u-%hu\n%s", ptr->serial, |
2420 |
ptr->retry, ptr->query); |
ptr->retry, ptr->query); |
2421 |
break; |
break; |
2422 |
} |
} |
2457 |
if (ptr->serial != serial) |
if (ptr->serial != serial) |
2458 |
continue; |
continue; |
2459 |
if (!ptr->answer) |
if (!ptr->answer) |
2460 |
ptr->answer = answer; |
ptr->answer = (u8) answer; |
2461 |
break; |
break; |
2462 |
} |
} |
2463 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
2476 |
{ |
{ |
2477 |
if (head->r.eof) |
if (head->r.eof) |
2478 |
return; |
return; |
2479 |
ccs_set_string(head, "1.8.0"); |
ccs_set_string(head, "1.8.3-pre"); |
2480 |
head->r.eof = true; |
head->r.eof = true; |
2481 |
} |
} |
2482 |
|
|
2483 |
/* String table for /proc/ccs/meminfo interface. */ |
/* String table for /proc/ccs/stat interface. */ |
2484 |
static const char * const ccs_policy_headers[CCS_MAX_POLICY_STAT] = { |
static const char * const ccs_policy_headers[CCS_MAX_POLICY_STAT] = { |
2485 |
[CCS_STAT_POLICY_UPDATES] = "update:", |
[CCS_STAT_POLICY_UPDATES] = "update:", |
2486 |
[CCS_STAT_POLICY_LEARNING] = "violation in learning mode:", |
[CCS_STAT_POLICY_LEARNING] = "violation in learning mode:", |
2488 |
[CCS_STAT_POLICY_ENFORCING] = "violation in enforcing mode:", |
[CCS_STAT_POLICY_ENFORCING] = "violation in enforcing mode:", |
2489 |
}; |
}; |
2490 |
|
|
2491 |
/* String table for /proc/ccs/meminfo interface. */ |
/* String table for /proc/ccs/stat interface. */ |
2492 |
static const char * const ccs_memory_headers[CCS_MAX_MEMORY_STAT] = { |
static const char * const ccs_memory_headers[CCS_MAX_MEMORY_STAT] = { |
2493 |
[CCS_MEMORY_POLICY] = "policy:", |
[CCS_MEMORY_POLICY] = "policy:", |
2494 |
[CCS_MEMORY_AUDIT] = "audit log:", |
[CCS_MEMORY_AUDIT] = "audit log:", |
2495 |
[CCS_MEMORY_QUERY] = "query message:", |
[CCS_MEMORY_QUERY] = "query message:", |
2496 |
}; |
}; |
2497 |
|
|
2498 |
/* Timestamp counter for last updated. */ |
/* Timestamp counter for last updated. */ |
2572 |
u8 i; |
u8 i; |
2573 |
if (ccs_str_starts(&data, "Memory used by ")) |
if (ccs_str_starts(&data, "Memory used by ")) |
2574 |
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) |
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) |
2575 |
if (ccs_str_starts(&data, ccs_memory_headers[i])) |
if (ccs_str_starts(&data, ccs_memory_headers[i])) { |
2576 |
sscanf(data, "%u", &ccs_memory_quota[i]); |
if (*data == ' ') |
2577 |
return 0; |
data++; |
2578 |
} |
ccs_memory_quota[i] = |
2579 |
|
simple_strtoul(data, NULL, 10); |
2580 |
/* String table for /proc/ccs/meminfo interface. */ |
} |
|
static const char * const ccs_old_memory_header[CCS_MAX_MEMORY_STAT] = { |
|
|
[CCS_MEMORY_POLICY] = "Policy:", |
|
|
[CCS_MEMORY_AUDIT] = "Audit logs:", |
|
|
[CCS_MEMORY_QUERY] = "Query lists:", |
|
|
}; |
|
|
|
|
|
/** |
|
|
* ccs_read_memory_counter - Read memory usage. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* |
|
|
* Returns nothing. |
|
|
*/ |
|
|
static void ccs_read_memory_counter(struct ccs_io_buffer *head) |
|
|
{ |
|
|
unsigned int total = 0; |
|
|
int i; |
|
|
if (head->r.eof) |
|
|
return; |
|
|
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) { |
|
|
unsigned int used = ccs_memory_used[i]; |
|
|
total += used; |
|
|
ccs_io_printf(head, "%-12s %10u", ccs_old_memory_header[i], |
|
|
used); |
|
|
if (ccs_memory_quota[i]) |
|
|
ccs_io_printf(head, " (Quota: %10u)", |
|
|
ccs_memory_quota[i]); |
|
|
ccs_io_printf(head, "\n"); |
|
|
} |
|
|
ccs_io_printf(head, "%-12s %10u\n", "Total:", total); |
|
|
head->r.eof = true; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_write_memory_quota - Set memory quota. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* |
|
|
* Returns 0. |
|
|
*/ |
|
|
static int ccs_write_memory_quota(struct ccs_io_buffer *head) |
|
|
{ |
|
|
char *data = head->write_buf; |
|
|
u8 i; |
|
|
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) |
|
|
if (ccs_str_starts(&data, ccs_old_memory_header[i])) |
|
|
sscanf(data, "%u", &ccs_memory_quota[i]); |
|
2581 |
return 0; |
return 0; |
2582 |
} |
} |
2583 |
|
|
2596 |
return -ENOMEM; |
return -ENOMEM; |
2597 |
mutex_init(&head->io_sem); |
mutex_init(&head->io_sem); |
2598 |
head->type = type; |
head->type = type; |
2599 |
switch (type) { |
if (type == CCS_EXECUTE_HANDLER) { |
|
case CCS_DOMAINPOLICY: /* /proc/ccs/domain_policy */ |
|
|
head->write = ccs_write_domain; |
|
|
head->read = ccs_read_domain; |
|
|
break; |
|
|
case CCS_EXCEPTIONPOLICY: /* /proc/ccs/exception_policy */ |
|
|
head->write = ccs_write_exception; |
|
|
head->read = ccs_read_exception; |
|
|
break; |
|
|
case CCS_AUDIT: /* /proc/ccs/audit */ |
|
|
head->poll = ccs_poll_log; |
|
|
head->read = ccs_read_log; |
|
|
break; |
|
|
case CCS_DOMAIN_STATUS: /* /proc/ccs/.domain_status */ |
|
|
head->write = ccs_write_domain_profile; |
|
|
head->read = ccs_read_domain_profile; |
|
|
break; |
|
|
case CCS_EXECUTE_HANDLER: /* /proc/ccs/.execute_handler */ |
|
2600 |
/* Allow execute_handler to read process's status. */ |
/* Allow execute_handler to read process's status. */ |
2601 |
if (!(ccs_current_flags() & CCS_TASK_IS_EXECUTE_HANDLER)) { |
if (!(ccs_current_flags() & CCS_TASK_IS_EXECUTE_HANDLER)) { |
2602 |
kfree(head); |
kfree(head); |
2603 |
return -EPERM; |
return -EPERM; |
2604 |
} |
} |
|
/* fall through */ |
|
|
case CCS_PROCESS_STATUS: /* /proc/ccs/.process_status */ |
|
|
head->write = ccs_write_pid; |
|
|
head->read = ccs_read_pid; |
|
|
break; |
|
|
case CCS_VERSION: /* /proc/ccs/version */ |
|
|
head->read = ccs_read_version; |
|
|
head->readbuf_size = 128; |
|
|
break; |
|
|
case CCS_STAT: /* /proc/ccs/stat */ |
|
|
head->write = ccs_write_stat; |
|
|
head->read = ccs_read_stat; |
|
|
head->readbuf_size = 1024; |
|
|
break; |
|
|
case CCS_MEMINFO: /* /proc/ccs/meminfo */ |
|
|
head->write = ccs_write_memory_quota; |
|
|
head->read = ccs_read_memory_counter; |
|
|
head->readbuf_size = 512; |
|
|
break; |
|
|
case CCS_PROFILE: /* /proc/ccs/profile */ |
|
|
head->write = ccs_write_profile; |
|
|
head->read = ccs_read_profile; |
|
|
break; |
|
|
case CCS_QUERY: /* /proc/ccs/query */ |
|
|
head->poll = ccs_poll_query; |
|
|
head->write = ccs_write_answer; |
|
|
head->read = ccs_read_query; |
|
|
break; |
|
|
case CCS_MANAGER: /* /proc/ccs/manager */ |
|
|
head->write = ccs_write_manager; |
|
|
head->read = ccs_read_manager; |
|
|
break; |
|
2605 |
} |
} |
2606 |
if (!(file->f_mode & FMODE_READ)) { |
if ((file->f_mode & FMODE_READ) && type != CCS_AUDIT && |
2607 |
/* |
type != CCS_QUERY) { |
|
* No need to allocate read_buf since it is not opened |
|
|
* for reading. |
|
|
*/ |
|
|
head->read = NULL; |
|
|
head->poll = NULL; |
|
|
} else if (!head->poll) { |
|
2608 |
/* Don't allocate read_buf for poll() access. */ |
/* Don't allocate read_buf for poll() access. */ |
2609 |
if (!head->readbuf_size) |
head->readbuf_size = 4096; |
|
head->readbuf_size = 4096; |
|
2610 |
head->read_buf = kzalloc(head->readbuf_size, CCS_GFP_FLAGS); |
head->read_buf = kzalloc(head->readbuf_size, CCS_GFP_FLAGS); |
2611 |
if (!head->read_buf) { |
if (!head->read_buf) { |
2612 |
kfree(head); |
kfree(head); |
2613 |
return -ENOMEM; |
return -ENOMEM; |
2614 |
} |
} |
2615 |
} |
} |
2616 |
if (!(file->f_mode & FMODE_WRITE)) { |
if (file->f_mode & FMODE_WRITE) { |
|
/* |
|
|
* No need to allocate write_buf since it is not opened |
|
|
* for writing. |
|
|
*/ |
|
|
head->write = NULL; |
|
|
} else if (head->write) { |
|
2617 |
head->writebuf_size = 4096; |
head->writebuf_size = 4096; |
2618 |
head->write_buf = kzalloc(head->writebuf_size, CCS_GFP_FLAGS); |
head->write_buf = kzalloc(head->writebuf_size, CCS_GFP_FLAGS); |
2619 |
if (!head->write_buf) { |
if (!head->write_buf) { |
2629 |
*/ |
*/ |
2630 |
if (type == CCS_QUERY) |
if (type == CCS_QUERY) |
2631 |
atomic_inc(&ccs_query_observers); |
atomic_inc(&ccs_query_observers); |
|
else if (type != CCS_AUDIT && type != CCS_VERSION && |
|
|
type != CCS_MEMINFO && type != CCS_STAT) |
|
|
head->reader_idx = ccs_lock(); |
|
2632 |
file->private_data = head; |
file->private_data = head; |
2633 |
|
ccs_notify_gc(head, true); |
2634 |
return 0; |
return 0; |
2635 |
} |
} |
2636 |
|
|
2649 |
int ccs_poll_control(struct file *file, poll_table *wait) |
int ccs_poll_control(struct file *file, poll_table *wait) |
2650 |
{ |
{ |
2651 |
struct ccs_io_buffer *head = file->private_data; |
struct ccs_io_buffer *head = file->private_data; |
2652 |
if (!head->poll) |
switch (head->type) { |
2653 |
|
case CCS_AUDIT: |
2654 |
|
return ccs_poll_log(file, wait); |
2655 |
|
case CCS_QUERY: |
2656 |
|
return ccs_poll_query(file, wait); |
2657 |
|
default: |
2658 |
return -ENOSYS; |
return -ENOSYS; |
2659 |
return head->poll(file, wait); |
} |
2660 |
|
} |
2661 |
|
|
2662 |
|
/** |
2663 |
|
* ccs_set_namespace_cursor - Set namespace to read. |
2664 |
|
* |
2665 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2666 |
|
* |
2667 |
|
* Returns nothing. |
2668 |
|
*/ |
2669 |
|
static inline void ccs_set_namespace_cursor(struct ccs_io_buffer *head) |
2670 |
|
{ |
2671 |
|
struct list_head *ns; |
2672 |
|
if (head->type != CCS_EXCEPTIONPOLICY && head->type != CCS_PROFILE) |
2673 |
|
return; |
2674 |
|
/* |
2675 |
|
* If this is the first read, or reading previous namespace finished |
2676 |
|
* and has more namespaces to read, update the namespace cursor. |
2677 |
|
*/ |
2678 |
|
ns = head->r.ns; |
2679 |
|
if (!ns || (head->r.eof && ns->next != &ccs_namespace_list)) { |
2680 |
|
/* Clearing is OK because ccs_flush() returned true. */ |
2681 |
|
memset(&head->r, 0, sizeof(head->r)); |
2682 |
|
head->r.ns = ns ? ns->next : ccs_namespace_list.next; |
2683 |
|
} |
2684 |
|
} |
2685 |
|
|
2686 |
|
/** |
2687 |
|
* ccs_has_more_namespace - Check for unread namespaces. |
2688 |
|
* |
2689 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2690 |
|
* |
2691 |
|
* Returns true if we have more entries to print, false otherwise. |
2692 |
|
*/ |
2693 |
|
static inline bool ccs_has_more_namespace(struct ccs_io_buffer *head) |
2694 |
|
{ |
2695 |
|
return (head->type == CCS_EXCEPTIONPOLICY || |
2696 |
|
head->type == CCS_PROFILE) && head->r.eof && |
2697 |
|
head->r.ns->next != &ccs_namespace_list; |
2698 |
} |
} |
2699 |
|
|
2700 |
/** |
/** |
2701 |
* ccs_read_control - read() for /proc/ccs/ interface. |
* ccs_read_control - read() for /proc/ccs/ interface. |
2702 |
* |
* |
2703 |
* @file: Pointer to "struct file". |
* @head: Pointer to "struct ccs_io_buffer". |
2704 |
* @buffer: Poiner to buffer to write to. |
* @buffer: Poiner to buffer to write to. |
2705 |
* @buffer_len: Size of @buffer. |
* @buffer_len: Size of @buffer. |
2706 |
* |
* |
2707 |
* Returns bytes read on success, negative value otherwise. |
* Returns bytes read on success, negative value otherwise. |
2708 |
*/ |
*/ |
2709 |
int ccs_read_control(struct file *file, char __user *buffer, |
ssize_t ccs_read_control(struct ccs_io_buffer *head, char __user *buffer, |
2710 |
const int buffer_len) |
const size_t buffer_len) |
2711 |
{ |
{ |
2712 |
int len; |
int len; |
|
struct ccs_io_buffer *head = file->private_data; |
|
2713 |
int idx; |
int idx; |
|
if (!head->read) |
|
|
return -ENOSYS; |
|
2714 |
if (!access_ok(VERIFY_WRITE, buffer, buffer_len)) |
if (!access_ok(VERIFY_WRITE, buffer, buffer_len)) |
2715 |
return -EFAULT; |
return -EFAULT; |
2716 |
if (mutex_lock_interruptible(&head->io_sem)) |
if (mutex_lock_interruptible(&head->io_sem)) |
2720 |
idx = ccs_read_lock(); |
idx = ccs_read_lock(); |
2721 |
if (ccs_flush(head)) |
if (ccs_flush(head)) |
2722 |
/* Call the policy handler. */ |
/* Call the policy handler. */ |
2723 |
head->read(head); |
do { |
2724 |
ccs_flush(head); |
ccs_set_namespace_cursor(head); |
2725 |
|
switch (head->type) { |
2726 |
|
case CCS_DOMAINPOLICY: |
2727 |
|
ccs_read_domain(head); |
2728 |
|
break; |
2729 |
|
case CCS_EXCEPTIONPOLICY: |
2730 |
|
ccs_read_exception(head); |
2731 |
|
break; |
2732 |
|
case CCS_AUDIT: |
2733 |
|
ccs_read_log(head); |
2734 |
|
break; |
2735 |
|
case CCS_EXECUTE_HANDLER: |
2736 |
|
case CCS_PROCESS_STATUS: |
2737 |
|
ccs_read_pid(head); |
2738 |
|
break; |
2739 |
|
case CCS_VERSION: |
2740 |
|
ccs_read_version(head); |
2741 |
|
break; |
2742 |
|
case CCS_STAT: |
2743 |
|
ccs_read_stat(head); |
2744 |
|
break; |
2745 |
|
case CCS_PROFILE: |
2746 |
|
ccs_read_profile(head); |
2747 |
|
break; |
2748 |
|
case CCS_QUERY: |
2749 |
|
ccs_read_query(head); |
2750 |
|
break; |
2751 |
|
case CCS_MANAGER: |
2752 |
|
ccs_read_manager(head); |
2753 |
|
break; |
2754 |
|
} |
2755 |
|
} while (ccs_flush(head) && ccs_has_more_namespace(head)); |
2756 |
ccs_read_unlock(idx); |
ccs_read_unlock(idx); |
2757 |
len = head->read_user_buf - buffer; |
len = head->read_user_buf - buffer; |
2758 |
mutex_unlock(&head->io_sem); |
mutex_unlock(&head->io_sem); |
2760 |
} |
} |
2761 |
|
|
2762 |
/** |
/** |
2763 |
|
* ccs_parse_policy - Parse a policy line. |
2764 |
|
* |
2765 |
|
* @head: Poiter to "struct ccs_io_buffer". |
2766 |
|
* @line: Line to parse. |
2767 |
|
* |
2768 |
|
* Returns 0 on success, negative value otherwise. |
2769 |
|
* |
2770 |
|
* Caller holds ccs_read_lock(). |
2771 |
|
*/ |
2772 |
|
static int ccs_parse_policy(struct ccs_io_buffer *head, char *line) |
2773 |
|
{ |
2774 |
|
/* Delete request? */ |
2775 |
|
head->w.is_delete = !strncmp(line, "delete ", 7); |
2776 |
|
if (head->w.is_delete) |
2777 |
|
memmove(line, line + 7, strlen(line + 7) + 1); |
2778 |
|
/* Selecting namespace to update. */ |
2779 |
|
if (head->type == CCS_EXCEPTIONPOLICY || head->type == CCS_PROFILE) { |
2780 |
|
if (*line == '<') { |
2781 |
|
char *cp = strchr(line, ' '); |
2782 |
|
if (cp) { |
2783 |
|
*cp++ = '\0'; |
2784 |
|
head->w.ns = ccs_assign_namespace(line); |
2785 |
|
memmove(line, cp, strlen(cp) + 1); |
2786 |
|
} else |
2787 |
|
head->w.ns = NULL; |
2788 |
|
} else |
2789 |
|
head->w.ns = &ccs_kernel_namespace; |
2790 |
|
/* Don't allow updating if namespace is invalid. */ |
2791 |
|
if (!head->w.ns) |
2792 |
|
return -ENOENT; |
2793 |
|
} |
2794 |
|
/* Do the update. */ |
2795 |
|
switch (head->type) { |
2796 |
|
case CCS_DOMAINPOLICY: |
2797 |
|
return ccs_write_domain(head); |
2798 |
|
case CCS_EXCEPTIONPOLICY: |
2799 |
|
return ccs_write_exception(head); |
2800 |
|
case CCS_EXECUTE_HANDLER: |
2801 |
|
case CCS_PROCESS_STATUS: |
2802 |
|
return ccs_write_pid(head); |
2803 |
|
case CCS_STAT: |
2804 |
|
return ccs_write_stat(head); |
2805 |
|
case CCS_PROFILE: |
2806 |
|
return ccs_write_profile(head); |
2807 |
|
case CCS_QUERY: |
2808 |
|
return ccs_write_answer(head); |
2809 |
|
case CCS_MANAGER: |
2810 |
|
return ccs_write_manager(head); |
2811 |
|
default: |
2812 |
|
return -ENOSYS; |
2813 |
|
} |
2814 |
|
} |
2815 |
|
|
2816 |
|
/** |
2817 |
* ccs_write_control - write() for /proc/ccs/ interface. |
* ccs_write_control - write() for /proc/ccs/ interface. |
2818 |
* |
* |
2819 |
* @file: Pointer to "struct file". |
* @head: Pointer to "struct ccs_io_buffer". |
2820 |
* @buffer: Pointer to buffer to read from. |
* @buffer: Pointer to buffer to read from. |
2821 |
* @buffer_len: Size of @buffer. |
* @buffer_len: Size of @buffer. |
2822 |
* |
* |
2823 |
* Returns @buffer_len on success, negative value otherwise. |
* Returns @buffer_len on success, negative value otherwise. |
2824 |
*/ |
*/ |
2825 |
int ccs_write_control(struct file *file, const char __user *buffer, |
ssize_t ccs_write_control(struct ccs_io_buffer *head, |
2826 |
const int buffer_len) |
const char __user *buffer, const size_t buffer_len) |
2827 |
{ |
{ |
|
struct ccs_io_buffer *head = file->private_data; |
|
2828 |
int error = buffer_len; |
int error = buffer_len; |
2829 |
int avail_len = buffer_len; |
size_t avail_len = buffer_len; |
2830 |
char *cp0 = head->write_buf; |
char *cp0 = head->write_buf; |
2831 |
int idx; |
int idx; |
|
if (!head->write) |
|
|
return -ENOSYS; |
|
2832 |
if (!access_ok(VERIFY_READ, buffer, buffer_len)) |
if (!access_ok(VERIFY_READ, buffer, buffer_len)) |
2833 |
return -EFAULT; |
return -EFAULT; |
2834 |
if (mutex_lock_interruptible(&head->io_sem)) |
if (mutex_lock_interruptible(&head->io_sem)) |
2835 |
return -EINTR; |
return -EINTR; |
2836 |
idx = ccs_read_lock(); |
idx = ccs_read_lock(); |
|
/* Don't allow updating policies by non manager programs. */ |
|
|
if (head->write != ccs_write_pid && head->write != ccs_write_domain && |
|
|
!ccs_manager()) { |
|
|
ccs_read_unlock(idx); |
|
|
mutex_unlock(&head->io_sem); |
|
|
return -EPERM; |
|
|
} |
|
2837 |
/* Read a line and dispatch it to the policy handler. */ |
/* Read a line and dispatch it to the policy handler. */ |
2838 |
while (avail_len > 0) { |
while (avail_len > 0) { |
2839 |
char c; |
char c; |
2862 |
cp0[head->w.avail - 1] = '\0'; |
cp0[head->w.avail - 1] = '\0'; |
2863 |
head->w.avail = 0; |
head->w.avail = 0; |
2864 |
ccs_normalize_line(cp0); |
ccs_normalize_line(cp0); |
2865 |
if (head->write(head)) |
if (!strcmp(cp0, "reset")) { |
2866 |
|
head->w.ns = &ccs_kernel_namespace; |
2867 |
|
head->w.domain = NULL; |
2868 |
|
memset(&head->r, 0, sizeof(head->r)); |
2869 |
continue; |
continue; |
2870 |
|
} |
2871 |
|
/* Don't allow updating policies by non manager programs. */ |
2872 |
switch (head->type) { |
switch (head->type) { |
2873 |
|
case CCS_PROCESS_STATUS: |
2874 |
|
/* This does not write anything. */ |
2875 |
|
break; |
2876 |
case CCS_DOMAINPOLICY: |
case CCS_DOMAINPOLICY: |
2877 |
|
if (ccs_select_domain(head, cp0)) |
2878 |
|
continue; |
2879 |
|
/* fall through */ |
2880 |
case CCS_EXCEPTIONPOLICY: |
case CCS_EXCEPTIONPOLICY: |
2881 |
case CCS_DOMAIN_STATUS: |
if (!strcmp(cp0, "select transition_only")) { |
2882 |
case CCS_MEMINFO: |
head->r.print_transition_related_only = true; |
2883 |
case CCS_PROFILE: |
continue; |
2884 |
case CCS_MANAGER: |
} |
2885 |
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
/* fall through */ |
2886 |
|
default: |
2887 |
|
if (!ccs_manager()) { |
2888 |
|
error = -EPERM; |
2889 |
|
goto out; |
2890 |
|
} |
2891 |
|
} |
2892 |
|
switch (ccs_parse_policy(head, cp0)) { |
2893 |
|
case -EPERM: |
2894 |
|
error = -EPERM; |
2895 |
|
goto out; |
2896 |
|
case 0: |
2897 |
|
/* Update statistics. */ |
2898 |
|
switch (head->type) { |
2899 |
|
case CCS_DOMAINPOLICY: |
2900 |
|
case CCS_EXCEPTIONPOLICY: |
2901 |
|
case CCS_STAT: |
2902 |
|
case CCS_PROFILE: |
2903 |
|
case CCS_MANAGER: |
2904 |
|
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
2905 |
|
break; |
2906 |
|
default: |
2907 |
|
break; |
2908 |
|
} |
2909 |
|
break; |
2910 |
} |
} |
2911 |
} |
} |
2912 |
|
out: |
2913 |
ccs_read_unlock(idx); |
ccs_read_unlock(idx); |
2914 |
mutex_unlock(&head->io_sem); |
mutex_unlock(&head->io_sem); |
2915 |
return error; |
return error; |
2918 |
/** |
/** |
2919 |
* ccs_close_control - close() for /proc/ccs/ interface. |
* ccs_close_control - close() for /proc/ccs/ interface. |
2920 |
* |
* |
2921 |
* @file: Pointer to "struct file". |
* @head: Pointer to "struct ccs_io_buffer". |
2922 |
* |
* |
2923 |
* Returns 0. |
* Returns 0. |
2924 |
*/ |
*/ |
2925 |
int ccs_close_control(struct file *file) |
int ccs_close_control(struct ccs_io_buffer *head) |
2926 |
{ |
{ |
|
struct ccs_io_buffer *head = file->private_data; |
|
|
const bool is_write = head->write_buf != NULL; |
|
|
const u8 type = head->type; |
|
2927 |
/* |
/* |
2928 |
* If the file is /proc/ccs/query, decrement the observer counter. |
* If the file is /proc/ccs/query, decrement the observer counter. |
2929 |
*/ |
*/ |
2930 |
if (type == CCS_QUERY) { |
if (head->type == CCS_QUERY && |
2931 |
if (atomic_dec_and_test(&ccs_query_observers)) |
atomic_dec_and_test(&ccs_query_observers)) |
2932 |
wake_up_all(&ccs_answer_wait); |
wake_up_all(&ccs_answer_wait); |
2933 |
} else if (type != CCS_AUDIT && type != CCS_VERSION && |
ccs_notify_gc(head, false); |
|
type != CCS_MEMINFO && type != CCS_STAT) |
|
|
ccs_unlock(head->reader_idx); |
|
|
/* Release memory used for policy I/O. */ |
|
|
kfree(head->read_buf); |
|
|
head->read_buf = NULL; |
|
|
kfree(head->write_buf); |
|
|
head->write_buf = NULL; |
|
|
kfree(head); |
|
|
head = NULL; |
|
|
file->private_data = NULL; |
|
|
if (is_write) |
|
|
ccs_run_gc(); |
|
2934 |
return 0; |
return 0; |
2935 |
} |
} |
2936 |
|
|
2943 |
{ |
{ |
2944 |
ccsecurity_ops.check_profile = ccs_check_profile; |
ccsecurity_ops.check_profile = ccs_check_profile; |
2945 |
} |
} |
2946 |
|
|
2947 |
|
/** |
2948 |
|
* ccs_load_builtin_policy - Load built-in policy. |
2949 |
|
* |
2950 |
|
* Returns nothing. |
2951 |
|
*/ |
2952 |
|
void __init ccs_load_builtin_policy(void) |
2953 |
|
{ |
2954 |
|
/* |
2955 |
|
* This include file is manually created and contains built-in policy |
2956 |
|
* named "ccs_builtin_profile", "ccs_builtin_exception_policy", |
2957 |
|
* "ccs_builtin_domain_policy", "ccs_builtin_manager", |
2958 |
|
* "ccs_builtin_stat" in the form of "static char [] __initdata". |
2959 |
|
*/ |
2960 |
|
#include "builtin-policy.h" |
2961 |
|
u8 i; |
2962 |
|
const int idx = ccs_read_lock(); |
2963 |
|
for (i = 0; i < 5; i++) { |
2964 |
|
struct ccs_io_buffer head = { }; |
2965 |
|
char *start = ""; |
2966 |
|
switch (i) { |
2967 |
|
case 0: |
2968 |
|
start = ccs_builtin_profile; |
2969 |
|
head.type = CCS_PROFILE; |
2970 |
|
break; |
2971 |
|
case 1: |
2972 |
|
start = ccs_builtin_exception_policy; |
2973 |
|
head.type = CCS_EXCEPTIONPOLICY; |
2974 |
|
break; |
2975 |
|
case 2: |
2976 |
|
start = ccs_builtin_domain_policy; |
2977 |
|
head.type = CCS_DOMAINPOLICY; |
2978 |
|
break; |
2979 |
|
case 3: |
2980 |
|
start = ccs_builtin_manager; |
2981 |
|
head.type = CCS_MANAGER; |
2982 |
|
break; |
2983 |
|
case 4: |
2984 |
|
start = ccs_builtin_stat; |
2985 |
|
head.type = CCS_STAT; |
2986 |
|
break; |
2987 |
|
} |
2988 |
|
while (1) { |
2989 |
|
char *end = strchr(start, '\n'); |
2990 |
|
if (!end) |
2991 |
|
break; |
2992 |
|
*end = '\0'; |
2993 |
|
ccs_normalize_line(start); |
2994 |
|
head.write_buf = start; |
2995 |
|
ccs_parse_policy(&head, start); |
2996 |
|
start = end + 1; |
2997 |
|
} |
2998 |
|
} |
2999 |
|
ccs_read_unlock(idx); |
3000 |
|
#ifdef CONFIG_CCSECURITY_OMIT_USERSPACE_LOADER |
3001 |
|
ccs_check_profile(); |
3002 |
|
#endif |
3003 |
|
} |