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-rw-r--r--security/tomoyo/common.c49
-rw-r--r--security/tomoyo/domain.c48
-rw-r--r--security/tomoyo/file.c35
-rw-r--r--security/tomoyo/realpath.c4
-rw-r--r--security/tomoyo/tomoyo.h13
5 files changed, 45 insertions, 104 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index ddfb9cccf46..6d2561276a7 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -866,7 +866,6 @@ static struct tomoyo_profile *tomoyo_find_or_assign_new_profile(const unsigned
if (profile >= TOMOYO_MAX_PROFILES)
return NULL;
- /***** EXCLUSIVE SECTION START *****/
mutex_lock(&lock);
ptr = tomoyo_profile_ptr[profile];
if (ptr)
@@ -880,7 +879,6 @@ static struct tomoyo_profile *tomoyo_find_or_assign_new_profile(const unsigned
tomoyo_profile_ptr[profile] = ptr;
ok:
mutex_unlock(&lock);
- /***** EXCLUSIVE SECTION END *****/
return ptr;
}
@@ -1050,7 +1048,6 @@ static int tomoyo_update_manager_entry(const char *manager,
saved_manager = tomoyo_save_name(manager);
if (!saved_manager)
return -ENOMEM;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_policy_manager_list_lock);
list_for_each_entry(ptr, &tomoyo_policy_manager_list, list) {
if (ptr->manager != saved_manager)
@@ -1072,7 +1069,6 @@ static int tomoyo_update_manager_entry(const char *manager,
error = 0;
out:
up_write(&tomoyo_policy_manager_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return error;
}
@@ -1117,10 +1113,9 @@ static int tomoyo_read_manager_policy(struct tomoyo_io_buffer *head)
list);
if (ptr->is_deleted)
continue;
- if (!tomoyo_io_printf(head, "%s\n", ptr->manager->name)) {
- done = false;
+ done = tomoyo_io_printf(head, "%s\n", ptr->manager->name);
+ if (!done)
break;
- }
}
up_read(&tomoyo_policy_manager_list_lock);
head->read_eof = done;
@@ -1197,13 +1192,11 @@ static bool tomoyo_is_select_one(struct tomoyo_io_buffer *head,
if (sscanf(data, "pid=%u", &pid) == 1) {
struct task_struct *p;
- /***** CRITICAL SECTION START *****/
read_lock(&tasklist_lock);
p = find_task_by_vpid(pid);
if (p)
domain = tomoyo_real_domain(p);
read_unlock(&tasklist_lock);
- /***** CRITICAL SECTION END *****/
} else if (!strncmp(data, "domain=", 7)) {
if (tomoyo_is_domain_def(data + 7)) {
down_read(&tomoyo_domain_list_lock);
@@ -1447,15 +1440,14 @@ static int tomoyo_read_domain_policy(struct tomoyo_io_buffer *head)
TOMOYO_DOMAIN_FLAGS_IGNORE_GLOBAL_ALLOW_READ)
ignore_global_allow_read
= TOMOYO_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n";
- if (!tomoyo_io_printf(head,
- "%s\n" TOMOYO_KEYWORD_USE_PROFILE "%u\n"
- "%s%s%s\n", domain->domainname->name,
- domain->profile, quota_exceeded,
- transition_failed,
- ignore_global_allow_read)) {
- done = false;
+ done = tomoyo_io_printf(head, "%s\n" TOMOYO_KEYWORD_USE_PROFILE
+ "%u\n%s%s%s\n",
+ domain->domainname->name,
+ domain->profile, quota_exceeded,
+ transition_failed,
+ ignore_global_allow_read);
+ if (!done)
break;
- }
head->read_step = 2;
acl_loop:
if (head->read_step == 3)
@@ -1463,24 +1455,22 @@ acl_loop:
/* Print ACL entries in the domain. */
down_read(&tomoyo_domain_acl_info_list_lock);
list_for_each_cookie(apos, head->read_var2,
- &domain->acl_info_list) {
+ &domain->acl_info_list) {
struct tomoyo_acl_info *ptr
= list_entry(apos, struct tomoyo_acl_info,
- list);
- if (!tomoyo_print_entry(head, ptr)) {
- done = false;
+ list);
+ done = tomoyo_print_entry(head, ptr);
+ if (!done)
break;
- }
}
up_read(&tomoyo_domain_acl_info_list_lock);
if (!done)
break;
head->read_step = 3;
tail_mark:
- if (!tomoyo_io_printf(head, "\n")) {
- done = false;
+ done = tomoyo_io_printf(head, "\n");
+ if (!done)
break;
- }
head->read_step = 1;
if (head->read_single_domain)
break;
@@ -1550,11 +1540,10 @@ static int tomoyo_read_domain_profile(struct tomoyo_io_buffer *head)
domain = list_entry(pos, struct tomoyo_domain_info, list);
if (domain->is_deleted)
continue;
- if (!tomoyo_io_printf(head, "%u %s\n", domain->profile,
- domain->domainname->name)) {
- done = false;
+ done = tomoyo_io_printf(head, "%u %s\n", domain->profile,
+ domain->domainname->name);
+ if (!done)
break;
- }
}
up_read(&tomoyo_domain_list_lock);
head->read_eof = done;
@@ -1594,13 +1583,11 @@ static int tomoyo_read_pid(struct tomoyo_io_buffer *head)
const int pid = head->read_step;
struct task_struct *p;
struct tomoyo_domain_info *domain = NULL;
- /***** CRITICAL SECTION START *****/
read_lock(&tasklist_lock);
p = find_task_by_vpid(pid);
if (p)
domain = tomoyo_real_domain(p);
read_unlock(&tasklist_lock);
- /***** CRITICAL SECTION END *****/
if (domain)
tomoyo_io_printf(head, "%d %u %s", pid, domain->profile,
domain->domainname->name);
diff --git a/security/tomoyo/domain.c b/security/tomoyo/domain.c
index 2d6748741a2..eb75401fd6b 100644
--- a/security/tomoyo/domain.c
+++ b/security/tomoyo/domain.c
@@ -67,14 +67,12 @@ void tomoyo_set_domain_flag(struct tomoyo_domain_info *domain,
{
/* We need to serialize because this is bitfield operation. */
static DEFINE_SPINLOCK(lock);
- /***** CRITICAL SECTION START *****/
spin_lock(&lock);
if (!is_delete)
domain->flags |= flags;
else
domain->flags &= ~flags;
spin_unlock(&lock);
- /***** CRITICAL SECTION END *****/
}
/**
@@ -135,7 +133,6 @@ static int tomoyo_update_domain_initializer_entry(const char *domainname,
saved_program = tomoyo_save_name(program);
if (!saved_program)
return -ENOMEM;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_domain_initializer_list_lock);
list_for_each_entry(ptr, &tomoyo_domain_initializer_list, list) {
if (ptr->is_not != is_not ||
@@ -161,7 +158,6 @@ static int tomoyo_update_domain_initializer_entry(const char *domainname,
error = 0;
out:
up_write(&tomoyo_domain_initializer_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return error;
}
@@ -193,13 +189,12 @@ bool tomoyo_read_domain_initializer_policy(struct tomoyo_io_buffer *head)
from = " from ";
domain = ptr->domainname->name;
}
- if (!tomoyo_io_printf(head,
- "%s" TOMOYO_KEYWORD_INITIALIZE_DOMAIN
- "%s%s%s\n", no, ptr->program->name, from,
- domain)) {
- done = false;
+ done = tomoyo_io_printf(head,
+ "%s" TOMOYO_KEYWORD_INITIALIZE_DOMAIN
+ "%s%s%s\n", no, ptr->program->name,
+ from, domain);
+ if (!done)
break;
- }
}
up_read(&tomoyo_domain_initializer_list_lock);
return done;
@@ -296,7 +291,6 @@ static int tomoyo_update_domain_keeper_entry(const char *domainname,
struct tomoyo_domain_keeper_entry *ptr;
const struct tomoyo_path_info *saved_domainname;
const struct tomoyo_path_info *saved_program = NULL;
- static DEFINE_MUTEX(lock);
int error = -ENOMEM;
bool is_last_name = false;
@@ -315,7 +309,6 @@ static int tomoyo_update_domain_keeper_entry(const char *domainname,
saved_domainname = tomoyo_save_name(domainname);
if (!saved_domainname)
return -ENOMEM;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_domain_keeper_list_lock);
list_for_each_entry(ptr, &tomoyo_domain_keeper_list, list) {
if (ptr->is_not != is_not ||
@@ -341,7 +334,6 @@ static int tomoyo_update_domain_keeper_entry(const char *domainname,
error = 0;
out:
up_write(&tomoyo_domain_keeper_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return error;
}
@@ -394,13 +386,12 @@ bool tomoyo_read_domain_keeper_policy(struct tomoyo_io_buffer *head)
from = " from ";
program = ptr->program->name;
}
- if (!tomoyo_io_printf(head,
- "%s" TOMOYO_KEYWORD_KEEP_DOMAIN
- "%s%s%s\n", no, program, from,
- ptr->domainname->name)) {
- done = false;
+ done = tomoyo_io_printf(head,
+ "%s" TOMOYO_KEYWORD_KEEP_DOMAIN
+ "%s%s%s\n", no, program, from,
+ ptr->domainname->name);
+ if (!done)
break;
- }
}
up_read(&tomoyo_domain_keeper_list_lock);
return done;
@@ -476,7 +467,6 @@ static int tomoyo_update_alias_entry(const char *original_name,
saved_aliased_name = tomoyo_save_name(aliased_name);
if (!saved_original_name || !saved_aliased_name)
return -ENOMEM;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_alias_list_lock);
list_for_each_entry(ptr, &tomoyo_alias_list, list) {
if (ptr->original_name != saved_original_name ||
@@ -499,7 +489,6 @@ static int tomoyo_update_alias_entry(const char *original_name,
error = 0;
out:
up_write(&tomoyo_alias_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return error;
}
@@ -522,12 +511,11 @@ bool tomoyo_read_alias_policy(struct tomoyo_io_buffer *head)
ptr = list_entry(pos, struct tomoyo_alias_entry, list);
if (ptr->is_deleted)
continue;
- if (!tomoyo_io_printf(head, TOMOYO_KEYWORD_ALIAS "%s %s\n",
- ptr->original_name->name,
- ptr->aliased_name->name)) {
- done = false;
+ done = tomoyo_io_printf(head, TOMOYO_KEYWORD_ALIAS "%s %s\n",
+ ptr->original_name->name,
+ ptr->aliased_name->name);
+ if (!done)
break;
- }
}
up_read(&tomoyo_alias_list_lock);
return done;
@@ -567,7 +555,6 @@ int tomoyo_delete_domain(char *domainname)
name.name = domainname;
tomoyo_fill_path_info(&name);
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_domain_list_lock);
/* Is there an active domain? */
list_for_each_entry(domain, &tomoyo_domain_list, list) {
@@ -581,7 +568,6 @@ int tomoyo_delete_domain(char *domainname)
break;
}
up_write(&tomoyo_domain_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return 0;
}
@@ -600,7 +586,6 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
struct tomoyo_domain_info *domain = NULL;
const struct tomoyo_path_info *saved_domainname;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_domain_list_lock);
domain = tomoyo_find_domain(domainname);
if (domain)
@@ -619,7 +604,6 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
domain->domainname != saved_domainname)
continue;
flag = false;
- /***** CRITICAL SECTION START *****/
read_lock(&tasklist_lock);
for_each_process(p) {
if (tomoyo_real_domain(p) != domain)
@@ -628,7 +612,6 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
break;
}
read_unlock(&tasklist_lock);
- /***** CRITICAL SECTION END *****/
if (flag)
continue;
list_for_each_entry(ptr, &domain->acl_info_list, list) {
@@ -651,7 +634,6 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
}
out:
up_write(&tomoyo_domain_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return domain;
}
@@ -739,7 +721,7 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm,
}
/* Check execute permission. */
- retval = tomoyo_check_exec_perm(old_domain, &r, tmp);
+ retval = tomoyo_check_exec_perm(old_domain, &r);
if (retval < 0)
goto out;
diff --git a/security/tomoyo/file.c b/security/tomoyo/file.c
index 2316da8ec5b..ab0cd353851 100644
--- a/security/tomoyo/file.c
+++ b/security/tomoyo/file.c
@@ -166,7 +166,6 @@ static int tomoyo_update_globally_readable_entry(const char *filename,
saved_filename = tomoyo_save_name(filename);
if (!saved_filename)
return -ENOMEM;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_globally_readable_list_lock);
list_for_each_entry(ptr, &tomoyo_globally_readable_list, list) {
if (ptr->filename != saved_filename)
@@ -187,7 +186,6 @@ static int tomoyo_update_globally_readable_entry(const char *filename,
error = 0;
out:
up_write(&tomoyo_globally_readable_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return error;
}
@@ -249,11 +247,10 @@ bool tomoyo_read_globally_readable_policy(struct tomoyo_io_buffer *head)
list);
if (ptr->is_deleted)
continue;
- if (!tomoyo_io_printf(head, TOMOYO_KEYWORD_ALLOW_READ "%s\n",
- ptr->filename->name)) {
- done = false;
+ done = tomoyo_io_printf(head, TOMOYO_KEYWORD_ALLOW_READ "%s\n",
+ ptr->filename->name);
+ if (!done)
break;
- }
}
up_read(&tomoyo_globally_readable_list_lock);
return done;
@@ -284,7 +281,6 @@ static int tomoyo_update_file_pattern_entry(const char *pattern,
saved_pattern = tomoyo_save_name(pattern);
if (!saved_pattern)
return -ENOMEM;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_pattern_list_lock);
list_for_each_entry(ptr, &tomoyo_pattern_list, list) {
if (saved_pattern != ptr->pattern)
@@ -305,7 +301,6 @@ static int tomoyo_update_file_pattern_entry(const char *pattern,
error = 0;
out:
up_write(&tomoyo_pattern_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return error;
}
@@ -373,11 +368,10 @@ bool tomoyo_read_file_pattern(struct tomoyo_io_buffer *head)
ptr = list_entry(pos, struct tomoyo_pattern_entry, list);
if (ptr->is_deleted)
continue;
- if (!tomoyo_io_printf(head, TOMOYO_KEYWORD_FILE_PATTERN "%s\n",
- ptr->pattern->name)) {
- done = false;
+ done = tomoyo_io_printf(head, TOMOYO_KEYWORD_FILE_PATTERN
+ "%s\n", ptr->pattern->name);
+ if (!done)
break;
- }
}
up_read(&tomoyo_pattern_list_lock);
return done;
@@ -407,7 +401,6 @@ static int tomoyo_update_no_rewrite_entry(const char *pattern,
saved_pattern = tomoyo_save_name(pattern);
if (!saved_pattern)
return -ENOMEM;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_no_rewrite_list_lock);
list_for_each_entry(ptr, &tomoyo_no_rewrite_list, list) {
if (ptr->pattern != saved_pattern)
@@ -428,7 +421,6 @@ static int tomoyo_update_no_rewrite_entry(const char *pattern,
error = 0;
out:
up_write(&tomoyo_no_rewrite_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return error;
}
@@ -489,11 +481,10 @@ bool tomoyo_read_no_rewrite_policy(struct tomoyo_io_buffer *head)
ptr = list_entry(pos, struct tomoyo_no_rewrite_entry, list);
if (ptr->is_deleted)
continue;
- if (!tomoyo_io_printf(head, TOMOYO_KEYWORD_DENY_REWRITE "%s\n",
- ptr->pattern->name)) {
- done = false;
+ done = tomoyo_io_printf(head, TOMOYO_KEYWORD_DENY_REWRITE
+ "%s\n", ptr->pattern->name);
+ if (!done)
break;
- }
}
up_read(&tomoyo_no_rewrite_list_lock);
return done;
@@ -745,7 +736,6 @@ static int tomoyo_update_single_path_acl(const u8 type, const char *filename,
saved_filename = tomoyo_save_name(filename);
if (!saved_filename)
return -ENOMEM;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_domain_acl_info_list_lock);
if (is_delete)
goto delete;
@@ -800,7 +790,6 @@ static int tomoyo_update_single_path_acl(const u8 type, const char *filename,
}
out:
up_write(&tomoyo_domain_acl_info_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return error;
}
@@ -836,7 +825,6 @@ static int tomoyo_update_double_path_acl(const u8 type, const char *filename1,
saved_filename2 = tomoyo_save_name(filename2);
if (!saved_filename1 || !saved_filename2)
return -ENOMEM;
- /***** EXCLUSIVE SECTION START *****/
down_write(&tomoyo_domain_acl_info_list_lock);
if (is_delete)
goto delete;
@@ -884,7 +872,6 @@ static int tomoyo_update_double_path_acl(const u8 type, const char *filename1,
}
out:
up_write(&tomoyo_domain_acl_info_list_lock);
- /***** EXCLUSIVE SECTION END *****/
return error;
}
@@ -1025,13 +1012,11 @@ int tomoyo_check_file_perm(struct tomoyo_domain_info *domain,
*
* @domain: Pointer to "struct tomoyo_domain_info".
* @filename: Check permission for "execute".
- * @tmp: Buffer for temporary use.
*
* Returns 0 on success, negativevalue otherwise.
*/
int tomoyo_check_exec_perm(struct tomoyo_domain_info *domain,
- const struct tomoyo_path_info *filename,
- struct tomoyo_page_buffer *tmp)
+ const struct tomoyo_path_info *filename)
{
const u8 mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c
index 40927a84cb6..3948f6b56ae 100644
--- a/security/tomoyo/realpath.c
+++ b/security/tomoyo/realpath.c
@@ -220,7 +220,6 @@ void *tomoyo_alloc_element(const unsigned int size)
= roundup(size, max(sizeof(void *), sizeof(long)));
if (word_aligned_size > PATH_MAX)
return NULL;
- /***** EXCLUSIVE SECTION START *****/
mutex_lock(&lock);
if (buf_used_len + word_aligned_size > PATH_MAX) {
if (!tomoyo_quota_for_elements ||
@@ -251,7 +250,6 @@ void *tomoyo_alloc_element(const unsigned int size)
}
}
mutex_unlock(&lock);
- /***** EXCLUSIVE SECTION END *****/
return ptr;
}
@@ -318,7 +316,6 @@ const struct tomoyo_path_info *tomoyo_save_name(const char *name)
return NULL;
}
hash = full_name_hash((const unsigned char *) name, len - 1);
- /***** EXCLUSIVE SECTION START *****/
mutex_lock(&lock);
list_for_each_entry(ptr, &tomoyo_name_list[hash % TOMOYO_MAX_HASH],
list) {
@@ -366,7 +363,6 @@ const struct tomoyo_path_info *tomoyo_save_name(const char *name)
}
out:
mutex_unlock(&lock);
- /***** EXCLUSIVE SECTION END *****/
return ptr ? &ptr->entry : NULL;
}
diff --git a/security/tomoyo/tomoyo.h b/security/tomoyo/tomoyo.h
index 41c6ebafb9c..0fd588a629c 100644
--- a/security/tomoyo/tomoyo.h
+++ b/security/tomoyo/tomoyo.h
@@ -17,13 +17,11 @@ struct path;
struct inode;
struct linux_binprm;
struct pt_regs;
-struct tomoyo_page_buffer;
int tomoyo_check_file_perm(struct tomoyo_domain_info *domain,
const char *filename, const u8 perm);
int tomoyo_check_exec_perm(struct tomoyo_domain_info *domain,
- const struct tomoyo_path_info *filename,
- struct tomoyo_page_buffer *buf);
+ const struct tomoyo_path_info *filename);
int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
struct path *path, const int flag);
int tomoyo_check_1path_perm(struct tomoyo_domain_info *domain,
@@ -90,17 +88,10 @@ static inline struct tomoyo_domain_info *tomoyo_domain(void)
return current_cred()->security;
}
-/* Caller holds tasklist_lock spinlock. */
static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
*task)
{
- /***** CRITICAL SECTION START *****/
- const struct cred *cred = get_task_cred(task);
- struct tomoyo_domain_info *domain = cred->security;
-
- put_cred(cred);
- return domain;
- /***** CRITICAL SECTION END *****/
+ return task_cred_xxx(task, security);
}
#endif /* !defined(_SECURITY_TOMOYO_TOMOYO_H) */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-24 03:38:30 +0000