diff options
| -rw-r--r-- | security/tomoyo/common.c | 22 | ||||
| -rw-r--r-- | security/tomoyo/common.h | 2 | ||||
| -rw-r--r-- | security/tomoyo/domain.c | 8 | ||||
| -rw-r--r-- | security/tomoyo/file.c | 15 | ||||
| -rw-r--r-- | security/tomoyo/realpath.c | 45 | ||||
| -rw-r--r-- | security/tomoyo/realpath.h | 8 |
6 files changed, 29 insertions, 71 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index e331e69..ef66223 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -750,7 +750,7 @@ bool tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...) * * Returns the tomoyo_realpath() of current process on success, NULL otherwise. * - * This function uses tomoyo_alloc(), so the caller must call tomoyo_free() + * This function uses kzalloc(), so the caller must call kfree() * if this function didn't return NULL. */ static const char *tomoyo_get_exe(void) @@ -1248,7 +1248,7 @@ static bool tomoyo_is_policy_manager(void) last_pid = pid; } } - tomoyo_free(exe); + kfree(exe); return found; } @@ -1931,7 +1931,7 @@ static int tomoyo_read_self_domain(struct tomoyo_io_buffer *head) */ static int tomoyo_open_control(const u8 type, struct file *file) { - struct tomoyo_io_buffer *head = tomoyo_alloc(sizeof(*head)); + struct tomoyo_io_buffer *head = kzalloc(sizeof(*head), GFP_KERNEL); if (!head) return -ENOMEM; @@ -1992,9 +1992,9 @@ static int tomoyo_open_control(const u8 type, struct file *file) } else { if (!head->readbuf_size) head->readbuf_size = 4096 * 2; - head->read_buf = tomoyo_alloc(head->readbuf_size); + head->read_buf = kzalloc(head->readbuf_size, GFP_KERNEL); if (!head->read_buf) { - tomoyo_free(head); + kfree(head); return -ENOMEM; } } @@ -2006,10 +2006,10 @@ static int tomoyo_open_control(const u8 type, struct file *file) head->write = NULL; } else if (head->write) { head->writebuf_size = 4096 * 2; - head->write_buf = tomoyo_alloc(head->writebuf_size); + head->write_buf = kzalloc(head->writebuf_size, GFP_KERNEL); if (!head->write_buf) { - tomoyo_free(head->read_buf); - tomoyo_free(head); + kfree(head->read_buf); + kfree(head); return -ENOMEM; } } @@ -2141,11 +2141,11 @@ static int tomoyo_close_control(struct file *file) tomoyo_read_unlock(head->reader_idx); /* Release memory used for policy I/O. */ - tomoyo_free(head->read_buf); + kfree(head->read_buf); head->read_buf = NULL; - tomoyo_free(head->write_buf); + kfree(head->write_buf); head->write_buf = NULL; - tomoyo_free(head); + kfree(head); head = NULL; file->private_data = NULL; return 0; diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h index 610a6a0..8b59ec8 100644 --- a/security/tomoyo/common.h +++ b/security/tomoyo/common.h @@ -89,7 +89,7 @@ struct tomoyo_path_info { * "struct tomoyo_path_info_with_data". */ struct tomoyo_path_info_with_data { - /* Keep "head" first, for this pointer is passed to tomoyo_free(). */ + /* Keep "head" first, for this pointer is passed to kfree(). */ struct tomoyo_path_info head; char barrier1[16]; /* Safeguard for overrun. */ char body[TOMOYO_MAX_PATHNAME_LEN]; diff --git a/security/tomoyo/domain.c b/security/tomoyo/domain.c index a55a1cc..3484397 100644 --- a/security/tomoyo/domain.c +++ b/security/tomoyo/domain.c @@ -787,7 +787,7 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm) * This function assumes that the size of buffer returned by * tomoyo_realpath() = TOMOYO_MAX_PATHNAME_LEN. */ - struct tomoyo_page_buffer *tmp = tomoyo_alloc(sizeof(*tmp)); + struct tomoyo_page_buffer *tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); struct tomoyo_domain_info *old_domain = tomoyo_domain(); struct tomoyo_domain_info *domain = NULL; const char *old_domain_name = old_domain->domainname->name; @@ -902,8 +902,8 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm) if (!domain) domain = old_domain; bprm->cred->security = domain; - tomoyo_free(real_program_name); - tomoyo_free(symlink_program_name); - tomoyo_free(tmp); + kfree(real_program_name); + kfree(symlink_program_name); + kfree(tmp); return retval; } diff --git a/security/tomoyo/file.c b/security/tomoyo/file.c index cfcb096..24af081 100644 --- a/security/tomoyo/file.c +++ b/security/tomoyo/file.c @@ -150,7 +150,8 @@ static bool tomoyo_strendswith(const char *name, const char *tail) static struct tomoyo_path_info *tomoyo_get_path(struct path *path) { int error; - struct tomoyo_path_info_with_data *buf = tomoyo_alloc(sizeof(*buf)); + struct tomoyo_path_info_with_data *buf = kzalloc(sizeof(*buf), + GFP_KERNEL); if (!buf) return NULL; @@ -162,7 +163,7 @@ static struct tomoyo_path_info *tomoyo_get_path(struct path *path) tomoyo_fill_path_info(&buf->head); return &buf->head; } - tomoyo_free(buf); + kfree(buf); return NULL; } @@ -1227,7 +1228,7 @@ int tomoyo_check_open_permission(struct tomoyo_domain_info *domain, TOMOYO_TYPE_TRUNCATE_ACL, buf, mode); out: - tomoyo_free(buf); + kfree(buf); tomoyo_read_unlock(idx); if (!is_enforce) error = 0; @@ -1273,7 +1274,7 @@ int tomoyo_check_1path_perm(struct tomoyo_domain_info *domain, error = tomoyo_check_single_path_permission2(domain, operation, buf, mode); out: - tomoyo_free(buf); + kfree(buf); tomoyo_read_unlock(idx); if (!is_enforce) error = 0; @@ -1312,7 +1313,7 @@ int tomoyo_check_rewrite_permission(struct tomoyo_domain_info *domain, TOMOYO_TYPE_REWRITE_ACL, buf, mode); out: - tomoyo_free(buf); + kfree(buf); tomoyo_read_unlock(idx); if (!is_enforce) error = 0; @@ -1379,8 +1380,8 @@ int tomoyo_check_2path_perm(struct tomoyo_domain_info * const domain, false); } out: - tomoyo_free(buf1); - tomoyo_free(buf2); + kfree(buf1); + kfree(buf2); tomoyo_read_unlock(idx); if (!is_enforce) error = 0; diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c index 54226d5..92460c7 100644 --- a/security/tomoyo/realpath.c +++ b/security/tomoyo/realpath.c @@ -150,12 +150,12 @@ int tomoyo_realpath_from_path2(struct path *path, char *newname, * * Returns the realpath of the given @path on success, NULL otherwise. * - * These functions use tomoyo_alloc(), so the caller must call tomoyo_free() + * These functions use kzalloc(), so the caller must call kfree() * if these functions didn't return NULL. */ char *tomoyo_realpath_from_path(struct path *path) { - char *buf = tomoyo_alloc(sizeof(struct tomoyo_page_buffer)); + char *buf = kzalloc(sizeof(struct tomoyo_page_buffer), GFP_KERNEL); BUILD_BUG_ON(sizeof(struct tomoyo_page_buffer) <= TOMOYO_MAX_PATHNAME_LEN - 1); @@ -164,7 +164,7 @@ char *tomoyo_realpath_from_path(struct path *path) if (tomoyo_realpath_from_path2(path, buf, TOMOYO_MAX_PATHNAME_LEN - 1) == 0) return buf; - tomoyo_free(buf); + kfree(buf); return NULL; } @@ -346,39 +346,6 @@ void __init tomoyo_realpath_init(void) panic("Can't register tomoyo_kernel_domain"); } -/* Memory allocated for temporary purpose. */ -static atomic_t tomoyo_dynamic_memory_size; - -/** - * tomoyo_alloc - Allocate memory for temporary purpose. - * - * @size: Size in bytes. - * - * Returns pointer to allocated memory on success, NULL otherwise. - */ -void *tomoyo_alloc(const size_t size) -{ - void *p = kzalloc(size, GFP_KERNEL); - if (p) - atomic_add(ksize(p), &tomoyo_dynamic_memory_size); - return p; -} - -/** - * tomoyo_free - Release memory allocated by tomoyo_alloc(). - * - * @p: Pointer returned by tomoyo_alloc(). May be NULL. - * - * Returns nothing. - */ -void tomoyo_free(const void *p) -{ - if (p) { - atomic_sub(ksize(p), &tomoyo_dynamic_memory_size); - kfree(p); - } -} - /** * tomoyo_read_memory_counter - Check for memory usage in bytes. * @@ -393,8 +360,6 @@ int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head) = tomoyo_allocated_memory_for_savename; const unsigned int private = tomoyo_allocated_memory_for_elements; - const unsigned int dynamic - = atomic_read(&tomoyo_dynamic_memory_size); char buffer[64]; memset(buffer, 0, sizeof(buffer)); @@ -412,9 +377,7 @@ int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head) else buffer[0] = '\0'; tomoyo_io_printf(head, "Private: %10u%s\n", private, buffer); - tomoyo_io_printf(head, "Dynamic: %10u\n", dynamic); - tomoyo_io_printf(head, "Total: %10u\n", - shared + private + dynamic); + tomoyo_io_printf(head, "Total: %10u\n", shared + private); head->read_eof = true; } return 0; diff --git a/security/tomoyo/realpath.h b/security/tomoyo/realpath.h index 47b4f59..da4f06f 100644 --- a/security/tomoyo/realpath.h +++ b/security/tomoyo/realpath.h @@ -25,7 +25,7 @@ int tomoyo_realpath_from_path2(struct path *path, char *newname, /* * Returns realpath(3) of the given pathname but ignores chroot'ed root. - * These functions use tomoyo_alloc(), so the caller must call tomoyo_free() + * These functions use kzalloc(), so the caller must call kfree() * if these functions didn't return NULL. */ char *tomoyo_realpath(const char *pathname); @@ -45,12 +45,6 @@ bool tomoyo_memory_ok(void *ptr); */ const struct tomoyo_path_info *tomoyo_save_name(const char *name); -/* Allocate memory for temporary use (e.g. permission checks). */ -void *tomoyo_alloc(const size_t size); - -/* Free memory allocated by tomoyo_alloc(). */ -void tomoyo_free(const void *p); - /* Check for memory usage. */ int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head); |
