From e2bf69077acefee5247bb661faac2552d29ba7ba Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Fri, 25 Jun 2010 11:16:00 +0900 Subject: TOMOYO: Rename symbols. Use shorter name in order to make it easier to fit 80 columns limit. Signed-off-by: Tetsuo Handa Signed-off-by: James Morris --- security/tomoyo/common.c | 226 +++++++++++++++++++++-------------------------- 1 file changed, 100 insertions(+), 126 deletions(-) (limited to 'security/tomoyo/common.c') diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index 30e4b08905e..65c18af3ffe 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -248,14 +248,13 @@ static void tomoyo_print_number_union(struct tomoyo_io_buffer *head, } /** - * tomoyo_find_or_assign_new_profile - Create a new profile. + * tomoyo_assign_profile - Create a new profile. * * @profile: Profile number to create. * * Returns pointer to "struct tomoyo_profile" on success, NULL otherwise. */ -static struct tomoyo_profile *tomoyo_find_or_assign_new_profile -(const unsigned int profile) +static struct tomoyo_profile *tomoyo_assign_profile(const unsigned int profile) { struct tomoyo_profile *ptr; struct tomoyo_profile *entry; @@ -443,7 +442,7 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head) if (*cp != '-') return -EINVAL; data = cp + 1; - profile = tomoyo_find_or_assign_new_profile(i); + profile = tomoyo_assign_profile(i); if (!profile) return -EINVAL; } @@ -584,13 +583,11 @@ static void tomoyo_read_profile(struct tomoyo_io_buffer *head) goto next; } -static bool tomoyo_same_manager_entry(const struct tomoyo_acl_head *a, - const struct tomoyo_acl_head *b) +static bool tomoyo_same_manager(const struct tomoyo_acl_head *a, + const struct tomoyo_acl_head *b) { - return container_of(a, struct tomoyo_policy_manager_entry, head) - ->manager == - container_of(b, struct tomoyo_policy_manager_entry, head) - ->manager; + return container_of(a, struct tomoyo_manager, head)->manager == + container_of(b, struct tomoyo_manager, head)->manager; } /** @@ -606,7 +603,7 @@ static bool tomoyo_same_manager_entry(const struct tomoyo_acl_head *a, static int tomoyo_update_manager_entry(const char *manager, const bool is_delete) { - struct tomoyo_policy_manager_entry e = { }; + struct tomoyo_manager e = { }; int error; if (tomoyo_domain_def(manager)) { @@ -622,13 +619,13 @@ static int tomoyo_update_manager_entry(const char *manager, return -ENOMEM; error = tomoyo_update_policy(&e.head, sizeof(e), is_delete, &tomoyo_policy_list[TOMOYO_ID_MANAGER], - tomoyo_same_manager_entry); + tomoyo_same_manager); tomoyo_put_name(e.manager); return error; } /** - * tomoyo_write_manager_policy - Write manager policy. + * tomoyo_write_manager - Write manager policy. * * @head: Pointer to "struct tomoyo_io_buffer". * @@ -636,7 +633,7 @@ static int tomoyo_update_manager_entry(const char *manager, * * Caller holds tomoyo_read_lock(). */ -static int tomoyo_write_manager_policy(struct tomoyo_io_buffer *head) +static int tomoyo_write_manager(struct tomoyo_io_buffer *head) { char *data = head->write_buf; bool is_delete = tomoyo_str_starts(&data, TOMOYO_KEYWORD_DELETE); @@ -649,19 +646,19 @@ static int tomoyo_write_manager_policy(struct tomoyo_io_buffer *head) } /** - * tomoyo_read_manager_policy - Read manager policy. + * tomoyo_read_manager - Read manager policy. * * @head: Pointer to "struct tomoyo_io_buffer". * * Caller holds tomoyo_read_lock(). */ -static void tomoyo_read_manager_policy(struct tomoyo_io_buffer *head) +static void tomoyo_read_manager(struct tomoyo_io_buffer *head) { if (head->r.eof) return; list_for_each_cookie(head->r.acl, &tomoyo_policy_list[TOMOYO_ID_MANAGER]) { - struct tomoyo_policy_manager_entry *ptr = + struct tomoyo_manager *ptr = list_entry(head->r.acl, typeof(*ptr), head.list); if (ptr->head.is_deleted) continue; @@ -674,16 +671,16 @@ static void tomoyo_read_manager_policy(struct tomoyo_io_buffer *head) } /** - * tomoyo_policy_manager - Check whether the current process is a policy manager. + * tomoyo_manager - Check whether the current process is a policy manager. * * Returns true if the current process is permitted to modify policy * via /sys/kernel/security/tomoyo/ interface. * * Caller holds tomoyo_read_lock(). */ -static bool tomoyo_policy_manager(void) +static bool tomoyo_manager(void) { - struct tomoyo_policy_manager_entry *ptr; + struct tomoyo_manager *ptr; const char *exe; const struct task_struct *task = current; const struct tomoyo_path_info *domainname = tomoyo_domain()->domainname; @@ -813,7 +810,7 @@ static int tomoyo_delete_domain(char *domainname) } /** - * tomoyo_write_domain_policy2 - Write domain policy. + * tomoyo_write_domain2 - Write domain policy. * * @head: Pointer to "struct tomoyo_io_buffer". * @@ -821,17 +818,16 @@ static int tomoyo_delete_domain(char *domainname) * * Caller holds tomoyo_read_lock(). */ -static int tomoyo_write_domain_policy2(char *data, - struct tomoyo_domain_info *domain, - const bool is_delete) +static int tomoyo_write_domain2(char *data, struct tomoyo_domain_info *domain, + const bool is_delete) { if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_ALLOW_MOUNT)) - return tomoyo_write_mount_policy(data, domain, is_delete); - return tomoyo_write_file_policy(data, domain, is_delete); + return tomoyo_write_mount(data, domain, is_delete); + return tomoyo_write_file(data, domain, is_delete); } /** - * tomoyo_write_domain_policy - Write domain policy. + * tomoyo_write_domain - Write domain policy. * * @head: Pointer to "struct tomoyo_io_buffer". * @@ -839,7 +835,7 @@ static int tomoyo_write_domain_policy2(char *data, * * Caller holds tomoyo_read_lock(). */ -static int tomoyo_write_domain_policy(struct tomoyo_io_buffer *head) +static int tomoyo_write_domain(struct tomoyo_io_buffer *head) { char *data = head->write_buf; struct tomoyo_domain_info *domain = head->write_var1; @@ -854,7 +850,7 @@ static int tomoyo_write_domain_policy(struct tomoyo_io_buffer *head) if (is_select && tomoyo_select_one(head, data)) return 0; /* Don't allow updating policies by non manager programs. */ - if (!tomoyo_policy_manager()) + if (!tomoyo_manager()) return -EPERM; if (tomoyo_domain_def(data)) { domain = NULL; @@ -863,7 +859,7 @@ static int tomoyo_write_domain_policy(struct tomoyo_io_buffer *head) else if (is_select) domain = tomoyo_find_domain(data); else - domain = tomoyo_find_or_assign_new_domain(data, 0); + domain = tomoyo_assign_domain(data, 0); head->write_var1 = domain; return 0; } @@ -888,7 +884,7 @@ static int tomoyo_write_domain_policy(struct tomoyo_io_buffer *head) domain->transition_failed = !is_delete; return 0; } - return tomoyo_write_domain_policy2(data, domain, is_delete); + return tomoyo_write_domain2(data, domain, is_delete); } /** @@ -1022,13 +1018,13 @@ static bool tomoyo_read_domain2(struct tomoyo_io_buffer *head, } /** - * tomoyo_read_domain_policy - Read domain policy. + * tomoyo_read_domain - Read domain policy. * * @head: Pointer to "struct tomoyo_io_buffer". * * Caller holds tomoyo_read_lock(). */ -static void tomoyo_read_domain_policy(struct tomoyo_io_buffer *head) +static void tomoyo_read_domain(struct tomoyo_io_buffer *head) { if (head->r.eof) return; @@ -1208,8 +1204,13 @@ static const char *tomoyo_transition_type[TOMOYO_MAX_TRANSITION_TYPE] = { [TOMOYO_TRANSITION_CONTROL_KEEP] = TOMOYO_KEYWORD_KEEP_DOMAIN }; +static const char *tomoyo_group_name[TOMOYO_MAX_GROUP] = { + [TOMOYO_PATH_GROUP] = TOMOYO_KEYWORD_PATH_GROUP, + [TOMOYO_NUMBER_GROUP] = TOMOYO_KEYWORD_NUMBER_GROUP +}; + /** - * tomoyo_write_exception_policy - Write exception policy. + * tomoyo_write_exception - Write exception policy. * * @head: Pointer to "struct tomoyo_io_buffer". * @@ -1217,37 +1218,34 @@ static const char *tomoyo_transition_type[TOMOYO_MAX_TRANSITION_TYPE] = { * * Caller holds tomoyo_read_lock(). */ -static int tomoyo_write_exception_policy(struct tomoyo_io_buffer *head) +static int tomoyo_write_exception(struct tomoyo_io_buffer *head) { char *data = head->write_buf; bool is_delete = tomoyo_str_starts(&data, TOMOYO_KEYWORD_DELETE); u8 i; - - for (i = 0; i < TOMOYO_MAX_TRANSITION_TYPE; i++) { + static const struct { + const char *keyword; + int (*write) (char *, const bool); + } tomoyo_callback[4] = { + { TOMOYO_KEYWORD_AGGREGATOR, tomoyo_write_aggregator }, + { TOMOYO_KEYWORD_FILE_PATTERN, tomoyo_write_pattern }, + { TOMOYO_KEYWORD_DENY_REWRITE, tomoyo_write_no_rewrite }, + { TOMOYO_KEYWORD_ALLOW_READ, tomoyo_write_globally_readable }, + }; + + for (i = 0; i < TOMOYO_MAX_TRANSITION_TYPE; i++) if (tomoyo_str_starts(&data, tomoyo_transition_type[i])) return tomoyo_write_transition_control(data, is_delete, i); - } - if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_AGGREGATOR)) - return tomoyo_write_aggregator_policy(data, is_delete); - if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_ALLOW_READ)) - return tomoyo_write_globally_readable_policy(data, is_delete); - if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_FILE_PATTERN)) - return tomoyo_write_pattern_policy(data, is_delete); - if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_DENY_REWRITE)) - return tomoyo_write_no_rewrite_policy(data, is_delete); - if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_PATH_GROUP)) - return tomoyo_write_group(data, is_delete, TOMOYO_PATH_GROUP); - if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_NUMBER_GROUP)) - return tomoyo_write_group(data, is_delete, TOMOYO_NUMBER_GROUP); + for (i = 0; i < 4; i++) + if (tomoyo_str_starts(&data, tomoyo_callback[i].keyword)) + return tomoyo_callback[i].write(data, is_delete); + for (i = 0; i < TOMOYO_MAX_GROUP; i++) + if (tomoyo_str_starts(&data, tomoyo_group_name[i])) + return tomoyo_write_group(data, is_delete, i); return -EINVAL; } -static const char *tomoyo_group_name[TOMOYO_MAX_GROUP] = { - [TOMOYO_PATH_GROUP] = TOMOYO_KEYWORD_PATH_GROUP, - [TOMOYO_NUMBER_GROUP] = TOMOYO_KEYWORD_NUMBER_GROUP -}; - /** * tomoyo_read_group - Read "struct tomoyo_path_group"/"struct tomoyo_number_group" list. * @@ -1331,8 +1329,8 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx) break; case TOMOYO_ID_GLOBALLY_READABLE: { - struct tomoyo_globally_readable_file_entry *ptr - = container_of(acl, typeof(*ptr), head); + struct tomoyo_readable_file *ptr = + container_of(acl, typeof(*ptr), head); tomoyo_set_string(head, TOMOYO_KEYWORD_ALLOW_READ); tomoyo_set_string(head, ptr->filename->name); @@ -1340,7 +1338,7 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx) break; case TOMOYO_ID_AGGREGATOR: { - struct tomoyo_aggregator_entry *ptr = + struct tomoyo_aggregator *ptr = container_of(acl, typeof(*ptr), head); tomoyo_set_string(head, TOMOYO_KEYWORD_AGGREGATOR); @@ -1353,7 +1351,7 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx) break; case TOMOYO_ID_PATTERN: { - struct tomoyo_pattern_entry *ptr = + struct tomoyo_no_pattern *ptr = container_of(acl, typeof(*ptr), head); tomoyo_set_string(head, TOMOYO_KEYWORD_FILE_PATTERN); @@ -1362,7 +1360,7 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx) break; case TOMOYO_ID_NO_REWRITE: { - struct tomoyo_no_rewrite_entry *ptr = + struct tomoyo_no_rewrite *ptr = container_of(acl, typeof(*ptr), head); tomoyo_set_string(head, TOMOYO_KEYWORD_DENY_REWRITE); @@ -1379,13 +1377,13 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx) } /** - * tomoyo_read_exception_policy - Read exception policy. + * tomoyo_read_exception - Read exception policy. * * @head: Pointer to "struct tomoyo_io_buffer". * * Caller holds tomoyo_read_lock(). */ -static void tomoyo_read_exception_policy(struct tomoyo_io_buffer *head) +static void tomoyo_read_exception(struct tomoyo_io_buffer *head) { if (head->r.eof) return; @@ -1472,7 +1470,7 @@ static DECLARE_WAIT_QUEUE_HEAD(tomoyo_query_wait); static DEFINE_SPINLOCK(tomoyo_query_list_lock); /* Structure for query. */ -struct tomoyo_query_entry { +struct tomoyo_query { struct list_head list; char *query; int query_len; @@ -1481,7 +1479,7 @@ struct tomoyo_query_entry { int answer; }; -/* The list for "struct tomoyo_query_entry". */ +/* The list for "struct tomoyo_query". */ static LIST_HEAD(tomoyo_query_list); /* @@ -1508,7 +1506,7 @@ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) int pos; int len; static unsigned int tomoyo_serial; - struct tomoyo_query_entry *tomoyo_query_entry = NULL; + struct tomoyo_query *entry = NULL; bool quota_exceeded = false; char *header; switch (r->mode) { @@ -1526,7 +1524,7 @@ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) vsnprintf(buffer, len - 1, fmt, args); va_end(args); tomoyo_normalize_line(buffer); - tomoyo_write_domain_policy2(buffer, r->domain, false); + tomoyo_write_domain2(buffer, r->domain, false); kfree(buffer); /* fall through */ case TOMOYO_CONFIG_PERMISSIVE: @@ -1542,51 +1540,50 @@ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) header = tomoyo_init_audit_log(&len, r); if (!header) goto out; - tomoyo_query_entry = kzalloc(sizeof(*tomoyo_query_entry), GFP_NOFS); - if (!tomoyo_query_entry) + entry = kzalloc(sizeof(*entry), GFP_NOFS); + if (!entry) goto out; - tomoyo_query_entry->query = kzalloc(len, GFP_NOFS); - if (!tomoyo_query_entry->query) + entry->query = kzalloc(len, GFP_NOFS); + if (!entry->query) goto out; - len = ksize(tomoyo_query_entry->query); - INIT_LIST_HEAD(&tomoyo_query_entry->list); + len = ksize(entry->query); spin_lock(&tomoyo_query_list_lock); if (tomoyo_quota_for_query && tomoyo_query_memory_size + len + - sizeof(*tomoyo_query_entry) >= tomoyo_quota_for_query) { + sizeof(*entry) >= tomoyo_quota_for_query) { quota_exceeded = true; } else { - tomoyo_query_memory_size += len + sizeof(*tomoyo_query_entry); - tomoyo_query_entry->serial = tomoyo_serial++; + tomoyo_query_memory_size += len + sizeof(*entry); + entry->serial = tomoyo_serial++; } spin_unlock(&tomoyo_query_list_lock); if (quota_exceeded) goto out; - pos = snprintf(tomoyo_query_entry->query, len - 1, "Q%u-%hu\n%s", - tomoyo_query_entry->serial, r->retry, header); + pos = snprintf(entry->query, len - 1, "Q%u-%hu\n%s", + entry->serial, r->retry, header); kfree(header); header = NULL; va_start(args, fmt); - vsnprintf(tomoyo_query_entry->query + pos, len - 1 - pos, fmt, args); - tomoyo_query_entry->query_len = strlen(tomoyo_query_entry->query) + 1; + vsnprintf(entry->query + pos, len - 1 - pos, fmt, args); + entry->query_len = strlen(entry->query) + 1; va_end(args); spin_lock(&tomoyo_query_list_lock); - list_add_tail(&tomoyo_query_entry->list, &tomoyo_query_list); + list_add_tail(&entry->list, &tomoyo_query_list); spin_unlock(&tomoyo_query_list_lock); /* Give 10 seconds for supervisor's opinion. */ - for (tomoyo_query_entry->timer = 0; - atomic_read(&tomoyo_query_observers) && tomoyo_query_entry->timer < 100; - tomoyo_query_entry->timer++) { + for (entry->timer = 0; + atomic_read(&tomoyo_query_observers) && entry->timer < 100; + entry->timer++) { wake_up(&tomoyo_query_wait); set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(HZ / 10); - if (tomoyo_query_entry->answer) + if (entry->answer) break; } spin_lock(&tomoyo_query_list_lock); - list_del(&tomoyo_query_entry->list); - tomoyo_query_memory_size -= len + sizeof(*tomoyo_query_entry); + list_del(&entry->list); + tomoyo_query_memory_size -= len + sizeof(*entry); spin_unlock(&tomoyo_query_list_lock); - switch (tomoyo_query_entry->answer) { + switch (entry->answer) { case 3: /* Asked to retry by administrator. */ error = TOMOYO_RETRY_REQUEST; r->retry++; @@ -1603,9 +1600,9 @@ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) break; } out: - if (tomoyo_query_entry) - kfree(tomoyo_query_entry->query); - kfree(tomoyo_query_entry); + if (entry) + kfree(entry->query); + kfree(entry); kfree(header); return error; } @@ -1628,9 +1625,8 @@ static int tomoyo_poll_query(struct file *file, poll_table *wait) for (i = 0; i < 2; i++) { spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { - struct tomoyo_query_entry *ptr - = list_entry(tmp, struct tomoyo_query_entry, - list); + struct tomoyo_query *ptr = + list_entry(tmp, typeof(*ptr), list); if (ptr->answer) continue; found = true; @@ -1665,8 +1661,7 @@ static void tomoyo_read_query(struct tomoyo_io_buffer *head) } spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { - struct tomoyo_query_entry *ptr = - list_entry(tmp, typeof(*ptr), list); + struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); if (ptr->answer) continue; if (pos++ != head->r.query_index) @@ -1685,8 +1680,7 @@ static void tomoyo_read_query(struct tomoyo_io_buffer *head) pos = 0; spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { - struct tomoyo_query_entry *ptr = - list_entry(tmp, typeof(*ptr), list); + struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); if (ptr->answer) continue; if (pos++ != head->r.query_index) @@ -1724,8 +1718,7 @@ static int tomoyo_write_answer(struct tomoyo_io_buffer *head) unsigned int answer; spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { - struct tomoyo_query_entry *ptr - = list_entry(tmp, struct tomoyo_query_entry, list); + struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); ptr->timer = 0; } spin_unlock(&tomoyo_query_list_lock); @@ -1733,8 +1726,7 @@ static int tomoyo_write_answer(struct tomoyo_io_buffer *head) return -EINVAL; spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { - struct tomoyo_query_entry *ptr - = list_entry(tmp, struct tomoyo_query_entry, list); + struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); if (ptr->serial != serial) continue; if (!ptr->answer) @@ -1801,13 +1793,13 @@ int tomoyo_open_control(const u8 type, struct file *file) switch (type) { case TOMOYO_DOMAINPOLICY: /* /sys/kernel/security/tomoyo/domain_policy */ - head->write = tomoyo_write_domain_policy; - head->read = tomoyo_read_domain_policy; + head->write = tomoyo_write_domain; + head->read = tomoyo_read_domain; break; case TOMOYO_EXCEPTIONPOLICY: /* /sys/kernel/security/tomoyo/exception_policy */ - head->write = tomoyo_write_exception_policy; - head->read = tomoyo_read_exception_policy; + head->write = tomoyo_write_exception; + head->read = tomoyo_read_exception; break; case TOMOYO_SELFDOMAIN: /* /sys/kernel/security/tomoyo/self_domain */ @@ -1846,8 +1838,8 @@ int tomoyo_open_control(const u8 type, struct file *file) break; case TOMOYO_MANAGER: /* /sys/kernel/security/tomoyo/manager */ - head->write = tomoyo_write_manager_policy; - head->read = tomoyo_read_manager_policy; + head->write = tomoyo_write_manager; + head->read = tomoyo_read_manager; break; } if (!(file->f_mode & FMODE_READ)) { @@ -1905,23 +1897,6 @@ int tomoyo_open_control(const u8 type, struct file *file) return 0; } -/** - * tomoyo_poll_control - poll() for /sys/kernel/security/tomoyo/ interface. - * - * @file: Pointer to "struct file". - * @wait: Pointer to "poll_table". - * - * Waits for read readiness. - * /sys/kernel/security/tomoyo/query is handled by /usr/sbin/tomoyo-queryd . - */ -int tomoyo_poll_control(struct file *file, poll_table *wait) -{ - struct tomoyo_io_buffer *head = file->private_data; - if (!head->poll) - return -ENOSYS; - return head->poll(file, wait); -} - /** * tomoyo_read_control - read() for /sys/kernel/security/tomoyo/ interface. * @@ -1979,8 +1954,7 @@ int tomoyo_write_control(struct file *file, const char __user *buffer, return -EFAULT; /* Don't allow updating policies by non manager programs. */ if (head->write != tomoyo_write_pid && - head->write != tomoyo_write_domain_policy && - !tomoyo_policy_manager()) + head->write != tomoyo_write_domain && !tomoyo_manager()) return -EPERM; if (mutex_lock_interruptible(&head->io_sem)) return -EINTR; -- cgit v1.2.3