Commit 8fbe71f0 authored by Tetsuo Handa's avatar Tetsuo Handa Committed by James Morris
Browse files

TOMOYO: Make read function to void. 



Read functions do not fail. Make them from int to void.

Signed-off-by: default avatarTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: default avatarJames Morris <jmorris@namei.org>
parent cb917cf5

security/tomoyo/common.c

+17 −38
Original line number Diff line number Diff line
@@ -352,14 +352,12 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head) 
 * tomoyo_read_profile - Read profile table.

 *

 * @head: Pointer to "struct tomoyo_io_buffer".

 *

 * Returns 0.

 */

static int tomoyo_read_profile(struct tomoyo_io_buffer *head)

static void tomoyo_read_profile(struct tomoyo_io_buffer *head)

{

	int index;

	if (head->read_eof)

		return 0;

		return;

	if (head->read_bit)

		goto body;

	tomoyo_io_printf(head, "PROFILE_VERSION=%s\n", "20090903");
@@ -434,7 +432,6 @@ static int tomoyo_read_profile(struct tomoyo_io_buffer *head) 
	}

	if (index == TOMOYO_MAX_PROFILES)

		head->read_eof = true;

	return 0;

}



/*
@@ -538,17 +535,15 @@ static int tomoyo_write_manager_policy(struct tomoyo_io_buffer *head) 
 *

 * @head: Pointer to "struct tomoyo_io_buffer".

 *

 * Returns 0.

 *

 * Caller holds tomoyo_read_lock().

 */

static int tomoyo_read_manager_policy(struct tomoyo_io_buffer *head)

static void tomoyo_read_manager_policy(struct tomoyo_io_buffer *head)

{

	struct list_head *pos;

	bool done = true;



	if (head->read_eof)

		return 0;

		return;

	list_for_each_cookie(pos, head->read_var2,

			     &tomoyo_policy_manager_list) {

		struct tomoyo_policy_manager_entry *ptr;
@@ -561,7 +556,6 @@ static int tomoyo_read_manager_policy(struct tomoyo_io_buffer *head) 
			break;

	}

	head->read_eof = done;

	return 0;

}



/**
@@ -1004,18 +998,16 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head, 
 *

 * @head: Pointer to "struct tomoyo_io_buffer".

 *

 * Returns 0.

 *

 * Caller holds tomoyo_read_lock().

 */

static int tomoyo_read_domain_policy(struct tomoyo_io_buffer *head)

static void tomoyo_read_domain_policy(struct tomoyo_io_buffer *head)

{

	struct list_head *dpos;

	struct list_head *apos;

	bool done = true;



	if (head->read_eof)

		return 0;

		return;

	if (head->read_step == 0)

		head->read_step = 1;

	list_for_each_cookie(dpos, head->read_var1, &tomoyo_domain_list) {
@@ -1070,7 +1062,6 @@ static int tomoyo_read_domain_policy(struct tomoyo_io_buffer *head) 
			break;

	}

	head->read_eof = done;

	return 0;

}



/**
@@ -1122,13 +1113,13 @@ static int tomoyo_write_domain_profile(struct tomoyo_io_buffer *head) 
 *

 * Caller holds tomoyo_read_lock().

 */

static int tomoyo_read_domain_profile(struct tomoyo_io_buffer *head)

static void tomoyo_read_domain_profile(struct tomoyo_io_buffer *head)

{

	struct list_head *pos;

	bool done = true;



	if (head->read_eof)

		return 0;

		return;

	list_for_each_cookie(pos, head->read_var1, &tomoyo_domain_list) {

		struct tomoyo_domain_info *domain;

		domain = list_entry(pos, struct tomoyo_domain_info, list);
@@ -1140,7 +1131,6 @@ static int tomoyo_read_domain_profile(struct tomoyo_io_buffer *head) 
			break;

	}

	head->read_eof = done;

	return 0;

}



/**
@@ -1170,7 +1160,7 @@ static int tomoyo_write_pid(struct tomoyo_io_buffer *head) 
 * The PID is specified by tomoyo_write_pid() so that the user can obtain

 * using read()/write() interface rather than sysctl() interface.

 */

static int tomoyo_read_pid(struct tomoyo_io_buffer *head)

static void tomoyo_read_pid(struct tomoyo_io_buffer *head)

{

	if (head->read_avail == 0 && !head->read_eof) {

		const int pid = head->read_step;
@@ -1188,7 +1178,6 @@ static int tomoyo_read_pid(struct tomoyo_io_buffer *head) 
					 domain->domainname->name);

		head->read_eof = true;

	}

	return 0;

}



/**
@@ -1238,11 +1227,9 @@ static int tomoyo_write_exception_policy(struct tomoyo_io_buffer *head) 
 *

 * @head: Pointer to "struct tomoyo_io_buffer".

 *

 * Returns 0 on success, -EINVAL otherwise.

 *

 * Caller holds tomoyo_read_lock().

 */

static int tomoyo_read_exception_policy(struct tomoyo_io_buffer *head)

static void tomoyo_read_exception_policy(struct tomoyo_io_buffer *head)

{

	if (!head->read_eof) {

		switch (head->read_step) {
@@ -1302,11 +1289,8 @@ static int tomoyo_read_exception_policy(struct tomoyo_io_buffer *head) 
		case 11:

			head->read_eof = true;

			break;

		default:

			return -EINVAL;

		}

	}

	return 0;

}



/**
@@ -1560,17 +1544,15 @@ static int tomoyo_poll_query(struct file *file, poll_table *wait) 
 * tomoyo_read_query - Read access requests which violated policy in enforcing mode.

 *

 * @head: Pointer to "struct tomoyo_io_buffer".

 *

 * Returns 0.

 */

static int tomoyo_read_query(struct tomoyo_io_buffer *head)

static void tomoyo_read_query(struct tomoyo_io_buffer *head)

{

	struct list_head *tmp;

	int pos = 0;

	int len = 0;

	char *buf;

	if (head->read_avail)

		return 0;

		return;

	if (head->read_buf) {

		kfree(head->read_buf);

		head->read_buf = NULL;
@@ -1590,11 +1572,11 @@ static int tomoyo_read_query(struct tomoyo_io_buffer *head) 
	spin_unlock(&tomoyo_query_list_lock);

	if (!len) {

		head->read_step = 0;

		return 0;

		return;

	}

	buf = kzalloc(len, GFP_NOFS);

	if (!buf)

		return 0;

		return;

	pos = 0;

	spin_lock(&tomoyo_query_list_lock);

	list_for_each(tmp, &tomoyo_query_list) {
@@ -1621,7 +1603,6 @@ static int tomoyo_read_query(struct tomoyo_io_buffer *head) 
	} else {

		kfree(buf);

	}

	return 0;

}



/**
@@ -1667,13 +1648,12 @@ static int tomoyo_write_answer(struct tomoyo_io_buffer *head) 
 *

 * Returns version information.

 */

static int tomoyo_read_version(struct tomoyo_io_buffer *head)

static void tomoyo_read_version(struct tomoyo_io_buffer *head)

{

	if (!head->read_eof) {

		tomoyo_io_printf(head, "2.3.0-pre");

		head->read_eof = true;

	}

	return 0;

}



/**
@@ -1683,7 +1663,7 @@ static int tomoyo_read_version(struct tomoyo_io_buffer *head) 
 *

 * Returns the current process's domainname.

 */

static int tomoyo_read_self_domain(struct tomoyo_io_buffer *head)

static void tomoyo_read_self_domain(struct tomoyo_io_buffer *head)

{

	if (!head->read_eof) {

		/*
@@ -1694,7 +1674,6 @@ static int tomoyo_read_self_domain(struct tomoyo_io_buffer *head) 
		tomoyo_io_printf(head, "%s", tomoyo_domain()->domainname->name);

		head->read_eof = true;

	}

	return 0;

}



/**
@@ -1862,7 +1841,7 @@ int tomoyo_read_control(struct file *file, char __user *buffer, 
	if (mutex_lock_interruptible(&head->io_sem))

		return -EINTR;

	/* Call the policy handler. */

	len = head->read(head);

	head->read(head);

	if (len < 0)

		goto out;

	/* Write to buffer. */

security/tomoyo/common.h

+2 −2
Original line number Diff line number Diff line
@@ -526,7 +526,7 @@ struct tomoyo_mount_acl { 
 * is appended.

 */

struct tomoyo_io_buffer {

	int (*read) (struct tomoyo_io_buffer *);

	void (*read) (struct tomoyo_io_buffer *);

	int (*write) (struct tomoyo_io_buffer *);

	int (*poll) (struct file *file, poll_table *wait);

	/* Exclusive lock for this structure.   */
@@ -900,7 +900,7 @@ void *tomoyo_commit_ok(void *data, const unsigned int size); 
const struct tomoyo_path_info *tomoyo_get_name(const char *name);



/* Check for memory usage. */

int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head);

void tomoyo_read_memory_counter(struct tomoyo_io_buffer *head);



/* Set memory quota. */

int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head);

security/tomoyo/memory.c

+1 −2
Original line number Diff line number Diff line
@@ -184,7 +184,7 @@ unsigned int tomoyo_quota_for_query; 
 *

 * Returns memory usage.

 */

int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head)

void tomoyo_read_memory_counter(struct tomoyo_io_buffer *head)

{

	if (!head->read_eof) {

		const unsigned int policy
@@ -212,7 +212,6 @@ int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head) 
		tomoyo_io_printf(head, "Total:        %10u\n", policy + query);

		head->read_eof = true;

	}

	return 0;

}



/**