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Commit f5f3cf6f authored by Aristeu Rozanski's avatar Aristeu Rozanski Committed by Tejun Heo
Browse files

device_cgroup: fix the comment format for recently added functions 



Moving more extensive explanations to the end of the comment.

Cc: Li Zefan <lizefan@huawei.com>
Signed-off-by: default avatarAristeu Rozanski <arozansk@redhat.com>
Acked-by: default avatarSerge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 79d71974

security/device_cgroup.c

+16 −17
Original line number Diff line number Diff line
@@ -306,17 +306,17 @@ static int devcgroup_seq_show(struct seq_file *m, void *v) 
}



/**

 * match_exception	- iterates the exception list trying to match a rule

 * 			  based on type, major, minor and access type. It is

 * 			  considered a match if an exception is found that

 * 			  will contain the entire range of provided parameters.

 * match_exception	- iterates the exception list trying to find a complete match

 * @exceptions: list of exceptions

 * @type: device type (DEV_BLOCK or DEV_CHAR)

 * @major: device file major number, ~0 to match all

 * @minor: device file minor number, ~0 to match all

 * @access: permission mask (ACC_READ, ACC_WRITE, ACC_MKNOD)

 *

 * returns: true in case it matches an exception completely

 * It is considered a complete match if an exception is found that will

 * contain the entire range of provided parameters.

 *

 * Return: true in case it matches an exception completely

 */

static bool match_exception(struct list_head *exceptions, short type,

			    u32 major, u32 minor, short access)
@@ -341,20 +341,19 @@ static bool match_exception(struct list_head *exceptions, short type, 
}



/**

 * match_exception_partial - iterates the exception list trying to match a rule

 * 			     based on type, major, minor and access type. It is

 * 			     considered a match if an exception's range is

 * 			     found to contain *any* of the devices specified by

 * 			     provided parameters. This is used to make sure no

 * 			     extra access is being granted that is forbidden by

 * 			     any of the exception list.

 * match_exception_partial - iterates the exception list trying to find a partial match

 * @exceptions: list of exceptions

 * @type: device type (DEV_BLOCK or DEV_CHAR)

 * @major: device file major number, ~0 to match all

 * @minor: device file minor number, ~0 to match all

 * @access: permission mask (ACC_READ, ACC_WRITE, ACC_MKNOD)

 *

 * returns: true in case the provided range mat matches an exception completely

 * It is considered a partial match if an exception's range is found to

 * contain *any* of the devices specified by provided parameters. This is

 * used to make sure no extra access is being granted that is forbidden by

 * any of the exception list.

 *

 * Return: true in case the provided range mat matches an exception completely

 */

static bool match_exception_partial(struct list_head *exceptions, short type,

				    u32 major, u32 minor, short access)
@@ -387,13 +386,13 @@ static bool match_exception_partial(struct list_head *exceptions, short type, 
}



/**

 * verify_new_ex - verifies if a new exception is part of what is allowed

 *		   by a dev cgroup based on the default policy +

 *		   exceptions. This is used to make sure a child cgroup

 *		   won't have more privileges than its parent

 * verify_new_ex - verifies if a new exception is allowed by parent cgroup's permissions

 * @dev_cgroup: dev cgroup to be tested against

 * @refex: new exception

 * @behavior: behavior of the exception's dev_cgroup

 *

 * This is used to make sure a child cgroup won't have more privileges

 * than its parent

 */

static bool verify_new_ex(struct dev_cgroup *dev_cgroup,

		          struct dev_exception_item *refex,