sysctl: kdoc'ify sysctl_writes_strict

#ifdef CONFIG_PROC_SYSCTL

#ifdef CONFIG_PROC_SYSCTL

#define SYSCTL_WRITES_LEGACY	-1

/**

#define SYSCTL_WRITES_WARN	 0

 * enum sysctl_writes_mode - supported sysctl write modes

#define SYSCTL_WRITES_STRICT	 1

 *

 * @SYSCTL_WRITES_LEGACY: each write syscall must fully contain the sysctl value

 * 	to be written, and multiple writes on the same sysctl file descriptor

 * 	will rewrite the sysctl value, regardless of file position. No warning

 * 	is issued when the initial position is not 0.

 * @SYSCTL_WRITES_WARN: same as above but warn when the initial file position is

 * 	not 0.

 * @SYSCTL_WRITES_STRICT: writes to numeric sysctl entries must always be at

 * 	file position 0 and the value must be fully contained in the buffer

 * 	sent to the write syscall. If dealing with strings respect the file

 * 	position, but restrict this to the max length of the buffer, anything

 * 	passed the max lenght will be ignored. Multiple writes will append

 * 	to the buffer.

 *

 * These write modes control how current file position affects the behavior of

 * updating sysctl values through the proc interface on each write.

 */

enum sysctl_writes_mode {

	SYSCTL_WRITES_LEGACY		= -1,

	SYSCTL_WRITES_WARN		= 0,

	SYSCTL_WRITES_STRICT		= 1,

};

static int sysctl_writes_strict = SYSCTL_WRITES_STRICT;

static enum sysctl_writes_mode sysctl_writes_strict = SYSCTL_WRITES_STRICT;

static int proc_do_cad_pid(struct ctl_table *table, int write,

static int proc_do_cad_pid(struct ctl_table *table, int write,

		  void __user *buffer, size_t *lenp, loff_t *ppos);

		  void __user *buffer, size_t *lenp, loff_t *ppos);