xref: /aosp_15_r20/external/ltp/testcases/kernel/syscalls/syslog/syslog11.c (revision 49cdfc7efb34551c7342be41a7384b9c40d7cab7)

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
 * Author: Madhu T L <[email protected]>
 */

/*
 * [Description]
 *
 * Verify that, syslog(2) is successful for type ranging from 1 to 8
 */

#include <errno.h>

#include "tst_test.h"
#include "lapi/syscalls.h"
#include "tst_safe_macros.h"

struct tcase {
	int type;
	char *buf;
	int len;
	char *desc;
};

static char buf;

#define syslog(arg1, arg2, arg3) tst_syscall(__NR_syslog, arg1, arg2, arg3)

static struct tcase tcases[] = {
	/* Type 0 and 1 are currently not implemented, always returns success */
	{0, &buf, 0, "type 0/Close the log"},
	{1, &buf, 0, "type 1/Open the log"},
	{2, &buf, 0, "type 2/Read from the log"},
	{3, &buf, 0, "type 3/Read ring buffer"},
	/*
	 * Next two lines will clear dmesg.
	 * Uncomment if that is okay. -Robbie Williamson
	 */
	/*
	 * { 4, &buf, 0, "type 4/Read and clear ring buffer" },
	 * { 5, &buf, 0, "type 5/Clear ring buffer" },
	 */
	{8, NULL, 1, "type 8/Set log level to 1"},
	{8, NULL, 7, "type 8/Set log level to 7(default)"},
	{6, NULL, 0, "type 6/Disable printk's to console"},
	{7, NULL, 0, "type 7/Enable printk's to console"},
};

static void run(unsigned int n)
{
	struct tcase *tc = &tcases[n];

	TST_EXP_PASS(syslog(tc->type, tc->buf, tc->len),
			"syslog() with %s", tc->desc);
}

static struct tst_test test = {
	.test = run,
	.save_restore = (const struct tst_path_val[]) {
		{"/proc/sys/kernel/printk", NULL, TST_SR_TBROK},
		{}
	},
	.needs_root = 1,
	.tcnt = ARRAY_SIZE(tcases),
};