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// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include "../kselftest_harness.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/wait.h>
#include <sys/syscall.h>
#include <sys/prctl.h>
#include "linux/ptrace.h"
static int sys_ptrace(int request, pid_t pid, void *addr, void *data)
{
return syscall(SYS_ptrace, request, pid, addr, data);
}
TEST(get_set_sud)
{
struct ptrace_sud_config config;
pid_t child;
int ret = 0;
int status;
child = fork();
ASSERT_GE(child, 0);
if (child == 0) {
ASSERT_EQ(0, sys_ptrace(PTRACE_TRACEME, 0, 0, 0)) {
TH_LOG("PTRACE_TRACEME: %m");
}
kill(getpid(), SIGSTOP);
_exit(1);
}
waitpid(child, &status, 0);
memset(&config, 0xff, sizeof(config));
config.mode = PR_SYS_DISPATCH_ON;
ret = sys_ptrace(PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG, child,
(void *)sizeof(config), &config);
ASSERT_EQ(ret, 0);
ASSERT_EQ(config.mode, PR_SYS_DISPATCH_OFF);
ASSERT_EQ(config.selector, 0);
ASSERT_EQ(config.offset, 0);
ASSERT_EQ(config.len, 0);
config.mode = PR_SYS_DISPATCH_ON;
config.selector = 0;
config.offset = 0x400000;
config.len = 0x1000;
ret = sys_ptrace(PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG, child,
(void *)sizeof(config), &config);
ASSERT_EQ(ret, 0);
memset(&config, 1, sizeof(config));
ret = sys_ptrace(PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG, child,
(void *)sizeof(config), &config);
ASSERT_EQ(ret, 0);
ASSERT_EQ(config.mode, PR_SYS_DISPATCH_ON);
ASSERT_EQ(config.selector, 0);
ASSERT_EQ(config.offset, 0x400000);
ASSERT_EQ(config.len, 0x1000);
kill(child, SIGKILL);
}
TEST_HARNESS_MAIN
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