tools/testing/selftests/ptrace/get_set_sud.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/ptrace/get_set_sud.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/ptrace/get_set_sud.c
Extension
.c
Size
1614 bytes
Lines
73
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

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

Annotation

Implementation Notes