tools/testing/selftests/cgroup/test_kill.c

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/cgroup/test_kill.c

Extension

.c

Size

5486 bytes

Lines

300

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.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• errno.h
• linux/limits.h
• stdbool.h
• stdio.h
• stdlib.h
• string.h
• sys/types.h
• unistd.h
• kselftest.h
• ../pidfd/pidfd.h
• cgroup_util.h

Detected Declarations

• struct cgkill_test
• function cg_kill_wait
• function child_fn
• function test_cgkill_simple
• function test_cgkill_tree
• function forkbomb_fn
• function test_cgkill_forkbomb
• function main

Annotated Snippet

struct cgkill_test {
	int (*fn)(const char *root);
	const char *name;
} tests[] = {
	T(test_cgkill_simple),
	T(test_cgkill_tree),
	T(test_cgkill_forkbomb),
};
#undef T

int main(int argc, char *argv[])
{
	char root[PATH_MAX];
	int i;

	ksft_print_header();
	ksft_set_plan(ARRAY_SIZE(tests));
	if (cg_find_unified_root(root, sizeof(root), NULL))
		ksft_exit_skip("cgroup v2 isn't mounted\n");
	for (i = 0; i < ARRAY_SIZE(tests); i++) {
		switch (tests[i].fn(root)) {
		case KSFT_PASS:
			ksft_test_result_pass("%s\n", tests[i].name);
			break;
		case KSFT_SKIP:
			ksft_test_result_skip("%s\n", tests[i].name);
			break;
		default:
			ksft_test_result_fail("%s\n", tests[i].name);
			break;
		}
	}

	ksft_finished();
}

Annotation

• Immediate include surface: `errno.h`, `linux/limits.h`, `stdbool.h`, `stdio.h`, `stdlib.h`, `string.h`, `sys/types.h`, `unistd.h`.
• Detected declarations: `struct cgkill_test`, `function cg_kill_wait`, `function child_fn`, `function test_cgkill_simple`, `function test_cgkill_tree`, `function forkbomb_fn`, `function test_cgkill_forkbomb`, `function main`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.