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selftests/nolibc: Add coverage of vfork()

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Generalise the existing fork() test to also cover the newly added vfork()
implementation.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250703-arm64-gcs-vfork-exit-v3-4-1e9a9d2ddbbe@kernel.org
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
This commit is contained in:
Mark Brown 2025-07-03 17:00:18 +01:00 committed by Thomas Weißschuh
parent fb476dfb13
commit 696bf15792
1 changed files with 19 additions and 4 deletions
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23
tools/testing/selftests/nolibc/nolibc-test.c
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@ -877,7 +877,12 @@ int test_file_stream(void)
return 0;
}
int test_fork(void)
enum fork_type {
FORK_STANDARD,
FORK_VFORK,
};
int test_fork(enum fork_type type)
{
int status;
pid_t pid;
@ -886,14 +891,23 @@ int test_fork(void)
fflush(stdout);
fflush(stderr);
pid = fork();
switch (type) {
case FORK_STANDARD:
pid = fork();
break;
case FORK_VFORK:
pid = vfork();
break;
default:
return 1;
}
switch (pid) {
case -1:
return 1;
case 0:
exit(123);
_exit(123);
default:
pid = waitpid(pid, &status, 0);
@ -1330,7 +1344,7 @@ int run_syscall(int min, int max)
CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
CASE_TEST(file_stream); EXPECT_SYSZR(1, test_file_stream()); break;
CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break;
CASE_TEST(fork); EXPECT_SYSZR(1, test_fork(FORK_STANDARD)); break;
CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
CASE_TEST(directories); EXPECT_SYSZR(proc, test_dirent()); break;
@ -1374,6 +1388,7 @@ int run_syscall(int min, int max)
CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break;
CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
CASE_TEST(vfork); EXPECT_SYSZR(1, test_fork(FORK_VFORK)); break;
CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;