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| #define _GNU_SOURCE
| #include <assert.h>
| #include <errno.h>
| #include <fcntl.h>
| #include <linux/types.h>
| #include <sched.h>
| #include <signal.h>
| #include <stdio.h>
| #include <stdlib.h>
| #include <string.h>
| #include <syscall.h>
| #include <sys/wait.h>
|
| #include "../kselftest_harness.h"
| #include "../pidfd/pidfd.h"
|
| /*
| * Regression test for:
| * 35f71bc0a09a ("fork: report pid reservation failure properly")
| * b26ebfe12f34 ("pid: Fix error return value in some cases")
| */
| TEST(regression_enomem)
| {
| pid_t pid;
|
| if (geteuid())
| EXPECT_EQ(0, unshare(CLONE_NEWUSER));
|
| EXPECT_EQ(0, unshare(CLONE_NEWPID));
|
| pid = fork();
| ASSERT_GE(pid, 0);
|
| if (pid == 0)
| exit(EXIT_SUCCESS);
|
| EXPECT_EQ(0, wait_for_pid(pid));
|
| pid = fork();
| ASSERT_LT(pid, 0);
| ASSERT_EQ(errno, ENOMEM);
| }
|
| TEST_HARNESS_MAIN
|
|
