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https://github.com/checkpoint-restore/criu.git
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403a74c7ba
execlp() fails when we run vfork00 test inside namespace because we don't have '/bin/true' there. Instead of execlp() in vfork-child we can just _exit(). Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andrew Vagin <avagin@virtuozzo.com> Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
80 lines
1.5 KiB
C
80 lines
1.5 KiB
C
#include <errno.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <string.h>
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#include "zdtmtst.h"
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const char *test_doc = "Block migration by a pending (non-exec()-ed) vfork()";
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const char *test_author = "Pavel Emelianov <xemul@sw.ru>";
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int main(int argc, char ** argv)
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{
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int ret = 0;
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pid_t pid;
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test_init(argc, argv);
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/* vfork() won't let us control the test, so fork() first, and vfork()
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* in the child */
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pid = fork();
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if (pid < 0) {
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pr_err("fork failed: %m");
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exit(1);
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}
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if (pid == 0) {
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int ret2;
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pid = vfork();
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if (pid < 0)
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ret = errno;
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/* wait for signal in _both_ branches */
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test_waitsig();
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/* vforked guy shouldn't return, hence we _exit() */
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if (pid == 0)
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_exit(0);
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if (wait(&ret2) != pid)
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ret = errno;
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_exit(ret);
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}
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test_daemon();
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test_waitsig();
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/* signal the whole process group, because our child is suspended until
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* the grand-child has exec()-ed, but we don't know the pid of the
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* latter */
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if (kill(0, SIGTERM)) {
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fail("terminating the children failed: %m");
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exit(1);
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}
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if (wait(&ret) != pid) {
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fail("wait() returned wrong pid: %m");
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exit(1);
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}
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if (WIFEXITED(ret)) {
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ret = WEXITSTATUS(ret);
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if (ret) {
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fail("child exited with nonzero code %d (%s)", ret, strerror(ret));
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exit(1);
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}
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}
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if (WIFSIGNALED(ret)) {
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fail("child exited on unexpected signal %d", WTERMSIG(ret));
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exit(1);
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}
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pass();
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return 0;
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}
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