sysdeps/unix/sysv/linux/tst-getpid1.c

   1 #include <sched.h>
   2 #include <signal.h>
   3 #include <string.h>
   4 #include <stdio.h>
   5 #include <unistd.h>
   6 #include <sys/types.h>
   7 #include <sys/wait.h>
   8 #include <stackinfo.h>
   9
  10 #ifndef TEST_CLONE_FLAGS
  11 #define TEST_CLONE_FLAGS 0
  12 #endif
  13
  14 static int sig;
  15
  16 static int
  17 f (void *a)
  18 {
  19   puts ("in f");
  20   union sigval sival;
  21   sival.sival_int = getpid ();
  22   printf ("pid = %d\n", sival.sival_int);
  23   if (sigqueue (getppid (), sig, sival) != 0)
  24     return 1;
  25   return 0;
  26 }
  27
  28
  29 static int
  30 do_test (void)
  31 {
  32   int mypid = getpid ();
  33
  34   sig = SIGRTMIN;
  35   sigset_t ss;
  36   sigemptyset (&ss);
  37   sigaddset (&ss, sig);
  38   if (sigprocmask (SIG_BLOCK, &ss, NULL) != 0)
  39     {
  40       printf ("sigprocmask failed: %m\n");
  41       return 1;
  42     }
  43
  44   char st[128 * 1024] __attribute__ ((aligned));
  45 # if _STACK_GROWS_DOWN
  46   pid_t p = clone (f, st + sizeof (st), TEST_CLONE_FLAGS, 0);
  47 # elif _STACK_GROWS_UP
  48   pid_t p = clone (f, st, TEST_CLONE_FLAGS, 0);
  49 # else
  50 #  error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
  51 # endif
  52   if (p == -1)
  53     {
  54       printf("clone failed: %m\n");
  55       return 1;
  56     }
  57   printf ("new thread: %d\n", (int) p);
  58
  59   siginfo_t si;
  60   do
  61     if (sigwaitinfo (&ss, &si) < 0)
  62       {
  63         printf("sigwaitinfo failed: %m\n");
  64         kill (p, SIGKILL);
  65         return 1;
  66       }
  67   while  (si.si_signo != sig || si.si_code != SI_QUEUE);
  68
  69   int e;
  70   if (waitpid (p, &e, __WCLONE) != p)
  71     {
  72       puts ("waitpid failed");
  73       kill (p, SIGKILL);
  74       return 1;
  75     }
  76   if (!WIFEXITED (e))
  77     {
  78       if (WIFSIGNALED (e))
  79         printf ("died from signal %s\n", strsignal (WTERMSIG (e)));
  80       else
  81         puts ("did not terminate correctly");
  82       return 1;
  83     }
  84   if (WEXITSTATUS (e) != 0)
  85     {
  86       printf ("exit code %d\n", WEXITSTATUS (e));
  87       return 1;
  88     }
  89
  90   if (si.si_int != (int) p)
  91     {
  92       printf ("expected PID %d, got si_int %d\n", (int) p, si.si_int);
  93       kill (p, SIGKILL);
  94       return 1;
  95     }
  96
  97   if (si.si_pid != p)
  98     {
  99       printf ("expected PID %d, got si_pid %d\n", (int) p, (int) si.si_pid);
 100       kill (p, SIGKILL);
 101       return 1;
 102     }
 103
 104   if (getpid () != mypid)
 105     {
 106       puts ("my PID changed");
 107       return 1;
 108     }
 109
 110   return 0;
 111 }
 112
 113 #define TEST_FUNCTION do_test ()
 114 #include "../test-skeleton.c"