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 #ifdef __ia64__
  45   extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
  46                        size_t __child_stack_size, int __flags,
  47                        void *__arg, ...);
  48   char st[256 * 1024] __attribute__ ((aligned));
  49   pid_t p = __clone2 (f, st, sizeof (st), TEST_CLONE_FLAGS, 0);
  50 #else
  51   char st[128 * 1024] __attribute__ ((aligned));
  52 # if _STACK_GROWS_DOWN
  53   pid_t p = clone (f, st + sizeof (st), TEST_CLONE_FLAGS, 0);
  54 # elif _STACK_GROWS_UP
  55   pid_t p = clone (f, st, TEST_CLONE_FLAGS, 0);
  56 # else
  57 #  error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
  58 # endif
  59 #endif
  60   if (p == -1)
  61     {
  62       printf("clone failed: %m\n");
  63       return 1;
  64     }
  65   printf ("new thread: %d\n", (int) p);
  66
  67   siginfo_t si;
  68   do
  69     if (sigwaitinfo (&ss, &si) < 0)
  70       {
  71         printf("sigwaitinfo failed: %m\n");
  72         kill (p, SIGKILL);
  73         return 1;
  74       }
  75   while  (si.si_signo != sig || si.si_code != SI_QUEUE);
  76
  77   int e;
  78   if (waitpid (p, &e, __WCLONE) != p)
  79     {
  80       puts ("waitpid failed");
  81       kill (p, SIGKILL);
  82       return 1;
  83     }
  84   if (!WIFEXITED (e))
  85     {
  86       if (WIFSIGNALED (e))
  87         printf ("died from signal %s\n", strsignal (WTERMSIG (e)));
  88       else
  89         puts ("did not terminate correctly");
  90       return 1;
  91     }
  92   if (WEXITSTATUS (e) != 0)
  93     {
  94       printf ("exit code %d\n", WEXITSTATUS (e));
  95       return 1;
  96     }
  97
  98   if (si.si_int != (int) p)
  99     {
 100       printf ("expected PID %d, got si_int %d\n", (int) p, si.si_int);
 101       kill (p, SIGKILL);
 102       return 1;
 103     }
 104
 105   if (si.si_pid != p)
 106     {
 107       printf ("expected PID %d, got si_pid %d\n", (int) p, (int) si.si_pid);
 108       kill (p, SIGKILL);
 109       return 1;
 110     }
 111
 112   if (getpid () != mypid)
 113     {
 114       puts ("my PID changed");
 115       return 1;
 116     }
 117
 118   return 0;
 119 }
 120
 121 #define TEST_FUNCTION do_test ()
 122 #include "../test-skeleton.c"