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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /misc/tst-pselect.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
Diffstat (limited to 'misc/tst-pselect.c')
-rw-r--r--misc/tst-pselect.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/misc/tst-pselect.c b/misc/tst-pselect.c
new file mode 100644
index 0000000..35d51d8
--- /dev/null
+++ b/misc/tst-pselect.c
@@ -0,0 +1,128 @@
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/select.h>
+#include <sys/wait.h>
+
+
+static volatile int handler_called;
+
+static void
+handler (int sig)
+{
+ handler_called = 1;
+}
+
+
+static int
+do_test (void)
+{
+ struct sigaction sa;
+ sa.sa_handler = handler;
+ sa.sa_flags = 0;
+ sigemptyset (&sa.sa_mask);
+
+ if (sigaction (SIGUSR1, &sa, NULL) != 0)
+ {
+ puts ("sigaction failed");
+ return 1;
+ }
+
+ sa.sa_handler = SIG_IGN;
+ sa.sa_flags = SA_NOCLDWAIT;
+
+ if (sigaction (SIGCHLD, &sa, NULL) != 0)
+ {
+ puts ("2nd sigaction failed");
+ return 1;
+ }
+
+ if (sigblock (sigmask (SIGUSR1)) != 0)
+ {
+ puts ("sigblock failed");
+ return 1;
+ }
+
+ int fds[2][2];
+
+ if (pipe (fds[0]) != 0 || pipe (fds[1]) != 0)
+ {
+ puts ("pipe failed");
+ return 1;
+ }
+
+ fd_set rfds;
+ FD_ZERO (&rfds);
+
+ sigset_t ss;
+ sigprocmask (SIG_SETMASK, NULL, &ss);
+ sigdelset (&ss, SIGUSR1);
+
+ struct timespec to = { .tv_sec = 0, .tv_nsec = 500000000 };
+
+ pid_t parent = getpid ();
+ pid_t p = fork ();
+ if (p == 0)
+ {
+ close (fds[0][1]);
+ close (fds[1][0]);
+
+ FD_SET (fds[0][0], &rfds);
+
+ int e;
+ do
+ {
+ if (getppid () != parent)
+ exit (2);
+
+ errno = 0;
+ e = pselect (fds[0][0] + 1, &rfds, NULL, NULL, &to, &ss);
+ }
+ while (e == 0);
+
+ if (e != -1)
+ {
+ puts ("child: pselect did not fail");
+ return 0;
+ }
+ if (errno != EINTR)
+ {
+ puts ("child: pselect did not set errno to EINTR");
+ return 0;
+ }
+
+ TEMP_FAILURE_RETRY (write (fds[1][1], "foo", 3));
+
+ exit (0);
+ }
+
+ close (fds[0][0]);
+ close (fds[1][1]);
+
+ FD_SET (fds[1][0], &rfds);
+
+ kill (p, SIGUSR1);
+
+ int e = pselect (fds[1][0] + 1, &rfds, NULL, NULL, NULL, &ss);
+ if (e == -1)
+ {
+ puts ("parent: pselect failed");
+ return 1;
+ }
+ if (e != 1)
+ {
+ puts ("parent: pselect did not report readable fd");
+ return 1;
+ }
+ if (!FD_ISSET (fds[1][0], &rfds))
+ {
+ puts ("parent: pselect reports wrong fd");
+ return 1;
+ }
+
+ return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"