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-rw-r--r--tests/to.c50
1 files changed, 41 insertions, 9 deletions
diff --git a/tests/to.c b/tests/to.c
index 6511a54..6874bfd 100644
--- a/tests/to.c
+++ b/tests/to.c
@@ -1,22 +1,41 @@
+#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
+#include <signal.h>
+
+int volatile got_sigchld, got_sigalrm;
+
+void
+sighan (int sig)
+{
+ switch (sig)
+ {
+ case SIGCHLD:
+ got_sigchld = 1;
+ break;
+
+ case SIGALRM:
+ got_sigalrm = 1;
+ break;
+ }
+}
int
main (int argc, char **argv)
{
char *progname = argv[0];
unsigned long n;
char *p;
pid_t pid, ret;
int status;
-
+
if (argc < 3)
{
fprintf (stderr, "usage: %s TIMEOUT COMMAND ...\n", progname);
exit (1);
}
errno = 0;
@@ -27,48 +46,61 @@ main (int argc, char **argv)
exit (1);
}
argc -= 2;
argv += 2;
+ signal (SIGALRM, sighan);
+ signal (SIGCHLD, sighan);
+
pid = fork ();
if (pid == -1)
{
perror ("fork");
exit (127);
}
-
+
if (pid == 0)
{
execvp (argv[0], argv);
perror (argv[0]);
exit (127);
}
alarm (n);
+ while (1)
+ {
+ pause ();
+ if (got_sigchld)
+ {
+ alarm (0);
+ break;
+ }
+ if (got_sigalrm)
+ {
+ fprintf (stderr, "%s: timed out\n", progname);
+ kill (pid, SIGKILL);
+ exit (127);
+ }
+ }
+
ret = wait (&status);
- alarm (0);
if (ret != pid)
{
perror ("wait");
exit (127);
}
if (WIFEXITED (status))
return WEXITSTATUS (status);
-
+
if (WIFSIGNALED (status))
fprintf (stderr, "%s: %s terminated on signal %d\n", progname, argv[0],
WTERMSIG (status));
else if (WIFSTOPPED (status))
fprintf (stderr, "%s: %s stopped\n", progname, argv[0]);
else
fprintf (stderr, "%s: %s exited with unrecognized status %d\n",
progname, argv[0], status);
return 127;
}
-
-
-
-
-

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