From: Daniel Wagner <daniel.wagner@xxxxxxxxxxxx>
kill(0, SIGINT) sends to all in the process group the signal
including the parent shell.
Instead remember the PIDs of all children and just send the signal
to these processes.
Reported-by: Dave Chinner <david@xxxxxxxxxxxxx>
Signed-off-by: Daniel Wagner <daniel.wagner@xxxxxxxxxxxx>
---
posix03.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/posix03.c b/posix03.c
index a36caa5..4ee130b 100644
--- a/posix03.c
+++ b/posix03.c
@@ -71,13 +71,18 @@ static int fcntl_unlock(int fd, off_t off, off_t len)
return fcntl(fd, F_SETLKW, &fl);
}
+/* The PIDs of all children */
+static pid_t *cpids;
+
static void
kill_children()
{
siginfo_t infop;
+ int i;
signal(SIGINT, SIG_IGN);
- kill(0, SIGINT);
+ for (i = 0; cpids[i]; i++)
+ kill(cpids[i], SIGINT);
while (waitid(P_ALL, 0, &infop, WEXITED) != -1);
}
@@ -161,14 +166,21 @@ int main(int argc, char *argv[])
signal(SIGINT, sighandler);
+ cpids = malloc((num + 1) * sizeof(pid_t));
+ if (!cpids)
+ err(1, "malloc");
+ cpids[num] = 0;
+
for (i = 0; i < num; i++) {
- switch (fork()) {
+ pid_t pid = fork();
+ switch (pid) {
case 0:
signal(SIGINT, SIG_DFL);
return do_child(lockfd, i, to_lockers[0], from_lockers[1]);
case -1:
err(1, "fork failed");
}
+ cpids[i] = pid;
}
close(to_lockers[0]);
@@ -208,5 +220,6 @@ int main(int argc, char *argv[])
printf("%ld.%09ld\n", total.tv_sec, total.tv_nsec);
kill_children();
+ free(cpids);
return 0;
}
--
2.5.5
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