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Fix: close all file descriptors when executed as daemon
[lttng-tools.git]
/
src
/
bin
/
lttng-consumerd
/
lttng-consumerd.c
diff --git
a/src/bin/lttng-consumerd/lttng-consumerd.c
b/src/bin/lttng-consumerd/lttng-consumerd.c
index 9f2f02feba03897b7462de3250c863ec2ec37b55..3bc700dc948594a937c2ef543a8cbe4c3d4212f7 100644
(file)
--- a/
src/bin/lttng-consumerd/lttng-consumerd.c
+++ b/
src/bin/lttng-consumerd/lttng-consumerd.c
@@
-263,11
+263,26
@@
int main(int argc, char **argv)
/* Daemonize */
if (opt_daemon) {
/* Daemonize */
if (opt_daemon) {
+ int i;
+
+ /*
+ * fork
+ * child: setsid, close FD 0, 1, 2, chdir /
+ * parent: exit (if fork is successful)
+ */
ret = daemon(0, 0);
if (ret < 0) {
ret = daemon(0, 0);
if (ret < 0) {
-
perror
("daemon");
+
PERROR
("daemon");
goto error;
}
goto error;
}
+ /*
+ * We are in the child. Make sure all other file
+ * descriptors are closed, in case we are called with
+ * more opened file descriptors than the standard ones.
+ */
+ for (i = 3; i < sysconf(_SC_OPEN_MAX); i++) {
+ (void) close(i);
+ }
}
if (strlen(command_sock_path) == 0) {
}
if (strlen(command_sock_path) == 0) {
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