Don't leak file descriptors

We're leaking file descriptors to child processes. Set FD_CLOEXEC on file
descriptors that don't need to be passed to children to stop this misbehaviour.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/vl.c b/vl.c
index 0816ed7012..d6f196cff5 100644
--- a/vl.c
+++ b/vl.c
@@ -1243,7 +1243,7 @@ static int hpet_start_timer(struct qemu_alarm_timer *t)
     struct hpet_info info;
     int r, fd;
 
-    fd = open("/dev/hpet", O_RDONLY);
+    fd = qemu_open("/dev/hpet", O_RDONLY);
     if (fd < 0)
         return -1;
 
@@ -1292,7 +1292,7 @@ static int rtc_start_timer(struct qemu_alarm_timer *t)
     int rtc_fd;
     unsigned long current_rtc_freq = 0;
 
-    TFR(rtc_fd = open("/dev/rtc", O_RDONLY));
+    TFR(rtc_fd = qemu_open("/dev/rtc", O_RDONLY));
     if (rtc_fd < 0)
         return -1;
     ioctl(rtc_fd, RTC_IRQP_READ, &current_rtc_freq);
@@ -3337,7 +3337,7 @@ static int qemu_event_init(void)
     int err;
     int fds[2];
 
-    err = pipe(fds);
+    err = qemu_pipe(fds);
     if (err == -1)
         return -errno;
 
@@ -5507,6 +5507,9 @@ int main(int argc, char **argv, char **envp)
 	} else if (pid < 0)
             exit(1);
 
+	close(fds[0]);
+	qemu_set_cloexec(fds[1]);
+
 	setsid();
 
 	pid = fork();
@@ -5907,7 +5910,7 @@ int main(int argc, char **argv, char **envp)
 	    exit(1);
 
 	chdir("/");
-	TFR(fd = open("/dev/null", O_RDWR));
+	TFR(fd = qemu_open("/dev/null", O_RDWR));
 	if (fd == -1)
 	    exit(1);
     }