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Don't leak file descriptors

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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>
This commit is contained in:
Kevin Wolf 2009-12-02 12:24:42 +01:00 • committed by Anthony Liguori
parent 12c09b8ce2
commit 40ff6d7e8d
20 changed files with 178 additions and 34 deletions
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11
vl.c
View file

@ -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);
}