diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2011-10-13 18:45:37 +0100 |
|---|---|---|
| committer | Andrzej Zaborowski <andrew.zaborowski@intel.com> | 2011-10-21 18:01:35 +0200 |
| commit | 7f84c1272b601be88daeb828ec1890890c7aae25 (patch) | |
| tree | 2fe17da7738d5bfd0b6ff165981b746be084845e /compatfd.c | |
| parent | 1386d4c0f5ce4c4391f2024a36c77eb8fb152e90 (diff) | |
compatfd.c: Don't pass NULL pointer to SYS_signalfd
Don't pass a NULL pointer in to SYS_signalfd in qemu_signalfd_available():
this isn't valid and Valgrind complains about it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
Diffstat (limited to 'compatfd.c')
| -rw-r--r-- | compatfd.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/compatfd.c b/compatfd.c index 31654c62a6..02306a4f71 100644 --- a/compatfd.c +++ b/compatfd.c @@ -119,9 +119,17 @@ int qemu_signalfd(const sigset_t *mask) bool qemu_signalfd_available(void) { #ifdef CONFIG_SIGNALFD + sigset_t mask; + int fd; + bool ok; + sigemptyset(&mask); errno = 0; - syscall(SYS_signalfd, -1, NULL, _NSIG / 8); - return errno != ENOSYS; + fd = syscall(SYS_signalfd, -1, &mask, _NSIG / 8); + ok = (errno != ENOSYS); + if (fd >= 0) { + close(fd); + } + return ok; #else return false; #endif |