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| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-27 20:58:43 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-27 20:58:43 +0000 |
| commit | 27463101f15bee17d2f46642c48a7373bc6c595e (patch) | |
| tree | d542c7676a0da3b27271b60df27eab23e879368a /block-raw-posix.c | |
| parent | b8ae75538e8a9db54207e6bf3da484939bb5df7e (diff) | |
| download | qemu-27463101f15bee17d2f46642c48a7373bc6c595e.tar.gz qemu-27463101f15bee17d2f46642c48a7373bc6c595e.tar.bz2 qemu-27463101f15bee17d2f46642c48a7373bc6c595e.zip | |
Make compatfd fallback more robust
Be more friendly when signalfd() fails, and also add configure checks to detect
that syscall(SYS_signalfd) actually works. malc pointed out that some installs
do not have /usr/include/linux headers that are in sync with the glibc headers
so why SYS_signalfd is defined, it's #defined to _NR_signalfd which is not
defined in the /usr/include/linux header.
While this is a distro bug, it doesn't hurt to do a more thorough job in
detection.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5334 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'block-raw-posix.c')
| -rw-r--r-- | block-raw-posix.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/block-raw-posix.c b/block-raw-posix.c index 2875fa1bfc..267d6c07bd 100644 --- a/block-raw-posix.c +++ b/block-raw-posix.c @@ -584,6 +584,10 @@ static int posix_aio_init(void) s->first_aio = NULL; s->fd = qemu_signalfd(&mask); + if (s->fd == -1) { + fprintf(stderr, "failed to create signalfd\n"); + return -errno; + } fcntl(s->fd, F_SETFL, O_NONBLOCK); |