Previous to OpenBSD 6.3 [1], fcntl(F_SETFL) is not permitted on memory devices. Do not assert fcntl failures on OpenBSD. This fixes:
$ lm32-softmmu/qemu-system-lm32 assertion "f != -1" failed: file "util/oslib-posix.c", line 247, function "qemu_set_nonblock" Abort trap (core dumped) [1] The fix seems https://github.com/openbsd/src/commit/c2a35b387f9d3c "fcntl(F_SETFL) invokes the FIONBIO and FIOASYNC ioctls internally, so the memory devices (/dev/null, /dev/zero, etc) need to permit them." Signed-off-by: Philippe Mathieu-Daudé <phi...@redhat.com> --- util/oslib-posix.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 4ce1ba9ca4..064c3ae2f7 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -244,7 +244,9 @@ void qemu_set_nonblock(int fd) f = fcntl(fd, F_GETFL); assert(f != -1); f = fcntl(fd, F_SETFL, f | O_NONBLOCK); +#ifndef __OpenBSD__ assert(f != -1); +#endif } int socket_set_fast_reuse(int fd) -- 2.20.1
