From 0a3222338efc108c831fbdd719a47d35f4b0adcd Mon Sep 17 00:00:00 2001 From: Khem Raj Date: Wed, 18 Aug 2021 06:49:25 +0000 Subject: [PATCH] aio_linux: Check if syscall exists before using it Return -ENOSYS if not implememented, fixes build on arches like RISCV32 Fixes tpool/aio_linux.cc:63:20: error: '__NR_io_getevents' was not declared in this scope; did you mean 'io_getevents'? 63 | int ret= syscall(__NR_io_getevents, reinterpret_cast(ctx), | ^~~~~~~~~~~~~~~~~ | io_getevents Upstream-Staus: Pending Signed-off-by: Khem Raj --- tpool/aio_linux.cc | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tpool/aio_linux.cc b/tpool/aio_linux.cc index 4abc213..da75411 100644 --- a/tpool/aio_linux.cc +++ b/tpool/aio_linux.cc @@ -58,6 +58,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111 - 1301 USA*/ */ static int my_getevents(io_context_t ctx, long min_nr, long nr, io_event *ev) { +#ifdef __NR_io_getevents int saved_errno= errno; int ret= syscall(__NR_io_getevents, reinterpret_cast(ctx), min_nr, nr, ev, 0); @@ -67,6 +68,9 @@ static int my_getevents(io_context_t ctx, long min_nr, long nr, io_event *ev) errno= saved_errno; } return ret; +#else + return -ENOSYS; +#endif } -- 2.29.2