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From 0a3222338efc108c831fbdd719a47d35f4b0adcd Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
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<long>(ctx),
| ^~~~~~~~~~~~~~~~~
| io_getevents
Upstream-Staus: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
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<long>(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
|
