liburing: Use libc mmap() wrapper instead of calling __NR_mmap syscall directly

Fixes build on arm and rv32

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Oleksandr Kravchuk <open.source@oleksandr-kravchuk.com>

meta-oe/recipes-support/liburing/liburing/0001-test-Use-syscall-wrappers-instead-of-using-syscall-2.patch

@@ -0,0 +1,59 @@
+From cb350a8989adbd65db574325d9a86d5437d800da Mon Sep 17 00:00:00 2001
+From: Guillem Jover <guillem@hadrons.org>
+Date: Mon, 13 Sep 2021 23:56:08 +0200
+Subject: [PATCH] test: Use syscall wrappers instead of using syscall(2) directly
+
+Some of these syscalls have different entry points depending on the
+architecture. Use the wrappers to avoid having to reimplement them
+portably.
+
+Fixes build failures on Debian armel and armhf builds.
+
+Upstream-Status: Backport [https://github.com/kraj/liburing/commit/cb350a8989adbd65db574325d9a86d5437d800da]
+Signed-off-by: Guillem Jover <guillem@hadrons.org>
+---
+ test/sqpoll-cancel-hang.c | 7 ++-----
+ 1 file changed, 2 insertions(+), 5 deletions(-)
+
+diff --git a/test/sqpoll-cancel-hang.c b/test/sqpoll-cancel-hang.c
+index c9032c8..e561478 100644
+--- a/test/sqpoll-cancel-hang.c
++++ b/test/sqpoll-cancel-hang.c
+@@ -4,7 +4,6 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <sys/mman.h>
+-#include <sys/syscall.h>
+ #include <sys/wait.h>
+ #include <time.h>
+ #include <unistd.h>
+@@ -29,8 +28,6 @@ static uint64_t current_time_ms(void)
+ 
+ #define IORING_OFF_SQES 0x10000000ULL
+ 
+-#define sys_io_uring_setup 425
+-
+ static void kill_and_wait(int pid, int* status)
+ {
+     kill(-pid, SIGKILL);
+@@ -53,7 +50,7 @@ a5)
+     void* vma2 = (void*)a3;
+     void** ring_ptr_out = (void**)a4;
+     void** sqes_ptr_out = (void**)a5;
+-    uint32_t fd_io_uring = syscall(sys_io_uring_setup, entries, setup_params);
++    uint32_t fd_io_uring = __sys_io_uring_setup(entries, setup_params);
+     uint32_t sq_ring_sz = setup_params->sq_off.array +
+ setup_params->sq_entries * sizeof(uint32_t);
+     uint32_t cq_ring_sz = setup_params->cq_off.cqes +
+@@ -135,7 +132,7 @@ void trigger_bug(void)
+ }
+ int main(void)
+ {
+-    syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
++    mmap((void *)0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
+     int pid = fork();
+     if (pid < 0)
+         exit(1);
+-- 
+2.33.1
+

meta-oe/recipes-support/liburing/liburing_2.1.bb

@@ -9,7 +9,9 @@ SECTION = "libs"
 LICENSE = "LGPLv2.1 | MIT"
 LIC_FILES_CHKSUM = "file://README;beginline=41;endline=44;md5=d51b5805e2a675685e6a66ca50904cf9"
 
-SRC_URI = "git://github.com/axboe/liburing.git;branch=master;protocol=https"
+SRC_URI = "git://github.com/axboe/liburing.git;branch=master;protocol=https \
+           file://0001-test-Use-syscall-wrappers-instead-of-using-syscall-2.patch \
+           "
 SRC_URI:append:libc-musl:riscv64 = " file://0001-do-not-build-examples.patch "
 SRC_URI:append:libc-musl:riscv32 = " file://0001-do-not-build-examples.patch "
 SRCREV = "41a61c97c2e3df4475c93fdf5026d575ce3f1377"