From: Stefan Maksimovic <stefan.maksimovic@rt-rk.com>
Date: Fri, 16 Aug 2019 23:23:21 +0000 (-0700)
Subject: memcheck/tests/sys-preadv2_pwritev2: Check whether these syscalls are supported
X-Git-Tag: VALGRIND_3_16_0~234
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f7483d1d8a8ade23123b498dfbd61d1c41d9f45;p=thirdparty%2Fvalgrind.git

memcheck/tests/sys-preadv2_pwritev2: Check whether these syscalls are supported

[ bvanassche: changed the order of check_PROGRAMS ]
---

diff --git a/.gitignore b/.gitignore
index 9ba42ee4ac..7c3d304435 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1093,6 +1093,7 @@
 /memcheck/tests/linux/.deps
 /memcheck/tests/linux/brk
 /memcheck/tests/linux/capget
+/memcheck/tests/linux/check_preadv2_pwritev2
 /memcheck/tests/linux/dlclose_leak
 /memcheck/tests/linux/dlclose_leak_so.so
 /memcheck/tests/linux/getregset
diff --git a/memcheck/tests/linux/Makefile.am b/memcheck/tests/linux/Makefile.am
index e13325869d..14d4a07162 100644
--- a/memcheck/tests/linux/Makefile.am
+++ b/memcheck/tests/linux/Makefile.am
@@ -33,6 +33,7 @@ EXTRA_DIST = \
 check_PROGRAMS = \
 	brk \
 	capget \
+	check_preadv2_pwritev2 \
 	dlclose_leak dlclose_leak_so.so \
 	ioctl-tiocsig \
 	getregset \
diff --git a/memcheck/tests/linux/check_preadv2_pwritev2.c b/memcheck/tests/linux/check_preadv2_pwritev2.c
new file mode 100644
index 0000000000..5333679e9d
--- /dev/null
+++ b/memcheck/tests/linux/check_preadv2_pwritev2.c
@@ -0,0 +1,19 @@
+#include <sys/syscall.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stddef.h>
+
+int main(int argc, char **argv)
+{
+   errno = 0;
+   int has_preadv2 = 0;
+   int has_pwritev2 = 0;
+
+   syscall(__NR_preadv2, 0, NULL, 0, 0, 0);
+   has_preadv2 = errno != ENOSYS;
+
+   syscall(__NR_pwritev2, 0, NULL, 0, 0, 0);
+   has_pwritev2 = errno != ENOSYS;
+
+   return !(has_preadv2 && has_pwritev2);
+}
diff --git a/memcheck/tests/linux/sys-preadv2_pwritev2.vgtest b/memcheck/tests/linux/sys-preadv2_pwritev2.vgtest
index 5cd23aacda..33e32522d5 100644
--- a/memcheck/tests/linux/sys-preadv2_pwritev2.vgtest
+++ b/memcheck/tests/linux/sys-preadv2_pwritev2.vgtest
@@ -1,3 +1,4 @@
 prereq: test -e sys-preadv2_pwritev2
+prereq: ./check_preadv2_pwritev2
 prog: sys-preadv2_pwritev2
 vgopts: -q