56b0b5134d
musl provides its own SYS_getrandom definition, but not GRND_NONBLOCK. This breaks the build with kernel headers older than v3.17. Add a patch adding a local definition of GRND_NONBLOCK to fix the build. The getentropy_linux.c file is in upstream tarball, but not in its git repository. It originates from OpenBSD. For this reason the patch is against the tarball, but not git formatted. Fixes: http://autobuild.buildroot.net/results/623/6235ddc095bc1984439e7339d590b11581a3e257/ http://autobuild.buildroot.net/results/648/648e7c91edcf893fa780de9bb44c05f5f842a2e8/ http://autobuild.buildroot.net/results/7da/7da71263a6e9b780031f1f6185c760d11dfc994e/ Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
39 lines
1.4 KiB
Diff
39 lines
1.4 KiB
Diff
From: Baruch Siach <baruch@tkos.co.il>
|
|
Date: Fri, 29 Sep 2017 10:06:52 +0300
|
|
Subject: [PATCH] Fix build with musl and older Linux kernel
|
|
|
|
The musl libc carries its own copy of Linux system calls. When building
|
|
with Linux headers older than v3.17, musl provides SYS_getrandom
|
|
definition, but not GRND_NONBLOCK. This causes build failure for
|
|
libressl and openntpd:
|
|
|
|
getentropy_linux.c: In function 'getentropy_getrandom':
|
|
getentropy_linux.c:205:42: error: 'GRND_NONBLOCK' undeclared (first use in this function)
|
|
ret = syscall(SYS_getrandom, buf, len, GRND_NONBLOCK);
|
|
^~~~~~~~~~~~~
|
|
|
|
Define GRND_NONBLOCK locally when its definition is missing to fix the
|
|
build. There should be no run-time effect. Older kernels return ENOSYS
|
|
for unsupported syscall().
|
|
|
|
[ from upstream pull request with file location changed ]
|
|
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
|
|
---
|
|
Upstream status: https://github.com/libressl-portable/openbsd/pull/82
|
|
|
|
diff -Nuar openntpd-6.2p2-orig/compat/getentropy_linux.c openntpd-6.2p2/compat/getentropy_linux.c
|
|
--- openntpd-6.2p2-orig/compat/getentropy_linux.c 2017-09-07 22:12:02.000000000 +0300
|
|
+++ openntpd-6.2p2/compat/getentropy_linux.c 2017-09-29 11:54:54.856245770 +0300
|
|
@@ -194,6 +194,11 @@
|
|
}
|
|
|
|
#ifdef SYS_getrandom
|
|
+
|
|
+#ifndef GRND_NONBLOCK
|
|
+#define GRND_NONBLOCK 0x0001
|
|
+#endif
|
|
+
|
|
static int
|
|
getentropy_getrandom(void *buf, size_t len)
|
|
{
|