39 lines
1.4 KiB
Diff
39 lines
1.4 KiB
Diff
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From: Baruch Siach <baruch@tkos.co.il>
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Date: Fri, 29 Sep 2017 10:06:52 +0300
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Subject: [PATCH] Fix build with musl and older Linux kernel
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The musl libc carries its own copy of Linux system calls. When building
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with Linux headers older than v3.17, musl provides SYS_getrandom
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definition, but not GRND_NONBLOCK. This causes build failure for
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libressl and openntpd:
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getentropy_linux.c: In function 'getentropy_getrandom':
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getentropy_linux.c:205:42: error: 'GRND_NONBLOCK' undeclared (first use in this function)
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ret = syscall(SYS_getrandom, buf, len, GRND_NONBLOCK);
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^~~~~~~~~~~~~
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Define GRND_NONBLOCK locally when its definition is missing to fix the
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build. There should be no run-time effect. Older kernels return ENOSYS
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for unsupported syscall().
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[ from upstream pull request with file location changed ]
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Signed-off-by: Baruch Siach <baruch@tkos.co.il>
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---
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Upstream status: https://github.com/libressl-portable/openbsd/pull/82
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diff -Nuar libressl-2.5.5-orig/crypto/compat/getentropy_linux.c libressl-2.5.5/crypto/compat/getentropy_linux.c
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--- libressl-2.5.5-orig/crypto/compat/getentropy_linux.c 2017-07-09 13:59:48.000000000 +0300
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+++ libressl-2.5.5/crypto/compat/getentropy_linux.c 2017-09-29 10:03:32.447958829 +0300
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@@ -194,6 +194,11 @@
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}
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#ifdef SYS_getrandom
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+
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+#ifndef GRND_NONBLOCK
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+#define GRND_NONBLOCK 0x0001
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+#endif
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+
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static int
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getentropy_getrandom(void *buf, size_t len)
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{
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