40 lines
1.2 KiB
Diff
40 lines
1.2 KiB
Diff
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From 200a9669fbf6f06894e4243cccc9fc11a1a6073a Mon Sep 17 00:00:00 2001
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From: Denys Vlasenko <vda.linux@googlemail.com>
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Date: Mon, 10 Apr 2023 17:26:04 +0200
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Subject: [PATCH] seedrng: fix for glibc <= 2.24 not providing getrandom()
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Upstream: https://git.busybox.net/busybox/commit/?id=200a9669fbf6f06894e4243cccc9fc11a1a6073a
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---
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miscutils/seedrng.c | 14 ++++++++++++++
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1 file changed, 14 insertions(+)
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diff --git a/miscutils/seedrng.c b/miscutils/seedrng.c
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index 967741dc7..7cc855141 100644
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--- a/miscutils/seedrng.c
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+++ b/miscutils/seedrng.c
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@@ -45,6 +45,20 @@
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#include <sys/random.h>
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#include <sys/file.h>
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+/* Fix up glibc <= 2.24 not having getrandom() */
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+#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 24
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+#include <sys/syscall.h>
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+# define getrandom(...) bb_getrandom(__VA_ARGS__)
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+static ssize_t getrandom(void *buffer, size_t length, unsigned flags)
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+{
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+# if defined(__NR_getrandom)
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+ return syscall(__NR_getrandom, buffer, length, flags);
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+# else
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+ return ENOSYS;
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+# endif
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+}
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+#endif
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+
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#ifndef GRND_INSECURE
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#define GRND_INSECURE 0x0004 /* Apparently some headers don't ship with this yet. */
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#endif
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--
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2.39.1
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