[PATCH] D90627: [sanitizer] Assume getrandom might not be supported by the kernel
Adhemerval Zanella via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Nov 2 09:51:28 PST 2020
zatrazz created this revision.
zatrazz added reviewers: kcc, dvyukov.
zatrazz added a project: Sanitizers.
Herald added a subscriber: Sanitizers.
zatrazz requested review of this revision.
It was added on kernel 3.17.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D90627
Files:
compiler-rt/test/sanitizer_common/TestCases/Posix/getrandom.c
Index: compiler-rt/test/sanitizer_common/TestCases/Posix/getrandom.c
===================================================================
--- compiler-rt/test/sanitizer_common/TestCases/Posix/getrandom.c
+++ compiler-rt/test/sanitizer_common/TestCases/Posix/getrandom.c
@@ -3,6 +3,7 @@
//
#include <sys/types.h>
+#include <errno.h>
#if !defined(__GLIBC_PREREQ)
#define __GLIBC_PREREQ(a, b) 0
@@ -21,6 +22,8 @@
ssize_t n = 1;
#if defined(HAS_GETRANDOM)
n = getrandom(buf, sizeof(buf), 0);
+ if (n == -1 && errno == ENOSYS)
+ n = 1;
#endif
return (int)(n <= 0);
}
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