From: Lennart Poettering <lennart@poettering.net>
Date: Sun, 10 May 2020 09:14:10 +0000 (+0200)
Subject: random-util: use ERRNO_IS_NOT_SUPPORTED() macro
X-Git-Tag: v246-rc1~393^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2b55464523adbb3732eb632ac2a21b685935642;p=thirdparty%2Fsystemd.git

random-util: use ERRNO_IS_NOT_SUPPORTED() macro

Some container mgr or sandbox solution might block it with an unexpected
error code, hence let's be tolerant here.
---

diff --git a/src/basic/random-util.c b/src/basic/random-util.c
index 363a1f71513..c32e6e2aac9 100644
--- a/src/basic/random-util.c
+++ b/src/basic/random-util.c
@@ -19,6 +19,7 @@
 #endif
 
 #include "alloc-util.h"
+#include "errno-util.h"
 #include "fd-util.h"
 #include "fileio.h"
 #include "io-util.h"
@@ -237,7 +238,7 @@ int genuine_random_bytes(void *p, size_t n, RandomFlags flags) {
                                 have_syscall = true;
                                 return -EIO;
 
-                        } else if (errno == ENOSYS) {
+                        } else if (ERRNO_IS_NOT_SUPPORTED(errno)) {
                                 /* We lack the syscall, continue with reading from /dev/urandom. */
                                 have_syscall = false;
                                 break;