From 71d20ba411d3923934409936ba20f6ead8a6cbcd Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Tue, 11 Sep 2018 22:20:17 -0500
Subject: readlink: Report ENOSYS on dlsym failure

Signed-off-by: Samuel Holland <samuel@sholland.org>
---
 libgcompat/readlink.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'libgcompat')

diff --git a/libgcompat/readlink.c b/libgcompat/readlink.c
index 63def96..0db094c 100644
--- a/libgcompat/readlink.c
+++ b/libgcompat/readlink.c
@@ -1,4 +1,5 @@
 #include <dlfcn.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
 #include <stddef.h>
@@ -18,6 +19,7 @@ ssize_t readlink(const char *path, char *buf, size_t len)
 	if (real_readlink == NULL) {
 		real_readlink = dlsym(RTLD_NEXT, "readlink");
 		if (real_readlink == NULL) {
+			errno = ENOSYS;
 			return -1;
 		}
 	}
-- 
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