From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 31 Aug 2013 19:44:58 +0000 (-0400)
Subject: make realpath use O_PATH when opening the file
X-Git-Tag: v0.9.14~56
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=27b4923ba00f0a7511c7ebf5f19313d6313052e9;p=oweals%2Fmusl.git

make realpath use O_PATH when opening the file

this avoids failure if the file is not readable and avoids odd
behavior for device nodes, etc. on old kernels that lack O_PATH, the
old behavior (O_RDONLY) will naturally happen as the fallback.
---

diff --git a/src/misc/realpath.c b/src/misc/realpath.c
index d238ed01..2b846497 100644
--- a/src/misc/realpath.c
+++ b/src/misc/realpath.c
@@ -21,7 +21,7 @@ char *realpath(const char *restrict filename, char *restrict resolved)
 		return 0;
 	}
 
-	fd = open(filename, O_RDONLY|O_NONBLOCK|O_CLOEXEC);
+	fd = open(filename, O_PATH|O_NONBLOCK|O_CLOEXEC);
 	if (fd < 0) return 0;
 	__procfdname(buf, fd);