From dedb199313d9cd1e53d1f629cf58145e3335152a Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 6 Nov 2005 11:18:57 +0000
Subject: * file.c (rb_file_s_readlink): readlink(2) on AIX fails with ERANGE
 if   buffer size is less than required.  fixed: [ruby-dev:27634]

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@9505 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 file.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'file.c')

diff --git a/file.c b/file.c
index c1a69575f..38db9d84b 100644
--- a/file.c
+++ b/file.c
@@ -1982,7 +1982,13 @@ rb_file_s_readlink(VALUE klass, VALUE path)
     rb_secure(2);
     FilePathValue(path);
     buf = xmalloc(size);
-    while ((rv = readlink(StringValueCStr(path), buf, size)) == size) {
+    for (;;) {
+	rv = readlink(RSTRING(path)->ptr, buf, size);
+#ifndef _AIX
+	if (rv != size) break;
+#else
+	if (rv > 0 || errno != ERANGE) break;
+#endif
 	size *= 2;
 	buf = xrealloc(buf, size);
     }
-- 
cgit