merges r28623 from trunk into ruby_1_9_2.

--
* missing/close.c: keep original errno.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28636 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/missing/close.c b/missing/close.c
index 7e743eb204..d87f9e3164 100644
--- a/missing/close.c
+++ b/missing/close.c
@@ -8,12 +8,15 @@ int
 ruby_getpeername(int s, struct sockaddr * name,
          socklen_t * namelen)
 {
+    int err = errno;
     errno = 0;
     s = getpeername(s, name, namelen);
     if (errno == ECONNRESET) {
 	errno = 0;
 	s = 0;
     }
+    else if (errno == 0)
+	errno = err;
     return s;
 }
 
@@ -21,35 +24,44 @@ int
 ruby_getsockname(int s, struct sockaddr * name,
          socklen_t * namelen)
 {
+    int err = errno;
     errno = 0;
     s = getsockname(s, name, namelen);
     if (errno == ECONNRESET) {
 	errno = 0;
 	s = 0;
     }
+    else if (errno == 0)
+	errno = err;
     return s;
 }
 
 int
 ruby_shutdown(int s, int how)
 {
+    int err = errno;
     errno = 0;
     s = shutdown(s, how);
     if (errno == ECONNRESET) {
 	errno = 0;
 	s = 0;
     }
+    else if (errno == 0)
+	errno = err;
     return s;
 }
 
 int
 ruby_close(int s)
 {
+    int err = errno;
     errno = 0;
     s = close(s);
     if (errno == ECONNRESET) {
 	errno = 0;
 	s = 0;
     }
+    else if (errno == 0)
+	errno = err;
     return s;
 }