[src/trunk]: src/lib/libc/stdio make sure we preserve errno.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0a1d61e385ed
branches:  trunk
changeset: 499793:0a1d61e385ed
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Nov 29 15:30:20 2000 +0000

description:
make sure we preserve errno.

diffstat:

 lib/libc/stdio/fopen.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (35 lines):

diff -r 3e2acdc5f5e6 -r 0a1d61e385ed lib/libc/stdio/fopen.c
--- a/lib/libc/stdio/fopen.c    Wed Nov 29 15:29:51 2000 +0000
+++ b/lib/libc/stdio/fopen.c    Wed Nov 29 15:30:20 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: fopen.c,v 1.9 2000/01/15 01:11:45 christos Exp $       */
+/*     $NetBSD: fopen.c,v 1.10 2000/11/29 15:30:20 christos Exp $      */
 
 /*-
  * Copyright (c) 1990, 1993
@@ -41,7 +41,7 @@
 #if 0
 static char sccsid[] = "@(#)fopen.c    8.1 (Berkeley) 6/4/93";
 #else
-__RCSID("$NetBSD: fopen.c,v 1.9 2000/01/15 01:11:45 christos Exp $");
+__RCSID("$NetBSD: fopen.c,v 1.10 2000/11/29 15:30:20 christos Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -73,12 +73,14 @@
        if (oflags & O_NONBLOCK) {
                struct stat st;
                if (fstat(f, &st) == -1) {
-                       close(f);
+                       int sverrno = errno;
+                       (void)close(f);
+                       errno = sverrno;
                        goto release;
                }
                if (!S_ISREG(st.st_mode)) {
+                       (void)close(f);
                        errno = EFTYPE;
-                       close(f);
                        goto release;
                }
        }