X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/17119f584e90f494da54aa9e2d1d10227213d96b..bb1cbbe82a40a9cffb8d143bed2e3aa245595450:/fdflags.c

diff --git a/fdflags.c b/fdflags.c
index 6f401e4..af8663f 100644
--- a/fdflags.c
+++ b/fdflags.c
@@ -7,7 +7,7 @@
  * (c) 1999 Straylight/Edgeware
  */
 
-/*----- Licensing notice --------------------------------------------------* 
+/*----- Licensing notice --------------------------------------------------*
  *
  * This file is part of the mLib utilities library.
  *
@@ -15,12 +15,12 @@
  * it under the terms of the GNU Library General Public License as
  * published by the Free Software Foundation; either version 2 of the
  * License, or (at your option) any later version.
- * 
+ *
  * mLib is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU Library General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Library General Public
  * License along with mLib; if not, write to the Free
  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
@@ -59,14 +59,14 @@ int fdflags(int fd, unsigned fbic, unsigned fxor,
   if (fbic || fxor) {
     if ((f = fcntl(fd, F_GETFL)) == -1)
       return (-1);
-    ff = (f & fbic) ^ fxor;
+    ff = (f & ~fbic) ^ fxor;
     if (f != ff && fcntl(fd, F_SETFL, ff) == -1)
       return (-1);
   }
   if (fdbic || fdxor) {
     if ((f = fcntl(fd, F_GETFD)) == -1)
       return (-1);
-    ff = (f & fdbic) ^ fdxor;
+    ff = (f & ~fdbic) ^ fdxor;
     if (f != ff && fcntl(fd, F_SETFD, ff) == -1)
       return (-1);
   }