X-Git-Url: https://git.gag.com/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fdup.c;fp=lib%2Fdup.c;h=0a0b69ed4e918c5eec53920598f6ca09282afdc8;hb=dc84183747ce1703eb99685b5dbde1f65a143c06;hp=0000000000000000000000000000000000000000;hpb=a2016c1de6e4884f6c8ed5cc498f3bf821c25ca4;p=debian%2Fgzip
diff --git a/lib/dup.c b/lib/dup.c
new file mode 100644
index 0000000..0a0b69e
--- /dev/null
+++ b/lib/dup.c
@@ -0,0 +1,61 @@
+/* Duplicate an open file descriptor.
+
+ Copyright (C) 2011-2012 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see . */
+
+#include
+
+/* Specification. */
+#include
+
+#include
+
+#include "msvc-inval.h"
+
+#undef dup
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static inline int
+dup_nothrow (int fd)
+{
+ int result;
+
+ TRY_MSVC_INVAL
+ {
+ result = dup (fd);
+ }
+ CATCH_MSVC_INVAL
+ {
+ result = -1;
+ errno = EBADF;
+ }
+ DONE_MSVC_INVAL;
+
+ return result;
+}
+#else
+# define dup_nothrow dup
+#endif
+
+int
+rpl_dup (int fd)
+{
+ int result = dup_nothrow (fd);
+#if REPLACE_FCHDIR
+ if (result >= 0)
+ result = _gl_register_dup (fd, result);
+#endif
+ return result;
+}