/* Duplicate an open file descriptor.
- Copyright (C) 2011-2013 Free Software Foundation, Inc.
+ Copyright (C) 2011-2018 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
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 <http://www.gnu.org/licenses/>. */
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#include <errno.h>
-#include "msvc-inval.h"
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
#undef dup
return result;
}
+#elif defined __KLIBC__
+# include <fcntl.h>
+# include <sys/stat.h>
+
+# include <InnoTekLIBC/backend.h>
+
+static int
+dup_nothrow (int fd)
+{
+ int dupfd;
+ struct stat sbuf;
+
+ dupfd = dup (fd);
+ if (dupfd == -1 && errno == ENOTSUP \
+ && !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
+ {
+ char path[_MAX_PATH];
+
+ /* Get a path from fd */
+ if (!__libc_Back_ioFHToPath (fd, path, sizeof (path)))
+ dupfd = open (path, O_RDONLY);
+ }
+
+ return dupfd;
+}
#else
# define dup_nothrow dup
#endif