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-rw-r--r--lib/fdopen.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/lib/fdopen.c b/lib/fdopen.c
new file mode 100644
index 0000000..b0f13fa
--- /dev/null
+++ b/lib/fdopen.c
@@ -0,0 +1,69 @@
+/* Open a stream with a given file descriptor.
+ Copyright (C) 2011-2020 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 <https://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <stdio.h>
+
+#include <errno.h>
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#undef fdopen
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static FILE *
+fdopen_nothrow (int fd, const char *mode)
+{
+ FILE *result;
+
+ TRY_MSVC_INVAL
+ {
+ result = fdopen (fd, mode);
+ }
+ CATCH_MSVC_INVAL
+ {
+ result = NULL;
+ }
+ DONE_MSVC_INVAL;
+
+ return result;
+}
+#else
+# define fdopen_nothrow fdopen
+#endif
+
+FILE *
+rpl_fdopen (int fd, const char *mode)
+{
+ int saved_errno = errno;
+ FILE *fp;
+
+ errno = 0;
+ fp = fdopen_nothrow (fd, mode);
+ if (fp == NULL)
+ {
+ if (errno == 0)
+ errno = EBADF;
+ }
+ else
+ errno = saved_errno;
+
+ return fp;
+}