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-rw-r--r--lib/close.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/lib/close.c b/lib/close.c
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+++ b/lib/close.c
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+/* close replacement.
+ Copyright (C) 2008-2020 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 <unistd.h>
+
+#include <errno.h>
+
+#include "fd-hook.h"
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+# include "msvc-inval.h"
+#endif
+
+#undef close
+
+#if defined _WIN32 && !defined __CYGWIN__
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+close_nothrow (int fd)
+{
+ int result;
+
+ TRY_MSVC_INVAL
+ {
+ result = _close (fd);
+ }
+ CATCH_MSVC_INVAL
+ {
+ result = -1;
+ errno = EBADF;
+ }
+ DONE_MSVC_INVAL;
+
+ return result;
+}
+# else
+# define close_nothrow _close
+# endif
+#else
+# define close_nothrow close
+#endif
+
+/* Override close() to call into other gnulib modules. */
+
+int
+rpl_close (int fd)
+{
+#if WINDOWS_SOCKETS
+ int retval = execute_all_close_hooks (close_nothrow, fd);
+#else
+ int retval = close_nothrow (fd);
+#endif
+
+#if REPLACE_FCHDIR
+ if (retval >= 0)
+ _gl_unregister_fd (fd);
+#endif
+
+ return retval;
+}