-/* Work around the bug in some systems whereby rename fails when the source
- file has a trailing slash. The rename functions of SunOS 4.1.1_U1 and
- mips-dec-ultrix4.4 have this bug.
+/* Work around rename bugs in some systems. On SunOS 4.1.1_U1
+ and mips-dec-ultrix4.4, rename fails when the source file has
+ a trailing slash. On mingw, rename fails when the destination
+ exists.
- Copyright (C) 2001, 2002, 2003, 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003, 2005, 2006, 2009 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
/* written by Volker Borchert */
#include <config.h>
-#undef rename
#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "dirname.h"
-#include "xalloc.h"
+#undef rename
+
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+/* The mingw rename has problems with trailing slashes; it also
+ requires use of native Windows calls to allow atomic renames over
+ existing files. */
+
+# include <errno.h>
+
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+
+/* Rename the file SRC to DST. This replacement is necessary on
+ Windows, on which the system rename function will not replace
+ an existing DST. */
+int
+rpl_rename (char const *src, char const *dst)
+{
+ int error;
+
+ /* MoveFileEx works if SRC is a directory without any flags,
+ but fails with MOVEFILE_REPLACE_EXISTING, so try without
+ flags first. */
+ if (MoveFileEx (src, dst, 0))
+ return 0;
+
+ /* Retry with MOVEFILE_REPLACE_EXISTING if the move failed
+ * due to the destination already existing. */
+ error = GetLastError ();
+ if (error == ERROR_FILE_EXISTS || error == ERROR_ALREADY_EXISTS)
+ {
+ if (MoveFileEx (src, dst, MOVEFILE_REPLACE_EXISTING))
+ return 0;
+
+ error = GetLastError ();
+ }
+
+ switch (error)
+ {
+ case ERROR_FILE_NOT_FOUND:
+ case ERROR_PATH_NOT_FOUND:
+ case ERROR_BAD_PATHNAME:
+ case ERROR_DIRECTORY:
+ errno = ENOENT;
+ break;
+
+ case ERROR_ACCESS_DENIED:
+ case ERROR_SHARING_VIOLATION:
+ errno = EACCES;
+ break;
+
+ case ERROR_OUTOFMEMORY:
+ errno = ENOMEM;
+ break;
+
+ case ERROR_CURRENT_DIRECTORY:
+ errno = EBUSY;
+ break;
+
+ case ERROR_NOT_SAME_DEVICE:
+ errno = EXDEV;
+ break;
+
+ case ERROR_WRITE_PROTECT:
+ errno = EROFS;
+ break;
+
+ case ERROR_WRITE_FAULT:
+ case ERROR_READ_FAULT:
+ case ERROR_GEN_FAILURE:
+ errno = EIO;
+ break;
+
+ case ERROR_HANDLE_DISK_FULL:
+ case ERROR_DISK_FULL:
+ case ERROR_DISK_TOO_FRAGMENTED:
+ errno = ENOSPC;
+ break;
+
+ case ERROR_FILE_EXISTS:
+ case ERROR_ALREADY_EXISTS:
+ errno = EEXIST;
+ break;
+
+ case ERROR_BUFFER_OVERFLOW:
+ case ERROR_FILENAME_EXCED_RANGE:
+ errno = ENAMETOOLONG;
+ break;
+
+ case ERROR_INVALID_NAME:
+ case ERROR_DELETE_PENDING:
+ errno = EPERM; /* ? */
+ break;
+
+# ifndef ERROR_FILE_TOO_LARGE
+/* This value is documented but not defined in all versions of windows.h. */
+# define ERROR_FILE_TOO_LARGE 223
+# endif
+ case ERROR_FILE_TOO_LARGE:
+ errno = EFBIG;
+ break;
+
+ default:
+ errno = EINVAL;
+ break;
+ }
+
+ return -1;
+}
+
+#else /* ! W32 platform */
+
+# if RENAME_DEST_EXISTS_BUG
+# error Please report your platform and this message to bug-gnulib@gnu.org.
+# elif RENAME_TRAILING_SLASH_BUG
+# include <stdio.h>
+# include <stdlib.h>
+# include <string.h>
+
+# include "dirname.h"
+# include "xalloc.h"
/* Rename the file SRC to DST, removing any trailing
slashes from SRC. Needed for SunOS 4.1.1_U1. */
return ret_val;
}
+# endif /* RENAME_TRAILING_SLASH_BUG */
+#endif /* ! W32 platform */