-/* rename.c -- BSD compatible directory function for System V
- Copyright (C) 1988, 1990 Free Software Foundation, Inc.
+/* 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.
- This program is free software; you can redistribute it and/or modify
+ 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
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ 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
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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#ifdef HAVE_CONFIG_H
-#if defined (CONFIG_BROKETS)
-/* We use <config.h> instead of "config.h" so that a compilation
- using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
- (which it would do because it found this file in $srcdir). */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* written by Volker Borchert */
+
#include <config.h>
-#else
-#include "config.h"
-#endif
-#endif
+#undef rename
-#include <sys/types.h>
-#include <sys/stat.h>
+#if RENAME_DEST_EXISTS_BUG
+/* This replacement must come first, otherwise when cross
+ * compiling to Windows we will guess that it has the trailing
+ * slash bug and entirely miss this one. */
#include <errno.h>
-#ifndef STDC_HEADERS
-extern int errno;
-#endif
-#ifdef STAT_MACROS_BROKEN
-#undef S_ISDIR
-#endif /* STAT_MACROS_BROKEN. */
+#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;
-#if !defined(S_ISDIR) && defined(S_IFDIR)
-#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+ 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;
-#include "safe-stat.h"
+ default:
+ errno = EINVAL;
+ break;
+ }
+
+ return -1;
+}
+#elif RENAME_TRAILING_SLASH_BUG
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "dirname.h"
+#include "xalloc.h"
-/* Rename file FROM to file TO.
- Return 0 if successful, -1 if not. */
+/* Rename the file SRC to DST, removing any trailing
+ slashes from SRC. Needed for SunOS 4.1.1_U1. */
int
-rename (from, to)
- char *from;
- char *to;
+rpl_rename (char const *src, char const *dst)
{
- struct stat from_stats, to_stats;
- int pid, status;
+ char *src_temp;
+ int ret_val;
+ size_t s_len = strlen (src);
- if (SAFE_STAT (from, &from_stats))
- return -1;
-
- /* Be careful not to unlink `from' if it happens to be equal to `to' or
- (on filesystems that silently truncate filenames after 14 characters)
- if `from' and `to' share the significant characters. */
- if (SAFE_STAT (to, &to_stats))
+ if (s_len && src[s_len - 1] == '/')
{
- if (errno != ENOENT)
- return -1;
+ src_temp = xstrdup (src);
+ strip_trailing_slashes (src_temp);
}
else
- {
- if ((from_stats.st_dev == to_stats.st_dev)
- && (from_stats.st_ino == to_stats.st_dev))
- /* `from' and `to' designate the same file on that filesystem. */
- return 0;
+ src_temp = (char *) src;
- if (unlink (to) && errno != ENOENT)
- return -1;
- }
+ ret_val = rename (src_temp, dst);
- if (S_ISDIR (from_stats.st_mode))
- {
- /* Need a setuid root process to link and unlink directories. */
- pid = fork ();
- switch (pid)
- {
- case -1: /* Error. */
- error (1, errno, "cannot fork");
-
- case 0: /* Child. */
- execl (MVDIR, "mvdir", from, to, (char *) 0);
- error (255, errno, "cannot run `%s'", MVDIR);
-
- default: /* Parent. */
- while (wait (&status) != pid)
- /* Do nothing. */ ;
-
- errno = 0; /* mvdir printed the system error message. */
- if (status)
- return -1;
- }
- }
- else
- {
- if (link (from, to))
- return -1;
- if (unlink (from) && errno != ENOENT)
- {
- unlink (to);
- return -1;
- }
- }
- return 0;
+ if (src_temp != src)
+ free (src_temp);
+
+ return ret_val;
}
+#endif /* RENAME_TRAILING_SLASH_BUG */
projects / gnulib.git / blobdiff