1 files changed, 144 insertions, 0 deletions
diff --git a/librols/rename.c b/librols/rename.c
new file mode 100644
index 0000000..dca60ea
--- /dev/null
+++ b/librols/rename.c
@@ -0,0 +1,144 @@
+/*
+ * This file has been modified for the cdrkit suite.
+ *
+ * The behaviour and appearence of the program code below can differ to a major
+ * extent from the version distributed by the original author(s).
+ *
+ * For details, see Changelog file distributed with the cdrkit package. If you
+ * received this file from another source then ask the distributing person for
+ * a log of modifications.
+ *
+ */
+
+/* @(#)rename.c	1.6 04/09/04 Copyright 1998-2003 J. Schilling */
+/*
+ *	rename() for old systems that don't have it.
+ *
+ *	Copyright (c) 1998-2003 J. Schilling
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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; see the file COPYING.  If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#define	rename	__nothing__
+#include <mconfig.h>
+
+#ifndef	HAVE_RENAME
+
+#include <stdio.h>	/* XXX not OK but needed for js_xx() in schily.h */
+#include <unixstd.h>
+#include <strdefs.h>
+#include <statdefs.h>
+#include <maxpath.h>
+#include <standard.h>
+#include <utypes.h>
+#include <schily.h>
+#include <errno.h>
+#undef	rename
+#include <libport.h>
+
+#ifndef	MAXPATHNAME
+#define	MAXPATHNAME	1024
+#endif
+
+#if	MAXPATHNAME < 1024
+#undef	MAXPATHNAME
+#define	MAXPATHNAME	1024
+#endif
+
+#define	MAXNAME	MAXPATHNAME
+
+#define	FILEDESC struct stat
+
+#ifndef	HAVE_LSTAT
+#define	lstat	stat
+#endif
+
+EXPORT int
+rename(old, new)
+	const char	*old;
+	const char	*new;
+{
+	char	nname[MAXNAME];
+	char	bakname[MAXNAME];
+	char	strpid[32];
+	int	strplen;
+	BOOL	savpresent = FALSE;
+	BOOL	newpresent = FALSE;
+	int	serrno;
+	FILEDESC ostat;
+	FILEDESC xstat;
+
+	serrno = geterrno();
+
+	if (lstat(old, &ostat) < 0)
+		return (-1);
+
+	if (lstat(new, &xstat) >= 0) {
+		newpresent = TRUE;
+		if (ostat.st_dev == xstat.st_dev &&
+		    ostat.st_ino == xstat.st_ino)
+			return (0);		/* old == new we are done */
+	}
+
+	strplen = snprintf(strpid, sizeof (strpid), ".%lld",
+							(Llong)getpid());
+
+	if (strlen(new) <= (MAXNAME-strplen) ||
+	    strchr(&new[MAXNAME-strplen], '/') == NULL) {
+		/*
+		 * Save old version of file 'new'.
+		 */
+		strncpy(nname, new, MAXNAME-strplen);
+		nname[MAXNAME-strplen] = '\0';
+		snprintf(bakname, sizeof (bakname), "%s%s", nname, strpid);
+		unlink(bakname);
+		if (link(new, bakname) >= 0)
+			savpresent = TRUE;
+	}
+
+	if (newpresent) {
+		if (rmdir(new) < 0) {
+			if (geterrno() == ENOTDIR) {
+				if (unlink(new) < 0)
+					return (-1);
+			} else {
+				return (-1);
+			}
+		}
+	}
+
+	/*
+	 * Now add 'new' name to 'old'.
+	 */
+	if (link(old, new) < 0) {
+		serrno = geterrno();
+		/*
+		 * Make sure not to loose old version of 'new'.
+		 */
+		if (savpresent) {
+			unlink(new);
+			link(bakname, new);
+			unlink(bakname);
+		}
+		seterrno(serrno);
+		return (-1);
+	}
+	if (unlink(old) < 0)
+		return (-1);
+	unlink(bakname);		/* Fails in most cases...	*/
+	seterrno(serrno);		/* ...so restore errno		*/
+	return (0);
+}
+#endif	/* HAVE_RENAME */