1 files changed, 65 insertions, 0 deletions
diff --git a/lib/permstring.c b/lib/permstring.c
new file mode 100644
index 0000000..ab8e26c
--- /dev/null
+++ b/lib/permstring.c
@@ -0,0 +1,65 @@
+/*
+ * A single utility routine.
+ *
+ * Copyright (C) 1996 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2001 Martin Pool <mbp@samba.org>
+ * Copyright (C) 2003-2019 Wayne Davison
+ *
+ * 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, visit the http://fsf.org website.
+ */
+
+#include "rsync.h"
+
+/* Produce a string representation of Unix mode bits like that used by ls(1).
+ * The "buf" buffer must be at least 11 characters. */
+void permstring(char *perms, mode_t mode)
+{
+	static const char *perm_map = "rwxrwxrwx";
+	int i;
+
+	strlcpy(perms, "----------", 11);
+
+	for (i = 0; i < 9; i++) {
+		if (mode & (1 << i))
+			perms[9-i] = perm_map[8-i];
+	}
+
+	/* Handle setuid/sticky bits.  You might think the indices are
+	 * off by one, but remember there's a type char at the
+	 * start.  */
+	if (mode & S_ISUID)
+		perms[3] = (mode & S_IXUSR) ? 's' : 'S';
+
+	if (mode & S_ISGID)
+		perms[6] = (mode & S_IXGRP) ? 's' : 'S';
+
+#ifdef S_ISVTX
+	if (mode & S_ISVTX)
+		perms[9] = (mode & S_IXOTH) ? 't' : 'T';
+#endif
+
+	if (S_ISDIR(mode))
+		perms[0] = 'd';
+	else if (S_ISLNK(mode))
+		perms[0] = 'l';
+	else if (S_ISBLK(mode))
+		perms[0] = 'b';
+	else if (S_ISCHR(mode))
+		perms[0] = 'c';
+	else if (S_ISSOCK(mode))
+		perms[0] = 's';
+	else if (S_ISFIFO(mode))
+		perms[0] = 'p';
+}