Added cmp and readlink applets from Matt Kraai.

1 files changed, 49 insertions, 0 deletions

diff --git a/readlink.c b/readlink.c
new file mode 100644
index 000000000..5a798c0ea
--- /dev/null
+++ b/readlink.c
@@ -0,0 +1,49 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini readlink implementation for busybox
+ *
+ *
+ * Copyright (C) 2000 by Lineo, inc.
+ * Written by Matt Kraai <kraai@alumni.carnegiemellon.edu>
+ *
+ * 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 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "busybox.h"
+#include <errno.h>
+#include <unistd.h>
+
+int readlink_main(int argc, char **argv)
+{
+        char *buf = NULL;
+        int bufsize = 128, size = 128;
+
+        if (argc != 2)
+                usage(readlink_usage);
+
+        while (bufsize < size + 1) {
+                bufsize *= 2;
+                buf = xrealloc(buf, bufsize);
+                size = readlink(argv[1], buf, bufsize);
+                if (size == -1)
+                        fatalError("%s: %s\n", argv[1], strerror(errno));
+        }
+
+        buf[size] = '\0';
+        puts(buf);
+
+        return EXIT_SUCCESS;
+}