From 4aca87515a5083ae0e31ce3177189fd43b6d05ac Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Sat, 3 Jan 2015 13:58:15 +0100
Subject: patch to Vanilla Tomato 1.28

---
 release/src/router/busybox/miscutils/mountpoint.c | 72 +++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 release/src/router/busybox/miscutils/mountpoint.c

(limited to 'release/src/router/busybox/miscutils/mountpoint.c')

diff --git a/release/src/router/busybox/miscutils/mountpoint.c b/release/src/router/busybox/miscutils/mountpoint.c
new file mode 100644
index 00000000..b541ce28
--- /dev/null
+++ b/release/src/router/busybox/miscutils/mountpoint.c
@@ -0,0 +1,72 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * mountpoint implementation for busybox
+ *
+ * Copyright (C) 2005 Bernhard Reutner-Fischer
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ *
+ * Based on sysvinit's mountpoint
+ */
+
+#include "libbb.h"
+
+int mountpoint_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int mountpoint_main(int argc UNUSED_PARAM, char **argv)
+{
+	struct stat st;
+	const char *msg;
+	char *arg;
+	int rc, opt;
+
+	opt_complementary = "=1"; /* must have one argument */
+	opt = getopt32(argv, "qdxn");
+#define OPT_q (1)
+#define OPT_d (2)
+#define OPT_x (4)
+#define OPT_n (8)
+	arg = argv[optind];
+	msg = "%s";
+
+	rc = (opt & OPT_x) ? stat(arg, &st) : lstat(arg, &st);
+	if (rc != 0)
+		goto err;
+
+	if (opt & OPT_x) {
+		if (S_ISBLK(st.st_mode)) {
+			printf("%u:%u\n", major(st.st_rdev),
+						minor(st.st_rdev));
+			return EXIT_SUCCESS;
+		}
+		errno = 0; /* make perror_msg work as error_msg */
+		msg = "%s: not a block device";
+		goto err;
+	}
+
+	errno = ENOTDIR;
+	if (S_ISDIR(st.st_mode)) {
+		dev_t st_dev = st.st_dev;
+		ino_t st_ino = st.st_ino;
+		char *p = xasprintf("%s/..", arg);
+
+		if (stat(p, &st) == 0) {
+			//int is_mnt = (st_dev != st.st_dev) || (st_dev == st.st_dev && st_ino == st.st_ino);
+			int is_not_mnt = (st_dev == st.st_dev) && (st_ino != st.st_ino);
+
+			if (opt & OPT_d)
+				printf("%u:%u\n", major(st_dev), minor(st_dev));
+			if (opt & OPT_n)
+				printf("%s %s\n", find_block_device(arg), arg);
+			if (!(opt & (OPT_q | OPT_d | OPT_n)))
+				printf("%s is %sa mountpoint\n", arg, is_not_mnt ? "not " : "");
+			return is_not_mnt;
+		}
+		arg = p;
+		/* else: stat had set errno, just fall through */
+	}
+
+ err:
+	if (!(opt & OPT_q))
+		bb_perror_msg(msg, arg);
+	return EXIT_FAILURE;
+}
-- 
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