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Diffstat (limited to 'i/pc104/initrd/conf/busybox/miscutils/mountpoint.c')
-rw-r--r--i/pc104/initrd/conf/busybox/miscutils/mountpoint.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/miscutils/mountpoint.c b/i/pc104/initrd/conf/busybox/miscutils/mountpoint.c
new file mode 100644
index 0000000..e380154
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/miscutils/mountpoint.c
@@ -0,0 +1,66 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * mountpoint implementation for busybox
+ *
+ * Copyright (C) 2005 Bernhard Fischer
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ *
+ * Based on sysvinit's mountpoint
+ */
+
+#include "busybox.h"
+
+int mountpoint_main(int argc, char **argv);
+int mountpoint_main(int argc, char **argv)
+{
+ struct stat st;
+ char *arg;
+ int opt = getopt32(argc, argv, "qdx");
+#define OPT_q (1)
+#define OPT_d (2)
+#define OPT_x (4)
+
+ if (optind != argc - 1)
+ bb_show_usage();
+
+ arg = argv[optind];
+
+ if ( (opt & OPT_x && stat(arg, &st) == 0) || (lstat(arg, &st) == 0) ) {
+ 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;
+ } else {
+ if (opt & OPT_q)
+ putchar('\n');
+ else
+ bb_error_msg("%s: not a block device", arg);
+ }
+ return EXIT_FAILURE;
+ } else
+ 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 ret = (st_dev != st.st_dev) ||
+ (st_dev == st.st_dev && st_ino == st.st_ino);
+ if (opt & OPT_d)
+ printf("%u:%u\n", major(st_dev), minor(st_dev));
+ else if (!(opt & OPT_q))
+ printf("%s is %sa mountpoint\n", arg, ret?"":"not ");
+ return !ret;
+ }
+ } else {
+ if (!(opt & OPT_q))
+ bb_error_msg("%s: not a directory", arg);
+ return EXIT_FAILURE;
+ }
+ }
+ if (!(opt & OPT_q))
+ bb_perror_msg("%s", arg);
+ return EXIT_FAILURE;
+}