busybox/miscutils/mountpoint.c
Rob Landley d921b2ecc0 Remove bb_ prefixes from xfuncs.c (and a few other places), consolidate
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only
had one user), clean up lots of #includes...  General cleanup pass.  What I've
been doing for the last couple days.

And it conflicts!  I've removed httpd.c from this checkin due to somebody else
touching that file.  It builds for me.  I have to catch a bus.  (Now you know
why I'm looking forward to Mercurial.)
2006-08-03 15:41:12 +00:00

67 lines
1.5 KiB
C

/* 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 opt = bb_getopt_ulflags(argc, argv, "qdx");
#define OPT_q (1)
#define OPT_d (2)
#define OPT_x (4)
if (optind != argc - 1)
bb_show_usage();
{
char *arg = argv[optind];
struct stat st;
if ( (opt & OPT_x && stat(arg, &st) == 0) || (lstat(arg, &st) == 0) ) {
if (opt & OPT_x) {
if (S_ISBLK(st.st_mode))
{
bb_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) {
short ret = (st_dev != st.st_dev) ||
(st_dev == st.st_dev && st_ino == st.st_ino);
if (opt & OPT_d)
bb_printf("%u:%u\n", major(st_dev), minor(st_dev));
else if (!(opt & OPT_q))
bb_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;
}
}