ubase/mountpoint.c

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C
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/* See LICENSE file for copyright and license details. */
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#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "grabmntinfo.h"
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s [-q] target\n", argv0);
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}
int
main(int argc, char *argv[])
{
int i;
int qflag = 0;
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struct mntinfo *minfo = NULL;
int siz;
int ret = 0;
struct stat st1, st2;
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ARGBEGIN {
case 'q':
qflag = 1;
break;
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default:
usage();
} ARGEND;
if (argc < 1)
usage();
if (stat(argv[0], &st1) < 0)
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eprintf("stat %s:", argv[0]);
if (!S_ISDIR(st1.st_mode))
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eprintf("lstat %s: not a directory\n", argv[0]);
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siz = grabmntinfo(&minfo);
if (!siz)
eprintf("grabmntinfo:");
for (i = 0; i < siz; i++) {
if (stat(minfo[i].mntdir, &st2) < 0)
eprintf("stat %s:", minfo[i].mntdir);
if (st1.st_dev == st2.st_dev &&
st1.st_ino == st2.st_ino)
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break;
}
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free(minfo);
if (i == siz)
ret = 1;
if (!qflag)
printf("%s %s a mountpoint\n", argv[0],
!ret ? "is" : "is not");
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return ret;
}