usr/utils/umount.c

/*
 * by rmk
 */
#include <sys/mount.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

char *progname;

int main(int argc, char *argv[])
{
	int c, flag = 0;

	progname = argv[0];

	do {
		c = getopt(argc, argv, "fli");
		if (c == EOF)
			break;
		switch (c) {
		case 'f':
			flag |= MNT_FORCE;
			break;
		case 'l':
			flag |= MNT_DETACH;
			break;
		case 'i':
			/* ignore for now; no support for umount helpers */
			break;
		case '?':
			fprintf(stderr, "%s: invalid option -%c\n",
				progname, optopt);
			exit(1);
		}
	} while (1);

	if (optind + 1 != argc) {
		fprintf(stderr, "Usage: %s [-f] [-l] [-i] mntpoint\n",
			progname);
		return 1;
	}

	if (umount2(argv[optind], flag) == -1) {
		perror("umount2");
		return 255;
	}

	return 0;
}
1	/*
2	* by rmk
3	*/
4	#include <sys/mount.h>
5	#include <errno.h>
6	#include <stdio.h>
7	#include <stdlib.h>
8	#include <string.h>
9	#include <unistd.h>
10
11	char *progname;
12
13	int main(int argc, char *argv[])
14	{
15	int c, flag = 0;
16
17	progname = argv[0];
18
19	do {
20	c = getopt(argc, argv, "fli");
21	if (c == EOF)
22	break;
23	switch (c) {
24	case 'f':
25	flag \|= MNT_FORCE;
26	break;
27	case 'l':
28	flag \|= MNT_DETACH;
29	break;
30	case 'i':
31	/* ignore for now; no support for umount helpers */
32	break;
33	case '?':
34	fprintf(stderr, "%s: invalid option -%c\n",
35	progname, optopt);
36	exit(1);
37	}
38	} while (1);
39
40	if (optind + 1 != argc) {
41	fprintf(stderr, "Usage: %s [-f] [-l] [-i] mntpoint\n",
42	progname);
43	return 1;
44	}
45
46	if (umount2(argv[optind], flag) == -1) {
47	perror("umount2");
48	return 255;
49	}
50
51	return 0;
52	}