1 bc7cb1a1 2003-11-23 devnull #include <u.h>
 2 bc7cb1a1 2003-11-23 devnull #include <libc.h>
 3 bc7cb1a1 2003-11-23 devnull 
 4 bc7cb1a1 2003-11-23 devnull int touch(int, char *);
 5 bc7cb1a1 2003-11-23 devnull ulong now;
 6 bc7cb1a1 2003-11-23 devnull 
 7 bc7cb1a1 2003-11-23 devnull void
 8 bc7cb1a1 2003-11-23 devnull usage(void)
 9 bc7cb1a1 2003-11-23 devnull {
10 bc7cb1a1 2003-11-23 devnull 	fprint(2, "usage: touch [-c] [-t time] files\n");
11 bc7cb1a1 2003-11-23 devnull 	exits("usage");
12 bc7cb1a1 2003-11-23 devnull }
13 bc7cb1a1 2003-11-23 devnull 
14 bc7cb1a1 2003-11-23 devnull void
15 bc7cb1a1 2003-11-23 devnull main(int argc, char **argv)
16 bc7cb1a1 2003-11-23 devnull {
17 bc7cb1a1 2003-11-23 devnull 	int nocreate = 0;
18 bc7cb1a1 2003-11-23 devnull 	int status = 0;
19 bc7cb1a1 2003-11-23 devnull 
20 bc7cb1a1 2003-11-23 devnull 	now = time(0);
21 bc7cb1a1 2003-11-23 devnull 	ARGBEGIN{
22 bc7cb1a1 2003-11-23 devnull 	case 't':
23 bc7cb1a1 2003-11-23 devnull 		now = strtoul(EARGF(usage()), 0, 0);
24 bc7cb1a1 2003-11-23 devnull 		break;
25 bc7cb1a1 2003-11-23 devnull 	case 'c':
26 bc7cb1a1 2003-11-23 devnull 		nocreate = 1;
27 bc7cb1a1 2003-11-23 devnull 		break;
28 bc7cb1a1 2003-11-23 devnull 	default:	
29 bc7cb1a1 2003-11-23 devnull 		usage();
30 bc7cb1a1 2003-11-23 devnull 	}ARGEND
31 bc7cb1a1 2003-11-23 devnull 
32 bc7cb1a1 2003-11-23 devnull 	if(!*argv)
33 bc7cb1a1 2003-11-23 devnull 		usage();
34 bc7cb1a1 2003-11-23 devnull 	while(*argv)
35 bc7cb1a1 2003-11-23 devnull 		status += touch(nocreate, *argv++);
36 bc7cb1a1 2003-11-23 devnull 	if(status)
37 bc7cb1a1 2003-11-23 devnull 		exits("touch");
38 bc7cb1a1 2003-11-23 devnull 	exits(0);
39 bc7cb1a1 2003-11-23 devnull }
40 bc7cb1a1 2003-11-23 devnull 
41 bc7cb1a1 2003-11-23 devnull int
42 bc7cb1a1 2003-11-23 devnull touch(int nocreate, char *name)
43 bc7cb1a1 2003-11-23 devnull {
44 bc7cb1a1 2003-11-23 devnull 	Dir stbuff;
45 bc7cb1a1 2003-11-23 devnull 	int fd;
46 bc7cb1a1 2003-11-23 devnull 
47 bc7cb1a1 2003-11-23 devnull 	nulldir(&stbuff);
48 bc7cb1a1 2003-11-23 devnull 	stbuff.mtime = now;
49 bc7cb1a1 2003-11-23 devnull 	if(dirwstat(name, &stbuff) >= 0)
50 bc7cb1a1 2003-11-23 devnull 		return 0;
51 bc7cb1a1 2003-11-23 devnull 	if(nocreate){
52 bc7cb1a1 2003-11-23 devnull 		fprint(2, "touch: %s: cannot wstat: %r\n", name);
53 bc7cb1a1 2003-11-23 devnull 		return 1;
54 bc7cb1a1 2003-11-23 devnull 	}
55 bc7cb1a1 2003-11-23 devnull 	if ((fd = create(name, OREAD, 0666)) < 0) {
56 bc7cb1a1 2003-11-23 devnull 		fprint(2, "touch: %s: cannot create: %r\n", name);
57 bc7cb1a1 2003-11-23 devnull 		return 1;
58 bc7cb1a1 2003-11-23 devnull 	}
59 bc7cb1a1 2003-11-23 devnull 	dirfwstat(fd, &stbuff);
60 bc7cb1a1 2003-11-23 devnull 	close(fd);
61 bc7cb1a1 2003-11-23 devnull 	return 0;
62 bc7cb1a1 2003-11-23 devnull }