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 b7cb7453 2007-05-20 devnull int tflag;
 7 bc7cb1a1 2003-11-23 devnull 
 8 bc7cb1a1 2003-11-23 devnull void
 9 bc7cb1a1 2003-11-23 devnull usage(void)
10 bc7cb1a1 2003-11-23 devnull {
11 bc7cb1a1 2003-11-23 devnull 	fprint(2, "usage: touch [-c] [-t time] files\n");
12 bc7cb1a1 2003-11-23 devnull 	exits("usage");
13 bc7cb1a1 2003-11-23 devnull }
14 bc7cb1a1 2003-11-23 devnull 
15 bc7cb1a1 2003-11-23 devnull void
16 bc7cb1a1 2003-11-23 devnull main(int argc, char **argv)
17 bc7cb1a1 2003-11-23 devnull {
18 bc7cb1a1 2003-11-23 devnull 	int nocreate = 0;
19 bc7cb1a1 2003-11-23 devnull 	int status = 0;
20 bc7cb1a1 2003-11-23 devnull 
21 bc7cb1a1 2003-11-23 devnull 	now = time(0);
22 bc7cb1a1 2003-11-23 devnull 	ARGBEGIN{
23 bc7cb1a1 2003-11-23 devnull 	case 't':
24 b7cb7453 2007-05-20 devnull 		tflag = 1;
25 bc7cb1a1 2003-11-23 devnull 		now = strtoul(EARGF(usage()), 0, 0);
26 bc7cb1a1 2003-11-23 devnull 		break;
27 bc7cb1a1 2003-11-23 devnull 	case 'c':
28 bc7cb1a1 2003-11-23 devnull 		nocreate = 1;
29 bc7cb1a1 2003-11-23 devnull 		break;
30 fa325e9b 2020-01-10 cross 	default:
31 bc7cb1a1 2003-11-23 devnull 		usage();
32 bc7cb1a1 2003-11-23 devnull 	}ARGEND
33 bc7cb1a1 2003-11-23 devnull 
34 bc7cb1a1 2003-11-23 devnull 	if(!*argv)
35 bc7cb1a1 2003-11-23 devnull 		usage();
36 bc7cb1a1 2003-11-23 devnull 	while(*argv)
37 bc7cb1a1 2003-11-23 devnull 		status += touch(nocreate, *argv++);
38 bc7cb1a1 2003-11-23 devnull 	if(status)
39 bc7cb1a1 2003-11-23 devnull 		exits("touch");
40 bc7cb1a1 2003-11-23 devnull 	exits(0);
41 bc7cb1a1 2003-11-23 devnull }
42 bc7cb1a1 2003-11-23 devnull 
43 bc7cb1a1 2003-11-23 devnull int
44 bc7cb1a1 2003-11-23 devnull touch(int nocreate, char *name)
45 bc7cb1a1 2003-11-23 devnull {
46 bc7cb1a1 2003-11-23 devnull 	Dir stbuff;
47 bc7cb1a1 2003-11-23 devnull 	int fd;
48 bc7cb1a1 2003-11-23 devnull 
49 bc7cb1a1 2003-11-23 devnull 	nulldir(&stbuff);
50 bc7cb1a1 2003-11-23 devnull 	stbuff.mtime = now;
51 bc7cb1a1 2003-11-23 devnull 	if(dirwstat(name, &stbuff) >= 0)
52 bc7cb1a1 2003-11-23 devnull 		return 0;
53 bc7cb1a1 2003-11-23 devnull 	if(nocreate){
54 bc7cb1a1 2003-11-23 devnull 		fprint(2, "touch: %s: cannot wstat: %r\n", name);
55 bc7cb1a1 2003-11-23 devnull 		return 1;
56 bc7cb1a1 2003-11-23 devnull 	}
57 a1c43078 2020-08-08 crossd 	if((fd = create(name, OWRITE, 0666)) < 0) {
58 bc7cb1a1 2003-11-23 devnull 		fprint(2, "touch: %s: cannot create: %r\n", name);
59 bc7cb1a1 2003-11-23 devnull 		return 1;
60 bc7cb1a1 2003-11-23 devnull 	}
61 b7cb7453 2007-05-20 devnull 	if(tflag && dirfwstat(fd, &stbuff) < 0){
62 b7cb7453 2007-05-20 devnull 		fprint(2, "touch: %s: cannot wstat: %r\n", name);
63 b7cb7453 2007-05-20 devnull 		close(fd);
64 b7cb7453 2007-05-20 devnull 		return 1;
65 b7cb7453 2007-05-20 devnull 	}
66 bc7cb1a1 2003-11-23 devnull 	close(fd);
67 bc7cb1a1 2003-11-23 devnull 	return 0;
68 bc7cb1a1 2003-11-23 devnull }