#include <9pm/u.h>
#include <9pm/libc.h>

int touch(int, char *);

void
main(int argc, char **argv)
{
	int nocreate = 0;
	int status = 0;

	ARGBEGIN{
	case 'c':	nocreate = 1; break;
	default:	goto usage; break;
	}ARGEND
	if(!*argv){
usage:
		fprint(2, "usage: touch [-c] files\n");
		exits("usage");
	}
	while(*argv)
		status += touch(nocreate, *argv++);
	if(status)
		exits("touch");
	exits(0);
}

touch(int nocreate, char *name)
{
	Dir stbuff;
	int fd;

	nulldir(&stbuff);
	stbuff.mtime = time(0);
	if(dirwstat(name, &stbuff) >= 0)
		return 0;
	if(nocreate){
		fprint(2, "touch: %s: cannot wstat: %r\n", name);
		return 1;
	}
	if ((fd = create(name, OREAD, 0666)) < 0) {
		fprint(2, "touch: %s: cannot create: %r\n", name);
		return 1;
	}
	close(fd);
	return 0;
}