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#include <u.h>
#include <libc.h>
int touch(int, char *);
ulong now;
int tflag;
void
usage(void)
{
fprint(2, "usage: touch [-c] [-t time] files\n");
exits("usage");
}
void
main(int argc, char **argv)
{
int nocreate = 0;
int status = 0;
now = time(0);
ARGBEGIN{
case 't':
tflag = 1;
now = strtoul(EARGF(usage()), 0, 0);
break;
case 'c':
nocreate = 1;
break;
default:
usage();
}ARGEND
if(!*argv)
usage();
while(*argv)
status += touch(nocreate, *argv++);
if(status)
exits("touch");
exits(0);
}
int
touch(int nocreate, char *name)
{
Dir stbuff;
int fd;
nulldir(&stbuff);
stbuff.mtime = now;
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;
}
if(tflag && dirfwstat(fd, &stbuff) < 0){
fprint(2, "touch: %s: cannot wstat: %r\n", name);
close(fd);
return 1;
}
close(fd);
return 0;
}
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