76 lines
1.3 KiB
C
76 lines
1.3 KiB
C
/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#include <u.h>
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#include <lib9.h>
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int touch(int, char *);
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uint32_t now;
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void
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usage(void)
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{
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fprint(2, "usage: touch [-c] [-t time] files\n");
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exits("usage");
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}
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void
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main(int argc, char **argv)
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{
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char *t, *s;
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int nocreate = 0;
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int status = 0;
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now = time(0);
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ARGBEGIN{
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case 't':
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t = EARGF(usage());
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now = strtoul(t, &s, 0);
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if(s == t || *s != '\0')
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usage();
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break;
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case 'c':
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nocreate = 1;
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break;
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default:
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usage();
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}ARGEND
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if(!*argv)
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usage();
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while(*argv)
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status += touch(nocreate, *argv++);
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if(status)
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exits("touch");
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exits(0);
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}
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int
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touch(int nocreate, char *name)
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{
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Dir stbuff;
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int fd;
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nulldir(&stbuff);
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stbuff.mtime = now;
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if(dirwstat(name, &stbuff) >= 0)
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return 0;
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if(nocreate){
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fprint(2, "touch: %s: cannot wstat: %r\n", name);
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return 1;
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}
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if((fd = sys_create(name, OREAD, 0666)) < 0){
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fprint(2, "touch: %s: cannot create: %r\n", name);
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return 1;
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}
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dirfwstat(fd, &stbuff);
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sys_close(fd);
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return 0;
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}
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