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Viewing changes to touch/touch.c

  • Committer: Bazaar Package Importer
  • Author(s): Daniel Baumann
  • Date: 2006-01-25 15:33:00 UTC
  • Revision ID: james.westby@ubuntu.com-20060125153300-6hh4p9wx8iqqply5
Tags: upstream-2
Import upstream version 2

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touch/touch.c
 
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#include <u.h>
 
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#include <libc.h>
 
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int touch(int, char *);
 
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ulong 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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        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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                now = strtoul(EARGF(usage()), 0, 0);
 
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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 = 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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        close(fd);
 
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        return 0;
 
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}