sys/src/cmd/disk/kfscmd.c

   1 #include <u.h>
   2 #include <libc.h>
   3
   4 void
   5 main(int argc, char *argv[])
   6 {
   7         char *name, buf[4*1024];
   8         int fd, n, i, errs;
   9
  10         name = 0;
  11         ARGBEGIN{
  12         case 'n':
  13                 name = ARGF();
  14                 break;
  15         default:
  16                 fprint(2, "usage: kfscmd [-n server] commands\n");
  17                 exits("usage");
  18         }ARGEND
  19
  20         if(name)
  21                 snprint(buf, sizeof buf, "/srv/kfs.%s.cmd", name);
  22         else
  23                 strcpy(buf, "/srv/kfs.cmd");
  24         fd = open(buf, ORDWR);
  25         if(fd < 0){
  26                 fprint(2, "kfscmd: can't open commands file\n");
  27                 exits("commands file");
  28         }
  29
  30         errs = 0;
  31         for(i = 0; i < argc; i++){
  32                 if(write(fd, argv[i], strlen(argv[i])) != strlen(argv[i])){
  33                         fprint(2, "%s: error writing %s: %r", argv0, argv[i]);
  34                         errs++;
  35                         continue;
  36                 }
  37                 for(;;){
  38                         n = read(fd, buf, sizeof buf - 1);
  39                         if(n < 0){
  40                                 fprint(2, "%s: error executing %s: %r", argv0, argv[i]);
  41                                 errs++;
  42                                 break;
  43                         }
  44                         buf[n] = '\0';
  45                         if(strcmp(buf, "done") == 0 || strcmp(buf, "success") == 0)
  46                                 break;
  47                         if(strcmp(buf, "unknown command") == 0){
  48                                 errs++;
  49                                 print("kfscmd: command %s not recognized\n", argv[i]);
  50                                 break;
  51                         }
  52                         write(1, buf, n);
  53                 }
  54         }
  55         exits(errs ? "errors" : 0);
  56 }