debian/patches/backup-vma-add-dump-config.patch

   1 Index: new/vma.c
   2 ===================================================================
   3 --- new.orig/vma.c      2014-11-20 08:47:30.000000000 +0100
   4 +++ new/vma.c   2014-11-20 08:47:47.000000000 +0100
   5 @@ -32,6 +32,7 @@
   6          "usage: vma command [command options]\n"
   7          "\n"
   8          "vma list <filename>\n"
   9 +        "vma config <filename> [-c config]\n"
  10          "vma create <filename> [-c config] <archive> pathname ...\n"
  11          "vma extract <filename> [-r <fifo>] <targetdir>\n"
  12          "vma verify <filename> [-v]\n"
  13 @@ -601,6 +602,67 @@
  14      return 0;
  15  }
  16
  17 +static int dump_config(int argc, char **argv)
  18 +{
  19 +    int c, ret = 0;
  20 +    const char *filename;
  21 +    const char *config_name = "qemu-server.conf";
  22 +
  23 +    for (;;) {
  24 +        c = getopt(argc, argv, "hc:");
  25 +        if (c == -1) {
  26 +            break;
  27 +        }
  28 +        switch (c) {
  29 +        case '?':
  30 +        case 'h':
  31 +            help();
  32 +            break;
  33 +        case 'c':
  34 +            config_name = optarg;
  35 +            break;
  36 +        default:
  37 +            help();
  38 +        }
  39 +    }
  40 +
  41 +    /* Get the filename */
  42 +    if ((optind + 1) != argc) {
  43 +        help();
  44 +    }
  45 +    filename = argv[optind++];
  46 +
  47 +    Error *errp = NULL;
  48 +    VmaReader *vmar = vma_reader_create(filename, &errp);
  49 +
  50 +    if (!vmar) {
  51 +        g_error("%s", error_get_pretty(errp));
  52 +    }
  53 +
  54 +    int found = 0;
  55 +    GList *l = vma_reader_get_config_data(vmar);
  56 +    while (l && l->data) {
  57 +        VmaConfigData *cdata = (VmaConfigData *)l->data;
  58 +        l = g_list_next(l);
  59 +        if (strcmp(cdata->name, config_name) == 0) {
  60 +            found = 1;
  61 +            fwrite(cdata->data,  cdata->len, 1, stdout);
  62 +            break;
  63 +        }
  64 +    }
  65 +
  66 +    vma_reader_destroy(vmar);
  67 +
  68 +    bdrv_close_all();
  69 +
  70 +    if (!found) {
  71 +        fprintf(stderr, "unable to find configuration data '%s'\n", config_name);
  72 +        return -1;
  73 +    }
  74 +
  75 +    return ret;
  76 +}
  77 +
  78  int main(int argc, char **argv)
  79  {
  80      const char *cmdname;
  81 @@ -630,6 +692,8 @@
  82          return extract_content(argc, argv);
  83      } else if (!strcmp(cmdname, "verify")) {
  84          return verify_content(argc, argv);
  85 +    } else if (!strcmp(cmdname, "config")) {
  86 +        return dump_config(argc, argv);
  87      }
  88
  89      help();