drm-lease-manager/main.c

   1 /* Copyright 2020-2021 IGEL Co., Ltd.
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #include "lease-manager.h"
  17 #include "lease-server.h"
  18 #include "log.h"
  19
  20 #include <assert.h>
  21 #include <getopt.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24
  25 static void usage(const char *progname)
  26 {
  27         printf("Usage: %s [OPTIONS] [<DRM device>]\n\n"
  28                "Options:\n"
  29                "-h, --help \tPrint this help\n"
  30                "-v, --verbose \tEnable verbose debug messages\n",
  31                progname);
  32 }
  33
  34 const char *opts = "vh";
  35 const struct option options[] = {
  36     {"help", no_argument, NULL, 'h'},
  37     {"verbose", no_argument, NULL, 'v'},
  38     {NULL, 0, NULL, 0},
  39 };
  40
  41 int main(int argc, char **argv)
  42 {
  43         char *device = "/dev/dri/card0";
  44
  45         bool debug_log = false;
  46
  47         int c;
  48         while ((c = getopt_long(argc, argv, opts, options, NULL)) != -1) {
  49                 int ret = EXIT_FAILURE;
  50                 switch (c) {
  51                 case 'v':
  52                         debug_log = true;
  53                         break;
  54                 case 'h':
  55                         ret = EXIT_SUCCESS;
  56                         /* fall through */
  57                 default:
  58                         usage(argv[0]);
  59                         return ret;
  60                 }
  61         }
  62
  63         if (optind < argc)
  64                 device = argv[optind];
  65
  66         dlm_log_enable_debug(debug_log);
  67
  68         struct lm *lm = lm_create(device);
  69         if (!lm) {
  70                 ERROR_LOG("DRM Lease initialization failed\n");
  71                 return EXIT_FAILURE;
  72         }
  73
  74         struct lease_handle **lease_handles = NULL;
  75         int count_ids = lm_get_lease_handles(lm, &lease_handles);
  76         assert(count_ids > 0);
  77
  78         struct ls *ls = ls_create(lease_handles, count_ids);
  79         if (!ls) {
  80                 lm_destroy(lm);
  81                 ERROR_LOG("Client socket initialization failed\n");
  82                 return EXIT_FAILURE;
  83         }
  84
  85         struct ls_req req;
  86         while (ls_get_request(ls, &req)) {
  87                 switch (req.type) {
  88                 case LS_REQ_GET_LEASE: {
  89                         int fd = lm_lease_grant(lm, req.lease_handle);
  90                         if (fd < 0) {
  91                                 ERROR_LOG(
  92                                     "Can't fulfill lease request: lease=%s\n",
  93                                     req.lease_handle->name);
  94                                 ls_disconnect_client(ls, req.server);
  95                                 break;
  96                         }
  97
  98                         if (!ls_send_fd(ls, req.server, fd)) {
  99                                 ERROR_LOG(
 100                                     "Client communication error: lease=%s\n",
 101                                     req.lease_handle->name);
 102                                 ls_disconnect_client(ls, req.server);
 103                                 lm_lease_revoke(lm, req.lease_handle);
 104                         }
 105                         break;
 106                 }
 107                 case LS_REQ_RELEASE_LEASE:
 108                         ls_disconnect_client(ls, req.server);
 109                         lm_lease_revoke(lm, req.lease_handle);
 110                         break;
 111                 default:
 112                         ERROR_LOG("Internal error: Invalid lease request\n");
 113                         goto done;
 114                 }
 115         }
 116 done:
 117         ls_destroy(ls);
 118         lm_destroy(lm);
 119         return EXIT_FAILURE;
 120 }