src/tbm_drm_helper_client.c

   1 /**************************************************************************
   2
   3 libtbm
   4
   5 Copyright 2012 Samsung Electronics co., Ltd. All Rights Reserved.
   6
   7 Contact: SooChan Lim <sc1.lim@samsung.com>, Sangjin Lee <lsj119@samsung.com>
   8 Boram Park <boram1288.park@samsung.com>, Changyeon Lee <cyeon.lee@samsung.com>
   9
  10 Permission is hereby granted, free of charge, to any person obtaining a
  11 copy of this software and associated documentation files (the
  12 "Software"), to deal in the Software without restriction, including
  13 without limitation the rights to use, copy, modify, merge, publish,
  14 distribute, sub license, and/or sell copies of the Software, and to
  15 permit persons to whom the Software is furnished to do so, subject to
  16 the following conditions:
  17
  18 The above copyright notice and this permission notice (including the
  19 next paragraph) shall be included in all copies or substantial portions
  20 of the Software.
  21
  22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  23 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  25 IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  26 ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  27 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  28 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29
  30 **************************************************************************/
  31
  32 #define WL_HIDE_DEPRECATED
  33
  34 #include "config.h"
  35
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <stddef.h>
  40 #include <unistd.h>
  41 #include <fcntl.h>
  42
  43 #include "tbm_bufmgr_int.h"
  44
  45 #include "wayland-tbm-drm-auth-client-protocol.h"
  46
  47 struct wayland_tbm_drm_auth_client {
  48         struct wl_display *display;
  49         struct wl_tbm_drm_auth *wl_tbm_drm_auth;
  50         int auth_fd;
  51         char *device;
  52         uint32_t capabilities;
  53 };
  54
  55 static int tbm_drm_fd = -1;
  56
  57 /* LCOV_EXCL_START */
  58 static void
  59 handle_tbm_drm_authentication_info(void *data, struct wl_tbm_drm_auth *wl_tbm_drm_auth, const char *device_name, uint32_t capabilities, int32_t auth_fd)
  60 {
  61         struct wayland_tbm_drm_auth_client *tbm_drm_client = (struct wayland_tbm_drm_auth_client *)data;
  62
  63         /* client authentication infomation */
  64         tbm_drm_client->auth_fd = auth_fd;
  65         tbm_drm_client->capabilities = capabilities;
  66         if (device_name)
  67             tbm_drm_client->device = strdup(device_name);
  68 }
  69
  70 static const struct wl_tbm_drm_auth_listener wl_tbm_drm_auth_client_listener = {
  71         handle_tbm_drm_authentication_info
  72 };
  73
  74 static void
  75 _wayland_tbm_drm_auth_client_registry_handle_global(void *data, struct wl_registry *registry, uint32_t name, const char *interface, uint32_t version)
  76 {
  77         struct wayland_tbm_drm_auth_client *tbm_drm_client = (struct wayland_tbm_drm_auth_client *)data;
  78
  79         if (!strcmp(interface, "wl_tbm_drm_auth")) {
  80                 tbm_drm_client->wl_tbm_drm_auth = wl_registry_bind(registry, name, &wl_tbm_drm_auth_interface, version);
  81                 TBM_RETURN_IF_FAIL(tbm_drm_client->wl_tbm_drm_auth != NULL);
  82
  83                 wl_tbm_drm_auth_add_listener(tbm_drm_client->wl_tbm_drm_auth, &wl_tbm_drm_auth_client_listener, tbm_drm_client);
  84         }
  85 }
  86
  87 static const struct wl_registry_listener registry_listener = {
  88         _wayland_tbm_drm_auth_client_registry_handle_global,
  89         NULL
  90 };
  91
  92 int
  93 tbm_drm_helper_get_auth_info(int *auth_fd, char **device, uint32_t *capabilities)
  94 {
  95         struct wl_display *display;
  96         struct wl_registry *wl_registry;
  97         struct wayland_tbm_drm_auth_client *tbm_drm_client;
  98
  99         tbm_drm_client = calloc(1, sizeof(struct wayland_tbm_drm_auth_client));
 100         TBM_RETURN_VAL_IF_FAIL(tbm_drm_client != NULL, 0);
 101
 102         tbm_drm_client->auth_fd = -1;
 103
 104         display = wl_display_connect("tbm-drm-auth");
 105         if (!display) {
 106                 TBM_ERR("Failed to connect display\n");
 107                 free(tbm_drm_client);
 108
 109                 return 0;
 110         }
 111
 112         tbm_drm_client->display = display;
 113
 114         wl_registry = wl_display_get_registry(display);
 115         if (!wl_registry) {
 116                 TBM_ERR("Failed to get registry\n");
 117                 wl_display_disconnect(display);
 118                 free(tbm_drm_client);
 119
 120                 return 0;
 121         }
 122
 123         wl_registry_add_listener(wl_registry, &registry_listener, tbm_drm_client);
 124         if (wl_display_roundtrip(display) < 0) { //For Gloabl registry
 125                 TBM_ERR("Failed to wl_display_roundtrip for global registry\n");
 126                 wl_registry_destroy(wl_registry);
 127                 wl_display_disconnect(display);
 128                 free(tbm_drm_client);
 129                 return 0;
 130         }
 131
 132         if (!tbm_drm_client->wl_tbm_drm_auth) {
 133                 TBM_ERR("Failed to get wl_tbm_drm_auth interface\n");
 134                 wl_registry_destroy(wl_registry);
 135                 wl_display_disconnect(display);
 136                 free(tbm_drm_client);
 137
 138                 return 0;
 139         }
 140
 141         wl_tbm_drm_auth_get_authentication_info(tbm_drm_client->wl_tbm_drm_auth);
 142         if (wl_display_roundtrip(display) < 0) {
 143                 TBM_ERR("Failed to wl_display_roundtrip get auth info\n");
 144                 wl_tbm_drm_auth_set_user_data(tbm_drm_client->wl_tbm_drm_auth, NULL);
 145                 wl_tbm_drm_auth_destroy(tbm_drm_client->wl_tbm_drm_auth);
 146                 wl_registry_destroy(wl_registry);
 147                 wl_display_disconnect(display);
 148                 free(tbm_drm_client);
 149                 return 0;
 150         }
 151
 152         if (tbm_drm_client->auth_fd < 0) {
 153                 TBM_ERR("Failed to get auth info\n");
 154                 wl_tbm_drm_auth_set_user_data(tbm_drm_client->wl_tbm_drm_auth, NULL);
 155                 wl_tbm_drm_auth_destroy(tbm_drm_client->wl_tbm_drm_auth);
 156                 wl_registry_destroy(wl_registry);
 157                 wl_display_disconnect(display);
 158                 free(tbm_drm_client);
 159
 160                 return 0;
 161         }
 162
 163         if (auth_fd)
 164                 *auth_fd = tbm_drm_client->auth_fd;
 165         else
 166                 close(tbm_drm_client->auth_fd);
 167
 168         if (capabilities)
 169                 *capabilities = tbm_drm_client->capabilities;
 170
 171         if (device) {
 172                 if (tbm_drm_client->device)
 173                         *device = strdup(tbm_drm_client->device);
 174                 else
 175                         *device = NULL;
 176         }
 177
 178         wl_tbm_drm_auth_set_user_data(tbm_drm_client->wl_tbm_drm_auth, NULL);
 179         wl_tbm_drm_auth_destroy(tbm_drm_client->wl_tbm_drm_auth);
 180
 181         if (tbm_drm_client->device)
 182                 free(tbm_drm_client->device);
 183
 184         free(tbm_drm_client);
 185
 186         wl_registry_destroy(wl_registry);
 187         wl_display_disconnect(display);
 188
 189         return 1;
 190 }
 191
 192
 193 void
 194 tbm_drm_helper_set_fd(int fd)
 195 {
 196         int fd_max = tbm_bufmgr_get_fd_limit();
 197
 198         if (tbm_drm_fd == fd)
 199                 return;
 200
 201         if (fd < 0 || fd > fd_max) {
 202                 TBM_ERR("%d out of fd range\n", fd);
 203                 return;
 204         }
 205
 206         if (tbm_drm_fd != -1)
 207                 TBM_WRN("already has TBM_DRM_FD: %d\n", tbm_drm_fd);
 208
 209         tbm_drm_fd = fd;
 210
 211         TBM_INFO("TBM_DRM_FD: %d\n", tbm_drm_fd);
 212 }
 213
 214 void
 215 tbm_drm_helper_unset_fd(void)
 216 {
 217         tbm_drm_fd = -1;
 218         TBM_INFO("TBM_DRM_FD: %d\n", tbm_drm_fd);
 219 }
 220
 221 int
 222 tbm_drm_helper_get_fd(void)
 223 {
 224         int new_fd, flags;
 225
 226         if (tbm_drm_fd == -1) {
 227                 TBM_ERR("no drm fd");
 228                 return -1;
 229         }
 230
 231         TBM_INFO("TBM_DRM_FD: %d\n", tbm_drm_fd);
 232
 233         flags = fcntl(tbm_drm_fd, F_GETFD);
 234         if (flags == -1) {
 235                 TBM_ERR("fcntl failed: %m");
 236                 return -1;
 237         }
 238
 239         new_fd = dup(tbm_drm_fd);
 240         if (new_fd < 0) {
 241                 TBM_ERR("dup failed: %m");
 242                 return -1;
 243         }
 244
 245         if (fcntl(new_fd, F_SETFD, flags|FD_CLOEXEC) == -1) {
 246                 TBM_ERR("failed to set fd\n");
 247                 close(new_fd);
 248                 return -1;
 249         }
 250
 251         TBM_INFO("Return TBM_FD: %d\n", new_fd);
 252
 253         return new_fd;
 254 }
 255
 256 /* LCOV_EXCL_STOP */