1 /* 2 * Copyright 2007 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 * Authors: 24 * Eric Anholt <eric (at) anholt.net> 25 * 26 */ 27 28 #include <limits.h> 29 #include "drmtest.h" 30 31 enum auth_event { 32 SERVER_READY, 33 CLIENT_MAGIC, 34 CLIENT_DONE, 35 }; 36 37 int commfd[2]; 38 39 static void wait_event(int pipe, enum auth_event expected_event) 40 { 41 int ret; 42 enum auth_event event; 43 unsigned char in; 44 45 ret = read(commfd[pipe], &in, 1); 46 if (ret == -1) 47 err(1, "read error"); 48 event = in; 49 50 if (event != expected_event) 51 errx(1, "unexpected event: %d\n", event); 52 } 53 54 static void 55 send_event(int pipe, enum auth_event send_event) 56 { 57 int ret; 58 unsigned char event; 59 60 event = send_event; 61 ret = write(commfd[pipe], &event, 1); 62 if (ret == -1) 63 err(1, "failed to send event %d", event); 64 } 65 66 static void client() 67 { 68 struct drm_auth auth; 69 int drmfd, ret; 70 71 /* XXX: Should make sure we open the same DRM as the master */ 72 wait_event(0, SERVER_READY); 73 74 drmfd = drm_open_any(); 75 76 /* Get a client magic number and pass it to the master for auth. */ 77 auth.magic = 0; /* Quiet valgrind */ 78 ret = ioctl(drmfd, DRM_IOCTL_GET_MAGIC, &auth); 79 if (ret == -1) 80 err(1, "Couldn't get client magic"); 81 send_event(0, CLIENT_MAGIC); 82 ret = write(commfd[0], &auth.magic, sizeof(auth.magic)); 83 if (ret == -1) 84 err(1, "Couldn't write auth data"); 85 86 /* Signal that the client is completely done. */ 87 send_event(0, CLIENT_DONE); 88 } 89 90 static void server() 91 { 92 int drmfd, ret; 93 struct drm_auth auth; 94 95 drmfd = drm_open_any_master(); 96 97 auth.magic = 0xd0d0d0d0; 98 ret = ioctl(drmfd, DRM_IOCTL_AUTH_MAGIC, &auth); 99 if (ret != -1 || errno != EINVAL) 100 errx(1, "Authenticating bad magic succeeded\n"); 101 102 send_event(1, SERVER_READY); 103 104 wait_event(1, CLIENT_MAGIC); 105 ret = read(commfd[1], &auth.magic, sizeof(auth.magic)); 106 if (ret == -1) 107 err(1, "Failure to read client magic"); 108 109 ret = ioctl(drmfd, DRM_IOCTL_AUTH_MAGIC, &auth); 110 if (ret == -1) 111 err(1, "Failure to authenticate client magic\n"); 112 113 wait_event(1, CLIENT_DONE); 114 } 115 116 /** 117 * Checks DRM authentication mechanisms. 118 */ 119 int main(int argc, char **argv) 120 { 121 int ret; 122 123 ret = pipe(commfd); 124 if (ret == -1) 125 err(1, "Couldn't create pipe"); 126 127 ret = fork(); 128 if (ret == -1) 129 err(1, "failure to fork client"); 130 if (ret == 0) 131 client(); 132 else 133 server(); 134 135 return 0; 136 } 137 138
