1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259
|
/*
* Copyright 2015 David Herrmann <dh.herrmann@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/*
* Testcase: drmGetMagic() and drmAuthMagic()
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <fcntl.h>
#include <inttypes.h>
#include <errno.h>
#include <poll.h>
#include <sched.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/resource.h>
#include "drm.h"
/**
* TEST: core auth
* Description: Call drmGetMagic() and drmAuthMagic() and see if it behaves.
* Category: Core
* Mega feature: General Core features
* Sub-category: DRM
* Functionality: permission management for clients
* Feature: core
* Test category: GEM_Legacy
*
* SUBTEST: basic-auth
* Description: Test magic numbers for master and slave.
*
* SUBTEST: getclient-master-drop
* Description: Use 2 clients, check second is authenticated even when first dropped.
*
* SUBTEST: getclient-simple
* Description: Check drm client is always authenticated.
*
* SUBTEST: many-magics
* Description: Test authentication and magic numbers uniqness for rlimit slaves.
*/
#ifndef __linux__
# include <pthread.h>
#endif
#include "igt.h"
#include "igt_types.h"
IGT_TEST_DESCRIPTION("Call drmGetMagic() and drmAuthMagic() and see if it behaves.");
static bool
is_local_tid(pid_t tid)
{
#ifndef __linux__
return pthread_self() == tid;
#else
/* On Linux systems, drmGetClient() would return the thread ID
instead of the actual process ID */
return gettid() == tid;
#endif
}
static bool check_auth(int fd)
{
pid_t client_pid;
int i, auth, pid, uid;
unsigned long magic, iocs;
bool is_authenticated = false;
client_pid = getpid();
for (i = 0; !is_authenticated; i++) {
if (drmGetClient(fd, i, &auth, &pid, &uid, &magic, &iocs) != 0)
break;
is_authenticated = auth && (pid == client_pid || is_local_tid(pid));
}
return is_authenticated;
}
static int magic_cmp(const void *p1, const void *p2)
{
return *(const drm_magic_t*)p1 < *(const drm_magic_t*)p2;
}
static void test_many_magics(int master)
{
drm_magic_t magic, *magics = NULL;
unsigned int i, j, ns, allocated = 0;
char path[512];
int *fds = NULL, slave;
struct rlimit fd_limit;
do_or_die(getrlimit(RLIMIT_NOFILE, &fd_limit));
fd_limit.rlim_cur = 1024;
do_or_die(setrlimit(RLIMIT_NOFILE, &fd_limit));
sprintf(path, "/proc/self/fd/%d", master);
for (i = 0; ; ++i) {
/* open slave and make sure it's NOT a master */
slave = open(path, O_RDWR | O_CLOEXEC);
if (slave < 0) {
igt_info("Reopening device failed after %d opens\n", i);
igt_assert(errno == EMFILE);
break;
}
igt_assert(drmSetMaster(slave) < 0);
/* resize magic-map */
if (i >= allocated) {
ns = allocated * 2;
igt_assert(ns >= allocated);
if (!ns)
ns = 128;
magics = realloc(magics, sizeof(*magics) * ns);
igt_assert(magics);
fds = realloc(fds, sizeof(*fds) * ns);
igt_assert(fds);
allocated = ns;
}
/* insert magic */
igt_assert(drmGetMagic(slave, &magic) == 0);
igt_assert(magic > 0);
magics[i] = magic;
fds[i] = slave;
}
/* make sure we could at least open a reasonable number of files */
igt_assert(i > 128);
/*
* We cannot open the DRM file anymore. Lets sort the magic-map and
* verify no magic was used multiple times.
*/
qsort(magics, i, sizeof(*magics), magic_cmp);
for (j = 1; j < i; ++j)
igt_assert(magics[j] != magics[j - 1]);
/* make sure we can authenticate all of them */
for (j = 0; j < i; ++j)
igt_assert(drmAuthMagic(master, magics[j]) == 0);
/* close files again */
for (j = 0; j < i; ++j)
close(fds[j]);
free(fds);
free(magics);
}
static void test_basic_auth(int master)
{
drm_magic_t magic, old_magic;
int slave;
/* open slave and make sure it's NOT a master */
slave = drm_open_driver(DRIVER_ANY);
igt_require(slave >= 0);
igt_require(drmSetMaster(slave) < 0);
/* retrieve magic for slave */
igt_assert(drmGetMagic(slave, &magic) == 0);
igt_assert(magic > 0);
/* verify the same magic is returned every time */
old_magic = magic;
igt_assert(drmGetMagic(slave, &magic) == 0);
igt_assert_eq(magic, old_magic);
/* verify magic can be authorized exactly once, on the master */
igt_assert(drmAuthMagic(slave, magic) < 0);
igt_assert(drmAuthMagic(master, magic) == 0);
igt_assert(drmAuthMagic(master, magic) < 0);
/* verify that the magic did not change */
old_magic = magic;
igt_assert(drmGetMagic(slave, &magic) == 0);
igt_assert_eq(magic, old_magic);
drm_close_driver(slave);
}
igt_main
{
/* root (which we run igt as) should always be authenticated */
igt_describe("Check drm client is always authenticated.");
igt_subtest("getclient-simple") {
int fd = drm_open_driver(DRIVER_ANY);
igt_assert(check_auth(fd) == true);
drm_close_driver(fd);
}
igt_describe("Use 2 clients, check second is authenticated even when first dropped.");
igt_subtest("getclient-master-drop") {
int fd = drm_open_driver(DRIVER_ANY);
int fd2 = drm_open_driver(DRIVER_ANY);
igt_assert(check_auth(fd2) == true);
drm_close_driver(fd);
igt_assert(check_auth(fd2) == true);
drm_close_driver(fd2);
}
/* above tests require that no drm fd is open */
igt_subtest_group {
igt_fd_t(master);
igt_fixture
master = drm_open_driver_master(DRIVER_ANY);
igt_describe("Test magic numbers for master and slave.");
igt_subtest("basic-auth")
test_basic_auth(master);
/* this must be last, we adjust the rlimit */
igt_describe("Test authentication and magic numbers uniqness for rlimit slaves.");
igt_subtest("many-magics")
test_many_magics(master);
}
}
|