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/*
* Copyright © 2012,2013 Intel Corporation
*
* 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.
*
* Authors:
* Daniel Vetter <daniel.vetter@ffwll.ch>
*
* Based upon code from libva/va/drm/va_drm_auth.c:
*/
/*
* Testcase: Check that the hollowed-out get_client ioctl still works for libva
*
* Oh dear, libva, why do you do such funny things?
*/
#define _GNU_SOURCE
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
# include <sys/syscall.h>
#include "drm.h"
#include "i915_drm.h"
#include "drmtest.h"
/* Checks whether the thread id is the current thread */
static bool
is_local_tid(pid_t tid)
{
/* On Linux systems, drmGetClient() would return the thread ID
instead of the actual process ID */
return syscall(SYS_gettid) == tid;
}
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;
}
int main(int argc, char **argv)
{
int fd;
bool auth;
fd = drm_open_any();
/* root (which we run igt as) should always be authenticated */
auth = check_auth(fd);
igt_assert(auth);
return 0;
}
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