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/*
* Copyright © 2017 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.
*/
#include "igt.h"
static void test_many_handles(int fd)
{
uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 obj[2];
uint32_t clones[1024];
uint32_t original;
original = gem_create(fd, 4096);
gem_write(fd, original, 0, &bbe, sizeof(bbe));
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(obj);
execbuf.buffer_count = 1;
memset(obj, 0, sizeof(obj));
obj[0].handle = original;
gem_execbuf(fd, &execbuf);
for (int i = 0; i < ARRAY_SIZE(clones); i++) {
clones[i] = gem_open(fd, gem_flink(fd, original));
obj[0].handle = clones[i];
gem_execbuf(fd, &execbuf);
}
/* We do not allow the sam object to be referenced multiple times
* within an execbuf; hence why this practice of cloning a handle
* is only found within test cases.
*/
execbuf.buffer_count = 2;
obj[0].handle = original;
for (int i = 0; i < ARRAY_SIZE(clones); i++) {
obj[1].handle = clones[i];
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
}
/* Any other clone pair should also be detected */
obj[1].handle = clones[0]; /* (last, first) */
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
execbuf.buffer_count = 1;
/* Now close the original having used every clone */
obj[0].handle = original;
gem_close(fd, original);
igt_assert_eq(__gem_execbuf(fd, &execbuf), -ENOENT);
/* All clones should still be operational */
for (int i = 0; i < ARRAY_SIZE(clones); i++) {
obj[0].handle = clones[i];
gem_execbuf(fd, &execbuf);
/* ... until closed */
gem_close(fd, clones[i]);
igt_assert_eq(__gem_execbuf(fd, &execbuf), -ENOENT);
}
}
igt_main
{
int fd = -1;
igt_fixture {
/* Create an flink requires DRM_AUTH */
fd = drm_open_driver_master(DRIVER_INTEL);
igt_require_gem(fd);
}
igt_subtest("basic")
gem_close(fd, gem_create(fd, 4096));
igt_subtest("many-handles-one-vma")
test_many_handles(fd);
}
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