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tests/gem_flink: check flink lifetime rules

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flink names may not be destroyed while there's still a userspace
handle around. Test this by
- exporting an flink name from fd2
- open a gem bo from that name in fd
- close fd2, then open a new drm file (so that the original handle
  disappears)
- check whether the same flink name still works
This commit is contained in:
Daniel Vetter 2012-12-01 13:07:45 +01:00
parent d8df90dc6b
commit 6daae8bcb6
1 changed files with 37 additions and 0 deletions
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37
tests/gem_flink.c
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@ -115,6 +115,41 @@ test_bad_open(int fd)
assert(ret == -1 && errno == ENOENT);
}
static void
test_flink_lifetime(int fd)
{
struct drm_i915_gem_create create;
struct drm_gem_flink flink;
struct drm_gem_open gem_open;
int ret, fd2;
printf("Testing flink lifetime.\n");
fd2 = drm_open_any();
memset(&create, 0, sizeof(create));
create.size = 16 * 1024;
ret = ioctl(fd2, DRM_IOCTL_I915_GEM_CREATE, &create);
assert(ret == 0);
flink.handle = create.handle;
ret = ioctl(fd2, DRM_IOCTL_GEM_FLINK, &flink);
assert(ret == 0);
gem_open.name = flink.name;
ret = ioctl(fd, DRM_IOCTL_GEM_OPEN, &gem_open);
assert(ret == 0);
assert(gem_open.handle != 0);
close(fd2);
fd2 = drm_open_any();
gem_open.name = flink.name;
ret = ioctl(fd2, DRM_IOCTL_GEM_OPEN, &gem_open);
assert(ret == 0);
assert(gem_open.handle != 0);
}
int main(int argc, char **argv)
{
int fd;
@ -131,6 +166,8 @@ int main(int argc, char **argv)
test_bad_flink(fd);
if (drmtest_run_subtest("bad-open"))
test_bad_open(fd);
if (drmtest_run_subtest("flink-lifetime"))
test_bad_open(fd);
return 0;
}