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/*
Unix SMB/CIFS implementation.
SMB2 maxfid test
Copyright (C) Christof Schmitt 2016
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "libcli/smb2/smb2.h"
#include "libcli/smb2/smb2_calls.h"
#include "torture/torture.h"
#include "torture/smb2/proto.h"
bool torture_smb2_maxfid(struct torture_context *tctx)
{
bool ret = true;
NTSTATUS status;
struct smb2_tree *tree = NULL;
const char *dname = "smb2_maxfid";
size_t i, maxfid;
struct smb2_handle *handles, dir_handle = { };
size_t max_handles;
/*
* We limited this to 65520 as socket_wrapper has a limit of
* 65535 (0xfff0) open sockets.
*
* It could be increased by setting the following env variable:
*
* SOCKET_WRAPPER_MAX_SOCKETS=100000
*/
max_handles = torture_setting_int(tctx, "maxopenfiles", 65520);
if (!torture_smb2_connection(tctx, &tree)) {
return false;
}
handles = talloc_array(tctx, struct smb2_handle, max_handles);
if (handles == 0) {
torture_fail(tctx, "Could not allocate handles array.\n");
return false;
}
smb2_deltree(tree, dname);
status = torture_smb2_testdir(tree, dname, &dir_handle);
torture_assert_ntstatus_ok_goto(tctx, status, ret, done,
"torture_smb2_testdir failed");
smb2_util_close(tree, dir_handle);
torture_comment(tctx, "Creating subdirectories\n");
for (i = 0; i < max_handles; i += 1000) {
char *name;
struct smb2_create create = { };
struct smb2_close close = { };
name = talloc_asprintf(tctx, "%s\\%zu", dname, i / 1000);
torture_assert_goto(tctx, (name != NULL), ret, done,
"no memory for directory name\n");
create.in.desired_access = SEC_RIGHTS_DIR_ALL;
create.in.create_options = NTCREATEX_OPTIONS_DIRECTORY;
create.in.file_attributes = FILE_ATTRIBUTE_DIRECTORY;
create.in.share_access = NTCREATEX_SHARE_ACCESS_READ |
NTCREATEX_SHARE_ACCESS_WRITE |
NTCREATEX_SHARE_ACCESS_DELETE;
create.in.create_disposition = NTCREATEX_DISP_CREATE;
create.in.fname = name;
status = smb2_create(tree, tctx, &create);
talloc_free(name);
torture_assert_ntstatus_ok_goto(tctx, status, ret, done,
"CREATE directory failed\n");
close.in.file.handle = create.out.file.handle;
status = smb2_close(tree, &close);
torture_assert_ntstatus_ok_goto(tctx, status, ret, done,
"CLOSE directory failed\n");
}
torture_comment(tctx, "Testing maximum number of open files\n");
for (i = 0; i < max_handles; i++) {
char *name;
struct smb2_create create = { };
name = talloc_asprintf(tctx, "%s\\%zu\\%zu", dname, i / 1000, i);
torture_assert_goto(tctx, (name != NULL), ret, done,
"no memory for file name\n");
create.in.desired_access = SEC_RIGHTS_DIR_ALL;
create.in.create_options = 0;
create.in.file_attributes = FILE_ATTRIBUTE_NORMAL;
create.in.share_access = NTCREATEX_SHARE_ACCESS_READ |
NTCREATEX_SHARE_ACCESS_WRITE |
NTCREATEX_SHARE_ACCESS_DELETE;
create.in.create_disposition = NTCREATEX_DISP_CREATE;
create.in.fname = name;
status = smb2_create(tree, tctx, &create);
if (!NT_STATUS_IS_OK(status)) {
torture_comment(tctx, "create of %s failed: %s\n",
name, nt_errstr(status));
talloc_free(name);
break;
}
talloc_free(name);
handles[i] = create.out.file.handle;
}
maxfid = i;
if (maxfid == max_handles) {
torture_comment(tctx, "Reached test limit of %zu open files. "
"Adjust to higher test with "
"--option=torture:maxopenfiles=NNN\n", maxfid);
}
torture_comment(tctx, "Cleanup open files\n");
for (i = 0; i < maxfid; i++) {
status = smb2_util_close(tree, handles[i]);
torture_assert_ntstatus_ok_goto(tctx, status, ret, done,
"CLOSE failed\n");
}
done:
smb2_deltree(tree, dname);
talloc_free(handles);
return ret;
}
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