mirror of
https://github.com/samba-team/samba.git
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c9218c40e6
Signed-off-by: Michael Adam <obnox@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
421 lines
12 KiB
C
421 lines
12 KiB
C
/*
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Unix SMB/CIFS implementation.
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Core SMB2 server
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Copyright (C) Stefan Metzmacher 2009
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "smbd/smbd.h"
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#include "smbd/globals.h"
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#include "../libcli/smb/smb_common.h"
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#include "../lib/util/tevent_ntstatus.h"
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#include "lib/tevent_wait.h"
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static struct tevent_req *smbd_smb2_close_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct smbd_smb2_request *smb2req,
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struct files_struct *in_fsp,
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uint16_t in_flags);
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static NTSTATUS smbd_smb2_close_recv(struct tevent_req *req,
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uint16_t *out_flags,
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struct timespec *out_creation_ts,
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struct timespec *out_last_access_ts,
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struct timespec *out_last_write_ts,
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struct timespec *out_change_ts,
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uint64_t *out_allocation_size,
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uint64_t *out_end_of_file,
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uint32_t *out_file_attributes);
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static void smbd_smb2_request_close_done(struct tevent_req *subreq);
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NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req)
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{
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const uint8_t *inbody;
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uint16_t in_flags;
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uint64_t in_file_id_persistent;
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uint64_t in_file_id_volatile;
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struct files_struct *in_fsp;
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NTSTATUS status;
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struct tevent_req *subreq;
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status = smbd_smb2_request_verify_sizes(req, 0x18);
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if (!NT_STATUS_IS_OK(status)) {
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return smbd_smb2_request_error(req, status);
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}
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inbody = SMBD_SMB2_IN_BODY_PTR(req);
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in_flags = SVAL(inbody, 0x02);
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in_file_id_persistent = BVAL(inbody, 0x08);
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in_file_id_volatile = BVAL(inbody, 0x10);
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in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
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if (in_fsp == NULL) {
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return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
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}
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subreq = smbd_smb2_close_send(req, req->sconn->ev_ctx,
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req, in_fsp, in_flags);
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if (subreq == NULL) {
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return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
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}
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tevent_req_set_callback(subreq, smbd_smb2_request_close_done, req);
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return smbd_smb2_request_pending_queue(req, subreq, 500);
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}
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static void smbd_smb2_request_close_done(struct tevent_req *subreq)
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{
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struct smbd_smb2_request *req =
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tevent_req_callback_data(subreq,
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struct smbd_smb2_request);
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DATA_BLOB outbody;
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uint16_t out_flags = 0;
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connection_struct *conn = req->tcon->compat;
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struct timespec out_creation_ts = { 0, };
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struct timespec out_last_access_ts = { 0, };
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struct timespec out_last_write_ts = { 0, };
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struct timespec out_change_ts = { 0, };
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uint64_t out_allocation_size = 0;
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uint64_t out_end_of_file = 0;
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uint32_t out_file_attributes = 0;
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NTSTATUS status;
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NTSTATUS error;
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status = smbd_smb2_close_recv(subreq,
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&out_flags,
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&out_creation_ts,
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&out_last_access_ts,
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&out_last_write_ts,
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&out_change_ts,
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&out_allocation_size,
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&out_end_of_file,
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&out_file_attributes);
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TALLOC_FREE(subreq);
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if (!NT_STATUS_IS_OK(status)) {
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error = smbd_smb2_request_error(req, status);
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if (!NT_STATUS_IS_OK(error)) {
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smbd_server_connection_terminate(req->xconn,
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nt_errstr(error));
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return;
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}
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return;
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}
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outbody = smbd_smb2_generate_outbody(req, 0x3C);
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if (outbody.data == NULL) {
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error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
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if (!NT_STATUS_IS_OK(error)) {
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smbd_server_connection_terminate(req->xconn,
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nt_errstr(error));
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return;
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}
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return;
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}
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SSVAL(outbody.data, 0x00, 0x3C); /* struct size */
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SSVAL(outbody.data, 0x02, out_flags);
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SIVAL(outbody.data, 0x04, 0); /* reserved */
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put_long_date_timespec(conn->ts_res,
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(char *)outbody.data + 0x08, out_creation_ts);
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put_long_date_timespec(conn->ts_res,
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(char *)outbody.data + 0x10, out_last_access_ts);
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put_long_date_timespec(conn->ts_res,
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(char *)outbody.data + 0x18, out_last_write_ts);
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put_long_date_timespec(conn->ts_res,
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(char *)outbody.data + 0x20, out_change_ts);
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SBVAL(outbody.data, 0x28, out_allocation_size);
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SBVAL(outbody.data, 0x30, out_end_of_file);
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SIVAL(outbody.data, 0x38, out_file_attributes);
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error = smbd_smb2_request_done(req, outbody, NULL);
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if (!NT_STATUS_IS_OK(error)) {
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smbd_server_connection_terminate(req->xconn,
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nt_errstr(error));
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return;
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}
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}
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static void setup_close_full_information(connection_struct *conn,
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struct smb_filename *smb_fname,
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bool posix_open,
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struct timespec *out_creation_ts,
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struct timespec *out_last_access_ts,
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struct timespec *out_last_write_ts,
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struct timespec *out_change_ts,
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uint16_t *out_flags,
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uint64_t *out_allocation_size,
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uint64_t *out_end_of_file,
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uint32_t *out_file_attributes)
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{
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int ret;
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if (posix_open) {
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ret = SMB_VFS_LSTAT(conn, smb_fname);
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} else {
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ret = SMB_VFS_STAT(conn, smb_fname);
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}
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if (ret != 0) {
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return;
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}
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*out_flags = SMB2_CLOSE_FLAGS_FULL_INFORMATION;
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*out_file_attributes = dos_mode(conn, smb_fname);
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*out_last_write_ts = smb_fname->st.st_ex_mtime;
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*out_last_access_ts = smb_fname->st.st_ex_atime;
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*out_creation_ts = get_create_timespec(conn, NULL, smb_fname);
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*out_change_ts = get_change_timespec(conn, NULL, smb_fname);
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if (lp_dos_filetime_resolution(SNUM(conn))) {
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dos_filetime_timespec(out_creation_ts);
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dos_filetime_timespec(out_last_write_ts);
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dos_filetime_timespec(out_last_access_ts);
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dos_filetime_timespec(out_change_ts);
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}
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if (!(*out_file_attributes & FILE_ATTRIBUTE_DIRECTORY)) {
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*out_end_of_file = get_file_size_stat(&smb_fname->st);
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}
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*out_allocation_size = SMB_VFS_GET_ALLOC_SIZE(conn, NULL, &smb_fname->st);
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}
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static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
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struct files_struct *fsp,
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uint16_t in_flags,
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uint16_t *out_flags,
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struct timespec *out_creation_ts,
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struct timespec *out_last_access_ts,
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struct timespec *out_last_write_ts,
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struct timespec *out_change_ts,
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uint64_t *out_allocation_size,
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uint64_t *out_end_of_file,
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uint32_t *out_file_attributes)
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{
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NTSTATUS status;
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struct smb_request *smbreq;
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connection_struct *conn = req->tcon->compat;
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struct smb_filename *smb_fname = NULL;
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uint64_t allocation_size = 0;
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uint64_t file_size = 0;
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uint32_t dos_attrs = 0;
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uint16_t flags = 0;
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bool posix_open = false;
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ZERO_STRUCTP(out_creation_ts);
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ZERO_STRUCTP(out_last_access_ts);
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ZERO_STRUCTP(out_last_write_ts);
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ZERO_STRUCTP(out_change_ts);
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*out_flags = 0;
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*out_allocation_size = 0;
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*out_end_of_file = 0;
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*out_file_attributes = 0;
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DEBUG(10,("smbd_smb2_close: %s - %s\n",
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fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
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smbreq = smbd_smb2_fake_smb_request(req);
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if (smbreq == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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posix_open = (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN);
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smb_fname = cp_smb_filename(talloc_tos(), fsp->fsp_name);
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if (smb_fname == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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if ((in_flags & SMB2_CLOSE_FLAGS_FULL_INFORMATION) &&
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(fsp->initial_delete_on_close || fsp->delete_on_close)) {
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/*
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* We might be deleting the file. Ensure we
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* return valid data from before the file got
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* removed.
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*/
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setup_close_full_information(conn,
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smb_fname,
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posix_open,
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out_creation_ts,
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out_last_access_ts,
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out_last_write_ts,
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out_change_ts,
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&flags,
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&allocation_size,
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&file_size,
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&dos_attrs);
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}
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status = close_file(smbreq, fsp, NORMAL_CLOSE);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(5,("smbd_smb2_close: close_file[%s]: %s\n",
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fsp_str_dbg(fsp), nt_errstr(status)));
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return status;
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}
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if (in_flags & SMB2_CLOSE_FLAGS_FULL_INFORMATION) {
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setup_close_full_information(conn,
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smb_fname,
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posix_open,
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out_creation_ts,
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out_last_access_ts,
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out_last_write_ts,
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out_change_ts,
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&flags,
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&allocation_size,
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&file_size,
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&dos_attrs);
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}
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*out_flags = flags;
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*out_allocation_size = allocation_size;
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*out_end_of_file = file_size;
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*out_file_attributes = dos_attrs;
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return NT_STATUS_OK;
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}
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struct smbd_smb2_close_state {
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struct smbd_smb2_request *smb2req;
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struct files_struct *in_fsp;
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uint16_t in_flags;
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uint16_t out_flags;
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struct timespec out_creation_ts;
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struct timespec out_last_access_ts;
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struct timespec out_last_write_ts;
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struct timespec out_change_ts;
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uint64_t out_allocation_size;
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uint64_t out_end_of_file;
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uint32_t out_file_attributes;
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};
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static void smbd_smb2_close_do(struct tevent_req *subreq);
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static struct tevent_req *smbd_smb2_close_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct smbd_smb2_request *smb2req,
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struct files_struct *in_fsp,
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uint16_t in_flags)
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{
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struct tevent_req *req;
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struct smbd_smb2_close_state *state;
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NTSTATUS status;
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req = tevent_req_create(mem_ctx, &state,
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struct smbd_smb2_close_state);
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if (req == NULL) {
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return NULL;
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}
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state->smb2req = smb2req;
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state->in_fsp = in_fsp;
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state->in_flags = in_flags;
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if (in_fsp->num_aio_requests != 0) {
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in_fsp->deferred_close = tevent_wait_send(in_fsp, ev);
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if (tevent_req_nomem(in_fsp->deferred_close, req)) {
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return tevent_req_post(req, ev);
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}
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tevent_req_set_callback(in_fsp->deferred_close,
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smbd_smb2_close_do, req);
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return req;
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}
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status = smbd_smb2_close(smb2req,
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state->in_fsp,
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state->in_flags,
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&state->out_flags,
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&state->out_creation_ts,
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&state->out_last_access_ts,
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&state->out_last_write_ts,
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&state->out_change_ts,
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&state->out_allocation_size,
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&state->out_end_of_file,
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&state->out_file_attributes);
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if (tevent_req_nterror(req, status)) {
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return tevent_req_post(req, ev);
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}
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tevent_req_done(req);
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return tevent_req_post(req, ev);
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}
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static void smbd_smb2_close_do(struct tevent_req *subreq)
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{
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struct tevent_req *req = tevent_req_callback_data(
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subreq, struct tevent_req);
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struct smbd_smb2_close_state *state = tevent_req_data(
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req, struct smbd_smb2_close_state);
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NTSTATUS status;
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int ret;
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ret = tevent_wait_recv(subreq);
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TALLOC_FREE(subreq);
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if (ret != 0) {
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DEBUG(10, ("tevent_wait_recv returned %s\n",
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strerror(ret)));
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/*
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* Continue anyway, this should never happen
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*/
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}
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status = smbd_smb2_close(state->smb2req,
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state->in_fsp,
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state->in_flags,
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&state->out_flags,
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&state->out_creation_ts,
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&state->out_last_access_ts,
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&state->out_last_write_ts,
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&state->out_change_ts,
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&state->out_allocation_size,
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&state->out_end_of_file,
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&state->out_file_attributes);
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if (tevent_req_nterror(req, status)) {
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return;
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}
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tevent_req_done(req);
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}
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static NTSTATUS smbd_smb2_close_recv(struct tevent_req *req,
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uint16_t *out_flags,
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struct timespec *out_creation_ts,
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struct timespec *out_last_access_ts,
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struct timespec *out_last_write_ts,
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struct timespec *out_change_ts,
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uint64_t *out_allocation_size,
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uint64_t *out_end_of_file,
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uint32_t *out_file_attributes)
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{
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struct smbd_smb2_close_state *state =
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tevent_req_data(req,
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struct smbd_smb2_close_state);
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NTSTATUS status;
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if (tevent_req_is_nterror(req, &status)) {
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tevent_req_received(req);
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return status;
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}
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*out_flags = state->out_flags;
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*out_creation_ts = state->out_creation_ts;
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*out_last_access_ts = state->out_last_access_ts;
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*out_last_write_ts = state->out_last_write_ts;
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*out_change_ts = state->out_change_ts;
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*out_allocation_size = state->out_allocation_size;
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*out_end_of_file = state->out_end_of_file;
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*out_file_attributes = state->out_file_attributes;
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tevent_req_received(req);
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return NT_STATUS_OK;
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}
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