/*
* Build an SMB2 error response. [MS-SMB2] 2.2.2
*/
void
smb2sr_put_error_data(smb_request_t *sr, uint32_t status, mbuf_chain_t *mbc)
{
DWORD len;
/*
* The common dispatch code writes this when it
* updates the SMB2 header before sending.
*/
sr->smb2_status = status;
/* Rewind to the end of the SMB header. */
sr->reply.chain_offset = sr->smb2_reply_hdr + SMB2_HDR_SIZE;
/*
* NB: Must provide at least one byte of error data,
* per [MS-SMB2] 2.2.2
*/
if (mbc != NULL && (len = MBC_LENGTH(mbc)) != 0) {
(void) smb_mbc_encodef(
&sr->reply,
"wwlC",
9, /* StructSize */ /* w */
0, /* reserved */ /* w */
len, /* l */
mbc); /* C */
} else {
(void) smb_mbc_encodef(
&sr->reply,
"wwl.",
9, /* StructSize */ /* w */
0, /* reserved */ /* w */
0); /* l. */
}
}
void
smb_reply_notify_change_request(smb_request_t *sr)
{
smb_node_t *node;
smb_srqueue_t *srq;
int total_bytes, n_setup, n_param, n_data;
int param_off, param_pad, data_off, data_pad;
struct smb_xa *xa;
smb_error_t err;
SMB_REQ_VALID(sr);
srq = sr->session->s_srqueue;
smb_srqueue_waitq_to_runq(srq);
xa = sr->r_xa;
node = sr->sr_ncr.nc_node;
if (--node->waiting_event == 0) {
node->flags &= ~(NODE_FLAGS_NOTIFY_CHANGE | NODE_FLAGS_CHANGED);
smb_fem_fcn_uninstall(node);
}
mutex_enter(&sr->sr_mutex);
switch (sr->sr_state) {
case SMB_REQ_STATE_EVENT_OCCURRED:
sr->sr_state = SMB_REQ_STATE_ACTIVE;
/* many things changed */
(void) smb_mbc_encodef(&xa->rep_data_mb, "l", 0L);
/* setup the NT transact reply */
n_setup = MBC_LENGTH(&xa->rep_setup_mb);
n_param = MBC_LENGTH(&xa->rep_param_mb);
n_data = MBC_LENGTH(&xa->rep_data_mb);
n_setup = (n_setup + 1) / 2; /* Convert to setup words */
param_pad = 1; /* must be one */
param_off = param_pad + 32 + 37 + (n_setup << 1) + 2;
/* Pad to 4 bytes */
data_pad = (4 - ((param_off + n_param) & 3)) % 4;
/* Param off from hdr */
data_off = param_off + n_param + data_pad;
total_bytes = param_pad + n_param + data_pad + n_data;
(void) smbsr_encode_result(sr, 18+n_setup, total_bytes,
"b3.llllllllbCw#.C#.C",
18 + n_setup, /* wct */
n_param, /* Total Parameter Bytes */
n_data, /* Total Data Bytes */
n_param, /* Total Parameter Bytes this buffer */
param_off, /* Param offset from header start */
0, /* Param displacement */
n_data, /* Total Data Bytes this buffer */
data_off, /* Data offset from header start */
0, /* Data displacement */
n_setup, /* suwcnt */
&xa->rep_setup_mb, /* setup[] */
total_bytes, /* Total data bytes */
param_pad,
&xa->rep_param_mb,
data_pad,
&xa->rep_data_mb);
break;
case SMB_REQ_STATE_CANCELED:
err.status = NT_STATUS_CANCELLED;
err.errcls = ERRDOS;
err.errcode = ERROR_OPERATION_ABORTED;
smbsr_set_error(sr, &err);
(void) smb_mbc_encodef(&sr->reply, "bwbw",
(short)0, 0L, (short)0, 0L);
sr->smb_wct = 0;
sr->smb_bcc = 0;
break;
default:
ASSERT(0);
}
mutex_exit(&sr->sr_mutex);
/* Setup the header */
(void) smb_mbc_poke(&sr->reply, 0, SMB_HEADER_ED_FMT,
sr->first_smb_com,
sr->smb_rcls,
sr->smb_reh,
sr->smb_err,
sr->smb_flg | SMB_FLAGS_REPLY,
sr->smb_flg2,
sr->smb_pid_high,
sr->smb_sig,
sr->smb_tid,
sr->smb_pid,
sr->smb_uid,
sr->smb_mid);
if (sr->session->signing.flags & SMB_SIGNING_ENABLED)
smb_sign_reply(sr, NULL);
/* send the reply */
DTRACE_PROBE1(ncr__reply, struct smb_request *, sr)
(void) smb_session_send(sr->session, 0, &sr->reply);
smbsr_cleanup(sr);
mutex_enter(&sr->sr_mutex);
sr->sr_state = SMB_REQ_STATE_COMPLETED;
mutex_exit(&sr->sr_mutex);
smb_srqueue_runq_exit(srq);
smb_request_free(sr);
}
