1277 lines
36 KiB
C
1277 lines
36 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* SMB1 (CIFS) version specific operations
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*
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* Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
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*/
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#include <linux/pagemap.h>
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#include <linux/vfs.h>
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#include <uapi/linux/magic.h>
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#include "cifsglob.h"
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#include "cifsproto.h"
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#include "cifs_debug.h"
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#include "cifspdu.h"
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#include "cifs_unicode.h"
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#include "fs_context.h"
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/*
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* An NT cancel request header looks just like the original request except:
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*
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* The Command is SMB_COM_NT_CANCEL
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* The WordCount is zeroed out
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* The ByteCount is zeroed out
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*
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* This function mangles an existing request buffer into a
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* SMB_COM_NT_CANCEL request and then sends it.
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*/
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static int
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send_nt_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst,
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struct mid_q_entry *mid)
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{
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int rc = 0;
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struct smb_hdr *in_buf = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
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/* -4 for RFC1001 length and +2 for BCC field */
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in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4 + 2);
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in_buf->Command = SMB_COM_NT_CANCEL;
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in_buf->WordCount = 0;
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put_bcc(0, in_buf);
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cifs_server_lock(server);
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rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
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if (rc) {
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cifs_server_unlock(server);
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return rc;
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}
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/*
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* The response to this call was already factored into the sequence
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* number when the call went out, so we must adjust it back downward
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* after signing here.
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*/
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--server->sequence_number;
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rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
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if (rc < 0)
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server->sequence_number--;
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cifs_server_unlock(server);
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cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
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get_mid(in_buf), rc);
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return rc;
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}
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static bool
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cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
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{
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return ob1->fid.netfid == ob2->fid.netfid;
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}
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static unsigned int
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cifs_read_data_offset(char *buf)
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{
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READ_RSP *rsp = (READ_RSP *)buf;
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return le16_to_cpu(rsp->DataOffset);
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}
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static unsigned int
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cifs_read_data_length(char *buf, bool in_remaining)
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{
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READ_RSP *rsp = (READ_RSP *)buf;
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/* It's a bug reading remaining data for SMB1 packets */
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WARN_ON(in_remaining);
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return (le16_to_cpu(rsp->DataLengthHigh) << 16) +
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le16_to_cpu(rsp->DataLength);
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}
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static struct mid_q_entry *
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cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
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{
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struct smb_hdr *buf = (struct smb_hdr *)buffer;
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struct mid_q_entry *mid;
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spin_lock(&server->mid_lock);
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list_for_each_entry(mid, &server->pending_mid_q, qhead) {
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if (compare_mid(mid->mid, buf) &&
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mid->mid_state == MID_REQUEST_SUBMITTED &&
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le16_to_cpu(mid->command) == buf->Command) {
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kref_get(&mid->refcount);
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spin_unlock(&server->mid_lock);
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return mid;
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}
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}
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spin_unlock(&server->mid_lock);
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return NULL;
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}
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static void
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cifs_add_credits(struct TCP_Server_Info *server,
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const struct cifs_credits *credits, const int optype)
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{
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spin_lock(&server->req_lock);
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server->credits += credits->value;
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server->in_flight--;
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spin_unlock(&server->req_lock);
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wake_up(&server->request_q);
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}
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static void
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cifs_set_credits(struct TCP_Server_Info *server, const int val)
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{
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spin_lock(&server->req_lock);
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server->credits = val;
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server->oplocks = val > 1 ? enable_oplocks : false;
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spin_unlock(&server->req_lock);
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}
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static int *
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cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
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{
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return &server->credits;
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}
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static unsigned int
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cifs_get_credits(struct mid_q_entry *mid)
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{
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return 1;
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}
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/*
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* Find a free multiplex id (SMB mid). Otherwise there could be
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* mid collisions which might cause problems, demultiplexing the
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* wrong response to this request. Multiplex ids could collide if
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* one of a series requests takes much longer than the others, or
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* if a very large number of long lived requests (byte range
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* locks or FindNotify requests) are pending. No more than
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* 64K-1 requests can be outstanding at one time. If no
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* mids are available, return zero. A future optimization
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* could make the combination of mids and uid the key we use
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* to demultiplex on (rather than mid alone).
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* In addition to the above check, the cifs demultiplex
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* code already used the command code as a secondary
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* check of the frame and if signing is negotiated the
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* response would be discarded if the mid were the same
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* but the signature was wrong. Since the mid is not put in the
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* pending queue until later (when it is about to be dispatched)
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* we do have to limit the number of outstanding requests
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* to somewhat less than 64K-1 although it is hard to imagine
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* so many threads being in the vfs at one time.
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*/
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static __u64
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cifs_get_next_mid(struct TCP_Server_Info *server)
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{
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__u64 mid = 0;
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__u16 last_mid, cur_mid;
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bool collision, reconnect = false;
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spin_lock(&server->mid_lock);
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/* mid is 16 bit only for CIFS/SMB */
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cur_mid = (__u16)((server->CurrentMid) & 0xffff);
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/* we do not want to loop forever */
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last_mid = cur_mid;
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cur_mid++;
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/* avoid 0xFFFF MID */
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if (cur_mid == 0xffff)
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cur_mid++;
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/*
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* This nested loop looks more expensive than it is.
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* In practice the list of pending requests is short,
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* fewer than 50, and the mids are likely to be unique
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* on the first pass through the loop unless some request
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* takes longer than the 64 thousand requests before it
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* (and it would also have to have been a request that
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* did not time out).
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*/
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while (cur_mid != last_mid) {
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struct mid_q_entry *mid_entry;
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unsigned int num_mids;
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collision = false;
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if (cur_mid == 0)
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cur_mid++;
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num_mids = 0;
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list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
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++num_mids;
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if (mid_entry->mid == cur_mid &&
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mid_entry->mid_state == MID_REQUEST_SUBMITTED) {
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/* This mid is in use, try a different one */
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collision = true;
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break;
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}
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}
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/*
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* if we have more than 32k mids in the list, then something
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* is very wrong. Possibly a local user is trying to DoS the
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* box by issuing long-running calls and SIGKILL'ing them. If
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* we get to 2^16 mids then we're in big trouble as this
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* function could loop forever.
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*
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* Go ahead and assign out the mid in this situation, but force
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* an eventual reconnect to clean out the pending_mid_q.
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*/
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if (num_mids > 32768)
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reconnect = true;
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if (!collision) {
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mid = (__u64)cur_mid;
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server->CurrentMid = mid;
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break;
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}
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cur_mid++;
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}
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spin_unlock(&server->mid_lock);
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if (reconnect) {
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cifs_signal_cifsd_for_reconnect(server, false);
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}
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return mid;
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}
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/*
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return codes:
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0 not a transact2, or all data present
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>0 transact2 with that much data missing
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-EINVAL invalid transact2
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*/
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static int
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check2ndT2(char *buf)
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{
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struct smb_hdr *pSMB = (struct smb_hdr *)buf;
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struct smb_t2_rsp *pSMBt;
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int remaining;
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__u16 total_data_size, data_in_this_rsp;
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if (pSMB->Command != SMB_COM_TRANSACTION2)
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return 0;
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/* check for plausible wct, bcc and t2 data and parm sizes */
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/* check for parm and data offset going beyond end of smb */
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if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
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cifs_dbg(FYI, "Invalid transact2 word count\n");
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return -EINVAL;
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}
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pSMBt = (struct smb_t2_rsp *)pSMB;
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total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
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data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
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if (total_data_size == data_in_this_rsp)
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return 0;
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else if (total_data_size < data_in_this_rsp) {
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cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
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total_data_size, data_in_this_rsp);
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return -EINVAL;
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}
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remaining = total_data_size - data_in_this_rsp;
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cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
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remaining);
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if (total_data_size > CIFSMaxBufSize) {
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cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
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total_data_size, CIFSMaxBufSize);
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return -EINVAL;
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}
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return remaining;
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}
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static int
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coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
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{
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struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
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struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)target_hdr;
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char *data_area_of_tgt;
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char *data_area_of_src;
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int remaining;
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unsigned int byte_count, total_in_tgt;
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__u16 tgt_total_cnt, src_total_cnt, total_in_src;
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src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
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tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
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if (tgt_total_cnt != src_total_cnt)
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cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
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src_total_cnt, tgt_total_cnt);
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total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
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remaining = tgt_total_cnt - total_in_tgt;
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if (remaining < 0) {
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cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n",
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tgt_total_cnt, total_in_tgt);
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return -EPROTO;
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}
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if (remaining == 0) {
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/* nothing to do, ignore */
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cifs_dbg(FYI, "no more data remains\n");
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return 0;
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}
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total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
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if (remaining < total_in_src)
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cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
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/* find end of first SMB data area */
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data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
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get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
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/* validate target area */
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data_area_of_src = (char *)&pSMBs->hdr.Protocol +
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get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
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data_area_of_tgt += total_in_tgt;
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total_in_tgt += total_in_src;
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/* is the result too big for the field? */
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if (total_in_tgt > USHRT_MAX) {
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cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
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total_in_tgt);
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return -EPROTO;
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}
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put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
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/* fix up the BCC */
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byte_count = get_bcc(target_hdr);
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byte_count += total_in_src;
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/* is the result too big for the field? */
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if (byte_count > USHRT_MAX) {
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cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
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return -EPROTO;
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}
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put_bcc(byte_count, target_hdr);
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byte_count = be32_to_cpu(target_hdr->smb_buf_length);
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byte_count += total_in_src;
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/* don't allow buffer to overflow */
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if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
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cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
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byte_count);
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return -ENOBUFS;
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}
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target_hdr->smb_buf_length = cpu_to_be32(byte_count);
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/* copy second buffer into end of first buffer */
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memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
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if (remaining != total_in_src) {
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/* more responses to go */
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cifs_dbg(FYI, "waiting for more secondary responses\n");
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return 1;
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}
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/* we are done */
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cifs_dbg(FYI, "found the last secondary response\n");
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return 0;
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}
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static void
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cifs_downgrade_oplock(struct TCP_Server_Info *server,
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struct cifsInodeInfo *cinode, __u32 oplock,
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unsigned int epoch, bool *purge_cache)
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{
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cifs_set_oplock_level(cinode, oplock);
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}
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static bool
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cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
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char *buf, int malformed)
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{
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if (malformed)
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return false;
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if (check2ndT2(buf) <= 0)
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return false;
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mid->multiRsp = true;
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if (mid->resp_buf) {
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/* merge response - fix up 1st*/
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malformed = coalesce_t2(buf, mid->resp_buf);
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if (malformed > 0)
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return true;
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/* All parts received or packet is malformed. */
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mid->multiEnd = true;
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dequeue_mid(mid, malformed);
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return true;
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}
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if (!server->large_buf) {
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/*FIXME: switch to already allocated largebuf?*/
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cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
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} else {
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/* Have first buffer */
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mid->resp_buf = buf;
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mid->large_buf = true;
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server->bigbuf = NULL;
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}
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return true;
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}
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static bool
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cifs_need_neg(struct TCP_Server_Info *server)
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{
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return server->maxBuf == 0;
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}
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static int
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cifs_negotiate(const unsigned int xid,
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struct cifs_ses *ses,
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struct TCP_Server_Info *server)
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{
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int rc;
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rc = CIFSSMBNegotiate(xid, ses, server);
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if (rc == -EAGAIN) {
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/* retry only once on 1st time connection */
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set_credits(server, 1);
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rc = CIFSSMBNegotiate(xid, ses, server);
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if (rc == -EAGAIN)
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rc = -EHOSTDOWN;
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}
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return rc;
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}
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static unsigned int
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cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
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{
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__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
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struct TCP_Server_Info *server = tcon->ses->server;
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unsigned int wsize;
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/* start with specified wsize, or default */
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if (ctx->wsize)
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wsize = ctx->wsize;
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else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
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wsize = CIFS_DEFAULT_IOSIZE;
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else
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wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
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/* can server support 24-bit write sizes? (via UNIX extensions) */
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if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
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wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
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/*
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* no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
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* Limit it to max buffer offered by the server, minus the size of the
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* WRITEX header, not including the 4 byte RFC1001 length.
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*/
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if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
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(!(server->capabilities & CAP_UNIX) && server->sign))
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wsize = min_t(unsigned int, wsize,
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server->maxBuf - sizeof(WRITE_REQ) + 4);
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/* hard limit of CIFS_MAX_WSIZE */
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wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
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return wsize;
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}
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static unsigned int
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cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
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{
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__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
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struct TCP_Server_Info *server = tcon->ses->server;
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unsigned int rsize, defsize;
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/*
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* Set default value...
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*
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* HACK alert! Ancient servers have very small buffers. Even though
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* MS-CIFS indicates that servers are only limited by the client's
|
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* bufsize for reads, testing against win98se shows that it throws
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* INVALID_PARAMETER errors if you try to request too large a read.
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* OS/2 just sends back short reads.
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*
|
|
* If the server doesn't advertise CAP_LARGE_READ_X, then assume that
|
|
* it can't handle a read request larger than its MaxBufferSize either.
|
|
*/
|
|
if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
|
|
defsize = CIFS_DEFAULT_IOSIZE;
|
|
else if (server->capabilities & CAP_LARGE_READ_X)
|
|
defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
|
|
else
|
|
defsize = server->maxBuf - sizeof(READ_RSP);
|
|
|
|
rsize = ctx->rsize ? ctx->rsize : defsize;
|
|
|
|
/*
|
|
* no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
|
|
* the client's MaxBufferSize.
|
|
*/
|
|
if (!(server->capabilities & CAP_LARGE_READ_X))
|
|
rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
|
|
|
|
/* hard limit of CIFS_MAX_RSIZE */
|
|
rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
|
|
|
|
return rsize;
|
|
}
|
|
|
|
static void
|
|
cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
CIFSSMBQFSDeviceInfo(xid, tcon);
|
|
CIFSSMBQFSAttributeInfo(xid, tcon);
|
|
}
|
|
|
|
static int
|
|
cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path)
|
|
{
|
|
int rc;
|
|
FILE_ALL_INFO *file_info;
|
|
|
|
file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
|
|
if (file_info == NULL)
|
|
return -ENOMEM;
|
|
|
|
rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
|
|
0 /* not legacy */, cifs_sb->local_nls,
|
|
cifs_remap(cifs_sb));
|
|
|
|
if (rc == -EOPNOTSUPP || rc == -EINVAL)
|
|
rc = SMBQueryInformation(xid, tcon, full_path, file_info,
|
|
cifs_sb->local_nls, cifs_remap(cifs_sb));
|
|
kfree(file_info);
|
|
return rc;
|
|
}
|
|
|
|
static int cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path,
|
|
struct cifs_open_info_data *data, bool *adjustTZ, bool *symlink)
|
|
{
|
|
int rc;
|
|
FILE_ALL_INFO fi = {};
|
|
|
|
*symlink = false;
|
|
|
|
/* could do find first instead but this returns more info */
|
|
rc = CIFSSMBQPathInfo(xid, tcon, full_path, &fi, 0 /* not legacy */, cifs_sb->local_nls,
|
|
cifs_remap(cifs_sb));
|
|
/*
|
|
* BB optimize code so we do not make the above call when server claims
|
|
* no NT SMB support and the above call failed at least once - set flag
|
|
* in tcon or mount.
|
|
*/
|
|
if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
|
|
rc = SMBQueryInformation(xid, tcon, full_path, &fi, cifs_sb->local_nls,
|
|
cifs_remap(cifs_sb));
|
|
*adjustTZ = true;
|
|
}
|
|
|
|
if (!rc) {
|
|
int tmprc;
|
|
int oplock = 0;
|
|
struct cifs_fid fid;
|
|
struct cifs_open_parms oparms;
|
|
|
|
move_cifs_info_to_smb2(&data->fi, &fi);
|
|
|
|
if (!(le32_to_cpu(fi.Attributes) & ATTR_REPARSE))
|
|
return 0;
|
|
|
|
oparms = (struct cifs_open_parms) {
|
|
.tcon = tcon,
|
|
.cifs_sb = cifs_sb,
|
|
.desired_access = FILE_READ_ATTRIBUTES,
|
|
.create_options = cifs_create_options(cifs_sb, 0),
|
|
.disposition = FILE_OPEN,
|
|
.path = full_path,
|
|
.fid = &fid,
|
|
};
|
|
|
|
/* Need to check if this is a symbolic link or not */
|
|
tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
|
|
if (tmprc == -EOPNOTSUPP)
|
|
*symlink = true;
|
|
else if (tmprc == 0)
|
|
CIFSSMBClose(xid, tcon, fid.netfid);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path,
|
|
u64 *uniqueid, struct cifs_open_info_data *unused)
|
|
{
|
|
/*
|
|
* We can not use the IndexNumber field by default from Windows or
|
|
* Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
|
|
* CIFS spec claims that this value is unique within the scope of a
|
|
* share, and the windows docs hint that it's actually unique
|
|
* per-machine.
|
|
*
|
|
* There may be higher info levels that work but are there Windows
|
|
* server or network appliances for which IndexNumber field is not
|
|
* guaranteed unique?
|
|
*/
|
|
return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
|
|
cifs_sb->local_nls,
|
|
cifs_remap(cifs_sb));
|
|
}
|
|
|
|
static int cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile, struct cifs_open_info_data *data)
|
|
{
|
|
int rc;
|
|
FILE_ALL_INFO fi = {};
|
|
|
|
if (cfile->symlink_target) {
|
|
data->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL);
|
|
if (!data->symlink_target)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
rc = CIFSSMBQFileInfo(xid, tcon, cfile->fid.netfid, &fi);
|
|
if (!rc)
|
|
move_cifs_info_to_smb2(&data->fi, &fi);
|
|
return rc;
|
|
}
|
|
|
|
static void
|
|
cifs_clear_stats(struct cifs_tcon *tcon)
|
|
{
|
|
atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
|
|
atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
|
|
}
|
|
|
|
static void
|
|
cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
|
|
{
|
|
seq_printf(m, " Oplocks breaks: %d",
|
|
atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
|
|
seq_printf(m, "\nReads: %d Bytes: %llu",
|
|
atomic_read(&tcon->stats.cifs_stats.num_reads),
|
|
(long long)(tcon->bytes_read));
|
|
seq_printf(m, "\nWrites: %d Bytes: %llu",
|
|
atomic_read(&tcon->stats.cifs_stats.num_writes),
|
|
(long long)(tcon->bytes_written));
|
|
seq_printf(m, "\nFlushes: %d",
|
|
atomic_read(&tcon->stats.cifs_stats.num_flushes));
|
|
seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
|
|
atomic_read(&tcon->stats.cifs_stats.num_locks),
|
|
atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
|
|
atomic_read(&tcon->stats.cifs_stats.num_symlinks));
|
|
seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
|
|
atomic_read(&tcon->stats.cifs_stats.num_opens),
|
|
atomic_read(&tcon->stats.cifs_stats.num_closes),
|
|
atomic_read(&tcon->stats.cifs_stats.num_deletes));
|
|
seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
|
|
atomic_read(&tcon->stats.cifs_stats.num_posixopens),
|
|
atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
|
|
seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
|
|
atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
|
|
atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
|
|
seq_printf(m, "\nRenames: %d T2 Renames %d",
|
|
atomic_read(&tcon->stats.cifs_stats.num_renames),
|
|
atomic_read(&tcon->stats.cifs_stats.num_t2renames));
|
|
seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
|
|
atomic_read(&tcon->stats.cifs_stats.num_ffirst),
|
|
atomic_read(&tcon->stats.cifs_stats.num_fnext),
|
|
atomic_read(&tcon->stats.cifs_stats.num_fclose));
|
|
}
|
|
|
|
static void
|
|
cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
|
|
struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
|
|
const unsigned int xid)
|
|
{
|
|
FILE_BASIC_INFO info;
|
|
struct cifsInodeInfo *cifsInode;
|
|
u32 dosattrs;
|
|
int rc;
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
cifsInode = CIFS_I(inode);
|
|
dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
|
|
info.Attributes = cpu_to_le32(dosattrs);
|
|
rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
|
|
cifs_sb);
|
|
if (rc == 0)
|
|
cifsInode->cifsAttrs = dosattrs;
|
|
}
|
|
|
|
static int cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock,
|
|
void *buf)
|
|
{
|
|
struct cifs_open_info_data *data = buf;
|
|
FILE_ALL_INFO fi = {};
|
|
int rc;
|
|
|
|
if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
|
|
rc = SMBLegacyOpen(xid, oparms->tcon, oparms->path,
|
|
oparms->disposition,
|
|
oparms->desired_access,
|
|
oparms->create_options,
|
|
&oparms->fid->netfid, oplock, &fi,
|
|
oparms->cifs_sb->local_nls,
|
|
cifs_remap(oparms->cifs_sb));
|
|
else
|
|
rc = CIFS_open(xid, oparms, oplock, &fi);
|
|
|
|
if (!rc && data)
|
|
move_cifs_info_to_smb2(&data->fi, &fi);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void
|
|
cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
|
|
{
|
|
struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
|
|
cfile->fid.netfid = fid->netfid;
|
|
cifs_set_oplock_level(cinode, oplock);
|
|
cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
|
|
}
|
|
|
|
static void
|
|
cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid)
|
|
{
|
|
CIFSSMBClose(xid, tcon, fid->netfid);
|
|
}
|
|
|
|
static int
|
|
cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid)
|
|
{
|
|
return CIFSSMBFlush(xid, tcon, fid->netfid);
|
|
}
|
|
|
|
static int
|
|
cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid,
|
|
struct cifs_io_parms *parms, unsigned int *bytes_read,
|
|
char **buf, int *buf_type)
|
|
{
|
|
parms->netfid = pfid->netfid;
|
|
return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
|
|
}
|
|
|
|
static int
|
|
cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid,
|
|
struct cifs_io_parms *parms, unsigned int *written,
|
|
struct kvec *iov, unsigned long nr_segs)
|
|
{
|
|
|
|
parms->netfid = pfid->netfid;
|
|
return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
|
|
}
|
|
|
|
static int
|
|
smb_set_file_info(struct inode *inode, const char *full_path,
|
|
FILE_BASIC_INFO *buf, const unsigned int xid)
|
|
{
|
|
int oplock = 0;
|
|
int rc;
|
|
__u32 netpid;
|
|
struct cifs_fid fid;
|
|
struct cifs_open_parms oparms;
|
|
struct cifsFileInfo *open_file;
|
|
struct cifsInodeInfo *cinode = CIFS_I(inode);
|
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
|
|
struct tcon_link *tlink = NULL;
|
|
struct cifs_tcon *tcon;
|
|
|
|
/* if the file is already open for write, just use that fileid */
|
|
open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY);
|
|
if (open_file) {
|
|
fid.netfid = open_file->fid.netfid;
|
|
netpid = open_file->pid;
|
|
tcon = tlink_tcon(open_file->tlink);
|
|
goto set_via_filehandle;
|
|
}
|
|
|
|
tlink = cifs_sb_tlink(cifs_sb);
|
|
if (IS_ERR(tlink)) {
|
|
rc = PTR_ERR(tlink);
|
|
tlink = NULL;
|
|
goto out;
|
|
}
|
|
tcon = tlink_tcon(tlink);
|
|
|
|
rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
|
|
cifs_sb);
|
|
if (rc == 0) {
|
|
cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
|
|
goto out;
|
|
} else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
|
|
goto out;
|
|
}
|
|
|
|
oparms = (struct cifs_open_parms) {
|
|
.tcon = tcon,
|
|
.cifs_sb = cifs_sb,
|
|
.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
|
|
.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),
|
|
.disposition = FILE_OPEN,
|
|
.path = full_path,
|
|
.fid = &fid,
|
|
};
|
|
|
|
cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
|
|
rc = CIFS_open(xid, &oparms, &oplock, NULL);
|
|
if (rc != 0) {
|
|
if (rc == -EIO)
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
netpid = current->tgid;
|
|
|
|
set_via_filehandle:
|
|
rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
|
|
if (!rc)
|
|
cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
|
|
|
|
if (open_file == NULL)
|
|
CIFSSMBClose(xid, tcon, fid.netfid);
|
|
else
|
|
cifsFileInfo_put(open_file);
|
|
out:
|
|
if (tlink != NULL)
|
|
cifs_put_tlink(tlink);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile)
|
|
{
|
|
return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
|
|
}
|
|
|
|
static int
|
|
cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *path, struct cifs_sb_info *cifs_sb,
|
|
struct cifs_fid *fid, __u16 search_flags,
|
|
struct cifs_search_info *srch_inf)
|
|
{
|
|
int rc;
|
|
|
|
rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
|
|
&fid->netfid, search_flags, srch_inf, true);
|
|
if (rc)
|
|
cifs_dbg(FYI, "find first failed=%d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid, __u16 search_flags,
|
|
struct cifs_search_info *srch_inf)
|
|
{
|
|
return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
|
|
}
|
|
|
|
static int
|
|
cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid)
|
|
{
|
|
return CIFSFindClose(xid, tcon, fid->netfid);
|
|
}
|
|
|
|
static int
|
|
cifs_oplock_response(struct cifs_tcon *tcon, __u64 persistent_fid,
|
|
__u64 volatile_fid, __u16 net_fid, struct cifsInodeInfo *cinode)
|
|
{
|
|
return CIFSSMBLock(0, tcon, net_fid, current->tgid, 0, 0, 0, 0,
|
|
LOCKING_ANDX_OPLOCK_RELEASE, false, CIFS_CACHE_READ(cinode) ? 1 : 0);
|
|
}
|
|
|
|
static int
|
|
cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
|
|
{
|
|
int rc = -EOPNOTSUPP;
|
|
|
|
buf->f_type = CIFS_SUPER_MAGIC;
|
|
|
|
/*
|
|
* We could add a second check for a QFS Unix capability bit
|
|
*/
|
|
if ((tcon->ses->capabilities & CAP_UNIX) &&
|
|
(CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
|
|
rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
|
|
|
|
/*
|
|
* Only need to call the old QFSInfo if failed on newer one,
|
|
* e.g. by OS/2.
|
|
**/
|
|
if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
|
|
rc = CIFSSMBQFSInfo(xid, tcon, buf);
|
|
|
|
/*
|
|
* Some old Windows servers also do not support level 103, retry with
|
|
* older level one if old server failed the previous call or we
|
|
* bypassed it because we detected that this was an older LANMAN sess
|
|
*/
|
|
if (rc)
|
|
rc = SMBOldQFSInfo(xid, tcon, buf);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
|
|
__u64 length, __u32 type, int lock, int unlock, bool wait)
|
|
{
|
|
return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
|
|
current->tgid, length, offset, unlock, lock,
|
|
(__u8)type, wait, 0);
|
|
}
|
|
|
|
static int
|
|
cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const unsigned char *searchName, char **symlinkinfo,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
#ifdef CONFIG_CIFS_DFS_UPCALL
|
|
int rc;
|
|
struct dfs_info3_param referral = {0};
|
|
|
|
rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral,
|
|
0);
|
|
|
|
if (!rc) {
|
|
*symlinkinfo = kstrdup(referral.node_name, GFP_KERNEL);
|
|
free_dfs_info_param(&referral);
|
|
if (!*symlinkinfo)
|
|
rc = -ENOMEM;
|
|
}
|
|
return rc;
|
|
#else /* No DFS support */
|
|
return -EREMOTE;
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path,
|
|
char **target_path, bool is_reparse_point)
|
|
{
|
|
int rc;
|
|
int oplock = 0;
|
|
struct cifs_fid fid;
|
|
struct cifs_open_parms oparms;
|
|
|
|
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
|
|
|
|
if (is_reparse_point) {
|
|
cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/* Check for unix extensions */
|
|
if (cap_unix(tcon->ses)) {
|
|
rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
|
|
cifs_sb->local_nls,
|
|
cifs_remap(cifs_sb));
|
|
if (rc == -EREMOTE)
|
|
rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
|
|
target_path,
|
|
cifs_sb->local_nls);
|
|
|
|
goto out;
|
|
}
|
|
|
|
oparms = (struct cifs_open_parms) {
|
|
.tcon = tcon,
|
|
.cifs_sb = cifs_sb,
|
|
.desired_access = FILE_READ_ATTRIBUTES,
|
|
.create_options = cifs_create_options(cifs_sb,
|
|
OPEN_REPARSE_POINT),
|
|
.disposition = FILE_OPEN,
|
|
.path = full_path,
|
|
.fid = &fid,
|
|
};
|
|
|
|
rc = CIFS_open(xid, &oparms, &oplock, NULL);
|
|
if (rc)
|
|
goto out;
|
|
|
|
rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
|
|
cifs_sb->local_nls);
|
|
if (rc)
|
|
goto out_close;
|
|
|
|
convert_delimiter(*target_path, '/');
|
|
out_close:
|
|
CIFSSMBClose(xid, tcon, fid.netfid);
|
|
out:
|
|
if (!rc)
|
|
cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
|
|
return rc;
|
|
}
|
|
|
|
static bool
|
|
cifs_is_read_op(__u32 oplock)
|
|
{
|
|
return oplock == OPLOCK_READ;
|
|
}
|
|
|
|
static unsigned int
|
|
cifs_wp_retry_size(struct inode *inode)
|
|
{
|
|
return CIFS_SB(inode->i_sb)->ctx->wsize;
|
|
}
|
|
|
|
static bool
|
|
cifs_dir_needs_close(struct cifsFileInfo *cfile)
|
|
{
|
|
return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
|
|
}
|
|
|
|
static bool
|
|
cifs_can_echo(struct TCP_Server_Info *server)
|
|
{
|
|
if (server->tcpStatus == CifsGood)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static int
|
|
cifs_make_node(unsigned int xid, struct inode *inode,
|
|
struct dentry *dentry, struct cifs_tcon *tcon,
|
|
const char *full_path, umode_t mode, dev_t dev)
|
|
{
|
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
|
|
struct inode *newinode = NULL;
|
|
int rc = -EPERM;
|
|
struct cifs_open_info_data buf = {};
|
|
struct cifs_io_parms io_parms;
|
|
__u32 oplock = 0;
|
|
struct cifs_fid fid;
|
|
struct cifs_open_parms oparms;
|
|
unsigned int bytes_written;
|
|
struct win_dev *pdev;
|
|
struct kvec iov[2];
|
|
|
|
if (tcon->unix_ext) {
|
|
/*
|
|
* SMB1 Unix Extensions: requires server support but
|
|
* works with all special files
|
|
*/
|
|
struct cifs_unix_set_info_args args = {
|
|
.mode = mode & ~current_umask(),
|
|
.ctime = NO_CHANGE_64,
|
|
.atime = NO_CHANGE_64,
|
|
.mtime = NO_CHANGE_64,
|
|
.device = dev,
|
|
};
|
|
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
|
|
args.uid = current_fsuid();
|
|
args.gid = current_fsgid();
|
|
} else {
|
|
args.uid = INVALID_UID; /* no change */
|
|
args.gid = INVALID_GID; /* no change */
|
|
}
|
|
rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
|
|
cifs_sb->local_nls,
|
|
cifs_remap(cifs_sb));
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = cifs_get_inode_info_unix(&newinode, full_path,
|
|
inode->i_sb, xid);
|
|
|
|
if (rc == 0)
|
|
d_instantiate(dentry, newinode);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* SMB1 SFU emulation: should work with all servers, but only
|
|
* support block and char device (no socket & fifo)
|
|
*/
|
|
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
|
|
return rc;
|
|
|
|
if (!S_ISCHR(mode) && !S_ISBLK(mode))
|
|
return rc;
|
|
|
|
cifs_dbg(FYI, "sfu compat create special file\n");
|
|
|
|
oparms = (struct cifs_open_parms) {
|
|
.tcon = tcon,
|
|
.cifs_sb = cifs_sb,
|
|
.desired_access = GENERIC_WRITE,
|
|
.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
|
|
CREATE_OPTION_SPECIAL),
|
|
.disposition = FILE_CREATE,
|
|
.path = full_path,
|
|
.fid = &fid,
|
|
};
|
|
|
|
if (tcon->ses->server->oplocks)
|
|
oplock = REQ_OPLOCK;
|
|
else
|
|
oplock = 0;
|
|
rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, &buf);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/*
|
|
* BB Do not bother to decode buf since no local inode yet to put
|
|
* timestamps in, but we can reuse it safely.
|
|
*/
|
|
|
|
pdev = (struct win_dev *)&buf.fi;
|
|
io_parms.pid = current->tgid;
|
|
io_parms.tcon = tcon;
|
|
io_parms.offset = 0;
|
|
io_parms.length = sizeof(struct win_dev);
|
|
iov[1].iov_base = &buf.fi;
|
|
iov[1].iov_len = sizeof(struct win_dev);
|
|
if (S_ISCHR(mode)) {
|
|
memcpy(pdev->type, "IntxCHR", 8);
|
|
pdev->major = cpu_to_le64(MAJOR(dev));
|
|
pdev->minor = cpu_to_le64(MINOR(dev));
|
|
rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
|
|
&bytes_written, iov, 1);
|
|
} else if (S_ISBLK(mode)) {
|
|
memcpy(pdev->type, "IntxBLK", 8);
|
|
pdev->major = cpu_to_le64(MAJOR(dev));
|
|
pdev->minor = cpu_to_le64(MINOR(dev));
|
|
rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
|
|
&bytes_written, iov, 1);
|
|
}
|
|
tcon->ses->server->ops->close(xid, tcon, &fid);
|
|
d_drop(dentry);
|
|
|
|
/* FIXME: add code here to set EAs */
|
|
|
|
cifs_free_open_info(&buf);
|
|
return rc;
|
|
}
|
|
|
|
|
|
|
|
struct smb_version_operations smb1_operations = {
|
|
.send_cancel = send_nt_cancel,
|
|
.compare_fids = cifs_compare_fids,
|
|
.setup_request = cifs_setup_request,
|
|
.setup_async_request = cifs_setup_async_request,
|
|
.check_receive = cifs_check_receive,
|
|
.add_credits = cifs_add_credits,
|
|
.set_credits = cifs_set_credits,
|
|
.get_credits_field = cifs_get_credits_field,
|
|
.get_credits = cifs_get_credits,
|
|
.wait_mtu_credits = cifs_wait_mtu_credits,
|
|
.get_next_mid = cifs_get_next_mid,
|
|
.read_data_offset = cifs_read_data_offset,
|
|
.read_data_length = cifs_read_data_length,
|
|
.map_error = map_smb_to_linux_error,
|
|
.find_mid = cifs_find_mid,
|
|
.check_message = checkSMB,
|
|
.dump_detail = cifs_dump_detail,
|
|
.clear_stats = cifs_clear_stats,
|
|
.print_stats = cifs_print_stats,
|
|
.is_oplock_break = is_valid_oplock_break,
|
|
.downgrade_oplock = cifs_downgrade_oplock,
|
|
.check_trans2 = cifs_check_trans2,
|
|
.need_neg = cifs_need_neg,
|
|
.negotiate = cifs_negotiate,
|
|
.negotiate_wsize = cifs_negotiate_wsize,
|
|
.negotiate_rsize = cifs_negotiate_rsize,
|
|
.sess_setup = CIFS_SessSetup,
|
|
.logoff = CIFSSMBLogoff,
|
|
.tree_connect = CIFSTCon,
|
|
.tree_disconnect = CIFSSMBTDis,
|
|
.get_dfs_refer = CIFSGetDFSRefer,
|
|
.qfs_tcon = cifs_qfs_tcon,
|
|
.is_path_accessible = cifs_is_path_accessible,
|
|
.can_echo = cifs_can_echo,
|
|
.query_path_info = cifs_query_path_info,
|
|
.query_file_info = cifs_query_file_info,
|
|
.get_srv_inum = cifs_get_srv_inum,
|
|
.set_path_size = CIFSSMBSetEOF,
|
|
.set_file_size = CIFSSMBSetFileSize,
|
|
.set_file_info = smb_set_file_info,
|
|
.set_compression = cifs_set_compression,
|
|
.echo = CIFSSMBEcho,
|
|
.mkdir = CIFSSMBMkDir,
|
|
.mkdir_setinfo = cifs_mkdir_setinfo,
|
|
.rmdir = CIFSSMBRmDir,
|
|
.unlink = CIFSSMBDelFile,
|
|
.rename_pending_delete = cifs_rename_pending_delete,
|
|
.rename = CIFSSMBRename,
|
|
.create_hardlink = CIFSCreateHardLink,
|
|
.query_symlink = cifs_query_symlink,
|
|
.open = cifs_open_file,
|
|
.set_fid = cifs_set_fid,
|
|
.close = cifs_close_file,
|
|
.flush = cifs_flush_file,
|
|
.async_readv = cifs_async_readv,
|
|
.async_writev = cifs_async_writev,
|
|
.sync_read = cifs_sync_read,
|
|
.sync_write = cifs_sync_write,
|
|
.query_dir_first = cifs_query_dir_first,
|
|
.query_dir_next = cifs_query_dir_next,
|
|
.close_dir = cifs_close_dir,
|
|
.calc_smb_size = smbCalcSize,
|
|
.oplock_response = cifs_oplock_response,
|
|
.queryfs = cifs_queryfs,
|
|
.mand_lock = cifs_mand_lock,
|
|
.mand_unlock_range = cifs_unlock_range,
|
|
.push_mand_locks = cifs_push_mandatory_locks,
|
|
.query_mf_symlink = cifs_query_mf_symlink,
|
|
.create_mf_symlink = cifs_create_mf_symlink,
|
|
.is_read_op = cifs_is_read_op,
|
|
.wp_retry_size = cifs_wp_retry_size,
|
|
.dir_needs_close = cifs_dir_needs_close,
|
|
.select_sectype = cifs_select_sectype,
|
|
#ifdef CONFIG_CIFS_XATTR
|
|
.query_all_EAs = CIFSSMBQAllEAs,
|
|
.set_EA = CIFSSMBSetEA,
|
|
#endif /* CIFS_XATTR */
|
|
.get_acl = get_cifs_acl,
|
|
.get_acl_by_fid = get_cifs_acl_by_fid,
|
|
.set_acl = set_cifs_acl,
|
|
.make_node = cifs_make_node,
|
|
};
|
|
|
|
struct smb_version_values smb1_values = {
|
|
.version_string = SMB1_VERSION_STRING,
|
|
.protocol_id = SMB10_PROT_ID,
|
|
.large_lock_type = LOCKING_ANDX_LARGE_FILES,
|
|
.exclusive_lock_type = 0,
|
|
.shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
|
|
.unlock_lock_type = 0,
|
|
.header_preamble_size = 4,
|
|
.header_size = sizeof(struct smb_hdr),
|
|
.max_header_size = MAX_CIFS_HDR_SIZE,
|
|
.read_rsp_size = sizeof(READ_RSP),
|
|
.lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
|
|
.cap_unix = CAP_UNIX,
|
|
.cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
|
|
.cap_large_files = CAP_LARGE_FILES,
|
|
.signing_enabled = SECMODE_SIGN_ENABLED,
|
|
.signing_required = SECMODE_SIGN_REQUIRED,
|
|
};
|