2970 lines
84 KiB
C
2970 lines
84 KiB
C
/*
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* SMB2 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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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License v2 as published
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* by the Free Software Foundation.
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*
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* This library 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
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* the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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 <linux/falloc.h>
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#include <linux/scatterlist.h>
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#include <linux/uuid.h>
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#include <crypto/aead.h>
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#include "cifsglob.h"
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#include "smb2pdu.h"
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#include "smb2proto.h"
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#include "cifsproto.h"
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#include "cifs_debug.h"
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#include "cifs_unicode.h"
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#include "smb2status.h"
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#include "smb2glob.h"
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#include "cifs_ioctl.h"
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static int
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change_conf(struct TCP_Server_Info *server)
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{
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server->credits += server->echo_credits + server->oplock_credits;
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server->oplock_credits = server->echo_credits = 0;
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switch (server->credits) {
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case 0:
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return -1;
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case 1:
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server->echoes = false;
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server->oplocks = false;
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cifs_dbg(VFS, "disabling echoes and oplocks\n");
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break;
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case 2:
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server->echoes = true;
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server->oplocks = false;
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server->echo_credits = 1;
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cifs_dbg(FYI, "disabling oplocks\n");
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break;
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default:
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server->echoes = true;
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if (enable_oplocks) {
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server->oplocks = true;
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server->oplock_credits = 1;
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} else
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server->oplocks = false;
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server->echo_credits = 1;
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}
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server->credits -= server->echo_credits + server->oplock_credits;
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return 0;
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}
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static void
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smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
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const int optype)
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{
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int *val, rc = 0;
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spin_lock(&server->req_lock);
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val = server->ops->get_credits_field(server, optype);
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*val += add;
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if (*val > 65000) {
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*val = 65000; /* Don't get near 64K credits, avoid srv bugs */
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printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
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}
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server->in_flight--;
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if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
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rc = change_conf(server);
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/*
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* Sometimes server returns 0 credits on oplock break ack - we need to
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* rebalance credits in this case.
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*/
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else if (server->in_flight > 0 && server->oplock_credits == 0 &&
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server->oplocks) {
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if (server->credits > 1) {
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server->credits--;
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server->oplock_credits++;
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}
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}
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spin_unlock(&server->req_lock);
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wake_up(&server->request_q);
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if (rc)
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cifs_reconnect(server);
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}
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static void
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smb2_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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spin_unlock(&server->req_lock);
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}
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static int *
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smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
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{
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switch (optype) {
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case CIFS_ECHO_OP:
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return &server->echo_credits;
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case CIFS_OBREAK_OP:
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return &server->oplock_credits;
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default:
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return &server->credits;
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}
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}
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static unsigned int
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smb2_get_credits(struct mid_q_entry *mid)
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{
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struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf);
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return le16_to_cpu(shdr->CreditRequest);
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}
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static int
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smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
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unsigned int *num, unsigned int *credits)
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{
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int rc = 0;
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unsigned int scredits;
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spin_lock(&server->req_lock);
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while (1) {
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if (server->credits <= 0) {
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spin_unlock(&server->req_lock);
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cifs_num_waiters_inc(server);
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rc = wait_event_killable(server->request_q,
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has_credits(server, &server->credits));
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cifs_num_waiters_dec(server);
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if (rc)
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return rc;
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spin_lock(&server->req_lock);
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} else {
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if (server->tcpStatus == CifsExiting) {
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spin_unlock(&server->req_lock);
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return -ENOENT;
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}
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scredits = server->credits;
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/* can deadlock with reopen */
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if (scredits == 1) {
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*num = SMB2_MAX_BUFFER_SIZE;
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*credits = 0;
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break;
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}
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/* leave one credit for a possible reopen */
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scredits--;
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*num = min_t(unsigned int, size,
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scredits * SMB2_MAX_BUFFER_SIZE);
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*credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
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server->credits -= *credits;
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server->in_flight++;
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break;
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}
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}
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spin_unlock(&server->req_lock);
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return rc;
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}
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static __u64
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smb2_get_next_mid(struct TCP_Server_Info *server)
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{
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__u64 mid;
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/* for SMB2 we need the current value */
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spin_lock(&GlobalMid_Lock);
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mid = server->CurrentMid++;
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spin_unlock(&GlobalMid_Lock);
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return mid;
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}
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static struct mid_q_entry *
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smb2_find_mid(struct TCP_Server_Info *server, char *buf)
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{
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struct mid_q_entry *mid;
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struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
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__u64 wire_mid = le64_to_cpu(shdr->MessageId);
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if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
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cifs_dbg(VFS, "encrypted frame parsing not supported yet");
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return NULL;
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}
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spin_lock(&GlobalMid_Lock);
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list_for_each_entry(mid, &server->pending_mid_q, qhead) {
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if ((mid->mid == wire_mid) &&
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(mid->mid_state == MID_REQUEST_SUBMITTED) &&
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(mid->command == shdr->Command)) {
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spin_unlock(&GlobalMid_Lock);
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return mid;
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}
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}
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spin_unlock(&GlobalMid_Lock);
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return NULL;
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}
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static void
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smb2_dump_detail(void *buf)
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{
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#ifdef CONFIG_CIFS_DEBUG2
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struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
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cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
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shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
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shdr->ProcessId);
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cifs_dbg(VFS, "smb buf %p len %u\n", buf, smb2_calc_size(buf));
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#endif
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}
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static bool
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smb2_need_neg(struct TCP_Server_Info *server)
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{
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return server->max_read == 0;
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}
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static int
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smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
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{
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int rc;
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ses->server->CurrentMid = 0;
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rc = SMB2_negotiate(xid, ses);
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/* BB we probably don't need to retry with modern servers */
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if (rc == -EAGAIN)
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rc = -EHOSTDOWN;
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return rc;
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}
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static unsigned int
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smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
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{
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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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wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
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wsize = min_t(unsigned int, wsize, server->max_write);
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if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
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wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
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return wsize;
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}
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static unsigned int
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smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
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{
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struct TCP_Server_Info *server = tcon->ses->server;
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unsigned int rsize;
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/* start with specified rsize, or default */
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rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
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rsize = min_t(unsigned int, rsize, server->max_read);
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if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
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rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
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return rsize;
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}
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#ifdef CONFIG_CIFS_STATS2
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static int
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SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
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{
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int rc;
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unsigned int ret_data_len = 0;
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struct network_interface_info_ioctl_rsp *out_buf;
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rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
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FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
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false /* use_ipc */,
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NULL /* no data input */, 0 /* no data input */,
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(char **)&out_buf, &ret_data_len);
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if (rc != 0)
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cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
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else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
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cifs_dbg(VFS, "server returned bad net interface info buf\n");
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rc = -EINVAL;
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} else {
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/* Dump info on first interface */
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cifs_dbg(FYI, "Adapter Capability 0x%x\t",
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le32_to_cpu(out_buf->Capability));
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cifs_dbg(FYI, "Link Speed %lld\n",
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le64_to_cpu(out_buf->LinkSpeed));
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}
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kfree(out_buf);
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return rc;
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}
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#endif /* STATS2 */
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static void
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smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
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{
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int rc;
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__le16 srch_path = 0; /* Null - open root of share */
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u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
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struct cifs_open_parms oparms;
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struct cifs_fid fid;
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oparms.tcon = tcon;
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oparms.desired_access = FILE_READ_ATTRIBUTES;
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oparms.disposition = FILE_OPEN;
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oparms.create_options = 0;
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oparms.fid = &fid;
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oparms.reconnect = false;
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rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
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if (rc)
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return;
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#ifdef CONFIG_CIFS_STATS2
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SMB3_request_interfaces(xid, tcon);
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#endif /* STATS2 */
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SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
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FS_ATTRIBUTE_INFORMATION);
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SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
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FS_DEVICE_INFORMATION);
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SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
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FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
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SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
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return;
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}
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static void
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smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
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{
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int rc;
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__le16 srch_path = 0; /* Null - open root of share */
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u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
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struct cifs_open_parms oparms;
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struct cifs_fid fid;
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oparms.tcon = tcon;
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oparms.desired_access = FILE_READ_ATTRIBUTES;
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oparms.disposition = FILE_OPEN;
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oparms.create_options = 0;
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oparms.fid = &fid;
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oparms.reconnect = false;
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rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
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if (rc)
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return;
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SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
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FS_ATTRIBUTE_INFORMATION);
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SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
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FS_DEVICE_INFORMATION);
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SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
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return;
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}
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static int
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smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
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struct cifs_sb_info *cifs_sb, const char *full_path)
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{
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int rc;
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__le16 *utf16_path;
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__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
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struct cifs_open_parms oparms;
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struct cifs_fid fid;
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utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
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if (!utf16_path)
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return -ENOMEM;
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oparms.tcon = tcon;
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oparms.desired_access = FILE_READ_ATTRIBUTES;
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oparms.disposition = FILE_OPEN;
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oparms.create_options = 0;
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oparms.fid = &fid;
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oparms.reconnect = false;
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rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
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if (rc) {
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kfree(utf16_path);
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return rc;
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}
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rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
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kfree(utf16_path);
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return rc;
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}
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static int
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smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
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struct cifs_sb_info *cifs_sb, const char *full_path,
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u64 *uniqueid, FILE_ALL_INFO *data)
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{
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*uniqueid = le64_to_cpu(data->IndexNumber);
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return 0;
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}
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static int
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smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
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struct cifs_fid *fid, FILE_ALL_INFO *data)
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{
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int rc;
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struct smb2_file_all_info *smb2_data;
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smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
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GFP_KERNEL);
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if (smb2_data == NULL)
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return -ENOMEM;
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rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
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smb2_data);
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if (!rc)
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move_smb2_info_to_cifs(data, smb2_data);
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kfree(smb2_data);
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return rc;
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}
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static bool
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smb2_can_echo(struct TCP_Server_Info *server)
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{
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return server->echoes;
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}
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static void
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smb2_clear_stats(struct cifs_tcon *tcon)
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{
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#ifdef CONFIG_CIFS_STATS
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int i;
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for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
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atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
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atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
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}
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#endif
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}
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static void
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smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
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{
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seq_puts(m, "\n\tShare Capabilities:");
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if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
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seq_puts(m, " DFS,");
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if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
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seq_puts(m, " CONTINUOUS AVAILABILITY,");
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if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
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seq_puts(m, " SCALEOUT,");
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if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
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seq_puts(m, " CLUSTER,");
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if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
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seq_puts(m, " ASYMMETRIC,");
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if (tcon->capabilities == 0)
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seq_puts(m, " None");
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if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
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seq_puts(m, " Aligned,");
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if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
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seq_puts(m, " Partition Aligned,");
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if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
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seq_puts(m, " SSD,");
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if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
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seq_puts(m, " TRIM-support,");
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seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
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if (tcon->perf_sector_size)
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seq_printf(m, "\tOptimal sector size: 0x%x",
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tcon->perf_sector_size);
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}
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static void
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smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
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{
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#ifdef CONFIG_CIFS_STATS
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atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
|
|
atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
|
|
seq_printf(m, "\nNegotiates: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_NEGOTIATE_HE]),
|
|
atomic_read(&failed[SMB2_NEGOTIATE_HE]));
|
|
seq_printf(m, "\nSessionSetups: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
|
|
atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
|
|
seq_printf(m, "\nLogoffs: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_LOGOFF_HE]),
|
|
atomic_read(&failed[SMB2_LOGOFF_HE]));
|
|
seq_printf(m, "\nTreeConnects: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
|
|
atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
|
|
seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
|
|
atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
|
|
seq_printf(m, "\nCreates: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_CREATE_HE]),
|
|
atomic_read(&failed[SMB2_CREATE_HE]));
|
|
seq_printf(m, "\nCloses: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_CLOSE_HE]),
|
|
atomic_read(&failed[SMB2_CLOSE_HE]));
|
|
seq_printf(m, "\nFlushes: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_FLUSH_HE]),
|
|
atomic_read(&failed[SMB2_FLUSH_HE]));
|
|
seq_printf(m, "\nReads: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_READ_HE]),
|
|
atomic_read(&failed[SMB2_READ_HE]));
|
|
seq_printf(m, "\nWrites: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_WRITE_HE]),
|
|
atomic_read(&failed[SMB2_WRITE_HE]));
|
|
seq_printf(m, "\nLocks: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_LOCK_HE]),
|
|
atomic_read(&failed[SMB2_LOCK_HE]));
|
|
seq_printf(m, "\nIOCTLs: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_IOCTL_HE]),
|
|
atomic_read(&failed[SMB2_IOCTL_HE]));
|
|
seq_printf(m, "\nCancels: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_CANCEL_HE]),
|
|
atomic_read(&failed[SMB2_CANCEL_HE]));
|
|
seq_printf(m, "\nEchos: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_ECHO_HE]),
|
|
atomic_read(&failed[SMB2_ECHO_HE]));
|
|
seq_printf(m, "\nQueryDirectories: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
|
|
atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
|
|
seq_printf(m, "\nChangeNotifies: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
|
|
atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
|
|
seq_printf(m, "\nQueryInfos: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_QUERY_INFO_HE]),
|
|
atomic_read(&failed[SMB2_QUERY_INFO_HE]));
|
|
seq_printf(m, "\nSetInfos: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_SET_INFO_HE]),
|
|
atomic_read(&failed[SMB2_SET_INFO_HE]));
|
|
seq_printf(m, "\nOplockBreaks: %d sent %d failed",
|
|
atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
|
|
atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
|
|
{
|
|
struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
|
|
struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
|
|
|
|
cfile->fid.persistent_fid = fid->persistent_fid;
|
|
cfile->fid.volatile_fid = fid->volatile_fid;
|
|
server->ops->set_oplock_level(cinode, oplock, fid->epoch,
|
|
&fid->purge_cache);
|
|
cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
|
|
memcpy(cfile->fid.create_guid, fid->create_guid, 16);
|
|
}
|
|
|
|
static void
|
|
smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid)
|
|
{
|
|
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
|
|
}
|
|
|
|
static int
|
|
SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
|
|
u64 persistent_fid, u64 volatile_fid,
|
|
struct copychunk_ioctl *pcchunk)
|
|
{
|
|
int rc;
|
|
unsigned int ret_data_len;
|
|
struct resume_key_req *res_key;
|
|
|
|
rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
|
|
FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
|
|
false /* use_ipc */,
|
|
NULL, 0 /* no input */,
|
|
(char **)&res_key, &ret_data_len);
|
|
|
|
if (rc) {
|
|
cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
|
|
goto req_res_key_exit;
|
|
}
|
|
if (ret_data_len < sizeof(struct resume_key_req)) {
|
|
cifs_dbg(VFS, "Invalid refcopy resume key length\n");
|
|
rc = -EINVAL;
|
|
goto req_res_key_exit;
|
|
}
|
|
memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
|
|
|
|
req_res_key_exit:
|
|
kfree(res_key);
|
|
return rc;
|
|
}
|
|
|
|
static ssize_t
|
|
smb2_copychunk_range(const unsigned int xid,
|
|
struct cifsFileInfo *srcfile,
|
|
struct cifsFileInfo *trgtfile, u64 src_off,
|
|
u64 len, u64 dest_off)
|
|
{
|
|
int rc;
|
|
unsigned int ret_data_len;
|
|
struct copychunk_ioctl *pcchunk;
|
|
struct copychunk_ioctl_rsp *retbuf = NULL;
|
|
struct cifs_tcon *tcon;
|
|
int chunks_copied = 0;
|
|
bool chunk_sizes_updated = false;
|
|
ssize_t bytes_written, total_bytes_written = 0;
|
|
|
|
pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
|
|
|
|
if (pcchunk == NULL)
|
|
return -ENOMEM;
|
|
|
|
cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
|
|
/* Request a key from the server to identify the source of the copy */
|
|
rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
|
|
srcfile->fid.persistent_fid,
|
|
srcfile->fid.volatile_fid, pcchunk);
|
|
|
|
/* Note: request_res_key sets res_key null only if rc !=0 */
|
|
if (rc)
|
|
goto cchunk_out;
|
|
|
|
/* For now array only one chunk long, will make more flexible later */
|
|
pcchunk->ChunkCount = cpu_to_le32(1);
|
|
pcchunk->Reserved = 0;
|
|
pcchunk->Reserved2 = 0;
|
|
|
|
tcon = tlink_tcon(trgtfile->tlink);
|
|
|
|
while (len > 0) {
|
|
pcchunk->SourceOffset = cpu_to_le64(src_off);
|
|
pcchunk->TargetOffset = cpu_to_le64(dest_off);
|
|
pcchunk->Length =
|
|
cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
|
|
|
|
/* Request server copy to target from src identified by key */
|
|
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
|
|
trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
|
|
true /* is_fsctl */, false /* use_ipc */,
|
|
(char *)pcchunk,
|
|
sizeof(struct copychunk_ioctl), (char **)&retbuf,
|
|
&ret_data_len);
|
|
if (rc == 0) {
|
|
if (ret_data_len !=
|
|
sizeof(struct copychunk_ioctl_rsp)) {
|
|
cifs_dbg(VFS, "invalid cchunk response size\n");
|
|
rc = -EIO;
|
|
goto cchunk_out;
|
|
}
|
|
if (retbuf->TotalBytesWritten == 0) {
|
|
cifs_dbg(FYI, "no bytes copied\n");
|
|
rc = -EIO;
|
|
goto cchunk_out;
|
|
}
|
|
/*
|
|
* Check if server claimed to write more than we asked
|
|
*/
|
|
if (le32_to_cpu(retbuf->TotalBytesWritten) >
|
|
le32_to_cpu(pcchunk->Length)) {
|
|
cifs_dbg(VFS, "invalid copy chunk response\n");
|
|
rc = -EIO;
|
|
goto cchunk_out;
|
|
}
|
|
if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
|
|
cifs_dbg(VFS, "invalid num chunks written\n");
|
|
rc = -EIO;
|
|
goto cchunk_out;
|
|
}
|
|
chunks_copied++;
|
|
|
|
bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
|
|
src_off += bytes_written;
|
|
dest_off += bytes_written;
|
|
len -= bytes_written;
|
|
total_bytes_written += bytes_written;
|
|
|
|
cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
|
|
le32_to_cpu(retbuf->ChunksWritten),
|
|
le32_to_cpu(retbuf->ChunkBytesWritten),
|
|
bytes_written);
|
|
} else if (rc == -EINVAL) {
|
|
if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
|
|
goto cchunk_out;
|
|
|
|
cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
|
|
le32_to_cpu(retbuf->ChunksWritten),
|
|
le32_to_cpu(retbuf->ChunkBytesWritten),
|
|
le32_to_cpu(retbuf->TotalBytesWritten));
|
|
|
|
/*
|
|
* Check if this is the first request using these sizes,
|
|
* (ie check if copy succeed once with original sizes
|
|
* and check if the server gave us different sizes after
|
|
* we already updated max sizes on previous request).
|
|
* if not then why is the server returning an error now
|
|
*/
|
|
if ((chunks_copied != 0) || chunk_sizes_updated)
|
|
goto cchunk_out;
|
|
|
|
/* Check that server is not asking us to grow size */
|
|
if (le32_to_cpu(retbuf->ChunkBytesWritten) <
|
|
tcon->max_bytes_chunk)
|
|
tcon->max_bytes_chunk =
|
|
le32_to_cpu(retbuf->ChunkBytesWritten);
|
|
else
|
|
goto cchunk_out; /* server gave us bogus size */
|
|
|
|
/* No need to change MaxChunks since already set to 1 */
|
|
chunk_sizes_updated = true;
|
|
} else
|
|
goto cchunk_out;
|
|
}
|
|
|
|
cchunk_out:
|
|
kfree(pcchunk);
|
|
kfree(retbuf);
|
|
if (rc)
|
|
return rc;
|
|
else
|
|
return total_bytes_written;
|
|
}
|
|
|
|
static int
|
|
smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid)
|
|
{
|
|
return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
|
|
}
|
|
|
|
static unsigned int
|
|
smb2_read_data_offset(char *buf)
|
|
{
|
|
struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
|
|
return rsp->DataOffset;
|
|
}
|
|
|
|
static unsigned int
|
|
smb2_read_data_length(char *buf)
|
|
{
|
|
struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
|
|
return le32_to_cpu(rsp->DataLength);
|
|
}
|
|
|
|
|
|
static int
|
|
smb2_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->persistent_fid = pfid->persistent_fid;
|
|
parms->volatile_fid = pfid->volatile_fid;
|
|
return SMB2_read(xid, parms, bytes_read, buf, buf_type);
|
|
}
|
|
|
|
static int
|
|
smb2_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->persistent_fid = pfid->persistent_fid;
|
|
parms->volatile_fid = pfid->volatile_fid;
|
|
return SMB2_write(xid, parms, written, iov, nr_segs);
|
|
}
|
|
|
|
/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
|
|
static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
|
|
{
|
|
struct cifsInodeInfo *cifsi;
|
|
int rc;
|
|
|
|
cifsi = CIFS_I(inode);
|
|
|
|
/* if file already sparse don't bother setting sparse again */
|
|
if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
|
|
return true; /* already sparse */
|
|
|
|
if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
|
|
return true; /* already not sparse */
|
|
|
|
/*
|
|
* Can't check for sparse support on share the usual way via the
|
|
* FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
|
|
* since Samba server doesn't set the flag on the share, yet
|
|
* supports the set sparse FSCTL and returns sparse correctly
|
|
* in the file attributes. If we fail setting sparse though we
|
|
* mark that server does not support sparse files for this share
|
|
* to avoid repeatedly sending the unsupported fsctl to server
|
|
* if the file is repeatedly extended.
|
|
*/
|
|
if (tcon->broken_sparse_sup)
|
|
return false;
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
|
|
true /* is_fctl */, false /* use_ipc */,
|
|
&setsparse, 1, NULL, NULL);
|
|
if (rc) {
|
|
tcon->broken_sparse_sup = true;
|
|
cifs_dbg(FYI, "set sparse rc = %d\n", rc);
|
|
return false;
|
|
}
|
|
|
|
if (setsparse)
|
|
cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
|
|
else
|
|
cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
|
|
|
|
return true;
|
|
}
|
|
|
|
static int
|
|
smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
|
|
{
|
|
__le64 eof = cpu_to_le64(size);
|
|
struct inode *inode;
|
|
|
|
/*
|
|
* If extending file more than one page make sparse. Many Linux fs
|
|
* make files sparse by default when extending via ftruncate
|
|
*/
|
|
inode = d_inode(cfile->dentry);
|
|
|
|
if (!set_alloc && (size > inode->i_size + 8192)) {
|
|
__u8 set_sparse = 1;
|
|
|
|
/* whether set sparse succeeds or not, extend the file */
|
|
smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
|
|
}
|
|
|
|
return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, cfile->pid, &eof, false);
|
|
}
|
|
|
|
static int
|
|
smb2_duplicate_extents(const unsigned int xid,
|
|
struct cifsFileInfo *srcfile,
|
|
struct cifsFileInfo *trgtfile, u64 src_off,
|
|
u64 len, u64 dest_off)
|
|
{
|
|
int rc;
|
|
unsigned int ret_data_len;
|
|
struct duplicate_extents_to_file dup_ext_buf;
|
|
struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
|
|
|
|
/* server fileays advertise duplicate extent support with this flag */
|
|
if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
|
|
FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
|
|
return -EOPNOTSUPP;
|
|
|
|
dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
|
|
dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
|
|
dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
|
|
dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
|
|
dup_ext_buf.ByteCount = cpu_to_le64(len);
|
|
cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
|
|
src_off, dest_off, len);
|
|
|
|
rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
|
|
if (rc)
|
|
goto duplicate_extents_out;
|
|
|
|
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
|
|
trgtfile->fid.volatile_fid,
|
|
FSCTL_DUPLICATE_EXTENTS_TO_FILE,
|
|
true /* is_fsctl */, false /* use_ipc */,
|
|
(char *)&dup_ext_buf,
|
|
sizeof(struct duplicate_extents_to_file),
|
|
NULL,
|
|
&ret_data_len);
|
|
|
|
if (ret_data_len > 0)
|
|
cifs_dbg(FYI, "non-zero response length in duplicate extents");
|
|
|
|
duplicate_extents_out:
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile)
|
|
{
|
|
return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid);
|
|
}
|
|
|
|
static int
|
|
smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile)
|
|
{
|
|
struct fsctl_set_integrity_information_req integr_info;
|
|
unsigned int ret_data_len;
|
|
|
|
integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
|
|
integr_info.Flags = 0;
|
|
integr_info.Reserved = 0;
|
|
|
|
return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid,
|
|
FSCTL_SET_INTEGRITY_INFORMATION,
|
|
true /* is_fsctl */, false /* use_ipc */,
|
|
(char *)&integr_info,
|
|
sizeof(struct fsctl_set_integrity_information_req),
|
|
NULL,
|
|
&ret_data_len);
|
|
|
|
}
|
|
|
|
static int
|
|
smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile, void __user *ioc_buf)
|
|
{
|
|
char *retbuf = NULL;
|
|
unsigned int ret_data_len = 0;
|
|
int rc;
|
|
struct smb_snapshot_array snapshot_in;
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid,
|
|
FSCTL_SRV_ENUMERATE_SNAPSHOTS,
|
|
true /* is_fsctl */, false /* use_ipc */,
|
|
NULL, 0 /* no input data */,
|
|
(char **)&retbuf,
|
|
&ret_data_len);
|
|
cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
|
|
rc, ret_data_len);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
|
|
/* Fixup buffer */
|
|
if (copy_from_user(&snapshot_in, ioc_buf,
|
|
sizeof(struct smb_snapshot_array))) {
|
|
rc = -EFAULT;
|
|
kfree(retbuf);
|
|
return rc;
|
|
}
|
|
if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
|
|
rc = -ERANGE;
|
|
kfree(retbuf);
|
|
return rc;
|
|
}
|
|
|
|
if (ret_data_len > snapshot_in.snapshot_array_size)
|
|
ret_data_len = snapshot_in.snapshot_array_size;
|
|
|
|
if (copy_to_user(ioc_buf, retbuf, ret_data_len))
|
|
rc = -EFAULT;
|
|
}
|
|
|
|
kfree(retbuf);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb2_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)
|
|
{
|
|
__le16 *utf16_path;
|
|
int rc;
|
|
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
|
if (!utf16_path)
|
|
return -ENOMEM;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = 0;
|
|
oparms.fid = fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
|
|
kfree(utf16_path);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
srch_inf->entries_in_buffer = 0;
|
|
srch_inf->index_of_last_entry = 0;
|
|
|
|
rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
|
|
fid->volatile_fid, 0, srch_inf);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
|
|
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb2_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 SMB2_query_directory(xid, tcon, fid->persistent_fid,
|
|
fid->volatile_fid, 0, srch_inf);
|
|
}
|
|
|
|
static int
|
|
smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_fid *fid)
|
|
{
|
|
return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
|
|
}
|
|
|
|
/*
|
|
* If we negotiate SMB2 protocol and get STATUS_PENDING - update
|
|
* the number of credits and return true. Otherwise - return false.
|
|
*/
|
|
static bool
|
|
smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
|
|
{
|
|
struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
|
|
|
|
if (shdr->Status != STATUS_PENDING)
|
|
return false;
|
|
|
|
if (!length) {
|
|
spin_lock(&server->req_lock);
|
|
server->credits += le16_to_cpu(shdr->CreditRequest);
|
|
spin_unlock(&server->req_lock);
|
|
wake_up(&server->request_q);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
smb2_is_session_expired(char *buf)
|
|
{
|
|
struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
|
|
|
|
if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED)
|
|
return false;
|
|
|
|
cifs_dbg(FYI, "Session expired\n");
|
|
return true;
|
|
}
|
|
|
|
static int
|
|
smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
|
|
struct cifsInodeInfo *cinode)
|
|
{
|
|
if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
|
|
return SMB2_lease_break(0, tcon, cinode->lease_key,
|
|
smb2_get_lease_state(cinode));
|
|
|
|
return SMB2_oplock_break(0, tcon, fid->persistent_fid,
|
|
fid->volatile_fid,
|
|
CIFS_CACHE_READ(cinode) ? 1 : 0);
|
|
}
|
|
|
|
static int
|
|
smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct kstatfs *buf)
|
|
{
|
|
int rc;
|
|
__le16 srch_path = 0; /* Null - open root of share */
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = 0;
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
|
|
if (rc)
|
|
return rc;
|
|
buf->f_type = SMB2_MAGIC_NUMBER;
|
|
rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
|
|
buf);
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
return rc;
|
|
}
|
|
|
|
static bool
|
|
smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
|
|
{
|
|
return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
|
|
ob1->fid.volatile_fid == ob2->fid.volatile_fid;
|
|
}
|
|
|
|
static int
|
|
smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
|
|
__u64 length, __u32 type, int lock, int unlock, bool wait)
|
|
{
|
|
if (unlock && !lock)
|
|
type = SMB2_LOCKFLAG_UNLOCK;
|
|
return SMB2_lock(xid, tlink_tcon(cfile->tlink),
|
|
cfile->fid.persistent_fid, cfile->fid.volatile_fid,
|
|
current->tgid, length, offset, type, wait);
|
|
}
|
|
|
|
static void
|
|
smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
|
|
{
|
|
memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
|
|
}
|
|
|
|
static void
|
|
smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
|
|
{
|
|
memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
|
|
}
|
|
|
|
static void
|
|
smb2_new_lease_key(struct cifs_fid *fid)
|
|
{
|
|
generate_random_uuid(fid->lease_key);
|
|
}
|
|
|
|
static int
|
|
smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
|
|
const char *search_name,
|
|
struct dfs_info3_param **target_nodes,
|
|
unsigned int *num_of_nodes,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc;
|
|
__le16 *utf16_path = NULL;
|
|
int utf16_path_len = 0;
|
|
struct cifs_tcon *tcon;
|
|
struct fsctl_get_dfs_referral_req *dfs_req = NULL;
|
|
struct get_dfs_referral_rsp *dfs_rsp = NULL;
|
|
u32 dfs_req_size = 0, dfs_rsp_size = 0;
|
|
|
|
cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
|
|
|
|
/*
|
|
* Use any tcon from the current session. Here, the first one.
|
|
*/
|
|
spin_lock(&cifs_tcp_ses_lock);
|
|
tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon,
|
|
tcon_list);
|
|
if (tcon)
|
|
tcon->tc_count++;
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
|
|
if (!tcon) {
|
|
cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
|
|
ses);
|
|
rc = -ENOTCONN;
|
|
goto out;
|
|
}
|
|
|
|
utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
|
|
&utf16_path_len,
|
|
nls_codepage, remap);
|
|
if (!utf16_path) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
|
|
dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
|
|
if (!dfs_req) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
/* Highest DFS referral version understood */
|
|
dfs_req->MaxReferralLevel = DFS_VERSION;
|
|
|
|
/* Path to resolve in an UTF-16 null-terminated string */
|
|
memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
|
|
|
|
do {
|
|
/* try first with IPC */
|
|
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
|
|
FSCTL_DFS_GET_REFERRALS,
|
|
true /* is_fsctl */, true /* use_ipc */,
|
|
(char *)dfs_req, dfs_req_size,
|
|
(char **)&dfs_rsp, &dfs_rsp_size);
|
|
if (rc == -ENOTCONN) {
|
|
/* try with normal tcon */
|
|
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
|
|
FSCTL_DFS_GET_REFERRALS,
|
|
true /* is_fsctl */, false /*use_ipc*/,
|
|
(char *)dfs_req, dfs_req_size,
|
|
(char **)&dfs_rsp, &dfs_rsp_size);
|
|
}
|
|
} while (rc == -EAGAIN);
|
|
|
|
if (rc) {
|
|
cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
|
|
goto out;
|
|
}
|
|
|
|
rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
|
|
num_of_nodes, target_nodes,
|
|
nls_codepage, remap, search_name,
|
|
true /* is_unicode */);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
if (tcon) {
|
|
spin_lock(&cifs_tcp_ses_lock);
|
|
tcon->tc_count--;
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
}
|
|
kfree(utf16_path);
|
|
kfree(dfs_req);
|
|
kfree(dfs_rsp);
|
|
return rc;
|
|
}
|
|
#define SMB2_SYMLINK_STRUCT_SIZE \
|
|
(sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
|
|
|
|
static int
|
|
smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *full_path, char **target_path,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
int rc;
|
|
__le16 *utf16_path;
|
|
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
struct cifs_open_parms oparms;
|
|
struct cifs_fid fid;
|
|
struct smb2_err_rsp *err_buf = NULL;
|
|
struct smb2_symlink_err_rsp *symlink;
|
|
unsigned int sub_len;
|
|
unsigned int sub_offset;
|
|
unsigned int print_len;
|
|
unsigned int print_offset;
|
|
|
|
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
|
|
if (!utf16_path)
|
|
return -ENOMEM;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = FILE_READ_ATTRIBUTES;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.create_options = 0;
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
|
|
|
|
if (!rc || !err_buf) {
|
|
kfree(utf16_path);
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
|
|
get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) {
|
|
kfree(utf16_path);
|
|
return -ENOENT;
|
|
}
|
|
|
|
/* open must fail on symlink - reset rc */
|
|
rc = 0;
|
|
symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
|
|
sub_len = le16_to_cpu(symlink->SubstituteNameLength);
|
|
sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
|
|
print_len = le16_to_cpu(symlink->PrintNameLength);
|
|
print_offset = le16_to_cpu(symlink->PrintNameOffset);
|
|
|
|
if (get_rfc1002_length(err_buf) + 4 <
|
|
SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
|
|
kfree(utf16_path);
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (get_rfc1002_length(err_buf) + 4 <
|
|
SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
|
|
kfree(utf16_path);
|
|
return -ENOENT;
|
|
}
|
|
|
|
*target_path = cifs_strndup_from_utf16(
|
|
(char *)symlink->PathBuffer + sub_offset,
|
|
sub_len, true, cifs_sb->local_nls);
|
|
if (!(*target_path)) {
|
|
kfree(utf16_path);
|
|
return -ENOMEM;
|
|
}
|
|
convert_delimiter(*target_path, '/');
|
|
cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
|
|
kfree(utf16_path);
|
|
return rc;
|
|
}
|
|
|
|
#ifdef CONFIG_CIFS_ACL
|
|
static struct cifs_ntsd *
|
|
get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
|
|
const struct cifs_fid *cifsfid, u32 *pacllen)
|
|
{
|
|
struct cifs_ntsd *pntsd = NULL;
|
|
unsigned int xid;
|
|
int rc = -EOPNOTSUPP;
|
|
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
|
|
|
|
if (IS_ERR(tlink))
|
|
return ERR_CAST(tlink);
|
|
|
|
xid = get_xid();
|
|
cifs_dbg(FYI, "trying to get acl\n");
|
|
|
|
rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
|
|
cifsfid->volatile_fid, (void **)&pntsd, pacllen);
|
|
free_xid(xid);
|
|
|
|
cifs_put_tlink(tlink);
|
|
|
|
cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
|
|
if (rc)
|
|
return ERR_PTR(rc);
|
|
return pntsd;
|
|
|
|
}
|
|
|
|
static struct cifs_ntsd *
|
|
get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
|
|
const char *path, u32 *pacllen)
|
|
{
|
|
struct cifs_ntsd *pntsd = NULL;
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
unsigned int xid;
|
|
int rc;
|
|
struct cifs_tcon *tcon;
|
|
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
|
|
struct cifs_fid fid;
|
|
struct cifs_open_parms oparms;
|
|
__le16 *utf16_path;
|
|
|
|
cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
|
|
if (IS_ERR(tlink))
|
|
return ERR_CAST(tlink);
|
|
|
|
tcon = tlink_tcon(tlink);
|
|
xid = get_xid();
|
|
|
|
if (backup_cred(cifs_sb))
|
|
oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
|
|
else
|
|
oparms.create_options = 0;
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
|
if (!utf16_path)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = READ_CONTROL;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
|
|
kfree(utf16_path);
|
|
if (!rc) {
|
|
rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
|
|
fid.volatile_fid, (void **)&pntsd, pacllen);
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
}
|
|
|
|
cifs_put_tlink(tlink);
|
|
free_xid(xid);
|
|
|
|
cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
|
|
if (rc)
|
|
return ERR_PTR(rc);
|
|
return pntsd;
|
|
}
|
|
|
|
#ifdef CONFIG_CIFS_ACL
|
|
static int
|
|
set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
|
|
struct inode *inode, const char *path, int aclflag)
|
|
{
|
|
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
unsigned int xid;
|
|
int rc, access_flags = 0;
|
|
struct cifs_tcon *tcon;
|
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
|
|
struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
|
|
struct cifs_fid fid;
|
|
struct cifs_open_parms oparms;
|
|
__le16 *utf16_path;
|
|
|
|
cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
|
|
if (IS_ERR(tlink))
|
|
return PTR_ERR(tlink);
|
|
|
|
tcon = tlink_tcon(tlink);
|
|
xid = get_xid();
|
|
|
|
if (backup_cred(cifs_sb))
|
|
oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
|
|
else
|
|
oparms.create_options = 0;
|
|
|
|
if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
|
|
access_flags = WRITE_OWNER;
|
|
else
|
|
access_flags = WRITE_DAC;
|
|
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
|
if (!utf16_path)
|
|
return -ENOMEM;
|
|
|
|
oparms.tcon = tcon;
|
|
oparms.desired_access = access_flags;
|
|
oparms.disposition = FILE_OPEN;
|
|
oparms.path = path;
|
|
oparms.fid = &fid;
|
|
oparms.reconnect = false;
|
|
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
|
|
kfree(utf16_path);
|
|
if (!rc) {
|
|
rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
|
|
fid.volatile_fid, pnntsd, acllen, aclflag);
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
|
}
|
|
|
|
cifs_put_tlink(tlink);
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
#endif /* CIFS_ACL */
|
|
|
|
/* Retrieve an ACL from the server */
|
|
static struct cifs_ntsd *
|
|
get_smb2_acl(struct cifs_sb_info *cifs_sb,
|
|
struct inode *inode, const char *path,
|
|
u32 *pacllen)
|
|
{
|
|
struct cifs_ntsd *pntsd = NULL;
|
|
struct cifsFileInfo *open_file = NULL;
|
|
|
|
if (inode)
|
|
open_file = find_readable_file(CIFS_I(inode), true);
|
|
if (!open_file)
|
|
return get_smb2_acl_by_path(cifs_sb, path, pacllen);
|
|
|
|
pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
|
|
cifsFileInfo_put(open_file);
|
|
return pntsd;
|
|
}
|
|
#endif
|
|
|
|
static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
|
|
loff_t offset, loff_t len, bool keep_size)
|
|
{
|
|
struct inode *inode;
|
|
struct cifsInodeInfo *cifsi;
|
|
struct cifsFileInfo *cfile = file->private_data;
|
|
struct file_zero_data_information fsctl_buf;
|
|
long rc;
|
|
unsigned int xid;
|
|
|
|
xid = get_xid();
|
|
|
|
inode = d_inode(cfile->dentry);
|
|
cifsi = CIFS_I(inode);
|
|
|
|
/* if file not oplocked can't be sure whether asking to extend size */
|
|
if (!CIFS_CACHE_READ(cifsi))
|
|
if (keep_size == false)
|
|
return -EOPNOTSUPP;
|
|
|
|
/*
|
|
* Must check if file sparse since fallocate -z (zero range) assumes
|
|
* non-sparse allocation
|
|
*/
|
|
if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
|
|
return -EOPNOTSUPP;
|
|
|
|
/*
|
|
* need to make sure we are not asked to extend the file since the SMB3
|
|
* fsctl does not change the file size. In the future we could change
|
|
* this to zero the first part of the range then set the file size
|
|
* which for a non sparse file would zero the newly extended range
|
|
*/
|
|
if (keep_size == false)
|
|
if (i_size_read(inode) < offset + len)
|
|
return -EOPNOTSUPP;
|
|
|
|
cifs_dbg(FYI, "offset %lld len %lld", offset, len);
|
|
|
|
fsctl_buf.FileOffset = cpu_to_le64(offset);
|
|
fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
|
|
true /* is_fctl */, false /* use_ipc */,
|
|
(char *)&fsctl_buf,
|
|
sizeof(struct file_zero_data_information), NULL, NULL);
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
|
|
loff_t offset, loff_t len)
|
|
{
|
|
struct inode *inode;
|
|
struct cifsInodeInfo *cifsi;
|
|
struct cifsFileInfo *cfile = file->private_data;
|
|
struct file_zero_data_information fsctl_buf;
|
|
long rc;
|
|
unsigned int xid;
|
|
__u8 set_sparse = 1;
|
|
|
|
xid = get_xid();
|
|
|
|
inode = d_inode(cfile->dentry);
|
|
cifsi = CIFS_I(inode);
|
|
|
|
/* Need to make file sparse, if not already, before freeing range. */
|
|
/* Consider adding equivalent for compressed since it could also work */
|
|
if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
|
|
return -EOPNOTSUPP;
|
|
|
|
cifs_dbg(FYI, "offset %lld len %lld", offset, len);
|
|
|
|
fsctl_buf.FileOffset = cpu_to_le64(offset);
|
|
fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
|
|
|
|
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
|
|
cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
|
|
true /* is_fctl */, false /* use_ipc */,
|
|
(char *)&fsctl_buf,
|
|
sizeof(struct file_zero_data_information), NULL, NULL);
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
|
|
loff_t off, loff_t len, bool keep_size)
|
|
{
|
|
struct inode *inode;
|
|
struct cifsInodeInfo *cifsi;
|
|
struct cifsFileInfo *cfile = file->private_data;
|
|
long rc = -EOPNOTSUPP;
|
|
unsigned int xid;
|
|
|
|
xid = get_xid();
|
|
|
|
inode = d_inode(cfile->dentry);
|
|
cifsi = CIFS_I(inode);
|
|
|
|
/* if file not oplocked can't be sure whether asking to extend size */
|
|
if (!CIFS_CACHE_READ(cifsi))
|
|
if (keep_size == false)
|
|
return -EOPNOTSUPP;
|
|
|
|
/*
|
|
* Files are non-sparse by default so falloc may be a no-op
|
|
* Must check if file sparse. If not sparse, and not extending
|
|
* then no need to do anything since file already allocated
|
|
*/
|
|
if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
|
|
if (keep_size == true)
|
|
return 0;
|
|
/* check if extending file */
|
|
else if (i_size_read(inode) >= off + len)
|
|
/* not extending file and already not sparse */
|
|
return 0;
|
|
/* BB: in future add else clause to extend file */
|
|
else
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
|
|
/*
|
|
* Check if falloc starts within first few pages of file
|
|
* and ends within a few pages of the end of file to
|
|
* ensure that most of file is being forced to be
|
|
* fallocated now. If so then setting whole file sparse
|
|
* ie potentially making a few extra pages at the beginning
|
|
* or end of the file non-sparse via set_sparse is harmless.
|
|
*/
|
|
if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
|
|
return -EOPNOTSUPP;
|
|
|
|
rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
|
|
}
|
|
/* BB: else ... in future add code to extend file and set sparse */
|
|
|
|
|
|
free_xid(xid);
|
|
return rc;
|
|
}
|
|
|
|
|
|
static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
|
|
loff_t off, loff_t len)
|
|
{
|
|
/* KEEP_SIZE already checked for by do_fallocate */
|
|
if (mode & FALLOC_FL_PUNCH_HOLE)
|
|
return smb3_punch_hole(file, tcon, off, len);
|
|
else if (mode & FALLOC_FL_ZERO_RANGE) {
|
|
if (mode & FALLOC_FL_KEEP_SIZE)
|
|
return smb3_zero_range(file, tcon, off, len, true);
|
|
return smb3_zero_range(file, tcon, off, len, false);
|
|
} else if (mode == FALLOC_FL_KEEP_SIZE)
|
|
return smb3_simple_falloc(file, tcon, off, len, true);
|
|
else if (mode == 0)
|
|
return smb3_simple_falloc(file, tcon, off, len, false);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void
|
|
smb2_downgrade_oplock(struct TCP_Server_Info *server,
|
|
struct cifsInodeInfo *cinode, bool set_level2)
|
|
{
|
|
if (set_level2)
|
|
server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
|
|
0, NULL);
|
|
else
|
|
server->ops->set_oplock_level(cinode, 0, 0, NULL);
|
|
}
|
|
|
|
static void
|
|
smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
|
|
unsigned int epoch, bool *purge_cache)
|
|
{
|
|
oplock &= 0xFF;
|
|
if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
|
|
return;
|
|
if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
|
|
cinode->oplock = CIFS_CACHE_RHW_FLG;
|
|
cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
|
|
&cinode->vfs_inode);
|
|
} else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
|
|
cinode->oplock = CIFS_CACHE_RW_FLG;
|
|
cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
|
|
&cinode->vfs_inode);
|
|
} else if (oplock == SMB2_OPLOCK_LEVEL_II) {
|
|
cinode->oplock = CIFS_CACHE_READ_FLG;
|
|
cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
|
|
&cinode->vfs_inode);
|
|
} else
|
|
cinode->oplock = 0;
|
|
}
|
|
|
|
static void
|
|
smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
|
|
unsigned int epoch, bool *purge_cache)
|
|
{
|
|
char message[5] = {0};
|
|
|
|
oplock &= 0xFF;
|
|
if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
|
|
return;
|
|
|
|
cinode->oplock = 0;
|
|
if (oplock & SMB2_LEASE_READ_CACHING_HE) {
|
|
cinode->oplock |= CIFS_CACHE_READ_FLG;
|
|
strcat(message, "R");
|
|
}
|
|
if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
|
|
cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
|
|
strcat(message, "H");
|
|
}
|
|
if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
|
|
cinode->oplock |= CIFS_CACHE_WRITE_FLG;
|
|
strcat(message, "W");
|
|
}
|
|
if (!cinode->oplock)
|
|
strcat(message, "None");
|
|
cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
|
|
&cinode->vfs_inode);
|
|
}
|
|
|
|
static void
|
|
smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
|
|
unsigned int epoch, bool *purge_cache)
|
|
{
|
|
unsigned int old_oplock = cinode->oplock;
|
|
|
|
smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
|
|
|
|
if (purge_cache) {
|
|
*purge_cache = false;
|
|
if (old_oplock == CIFS_CACHE_READ_FLG) {
|
|
if (cinode->oplock == CIFS_CACHE_READ_FLG &&
|
|
(epoch - cinode->epoch > 0))
|
|
*purge_cache = true;
|
|
else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
|
|
(epoch - cinode->epoch > 1))
|
|
*purge_cache = true;
|
|
else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
|
|
(epoch - cinode->epoch > 1))
|
|
*purge_cache = true;
|
|
else if (cinode->oplock == 0 &&
|
|
(epoch - cinode->epoch > 0))
|
|
*purge_cache = true;
|
|
} else if (old_oplock == CIFS_CACHE_RH_FLG) {
|
|
if (cinode->oplock == CIFS_CACHE_RH_FLG &&
|
|
(epoch - cinode->epoch > 0))
|
|
*purge_cache = true;
|
|
else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
|
|
(epoch - cinode->epoch > 1))
|
|
*purge_cache = true;
|
|
}
|
|
cinode->epoch = epoch;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
smb2_is_read_op(__u32 oplock)
|
|
{
|
|
return oplock == SMB2_OPLOCK_LEVEL_II;
|
|
}
|
|
|
|
static bool
|
|
smb21_is_read_op(__u32 oplock)
|
|
{
|
|
return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
|
|
!(oplock & SMB2_LEASE_WRITE_CACHING_HE);
|
|
}
|
|
|
|
static __le32
|
|
map_oplock_to_lease(u8 oplock)
|
|
{
|
|
if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
|
|
return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
|
|
else if (oplock == SMB2_OPLOCK_LEVEL_II)
|
|
return SMB2_LEASE_READ_CACHING;
|
|
else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
|
|
return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
|
|
SMB2_LEASE_WRITE_CACHING;
|
|
return 0;
|
|
}
|
|
|
|
static char *
|
|
smb2_create_lease_buf(u8 *lease_key, u8 oplock)
|
|
{
|
|
struct create_lease *buf;
|
|
|
|
buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
|
|
if (!buf)
|
|
return NULL;
|
|
|
|
buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
|
|
buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
|
|
buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
|
|
|
|
buf->ccontext.DataOffset = cpu_to_le16(offsetof
|
|
(struct create_lease, lcontext));
|
|
buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
|
|
buf->ccontext.NameOffset = cpu_to_le16(offsetof
|
|
(struct create_lease, Name));
|
|
buf->ccontext.NameLength = cpu_to_le16(4);
|
|
/* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
|
|
buf->Name[0] = 'R';
|
|
buf->Name[1] = 'q';
|
|
buf->Name[2] = 'L';
|
|
buf->Name[3] = 's';
|
|
return (char *)buf;
|
|
}
|
|
|
|
static char *
|
|
smb3_create_lease_buf(u8 *lease_key, u8 oplock)
|
|
{
|
|
struct create_lease_v2 *buf;
|
|
|
|
buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
|
|
if (!buf)
|
|
return NULL;
|
|
|
|
buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
|
|
buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
|
|
buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
|
|
|
|
buf->ccontext.DataOffset = cpu_to_le16(offsetof
|
|
(struct create_lease_v2, lcontext));
|
|
buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
|
|
buf->ccontext.NameOffset = cpu_to_le16(offsetof
|
|
(struct create_lease_v2, Name));
|
|
buf->ccontext.NameLength = cpu_to_le16(4);
|
|
/* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
|
|
buf->Name[0] = 'R';
|
|
buf->Name[1] = 'q';
|
|
buf->Name[2] = 'L';
|
|
buf->Name[3] = 's';
|
|
return (char *)buf;
|
|
}
|
|
|
|
static __u8
|
|
smb2_parse_lease_buf(void *buf, unsigned int *epoch)
|
|
{
|
|
struct create_lease *lc = (struct create_lease *)buf;
|
|
|
|
*epoch = 0; /* not used */
|
|
if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
|
|
return SMB2_OPLOCK_LEVEL_NOCHANGE;
|
|
return le32_to_cpu(lc->lcontext.LeaseState);
|
|
}
|
|
|
|
static __u8
|
|
smb3_parse_lease_buf(void *buf, unsigned int *epoch)
|
|
{
|
|
struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
|
|
|
|
*epoch = le16_to_cpu(lc->lcontext.Epoch);
|
|
if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
|
|
return SMB2_OPLOCK_LEVEL_NOCHANGE;
|
|
return le32_to_cpu(lc->lcontext.LeaseState);
|
|
}
|
|
|
|
static unsigned int
|
|
smb2_wp_retry_size(struct inode *inode)
|
|
{
|
|
return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
|
|
SMB2_MAX_BUFFER_SIZE);
|
|
}
|
|
|
|
static bool
|
|
smb2_dir_needs_close(struct cifsFileInfo *cfile)
|
|
{
|
|
return !cfile->invalidHandle;
|
|
}
|
|
|
|
static void
|
|
fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq)
|
|
{
|
|
struct smb2_sync_hdr *shdr =
|
|
(struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
|
|
unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
|
|
|
|
memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
|
|
tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
|
|
tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
|
|
tr_hdr->Flags = cpu_to_le16(0x01);
|
|
get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
|
|
memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
|
|
inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4);
|
|
inc_rfc1001_len(tr_hdr, orig_len);
|
|
}
|
|
|
|
static struct scatterlist *
|
|
init_sg(struct smb_rqst *rqst, u8 *sign)
|
|
{
|
|
unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
|
|
unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
|
|
struct scatterlist *sg;
|
|
unsigned int i;
|
|
unsigned int j;
|
|
|
|
sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
|
|
if (!sg)
|
|
return NULL;
|
|
|
|
sg_init_table(sg, sg_len);
|
|
sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len);
|
|
for (i = 1; i < rqst->rq_nvec; i++)
|
|
sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
|
|
rqst->rq_iov[i].iov_len);
|
|
for (j = 0; i < sg_len - 1; i++, j++) {
|
|
unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
|
|
: rqst->rq_tailsz;
|
|
sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
|
|
}
|
|
sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
|
|
return sg;
|
|
}
|
|
|
|
struct cifs_crypt_result {
|
|
int err;
|
|
struct completion completion;
|
|
};
|
|
|
|
static void cifs_crypt_complete(struct crypto_async_request *req, int err)
|
|
{
|
|
struct cifs_crypt_result *res = req->data;
|
|
|
|
if (err == -EINPROGRESS)
|
|
return;
|
|
|
|
res->err = err;
|
|
complete(&res->completion);
|
|
}
|
|
|
|
static int
|
|
smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
|
|
{
|
|
struct cifs_ses *ses;
|
|
u8 *ses_enc_key;
|
|
|
|
spin_lock(&cifs_tcp_ses_lock);
|
|
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
|
|
if (ses->Suid != ses_id)
|
|
continue;
|
|
ses_enc_key = enc ? ses->smb3encryptionkey :
|
|
ses->smb3decryptionkey;
|
|
memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
return 0;
|
|
}
|
|
spin_unlock(&cifs_tcp_ses_lock);
|
|
|
|
return 1;
|
|
}
|
|
/*
|
|
* Encrypt or decrypt @rqst message. @rqst has the following format:
|
|
* iov[0] - transform header (associate data),
|
|
* iov[1-N] and pages - data to encrypt.
|
|
* On success return encrypted data in iov[1-N] and pages, leave iov[0]
|
|
* untouched.
|
|
*/
|
|
static int
|
|
crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
|
|
{
|
|
struct smb2_transform_hdr *tr_hdr =
|
|
(struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
|
|
unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
|
|
int rc = 0;
|
|
struct scatterlist *sg;
|
|
u8 sign[SMB2_SIGNATURE_SIZE] = {};
|
|
u8 key[SMB3_SIGN_KEY_SIZE];
|
|
struct aead_request *req;
|
|
char *iv;
|
|
unsigned int iv_len;
|
|
struct cifs_crypt_result result = {0, };
|
|
struct crypto_aead *tfm;
|
|
unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
|
|
|
|
init_completion(&result.completion);
|
|
|
|
rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
|
|
enc ? "en" : "de");
|
|
return 0;
|
|
}
|
|
|
|
rc = smb3_crypto_aead_allocate(server);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
|
|
return rc;
|
|
}
|
|
|
|
tfm = enc ? server->secmech.ccmaesencrypt :
|
|
server->secmech.ccmaesdecrypt;
|
|
rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
|
|
return rc;
|
|
}
|
|
|
|
req = aead_request_alloc(tfm, GFP_KERNEL);
|
|
if (!req) {
|
|
cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (!enc) {
|
|
memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
|
|
crypt_len += SMB2_SIGNATURE_SIZE;
|
|
}
|
|
|
|
sg = init_sg(rqst, sign);
|
|
if (!sg) {
|
|
cifs_dbg(VFS, "%s: Failed to init sg", __func__);
|
|
rc = -ENOMEM;
|
|
goto free_req;
|
|
}
|
|
|
|
iv_len = crypto_aead_ivsize(tfm);
|
|
iv = kzalloc(iv_len, GFP_KERNEL);
|
|
if (!iv) {
|
|
cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
|
|
rc = -ENOMEM;
|
|
goto free_sg;
|
|
}
|
|
iv[0] = 3;
|
|
memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
|
|
|
|
aead_request_set_crypt(req, sg, sg, crypt_len, iv);
|
|
aead_request_set_ad(req, assoc_data_len);
|
|
|
|
aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
|
|
cifs_crypt_complete, &result);
|
|
|
|
rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
|
|
|
|
if (rc == -EINPROGRESS || rc == -EBUSY) {
|
|
wait_for_completion(&result.completion);
|
|
rc = result.err;
|
|
}
|
|
|
|
if (!rc && enc)
|
|
memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
|
|
|
|
kfree(iv);
|
|
free_sg:
|
|
kfree(sg);
|
|
free_req:
|
|
kfree(req);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
|
|
struct smb_rqst *old_rq)
|
|
{
|
|
struct kvec *iov;
|
|
struct page **pages;
|
|
struct smb2_transform_hdr *tr_hdr;
|
|
unsigned int npages = old_rq->rq_npages;
|
|
int i;
|
|
int rc = -ENOMEM;
|
|
|
|
pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
|
|
if (!pages)
|
|
return rc;
|
|
|
|
new_rq->rq_pages = pages;
|
|
new_rq->rq_npages = old_rq->rq_npages;
|
|
new_rq->rq_pagesz = old_rq->rq_pagesz;
|
|
new_rq->rq_tailsz = old_rq->rq_tailsz;
|
|
|
|
for (i = 0; i < npages; i++) {
|
|
pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
|
|
if (!pages[i])
|
|
goto err_free_pages;
|
|
}
|
|
|
|
iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL);
|
|
if (!iov)
|
|
goto err_free_pages;
|
|
|
|
/* copy all iovs from the old except the 1st one (rfc1002 length) */
|
|
memcpy(&iov[1], &old_rq->rq_iov[1],
|
|
sizeof(struct kvec) * (old_rq->rq_nvec - 1));
|
|
new_rq->rq_iov = iov;
|
|
new_rq->rq_nvec = old_rq->rq_nvec;
|
|
|
|
tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
|
|
if (!tr_hdr)
|
|
goto err_free_iov;
|
|
|
|
/* fill the 1st iov with a transform header */
|
|
fill_transform_hdr(tr_hdr, old_rq);
|
|
new_rq->rq_iov[0].iov_base = tr_hdr;
|
|
new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
|
|
|
|
/* copy pages form the old */
|
|
for (i = 0; i < npages; i++) {
|
|
char *dst = kmap(new_rq->rq_pages[i]);
|
|
char *src = kmap(old_rq->rq_pages[i]);
|
|
unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
|
|
new_rq->rq_tailsz;
|
|
memcpy(dst, src, len);
|
|
kunmap(new_rq->rq_pages[i]);
|
|
kunmap(old_rq->rq_pages[i]);
|
|
}
|
|
|
|
rc = crypt_message(server, new_rq, 1);
|
|
cifs_dbg(FYI, "encrypt message returned %d", rc);
|
|
if (rc)
|
|
goto err_free_tr_hdr;
|
|
|
|
return rc;
|
|
|
|
err_free_tr_hdr:
|
|
kfree(tr_hdr);
|
|
err_free_iov:
|
|
kfree(iov);
|
|
err_free_pages:
|
|
for (i = i - 1; i >= 0; i--)
|
|
put_page(pages[i]);
|
|
kfree(pages);
|
|
return rc;
|
|
}
|
|
|
|
static void
|
|
smb3_free_transform_rq(struct smb_rqst *rqst)
|
|
{
|
|
int i = rqst->rq_npages - 1;
|
|
|
|
for (; i >= 0; i--)
|
|
put_page(rqst->rq_pages[i]);
|
|
kfree(rqst->rq_pages);
|
|
/* free transform header */
|
|
kfree(rqst->rq_iov[0].iov_base);
|
|
kfree(rqst->rq_iov);
|
|
}
|
|
|
|
static int
|
|
smb3_is_transform_hdr(void *buf)
|
|
{
|
|
struct smb2_transform_hdr *trhdr = buf;
|
|
|
|
return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
|
|
}
|
|
|
|
static int
|
|
decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
|
|
unsigned int buf_data_size, struct page **pages,
|
|
unsigned int npages, unsigned int page_data_size)
|
|
{
|
|
struct kvec iov[2];
|
|
struct smb_rqst rqst = {NULL};
|
|
struct smb2_hdr *hdr;
|
|
int rc;
|
|
|
|
iov[0].iov_base = buf;
|
|
iov[0].iov_len = sizeof(struct smb2_transform_hdr);
|
|
iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
|
|
iov[1].iov_len = buf_data_size;
|
|
|
|
rqst.rq_iov = iov;
|
|
rqst.rq_nvec = 2;
|
|
rqst.rq_pages = pages;
|
|
rqst.rq_npages = npages;
|
|
rqst.rq_pagesz = PAGE_SIZE;
|
|
rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
|
|
|
|
rc = crypt_message(server, &rqst, 0);
|
|
cifs_dbg(FYI, "decrypt message returned %d\n", rc);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
memmove(buf + 4, iov[1].iov_base, buf_data_size);
|
|
hdr = (struct smb2_hdr *)buf;
|
|
hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size);
|
|
server->total_read = buf_data_size + page_data_size + 4;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
|
|
unsigned int npages, unsigned int len)
|
|
{
|
|
int i;
|
|
int length;
|
|
|
|
for (i = 0; i < npages; i++) {
|
|
struct page *page = pages[i];
|
|
size_t n;
|
|
|
|
n = len;
|
|
if (len >= PAGE_SIZE) {
|
|
/* enough data to fill the page */
|
|
n = PAGE_SIZE;
|
|
len -= n;
|
|
} else {
|
|
zero_user(page, len, PAGE_SIZE - len);
|
|
len = 0;
|
|
}
|
|
length = cifs_read_page_from_socket(server, page, n);
|
|
if (length < 0)
|
|
return length;
|
|
server->total_read += length;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
|
|
unsigned int cur_off, struct bio_vec **page_vec)
|
|
{
|
|
struct bio_vec *bvec;
|
|
int i;
|
|
|
|
bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
|
|
if (!bvec)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < npages; i++) {
|
|
bvec[i].bv_page = pages[i];
|
|
bvec[i].bv_offset = (i == 0) ? cur_off : 0;
|
|
bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
|
|
data_size -= bvec[i].bv_len;
|
|
}
|
|
|
|
if (data_size != 0) {
|
|
cifs_dbg(VFS, "%s: something went wrong\n", __func__);
|
|
kfree(bvec);
|
|
return -EIO;
|
|
}
|
|
|
|
*page_vec = bvec;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
|
|
char *buf, unsigned int buf_len, struct page **pages,
|
|
unsigned int npages, unsigned int page_data_size)
|
|
{
|
|
unsigned int data_offset;
|
|
unsigned int data_len;
|
|
unsigned int cur_off;
|
|
unsigned int cur_page_idx;
|
|
unsigned int pad_len;
|
|
struct cifs_readdata *rdata = mid->callback_data;
|
|
struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
|
|
struct bio_vec *bvec = NULL;
|
|
struct iov_iter iter;
|
|
struct kvec iov;
|
|
int length;
|
|
|
|
if (shdr->Command != SMB2_READ) {
|
|
cifs_dbg(VFS, "only big read responses are supported\n");
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
if (server->ops->is_session_expired &&
|
|
server->ops->is_session_expired(buf)) {
|
|
cifs_reconnect(server);
|
|
wake_up(&server->response_q);
|
|
return -1;
|
|
}
|
|
|
|
if (server->ops->is_status_pending &&
|
|
server->ops->is_status_pending(buf, server, 0))
|
|
return -1;
|
|
|
|
rdata->result = server->ops->map_error(buf, false);
|
|
if (rdata->result != 0) {
|
|
cifs_dbg(FYI, "%s: server returned error %d\n",
|
|
__func__, rdata->result);
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
data_offset = server->ops->read_data_offset(buf) + 4;
|
|
data_len = server->ops->read_data_length(buf);
|
|
|
|
if (data_offset < server->vals->read_rsp_size) {
|
|
/*
|
|
* win2k8 sometimes sends an offset of 0 when the read
|
|
* is beyond the EOF. Treat it as if the data starts just after
|
|
* the header.
|
|
*/
|
|
cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
|
|
__func__, data_offset);
|
|
data_offset = server->vals->read_rsp_size;
|
|
} else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
|
|
/* data_offset is beyond the end of smallbuf */
|
|
cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
|
|
__func__, data_offset);
|
|
rdata->result = -EIO;
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
pad_len = data_offset - server->vals->read_rsp_size;
|
|
|
|
if (buf_len <= data_offset) {
|
|
/* read response payload is in pages */
|
|
cur_page_idx = pad_len / PAGE_SIZE;
|
|
cur_off = pad_len % PAGE_SIZE;
|
|
|
|
if (cur_page_idx != 0) {
|
|
/* data offset is beyond the 1st page of response */
|
|
cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
|
|
__func__, data_offset);
|
|
rdata->result = -EIO;
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
if (data_len > page_data_size - pad_len) {
|
|
/* data_len is corrupt -- discard frame */
|
|
rdata->result = -EIO;
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
rdata->result = init_read_bvec(pages, npages, page_data_size,
|
|
cur_off, &bvec);
|
|
if (rdata->result != 0) {
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
|
|
} else if (buf_len >= data_offset + data_len) {
|
|
/* read response payload is in buf */
|
|
WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
|
|
iov.iov_base = buf + data_offset;
|
|
iov.iov_len = data_len;
|
|
iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
|
|
} else {
|
|
/* read response payload cannot be in both buf and pages */
|
|
WARN_ONCE(1, "buf can not contain only a part of read data");
|
|
rdata->result = -EIO;
|
|
dequeue_mid(mid, rdata->result);
|
|
return 0;
|
|
}
|
|
|
|
/* set up first iov for signature check */
|
|
rdata->iov[0].iov_base = buf;
|
|
rdata->iov[0].iov_len = 4;
|
|
rdata->iov[1].iov_base = buf + 4;
|
|
rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
|
|
cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
|
|
rdata->iov[0].iov_base, server->vals->read_rsp_size);
|
|
|
|
length = rdata->copy_into_pages(server, rdata, &iter);
|
|
|
|
kfree(bvec);
|
|
|
|
if (length < 0)
|
|
return length;
|
|
|
|
dequeue_mid(mid, false);
|
|
return length;
|
|
}
|
|
|
|
static int
|
|
receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
|
|
{
|
|
char *buf = server->smallbuf;
|
|
struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
|
|
unsigned int npages;
|
|
struct page **pages;
|
|
unsigned int len;
|
|
unsigned int buflen = get_rfc1002_length(buf) + 4;
|
|
int rc;
|
|
int i = 0;
|
|
|
|
len = min_t(unsigned int, buflen, server->vals->read_rsp_size - 4 +
|
|
sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
|
|
|
|
rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
|
|
if (rc < 0)
|
|
return rc;
|
|
server->total_read += rc;
|
|
|
|
len = le32_to_cpu(tr_hdr->OriginalMessageSize) + 4 -
|
|
server->vals->read_rsp_size;
|
|
npages = DIV_ROUND_UP(len, PAGE_SIZE);
|
|
|
|
pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
|
|
if (!pages) {
|
|
rc = -ENOMEM;
|
|
goto discard_data;
|
|
}
|
|
|
|
for (; i < npages; i++) {
|
|
pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
|
|
if (!pages[i]) {
|
|
rc = -ENOMEM;
|
|
goto discard_data;
|
|
}
|
|
}
|
|
|
|
/* read read data into pages */
|
|
rc = read_data_into_pages(server, pages, npages, len);
|
|
if (rc)
|
|
goto free_pages;
|
|
|
|
rc = cifs_discard_remaining_data(server);
|
|
if (rc)
|
|
goto free_pages;
|
|
|
|
rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size - 4,
|
|
pages, npages, len);
|
|
if (rc)
|
|
goto free_pages;
|
|
|
|
*mid = smb2_find_mid(server, buf);
|
|
if (*mid == NULL)
|
|
cifs_dbg(FYI, "mid not found\n");
|
|
else {
|
|
cifs_dbg(FYI, "mid found\n");
|
|
(*mid)->decrypted = true;
|
|
rc = handle_read_data(server, *mid, buf,
|
|
server->vals->read_rsp_size,
|
|
pages, npages, len);
|
|
}
|
|
|
|
free_pages:
|
|
for (i = i - 1; i >= 0; i--)
|
|
put_page(pages[i]);
|
|
kfree(pages);
|
|
return rc;
|
|
discard_data:
|
|
cifs_discard_remaining_data(server);
|
|
goto free_pages;
|
|
}
|
|
|
|
static int
|
|
receive_encrypted_standard(struct TCP_Server_Info *server,
|
|
struct mid_q_entry **mid)
|
|
{
|
|
int length;
|
|
char *buf = server->smallbuf;
|
|
unsigned int pdu_length = get_rfc1002_length(buf);
|
|
unsigned int buf_size;
|
|
struct mid_q_entry *mid_entry;
|
|
|
|
/* switch to large buffer if too big for a small one */
|
|
if (pdu_length + 4 > MAX_CIFS_SMALL_BUFFER_SIZE) {
|
|
server->large_buf = true;
|
|
memcpy(server->bigbuf, buf, server->total_read);
|
|
buf = server->bigbuf;
|
|
}
|
|
|
|
/* now read the rest */
|
|
length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
|
|
pdu_length - HEADER_SIZE(server) + 1 + 4);
|
|
if (length < 0)
|
|
return length;
|
|
server->total_read += length;
|
|
|
|
buf_size = pdu_length + 4 - sizeof(struct smb2_transform_hdr);
|
|
length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
|
|
if (length)
|
|
return length;
|
|
|
|
mid_entry = smb2_find_mid(server, buf);
|
|
if (mid_entry == NULL)
|
|
cifs_dbg(FYI, "mid not found\n");
|
|
else {
|
|
cifs_dbg(FYI, "mid found\n");
|
|
mid_entry->decrypted = true;
|
|
}
|
|
|
|
*mid = mid_entry;
|
|
|
|
if (mid_entry && mid_entry->handle)
|
|
return mid_entry->handle(server, mid_entry);
|
|
|
|
return cifs_handle_standard(server, mid_entry);
|
|
}
|
|
|
|
static int
|
|
smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
|
|
{
|
|
char *buf = server->smallbuf;
|
|
unsigned int pdu_length = get_rfc1002_length(buf);
|
|
struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
|
|
unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
|
|
|
|
if (pdu_length + 4 < sizeof(struct smb2_transform_hdr) +
|
|
sizeof(struct smb2_sync_hdr)) {
|
|
cifs_dbg(VFS, "Transform message is too small (%u)\n",
|
|
pdu_length);
|
|
cifs_reconnect(server);
|
|
wake_up(&server->response_q);
|
|
return -ECONNABORTED;
|
|
}
|
|
|
|
if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) {
|
|
cifs_dbg(VFS, "Transform message is broken\n");
|
|
cifs_reconnect(server);
|
|
wake_up(&server->response_q);
|
|
return -ECONNABORTED;
|
|
}
|
|
|
|
if (pdu_length + 4 > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
|
|
return receive_encrypted_read(server, mid);
|
|
|
|
return receive_encrypted_standard(server, mid);
|
|
}
|
|
|
|
int
|
|
smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
|
|
{
|
|
char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
|
|
|
|
return handle_read_data(server, mid, buf, get_rfc1002_length(buf) + 4,
|
|
NULL, 0, 0);
|
|
}
|
|
|
|
struct smb_version_operations smb20_operations = {
|
|
.compare_fids = smb2_compare_fids,
|
|
.setup_request = smb2_setup_request,
|
|
.setup_async_request = smb2_setup_async_request,
|
|
.check_receive = smb2_check_receive,
|
|
.add_credits = smb2_add_credits,
|
|
.set_credits = smb2_set_credits,
|
|
.get_credits_field = smb2_get_credits_field,
|
|
.get_credits = smb2_get_credits,
|
|
.wait_mtu_credits = cifs_wait_mtu_credits,
|
|
.get_next_mid = smb2_get_next_mid,
|
|
.read_data_offset = smb2_read_data_offset,
|
|
.read_data_length = smb2_read_data_length,
|
|
.map_error = map_smb2_to_linux_error,
|
|
.find_mid = smb2_find_mid,
|
|
.check_message = smb2_check_message,
|
|
.dump_detail = smb2_dump_detail,
|
|
.clear_stats = smb2_clear_stats,
|
|
.print_stats = smb2_print_stats,
|
|
.is_oplock_break = smb2_is_valid_oplock_break,
|
|
.handle_cancelled_mid = smb2_handle_cancelled_mid,
|
|
.downgrade_oplock = smb2_downgrade_oplock,
|
|
.need_neg = smb2_need_neg,
|
|
.negotiate = smb2_negotiate,
|
|
.negotiate_wsize = smb2_negotiate_wsize,
|
|
.negotiate_rsize = smb2_negotiate_rsize,
|
|
.sess_setup = SMB2_sess_setup,
|
|
.logoff = SMB2_logoff,
|
|
.tree_connect = SMB2_tcon,
|
|
.tree_disconnect = SMB2_tdis,
|
|
.qfs_tcon = smb2_qfs_tcon,
|
|
.is_path_accessible = smb2_is_path_accessible,
|
|
.can_echo = smb2_can_echo,
|
|
.echo = SMB2_echo,
|
|
.query_path_info = smb2_query_path_info,
|
|
.get_srv_inum = smb2_get_srv_inum,
|
|
.query_file_info = smb2_query_file_info,
|
|
.set_path_size = smb2_set_path_size,
|
|
.set_file_size = smb2_set_file_size,
|
|
.set_file_info = smb2_set_file_info,
|
|
.set_compression = smb2_set_compression,
|
|
.mkdir = smb2_mkdir,
|
|
.mkdir_setinfo = smb2_mkdir_setinfo,
|
|
.rmdir = smb2_rmdir,
|
|
.unlink = smb2_unlink,
|
|
.rename = smb2_rename_path,
|
|
.create_hardlink = smb2_create_hardlink,
|
|
.query_symlink = smb2_query_symlink,
|
|
.query_mf_symlink = smb3_query_mf_symlink,
|
|
.create_mf_symlink = smb3_create_mf_symlink,
|
|
.open = smb2_open_file,
|
|
.set_fid = smb2_set_fid,
|
|
.close = smb2_close_file,
|
|
.flush = smb2_flush_file,
|
|
.async_readv = smb2_async_readv,
|
|
.async_writev = smb2_async_writev,
|
|
.sync_read = smb2_sync_read,
|
|
.sync_write = smb2_sync_write,
|
|
.query_dir_first = smb2_query_dir_first,
|
|
.query_dir_next = smb2_query_dir_next,
|
|
.close_dir = smb2_close_dir,
|
|
.calc_smb_size = smb2_calc_size,
|
|
.is_status_pending = smb2_is_status_pending,
|
|
.is_session_expired = smb2_is_session_expired,
|
|
.oplock_response = smb2_oplock_response,
|
|
.queryfs = smb2_queryfs,
|
|
.mand_lock = smb2_mand_lock,
|
|
.mand_unlock_range = smb2_unlock_range,
|
|
.push_mand_locks = smb2_push_mandatory_locks,
|
|
.get_lease_key = smb2_get_lease_key,
|
|
.set_lease_key = smb2_set_lease_key,
|
|
.new_lease_key = smb2_new_lease_key,
|
|
.calc_signature = smb2_calc_signature,
|
|
.is_read_op = smb2_is_read_op,
|
|
.set_oplock_level = smb2_set_oplock_level,
|
|
.create_lease_buf = smb2_create_lease_buf,
|
|
.parse_lease_buf = smb2_parse_lease_buf,
|
|
.copychunk_range = smb2_copychunk_range,
|
|
.wp_retry_size = smb2_wp_retry_size,
|
|
.dir_needs_close = smb2_dir_needs_close,
|
|
.get_dfs_refer = smb2_get_dfs_refer,
|
|
.select_sectype = smb2_select_sectype,
|
|
#ifdef CONFIG_CIFS_ACL
|
|
.get_acl = get_smb2_acl,
|
|
.get_acl_by_fid = get_smb2_acl_by_fid,
|
|
.set_acl = set_smb2_acl,
|
|
#endif /* CIFS_ACL */
|
|
};
|
|
|
|
struct smb_version_operations smb21_operations = {
|
|
.compare_fids = smb2_compare_fids,
|
|
.setup_request = smb2_setup_request,
|
|
.setup_async_request = smb2_setup_async_request,
|
|
.check_receive = smb2_check_receive,
|
|
.add_credits = smb2_add_credits,
|
|
.set_credits = smb2_set_credits,
|
|
.get_credits_field = smb2_get_credits_field,
|
|
.get_credits = smb2_get_credits,
|
|
.wait_mtu_credits = smb2_wait_mtu_credits,
|
|
.get_next_mid = smb2_get_next_mid,
|
|
.read_data_offset = smb2_read_data_offset,
|
|
.read_data_length = smb2_read_data_length,
|
|
.map_error = map_smb2_to_linux_error,
|
|
.find_mid = smb2_find_mid,
|
|
.check_message = smb2_check_message,
|
|
.dump_detail = smb2_dump_detail,
|
|
.clear_stats = smb2_clear_stats,
|
|
.print_stats = smb2_print_stats,
|
|
.is_oplock_break = smb2_is_valid_oplock_break,
|
|
.handle_cancelled_mid = smb2_handle_cancelled_mid,
|
|
.downgrade_oplock = smb2_downgrade_oplock,
|
|
.need_neg = smb2_need_neg,
|
|
.negotiate = smb2_negotiate,
|
|
.negotiate_wsize = smb2_negotiate_wsize,
|
|
.negotiate_rsize = smb2_negotiate_rsize,
|
|
.sess_setup = SMB2_sess_setup,
|
|
.logoff = SMB2_logoff,
|
|
.tree_connect = SMB2_tcon,
|
|
.tree_disconnect = SMB2_tdis,
|
|
.qfs_tcon = smb2_qfs_tcon,
|
|
.is_path_accessible = smb2_is_path_accessible,
|
|
.can_echo = smb2_can_echo,
|
|
.echo = SMB2_echo,
|
|
.query_path_info = smb2_query_path_info,
|
|
.get_srv_inum = smb2_get_srv_inum,
|
|
.query_file_info = smb2_query_file_info,
|
|
.set_path_size = smb2_set_path_size,
|
|
.set_file_size = smb2_set_file_size,
|
|
.set_file_info = smb2_set_file_info,
|
|
.set_compression = smb2_set_compression,
|
|
.mkdir = smb2_mkdir,
|
|
.mkdir_setinfo = smb2_mkdir_setinfo,
|
|
.rmdir = smb2_rmdir,
|
|
.unlink = smb2_unlink,
|
|
.rename = smb2_rename_path,
|
|
.create_hardlink = smb2_create_hardlink,
|
|
.query_symlink = smb2_query_symlink,
|
|
.query_mf_symlink = smb3_query_mf_symlink,
|
|
.create_mf_symlink = smb3_create_mf_symlink,
|
|
.open = smb2_open_file,
|
|
.set_fid = smb2_set_fid,
|
|
.close = smb2_close_file,
|
|
.flush = smb2_flush_file,
|
|
.async_readv = smb2_async_readv,
|
|
.async_writev = smb2_async_writev,
|
|
.sync_read = smb2_sync_read,
|
|
.sync_write = smb2_sync_write,
|
|
.query_dir_first = smb2_query_dir_first,
|
|
.query_dir_next = smb2_query_dir_next,
|
|
.close_dir = smb2_close_dir,
|
|
.calc_smb_size = smb2_calc_size,
|
|
.is_status_pending = smb2_is_status_pending,
|
|
.is_session_expired = smb2_is_session_expired,
|
|
.oplock_response = smb2_oplock_response,
|
|
.queryfs = smb2_queryfs,
|
|
.mand_lock = smb2_mand_lock,
|
|
.mand_unlock_range = smb2_unlock_range,
|
|
.push_mand_locks = smb2_push_mandatory_locks,
|
|
.get_lease_key = smb2_get_lease_key,
|
|
.set_lease_key = smb2_set_lease_key,
|
|
.new_lease_key = smb2_new_lease_key,
|
|
.calc_signature = smb2_calc_signature,
|
|
.is_read_op = smb21_is_read_op,
|
|
.set_oplock_level = smb21_set_oplock_level,
|
|
.create_lease_buf = smb2_create_lease_buf,
|
|
.parse_lease_buf = smb2_parse_lease_buf,
|
|
.copychunk_range = smb2_copychunk_range,
|
|
.wp_retry_size = smb2_wp_retry_size,
|
|
.dir_needs_close = smb2_dir_needs_close,
|
|
.enum_snapshots = smb3_enum_snapshots,
|
|
.get_dfs_refer = smb2_get_dfs_refer,
|
|
.select_sectype = smb2_select_sectype,
|
|
#ifdef CONFIG_CIFS_ACL
|
|
.get_acl = get_smb2_acl,
|
|
.get_acl_by_fid = get_smb2_acl_by_fid,
|
|
.set_acl = set_smb2_acl,
|
|
#endif /* CIFS_ACL */
|
|
};
|
|
|
|
struct smb_version_operations smb30_operations = {
|
|
.compare_fids = smb2_compare_fids,
|
|
.setup_request = smb2_setup_request,
|
|
.setup_async_request = smb2_setup_async_request,
|
|
.check_receive = smb2_check_receive,
|
|
.add_credits = smb2_add_credits,
|
|
.set_credits = smb2_set_credits,
|
|
.get_credits_field = smb2_get_credits_field,
|
|
.get_credits = smb2_get_credits,
|
|
.wait_mtu_credits = smb2_wait_mtu_credits,
|
|
.get_next_mid = smb2_get_next_mid,
|
|
.read_data_offset = smb2_read_data_offset,
|
|
.read_data_length = smb2_read_data_length,
|
|
.map_error = map_smb2_to_linux_error,
|
|
.find_mid = smb2_find_mid,
|
|
.check_message = smb2_check_message,
|
|
.dump_detail = smb2_dump_detail,
|
|
.clear_stats = smb2_clear_stats,
|
|
.print_stats = smb2_print_stats,
|
|
.dump_share_caps = smb2_dump_share_caps,
|
|
.is_oplock_break = smb2_is_valid_oplock_break,
|
|
.handle_cancelled_mid = smb2_handle_cancelled_mid,
|
|
.downgrade_oplock = smb2_downgrade_oplock,
|
|
.need_neg = smb2_need_neg,
|
|
.negotiate = smb2_negotiate,
|
|
.negotiate_wsize = smb2_negotiate_wsize,
|
|
.negotiate_rsize = smb2_negotiate_rsize,
|
|
.sess_setup = SMB2_sess_setup,
|
|
.logoff = SMB2_logoff,
|
|
.tree_connect = SMB2_tcon,
|
|
.tree_disconnect = SMB2_tdis,
|
|
.qfs_tcon = smb3_qfs_tcon,
|
|
.is_path_accessible = smb2_is_path_accessible,
|
|
.can_echo = smb2_can_echo,
|
|
.echo = SMB2_echo,
|
|
.query_path_info = smb2_query_path_info,
|
|
.get_srv_inum = smb2_get_srv_inum,
|
|
.query_file_info = smb2_query_file_info,
|
|
.set_path_size = smb2_set_path_size,
|
|
.set_file_size = smb2_set_file_size,
|
|
.set_file_info = smb2_set_file_info,
|
|
.set_compression = smb2_set_compression,
|
|
.mkdir = smb2_mkdir,
|
|
.mkdir_setinfo = smb2_mkdir_setinfo,
|
|
.rmdir = smb2_rmdir,
|
|
.unlink = smb2_unlink,
|
|
.rename = smb2_rename_path,
|
|
.create_hardlink = smb2_create_hardlink,
|
|
.query_symlink = smb2_query_symlink,
|
|
.query_mf_symlink = smb3_query_mf_symlink,
|
|
.create_mf_symlink = smb3_create_mf_symlink,
|
|
.open = smb2_open_file,
|
|
.set_fid = smb2_set_fid,
|
|
.close = smb2_close_file,
|
|
.flush = smb2_flush_file,
|
|
.async_readv = smb2_async_readv,
|
|
.async_writev = smb2_async_writev,
|
|
.sync_read = smb2_sync_read,
|
|
.sync_write = smb2_sync_write,
|
|
.query_dir_first = smb2_query_dir_first,
|
|
.query_dir_next = smb2_query_dir_next,
|
|
.close_dir = smb2_close_dir,
|
|
.calc_smb_size = smb2_calc_size,
|
|
.is_status_pending = smb2_is_status_pending,
|
|
.is_session_expired = smb2_is_session_expired,
|
|
.oplock_response = smb2_oplock_response,
|
|
.queryfs = smb2_queryfs,
|
|
.mand_lock = smb2_mand_lock,
|
|
.mand_unlock_range = smb2_unlock_range,
|
|
.push_mand_locks = smb2_push_mandatory_locks,
|
|
.get_lease_key = smb2_get_lease_key,
|
|
.set_lease_key = smb2_set_lease_key,
|
|
.new_lease_key = smb2_new_lease_key,
|
|
.generate_signingkey = generate_smb30signingkey,
|
|
.calc_signature = smb3_calc_signature,
|
|
.set_integrity = smb3_set_integrity,
|
|
.is_read_op = smb21_is_read_op,
|
|
.set_oplock_level = smb3_set_oplock_level,
|
|
.create_lease_buf = smb3_create_lease_buf,
|
|
.parse_lease_buf = smb3_parse_lease_buf,
|
|
.copychunk_range = smb2_copychunk_range,
|
|
.duplicate_extents = smb2_duplicate_extents,
|
|
.validate_negotiate = smb3_validate_negotiate,
|
|
.wp_retry_size = smb2_wp_retry_size,
|
|
.dir_needs_close = smb2_dir_needs_close,
|
|
.fallocate = smb3_fallocate,
|
|
.enum_snapshots = smb3_enum_snapshots,
|
|
.init_transform_rq = smb3_init_transform_rq,
|
|
.free_transform_rq = smb3_free_transform_rq,
|
|
.is_transform_hdr = smb3_is_transform_hdr,
|
|
.receive_transform = smb3_receive_transform,
|
|
.get_dfs_refer = smb2_get_dfs_refer,
|
|
.select_sectype = smb2_select_sectype,
|
|
#ifdef CONFIG_CIFS_ACL
|
|
.get_acl = get_smb2_acl,
|
|
.get_acl_by_fid = get_smb2_acl_by_fid,
|
|
.set_acl = set_smb2_acl,
|
|
#endif /* CIFS_ACL */
|
|
};
|
|
|
|
#ifdef CONFIG_CIFS_SMB311
|
|
struct smb_version_operations smb311_operations = {
|
|
.compare_fids = smb2_compare_fids,
|
|
.setup_request = smb2_setup_request,
|
|
.setup_async_request = smb2_setup_async_request,
|
|
.check_receive = smb2_check_receive,
|
|
.add_credits = smb2_add_credits,
|
|
.set_credits = smb2_set_credits,
|
|
.get_credits_field = smb2_get_credits_field,
|
|
.get_credits = smb2_get_credits,
|
|
.wait_mtu_credits = smb2_wait_mtu_credits,
|
|
.get_next_mid = smb2_get_next_mid,
|
|
.read_data_offset = smb2_read_data_offset,
|
|
.read_data_length = smb2_read_data_length,
|
|
.map_error = map_smb2_to_linux_error,
|
|
.find_mid = smb2_find_mid,
|
|
.check_message = smb2_check_message,
|
|
.dump_detail = smb2_dump_detail,
|
|
.clear_stats = smb2_clear_stats,
|
|
.print_stats = smb2_print_stats,
|
|
.dump_share_caps = smb2_dump_share_caps,
|
|
.is_oplock_break = smb2_is_valid_oplock_break,
|
|
.handle_cancelled_mid = smb2_handle_cancelled_mid,
|
|
.downgrade_oplock = smb2_downgrade_oplock,
|
|
.need_neg = smb2_need_neg,
|
|
.negotiate = smb2_negotiate,
|
|
.negotiate_wsize = smb2_negotiate_wsize,
|
|
.negotiate_rsize = smb2_negotiate_rsize,
|
|
.sess_setup = SMB2_sess_setup,
|
|
.logoff = SMB2_logoff,
|
|
.tree_connect = SMB2_tcon,
|
|
.tree_disconnect = SMB2_tdis,
|
|
.qfs_tcon = smb3_qfs_tcon,
|
|
.is_path_accessible = smb2_is_path_accessible,
|
|
.can_echo = smb2_can_echo,
|
|
.echo = SMB2_echo,
|
|
.query_path_info = smb2_query_path_info,
|
|
.get_srv_inum = smb2_get_srv_inum,
|
|
.query_file_info = smb2_query_file_info,
|
|
.set_path_size = smb2_set_path_size,
|
|
.set_file_size = smb2_set_file_size,
|
|
.set_file_info = smb2_set_file_info,
|
|
.set_compression = smb2_set_compression,
|
|
.mkdir = smb2_mkdir,
|
|
.mkdir_setinfo = smb2_mkdir_setinfo,
|
|
.rmdir = smb2_rmdir,
|
|
.unlink = smb2_unlink,
|
|
.rename = smb2_rename_path,
|
|
.create_hardlink = smb2_create_hardlink,
|
|
.query_symlink = smb2_query_symlink,
|
|
.query_mf_symlink = smb3_query_mf_symlink,
|
|
.create_mf_symlink = smb3_create_mf_symlink,
|
|
.open = smb2_open_file,
|
|
.set_fid = smb2_set_fid,
|
|
.close = smb2_close_file,
|
|
.flush = smb2_flush_file,
|
|
.async_readv = smb2_async_readv,
|
|
.async_writev = smb2_async_writev,
|
|
.sync_read = smb2_sync_read,
|
|
.sync_write = smb2_sync_write,
|
|
.query_dir_first = smb2_query_dir_first,
|
|
.query_dir_next = smb2_query_dir_next,
|
|
.close_dir = smb2_close_dir,
|
|
.calc_smb_size = smb2_calc_size,
|
|
.is_status_pending = smb2_is_status_pending,
|
|
.is_session_expired = smb2_is_session_expired,
|
|
.oplock_response = smb2_oplock_response,
|
|
.queryfs = smb2_queryfs,
|
|
.mand_lock = smb2_mand_lock,
|
|
.mand_unlock_range = smb2_unlock_range,
|
|
.push_mand_locks = smb2_push_mandatory_locks,
|
|
.get_lease_key = smb2_get_lease_key,
|
|
.set_lease_key = smb2_set_lease_key,
|
|
.new_lease_key = smb2_new_lease_key,
|
|
.generate_signingkey = generate_smb311signingkey,
|
|
.calc_signature = smb3_calc_signature,
|
|
.set_integrity = smb3_set_integrity,
|
|
.is_read_op = smb21_is_read_op,
|
|
.set_oplock_level = smb3_set_oplock_level,
|
|
.create_lease_buf = smb3_create_lease_buf,
|
|
.parse_lease_buf = smb3_parse_lease_buf,
|
|
.copychunk_range = smb2_copychunk_range,
|
|
.duplicate_extents = smb2_duplicate_extents,
|
|
/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
|
|
.wp_retry_size = smb2_wp_retry_size,
|
|
.dir_needs_close = smb2_dir_needs_close,
|
|
.fallocate = smb3_fallocate,
|
|
.enum_snapshots = smb3_enum_snapshots,
|
|
.init_transform_rq = smb3_init_transform_rq,
|
|
.free_transform_rq = smb3_free_transform_rq,
|
|
.is_transform_hdr = smb3_is_transform_hdr,
|
|
.receive_transform = smb3_receive_transform,
|
|
.get_dfs_refer = smb2_get_dfs_refer,
|
|
.select_sectype = smb2_select_sectype,
|
|
};
|
|
#endif /* CIFS_SMB311 */
|
|
|
|
struct smb_version_values smb20_values = {
|
|
.version_string = SMB20_VERSION_STRING,
|
|
.protocol_id = SMB20_PROT_ID,
|
|
.req_capabilities = 0, /* MBZ */
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_hdr),
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease),
|
|
};
|
|
|
|
struct smb_version_values smb21_values = {
|
|
.version_string = SMB21_VERSION_STRING,
|
|
.protocol_id = SMB21_PROT_ID,
|
|
.req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_hdr),
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease),
|
|
};
|
|
|
|
struct smb_version_values smb30_values = {
|
|
.version_string = SMB30_VERSION_STRING,
|
|
.protocol_id = SMB30_PROT_ID,
|
|
.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_hdr),
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease_v2),
|
|
};
|
|
|
|
struct smb_version_values smb302_values = {
|
|
.version_string = SMB302_VERSION_STRING,
|
|
.protocol_id = SMB302_PROT_ID,
|
|
.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_hdr),
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease_v2),
|
|
};
|
|
|
|
#ifdef CONFIG_CIFS_SMB311
|
|
struct smb_version_values smb311_values = {
|
|
.version_string = SMB311_VERSION_STRING,
|
|
.protocol_id = SMB311_PROT_ID,
|
|
.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
|
|
.large_lock_type = 0,
|
|
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
|
|
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
|
|
.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
|
|
.header_size = sizeof(struct smb2_hdr),
|
|
.max_header_size = MAX_SMB2_HDR_SIZE,
|
|
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
|
|
.lock_cmd = SMB2_LOCK,
|
|
.cap_unix = 0,
|
|
.cap_nt_find = SMB2_NT_FIND,
|
|
.cap_large_files = SMB2_LARGE_FILES,
|
|
.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
|
|
.create_lease_size = sizeof(struct create_lease_v2),
|
|
};
|
|
#endif /* SMB311 */
|