[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/fs/cifs/smb2ops.c b/src/kernel/linux/v4.19/fs/cifs/smb2ops.c
new file mode 100644
index 0000000..6fc1632
--- /dev/null
+++ b/src/kernel/linux/v4.19/fs/cifs/smb2ops.c
@@ -0,0 +1,3870 @@
+/*
+ * SMB2 version specific operations
+ *
+ * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License v2 as published
+ * by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/pagemap.h>
+#include <linux/vfs.h>
+#include <linux/falloc.h>
+#include <linux/scatterlist.h>
+#include <linux/uuid.h>
+#include <crypto/aead.h>
+#include "cifsglob.h"
+#include "smb2pdu.h"
+#include "smb2proto.h"
+#include "cifsproto.h"
+#include "cifs_debug.h"
+#include "cifs_unicode.h"
+#include "smb2status.h"
+#include "smb2glob.h"
+#include "cifs_ioctl.h"
+#include "smbdirect.h"
+
+/* Change credits for different ops and return the total number of credits */
+static int
+change_conf(struct TCP_Server_Info *server)
+{
+ server->credits += server->echo_credits + server->oplock_credits;
+ server->oplock_credits = server->echo_credits = 0;
+ switch (server->credits) {
+ case 0:
+ return 0;
+ case 1:
+ server->echoes = false;
+ server->oplocks = false;
+ break;
+ case 2:
+ server->echoes = true;
+ server->oplocks = false;
+ server->echo_credits = 1;
+ break;
+ default:
+ server->echoes = true;
+ if (enable_oplocks) {
+ server->oplocks = true;
+ server->oplock_credits = 1;
+ } else
+ server->oplocks = false;
+
+ server->echo_credits = 1;
+ }
+ server->credits -= server->echo_credits + server->oplock_credits;
+ return server->credits + server->echo_credits + server->oplock_credits;
+}
+
+static void
+smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
+ const int optype)
+{
+ int *val, rc = -1;
+
+ spin_lock(&server->req_lock);
+ val = server->ops->get_credits_field(server, optype);
+ *val += add;
+ if (*val > 65000) {
+ *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
+ printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
+ }
+ server->in_flight--;
+ if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
+ rc = change_conf(server);
+ /*
+ * Sometimes server returns 0 credits on oplock break ack - we need to
+ * rebalance credits in this case.
+ */
+ else if (server->in_flight > 0 && server->oplock_credits == 0 &&
+ server->oplocks) {
+ if (server->credits > 1) {
+ server->credits--;
+ server->oplock_credits++;
+ }
+ }
+ spin_unlock(&server->req_lock);
+ wake_up(&server->request_q);
+
+ if (server->tcpStatus == CifsNeedReconnect)
+ return;
+
+ switch (rc) {
+ case -1:
+ /* change_conf hasn't been executed */
+ break;
+ case 0:
+ cifs_dbg(VFS, "Possible client or server bug - zero credits\n");
+ break;
+ case 1:
+ cifs_dbg(VFS, "disabling echoes and oplocks\n");
+ break;
+ case 2:
+ cifs_dbg(FYI, "disabling oplocks\n");
+ break;
+ default:
+ cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
+ }
+}
+
+static void
+smb2_set_credits(struct TCP_Server_Info *server, const int val)
+{
+ spin_lock(&server->req_lock);
+ server->credits = val;
+ spin_unlock(&server->req_lock);
+}
+
+static int *
+smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
+{
+ switch (optype) {
+ case CIFS_ECHO_OP:
+ return &server->echo_credits;
+ case CIFS_OBREAK_OP:
+ return &server->oplock_credits;
+ default:
+ return &server->credits;
+ }
+}
+
+static unsigned int
+smb2_get_credits(struct mid_q_entry *mid)
+{
+ struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
+
+ return le16_to_cpu(shdr->CreditRequest);
+}
+
+static int
+smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
+ unsigned int *num, unsigned int *credits)
+{
+ int rc = 0;
+ unsigned int scredits;
+
+ spin_lock(&server->req_lock);
+ while (1) {
+ if (server->credits <= 0) {
+ spin_unlock(&server->req_lock);
+ cifs_num_waiters_inc(server);
+ rc = wait_event_killable(server->request_q,
+ has_credits(server, &server->credits));
+ cifs_num_waiters_dec(server);
+ if (rc)
+ return rc;
+ spin_lock(&server->req_lock);
+ } else {
+ if (server->tcpStatus == CifsExiting) {
+ spin_unlock(&server->req_lock);
+ return -ENOENT;
+ }
+
+ scredits = server->credits;
+ /* can deadlock with reopen */
+ if (scredits <= 8) {
+ *num = SMB2_MAX_BUFFER_SIZE;
+ *credits = 0;
+ break;
+ }
+
+ /* leave some credits for reopen and other ops */
+ scredits -= 8;
+ *num = min_t(unsigned int, size,
+ scredits * SMB2_MAX_BUFFER_SIZE);
+
+ *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
+ server->credits -= *credits;
+ server->in_flight++;
+ break;
+ }
+ }
+ spin_unlock(&server->req_lock);
+ return rc;
+}
+
+static __u64
+smb2_get_next_mid(struct TCP_Server_Info *server)
+{
+ __u64 mid;
+ /* for SMB2 we need the current value */
+ spin_lock(&GlobalMid_Lock);
+ mid = server->CurrentMid++;
+ spin_unlock(&GlobalMid_Lock);
+ return mid;
+}
+
+static void
+smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
+{
+ spin_lock(&GlobalMid_Lock);
+ if (server->CurrentMid >= val)
+ server->CurrentMid -= val;
+ spin_unlock(&GlobalMid_Lock);
+}
+
+static struct mid_q_entry *
+smb2_find_mid(struct TCP_Server_Info *server, char *buf)
+{
+ struct mid_q_entry *mid;
+ struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
+ __u64 wire_mid = le64_to_cpu(shdr->MessageId);
+
+ if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
+ cifs_dbg(VFS, "encrypted frame parsing not supported yet");
+ return NULL;
+ }
+
+ spin_lock(&GlobalMid_Lock);
+ list_for_each_entry(mid, &server->pending_mid_q, qhead) {
+ if ((mid->mid == wire_mid) &&
+ (mid->mid_state == MID_REQUEST_SUBMITTED) &&
+ (mid->command == shdr->Command)) {
+ kref_get(&mid->refcount);
+ spin_unlock(&GlobalMid_Lock);
+ return mid;
+ }
+ }
+ spin_unlock(&GlobalMid_Lock);
+ return NULL;
+}
+
+static void
+smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
+{
+#ifdef CONFIG_CIFS_DEBUG2
+ struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
+
+ cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
+ shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
+ shdr->ProcessId);
+ cifs_dbg(VFS, "smb buf %p len %u\n", buf,
+ server->ops->calc_smb_size(buf, server));
+#endif
+}
+
+static bool
+smb2_need_neg(struct TCP_Server_Info *server)
+{
+ return server->max_read == 0;
+}
+
+static int
+smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
+{
+ int rc;
+ ses->server->CurrentMid = 0;
+ rc = SMB2_negotiate(xid, ses);
+ /* BB we probably don't need to retry with modern servers */
+ if (rc == -EAGAIN)
+ rc = -EHOSTDOWN;
+ return rc;
+}
+
+static unsigned int
+smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
+{
+ struct TCP_Server_Info *server = tcon->ses->server;
+ unsigned int wsize;
+
+ /* start with specified wsize, or default */
+ wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
+ wsize = min_t(unsigned int, wsize, server->max_write);
+#ifdef CONFIG_CIFS_SMB_DIRECT
+ if (server->rdma) {
+ if (server->sign)
+ wsize = min_t(unsigned int,
+ wsize, server->smbd_conn->max_fragmented_send_size);
+ else
+ wsize = min_t(unsigned int,
+ wsize, server->smbd_conn->max_readwrite_size);
+ }
+#endif
+ if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
+ wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
+
+ return wsize;
+}
+
+static unsigned int
+smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
+{
+ struct TCP_Server_Info *server = tcon->ses->server;
+ unsigned int rsize;
+
+ /* start with specified rsize, or default */
+ rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
+ rsize = min_t(unsigned int, rsize, server->max_read);
+#ifdef CONFIG_CIFS_SMB_DIRECT
+ if (server->rdma) {
+ if (server->sign)
+ rsize = min_t(unsigned int,
+ rsize, server->smbd_conn->max_fragmented_recv_size);
+ else
+ rsize = min_t(unsigned int,
+ rsize, server->smbd_conn->max_readwrite_size);
+ }
+#endif
+
+ if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
+ rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
+
+ return rsize;
+}
+
+
+static int
+parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
+ size_t buf_len,
+ struct cifs_server_iface **iface_list,
+ size_t *iface_count)
+{
+ struct network_interface_info_ioctl_rsp *p;
+ struct sockaddr_in *addr4;
+ struct sockaddr_in6 *addr6;
+ struct iface_info_ipv4 *p4;
+ struct iface_info_ipv6 *p6;
+ struct cifs_server_iface *info;
+ ssize_t bytes_left;
+ size_t next = 0;
+ int nb_iface = 0;
+ int rc = 0;
+
+ *iface_list = NULL;
+ *iface_count = 0;
+
+ /*
+ * Fist pass: count and sanity check
+ */
+
+ bytes_left = buf_len;
+ p = buf;
+ while (bytes_left >= sizeof(*p)) {
+ nb_iface++;
+ next = le32_to_cpu(p->Next);
+ if (!next) {
+ bytes_left -= sizeof(*p);
+ break;
+ }
+ p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
+ bytes_left -= next;
+ }
+
+ if (!nb_iface) {
+ cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ if (bytes_left || p->Next)
+ cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
+
+
+ /*
+ * Second pass: extract info to internal structure
+ */
+
+ *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
+ if (!*iface_list) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ info = *iface_list;
+ bytes_left = buf_len;
+ p = buf;
+ while (bytes_left >= sizeof(*p)) {
+ info->speed = le64_to_cpu(p->LinkSpeed);
+ info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
+ info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
+
+ cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
+ cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
+ cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
+ le32_to_cpu(p->Capability));
+
+ switch (p->Family) {
+ /*
+ * The kernel and wire socket structures have the same
+ * layout and use network byte order but make the
+ * conversion explicit in case either one changes.
+ */
+ case INTERNETWORK:
+ addr4 = (struct sockaddr_in *)&info->sockaddr;
+ p4 = (struct iface_info_ipv4 *)p->Buffer;
+ addr4->sin_family = AF_INET;
+ memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
+
+ /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
+ addr4->sin_port = cpu_to_be16(CIFS_PORT);
+
+ cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
+ &addr4->sin_addr);
+ break;
+ case INTERNETWORKV6:
+ addr6 = (struct sockaddr_in6 *)&info->sockaddr;
+ p6 = (struct iface_info_ipv6 *)p->Buffer;
+ addr6->sin6_family = AF_INET6;
+ memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
+
+ /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
+ addr6->sin6_flowinfo = 0;
+ addr6->sin6_scope_id = 0;
+ addr6->sin6_port = cpu_to_be16(CIFS_PORT);
+
+ cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
+ &addr6->sin6_addr);
+ break;
+ default:
+ cifs_dbg(VFS,
+ "%s: skipping unsupported socket family\n",
+ __func__);
+ goto next_iface;
+ }
+
+ (*iface_count)++;
+ info++;
+next_iface:
+ next = le32_to_cpu(p->Next);
+ if (!next)
+ break;
+ p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
+ bytes_left -= next;
+ }
+
+ if (!*iface_count) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+out:
+ if (rc) {
+ kfree(*iface_list);
+ *iface_count = 0;
+ *iface_list = NULL;
+ }
+ return rc;
+}
+
+
+static int
+SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
+{
+ int rc;
+ unsigned int ret_data_len = 0;
+ struct network_interface_info_ioctl_rsp *out_buf = NULL;
+ struct cifs_server_iface *iface_list;
+ size_t iface_count;
+ struct cifs_ses *ses = tcon->ses;
+
+ rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
+ FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
+ NULL /* no data input */, 0 /* no data input */,
+ (char **)&out_buf, &ret_data_len);
+ if (rc == -EOPNOTSUPP) {
+ cifs_dbg(FYI,
+ "server does not support query network interfaces\n");
+ goto out;
+ } else if (rc != 0) {
+ cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
+ goto out;
+ }
+
+ rc = parse_server_interfaces(out_buf, ret_data_len,
+ &iface_list, &iface_count);
+ if (rc)
+ goto out;
+
+ spin_lock(&ses->iface_lock);
+ kfree(ses->iface_list);
+ ses->iface_list = iface_list;
+ ses->iface_count = iface_count;
+ ses->iface_last_update = jiffies;
+ spin_unlock(&ses->iface_lock);
+
+out:
+ kfree(out_buf);
+ return rc;
+}
+
+static void
+smb2_close_cached_fid(struct kref *ref)
+{
+ struct cached_fid *cfid = container_of(ref, struct cached_fid,
+ refcount);
+
+ if (cfid->is_valid) {
+ cifs_dbg(FYI, "clear cached root file handle\n");
+ SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
+ cfid->fid->volatile_fid);
+ cfid->is_valid = false;
+ }
+}
+
+void close_shroot(struct cached_fid *cfid)
+{
+ mutex_lock(&cfid->fid_mutex);
+ kref_put(&cfid->refcount, smb2_close_cached_fid);
+ mutex_unlock(&cfid->fid_mutex);
+}
+
+void
+smb2_cached_lease_break(struct work_struct *work)
+{
+ struct cached_fid *cfid = container_of(work,
+ struct cached_fid, lease_break);
+
+ close_shroot(cfid);
+}
+
+/*
+ * Open the directory at the root of a share
+ */
+int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
+{
+ struct cifs_open_parms oparams;
+ int rc;
+ __le16 srch_path = 0; /* Null - since an open of top of share */
+ u8 oplock = SMB2_OPLOCK_LEVEL_II;
+
+ mutex_lock(&tcon->crfid.fid_mutex);
+ if (tcon->crfid.is_valid) {
+ cifs_dbg(FYI, "found a cached root file handle\n");
+ memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
+ kref_get(&tcon->crfid.refcount);
+ mutex_unlock(&tcon->crfid.fid_mutex);
+ return 0;
+ }
+
+ oparams.tcon = tcon;
+ oparams.create_options = 0;
+ oparams.desired_access = FILE_READ_ATTRIBUTES;
+ oparams.disposition = FILE_OPEN;
+ oparams.fid = pfid;
+ oparams.reconnect = false;
+
+ /*
+ * We do not hold the lock for the open because in case
+ * SMB2_open needs to reconnect, it will end up calling
+ * cifs_mark_open_files_invalid() which takes the lock again
+ * thus causing a deadlock
+ */
+ mutex_unlock(&tcon->crfid.fid_mutex);
+ rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL, NULL);
+ mutex_lock(&tcon->crfid.fid_mutex);
+
+ /*
+ * Now we need to check again as the cached root might have
+ * been successfully re-opened from a concurrent process
+ */
+
+ if (tcon->crfid.is_valid) {
+ /* work was already done */
+
+ /* stash fids for close() later */
+ struct cifs_fid fid = {
+ .persistent_fid = pfid->persistent_fid,
+ .volatile_fid = pfid->volatile_fid,
+ };
+
+ /*
+ * Caller expects this func to set pfid to a valid
+ * cached root, so we copy the existing one and get a
+ * reference
+ */
+ memcpy(pfid, tcon->crfid.fid, sizeof(*pfid));
+ kref_get(&tcon->crfid.refcount);
+
+ mutex_unlock(&tcon->crfid.fid_mutex);
+
+ if (rc == 0) {
+ /* close extra handle outside of critical section */
+ SMB2_close(xid, tcon, fid.persistent_fid,
+ fid.volatile_fid);
+ }
+ return 0;
+ }
+
+ /* Cached root is still invalid, continue normaly */
+
+ if (rc == 0) {
+ memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
+ tcon->crfid.tcon = tcon;
+ tcon->crfid.is_valid = true;
+ kref_init(&tcon->crfid.refcount);
+ kref_get(&tcon->crfid.refcount);
+ }
+
+ mutex_unlock(&tcon->crfid.fid_mutex);
+ return rc;
+}
+
+static void
+smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
+{
+ 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;
+ bool no_cached_open = tcon->nohandlecache;
+
+ oparms.tcon = tcon;
+ oparms.desired_access = FILE_READ_ATTRIBUTES;
+ oparms.disposition = FILE_OPEN;
+ oparms.create_options = 0;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ if (no_cached_open)
+ rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
+ NULL);
+ else
+ rc = open_shroot(xid, tcon, &fid);
+
+ if (rc)
+ return;
+
+ SMB3_request_interfaces(xid, tcon);
+
+ SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ FS_ATTRIBUTE_INFORMATION);
+ SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ FS_DEVICE_INFORMATION);
+ SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ FS_VOLUME_INFORMATION);
+ SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
+ if (no_cached_open)
+ SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+ else
+ close_shroot(&tcon->crfid);
+
+ return;
+}
+
+static void
+smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
+{
+ 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, NULL);
+ if (rc)
+ return;
+
+ SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ FS_ATTRIBUTE_INFORMATION);
+ SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ FS_DEVICE_INFORMATION);
+ SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+ return;
+}
+
+static int
+smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path)
+{
+ int rc;
+ __le16 *utf16_path;
+ __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ struct cifs_open_parms oparms;
+ struct cifs_fid fid;
+
+ if ((*full_path == 0) && tcon->crfid.is_valid)
+ return 0;
+
+ 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;
+ if (backup_cred(cifs_sb))
+ oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
+ else
+ oparms.create_options = 0;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ if (rc) {
+ kfree(utf16_path);
+ return rc;
+ }
+
+ rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+ kfree(utf16_path);
+ return rc;
+}
+
+static int
+smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path,
+ u64 *uniqueid, FILE_ALL_INFO *data)
+{
+ *uniqueid = le64_to_cpu(data->IndexNumber);
+ return 0;
+}
+
+static int
+smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_fid *fid, FILE_ALL_INFO *data)
+{
+ int rc;
+ struct smb2_file_all_info *smb2_data;
+
+ smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
+ GFP_KERNEL);
+ if (smb2_data == NULL)
+ return -ENOMEM;
+
+ rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
+ smb2_data);
+ if (!rc)
+ move_smb2_info_to_cifs(data, smb2_data);
+ kfree(smb2_data);
+ return rc;
+}
+
+#ifdef CONFIG_CIFS_XATTR
+static ssize_t
+move_smb2_ea_to_cifs(char *dst, size_t dst_size,
+ struct smb2_file_full_ea_info *src, size_t src_size,
+ const unsigned char *ea_name)
+{
+ int rc = 0;
+ unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
+ char *name, *value;
+ size_t buf_size = dst_size;
+ size_t name_len, value_len, user_name_len;
+
+ while (src_size > 0) {
+ name = &src->ea_data[0];
+ name_len = (size_t)src->ea_name_length;
+ value = &src->ea_data[src->ea_name_length + 1];
+ value_len = (size_t)le16_to_cpu(src->ea_value_length);
+
+ if (name_len == 0) {
+ break;
+ }
+
+ if (src_size < 8 + name_len + 1 + value_len) {
+ cifs_dbg(FYI, "EA entry goes beyond length of list\n");
+ rc = -EIO;
+ goto out;
+ }
+
+ if (ea_name) {
+ if (ea_name_len == name_len &&
+ memcmp(ea_name, name, name_len) == 0) {
+ rc = value_len;
+ if (dst_size == 0)
+ goto out;
+ if (dst_size < value_len) {
+ rc = -ERANGE;
+ goto out;
+ }
+ memcpy(dst, value, value_len);
+ goto out;
+ }
+ } else {
+ /* 'user.' plus a terminating null */
+ user_name_len = 5 + 1 + name_len;
+
+ if (buf_size == 0) {
+ /* skip copy - calc size only */
+ rc += user_name_len;
+ } else if (dst_size >= user_name_len) {
+ dst_size -= user_name_len;
+ memcpy(dst, "user.", 5);
+ dst += 5;
+ memcpy(dst, src->ea_data, name_len);
+ dst += name_len;
+ *dst = 0;
+ ++dst;
+ rc += user_name_len;
+ } else {
+ /* stop before overrun buffer */
+ rc = -ERANGE;
+ break;
+ }
+ }
+
+ if (!src->next_entry_offset)
+ break;
+
+ if (src_size < le32_to_cpu(src->next_entry_offset)) {
+ /* stop before overrun buffer */
+ rc = -ERANGE;
+ break;
+ }
+ src_size -= le32_to_cpu(src->next_entry_offset);
+ src = (void *)((char *)src +
+ le32_to_cpu(src->next_entry_offset));
+ }
+
+ /* didn't find the named attribute */
+ if (ea_name)
+ rc = -ENODATA;
+
+out:
+ return (ssize_t)rc;
+}
+
+static ssize_t
+smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
+ const unsigned char *path, const unsigned char *ea_name,
+ char *ea_data, size_t buf_size,
+ 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_file_full_ea_info *smb2_data;
+ int ea_buf_size = SMB2_MIN_EA_BUF;
+
+ utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
+ if (!utf16_path)
+ return -ENOMEM;
+
+ oparms.tcon = tcon;
+ oparms.desired_access = FILE_READ_EA;
+ oparms.disposition = FILE_OPEN;
+ if (backup_cred(cifs_sb))
+ oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
+ else
+ oparms.create_options = 0;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ kfree(utf16_path);
+ if (rc) {
+ cifs_dbg(FYI, "open failed rc=%d\n", rc);
+ return rc;
+ }
+
+ while (1) {
+ smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
+ if (smb2_data == NULL) {
+ SMB2_close(xid, tcon, fid.persistent_fid,
+ fid.volatile_fid);
+ return -ENOMEM;
+ }
+
+ rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
+ fid.volatile_fid,
+ ea_buf_size, smb2_data);
+
+ if (rc != -E2BIG)
+ break;
+
+ kfree(smb2_data);
+ ea_buf_size <<= 1;
+
+ if (ea_buf_size > SMB2_MAX_EA_BUF) {
+ cifs_dbg(VFS, "EA size is too large\n");
+ SMB2_close(xid, tcon, fid.persistent_fid,
+ fid.volatile_fid);
+ return -ENOMEM;
+ }
+ }
+
+ SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+
+ /*
+ * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
+ * not an error. Otherwise, the specified ea_name was not found.
+ */
+ if (!rc)
+ rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
+ SMB2_MAX_EA_BUF, ea_name);
+ else if (!ea_name && rc == -ENODATA)
+ rc = 0;
+
+ kfree(smb2_data);
+ return rc;
+}
+
+
+static int
+smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
+ const char *path, const char *ea_name, const void *ea_value,
+ const __u16 ea_value_len, const struct nls_table *nls_codepage,
+ 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_file_full_ea_info *ea;
+ int ea_name_len = strlen(ea_name);
+ int len;
+
+ if (ea_name_len > 255)
+ return -EINVAL;
+
+ utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
+ if (!utf16_path)
+ return -ENOMEM;
+
+ oparms.tcon = tcon;
+ oparms.desired_access = FILE_WRITE_EA;
+ oparms.disposition = FILE_OPEN;
+ if (backup_cred(cifs_sb))
+ oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
+ else
+ oparms.create_options = 0;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ kfree(utf16_path);
+ if (rc) {
+ cifs_dbg(FYI, "open failed rc=%d\n", rc);
+ return rc;
+ }
+
+ len = sizeof(ea) + ea_name_len + ea_value_len + 1;
+ ea = kzalloc(len, GFP_KERNEL);
+ if (ea == NULL) {
+ SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+ return -ENOMEM;
+ }
+
+ ea->ea_name_length = ea_name_len;
+ ea->ea_value_length = cpu_to_le16(ea_value_len);
+ memcpy(ea->ea_data, ea_name, ea_name_len + 1);
+ memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
+
+ rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
+ len);
+ kfree(ea);
+
+ SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+
+ return rc;
+}
+#endif
+
+static bool
+smb2_can_echo(struct TCP_Server_Info *server)
+{
+ return server->echoes;
+}
+
+static void
+smb2_clear_stats(struct cifs_tcon *tcon)
+{
+ int i;
+ for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
+ atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
+ atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
+ }
+}
+
+static void
+smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
+{
+ seq_puts(m, "\n\tShare Capabilities:");
+ if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
+ seq_puts(m, " DFS,");
+ if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
+ seq_puts(m, " CONTINUOUS AVAILABILITY,");
+ if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
+ seq_puts(m, " SCALEOUT,");
+ if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
+ seq_puts(m, " CLUSTER,");
+ if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
+ seq_puts(m, " ASYMMETRIC,");
+ if (tcon->capabilities == 0)
+ seq_puts(m, " None");
+ if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
+ seq_puts(m, " Aligned,");
+ if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
+ seq_puts(m, " Partition Aligned,");
+ if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
+ seq_puts(m, " SSD,");
+ if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
+ seq_puts(m, " TRIM-support,");
+
+ seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
+ seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
+ if (tcon->perf_sector_size)
+ seq_printf(m, "\tOptimal sector size: 0x%x",
+ tcon->perf_sector_size);
+ seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
+}
+
+static void
+smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
+{
+ atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
+ atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
+
+ /*
+ * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
+ * totals (requests sent) since those SMBs are per-session not per tcon
+ */
+ seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
+ (long long)(tcon->bytes_read),
+ (long long)(tcon->bytes_written));
+ seq_printf(m, "\nTreeConnects: %d total %d failed",
+ atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
+ atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
+ seq_printf(m, "\nTreeDisconnects: %d total %d failed",
+ atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
+ atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
+ seq_printf(m, "\nCreates: %d total %d failed",
+ atomic_read(&sent[SMB2_CREATE_HE]),
+ atomic_read(&failed[SMB2_CREATE_HE]));
+ seq_printf(m, "\nCloses: %d total %d failed",
+ atomic_read(&sent[SMB2_CLOSE_HE]),
+ atomic_read(&failed[SMB2_CLOSE_HE]));
+ seq_printf(m, "\nFlushes: %d total %d failed",
+ atomic_read(&sent[SMB2_FLUSH_HE]),
+ atomic_read(&failed[SMB2_FLUSH_HE]));
+ seq_printf(m, "\nReads: %d total %d failed",
+ atomic_read(&sent[SMB2_READ_HE]),
+ atomic_read(&failed[SMB2_READ_HE]));
+ seq_printf(m, "\nWrites: %d total %d failed",
+ atomic_read(&sent[SMB2_WRITE_HE]),
+ atomic_read(&failed[SMB2_WRITE_HE]));
+ seq_printf(m, "\nLocks: %d total %d failed",
+ atomic_read(&sent[SMB2_LOCK_HE]),
+ atomic_read(&failed[SMB2_LOCK_HE]));
+ seq_printf(m, "\nIOCTLs: %d total %d failed",
+ atomic_read(&sent[SMB2_IOCTL_HE]),
+ atomic_read(&failed[SMB2_IOCTL_HE]));
+ seq_printf(m, "\nQueryDirectories: %d total %d failed",
+ atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
+ atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
+ seq_printf(m, "\nChangeNotifies: %d total %d failed",
+ atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
+ atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
+ seq_printf(m, "\nQueryInfos: %d total %d failed",
+ atomic_read(&sent[SMB2_QUERY_INFO_HE]),
+ atomic_read(&failed[SMB2_QUERY_INFO_HE]));
+ seq_printf(m, "\nSetInfos: %d total %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]));
+}
+
+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 */,
+ 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 */, (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, bool in_remaining)
+{
+ struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
+
+ if (in_remaining)
+ return le32_to_cpu(rsp->DataRemaining);
+
+ 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 */,
+ &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 */,
+ (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 */,
+ (char *)&integr_info,
+ sizeof(struct fsctl_set_integrity_information_req),
+ NULL,
+ &ret_data_len);
+
+}
+
+/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
+#define GMT_TOKEN_SIZE 50
+
+/*
+ * Input buffer contains (empty) struct smb_snapshot array with size filled in
+ * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
+ */
+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 */,
+ 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;
+ }
+
+ /*
+ * Check for min size, ie not large enough to fit even one GMT
+ * token (snapshot). On the first ioctl some users may pass in
+ * smaller size (or zero) to simply get the size of the array
+ * so the user space caller can allocate sufficient memory
+ * and retry the ioctl again with larger array size sufficient
+ * to hold all of the snapshot GMT tokens on the second try.
+ */
+ if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
+ ret_data_len = sizeof(struct smb_snapshot_array);
+
+ /*
+ * We return struct SRV_SNAPSHOT_ARRAY, followed by
+ * the snapshot array (of 50 byte GMT tokens) each
+ * representing an available previous version of the data
+ */
+ if (ret_data_len > (snapshot_in.snapshot_array_size +
+ sizeof(struct smb_snapshot_array)))
+ ret_data_len = snapshot_in.snapshot_array_size +
+ sizeof(struct smb_snapshot_array);
+
+ 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;
+ if (backup_cred(cifs_sb))
+ oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
+ else
+ oparms.create_options = 0;
+ oparms.fid = fid;
+ oparms.reconnect = false;
+
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, 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 = 2;
+
+ 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 = (struct smb2_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 = (struct smb2_sync_hdr *)buf;
+
+ if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
+ shdr->Status != STATUS_USER_SESSION_DELETED)
+ return false;
+
+ trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
+ le16_to_cpu(shdr->Command),
+ le64_to_cpu(shdr->MessageId));
+ cifs_dbg(FYI, "Session expired or deleted\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 void
+smb2_set_related(struct smb_rqst *rqst)
+{
+ struct smb2_sync_hdr *shdr;
+
+ shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
+ shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
+}
+
+char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
+
+static void
+smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst)
+{
+ struct smb2_sync_hdr *shdr;
+ unsigned long len = smb_rqst_len(server, rqst);
+
+ /* SMB headers in a compound are 8 byte aligned. */
+ if (len & 7) {
+ rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
+ rqst->rq_iov[rqst->rq_nvec].iov_len = 8 - (len & 7);
+ rqst->rq_nvec++;
+ len = smb_rqst_len(server, rqst);
+ }
+
+ shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
+ shdr->NextCommand = cpu_to_le32(len);
+}
+
+static int
+smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
+ struct kstatfs *buf)
+{
+ struct smb2_query_info_rsp *rsp;
+ struct smb2_fs_full_size_info *info = NULL;
+ struct smb_rqst rqst[3];
+ int resp_buftype[3];
+ struct kvec rsp_iov[3];
+ struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
+ struct kvec qi_iov[1];
+ struct kvec close_iov[1];
+ struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = ses->server;
+ __le16 srch_path = 0; /* Null - open root of share */
+ u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ struct cifs_open_parms oparms;
+ struct cifs_fid fid;
+ int flags = 0;
+ int rc;
+
+ if (smb3_encryption_required(tcon))
+ flags |= CIFS_TRANSFORM_REQ;
+
+ memset(rqst, 0, sizeof(rqst));
+ memset(resp_buftype, 0, sizeof(resp_buftype));
+ memset(rsp_iov, 0, sizeof(rsp_iov));
+
+ memset(&open_iov, 0, sizeof(open_iov));
+ rqst[0].rq_iov = open_iov;
+ rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
+
+ 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_init(tcon, &rqst[0], &oplock, &oparms, &srch_path);
+ if (rc)
+ goto qfs_exit;
+ smb2_set_next_command(server, &rqst[0]);
+
+ memset(&qi_iov, 0, sizeof(qi_iov));
+ rqst[1].rq_iov = qi_iov;
+ rqst[1].rq_nvec = 1;
+
+ rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
+ FS_FULL_SIZE_INFORMATION,
+ SMB2_O_INFO_FILESYSTEM, 0,
+ sizeof(struct smb2_fs_full_size_info));
+ if (rc)
+ goto qfs_exit;
+ smb2_set_next_command(server, &rqst[1]);
+ smb2_set_related(&rqst[1]);
+
+ memset(&close_iov, 0, sizeof(close_iov));
+ rqst[2].rq_iov = close_iov;
+ rqst[2].rq_nvec = 1;
+
+ rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
+ if (rc)
+ goto qfs_exit;
+ smb2_set_related(&rqst[2]);
+
+ rc = compound_send_recv(xid, ses, flags, 3, rqst,
+ resp_buftype, rsp_iov);
+ if (rc)
+ goto qfs_exit;
+
+ rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
+ buf->f_type = SMB2_MAGIC_NUMBER;
+ info = (struct smb2_fs_full_size_info *)(
+ le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
+ rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
+ le32_to_cpu(rsp->OutputBufferLength),
+ &rsp_iov[1],
+ sizeof(struct smb2_fs_full_size_info));
+ if (!rc)
+ smb2_copy_fs_info_to_kstatfs(info, buf);
+
+qfs_exit:
+ SMB2_open_free(&rqst[0]);
+ SMB2_query_info_free(&rqst[1]);
+ SMB2_close_free(&rqst[2]);
+ free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
+ free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
+ free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
+ return rc;
+}
+
+static int
+smb311_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;
+
+ if (!tcon->posix_extensions)
+ return smb2_queryfs(xid, tcon, buf);
+
+ 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, NULL);
+ if (rc)
+ return rc;
+
+ rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
+ fid.volatile_fid, buf);
+ buf->f_type = SMB2_MAGIC_NUMBER;
+ 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);
+
+ /*
+ * Try to use the IPC tcon, otherwise just use any
+ */
+ tcon = ses->tcon_ipc;
+ if (tcon == NULL) {
+ 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 == NULL) {
+ 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 {
+ rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
+ FSCTL_DFS_GET_REFERRALS,
+ true /* is_fsctl */,
+ (char *)dfs_req, dfs_req_size,
+ (char **)&dfs_rsp, &dfs_rsp_size);
+ } while (rc == -EAGAIN);
+
+ if (rc) {
+ if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
+ 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 && !tcon->ipc) {
+ /* ipc tcons are not refcounted */
+ 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 kvec err_iov = {NULL, 0};
+ struct smb2_err_rsp *err_buf = NULL;
+ int resp_buftype;
+ 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;
+ if (backup_cred(cifs_sb))
+ oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
+ else
+ oparms.create_options = 0;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
+ &resp_buftype);
+ if (!rc)
+ SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+ if (!rc || !err_iov.iov_base) {
+ rc = -ENOENT;
+ goto free_path;
+ }
+
+ err_buf = err_iov.iov_base;
+ if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
+ err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
+ rc = -ENOENT;
+ goto querty_exit;
+ }
+
+ /* 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 (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
+ rc = -ENOENT;
+ goto querty_exit;
+ }
+
+ if (err_iov.iov_len <
+ SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
+ rc = -ENOENT;
+ goto querty_exit;
+ }
+
+ *target_path = cifs_strndup_from_utf16(
+ (char *)symlink->PathBuffer + sub_offset,
+ sub_len, true, cifs_sb->local_nls);
+ if (!(*target_path)) {
+ rc = -ENOMEM;
+ goto querty_exit;
+ }
+ convert_delimiter(*target_path, '/');
+ cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
+
+ querty_exit:
+ free_rsp_buf(resp_buftype, err_buf);
+ free_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) {
+ rc = -ENOMEM;
+ free_xid(xid);
+ return ERR_PTR(rc);
+ }
+
+ 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, 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) {
+ rc = -ENOMEM;
+ free_xid(xid);
+ return rc;
+ }
+
+ 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, 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) {
+ rc = -EOPNOTSUPP;
+ free_xid(xid);
+ return rc;
+ }
+
+ /*
+ * Must check if file sparse since fallocate -z (zero range) assumes
+ * non-sparse allocation
+ */
+ if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
+ rc = -EOPNOTSUPP;
+ free_xid(xid);
+ return rc;
+ }
+
+ /*
+ * 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) {
+ rc = -EOPNOTSUPP;
+ free_xid(xid);
+ return rc;
+ }
+
+ 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 */, (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)) {
+ rc = -EOPNOTSUPP;
+ free_xid(xid);
+ return rc;
+ }
+
+ 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 */, (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) {
+ free_xid(xid);
+ return rc;
+ }
+
+ /*
+ * 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)
+ rc = 0;
+ /* check if extending file */
+ else if (i_size_read(inode) >= off + len)
+ /* not extending file and already not sparse */
+ rc = 0;
+ /* BB: in future add else clause to extend file */
+ else
+ rc = -EOPNOTSUPP;
+ free_xid(xid);
+ return rc;
+ }
+
+ 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))) {
+ rc = -EOPNOTSUPP;
+ free_xid(xid);
+ return rc;
+ }
+
+ 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
+smb21_downgrade_oplock(struct TCP_Server_Info *server,
+ struct cifsInodeInfo *cinode, bool set_level2)
+{
+ server->ops->set_oplock_level(cinode,
+ set_level2 ? SMB2_LEASE_READ_CACHING_HE :
+ 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};
+ unsigned int new_oplock = 0;
+
+ oplock &= 0xFF;
+ if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
+ return;
+
+ /* Check if the server granted an oplock rather than a lease */
+ if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
+ return smb2_set_oplock_level(cinode, oplock, epoch,
+ purge_cache);
+
+ if (oplock & SMB2_LEASE_READ_CACHING_HE) {
+ new_oplock |= CIFS_CACHE_READ_FLG;
+ strcat(message, "R");
+ }
+ if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
+ new_oplock |= CIFS_CACHE_HANDLE_FLG;
+ strcat(message, "H");
+ }
+ if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
+ new_oplock |= CIFS_CACHE_WRITE_FLG;
+ strcat(message, "W");
+ }
+ if (!new_oplock)
+ strncpy(message, "None", sizeof(message));
+
+ cinode->oplock = new_oplock;
+ 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;
+
+ memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
+ 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;
+
+ memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
+ 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, char *lease_key)
+{
+ 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, char *lease_key)
+{
+ 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;
+ if (lease_key)
+ memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
+ 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, unsigned int orig_len,
+ struct smb_rqst *old_rq)
+{
+ struct smb2_sync_hdr *shdr =
+ (struct smb2_sync_hdr *)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);
+}
+
+/* We can not use the normal sg_set_buf() as we will sometimes pass a
+ * stack object as buf.
+ */
+static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
+ unsigned int buflen)
+{
+ void *addr;
+ /*
+ * VMAP_STACK (at least) puts stack into the vmalloc address space
+ */
+ if (is_vmalloc_addr(buf))
+ addr = vmalloc_to_page(buf);
+ else
+ addr = virt_to_page(buf);
+ sg_set_page(sg, addr, buflen, offset_in_page(buf));
+}
+
+/* Assumes the first rqst has a transform header as the first iov.
+ * I.e.
+ * rqst[0].rq_iov[0] is transform header
+ * rqst[0].rq_iov[1+] data to be encrypted/decrypted
+ * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
+ */
+static struct scatterlist *
+init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
+{
+ unsigned int sg_len;
+ struct scatterlist *sg;
+ unsigned int i;
+ unsigned int j;
+ unsigned int idx = 0;
+ int skip;
+
+ sg_len = 1;
+ for (i = 0; i < num_rqst; i++)
+ sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
+
+ sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
+ if (!sg)
+ return NULL;
+
+ sg_init_table(sg, sg_len);
+ for (i = 0; i < num_rqst; i++) {
+ for (j = 0; j < rqst[i].rq_nvec; j++) {
+ /*
+ * The first rqst has a transform header where the
+ * first 20 bytes are not part of the encrypted blob
+ */
+ skip = (i == 0) && (j == 0) ? 20 : 0;
+ smb2_sg_set_buf(&sg[idx++],
+ rqst[i].rq_iov[j].iov_base + skip,
+ rqst[i].rq_iov[j].iov_len - skip);
+ }
+
+ for (j = 0; j < rqst[i].rq_npages; j++) {
+ unsigned int len, offset;
+
+ rqst_page_get_length(&rqst[i], j, &len, &offset);
+ sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
+ }
+ }
+ smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
+ return sg;
+}
+
+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[0] has the following format:
+ * iov[0] - transform header (associate data),
+ * iov[1-N] - SMB2 header 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, int num_rqst,
+ struct smb_rqst *rqst, int enc)
+{
+ struct smb2_transform_hdr *tr_hdr =
+ (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
+ unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
+ 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;
+ DECLARE_CRYPTO_WAIT(wait);
+ struct crypto_aead *tfm;
+ unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
+
+ 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(num_rqst, 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,
+ crypto_req_done, &wait);
+
+ rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
+ : crypto_aead_decrypt(req), &wait);
+
+ if (!rc && enc)
+ memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
+
+ kfree(iv);
+free_sg:
+ kfree(sg);
+free_req:
+ kfree(req);
+ return rc;
+}
+
+void
+smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
+{
+ int i, j;
+
+ for (i = 0; i < num_rqst; i++) {
+ if (rqst[i].rq_pages) {
+ for (j = rqst[i].rq_npages - 1; j >= 0; j--)
+ put_page(rqst[i].rq_pages[j]);
+ kfree(rqst[i].rq_pages);
+ }
+ }
+}
+
+/*
+ * This function will initialize new_rq and encrypt the content.
+ * The first entry, new_rq[0], only contains a single iov which contains
+ * a smb2_transform_hdr and is pre-allocated by the caller.
+ * This function then populates new_rq[1+] with the content from olq_rq[0+].
+ *
+ * The end result is an array of smb_rqst structures where the first structure
+ * only contains a single iov for the transform header which we then can pass
+ * to crypt_message().
+ *
+ * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
+ * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
+ */
+static int
+smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
+ struct smb_rqst *new_rq, struct smb_rqst *old_rq)
+{
+ struct page **pages;
+ struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
+ unsigned int npages;
+ unsigned int orig_len = 0;
+ int i, j;
+ int rc = -ENOMEM;
+
+ for (i = 1; i < num_rqst; i++) {
+ npages = old_rq[i - 1].rq_npages;
+ pages = kmalloc_array(npages, sizeof(struct page *),
+ GFP_KERNEL);
+ if (!pages)
+ goto err_free;
+
+ new_rq[i].rq_pages = pages;
+ new_rq[i].rq_npages = npages;
+ new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
+ new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
+ new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
+ new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
+ new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
+
+ orig_len += smb_rqst_len(server, &old_rq[i - 1]);
+
+ for (j = 0; j < npages; j++) {
+ pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
+ if (!pages[j])
+ goto err_free;
+ }
+
+ /* copy pages form the old */
+ for (j = 0; j < npages; j++) {
+ char *dst, *src;
+ unsigned int offset, len;
+
+ rqst_page_get_length(&new_rq[i], j, &len, &offset);
+
+ dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
+ src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
+
+ memcpy(dst, src, len);
+ kunmap(new_rq[i].rq_pages[j]);
+ kunmap(old_rq[i - 1].rq_pages[j]);
+ }
+ }
+
+ /* fill the 1st iov with a transform header */
+ fill_transform_hdr(tr_hdr, orig_len, old_rq);
+
+ rc = crypt_message(server, num_rqst, new_rq, 1);
+ cifs_dbg(FYI, "encrypt message returned %d", rc);
+ if (rc)
+ goto err_free;
+
+ return rc;
+
+err_free:
+ smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
+ return rc;
+}
+
+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};
+ 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, 1, &rqst, 0);
+ cifs_dbg(FYI, "decrypt message returned %d\n", rc);
+
+ if (rc)
+ return rc;
+
+ memmove(buf, iov[1].iov_base, buf_data_size);
+
+ server->total_read = buf_data_size + page_data_size;
+
+ 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, 0, 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 = (struct smb2_sync_hdr *)buf;
+ struct bio_vec *bvec = NULL;
+ struct iov_iter iter;
+ struct kvec iov;
+ int length;
+ bool use_rdma_mr = false;
+
+ 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;
+
+ /* set up first two iov to get credits */
+ rdata->iov[0].iov_base = buf;
+ rdata->iov[0].iov_len = 0;
+ rdata->iov[1].iov_base = buf;
+ rdata->iov[1].iov_len =
+ min_t(unsigned int, buf_len, server->vals->read_rsp_size);
+ cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
+ rdata->iov[0].iov_base, rdata->iov[0].iov_len);
+ cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
+ rdata->iov[1].iov_base, rdata->iov[1].iov_len);
+
+ rdata->result = server->ops->map_error(buf, true);
+ if (rdata->result != 0) {
+ cifs_dbg(FYI, "%s: server returned error %d\n",
+ __func__, rdata->result);
+ /* normal error on read response */
+ dequeue_mid(mid, false);
+ return 0;
+ }
+
+ data_offset = server->ops->read_data_offset(buf);
+#ifdef CONFIG_CIFS_SMB_DIRECT
+ use_rdma_mr = rdata->mr;
+#endif
+ data_len = server->ops->read_data_length(buf, use_rdma_mr);
+
+ 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;
+ }
+
+ 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 = server->pdu_size;
+ int rc;
+ int i = 0;
+
+ len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
+ 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) -
+ 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,
+ 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 **mids, char **bufs,
+ int *num_mids)
+{
+ int ret, length;
+ char *buf = server->smallbuf;
+ struct smb2_sync_hdr *shdr;
+ unsigned int pdu_length = server->pdu_size;
+ unsigned int buf_size;
+ struct mid_q_entry *mid_entry;
+ int next_is_large;
+ char *next_buffer = NULL;
+
+ *num_mids = 0;
+
+ /* switch to large buffer if too big for a small one */
+ if (pdu_length > 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);
+ if (length < 0)
+ return length;
+ server->total_read += length;
+
+ buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
+ length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
+ if (length)
+ return length;
+
+ next_is_large = server->large_buf;
+one_more:
+ shdr = (struct smb2_sync_hdr *)buf;
+ if (shdr->NextCommand) {
+ if (next_is_large)
+ next_buffer = (char *)cifs_buf_get();
+ else
+ next_buffer = (char *)cifs_small_buf_get();
+ memcpy(next_buffer,
+ buf + le32_to_cpu(shdr->NextCommand),
+ pdu_length - le32_to_cpu(shdr->NextCommand));
+ }
+
+ 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_entry->resp_buf_size = server->pdu_size;
+ }
+
+ if (*num_mids >= MAX_COMPOUND) {
+ cifs_dbg(VFS, "too many PDUs in compound\n");
+ return -1;
+ }
+ bufs[*num_mids] = buf;
+ mids[(*num_mids)++] = mid_entry;
+
+ if (mid_entry && mid_entry->handle)
+ ret = mid_entry->handle(server, mid_entry);
+ else
+ ret = cifs_handle_standard(server, mid_entry);
+
+ if (ret == 0 && shdr->NextCommand) {
+ pdu_length -= le32_to_cpu(shdr->NextCommand);
+ server->large_buf = next_is_large;
+ if (next_is_large)
+ server->bigbuf = buf = next_buffer;
+ else
+ server->smallbuf = buf = next_buffer;
+ goto one_more;
+ } else if (ret != 0) {
+ /*
+ * ret != 0 here means that we didn't get to handle_mid() thus
+ * server->smallbuf and server->bigbuf are still valid. We need
+ * to free next_buffer because it is not going to be used
+ * anywhere.
+ */
+ if (next_is_large)
+ free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
+ else
+ free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
+ }
+
+ return ret;
+}
+
+static int
+smb3_receive_transform(struct TCP_Server_Info *server,
+ struct mid_q_entry **mids, char **bufs, int *num_mids)
+{
+ char *buf = server->smallbuf;
+ unsigned int pdu_length = server->pdu_size;
+ struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
+ unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
+
+ if (pdu_length < 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 < 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;
+ }
+
+ /* TODO: add support for compounds containing READ. */
+ if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
+ *num_mids = 1;
+ return receive_encrypted_read(server, &mids[0]);
+ }
+
+ return receive_encrypted_standard(server, mids, bufs, num_mids);
+}
+
+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, server->pdu_size,
+ NULL, 0, 0);
+}
+
+static int
+smb2_next_header(char *buf)
+{
+ struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
+ struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
+
+ if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
+ return sizeof(struct smb2_transform_hdr) +
+ le32_to_cpu(t_hdr->OriginalMessageSize);
+
+ return le32_to_cpu(hdr->NextCommand);
+}
+
+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,
+ .revert_current_mid = smb2_revert_current_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_XATTR
+ .query_all_EAs = smb2_query_eas,
+ .set_EA = smb2_set_ea,
+#endif /* CIFS_XATTR */
+#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 */
+ .next_header = smb2_next_header,
+};
+
+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,
+ .revert_current_mid = smb2_revert_current_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 = smb21_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_XATTR
+ .query_all_EAs = smb2_query_eas,
+ .set_EA = smb2_set_ea,
+#endif /* CIFS_XATTR */
+#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 */
+ .next_header = smb2_next_header,
+};
+
+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,
+ .revert_current_mid = smb2_revert_current_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 = smb21_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,
+ .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_XATTR
+ .query_all_EAs = smb2_query_eas,
+ .set_EA = smb2_set_ea,
+#endif /* CIFS_XATTR */
+#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 */
+ .next_header = smb2_next_header,
+};
+
+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,
+ .revert_current_mid = smb2_revert_current_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 = smb21_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,
+ .posix_mkdir = smb311_posix_mkdir,
+ .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 = smb311_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,
+ .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_XATTR
+ .query_all_EAs = smb2_query_eas,
+ .set_EA = smb2_set_ea,
+#endif /* CIFS_XATTR */
+#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 */
+ .next_header = smb2_next_header,
+};
+
+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_sync_hdr),
+ .header_preamble_size = 0,
+ .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_sync_hdr),
+ .header_preamble_size = 0,
+ .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 smb3any_values = {
+ .version_string = SMB3ANY_VERSION_STRING,
+ .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
+ .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
+ .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_sync_hdr),
+ .header_preamble_size = 0,
+ .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 smbdefault_values = {
+ .version_string = SMBDEFAULT_VERSION_STRING,
+ .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
+ .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
+ .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_sync_hdr),
+ .header_preamble_size = 0,
+ .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 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 | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
+ .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_sync_hdr),
+ .header_preamble_size = 0,
+ .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 | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
+ .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_sync_hdr),
+ .header_preamble_size = 0,
+ .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 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 | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
+ .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_sync_hdr),
+ .header_preamble_size = 0,
+ .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),
+};