seq_puts(s, ",nocase");
if (tcon->retry)
seq_puts(s, ",hard");
+ if (tcon->use_persistent)
+ seq_puts(s, ",persistenthandles");
+ else if (tcon->use_resilient)
+ seq_puts(s, ",resilienthandles");
if (tcon->unix_ext)
seq_puts(s, ",unix");
else
bool mfsymlinks:1; /* use Minshall+French Symlinks */
bool multiuser:1;
bool rwpidforward:1; /* pid forward for read/write operations */
- bool nosharesock;
+ bool nosharesock:1;
+ bool persistent:1;
+ bool nopersistent:1;
+ bool resilient:1; /* noresilient not required since not fored for CA */
unsigned int rsize;
unsigned int wsize;
bool sockopt_tcp_nodelay:1;
bool broken_posix_open; /* e.g. Samba server versions < 3.3.2, 3.2.9 */
bool broken_sparse_sup; /* if server or share does not support sparse */
bool need_reconnect:1; /* connection reset, tid now invalid */
+ bool use_resilient:1; /* use resilient instead of durable handles */
+ bool use_persistent:1; /* use persistent instead of durable handles */
#ifdef CONFIG_CIFS_SMB2
bool print:1; /* set if connection to printer share */
bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */
__u64 persistent_fid; /* persist file id for smb2 */
__u64 volatile_fid; /* volatile file id for smb2 */
__u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */
+ __u8 create_guid[16];
#endif
struct cifs_pending_open *pending_open;
unsigned int epoch;
Opt_sign, Opt_seal, Opt_noac,
Opt_fsc, Opt_mfsymlinks,
Opt_multiuser, Opt_sloppy, Opt_nosharesock,
+ Opt_persistent, Opt_nopersistent,
+ Opt_resilient, Opt_noresilient,
/* Mount options which take numeric value */
Opt_backupuid, Opt_backupgid, Opt_uid,
{ Opt_multiuser, "multiuser" },
{ Opt_sloppy, "sloppy" },
{ Opt_nosharesock, "nosharesock" },
+ { Opt_persistent, "persistenthandles"},
+ { Opt_nopersistent, "nopersistenthandles"},
+ { Opt_resilient, "resilienthandles"},
+ { Opt_noresilient, "noresilienthandles"},
{ Opt_backupuid, "backupuid=%s" },
{ Opt_backupgid, "backupgid=%s" },
case Opt_nosharesock:
vol->nosharesock = true;
break;
+ case Opt_nopersistent:
+ vol->nopersistent = true;
+ if (vol->persistent) {
+ cifs_dbg(VFS,
+ "persistenthandles mount options conflict\n");
+ goto cifs_parse_mount_err;
+ }
+ break;
+ case Opt_persistent:
+ vol->persistent = true;
+ if ((vol->nopersistent) || (vol->resilient)) {
+ cifs_dbg(VFS,
+ "persistenthandles mount options conflict\n");
+ goto cifs_parse_mount_err;
+ }
+ break;
+ case Opt_resilient:
+ vol->resilient = true;
+ if (vol->persistent) {
+ cifs_dbg(VFS,
+ "persistenthandles mount options conflict\n");
+ goto cifs_parse_mount_err;
+ }
+ break;
+ case Opt_noresilient:
+ vol->resilient = false; /* already the default */
+ break;
/* Numeric Values */
case Opt_backupuid:
cifs_dbg(FYI, "DFS disabled (%d)\n", tcon->Flags);
}
tcon->seal = volume_info->seal;
+ tcon->use_persistent = false;
+ /* check if SMB2 or later, CIFS does not support persistent handles */
+ if (volume_info->persistent) {
+ if (ses->server->vals->protocol_id == 0) {
+ cifs_dbg(VFS,
+ "SMB3 or later required for persistent handles\n");
+ rc = -EOPNOTSUPP;
+ goto out_fail;
+#ifdef CONFIG_CIFS_SMB2
+ } else if (ses->server->capabilities &
+ SMB2_GLOBAL_CAP_PERSISTENT_HANDLES)
+ tcon->use_persistent = true;
+ else /* persistent handles requested but not supported */ {
+ cifs_dbg(VFS,
+ "Persistent handles not supported on share\n");
+ rc = -EOPNOTSUPP;
+ goto out_fail;
+#endif /* CONFIG_CIFS_SMB2 */
+ }
+#ifdef CONFIG_CIFS_SMB2
+ } else if ((tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
+ && (ses->server->capabilities & SMB2_GLOBAL_CAP_PERSISTENT_HANDLES)
+ && (volume_info->nopersistent == false)) {
+ cifs_dbg(FYI, "enabling persistent handles\n");
+ tcon->use_persistent = true;
+#endif /* CONFIG_CIFS_SMB2 */
+ } else if (volume_info->resilient) {
+ if (ses->server->vals->protocol_id == 0) {
+ cifs_dbg(VFS,
+ "SMB2.1 or later required for resilient handles\n");
+ rc = -EOPNOTSUPP;
+ goto out_fail;
+ }
+ tcon->use_resilient = true;
+ }
+
/*
* We can have only one retry value for a connection to a share so for
* resources mounted more than once to the same server share the last
goto mount_fail_check;
}
+#ifdef CONFIG_CIFS_SMB2
+ if ((volume_info->persistent == true) && ((ses->server->capabilities &
+ SMB2_GLOBAL_CAP_PERSISTENT_HANDLES) == 0)) {
+ cifs_dbg(VFS, "persistent handles not supported by server\n");
+ rc = -EOPNOTSUPP;
+ goto mount_fail_check;
+ }
+#endif /* CONFIG_CIFS_SMB2*/
+
/* search for existing tcon to this server share */
tcon = cifs_get_tcon(ses, volume_info);
if (IS_ERR(tcon)) {
struct smb2_file_all_info *smb2_data = NULL;
__u8 smb2_oplock[17];
struct cifs_fid *fid = oparms->fid;
+ struct network_resiliency_req nr_ioctl_req;
smb2_path = cifs_convert_path_to_utf16(oparms->path, oparms->cifs_sb);
if (smb2_path == NULL) {
if (rc)
goto out;
+
+ if (oparms->tcon->use_resilient) {
+ nr_ioctl_req.Timeout = 0; /* use server default (120 seconds) */
+ nr_ioctl_req.Reserved = 0;
+ rc = SMB2_ioctl(xid, oparms->tcon, fid->persistent_fid,
+ fid->volatile_fid, FSCTL_LMR_REQUEST_RESILIENCY, true,
+ (char *)&nr_ioctl_req, sizeof(nr_ioctl_req),
+ NULL, NULL /* no return info */);
+ if (rc == -EOPNOTSUPP) {
+ cifs_dbg(VFS,
+ "resiliency not supported by server, disabling\n");
+ oparms->tcon->use_resilient = false;
+ } else if (rc)
+ cifs_dbg(FYI, "error %d setting resiliency\n", rc);
+
+ rc = 0;
+ }
+
if (buf) {
/* open response does not have IndexNumber field - get it */
rc = SMB2_get_srv_num(xid, oparms->tcon, fid->persistent_fid,
cfile->fid.volatile_fid, cfile->pid, &eof, false);
}
-#ifdef CONFIG_CIFS_SMB311
static int
smb2_duplicate_extents(const unsigned int xid,
struct cifsFileInfo *srcfile,
duplicate_extents_out:
return rc;
}
-#endif /* CONFIG_CIFS_SMB311 */
-
static int
smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
.create_lease_buf = smb3_create_lease_buf,
.parse_lease_buf = smb3_parse_lease_buf,
.clone_range = smb2_clone_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,
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,
+ .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES,
.large_lock_type = 0,
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
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,
+ .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES,
.large_lock_type = 0,
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
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,
+ .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES,
.large_lock_type = 0,
.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
return 0;
}
+static struct create_durable_v2 *
+create_durable_v2_buf(struct cifs_fid *pfid)
+{
+ struct create_durable_v2 *buf;
+
+ buf = kzalloc(sizeof(struct create_durable_v2), GFP_KERNEL);
+ if (!buf)
+ return NULL;
+
+ buf->ccontext.DataOffset = cpu_to_le16(offsetof
+ (struct create_durable_v2, dcontext));
+ buf->ccontext.DataLength = cpu_to_le32(sizeof(struct durable_context_v2));
+ buf->ccontext.NameOffset = cpu_to_le16(offsetof
+ (struct create_durable_v2, Name));
+ buf->ccontext.NameLength = cpu_to_le16(4);
+
+ buf->dcontext.Timeout = 0; /* Should this be configurable by workload */
+ buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT);
+ get_random_bytes(buf->dcontext.CreateGuid, 16);
+ memcpy(pfid->create_guid, buf->dcontext.CreateGuid, 16);
+
+ /* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DH2Q" */
+ buf->Name[0] = 'D';
+ buf->Name[1] = 'H';
+ buf->Name[2] = '2';
+ buf->Name[3] = 'Q';
+ return buf;
+}
+
+static struct create_durable_handle_reconnect_v2 *
+create_reconnect_durable_v2_buf(struct cifs_fid *fid)
+{
+ struct create_durable_handle_reconnect_v2 *buf;
+
+ buf = kzalloc(sizeof(struct create_durable_handle_reconnect_v2),
+ GFP_KERNEL);
+ if (!buf)
+ return NULL;
+
+ buf->ccontext.DataOffset =
+ cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2,
+ dcontext));
+ buf->ccontext.DataLength =
+ cpu_to_le32(sizeof(struct durable_reconnect_context_v2));
+ buf->ccontext.NameOffset =
+ cpu_to_le16(offsetof(struct create_durable_handle_reconnect_v2,
+ Name));
+ buf->ccontext.NameLength = cpu_to_le16(4);
+
+ buf->dcontext.Fid.PersistentFileId = fid->persistent_fid;
+ buf->dcontext.Fid.VolatileFileId = fid->volatile_fid;
+ buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT);
+ memcpy(buf->dcontext.CreateGuid, fid->create_guid, 16);
+
+ /* SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 is "DH2C" */
+ buf->Name[0] = 'D';
+ buf->Name[1] = 'H';
+ buf->Name[2] = '2';
+ buf->Name[3] = 'C';
+ return buf;
+}
+
static int
-add_durable_context(struct kvec *iov, unsigned int *num_iovec,
+add_durable_v2_context(struct kvec *iov, unsigned int *num_iovec,
struct cifs_open_parms *oparms)
{
struct smb2_create_req *req = iov[0].iov_base;
unsigned int num = *num_iovec;
+ iov[num].iov_base = create_durable_v2_buf(oparms->fid);
+ if (iov[num].iov_base == NULL)
+ return -ENOMEM;
+ iov[num].iov_len = sizeof(struct create_durable_v2);
+ if (!req->CreateContextsOffset)
+ req->CreateContextsOffset =
+ cpu_to_le32(sizeof(struct smb2_create_req) - 4 +
+ iov[1].iov_len);
+ le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_v2));
+ inc_rfc1001_len(&req->hdr, sizeof(struct create_durable_v2));
+ *num_iovec = num + 1;
+ return 0;
+}
+
+static int
+add_durable_reconnect_v2_context(struct kvec *iov, unsigned int *num_iovec,
+ struct cifs_open_parms *oparms)
+{
+ struct smb2_create_req *req = iov[0].iov_base;
+ unsigned int num = *num_iovec;
+
+ /* indicate that we don't need to relock the file */
+ oparms->reconnect = false;
+
+ iov[num].iov_base = create_reconnect_durable_v2_buf(oparms->fid);
+ if (iov[num].iov_base == NULL)
+ return -ENOMEM;
+ iov[num].iov_len = sizeof(struct create_durable_handle_reconnect_v2);
+ if (!req->CreateContextsOffset)
+ req->CreateContextsOffset =
+ cpu_to_le32(sizeof(struct smb2_create_req) - 4 +
+ iov[1].iov_len);
+ le32_add_cpu(&req->CreateContextsLength,
+ sizeof(struct create_durable_handle_reconnect_v2));
+ inc_rfc1001_len(&req->hdr,
+ sizeof(struct create_durable_handle_reconnect_v2));
+ *num_iovec = num + 1;
+ return 0;
+}
+
+static int
+add_durable_context(struct kvec *iov, unsigned int *num_iovec,
+ struct cifs_open_parms *oparms, bool use_persistent)
+{
+ struct smb2_create_req *req = iov[0].iov_base;
+ unsigned int num = *num_iovec;
+
+ if (use_persistent) {
+ if (oparms->reconnect)
+ return add_durable_reconnect_v2_context(iov, num_iovec,
+ oparms);
+ else
+ return add_durable_v2_context(iov, num_iovec, oparms);
+ }
+
if (oparms->reconnect) {
iov[num].iov_base = create_reconnect_durable_buf(oparms->fid);
/* indicate that we don't need to relock the file */
ccontext->Next =
cpu_to_le32(server->vals->create_lease_size);
}
- rc = add_durable_context(iov, &num_iovecs, oparms);
+
+ rc = add_durable_context(iov, &num_iovecs, oparms,
+ tcon->use_persistent);
if (rc) {
cifs_small_buf_release(req);
kfree(copy_path);
} Data;
} __packed;
+/* See MS-SMB2 2.2.13.2.11 */
+/* Flags */
+#define SMB2_DHANDLE_FLAG_PERSISTENT 0x00000002
+struct durable_context_v2 {
+ __le32 Timeout;
+ __le32 Flags;
+ __u64 Reserved;
+ __u8 CreateGuid[16];
+} __packed;
+
+struct create_durable_v2 {
+ struct create_context ccontext;
+ __u8 Name[8];
+ struct durable_context_v2 dcontext;
+} __packed;
+
+/* See MS-SMB2 2.2.13.2.12 */
+struct durable_reconnect_context_v2 {
+ struct {
+ __u64 PersistentFileId;
+ __u64 VolatileFileId;
+ } Fid;
+ __u8 CreateGuid[16];
+ __le32 Flags; /* see above DHANDLE_FLAG_PERSISTENT */
+} __packed;
+
+/* See MS-SMB2 2.2.14.2.12 */
+struct durable_reconnect_context_v2_rsp {
+ __le32 Timeout;
+ __le32 Flags; /* see above DHANDLE_FLAG_PERSISTENT */
+} __packed;
+
+struct create_durable_handle_reconnect_v2 {
+ struct create_context ccontext;
+ __u8 Name[8];
+ struct durable_reconnect_context_v2 dcontext;
+} __packed;
+
#define COPY_CHUNK_RES_KEY_SIZE 24
struct resume_key_req {
char ResumeKey[COPY_CHUNK_RES_KEY_SIZE];
/* Integrity flags for above */
#define FSCTL_INTEGRITY_FLAG_CHECKSUM_ENFORCEMENT_OFF 0x00000001
+/* See MS-SMB2 2.2.31.3 */
+struct network_resiliency_req {
+ __le32 Timeout;
+ __le32 Reserved;
+} __packed;
+/* There is no buffer for the response ie no struct network_resiliency_rsp */
+
struct validate_negotiate_info_req {
__le32 Capabilities;
#define FSCTL_SRV_ENUMERATE_SNAPSHOTS 0x00144064
/* Retrieve an opaque file reference for server-side data movement ie copy */
#define FSCTL_SRV_REQUEST_RESUME_KEY 0x00140078
-#define FSCTL_LMR_REQUEST_RESILIENCY 0x001401D4 /* BB add struct */
+#define FSCTL_LMR_REQUEST_RESILIENCY 0x001401D4
#define FSCTL_LMR_GET_LINK_TRACK_INF 0x001400E8 /* BB add struct */
#define FSCTL_LMR_SET_LINK_TRACK_INF 0x001400EC /* BB add struct */
#define FSCTL_VALIDATE_NEGOTIATE_INFO 0x00140204
projects / karo-tx-linux.git / commitdiff