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Diffstat (limited to 'fs/cifs/smb2ops.c')
-rw-r--r--fs/cifs/smb2ops.c111
1 files changed, 75 insertions, 36 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index baa825f4cec0..b36c46f48705 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -328,16 +328,6 @@ smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
/* 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);
@@ -356,8 +346,15 @@ smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
#ifdef CONFIG_CIFS_SMB_DIRECT
if (server->rdma) {
if (server->sign)
+ /*
+ * Account for SMB2 data transfer packet header and
+ * possible encryption header
+ */
wsize = min_t(unsigned int,
- wsize, server->smbd_conn->max_fragmented_send_size);
+ wsize,
+ server->smbd_conn->max_fragmented_send_size -
+ SMB2_READWRITE_PDU_HEADER_SIZE -
+ sizeof(struct smb2_transform_hdr));
else
wsize = min_t(unsigned int,
wsize, server->smbd_conn->max_readwrite_size);
@@ -378,16 +375,6 @@ smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
/* 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);
@@ -407,8 +394,15 @@ smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
#ifdef CONFIG_CIFS_SMB_DIRECT
if (server->rdma) {
if (server->sign)
+ /*
+ * Account for SMB2 data transfer packet header and
+ * possible encryption header
+ */
rsize = min_t(unsigned int,
- rsize, server->smbd_conn->max_fragmented_recv_size);
+ rsize,
+ server->smbd_conn->max_fragmented_recv_size -
+ SMB2_READWRITE_PDU_HEADER_SIZE -
+ sizeof(struct smb2_transform_hdr));
else
rsize = min_t(unsigned int,
rsize, server->smbd_conn->max_readwrite_size);
@@ -794,7 +788,8 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
tcon->crfid.has_lease = true;
smb2_parse_contexts(server, o_rsp,
&oparms.fid->epoch,
- oparms.fid->lease_key, &oplock, NULL);
+ oparms.fid->lease_key, &oplock,
+ NULL, NULL);
} else
goto oshr_exit;
@@ -838,7 +833,7 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
if (no_cached_open)
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
- NULL);
+ NULL, NULL);
else
rc = open_shroot(xid, tcon, cifs_sb, &fid);
@@ -878,7 +873,8 @@ smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
+ NULL, NULL);
if (rc)
return;
@@ -913,7 +909,8 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
+ NULL);
if (rc) {
kfree(utf16_path);
return rc;
@@ -1116,7 +1113,8 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
void *data[1];
struct smb2_file_full_ea_info *ea = NULL;
struct kvec close_iov[1];
- int rc;
+ struct smb2_query_info_rsp *rsp;
+ int rc, used_len = 0;
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
@@ -1139,6 +1137,38 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
cifs_sb);
if (rc == -ENODATA)
goto sea_exit;
+ } else {
+ /* If we are adding a attribute we should first check
+ * if there will be enough space available to store
+ * the new EA. If not we should not add it since we
+ * would not be able to even read the EAs back.
+ */
+ rc = smb2_query_info_compound(xid, tcon, utf16_path,
+ FILE_READ_EA,
+ FILE_FULL_EA_INFORMATION,
+ SMB2_O_INFO_FILE,
+ CIFSMaxBufSize -
+ MAX_SMB2_CREATE_RESPONSE_SIZE -
+ MAX_SMB2_CLOSE_RESPONSE_SIZE,
+ &rsp_iov[1], &resp_buftype[1], cifs_sb);
+ if (rc == 0) {
+ rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
+ used_len = le32_to_cpu(rsp->OutputBufferLength);
+ }
+ free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
+ resp_buftype[1] = CIFS_NO_BUFFER;
+ memset(&rsp_iov[1], 0, sizeof(rsp_iov[1]));
+ rc = 0;
+
+ /* Use a fudge factor of 256 bytes in case we collide
+ * with a different set_EAs command.
+ */
+ if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
+ MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 <
+ used_len + ea_name_len + ea_value_len + 1) {
+ rc = -ENOSPC;
+ goto sea_exit;
+ }
}
}
@@ -1331,6 +1361,7 @@ smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
cfile->fid.persistent_fid = fid->persistent_fid;
cfile->fid.volatile_fid = fid->volatile_fid;
+ cfile->fid.access = fid->access;
#ifdef CONFIG_CIFS_DEBUG2
cfile->fid.mid = fid->mid;
#endif /* CIFS_DEBUG2 */
@@ -2088,7 +2119,8 @@ smb3_notify(const unsigned int xid, struct file *pfile,
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
+ NULL);
if (rc)
goto notify_exit;
@@ -2188,6 +2220,8 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
goto qdf_free;
}
+ atomic_inc(&tcon->num_remote_opens);
+
qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
trace_smb3_query_dir_done(xid, fid->persistent_fid,
@@ -2507,7 +2541,8 @@ smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
+ NULL, NULL);
if (rc)
return rc;
@@ -2992,7 +3027,8 @@ get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
+ NULL);
kfree(utf16_path);
if (!rc) {
rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
@@ -3050,7 +3086,8 @@ set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
+ NULL, NULL);
kfree(utf16_path);
if (!rc) {
rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
@@ -3212,6 +3249,10 @@ static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
* Extending the file
*/
if ((keep_size == false) && i_size_read(inode) < off + len) {
+ rc = inode_newsize_ok(inode, off + len);
+ if (rc)
+ goto out;
+
if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0)
smb2_set_sparse(xid, tcon, cfile, inode, false);
@@ -3294,7 +3335,7 @@ static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offs
* some servers (Windows2016) will not reflect recent writes in
* QUERY_ALLOCATED_RANGES until SMB2_flush is called.
*/
- wrcfile = find_writable_file(cifsi, false);
+ wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
if (wrcfile) {
filemap_write_and_wait(inode->i_mapping);
smb2_flush_file(xid, tcon, &wrcfile->fid);
@@ -3383,7 +3424,7 @@ static int smb3_fiemap(struct cifs_tcon *tcon,
if (rc)
goto out;
- if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
+ if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
rc = -EINVAL;
goto out;
}
@@ -4115,7 +4156,6 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
if (server->ops->is_session_expired &&
server->ops->is_session_expired(buf)) {
cifs_reconnect(server);
- wake_up(&server->response_q);
return -1;
}
@@ -4479,14 +4519,12 @@ smb3_receive_transform(struct TCP_Server_Info *server,
cifs_server_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_server_dbg(VFS, "Transform message is broken\n");
cifs_reconnect(server);
- wake_up(&server->response_q);
return -ECONNABORTED;
}
@@ -4795,6 +4833,7 @@ struct smb_version_operations smb21_operations = {
.wp_retry_size = smb2_wp_retry_size,
.dir_needs_close = smb2_dir_needs_close,
.enum_snapshots = smb3_enum_snapshots,
+ .notify = smb3_notify,
.get_dfs_refer = smb2_get_dfs_refer,
.select_sectype = smb2_select_sectype,
#ifdef CONFIG_CIFS_XATTR
generated by cgit (git 2.34.1) at 2024-06-11 07:41:08 +0000