forked from Minki/linux
CIFS: Add SMB2 support for rename operation
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky
Steve French
parent
8ceb984379
commit
35143eb5c2
@ -74,6 +74,10 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
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* SMB2_open() call.
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*/
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break;
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case SMB2_OP_RENAME:
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tmprc = SMB2_rename(xid, tcon, persistent_fid, volatile_fid,
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(__le16 *)data);
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break;
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default:
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cERROR(1, "Invalid command");
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break;
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@ -170,3 +174,24 @@ smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
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0, CREATE_DELETE_ON_CLOSE, NULL,
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SMB2_OP_DELETE);
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}
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int
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smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
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const char *from_name, const char *to_name,
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struct cifs_sb_info *cifs_sb)
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{
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__le16 *smb2_to_name = NULL;
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int rc;
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smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
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if (smb2_to_name == NULL) {
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rc = -ENOMEM;
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goto smb2_rename_path;
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}
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rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, DELETE,
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FILE_OPEN, 0, 0, smb2_to_name, SMB2_OP_RENAME);
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smb2_rename_path:
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kfree(smb2_to_name);
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return rc;
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}
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@ -451,6 +451,7 @@ struct smb_version_operations smb21_operations = {
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.mkdir_setinfo = smb2_mkdir_setinfo,
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.rmdir = smb2_rmdir,
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.unlink = smb2_unlink,
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.rename = smb2_rename_path,
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.open = smb2_open_file,
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.set_fid = smb2_set_fid,
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.close = smb2_close_file,
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@ -1602,3 +1602,110 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
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}
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return rc;
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}
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static int
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send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
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u64 persistent_fid, u64 volatile_fid, int info_class,
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unsigned int num, void **data, unsigned int *size)
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{
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struct smb2_set_info_req *req;
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struct smb2_set_info_rsp *rsp = NULL;
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struct kvec *iov;
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int rc = 0;
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int resp_buftype;
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unsigned int i;
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struct TCP_Server_Info *server;
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struct cifs_ses *ses = tcon->ses;
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if (ses && (ses->server))
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server = ses->server;
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else
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return -EIO;
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if (!num)
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return -EINVAL;
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iov = kmalloc(sizeof(struct kvec) * num, GFP_KERNEL);
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if (!iov)
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return -ENOMEM;
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rc = small_smb2_init(SMB2_SET_INFO, tcon, (void **) &req);
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if (rc) {
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kfree(iov);
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return rc;
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}
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req->InfoType = SMB2_O_INFO_FILE;
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req->FileInfoClass = info_class;
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req->PersistentFileId = persistent_fid;
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req->VolatileFileId = volatile_fid;
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/* 4 for RFC1001 length and 1 for Buffer */
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req->BufferOffset =
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cpu_to_le16(sizeof(struct smb2_set_info_req) - 1 - 4);
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req->BufferLength = cpu_to_le32(*size);
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inc_rfc1001_len(req, *size - 1 /* Buffer */);
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memcpy(req->Buffer, *data, *size);
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iov[0].iov_base = (char *)req;
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/* 4 for RFC1001 length */
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iov[0].iov_len = get_rfc1002_length(req) + 4;
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for (i = 1; i < num; i++) {
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inc_rfc1001_len(req, size[i]);
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le32_add_cpu(&req->BufferLength, size[i]);
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iov[i].iov_base = (char *)data[i];
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iov[i].iov_len = size[i];
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}
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rc = SendReceive2(xid, ses, iov, num, &resp_buftype, 0);
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rsp = (struct smb2_set_info_rsp *)iov[0].iov_base;
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if (rc != 0) {
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cifs_stats_fail_inc(tcon, SMB2_SET_INFO_HE);
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goto out;
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}
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if (rsp == NULL) {
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rc = -EIO;
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goto out;
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}
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out:
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free_rsp_buf(resp_buftype, rsp);
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kfree(iov);
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return rc;
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}
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int
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SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
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u64 persistent_fid, u64 volatile_fid, __le16 *target_file)
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{
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struct smb2_file_rename_info info;
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void **data;
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unsigned int size[2];
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int rc;
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int len = (2 * UniStrnlen((wchar_t *)target_file, PATH_MAX));
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data = kmalloc(sizeof(void *) * 2, GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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info.ReplaceIfExists = 1; /* 1 = replace existing target with new */
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/* 0 = fail if target already exists */
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info.RootDirectory = 0; /* MBZ for network ops (why does spec say?) */
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info.FileNameLength = cpu_to_le32(len);
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data[0] = &info;
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size[0] = sizeof(struct smb2_file_rename_info);
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data[1] = target_file;
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size[1] = len + 2 /* null */;
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rc = send_set_info(xid, tcon, persistent_fid, volatile_fid,
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FILE_RENAME_INFORMATION, 2, data, size);
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kfree(data);
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return rc;
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}
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@ -568,6 +568,25 @@ struct smb2_query_info_rsp {
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__u8 Buffer[1];
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} __packed;
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struct smb2_set_info_req {
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struct smb2_hdr hdr;
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__le16 StructureSize; /* Must be 33 */
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__u8 InfoType;
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__u8 FileInfoClass;
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__le32 BufferLength;
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__le16 BufferOffset;
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__u16 Reserved;
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__le32 AdditionalInformation;
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__u64 PersistentFileId; /* opaque endianness */
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__u64 VolatileFileId; /* opaque endianness */
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__u8 Buffer[1];
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} __packed;
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struct smb2_set_info_rsp {
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struct smb2_hdr hdr;
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__le16 StructureSize; /* Must be 2 */
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} __packed;
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/*
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* PDU infolevel structure definitions
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* BB consider moving to a different header
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@ -625,6 +644,15 @@ struct smb2_file_internal_info {
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__le64 IndexNumber;
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} __packed; /* level 6 Query */
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struct smb2_file_rename_info { /* encoding of request for level 10 */
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__u8 ReplaceIfExists; /* 1 = replace existing target with new */
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/* 0 = fail if target already exists */
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__u8 Reserved[7];
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__u64 RootDirectory; /* MBZ for network operations (why says spec?) */
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__le32 FileNameLength;
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char FileName[0]; /* New name to be assigned */
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} __packed; /* level 10 Set */
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/*
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* This level 18, although with struct with same name is different from cifs
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* level 0x107. Level 0x107 has an extra u64 between AccessFlags and
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@ -65,6 +65,9 @@ extern int smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon,
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const char *name, struct cifs_sb_info *cifs_sb);
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extern int smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon,
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const char *name, struct cifs_sb_info *cifs_sb);
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extern int smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
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const char *from_name, const char *to_name,
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struct cifs_sb_info *cifs_sb);
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extern int smb2_open_file(const unsigned int xid, struct cifs_tcon *tcon,
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const char *full_path, int disposition,
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@ -106,5 +109,8 @@ extern int smb2_async_writev(struct cifs_writedata *wdata);
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extern int SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
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unsigned int *nbytes, struct kvec *iov, int n_vec);
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extern int SMB2_echo(struct TCP_Server_Info *server);
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extern int SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
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u64 persistent_fid, u64 volatile_fid,
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__le16 *target_file);
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#endif /* _SMB2PROTO_H */
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