diff options
Diffstat (limited to 'fs/cifs/smb2pdu.c')
| -rw-r--r-- | fs/cifs/smb2pdu.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 6852ff5f06be..fa9fc3fab60e 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -3938,6 +3938,27 @@ copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf, return; } +#ifdef CONFIG_CIFS_SMB311 +static void +copy_posix_fs_info_to_kstatfs(FILE_SYSTEM_POSIX_INFO *response_data, + struct kstatfs *kst) +{ + kst->f_bsize = le32_to_cpu(response_data->BlockSize); + kst->f_blocks = le64_to_cpu(response_data->TotalBlocks); + kst->f_bfree = le64_to_cpu(response_data->BlocksAvail); + if (response_data->UserBlocksAvail == cpu_to_le64(-1)) + kst->f_bavail = kst->f_bfree; + else + kst->f_bavail = le64_to_cpu(response_data->UserBlocksAvail); + if (response_data->TotalFileNodes != cpu_to_le64(-1)) + kst->f_files = le64_to_cpu(response_data->TotalFileNodes); + if (response_data->FreeFileNodes != cpu_to_le64(-1)) + kst->f_ffree = le64_to_cpu(response_data->FreeFileNodes); + + return; +} +#endif /* SMB311 */ + static int build_qfs_info_req(struct kvec *iov, struct cifs_tcon *tcon, int level, int outbuf_len, u64 persistent_fid, u64 volatile_fid) @@ -3974,6 +3995,56 @@ build_qfs_info_req(struct kvec *iov, struct cifs_tcon *tcon, int level, return 0; } +#ifdef CONFIG_CIFS_SMB311 +int +SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata) +{ + struct smb_rqst rqst; + struct smb2_query_info_rsp *rsp = NULL; + struct kvec iov; + struct kvec rsp_iov; + int rc = 0; + int resp_buftype; + struct cifs_ses *ses = tcon->ses; + FILE_SYSTEM_POSIX_INFO *info = NULL; + int flags = 0; + + rc = build_qfs_info_req(&iov, tcon, FS_POSIX_INFORMATION, + sizeof(FILE_SYSTEM_POSIX_INFO), + persistent_fid, volatile_fid); + if (rc) + return rc; + + if (smb3_encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + memset(&rqst, 0, sizeof(struct smb_rqst)); + rqst.rq_iov = &iov; + rqst.rq_nvec = 1; + + rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(iov.iov_base); + if (rc) { + cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); + goto posix_qfsinf_exit; + } + rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; + + info = (FILE_SYSTEM_POSIX_INFO *)( + le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); + rc = validate_iov(le16_to_cpu(rsp->OutputBufferOffset), + le32_to_cpu(rsp->OutputBufferLength), &rsp_iov, + sizeof(FILE_SYSTEM_POSIX_INFO)); + if (!rc) + copy_posix_fs_info_to_kstatfs(info, fsdata); + +posix_qfsinf_exit: + free_rsp_buf(resp_buftype, rsp_iov.iov_base); + return rc; +} +#endif /* SMB311 */ + int SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid, struct kstatfs *fsdata) |