diff options
| -rw-r--r-- | fs/cifs/smb2ops.c | 35 | ||||
| -rw-r--r-- | fs/cifs/smb2pdu.c | 71 | ||||
| -rw-r--r-- | fs/cifs/smb2pdu.h | 1 | ||||
| -rw-r--r-- | fs/cifs/smb2proto.h | 3 |
4 files changed, 109 insertions, 1 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 09506d918ecb..e2a8b9d90ad8 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -1533,6 +1533,39 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, return rc; } +#ifdef CONFIG_CIFS_SMB311 +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; +} +#endif /* SMB311 */ + static bool smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2) { @@ -3338,7 +3371,7 @@ struct smb_version_operations smb311_operations = { .is_status_pending = smb2_is_status_pending, .is_session_expired = smb2_is_session_expired, .oplock_response = smb2_oplock_response, - .queryfs = smb2_queryfs, + .queryfs = smb311_queryfs, .mand_lock = smb2_mand_lock, .mand_unlock_range = smb2_unlock_range, .push_mand_locks = smb2_push_mandatory_locks, 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) diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index c2a4526512b5..ecb0feeac844 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -1223,6 +1223,7 @@ struct smb2_lease_ack { #define FS_DRIVER_PATH_INFORMATION 9 /* Local only */ #define FS_VOLUME_FLAGS_INFORMATION 10 /* Local only */ #define FS_SECTOR_SIZE_INFORMATION 11 /* SMB3 or later. Query */ +#define FS_POSIX_INFORMATION 100 /* SMB3.1.1 POSIX. Query */ struct smb2_fs_full_size_info { __le64 TotalAllocationUnits; diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index 6e6a4f2ec890..7019459c5748 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -197,6 +197,9 @@ void smb2_cancelled_close_fid(struct work_struct *work); extern int SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_file_id, u64 volatile_file_id, struct kstatfs *FSData); +extern int SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_file_id, u64 volatile_file_id, + struct kstatfs *FSData); extern int SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_file_id, u64 volatile_file_id, int lvl); extern int SMB2_lock(const unsigned int xid, struct cifs_tcon *tcon, |