From bea851b8babe6c87c36e97c9de0dd0bea0dd5802 Mon Sep 17 00:00:00 2001 From: Steve French Date: Thu, 14 Jun 2018 21:56:32 -0500 Subject: [PATCH] smb3: Fix mode on mkdir on smb311 mounts mkdir was not passing the mode on smb3.11 mounts with posix extensions Signed-off-by: Steve French --- fs/cifs/cifsglob.h | 4 ++ fs/cifs/inode.c | 13 ++++- fs/cifs/smb2ops.c | 1 + fs/cifs/smb2pdu.c | 153 ++++++++++++++++++++++++++++++++++++++++++++++++++++ fs/cifs/smb2proto.h | 4 ++ fs/cifs/trace.h | 3 +- 6 files changed, 175 insertions(+), 3 deletions(-) diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 9dd5f1a..bd78da5 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -315,6 +315,10 @@ struct smb_version_operations { /* send echo request */ int (*echo)(struct TCP_Server_Info *); /* create directory */ + int (*posix_mkdir)(const unsigned int xid, struct inode *inode, + umode_t mode, struct cifs_tcon *tcon, + const char *full_path, + struct cifs_sb_info *cifs_sb); int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *, struct cifs_sb_info *); /* set info on created directory */ diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index f4697f5..a2cfb33 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1575,6 +1575,17 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode) goto mkdir_out; } + server = tcon->ses->server; + +#ifdef CONFIG_CIFS_SMB311 + if ((server->ops->posix_mkdir) && (tcon->posix_extensions)) { + rc = server->ops->posix_mkdir(xid, inode, mode, tcon, full_path, + cifs_sb); + d_drop(direntry); /* for time being always refresh inode info */ + goto mkdir_out; + } +#endif /* SMB311 */ + if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability))) { rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb, @@ -1583,8 +1594,6 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode) goto mkdir_out; } - server = tcon->ses->server; - if (!server->ops->mkdir) { rc = -ENOSYS; goto mkdir_out; diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index b2390e9..badcfb2 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -3313,6 +3313,7 @@ struct smb_version_operations smb311_operations = { .set_compression = smb2_set_compression, .mkdir = smb2_mkdir, .mkdir_setinfo = smb2_mkdir_setinfo, + .posix_mkdir = smb311_posix_mkdir, .rmdir = smb2_rmdir, .unlink = smb2_unlink, .rename = smb2_rename_path, diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 7daf38a..810b857 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -1911,6 +1911,159 @@ alloc_path_with_tree_prefix(__le16 **out_path, int *out_size, int *out_len, return 0; } +#ifdef CONFIG_CIFS_SMB311 +int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, + umode_t mode, struct cifs_tcon *tcon, + const char *full_path, + struct cifs_sb_info *cifs_sb) +{ + struct smb_rqst rqst; + struct smb2_create_req *req; + struct smb2_create_rsp *rsp; + struct TCP_Server_Info *server; + struct cifs_ses *ses = tcon->ses; + struct kvec iov[3]; /* make sure at least one for each open context */ + struct kvec rsp_iov = {NULL, 0}; + int resp_buftype; + int uni_path_len; + __le16 *copy_path = NULL; + int copy_size; + int rc = 0; + unsigned int n_iov = 2; + __u32 file_attributes = 0; + char *pc_buf = NULL; + int flags = 0; + unsigned int total_len; + __le16 *path = cifs_convert_path_to_utf16(full_path, cifs_sb); + + if (!path) + return -ENOMEM; + + cifs_dbg(FYI, "mkdir\n"); + + if (ses && (ses->server)) + server = ses->server; + else + return -EIO; + + rc = smb2_plain_req_init(SMB2_CREATE, tcon, (void **) &req, &total_len); + + if (rc) + return rc; + + if (smb3_encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + + req->ImpersonationLevel = IL_IMPERSONATION; + req->DesiredAccess = cpu_to_le32(FILE_WRITE_ATTRIBUTES); + /* File attributes ignored on open (used in create though) */ + req->FileAttributes = cpu_to_le32(file_attributes); + req->ShareAccess = FILE_SHARE_ALL_LE; + req->CreateDisposition = cpu_to_le32(FILE_CREATE); + req->CreateOptions = cpu_to_le32(CREATE_NOT_FILE); + + iov[0].iov_base = (char *)req; + /* -1 since last byte is buf[0] which is sent below (path) */ + iov[0].iov_len = total_len - 1; + + req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req)); + + /* [MS-SMB2] 2.2.13 NameOffset: + * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of + * the SMB2 header, the file name includes a prefix that will + * be processed during DFS name normalization as specified in + * section 3.3.5.9. Otherwise, the file name is relative to + * the share that is identified by the TreeId in the SMB2 + * header. + */ + if (tcon->share_flags & SHI1005_FLAGS_DFS) { + int name_len; + + req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; + rc = alloc_path_with_tree_prefix(©_path, ©_size, + &name_len, + tcon->treeName, path); + if (rc) { + cifs_small_buf_release(req); + return rc; + } + req->NameLength = cpu_to_le16(name_len * 2); + uni_path_len = copy_size; + path = copy_path; + } else { + uni_path_len = (2 * UniStrnlen((wchar_t *)path, PATH_MAX)) + 2; + /* MUST set path len (NameLength) to 0 opening root of share */ + req->NameLength = cpu_to_le16(uni_path_len - 2); + if (uni_path_len % 8 != 0) { + copy_size = roundup(uni_path_len, 8); + copy_path = kzalloc(copy_size, GFP_KERNEL); + if (!copy_path) { + cifs_small_buf_release(req); + return -ENOMEM; + } + memcpy((char *)copy_path, (const char *)path, + uni_path_len); + uni_path_len = copy_size; + path = copy_path; + } + } + + iov[1].iov_len = uni_path_len; + iov[1].iov_base = path; + req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_NONE; + + if (tcon->posix_extensions) { + if (n_iov > 2) { + struct create_context *ccontext = + (struct create_context *)iov[n_iov-1].iov_base; + ccontext->Next = + cpu_to_le32(iov[n_iov-1].iov_len); + } + + rc = add_posix_context(iov, &n_iov, mode); + if (rc) { + cifs_small_buf_release(req); + kfree(copy_path); + return rc; + } + pc_buf = iov[n_iov-1].iov_base; + } + + + memset(&rqst, 0, sizeof(struct smb_rqst)); + rqst.rq_iov = iov; + rqst.rq_nvec = n_iov; + + rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, + &rsp_iov); + + cifs_small_buf_release(req); + rsp = (struct smb2_create_rsp *)rsp_iov.iov_base; + + if (rc != 0) { + cifs_stats_fail_inc(tcon, SMB2_CREATE_HE); + trace_smb3_posix_mkdir_err(xid, tcon->tid, ses->Suid, + CREATE_NOT_FILE, FILE_WRITE_ATTRIBUTES, rc); + goto smb311_mkdir_exit; + } else + trace_smb3_posix_mkdir_done(xid, rsp->PersistentFileId, tcon->tid, + ses->Suid, CREATE_NOT_FILE, + FILE_WRITE_ATTRIBUTES); + + SMB2_close(xid, tcon, rsp->PersistentFileId, rsp->VolatileFileId); + + /* Eventually save off posix specific response info and timestaps */ + +smb311_mkdir_exit: + kfree(copy_path); + kfree(pc_buf); + free_rsp_buf(resp_buftype, rsp); + return rc; + +} +#endif /* SMB311 */ + int SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, __u8 *oplock, struct smb2_file_all_info *buf, diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index c840200..78371c1 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -79,6 +79,10 @@ extern int smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, bool set_alloc); extern int smb2_set_file_info(struct inode *inode, const char *full_path, FILE_BASIC_INFO *buf, const unsigned int xid); +extern int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, + umode_t mode, struct cifs_tcon *tcon, + const char *full_path, + struct cifs_sb_info *cifs_sb); extern int smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, struct cifs_sb_info *cifs_sb); extern void smb2_mkdir_setinfo(struct inode *inode, const char *full_path, diff --git a/fs/cifs/trace.h b/fs/cifs/trace.h index 61e74d4..67e413f6 100644 --- a/fs/cifs/trace.h +++ b/fs/cifs/trace.h @@ -378,7 +378,7 @@ DEFINE_EVENT(smb3_open_err_class, smb3_##name, \ TP_ARGS(xid, tid, sesid, create_options, desired_access, rc)) DEFINE_SMB3_OPEN_ERR_EVENT(open_err); - +DEFINE_SMB3_OPEN_ERR_EVENT(posix_mkdir_err); DECLARE_EVENT_CLASS(smb3_open_done_class, TP_PROTO(unsigned int xid, @@ -420,6 +420,7 @@ DEFINE_EVENT(smb3_open_done_class, smb3_##name, \ TP_ARGS(xid, fid, tid, sesid, create_options, desired_access)) DEFINE_SMB3_OPEN_DONE_EVENT(open_done); +DEFINE_SMB3_OPEN_DONE_EVENT(posix_mkdir_done); #endif /* _CIFS_TRACE_H */ -- 2.7.4