Fix bug #8972 - Directory group write permission bit is set if unix extensions are...
[samba.git] / source3 / smbd / open.c
index e93485b3d83e85412131db97483a6812cb197b49..dfa45ef739a868b201eff51b14de8c035d5d5810 100644 (file)
@@ -22,6 +22,7 @@
 #include "includes.h"
 #include "smbd/globals.h"
 
+extern struct current_user current_user;
 extern const struct generic_mapping file_generic_mapping;
 
 struct deferred_open_record {
@@ -49,11 +50,23 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
  SMB1 file varient of se_access_check. Never test FILE_READ_ATTRIBUTES.
 ****************************************************************************/
 
-NTSTATUS smb1_file_se_access_check(const struct security_descriptor *sd,
+NTSTATUS smb1_file_se_access_check(connection_struct *conn,
+                         const struct security_descriptor *sd,
                           const NT_USER_TOKEN *token,
                           uint32_t access_desired,
                           uint32_t *access_granted)
 {
+       *access_granted = 0;
+
+       if (conn->server_info->utok.uid == 0 || conn->admin_user) {
+               /* I'm sorry sir, I didn't know you were root... */
+               *access_granted = access_desired;
+               if (access_desired & SEC_FLAG_MAXIMUM_ALLOWED) {
+                       *access_granted |= FILE_GENERIC_ALL;
+               }
+               return NT_STATUS_OK;
+       }
+
        return se_access_check(sd,
                                token,
                                (access_desired & ~FILE_READ_ATTRIBUTES),
@@ -64,23 +77,32 @@ NTSTATUS smb1_file_se_access_check(const struct security_descriptor *sd,
  Check if we have open rights.
 ****************************************************************************/
 
-static NTSTATUS check_open_rights(struct connection_struct *conn,
+NTSTATUS smbd_check_open_rights(struct connection_struct *conn,
                                const struct smb_filename *smb_fname,
                                uint32_t access_mask,
                                uint32_t *access_granted)
 {
        /* Check if we have rights to open. */
        NTSTATUS status;
-       struct security_descriptor *sd;
+       struct security_descriptor *sd = NULL;
 
-       *access_granted = 0;
-
-       if (conn->server_info->utok.uid == 0 || conn->admin_user) {
-               /* I'm sorry sir, I didn't know you were root... */
+       if ((access_mask & DELETE_ACCESS) && !lp_acl_check_permissions(SNUM(conn))) {
                *access_granted = access_mask;
-               if (access_mask & SEC_FLAG_MAXIMUM_ALLOWED) {
-                       *access_granted |= FILE_GENERIC_ALL;
-               }
+
+               DEBUG(10,("smbd_check_open_rights: not checking ACL "
+                       "on DELETE_ACCESS on file %s. Granting 0x%x\n",
+                       smb_fname_str_dbg(smb_fname),
+                       (unsigned int)*access_granted ));
+               return NT_STATUS_OK;
+       }
+
+       if (access_mask == DELETE_ACCESS &&
+                       VALID_STAT(smb_fname->st) &&
+                       S_ISLNK(smb_fname->st.st_ex_mode)) {
+               /* We can always delete a symlink. */
+               DEBUG(10,("smbd_check_open_rights: not checking ACL "
+                       "on DELETE_ACCESS on symlink %s.\n",
+                       smb_fname_str_dbg(smb_fname) ));
                return NT_STATUS_OK;
        }
 
@@ -90,27 +112,36 @@ static NTSTATUS check_open_rights(struct connection_struct *conn,
                        DACL_SECURITY_INFORMATION),&sd);
 
        if (!NT_STATUS_IS_OK(status)) {
-               DEBUG(10, ("check_open_rights: Could not get acl "
+               DEBUG(10, ("smbd_check_open_rights: Could not get acl "
                        "on %s: %s\n",
                        smb_fname_str_dbg(smb_fname),
                        nt_errstr(status)));
                return status;
        }
 
-       status = smb1_file_se_access_check(sd,
+       status = smb1_file_se_access_check(conn,
+                               sd,
                                conn->server_info->ptok,
                                access_mask,
                                access_granted);
 
-       TALLOC_FREE(sd);
-
-       DEBUG(10,("check_open_rights: file %s requesting "
+       DEBUG(10,("smbd_check_open_rights: file %s requesting "
                "0x%x returning 0x%x (%s)\n",
                smb_fname_str_dbg(smb_fname),
                (unsigned int)access_mask,
                (unsigned int)*access_granted,
                nt_errstr(status) ));
 
+       if (!NT_STATUS_IS_OK(status)) {
+               if (DEBUGLEVEL >= 10) {
+                       DEBUG(10,("smbd_check_open_rights: acl for %s is:\n",
+                               smb_fname_str_dbg(smb_fname) ));
+                       NDR_PRINT_DEBUG(security_descriptor, sd);
+               }
+       }
+
+       TALLOC_FREE(sd);
+
        return status;
 }
 
@@ -119,11 +150,11 @@ static NTSTATUS check_open_rights(struct connection_struct *conn,
 ****************************************************************************/
 
 static NTSTATUS fd_open(struct connection_struct *conn,
-                   struct smb_filename *smb_fname,
                    files_struct *fsp,
                    int flags,
                    mode_t mode)
 {
+       struct smb_filename *smb_fname = fsp->fsp_name;
        NTSTATUS status = NT_STATUS_OK;
 
 #ifdef O_NOFOLLOW
@@ -218,15 +249,18 @@ void change_file_owner_to_parent(connection_struct *conn,
        if (ret == -1) {
                DEBUG(0,("change_file_owner_to_parent: failed to fchown "
                         "file %s to parent directory uid %u. Error "
-                        "was %s\n", fsp->fsp_name,
+                        "was %s\n", fsp_str_dbg(fsp),
                         (unsigned int)smb_fname_parent->st.st_ex_uid,
                         strerror(errno) ));
-       }
-
-       DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
-                 "parent directory uid %u.\n", fsp->fsp_name,
+       } else {
+               DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
+                 "parent directory uid %u.\n", fsp_str_dbg(fsp),
                  (unsigned int)smb_fname_parent->st.st_ex_uid));
 
+               /* Ensure the uid entry is updated. */
+               fsp->fsp_name->st.st_ex_uid = smb_fname_parent->st.st_ex_uid;
+       }
+
        TALLOC_FREE(smb_fname_parent);
 }
 
@@ -300,10 +334,9 @@ NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
 
        /* Ensure we're pointing at the same place. */
        if (smb_fname_cwd->st.st_ex_dev != psbuf->st_ex_dev ||
-           smb_fname_cwd->st.st_ex_ino != psbuf->st_ex_ino ||
-           smb_fname_cwd->st.st_ex_mode != psbuf->st_ex_mode ) {
+           smb_fname_cwd->st.st_ex_ino != psbuf->st_ex_ino) {
                DEBUG(0,("change_dir_owner_to_parent: "
-                        "device/inode/mode on directory %s changed. "
+                        "device/inode on directory %s changed. "
                         "Refusing to chown !\n", fname ));
                status = NT_STATUS_ACCESS_DENIED;
                goto chdir;
@@ -327,6 +360,9 @@ NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
                  "directory %s to parent directory uid %u.\n",
                  fname, (unsigned int)smb_fname_parent->st.st_ex_uid ));
 
+       /* Ensure the uid entry is updated. */
+       psbuf->st_ex_uid = smb_fname_parent->st.st_ex_uid;
+
  chdir:
        vfs_ChDir(conn,saved_dir);
  out:
@@ -343,27 +379,21 @@ static NTSTATUS open_file(files_struct *fsp,
                          connection_struct *conn,
                          struct smb_request *req,
                          const char *parent_dir,
-                         struct smb_filename *smb_fname,
                          int flags,
                          mode_t unx_mode,
                          uint32 access_mask, /* client requested access mask. */
                          uint32 open_access_mask) /* what we're actually using in the open. */
 {
-       char *path = NULL;
+       struct smb_filename *smb_fname = fsp->fsp_name;
        NTSTATUS status = NT_STATUS_OK;
        int accmode = (flags & O_ACCMODE);
        int local_flags = flags;
-       bool file_existed = VALID_STAT(smb_fname->st);
+       bool file_existed = VALID_STAT(fsp->fsp_name->st);
+       bool file_created = false;
 
        fsp->fh->fd = -1;
        errno = EPERM;
 
-       status = get_full_smb_filename(talloc_tos(), smb_fname,
-                                      &path);
-       if (!NT_STATUS_IS_OK(status)) {
-               return status;
-       }
-
        /* Check permissions */
 
        /*
@@ -440,9 +470,9 @@ static NTSTATUS open_file(files_struct *fsp,
                         * wildcard characters are allowed in stream names
                         * only test the basefilename
                         */
-                       wild = fsp->base_fsp->fsp_name;
+                       wild = fsp->base_fsp->fsp_name->base_name;
                } else {
-                       wild = path;
+                       wild = smb_fname->base_name;
                }
                if ((local_flags & O_CREAT) && !file_existed &&
                    ms_has_wild(wild))  {
@@ -450,7 +480,7 @@ static NTSTATUS open_file(files_struct *fsp,
                }
 
                /* Actually do the open */
-               status = fd_open(conn, smb_fname, fsp, local_flags, unx_mode);
+               status = fd_open(conn, fsp, local_flags, unx_mode);
                if (!NT_STATUS_IS_OK(status)) {
                        DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
                                 "(flags=%d)\n", smb_fname_str_dbg(smb_fname),
@@ -459,21 +489,7 @@ static NTSTATUS open_file(files_struct *fsp,
                }
 
                if ((local_flags & O_CREAT) && !file_existed) {
-
-                       /* Inherit the ACL if required */
-                       if (lp_inherit_perms(SNUM(conn))) {
-                               inherit_access_posix_acl(conn, parent_dir, path,
-                                                  unx_mode);
-                       }
-
-                       /* Change the owner if required. */
-                       if (lp_inherit_owner(SNUM(conn))) {
-                               change_file_owner_to_parent(conn, parent_dir,
-                                                           fsp);
-                       }
-
-                       notify_fname(conn, NOTIFY_ACTION_ADDED,
-                                    FILE_NOTIFY_CHANGE_FILE_NAME, path);
+                       file_created = true;
                }
 
        } else {
@@ -481,7 +497,7 @@ static NTSTATUS open_file(files_struct *fsp,
                if (file_existed) {
                        uint32_t access_granted = 0;
 
-                       status = check_open_rights(conn,
+                       status = smbd_check_open_rights(conn,
                                        smb_fname,
                                        access_mask,
                                        &access_granted);
@@ -551,7 +567,7 @@ static NTSTATUS open_file(files_struct *fsp,
                                                          smb_fname)));
                                } else {
                                        DEBUG(10,("open_file: "
-                                                 "check_open_rights on file "
+                                                 "smbd_check_open_rights on file "
                                                  "%s returned %s\n",
                                                  smb_fname_str_dbg(smb_fname),
                                                  nt_errstr(status) ));
@@ -583,6 +599,29 @@ static NTSTATUS open_file(files_struct *fsp,
                        fd_close(fsp);
                        return status;
                }
+
+               if (file_created) {
+                       /* Do all inheritance work after we've
+                          done a successful stat call and filled
+                          in the stat struct in fsp->fsp_name. */
+
+                       /* Inherit the ACL if required */
+                       if (lp_inherit_perms(SNUM(conn))) {
+                               inherit_access_posix_acl(conn, parent_dir,
+                                                        smb_fname->base_name,
+                                                        unx_mode);
+                       }
+
+                       /* Change the owner if required. */
+                       if (lp_inherit_owner(SNUM(conn))) {
+                               change_file_owner_to_parent(conn, parent_dir,
+                                                           fsp);
+                       }
+
+                       notify_fname(conn, NOTIFY_ACTION_ADDED,
+                                    FILE_NOTIFY_CHANGE_FILE_NAME,
+                                    smb_fname->base_name);
+               }
        }
 
        /*
@@ -619,12 +658,11 @@ static NTSTATUS open_file(files_struct *fsp,
                fsp->aio_write_behind = True;
        }
 
-       string_set(&fsp->fsp_name, path);
        fsp->wcp = NULL; /* Write cache pointer. */
 
        DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
                 conn->server_info->unix_name,
-                fsp->fsp_name,
+                smb_fname_str_dbg(smb_fname),
                 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
                 conn->num_files_open));
 
@@ -632,23 +670,6 @@ static NTSTATUS open_file(files_struct *fsp,
        return NT_STATUS_OK;
 }
 
-/*******************************************************************
- Return True if the filename is one of the special executable types.
-********************************************************************/
-
-bool is_executable(const char *fname)
-{
-       if ((fname = strrchr_m(fname,'.'))) {
-               if (strequal(fname,".com") ||
-                   strequal(fname,".dll") ||
-                   strequal(fname,".exe") ||
-                   strequal(fname,".sym")) {
-                       return True;
-               }
-       }
-       return False;
-}
-
 /****************************************************************************
  Check if we can open a file with a share mode.
  Returns True if conflict, False if not.
@@ -791,7 +812,8 @@ static void validate_my_share_entries(int num,
                str = talloc_asprintf(talloc_tos(),
                        "validate_my_share_entries: "
                        "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
-                        fsp->fsp_name, (unsigned int)fsp->oplock_type,
+                        fsp->fsp_name->base_name,
+                        (unsigned int)fsp->oplock_type,
                         (unsigned int)share_entry->op_type );
                smb_panic(str);
        }
@@ -1025,7 +1047,7 @@ static bool delay_for_oplocks(struct share_mode_lock *lck,
        }
 
        DEBUG(10,("delay_for_oplocks: oplock type 0x%x on file %s\n",
-               fsp->oplock_type, fsp->fsp_name));
+                 fsp->oplock_type, fsp_str_dbg(fsp)));
 
        /* No delay. */
        return false;
@@ -1139,7 +1161,7 @@ bool open_match_attributes(connection_struct *conn,
 NTSTATUS fcb_or_dos_open(struct smb_request *req,
                                     connection_struct *conn,
                                     files_struct *fsp_to_dup_into,
-                                    const char *fname,
+                                    const struct smb_filename *smb_fname,
                                     struct file_id id,
                                     uint16 file_pid,
                                     uint16 vuid,
@@ -1150,14 +1172,14 @@ NTSTATUS fcb_or_dos_open(struct smb_request *req,
        files_struct *fsp;
 
        DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
-                "file %s.\n", fname ));
+                "file %s.\n", smb_fname_str_dbg(smb_fname)));
 
        for(fsp = file_find_di_first(id); fsp;
            fsp = file_find_di_next(fsp)) {
 
                DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
                          "vuid = %u, file_pid = %u, private_options = 0x%x "
-                         "access_mask = 0x%x\n", fsp->fsp_name,
+                         "access_mask = 0x%x\n", fsp_str_dbg(fsp),
                          fsp->fh->fd, (unsigned int)fsp->vuid,
                          (unsigned int)fsp->file_pid,
                          (unsigned int)fsp->fh->private_options,
@@ -1169,7 +1191,9 @@ NTSTATUS fcb_or_dos_open(struct smb_request *req,
                    (fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
                                                 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
                    (fsp->access_mask & FILE_WRITE_DATA) &&
-                   strequal(fsp->fsp_name, fname)) {
+                   strequal(fsp->fsp_name->base_name, smb_fname->base_name) &&
+                   strequal(fsp->fsp_name->stream_name,
+                            smb_fname->stream_name)) {
                        DEBUG(10,("fcb_or_dos_open: file match\n"));
                        break;
                }
@@ -1180,156 +1204,15 @@ NTSTATUS fcb_or_dos_open(struct smb_request *req,
        }
 
        /* quite an insane set of semantics ... */
-       if (is_executable(fname) &&
+       if (is_executable(smb_fname->base_name) &&
            (fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
                DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
                return NT_STATUS_INVALID_PARAMETER;
        }
 
        /* We need to duplicate this fsp. */
-       dup_file_fsp(req, fsp, access_mask, share_access,
-                       create_options, fsp_to_dup_into);
-
-       return NT_STATUS_OK;
-}
-
-/****************************************************************************
- Open a file with a share mode - old openX method - map into NTCreate.
-****************************************************************************/
-
-bool map_open_params_to_ntcreate(const char *fname, int deny_mode, int open_func,
-                                uint32 *paccess_mask,
-                                uint32 *pshare_mode,
-                                uint32 *pcreate_disposition,
-                                uint32 *pcreate_options)
-{
-       uint32 access_mask;
-       uint32 share_mode;
-       uint32 create_disposition;
-       uint32 create_options = FILE_NON_DIRECTORY_FILE;
-
-       DEBUG(10,("map_open_params_to_ntcreate: fname = %s, deny_mode = 0x%x, "
-                 "open_func = 0x%x\n",
-                 fname, (unsigned int)deny_mode, (unsigned int)open_func ));
-
-       /* Create the NT compatible access_mask. */
-       switch (GET_OPENX_MODE(deny_mode)) {
-               case DOS_OPEN_EXEC: /* Implies read-only - used to be FILE_READ_DATA */
-               case DOS_OPEN_RDONLY:
-                       access_mask = FILE_GENERIC_READ;
-                       break;
-               case DOS_OPEN_WRONLY:
-                       access_mask = FILE_GENERIC_WRITE;
-                       break;
-               case DOS_OPEN_RDWR:
-               case DOS_OPEN_FCB:
-                       access_mask = FILE_GENERIC_READ|FILE_GENERIC_WRITE;
-                       break;
-               default:
-                       DEBUG(10,("map_open_params_to_ntcreate: bad open mode = 0x%x\n",
-                                 (unsigned int)GET_OPENX_MODE(deny_mode)));
-                       return False;
-       }
-
-       /* Create the NT compatible create_disposition. */
-       switch (open_func) {
-               case OPENX_FILE_EXISTS_FAIL|OPENX_FILE_CREATE_IF_NOT_EXIST:
-                       create_disposition = FILE_CREATE;
-                       break;
-
-               case OPENX_FILE_EXISTS_OPEN:
-                       create_disposition = FILE_OPEN;
-                       break;
-
-               case OPENX_FILE_EXISTS_OPEN|OPENX_FILE_CREATE_IF_NOT_EXIST:
-                       create_disposition = FILE_OPEN_IF;
-                       break;
-       
-               case OPENX_FILE_EXISTS_TRUNCATE:
-                       create_disposition = FILE_OVERWRITE;
-                       break;
-
-               case OPENX_FILE_EXISTS_TRUNCATE|OPENX_FILE_CREATE_IF_NOT_EXIST:
-                       create_disposition = FILE_OVERWRITE_IF;
-                       break;
-
-               default:
-                       /* From samba4 - to be confirmed. */
-                       if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_EXEC) {
-                               create_disposition = FILE_CREATE;
-                               break;
-                       }
-                       DEBUG(10,("map_open_params_to_ntcreate: bad "
-                                 "open_func 0x%x\n", (unsigned int)open_func));
-                       return False;
-       }
-       /* Create the NT compatible share modes. */
-       switch (GET_DENY_MODE(deny_mode)) {
-               case DENY_ALL:
-                       share_mode = FILE_SHARE_NONE;
-                       break;
-
-               case DENY_WRITE:
-                       share_mode = FILE_SHARE_READ;
-                       break;
-
-               case DENY_READ:
-                       share_mode = FILE_SHARE_WRITE;
-                       break;
-
-               case DENY_NONE:
-                       share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
-                       break;
-
-               case DENY_DOS:
-                       create_options |= NTCREATEX_OPTIONS_PRIVATE_DENY_DOS;
-                       if (is_executable(fname)) {
-                               share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
-                       } else {
-                               if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_RDONLY) {
-                                       share_mode = FILE_SHARE_READ;
-                               } else {
-                                       share_mode = FILE_SHARE_NONE;
-                               }
-                       }
-                       break;
-
-               case DENY_FCB:
-                       create_options |= NTCREATEX_OPTIONS_PRIVATE_DENY_FCB;
-                       share_mode = FILE_SHARE_NONE;
-                       break;
-
-               default:
-                       DEBUG(10,("map_open_params_to_ntcreate: bad deny_mode 0x%x\n",
-                               (unsigned int)GET_DENY_MODE(deny_mode) ));
-                       return False;
-       }
-
-       DEBUG(10,("map_open_params_to_ntcreate: file %s, access_mask = 0x%x, "
-                 "share_mode = 0x%x, create_disposition = 0x%x, "
-                 "create_options = 0x%x\n",
-                 fname,
-                 (unsigned int)access_mask,
-                 (unsigned int)share_mode,
-                 (unsigned int)create_disposition,
-                 (unsigned int)create_options ));
-
-       if (paccess_mask) {
-               *paccess_mask = access_mask;
-       }
-       if (pshare_mode) {
-               *pshare_mode = share_mode;
-       }
-       if (pcreate_disposition) {
-               *pcreate_disposition = create_disposition;
-       }
-       if (pcreate_options) {
-               *pcreate_options = create_options;
-       }
-
-       return True;
-
+       return dup_file_fsp(req, fsp, access_mask, share_access,
+                           create_options, fsp_to_dup_into);
 }
 
 static void schedule_defer_open(struct share_mode_lock *lck,
@@ -1407,7 +1290,8 @@ static NTSTATUS calculate_access_mask(connection_struct *conn,
                                return NT_STATUS_ACCESS_DENIED;
                        }
 
-                       status = smb1_file_se_access_check(sd,
+                       status = smb1_file_se_access_check(conn,
+                                       sd,
                                        conn->server_info->ptok,
                                        access_mask,
                                        &access_granted);
@@ -1437,7 +1321,6 @@ static NTSTATUS calculate_access_mask(connection_struct *conn,
 
 static NTSTATUS open_file_ntcreate(connection_struct *conn,
                            struct smb_request *req,
-                           struct smb_filename *smb_fname,
                            uint32 access_mask,         /* access bits (FILE_READ_DATA etc.) */
                            uint32 share_access,        /* share constants (FILE_SHARE_READ etc) */
                            uint32 create_disposition,  /* FILE_OPEN_IF etc. */
@@ -1448,6 +1331,7 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
                            int *pinfo,
                            files_struct *fsp)
 {
+       struct smb_filename *smb_fname = fsp->fsp_name;
        int flags=0;
        int flags2=0;
        bool file_existed = VALID_STAT(smb_fname->st);
@@ -1466,18 +1350,10 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
        struct share_mode_lock *lck = NULL;
        uint32 open_access_mask = access_mask;
        NTSTATUS status;
-       int ret_flock;
-       char *fname = NULL;
        char *parent_dir;
 
        ZERO_STRUCT(id);
 
-       status = get_full_smb_filename(talloc_tos(), smb_fname,
-                                      &fname);
-       if (!NT_STATUS_IS_OK(status)) {
-               return status;
-       }
-
        if (conn->printer) {
                /*
                 * Printers are handled completely differently.
@@ -1497,8 +1373,8 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
                        return NT_STATUS_INTERNAL_ERROR;
                }
 
-               return print_fsp_open(req, conn, fname, req->vuid, fsp,
-                                     &smb_fname->st);
+               return print_fsp_open(req, conn, smb_fname->base_name,
+                                     req->vuid, fsp);
        }
 
        if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
@@ -1511,10 +1387,16 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
                unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
                new_dos_attributes = 0;
        } else {
+               /* Windows allows a new file to be created and
+                  silently removes a FILE_ATTRIBUTE_DIRECTORY
+                  sent by the client. Do the same. */
+
+               new_dos_attributes &= ~FILE_ATTRIBUTE_DIRECTORY;
+
                /* We add aARCH to this as this mode is only used if the file is
                 * created new. */
-               unx_mode = unix_mode(conn, new_dos_attributes | aARCH, fname,
-                                    parent_dir);
+               unx_mode = unix_mode(conn, new_dos_attributes | aARCH,
+                                    smb_fname, parent_dir);
        }
 
        DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
@@ -1559,16 +1441,10 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
                remove_deferred_open_smb_message(req->mid);
        }
 
-       status = check_name(conn, smb_fname->base_name);
-       if (!NT_STATUS_IS_OK(status)) {
-               return status;
-       }
-
        if (!posix_open) {
                new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
                if (file_existed) {
-                       existing_dos_attributes = dos_mode(conn, fname,
-                                                          &smb_fname->st);
+                       existing_dos_attributes = dos_mode(conn, smb_fname);
                }
        }
 
@@ -1786,7 +1662,7 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
 
                lck = get_share_mode_lock(talloc_tos(), id,
                                          conn->connectpath,
-                                         fname, &old_write_time);
+                                         smb_fname, &old_write_time);
 
                if (lck == NULL) {
                        DEBUG(0, ("Could not get share mode lock\n"));
@@ -1850,7 +1726,7 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
                                status = fcb_or_dos_open(req,
                                                        conn,
                                                        fsp,
-                                                       fname,
+                                                       smb_fname,
                                                        id,
                                                        req->smbpid,
                                                        req->vuid,
@@ -1961,7 +1837,7 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
 
         if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
            (def_acl = directory_has_default_acl(conn, parent_dir))) {
-               unx_mode = 0777;
+               unx_mode = (0777 & lp_create_mask(SNUM(conn)));
        }
 
        DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
@@ -1974,7 +1850,7 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
         * open_file strips any O_TRUNC flags itself.
         */
 
-       fsp_open = open_file(fsp, conn, req, parent_dir, smb_fname,
+       fsp_open = open_file(fsp, conn, req, parent_dir,
                             flags|flags2, unx_mode, access_mask,
                             open_access_mask);
 
@@ -2006,7 +1882,7 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
 
                lck = get_share_mode_lock(talloc_tos(), id,
                                          conn->connectpath,
-                                         fname, &old_write_time);
+                                         smb_fname, &old_write_time);
 
                if (lck == NULL) {
                        DEBUG(0, ("open_file_ntcreate: Could not get share "
@@ -2095,7 +1971,8 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
           note that GPFS supports it as well - jmcd */
 
        if (fsp->fh->fd != -1) {
-               ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access);
+               int ret_flock;
+               ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
                if(ret_flock == -1 ){
 
                        TALLOC_FREE(lck);
@@ -2176,7 +2053,7 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
        /* Handle strange delete on close create semantics. */
        if (create_options & FILE_DELETE_ON_CLOSE) {
 
-               status = can_set_delete_on_close(fsp, True, new_dos_attributes);
+               status = can_set_delete_on_close(fsp, new_dos_attributes);
 
                if (!NT_STATUS_IS_OK(status)) {
                        /* Remember to delete the mode we just added. */
@@ -2264,30 +2141,15 @@ static NTSTATUS open_file_ntcreate(connection_struct *conn,
  Open a file for for write to ensure that we can fchmod it.
 ****************************************************************************/
 
-NTSTATUS open_file_fchmod(struct smb_request *req, connection_struct *conn,
-                         const char *fname,
-                         SMB_STRUCT_STAT *psbuf, files_struct **result)
+NTSTATUS open_file_fchmod(connection_struct *conn,
+                         struct smb_filename *smb_fname,
+                         files_struct **result)
 {
-       struct smb_filename *smb_fname = NULL;
-       files_struct *fsp = NULL;
-       NTSTATUS status;
-
-       if (!VALID_STAT(*psbuf)) {
+       if (!VALID_STAT(smb_fname->st)) {
                return NT_STATUS_INVALID_PARAMETER;
        }
 
-       status = file_new(req, conn, &fsp);
-       if(!NT_STATUS_IS_OK(status)) {
-               return status;
-       }
-
-       status = create_synthetic_smb_fname_split(talloc_tos(), fname, psbuf,
-                                                 &smb_fname);
-       if (!NT_STATUS_IS_OK(status)) {
-               return status;
-       }
-
-        status = SMB_VFS_CREATE_FILE(
+        return SMB_VFS_CREATE_FILE(
                conn,                                   /* conn */
                NULL,                                   /* req */
                0,                                      /* root_dir_fid */
@@ -2298,39 +2160,12 @@ NTSTATUS open_file_fchmod(struct smb_request *req, connection_struct *conn,
                FILE_OPEN,                              /* create_disposition*/
                0,                                      /* create_options */
                0,                                      /* file_attributes */
-               0,                                      /* oplock_request */
+               INTERNAL_OPEN_ONLY,                     /* oplock_request */
                0,                                      /* allocation_size */
                NULL,                                   /* sd */
                NULL,                                   /* ea_list */
-               &fsp,                                   /* result */
-               NULL);                                  /* psbuf */
-
-       *psbuf = smb_fname->st;
-       TALLOC_FREE(smb_fname);
-
-       /*
-        * This is not a user visible file open.
-        * Don't set a share mode.
-        */
-
-       if (!NT_STATUS_IS_OK(status)) {
-               file_free(req, fsp);
-               return status;
-       }
-
-       *result = fsp;
-       return NT_STATUS_OK;
-}
-
-/****************************************************************************
- Close the fchmod file fd - ensure no locks are lost.
-****************************************************************************/
-
-NTSTATUS close_file_fchmod(struct smb_request *req, files_struct *fsp)
-{
-       NTSTATUS status = fd_close(fsp);
-       file_free(req, fsp);
-       return status;
+               result,                                 /* result */
+               NULL);                                  /* pinfo */
 }
 
 static NTSTATUS mkdir_internal(connection_struct *conn,
@@ -2341,6 +2176,7 @@ static NTSTATUS mkdir_internal(connection_struct *conn,
        char *parent_dir;
        NTSTATUS status;
        bool posix_open = false;
+       bool need_re_stat = false;
 
        if(!CAN_WRITE(conn)) {
                DEBUG(5,("mkdir_internal: failing create on read-only share "
@@ -2362,7 +2198,7 @@ static NTSTATUS mkdir_internal(connection_struct *conn,
                posix_open = true;
                mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
        } else {
-               mode = unix_mode(conn, aDIR, smb_dname->base_name, parent_dir);
+               mode = unix_mode(conn, aDIR, smb_dname, parent_dir);
        }
 
        if (SMB_VFS_MKDIR(conn, smb_dname->base_name, mode) != 0) {
@@ -2395,9 +2231,10 @@ static NTSTATUS mkdir_internal(connection_struct *conn,
        if (lp_inherit_perms(SNUM(conn))) {
                inherit_access_posix_acl(conn, parent_dir,
                                         smb_dname->base_name, mode);
+               need_re_stat = true;
        }
 
-       if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) {
+       if (!posix_open) {
                /*
                 * Check if high bits should have been set,
                 * then (if bits are missing): add them.
@@ -2409,6 +2246,7 @@ static NTSTATUS mkdir_internal(connection_struct *conn,
                        SMB_VFS_CHMOD(conn, smb_dname->base_name,
                                      (smb_dname->st.st_ex_mode |
                                          (mode & ~smb_dname->st.st_ex_mode)));
+                       need_re_stat = true;
                }
        }
 
@@ -2417,6 +2255,15 @@ static NTSTATUS mkdir_internal(connection_struct *conn,
                change_dir_owner_to_parent(conn, parent_dir,
                                           smb_dname->base_name,
                                           &smb_dname->st);
+               need_re_stat = true;
+       }
+
+       if (need_re_stat) {
+               if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
+                       DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
+                         smb_fname_str_dbg(smb_dname), strerror(errno)));
+                       return map_nt_error_from_unix(errno);
+               }
        }
 
        notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
@@ -2449,6 +2296,11 @@ static NTSTATUS open_directory(connection_struct *conn,
 
        SMB_ASSERT(!is_ntfs_stream_smb_fname(smb_dname));
 
+       if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) {
+               /* Ensure we have a directory attribute. */
+               file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
+       }
+
        DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
                 "share_access = 0x%x create_options = 0x%x, "
                 "create_disposition = 0x%x, file_attributes = 0x%x\n",
@@ -2477,8 +2329,8 @@ static NTSTATUS open_directory(connection_struct *conn,
                return status;
        }
 
-       /* We need to support SeSecurityPrivilege for this. */
-       if (access_mask & SEC_FLAG_SYSTEM_SECURITY) {
+       if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
+                       !user_has_privileges(current_user.nt_user_token, &se_security)) {
                DEBUG(10, ("open_directory: open on %s "
                        "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
                        smb_fname_str_dbg(smb_dname)));
@@ -2559,8 +2411,8 @@ static NTSTATUS open_directory(connection_struct *conn,
 
        if (info == FILE_WAS_OPENED) {
                uint32_t access_granted = 0;
-               status = check_open_rights(conn, smb_dname, access_mask,
-                                          &access_granted);
+               status = smbd_check_open_rights(conn, smb_dname, access_mask,
+                                               &access_granted);
 
                /* Were we trying to do a directory open
                 * for delete and didn't get DELETE
@@ -2581,7 +2433,7 @@ static NTSTATUS open_directory(connection_struct *conn,
                }
 
                if (!NT_STATUS_IS_OK(status)) {
-                       DEBUG(10, ("open_directory: check_open_rights on "
+                       DEBUG(10, ("open_directory: smbd_check_open_rights on "
                                "file %s failed with %s\n",
                                smb_fname_str_dbg(smb_dname),
                                nt_errstr(status)));
@@ -2618,14 +2470,15 @@ static NTSTATUS open_directory(connection_struct *conn,
        fsp->sent_oplock_break = NO_BREAK_SENT;
        fsp->is_directory = True;
        fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
-
-       string_set(&fsp->fsp_name, smb_dname->base_name);
+       status = fsp_set_smb_fname(fsp, smb_dname);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
 
        mtimespec = smb_dname->st.st_ex_mtime;
 
        lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
-                                 conn->connectpath, smb_dname->base_name,
-                                 &mtimespec);
+                                 conn->connectpath, smb_dname, &mtimespec);
 
        if (lck == NULL) {
                DEBUG(0, ("open_directory: Could not get share mode lock for "
@@ -2648,7 +2501,7 @@ static NTSTATUS open_directory(connection_struct *conn,
        /* For directories the delete on close bit at open time seems
           always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
        if (create_options & FILE_DELETE_ON_CLOSE) {
-               status = can_set_delete_on_close(fsp, True, 0);
+               status = can_set_delete_on_close(fsp, 0);
                if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
                        TALLOC_FREE(lck);
                        file_free(req, fsp);
@@ -2717,8 +2570,11 @@ void msg_file_was_renamed(struct messaging_context *msg,
        char *frm = (char *)data->data;
        struct file_id id;
        const char *sharepath;
-       const char *newname;
-       size_t sp_len;
+       const char *base_name;
+       const char *stream_name;
+       struct smb_filename *smb_fname = NULL;
+       size_t sp_len, bn_len;
+       NTSTATUS status;
 
        if (data->data == NULL
            || data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
@@ -2730,18 +2586,37 @@ void msg_file_was_renamed(struct messaging_context *msg,
        /* Unpack the message. */
        pull_file_id_24(frm, &id);
        sharepath = &frm[24];
-       newname = sharepath + strlen(sharepath) + 1;
        sp_len = strlen(sharepath);
+       base_name = sharepath + sp_len + 1;
+       bn_len = strlen(base_name);
+       stream_name = sharepath + sp_len + 1 + bn_len + 1;
+
+       /* stream_name must always be NULL if there is no stream. */
+       if (stream_name[0] == '\0') {
+               stream_name = NULL;
+       }
+
+       status = create_synthetic_smb_fname(talloc_tos(), base_name,
+                                           stream_name, NULL, &smb_fname);
+       if (!NT_STATUS_IS_OK(status)) {
+               return;
+       }
 
        DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
                "file_id %s\n",
-                 sharepath, newname, file_id_string_tos(&id)));
+               sharepath, smb_fname_str_dbg(smb_fname),
+               file_id_string_tos(&id)));
 
        for(fsp = file_find_di_first(id); fsp; fsp = file_find_di_next(fsp)) {
                if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
-                       DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
-                               fsp->fnum, fsp->fsp_name, newname ));
-                       string_set(&fsp->fsp_name, newname);
+
+                       DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
+                               fsp->fnum, fsp_str_dbg(fsp),
+                               smb_fname_str_dbg(smb_fname)));
+                       status = fsp_set_smb_fname(fsp, smb_fname);
+                       if (!NT_STATUS_IS_OK(status)) {
+                               goto out;
+                       }
                } else {
                        /* TODO. JRA. */
                        /* Now we have the complete path we can work out if this is
@@ -2752,56 +2627,13 @@ void msg_file_was_renamed(struct messaging_context *msg,
                                fsp->conn->connectpath,
                                sharepath,
                                fsp->fnum,
-                               fsp->fsp_name,
-                               newname ));
+                               fsp_str_dbg(fsp),
+                               smb_fname_str_dbg(smb_fname)));
                }
         }
-}
-
-struct case_semantics_state {
-       connection_struct *conn;
-       bool case_sensitive;
-       bool case_preserve;
-       bool short_case_preserve;
-};
-
-/****************************************************************************
- Restore case semantics.
-****************************************************************************/
-static int restore_case_semantics(struct case_semantics_state *state)
-{
-       state->conn->case_sensitive = state->case_sensitive;
-       state->conn->case_preserve = state->case_preserve;
-       state->conn->short_case_preserve = state->short_case_preserve;
-       return 0;
-}
-
-/****************************************************************************
- Save case semantics.
-****************************************************************************/
-struct case_semantics_state *set_posix_case_semantics(TALLOC_CTX *mem_ctx,
-                                                     connection_struct *conn)
-{
-       struct case_semantics_state *result;
-
-       if (!(result = talloc(mem_ctx, struct case_semantics_state))) {
-               DEBUG(0, ("talloc failed\n"));
-               return NULL;
-       }
-
-       result->conn = conn;
-       result->case_sensitive = conn->case_sensitive;
-       result->case_preserve = conn->case_preserve;
-       result->short_case_preserve = conn->short_case_preserve;
-
-       /* Set to POSIX. */
-       conn->case_sensitive = True;
-       conn->case_preserve = True;
-       conn->short_case_preserve = True;
-
-       talloc_set_destructor(result, restore_case_semantics);
-
-       return result;
+ out:
+       TALLOC_FREE(smb_fname);
+       return;
 }
 
 /*
@@ -2910,7 +2742,7 @@ NTSTATUS open_streams_for_delete(connection_struct *conn,
                }
 
                DEBUG(10, ("Closing stream # %d, %s\n", i,
-                          streams[i]->fsp_name));
+                          fsp_str_dbg(streams[i])));
                close_file(NULL, streams[i], NORMAL_CLOSE);
        }
 
@@ -2994,9 +2826,7 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
 
        /* Setting FILE_SHARE_DELETE is the hint. */
 
-       if (lp_acl_check_permissions(SNUM(conn))
-           && (create_disposition != FILE_CREATE)
-           && (share_access & FILE_SHARE_DELETE)
+       if ((create_disposition != FILE_CREATE)
            && (access_mask & DELETE_ACCESS)
            && (!(can_delete_file_in_directory(conn, smb_fname) ||
                 can_access_file_acl(conn, smb_fname, DELETE_ACCESS)))) {
@@ -3007,29 +2837,14 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
                goto fail;
        }
 
-#if 0
-       /* We need to support SeSecurityPrivilege for this. */
        if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
-           !user_has_privileges(current_user.nt_user_token,
-                                &se_security)) {
-               status = NT_STATUS_PRIVILEGE_NOT_HELD;
-               goto fail;
-       }
-#else
-       /* We need to support SeSecurityPrivilege for this. */
-       if (access_mask & SEC_FLAG_SYSTEM_SECURITY) {
-               status = NT_STATUS_PRIVILEGE_NOT_HELD;
-               goto fail;
-       }
-       /* Don't allow a SACL set from an NTtrans create until we
-        * support SeSecurityPrivilege. */
-       if (!VALID_STAT(smb_fname->st) &&
-                       lp_nt_acl_support(SNUM(conn)) &&
-                       sd && (sd->sacl != NULL)) {
+                       !user_has_privileges(current_user.nt_user_token, &se_security)) {
+               DEBUG(10, ("create_file_unixpath:: open on %s "
+                       "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
+                       smb_fname_str_dbg(smb_fname)));
                status = NT_STATUS_PRIVILEGE_NOT_HELD;
                goto fail;
        }
-#endif
 
        if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
            && is_ntfs_stream_smb_fname(smb_fname)
@@ -3125,6 +2940,11 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
                        goto fail;
                }
 
+               status = fsp_set_smb_fname(fsp, smb_fname);
+               if (!NT_STATUS_IS_OK(status)) {
+                       goto fail;
+               }
+
                /*
                 * We're opening the stream element of a base_fsp
                 * we already opened. Set up the base_fsp pointer.
@@ -3135,7 +2955,6 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
 
                status = open_file_ntcreate(conn,
                                            req,
-                                           smb_fname,
                                            access_mask,
                                            share_access,
                                            create_disposition,
@@ -3225,13 +3044,13 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
 
        if ((ea_list != NULL) &&
            ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN))) {
-               status = set_ea(conn, fsp, smb_fname, ea_list);
+               status = set_ea(conn, fsp, fsp->fsp_name, ea_list);
                if (!NT_STATUS_IS_OK(status)) {
                        goto fail;
                }
        }
 
-       if (!fsp->is_directory && S_ISDIR(smb_fname->st.st_ex_mode)) {
+       if (!fsp->is_directory && S_ISDIR(fsp->fsp_name->st.st_ex_mode)) {
                status = NT_STATUS_ACCESS_DENIED;
                goto fail;
        }
@@ -3239,7 +3058,7 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
        /* Save the requested allocation size. */
        if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
                if (allocation_size
-                   && (allocation_size > smb_fname->st.st_ex_size)) {
+                   && (allocation_size > fsp->fsp_name->st.st_ex_size)) {
                        fsp->initial_allocation_size = smb_roundup(
                                fsp->conn, allocation_size);
                        if (fsp->is_directory) {
@@ -3254,7 +3073,7 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
                        }
                } else {
                        fsp->initial_allocation_size = smb_roundup(
-                               fsp->conn, (uint64_t)smb_fname->st.st_ex_size);
+                               fsp->conn, (uint64_t)fsp->fsp_name->st.st_ex_size);
                }
        }
 
@@ -3264,9 +3083,9 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
        if (pinfo != NULL) {
                *pinfo = info;
        }
-       if ((fsp->fh != NULL) && (fsp->fh->fd != -1)) {
-               SMB_VFS_FSTAT(fsp, &smb_fname->st);
-       }
+
+       smb_fname->st = fsp->fsp_name->st;
+
        return NT_STATUS_OK;
 
  fail:
@@ -3296,7 +3115,8 @@ static NTSTATUS create_file_unixpath(connection_struct *conn,
 NTSTATUS get_relative_fid_filename(connection_struct *conn,
                                   struct smb_request *req,
                                   uint16_t root_dir_fid,
-                                  struct smb_filename *smb_fname)
+                                  const struct smb_filename *smb_fname,
+                                  struct smb_filename **smb_fname_out)
 {
        files_struct *dir_fsp;
        char *parent_fname = NULL;
@@ -3315,6 +3135,11 @@ NTSTATUS get_relative_fid_filename(connection_struct *conn,
                goto out;
        }
 
+       if (is_ntfs_stream_smb_fname(dir_fsp->fsp_name)) {
+               status = NT_STATUS_INVALID_HANDLE;
+               goto out;
+       }
+
        if (!dir_fsp->is_directory) {
 
                /*
@@ -3338,7 +3163,7 @@ NTSTATUS get_relative_fid_filename(connection_struct *conn,
                goto out;
        }
 
-       if (ISDOT(dir_fsp->fsp_name)) {
+       if (ISDOT(dir_fsp->fsp_name->base_name)) {
                /*
                 * We're at the toplevel dir, the final file name
                 * must not contain ./, as this is filtered out
@@ -3351,7 +3176,7 @@ NTSTATUS get_relative_fid_filename(connection_struct *conn,
                        goto out;
                }
        } else {
-               size_t dir_name_len = strlen(dir_fsp->fsp_name);
+               size_t dir_name_len = strlen(dir_fsp->fsp_name->base_name);
 
                /*
                 * Copy in the base directory name.
@@ -3363,7 +3188,7 @@ NTSTATUS get_relative_fid_filename(connection_struct *conn,
                        status = NT_STATUS_NO_MEMORY;
                        goto out;
                }
-               memcpy(parent_fname, dir_fsp->fsp_name,
+               memcpy(parent_fname, dir_fsp->fsp_name->base_name,
                    dir_name_len+1);
 
                /*
@@ -3379,16 +3204,23 @@ NTSTATUS get_relative_fid_filename(connection_struct *conn,
                }
        }
 
-       new_base_name = talloc_asprintf(smb_fname, "%s%s", parent_fname,
+       new_base_name = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
                                        smb_fname->base_name);
        if (new_base_name == NULL) {
                status = NT_STATUS_NO_MEMORY;
                goto out;
        }
 
-       TALLOC_FREE(smb_fname->base_name);
-       smb_fname->base_name = new_base_name;
-       status = NT_STATUS_OK;
+       status = filename_convert(req,
+                               conn,
+                               req->flags2 & FLAGS2_DFS_PATHNAMES,
+                               new_base_name,
+                               0,
+                               NULL,
+                               smb_fname_out);
+       if (!NT_STATUS_IS_OK(status)) {
+               goto out;
+       }
 
  out:
        TALLOC_FREE(parent_fname);
@@ -3435,11 +3267,13 @@ NTSTATUS create_file_default(connection_struct *conn,
         */
 
        if (root_dir_fid != 0) {
+               struct smb_filename *smb_fname_out = NULL;
                status = get_relative_fid_filename(conn, req, root_dir_fid,
-                                                  smb_fname);
+                                                  smb_fname, &smb_fname_out);
                if (!NT_STATUS_IS_OK(status)) {
                        goto fail;
                }
+               smb_fname = smb_fname_out;
        }
 
        /*
@@ -3447,16 +3281,9 @@ NTSTATUS create_file_default(connection_struct *conn,
         */
 
        if (is_ntfs_stream_smb_fname(smb_fname)) {
-               char *fname = NULL;
                enum FAKE_FILE_TYPE fake_file_type;
 
-               status = get_full_smb_filename(talloc_tos(), smb_fname,
-                                              &fname);
-               if (!NT_STATUS_IS_OK(status)) {
-                       goto fail;
-               }
-
-               fake_file_type = is_fake_file(fname);
+               fake_file_type = is_fake_file(smb_fname);
 
                if (fake_file_type != FAKE_FILE_TYPE_NONE) {
 
@@ -3472,9 +3299,8 @@ NTSTATUS create_file_default(connection_struct *conn,
                         * close it
                         */
                        status = open_fake_file(req, conn, req->vuid,
-                                               fake_file_type, fname,
+                                               fake_file_type, smb_fname,
                                                access_mask, &fsp);
-                       TALLOC_FREE(fname);
                        if (!NT_STATUS_IS_OK(status)) {
                                goto fail;
                        }
@@ -3482,7 +3308,6 @@ NTSTATUS create_file_default(connection_struct *conn,
                        ZERO_STRUCT(smb_fname->st);
                        goto done;
                }
-               TALLOC_FREE(fname);
 
                if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
                        status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
@@ -3490,13 +3315,6 @@ NTSTATUS create_file_default(connection_struct *conn,
                }
        }
 
-       /* All file access must go through check_name() */
-
-       status = check_name(conn, smb_fname->base_name);
-       if (!NT_STATUS_IS_OK(status)) {
-               goto fail;
-       }
-
        status = create_file_unixpath(
                conn, req, smb_fname, access_mask, share_access,
                create_disposition, create_options, file_attributes,