r21064: The core of this patch is
[samba.git] / source3 / smbd / open.c
index 2e4091d937e620baed6062397ae0454161a291f8..529677a5f3565ff047dd99c5fd66e228e7a16dbe 100644 (file)
@@ -38,24 +38,29 @@ struct deferred_open_record {
  fd support routines - attempt to do a dos_open.
 ****************************************************************************/
 
-static int fd_open(struct connection_struct *conn,
-                       const char *fname, 
-                       int flags,
-                       mode_t mode)
+static BOOL fd_open(struct connection_struct *conn,
+                   const char *fname, 
+                   files_struct *fsp,
+                   int flags,
+                   mode_t mode)
 {
-       int fd;
+       int sav;
+
 #ifdef O_NOFOLLOW
        if (!lp_symlinks(SNUM(conn))) {
                flags |= O_NOFOLLOW;
        }
 #endif
 
-       fd = SMB_VFS_OPEN(conn,fname,flags,mode);
+       fsp->fh->fd = SMB_VFS_OPEN(conn,fname,fsp,flags,mode);
+       sav = errno;
 
-       DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n", fname,
-               flags, (int)mode, fd, (fd == -1) ? strerror(errno) : "" ));
+       DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
+                   fname, flags, (int)mode, fsp->fh->fd,
+               (fsp->fh->fd == -1) ? strerror(errno) : "" ));
 
-       return fd;
+       errno = sav;
+       return fsp->fh->fd != -1;
 }
 
 /****************************************************************************
@@ -63,7 +68,7 @@ static int fd_open(struct connection_struct *conn,
 ****************************************************************************/
 
 int fd_close(struct connection_struct *conn,
-               files_struct *fsp)
+            files_struct *fsp)
 {
        if (fsp->fh->fd == -1) {
                return 0; /* What we used to call a stat open. */
@@ -79,113 +84,127 @@ int fd_close(struct connection_struct *conn,
  Do this by fd if possible.
 ****************************************************************************/
 
-void change_owner_to_parent(connection_struct *conn,
-                               files_struct *fsp,
-                               const char *fname,
-                               SMB_STRUCT_STAT *psbuf)
+static void change_file_owner_to_parent(connection_struct *conn,
+                                       const char *inherit_from_dir,
+                                       files_struct *fsp)
 {
-       const char *parent_path = parent_dirname(fname);
        SMB_STRUCT_STAT parent_st;
        int ret;
 
-       ret = SMB_VFS_STAT(conn, parent_path, &parent_st);
+       ret = SMB_VFS_STAT(conn, inherit_from_dir, &parent_st);
        if (ret == -1) {
-               DEBUG(0,("change_owner_to_parent: failed to stat parent "
+               DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
                         "directory %s. Error was %s\n",
-                        parent_path, strerror(errno) ));
+                        inherit_from_dir, strerror(errno) ));
                return;
        }
 
-       if (fsp && fsp->fh->fd != -1) {
-               become_root();
-               ret = SMB_VFS_FCHOWN(fsp, fsp->fh->fd, parent_st.st_uid, (gid_t)-1);
-               unbecome_root();
-               if (ret == -1) {
-                       DEBUG(0,("change_owner_to_parent: failed to fchown "
-                                "file %s to parent directory uid %u. Error "
-                                "was %s\n", fname,
-                                (unsigned int)parent_st.st_uid,
-                                strerror(errno) ));
-               }
+       become_root();
+       ret = SMB_VFS_FCHOWN(fsp, fsp->fh->fd, parent_st.st_uid, (gid_t)-1);
+       unbecome_root();
+       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,
+                        (unsigned int)parent_st.st_uid,
+                        strerror(errno) ));
+       }
 
-               DEBUG(10,("change_owner_to_parent: changed new file %s to "
-                         "parent directory uid %u.\n", fname,
-                         (unsigned int)parent_st.st_uid ));
+       DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
+                 "parent directory uid %u.\n", fsp->fsp_name,
+                 (unsigned int)parent_st.st_uid ));
+}
 
-       } else {
-               /* We've already done an lstat into psbuf, and we know it's a
-                  directory. If we can cd into the directory and the dev/ino
-                  are the same then we can safely chown without races as
-                  we're locking the directory in place by being in it.  This
-                  should work on any UNIX (thanks tridge :-). JRA.
-               */
-
-               pstring saved_dir;
-               SMB_STRUCT_STAT sbuf;
-
-               if (!vfs_GetWd(conn,saved_dir)) {
-                       DEBUG(0,("change_owner_to_parent: failed to get "
-                                "current working directory\n"));
-                       return;
-               }
+static void change_dir_owner_to_parent(connection_struct *conn,
+                                      const char *inherit_from_dir,
+                                      const char *fname,
+                                      SMB_STRUCT_STAT *psbuf)
+{
+       pstring saved_dir;
+       SMB_STRUCT_STAT sbuf;
+       SMB_STRUCT_STAT parent_st;
+       int ret;
 
-               /* Chdir into the new path. */
-               if (vfs_ChDir(conn, fname) == -1) {
-                       DEBUG(0,("change_owner_to_parent: failed to change "
-                                "current working directory to %s. Error "
-                                "was %s\n", fname, strerror(errno) ));
-                       goto out;
-               }
+       ret = SMB_VFS_STAT(conn, inherit_from_dir, &parent_st);
+       if (ret == -1) {
+               DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
+                        "directory %s. Error was %s\n",
+                        inherit_from_dir, strerror(errno) ));
+               return;
+       }
 
-               if (SMB_VFS_STAT(conn,".",&sbuf) == -1) {
-                       DEBUG(0,("change_owner_to_parent: failed to stat "
-                                "directory '.' (%s) Error was %s\n",
-                                fname, strerror(errno)));
-                       goto out;
-               }
+       /* We've already done an lstat into psbuf, and we know it's a
+          directory. If we can cd into the directory and the dev/ino
+          are the same then we can safely chown without races as
+          we're locking the directory in place by being in it.  This
+          should work on any UNIX (thanks tridge :-). JRA.
+       */
 
-               /* Ensure we're pointing at the same place. */
-               if (sbuf.st_dev != psbuf->st_dev ||
-                   sbuf.st_ino != psbuf->st_ino ||
-                   sbuf.st_mode != psbuf->st_mode ) {
-                       DEBUG(0,("change_owner_to_parent: "
-                                "device/inode/mode on directory %s changed. "
-                                "Refusing to chown !\n", fname ));
-                       goto out;
-               }
+       if (!vfs_GetWd(conn,saved_dir)) {
+               DEBUG(0,("change_dir_owner_to_parent: failed to get "
+                        "current working directory\n"));
+               return;
+       }
 
-               become_root();
-               ret = SMB_VFS_CHOWN(conn, ".", parent_st.st_uid, (gid_t)-1);
-               unbecome_root();
-               if (ret == -1) {
-                       DEBUG(10,("change_owner_to_parent: failed to chown "
-                                 "directory %s to parent directory uid %u. "
-                                 "Error was %s\n", fname,
-                                 (unsigned int)parent_st.st_uid, strerror(errno) ));
-                       goto out;
-               }
+       /* Chdir into the new path. */
+       if (vfs_ChDir(conn, fname) == -1) {
+               DEBUG(0,("change_dir_owner_to_parent: failed to change "
+                        "current working directory to %s. Error "
+                        "was %s\n", fname, strerror(errno) ));
+               goto out;
+       }
 
-               DEBUG(10,("change_owner_to_parent: changed ownership of new "
-                         "directory %s to parent directory uid %u.\n",
-                         fname, (unsigned int)parent_st.st_uid ));
+       if (SMB_VFS_STAT(conn,".",&sbuf) == -1) {
+               DEBUG(0,("change_dir_owner_to_parent: failed to stat "
+                        "directory '.' (%s) Error was %s\n",
+                        fname, strerror(errno)));
+               goto out;
+       }
 
-  out:
+       /* Ensure we're pointing at the same place. */
+       if (sbuf.st_dev != psbuf->st_dev ||
+           sbuf.st_ino != psbuf->st_ino ||
+           sbuf.st_mode != psbuf->st_mode ) {
+               DEBUG(0,("change_dir_owner_to_parent: "
+                        "device/inode/mode on directory %s changed. "
+                        "Refusing to chown !\n", fname ));
+               goto out;
+       }
 
-               vfs_ChDir(conn,saved_dir);
+       become_root();
+       ret = SMB_VFS_CHOWN(conn, ".", parent_st.st_uid, (gid_t)-1);
+       unbecome_root();
+       if (ret == -1) {
+               DEBUG(10,("change_dir_owner_to_parent: failed to chown "
+                         "directory %s to parent directory uid %u. "
+                         "Error was %s\n", fname,
+                         (unsigned int)parent_st.st_uid, strerror(errno) ));
+               goto out;
        }
+
+       DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
+                 "directory %s to parent directory uid %u.\n",
+                 fname, (unsigned int)parent_st.st_uid ));
+
+ out:
+
+       vfs_ChDir(conn,saved_dir);
 }
 
 /****************************************************************************
  Open a file.
 ****************************************************************************/
 
-static BOOL open_file(files_struct *fsp,
-                       connection_struct *conn,
-                       const char *fname,
-                       SMB_STRUCT_STAT *psbuf,
-                       int flags,
-                       mode_t unx_mode,
-                       uint32 access_mask)
+static NTSTATUS open_file(files_struct *fsp,
+                         connection_struct *conn,
+                         const char *parent_dir,
+                         const char *name,
+                         const char *path,
+                         SMB_STRUCT_STAT *psbuf,
+                         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. */
 {
        int accmode = (flags & O_ACCMODE);
        int local_flags = flags;
@@ -209,8 +228,8 @@ static BOOL open_file(files_struct *fsp,
        if (!CAN_WRITE(conn)) {
                /* It's a read-only share - fail if we wanted to write. */
                if(accmode != O_RDONLY) {
-                       DEBUG(3,("Permission denied opening %s\n",fname));
-                       return False;
+                       DEBUG(3,("Permission denied opening %s\n", path));
+                       return NT_STATUS_ACCESS_DENIED;
                } else if(flags & O_CREAT) {
                        /* We don't want to write - but we must make sure that
                           O_CREAT doesn't create the file if we have write
@@ -235,12 +254,12 @@ static BOOL open_file(files_struct *fsp,
 
        if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
                DEBUG(10,("open_file: truncate requested on read-only open "
-                         "for file %s\n",fname ));
+                         "for file %s\n", path));
                local_flags = (flags & ~O_ACCMODE)|O_RDWR;
        }
 
-       if ((access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
-           (local_flags & O_CREAT) ||
+       if ((open_access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
+           (!file_existed && (local_flags & O_CREAT)) ||
            ((local_flags & O_TRUNC) == O_TRUNC) ) {
 
                /*
@@ -264,23 +283,34 @@ static BOOL open_file(files_struct *fsp,
 
                /* Don't create files with Microsoft wildcard characters. */
                if ((local_flags & O_CREAT) && !file_existed &&
-                   ms_has_wild(fname))  {
-                       set_saved_ntstatus(NT_STATUS_OBJECT_NAME_INVALID);
-                       return False;
+                   ms_has_wild(path))  {
+                       return NT_STATUS_OBJECT_NAME_INVALID;
                }
 
                /* Actually do the open */
-               fsp->fh->fd = fd_open(conn, fname, local_flags, unx_mode);
-               if (fsp->fh->fd == -1)  {
+               if (!fd_open(conn, path, fsp, local_flags, unx_mode)) {
                        DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
                                 "(flags=%d)\n",
-                                fname,strerror(errno),local_flags,flags));
-                       return False;
+                                path,strerror(errno),local_flags,flags));
+                       return map_nt_error_from_unix(errno);
                }
 
-               /* Inherit the ACL if the file was created. */
                if ((local_flags & O_CREAT) && !file_existed) {
-                       inherit_access_acl(conn, fname, unx_mode);
+
+                       /* Inherit the ACL if required */
+                       if (lp_inherit_perms(SNUM(conn))) {
+                               inherit_access_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_action(conn, parent_dir, name, -1,
+                                     NOTIFY_ACTION_ADDED);
                }
 
        } else {
@@ -291,20 +321,21 @@ static BOOL open_file(files_struct *fsp,
                int ret;
 
                if (fsp->fh->fd == -1) {
-                       ret = SMB_VFS_STAT(conn, fname, psbuf);
+                       ret = SMB_VFS_STAT(conn, path, psbuf);
                } else {
                        ret = SMB_VFS_FSTAT(fsp,fsp->fh->fd,psbuf);
                        /* If we have an fd, this stat should succeed. */
                        if (ret == -1) {
                                DEBUG(0,("Error doing fstat on open file %s "
-                                        "(%s)\n", fname,strerror(errno) ));
+                                        "(%s)\n", path,strerror(errno) ));
                        }
                }
 
                /* For a non-io open, this stat failing means file not found. JRA */
                if (ret == -1) {
+                       NTSTATUS status = map_nt_error_from_unix(errno);
                        fd_close(conn, fsp);
-                       return False;
+                       return status;
                }
        }
 
@@ -317,7 +348,7 @@ static BOOL open_file(files_struct *fsp,
        if(S_ISDIR(psbuf->st_mode)) {
                fd_close(conn, fsp);
                errno = EISDIR;
-               return False;
+               return NT_STATUS_FILE_IS_A_DIRECTORY;
        }
 
        fsp->mode = psbuf->st_mode;
@@ -330,28 +361,31 @@ static BOOL open_file(files_struct *fsp,
        if (!CAN_WRITE(conn)) {
                fsp->can_write = False;
        } else {
-               fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ? True : False;
+               fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ?
+                       True : False;
        }
        fsp->print_file = False;
        fsp->modified = False;
        fsp->sent_oplock_break = NO_BREAK_SENT;
        fsp->is_directory = False;
        fsp->is_stat = False;
-       if (conn->aio_write_behind_list &&
-           is_in_path(fname, conn->aio_write_behind_list, conn->case_sensitive)) {
+       if (conn->aio_write_behind_list
+           && is_in_path(path, conn->aio_write_behind_list,
+                         conn->case_sensitive)) {
                fsp->aio_write_behind = True;
        }
 
-       string_set(&fsp->fsp_name,fname);
+       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",
-                *current_user_info.smb_name ? current_user_info.smb_name : conn->user,fsp->fsp_name,
+                *current_user_info.smb_name ?
+                current_user_info.smb_name : conn->user,fsp->fsp_name,
                 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
                 conn->num_files_open + 1));
 
        errno = 0;
-       return True;
+       return NT_STATUS_OK;
 }
 
 /*******************************************************************
@@ -468,8 +502,8 @@ static void validate_my_share_entries(int num,
        if (is_deferred_open_entry(share_entry) &&
            !open_was_deferred(share_entry->op_mid)) {
                pstring str;
-               DEBUG(0, ("Got a deferred entry without a request: "
-                         "PANIC: %s\n", share_mode_str(num, share_entry)));
+               pstr_sprintf(str, "Got a deferred entry without a request: "
+                            "PANIC: %s\n", share_mode_str(num, share_entry));
                smb_panic(str);
        }
 
@@ -609,18 +643,23 @@ static BOOL is_delete_request(files_struct *fsp) {
  */
 
 static BOOL delay_for_oplocks(struct share_mode_lock *lck,
-                               files_struct *fsp,
-                               int pass_number,
-                               int oplock_request)
+                             files_struct *fsp,
+                             int pass_number,
+                             int oplock_request)
 {
        int i;
        struct share_mode_entry *exclusive = NULL;
        BOOL valid_entry = False;
        BOOL delay_it = False;
        BOOL have_level2 = False;
+       BOOL ret;
+       char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
 
-       if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
+       if (oplock_request & INTERNAL_OPEN_ONLY) {
                fsp->oplock_type = NO_OPLOCK;
+       }
+
+       if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
                return False;
        }
 
@@ -678,34 +717,36 @@ static BOOL delay_for_oplocks(struct share_mode_lock *lck,
                fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
        }
 
-       if (delay_it) {
-               BOOL ret;
-               char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
+       if (!delay_it) {
+               return False;
+       }
+
+       /*
+        * Send a break message to the oplock holder and delay the open for
+        * our client.
+        */
 
-               DEBUG(10, ("Sending break request to PID %s\n",
-                          procid_str_static(&exclusive->pid)));
-               exclusive->op_mid = get_current_mid();
+       DEBUG(10, ("Sending break request to PID %s\n",
+                  procid_str_static(&exclusive->pid)));
+       exclusive->op_mid = get_current_mid();
 
-               /* Create the message. */
-               share_mode_entry_to_message(msg, exclusive);
+       /* Create the message. */
+       share_mode_entry_to_message(msg, exclusive);
 
-               /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We don't
-                  want this set in the share mode struct pointed to by lck. */
+       /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
+          don't want this set in the share mode struct pointed to by lck. */
 
-               if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
-                       SSVAL(msg,6,exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
-               }
+       if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
+               SSVAL(msg,6,exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
+       }
 
-               become_root();
-               ret = message_send_pid(exclusive->pid, MSG_SMB_BREAK_REQUEST,
-                                      msg, MSG_SMB_SHARE_MODE_ENTRY_SIZE, True);
-               unbecome_root();
-               if (!ret) {
-                       DEBUG(3, ("Could not send oplock break message\n"));
-               }
+       ret = message_send_pid(exclusive->pid, MSG_SMB_BREAK_REQUEST,
+                              msg, MSG_SMB_SHARE_MODE_ENTRY_SIZE, True);
+       if (!ret) {
+               DEBUG(3, ("Could not send oplock break message\n"));
        }
 
-       return delay_it;
+       return True;
 }
 
 static BOOL request_timed_out(struct timeval request_time,
@@ -769,40 +810,18 @@ static void defer_open(struct share_mode_lock *lck,
        srv_defer_sign_response(mid);
 }
 
-/****************************************************************************
- Set a kernel flock on a file for NFS interoperability.
- This requires a patch to Linux.
-****************************************************************************/
-
-static void kernel_flock(files_struct *fsp, uint32 share_mode)
-{
-#if HAVE_KERNEL_SHARE_MODES
-       int kernel_mode = 0;
-       if (share_mode == FILE_SHARE_WRITE) {
-               kernel_mode = LOCK_MAND|LOCK_WRITE;
-       } else if (share_mode == FILE_SHARE_READ) {
-               kernel_mode = LOCK_MAND|LOCK_READ;
-       } else if (share_mode == FILE_SHARE_NONE) {
-               kernel_mode = LOCK_MAND;
-       }
-       if (kernel_mode) {
-               flock(fsp->fh->fd, kernel_mode);
-       }
-#endif
-       ;
-}
 
 /****************************************************************************
  On overwrite open ensure that the attributes match.
 ****************************************************************************/
 
 static BOOL open_match_attributes(connection_struct *conn,
-                               const char *path,
-                               uint32 old_dos_attr,
-                               uint32 new_dos_attr,
-                               mode_t existing_unx_mode,
-                               mode_t new_unx_mode,
-                               mode_t *returned_unx_mode)
+                                 const char *path,
+                                 uint32 old_dos_attr,
+                                 uint32 new_dos_attr,
+                                 mode_t existing_unx_mode,
+                                 mode_t new_unx_mode,
+                                 mode_t *returned_unx_mode)
 {
        uint32 noarch_old_dos_attr, noarch_new_dos_attr;
 
@@ -894,8 +913,8 @@ static files_struct *fcb_or_dos_open(connection_struct *conn,
        }
 
        /* We need to duplicate this fsp. */
-       dup_fsp = dup_file_fsp(fsp, access_mask, share_access, create_options);
-       if (!dup_fsp) {
+       if (!NT_STATUS_IS_OK(dup_file_fsp(fsp, access_mask, share_access,
+                                         create_options, &dup_fsp))) {
                return NULL;
        }
 
@@ -907,10 +926,10 @@ static files_struct *fcb_or_dos_open(connection_struct *conn,
 ****************************************************************************/
 
 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 *paccess_mask,
+                                uint32 *pshare_mode,
+                                uint32 *pcreate_disposition,
+                                uint32 *pcreate_options)
 {
        uint32 access_mask;
        uint32 share_mode;
@@ -1081,17 +1100,18 @@ static void schedule_defer_open(struct share_mode_lock *lck, struct timeval requ
  Open a file with a share mode.
 ****************************************************************************/
 
-files_struct *open_file_ntcreate(connection_struct *conn,
-                                const char *fname,
-                                SMB_STRUCT_STAT *psbuf,
-                                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. */
-                                uint32 create_options,         /* options such as delete on close. */
-                                uint32 new_dos_attributes,     /* attributes used for new file. */
-                                int oplock_request,            /* internal Samba oplock codes. */
-                                                               /* Information (FILE_EXISTS etc.) */
-                                int *pinfo)
+NTSTATUS open_file_ntcreate(connection_struct *conn,
+                           const char *fname,
+                           SMB_STRUCT_STAT *psbuf,
+                           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. */
+                           uint32 create_options,      /* options such as delete on close. */
+                           uint32 new_dos_attributes,  /* attributes used for new file. */
+                           int oplock_request,         /* internal Samba oplock codes. */
+                                                       /* Information (FILE_EXISTS etc.) */
+                           int *pinfo,
+                           files_struct **result)
 {
        int flags=0;
        int flags2=0;
@@ -1099,7 +1119,7 @@ files_struct *open_file_ntcreate(connection_struct *conn,
        BOOL def_acl = False;
        SMB_DEV_T dev = 0;
        SMB_INO_T inode = 0;
-       BOOL fsp_open = False;
+       NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
        files_struct *fsp = NULL;
        mode_t new_unx_mode = (mode_t)0;
        mode_t unx_mode = (mode_t)0;
@@ -1109,7 +1129,11 @@ files_struct *open_file_ntcreate(connection_struct *conn,
        uint16 mid = get_current_mid();
        struct timeval request_time = timeval_zero();
        struct share_mode_lock *lck = NULL;
+       uint32 open_access_mask = access_mask;
        NTSTATUS status;
+       int ret_flock;
+       char *parent_dir;
+       const char *newname;
 
        if (conn->printer) {
                /* 
@@ -1123,12 +1147,18 @@ files_struct *open_file_ntcreate(connection_struct *conn,
 
                DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n", fname));
 
-               return print_fsp_open(conn, fname);
+               return print_fsp_open(conn, fname, result);
+       }
+
+       if (!parent_dirname_talloc(tmp_talloc_ctx(), fname, &parent_dir,
+                                  &newname)) {
+               return NT_STATUS_NO_MEMORY;
        }
 
        /* 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, True);
+       unx_mode = unix_mode(conn, new_dos_attributes | aARCH, fname,
+                            parent_dir);
 
        DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
                   "access_mask=0x%x share_access=0x%x "
@@ -1161,8 +1191,9 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                remove_deferred_open_smb_message(mid);
        }
 
-       if (!check_name(fname,conn)) {
-               return NULL;
+       status = check_name(conn, fname);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
        } 
 
        new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
@@ -1180,12 +1211,13 @@ files_struct *open_file_ntcreate(connection_struct *conn,
        /* this is for OS/2 long file names - say we don't support them */
        if (!lp_posix_pathnames() && strstr(fname,".+,;=[].")) {
                /* OS/2 Workplace shell fix may be main code stream in a later
-                * release. */ 
-               set_saved_error_triple(ERRDOS, ERRcannotopen,
-                                      NT_STATUS_OBJECT_NAME_NOT_FOUND);
+                * release. */
                DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
                         "supported.\n"));
-               return NULL;
+               if (use_nt_status()) {
+                       return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+               }
+               return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
        }
 
        switch( create_disposition ) {
@@ -1213,9 +1245,8 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                                DEBUG(5,("open_file_ntcreate: FILE_OPEN "
                                         "requested for file %s and file "
                                         "doesn't exist.\n", fname ));
-                               set_saved_ntstatus(NT_STATUS_OBJECT_NAME_NOT_FOUND);
                                errno = ENOENT;
-                               return NULL;
+                               return NT_STATUS_OBJECT_NAME_NOT_FOUND;
                        }
                        break;
 
@@ -1226,9 +1257,8 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                                DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
                                         "requested for file %s and file "
                                         "doesn't exist.\n", fname ));
-                               set_saved_ntstatus(NT_STATUS_OBJECT_NAME_NOT_FOUND);
                                errno = ENOENT;
-                               return NULL;
+                               return NT_STATUS_OBJECT_NAME_NOT_FOUND;
                        }
                        flags2 |= O_TRUNC;
                        break;
@@ -1245,7 +1275,7 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                                } else {
                                        errno = EEXIST;
                                }
-                               return NULL;
+                               return map_nt_error_from_unix(errno);
                        }
                        flags2 |= (O_CREAT|O_EXCL);
                        break;
@@ -1257,8 +1287,7 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                        break;
 
                default:
-                       set_saved_ntstatus(NT_STATUS_INVALID_PARAMETER);
-                       return NULL;
+                       return NT_STATUS_INVALID_PARAMETER;
        }
 
        /* We only care about matching attributes on file exists and
@@ -1277,13 +1306,13 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                                 (unsigned int)psbuf->st_mode,
                                 (unsigned int)unx_mode ));
                        errno = EACCES;
-                       return NULL;
+                       return NT_STATUS_ACCESS_DENIED;
                }
        }
 
        /* This is a nasty hack - must fix... JRA. */
        if (access_mask == MAXIMUM_ALLOWED_ACCESS) {
-               access_mask = FILE_GENERIC_ALL;
+               open_access_mask = access_mask = FILE_GENERIC_ALL;
        }
 
        /*
@@ -1291,6 +1320,11 @@ files_struct *open_file_ntcreate(connection_struct *conn,
         */
 
        se_map_generic(&access_mask, &file_generic_mapping);
+       open_access_mask = access_mask;
+
+       if (flags2 & O_TRUNC) {
+               open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
+       }
 
        DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
                   "access_mask=0x%x\n", fname, access_mask ));
@@ -1301,7 +1335,15 @@ files_struct *open_file_ntcreate(connection_struct *conn,
         */
 
        if (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) {
-               flags = O_RDWR;
+               /* DENY_DOS opens are always underlying read-write on the
+                  file handle, no matter what the requested access mask
+                   says. */
+               if ((create_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
+                       access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|FILE_READ_EA|FILE_EXECUTE)) {
+                       flags = O_RDWR;
+               } else {
+                       flags = O_WRONLY;
+               }
        } else {
                flags = O_RDONLY;
        }
@@ -1334,21 +1376,22 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                DEBUG(5,("open_file_ntcreate: write access requested for "
                         "file %s on read only %s\n",
                         fname, !CAN_WRITE(conn) ? "share" : "file" ));
-               set_saved_ntstatus(NT_STATUS_ACCESS_DENIED);
                errno = EACCES;
-               return NULL;
+               return NT_STATUS_ACCESS_DENIED;
        }
 
-       fsp = file_new(conn);
-       if(!fsp) {
-               return NULL;
+       status = file_new(conn, &fsp);
+       if(!NT_STATUS_IS_OK(status)) {
+               return status;
        }
 
        fsp->dev = psbuf->st_dev;
        fsp->inode = psbuf->st_ino;
        fsp->share_access = share_access;
        fsp->fh->private_options = create_options;
-       fsp->access_mask = access_mask;
+       fsp->access_mask = open_access_mask; /* We change this to the
+                                             * requested access_mask after
+                                             * the open is done. */
        /* Ensure no SAMBA_PRIVATE bits can be set. */
        fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
 
@@ -1361,14 +1404,13 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                inode = psbuf->st_ino;
 
                lck = get_share_mode_lock(NULL, dev, inode,
-                                       conn->connectpath,
-                                       fname);
+                                         conn->connectpath,
+                                         fname);
 
                if (lck == NULL) {
                        file_free(fsp);
                        DEBUG(0, ("Could not get share mode lock\n"));
-                       set_saved_ntstatus(NT_STATUS_SHARING_VIOLATION);
-                       return NULL;
+                       return NT_STATUS_SHARING_VIOLATION;
                }
 
                /* First pass - send break only on batch oplocks. */
@@ -1376,33 +1418,38 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                        schedule_defer_open(lck, request_time);
                        TALLOC_FREE(lck);
                        file_free(fsp);
-                       return NULL;
+                       return NT_STATUS_SHARING_VIOLATION;
                }
 
+               /* Use the client requested access mask here, not the one we
+                * open with. */
                status = open_mode_check(conn, fname, lck,
                                         access_mask, share_access,
                                         create_options, &file_existed);
 
                if (NT_STATUS_IS_OK(status)) {
-                       /* We might be going to allow this open. Check oplock status again. */
-                       /* Second pass - send break for both batch or exclusive oplocks. */
+                       /* We might be going to allow this open. Check oplock
+                        * status again. */
+                       /* Second pass - send break for both batch or
+                        * exclusive oplocks. */
                        if (delay_for_oplocks(lck, fsp, 2, oplock_request)) {
                                schedule_defer_open(lck, request_time);
                                TALLOC_FREE(lck);
                                file_free(fsp);
-                               return NULL;
+                               return NT_STATUS_SHARING_VIOLATION;
                        }
                }
 
                if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
                        /* DELETE_PENDING is not deferred for a second */
-                       set_saved_ntstatus(status);
                        TALLOC_FREE(lck);
                        file_free(fsp);
-                       return NULL;
+                       return status;
                }
 
                if (!NT_STATUS_IS_OK(status)) {
+                       uint32 can_access_mask;
+                       BOOL can_access = True;
 
                        SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
 
@@ -1412,6 +1459,9 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                            (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
                             NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
                                files_struct *fsp_dup;
+
+                               /* Use the client requested access mask here,
+                                * not the one we open with. */
                                fsp_dup = fcb_or_dos_open(conn, fname, dev,
                                                          inode, access_mask,
                                                          share_access,
@@ -1424,7 +1474,8 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                                                *pinfo = FILE_WAS_OPENED;
                                        }
                                        conn->num_files_open++;
-                                       return fsp_dup;
+                                       *result = fsp_dup;
+                                       return NT_STATUS_OK;
                                }
                        }
 
@@ -1433,29 +1484,22 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                         * MS-Access. If a file open will fail due to share
                         * permissions and also for security (access) reasons,
                         * we need to return the access failed error, not the
-                        * share error. This means we must attempt to open the
-                        * file anyway in order to get the UNIX access error -
-                        * even if we're going to fail the open for share
-                        * reasons. This is bad, as we're burning another fd
-                        * if there are existing locks but there's nothing
-                        * else we can do. We also ensure we're not going to
-                        * create or tuncate the file as we only want an
-                        * access decision at this stage. JRA.
+                        * share error. We can't open the file due to kernel
+                        * oplock deadlock (it's possible we failed above on
+                        * the open_mode_check()) so use a userspace check.
                         */
-                       errno = 0;
-                       fsp_open = open_file(fsp,conn,fname,psbuf,
-                                            flags|(flags2&~(O_TRUNC|O_CREAT)),
-                                            unx_mode,access_mask);
-
-                       DEBUG(4,("open_file_ntcreate : share_mode deny - "
-                                "calling open_file with flags=0x%X "
-                                "flags2=0x%X mode=0%o returned %d\n",
-                                flags, (flags2&~(O_TRUNC|O_CREAT)),
-                                (unsigned int)unx_mode, (int)fsp_open ));
-
-                       if (!fsp_open && errno) {
-                               /* Default error. */
-                               set_saved_ntstatus(NT_STATUS_ACCESS_DENIED);
+
+                       if (flags & O_RDWR) {
+                               can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
+                       } else if (flags & O_WRONLY) {
+                               can_access_mask = FILE_WRITE_DATA;
+                       } else {
+                               can_access_mask = FILE_READ_DATA;
+                       }
+
+                       if (((can_access_mask & FILE_WRITE_DATA) && !CAN_WRITE(conn)) ||
+                           !can_access_file(conn,fname,psbuf,can_access_mask)) {
+                               can_access = False;
                        }
 
                        /* 
@@ -1471,7 +1515,7 @@ files_struct *open_file_ntcreate(connection_struct *conn,
 
                                /* this is a hack to speed up torture tests
                                   in 'make test' */
-                               timeout_usecs = lp_parm_int(conn->service,
+                               timeout_usecs = lp_parm_int(SNUM(conn),
                                                            "smbd","sharedelay",
                                                            SHARING_VIOLATION_USEC_WAIT);
 
@@ -1502,16 +1546,17 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                        }
 
                        TALLOC_FREE(lck);
-                       if (fsp_open) {
-                               fd_close(conn, fsp);
+                       if (can_access) {
                                /*
                                 * We have detected a sharing violation here
                                 * so return the correct error code
                                 */
-                               set_saved_ntstatus(NT_STATUS_SHARING_VIOLATION);
+                               status = NT_STATUS_SHARING_VIOLATION;
+                       } else {
+                               status = NT_STATUS_ACCESS_DENIED;
                        }
                        file_free(fsp);
-                       return NULL;
+                       return status;
                }
 
                /*
@@ -1526,31 +1571,33 @@ files_struct *open_file_ntcreate(connection_struct *conn,
         */
 
         if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
-           (def_acl = directory_has_default_acl(conn,
-                                                parent_dirname(fname)))) {
+           (def_acl = directory_has_default_acl(conn, parent_dir))) {
                unx_mode = 0777;
        }
 
-       DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o\n",
+       DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
+               "access_mask = 0x%x, open_access_mask = 0x%x\n",
                 (unsigned int)flags, (unsigned int)flags2,
-                (unsigned int)unx_mode));
+                (unsigned int)unx_mode, (unsigned int)access_mask,
+                (unsigned int)open_access_mask));
 
        /*
         * open_file strips any O_TRUNC flags itself.
         */
 
-       fsp_open = open_file(fsp,conn,fname,psbuf,flags|flags2,unx_mode,
-                            access_mask);
+       fsp_open = open_file(fsp, conn, parent_dir, newname, fname, psbuf,
+                            flags|flags2, unx_mode, access_mask,
+                            open_access_mask);
 
-       if (!fsp_open) {
+       if (!NT_STATUS_IS_OK(fsp_open)) {
                if (lck != NULL) {
                        TALLOC_FREE(lck);
                }
                file_free(fsp);
-               return NULL;
+               return fsp_open;
        }
 
-       if (!file_existed) { 
+       if (!file_existed) {
 
                /*
                 * Deal with the race condition where two smbd's detect the
@@ -1571,15 +1618,15 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                inode = fsp->inode;
 
                lck = get_share_mode_lock(NULL, dev, inode,
-                                       conn->connectpath,
-                                       fname);
+                                         conn->connectpath,
+                                         fname);
 
                if (lck == NULL) {
-                       DEBUG(0, ("open_file_ntcreate: Could not get share mode lock for %s\n", fname));
+                       DEBUG(0, ("open_file_ntcreate: Could not get share "
+                                 "mode lock for %s\n", fname));
                        fd_close(conn, fsp);
                        file_free(fsp);
-                       set_saved_ntstatus(NT_STATUS_SHARING_VIOLATION);
-                       return NULL;
+                       return NT_STATUS_SHARING_VIOLATION;
                }
 
                status = open_mode_check(conn, fname, lck,
@@ -1606,12 +1653,13 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                        defer_open(lck, request_time, timeval_zero(),
                                   &state);
                        TALLOC_FREE(lck);
-                       return NULL;
+                       return status;
                }
 
                /*
                 * We exit this block with the share entry *locked*.....
                 */
+
        }
 
        SMB_ASSERT(lck != NULL);
@@ -1621,9 +1669,18 @@ files_struct *open_file_ntcreate(connection_struct *conn,
            these only read them. Nobody but Samba can ever set a deny
            mode and we have already checked our more authoritative
            locking database for permission to set this deny mode. If
-           the kernel refuses the operations then the kernel is wrong */
+           the kernel refuses the operations then the kernel is wrong.
+          note that GPFS supports it as well - jmcd */
+
+       ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, fsp->fh->fd, share_access);
+       if(ret_flock == -1 ){
 
-       kernel_flock(fsp, share_access);
+               TALLOC_FREE(lck);
+               fd_close(conn, fsp);
+               file_free(fsp);
+               
+               return NT_STATUS_SHARING_VIOLATION;
+       }
 
        /*
         * At this point onwards, we can guarentee that the share entry
@@ -1642,10 +1699,11 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                 */
                if ((SMB_VFS_FTRUNCATE(fsp,fsp->fh->fd,0) == -1) ||
                    (SMB_VFS_FSTAT(fsp,fsp->fh->fd,psbuf)==-1)) {
+                       status = map_nt_error_from_unix(errno);
                        TALLOC_FREE(lck);
                        fd_close(conn,fsp);
                        file_free(fsp);
-                       return NULL;
+                       return status;
                }
        }
 
@@ -1655,6 +1713,11 @@ files_struct *open_file_ntcreate(connection_struct *conn,
        fsp->access_mask = access_mask;
 
        if (file_existed) {
+               /* stat opens on existing files don't get oplocks. */
+               if (is_stat_open(open_access_mask)) {
+                       fsp->oplock_type = NO_OPLOCK;
+               }
+
                if (!(flags2 & O_TRUNC)) {
                        info = FILE_WAS_OPENED;
                } else {
@@ -1662,11 +1725,6 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                }
        } else {
                info = FILE_WAS_CREATED;
-               /* Change the owner if required. */
-               if (lp_inherit_owner(SNUM(conn))) {
-                       change_owner_to_parent(conn, fsp, fsp->fsp_name,
-                                              psbuf);
-               }
        }
 
        if (pinfo) {
@@ -1685,29 +1743,26 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                        fsp->oplock_type = NO_OPLOCK;
                }
        }
-       set_share_mode(lck, fsp, 0, fsp->oplock_type);
+       set_share_mode(lck, fsp, current_user.ut.uid, 0, fsp->oplock_type);
 
        if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED ||
-                               info == FILE_WAS_SUPERSEDED) {
+           info == FILE_WAS_SUPERSEDED) {
 
                /* Handle strange delete on close create semantics. */
                if (create_options & FILE_DELETE_ON_CLOSE) {
-                       NTSTATUS result = can_set_delete_on_close(fsp, True, new_dos_attributes);
+                       status = can_set_delete_on_close(fsp, True, new_dos_attributes);
 
-                       if (!NT_STATUS_IS_OK(result)) {
+                       if (!NT_STATUS_IS_OK(status)) {
                                /* Remember to delete the mode we just added. */
                                del_share_mode(lck, fsp);
                                TALLOC_FREE(lck);
                                fd_close(conn,fsp);
                                file_free(fsp);
-                               set_saved_ntstatus(result);
-                               return NULL;
+                               return status;
                        }
                        /* Note that here we set the *inital* delete on close flag,
-                          not the regular one. */
-                       set_delete_on_close_token(lck, &current_user.ut);
-                       lck->initial_delete_on_close = True;
-                       lck->modified = True;
+                          not the regular one. The magic gets handled in close. */
+                       fsp->initial_delete_on_close = True;
                }
        
                /* Files should be initially set as archive */
@@ -1715,7 +1770,7 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                    lp_store_dos_attributes(SNUM(conn))) {
                        file_set_dosmode(conn, fname,
                                         new_dos_attributes | aARCH, NULL,
-                                        True);
+                                        parent_dir);
                }
        }
 
@@ -1729,8 +1784,8 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                int saved_errno = errno; /* We might get ENOSYS in the next
                                          * call.. */
 
-               if (SMB_VFS_FCHMOD_ACL(fsp, fsp->fh->fd, unx_mode) == -1
-                   && errno == ENOSYS) {
+               if (SMB_VFS_FCHMOD_ACL(fsp, fsp->fh->fd, unx_mode) == -1 &&
+                   errno == ENOSYS) {
                        errno = saved_errno; /* Ignore ENOSYS */
                }
 
@@ -1751,7 +1806,7 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                        } else {
                                DEBUG(5, ("open_file_ntcreate: reset "
                                          "attributes of file %s to 0%o\n",
-                                       fname, (unsigned int)new_unx_mode));
+                                         fname, (unsigned int)new_unx_mode));
                                ret = 0; /* Don't do the fchmod below. */
                        }
                }
@@ -1760,7 +1815,7 @@ files_struct *open_file_ntcreate(connection_struct *conn,
                    (SMB_VFS_FCHMOD(fsp, fsp->fh->fd, new_unx_mode) == -1))
                        DEBUG(5, ("open_file_ntcreate: failed to reset "
                                  "attributes of file %s to 0%o\n",
-                               fname, (unsigned int)new_unx_mode));
+                                 fname, (unsigned int)new_unx_mode));
        }
 
        /* If this is a successful open, we must remove any deferred open
@@ -1770,31 +1825,33 @@ files_struct *open_file_ntcreate(connection_struct *conn,
 
        conn->num_files_open++;
 
-       return fsp;
+       *result = fsp;
+       return NT_STATUS_OK;
 }
 
 /****************************************************************************
  Open a file for for write to ensure that we can fchmod it.
 ****************************************************************************/
 
-files_struct *open_file_fchmod(connection_struct *conn, const char *fname,
-                              SMB_STRUCT_STAT *psbuf)
+NTSTATUS open_file_fchmod(connection_struct *conn, const char *fname,
+                         SMB_STRUCT_STAT *psbuf, files_struct **result)
 {
        files_struct *fsp = NULL;
-       BOOL fsp_open;
+       NTSTATUS status;
 
        if (!VALID_STAT(*psbuf)) {
-               return NULL;
+               return NT_STATUS_INVALID_PARAMETER;
        }
 
-       fsp = file_new(conn);
-       if(!fsp) {
-               return NULL;
+       status = file_new(conn, &fsp);
+       if(!NT_STATUS_IS_OK(status)) {
+               return status;
        }
 
        /* note! we must use a non-zero desired access or we don't get
            a real file descriptor. Oh what a twisted web we weave. */
-       fsp_open = open_file(fsp,conn,fname,psbuf,O_WRONLY,0,FILE_WRITE_DATA);
+       status = open_file(fsp, conn, NULL, NULL, fname, psbuf, O_WRONLY, 0,
+                          FILE_WRITE_DATA, FILE_WRITE_DATA);
 
        /* 
         * This is not a user visible file open.
@@ -1802,12 +1859,13 @@ files_struct *open_file_fchmod(connection_struct *conn, const char *fname,
         * the conn->num_files_open.
         */
 
-       if (!fsp_open) {
+       if (!NT_STATUS_IS_OK(status)) {
                file_free(fsp);
-               return NULL;
+               return status;
        }
 
-       return fsp;
+       *result = fsp;
+       return NT_STATUS_OK;
 }
 
 /****************************************************************************
@@ -1821,22 +1879,94 @@ int close_file_fchmod(files_struct *fsp)
        return ret;
 }
 
+static NTSTATUS mkdir_internal(connection_struct *conn, const char *name,
+                              SMB_STRUCT_STAT *psbuf)
+{
+       int ret= -1;
+       mode_t mode;
+       char *parent_dir;
+       const char *dirname;
+       NTSTATUS status;
+
+       if(!CAN_WRITE(conn)) {
+               DEBUG(5,("mkdir_internal: failing create on read-only share "
+                        "%s\n", lp_servicename(SNUM(conn))));
+               return NT_STATUS_ACCESS_DENIED;
+       }
+
+       status = check_name(conn, name);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+
+       if (!parent_dirname_talloc(tmp_talloc_ctx(), name, &parent_dir,
+                                  &dirname)) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       mode = unix_mode(conn, aDIR, name, parent_dir);
+
+       if ((ret=SMB_VFS_MKDIR(conn, name, mode)) != 0) {
+               return map_nt_error_from_unix(errno);
+       }
+
+       /* Ensure we're checking for a symlink here.... */
+       /* We don't want to get caught by a symlink racer. */
+
+       if (SMB_VFS_LSTAT(conn, name, psbuf) == -1) {
+               DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
+                         name, strerror(errno)));
+               return map_nt_error_from_unix(errno);
+       }
+
+       if (!S_ISDIR(psbuf->st_mode)) {
+               DEBUG(0, ("Directory just '%s' created is not a directory\n",
+                         name));
+               return NT_STATUS_ACCESS_DENIED;
+       }
+
+       if (lp_inherit_perms(SNUM(conn))) {
+               inherit_access_acl(conn, parent_dir, name, mode);
+       }
+
+       /*
+        * Check if high bits should have been set,
+        * then (if bits are missing): add them.
+        * Consider bits automagically set by UNIX, i.e. SGID bit from parent
+        * dir.
+        */
+       if (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO) && (mode & ~psbuf->st_mode)) {
+               SMB_VFS_CHMOD(conn, name,
+                             psbuf->st_mode | (mode & ~psbuf->st_mode));
+       }
+
+       /* Change the owner if required. */
+       if (lp_inherit_owner(SNUM(conn))) {
+               change_dir_owner_to_parent(conn, parent_dir, name, psbuf);
+       }
+
+       notify_action(conn, parent_dir, dirname, FILE_NOTIFY_CHANGE_DIR_NAME,
+                     NOTIFY_ACTION_ADDED);
+
+       return NT_STATUS_OK;
+}
+
 /****************************************************************************
  Open a directory from an NT SMB call.
 ****************************************************************************/
 
-files_struct *open_directory(connection_struct *conn,
-                               const char *fname,
-                               SMB_STRUCT_STAT *psbuf,
-                               uint32 access_mask,
-                               uint32 share_access,
-                               uint32 create_disposition,
-                               uint32 create_options,
-                               int *pinfo)
+NTSTATUS open_directory(connection_struct *conn,
+                       const char *fname,
+                       SMB_STRUCT_STAT *psbuf,
+                       uint32 access_mask,
+                       uint32 share_access,
+                       uint32 create_disposition,
+                       uint32 create_options,
+                       int *pinfo,
+                       files_struct **result)
 {
        files_struct *fsp = NULL;
        BOOL dir_existed = VALID_STAT(*psbuf) ? True : False;
-       BOOL create_dir = False;
        struct share_mode_lock *lck = NULL;
        NTSTATUS status;
        int info = 0;
@@ -1852,48 +1982,58 @@ files_struct *open_directory(connection_struct *conn,
 
        if (is_ntfs_stream_name(fname)) {
                DEBUG(0,("open_directory: %s is a stream name!\n", fname ));
-               set_saved_ntstatus(NT_STATUS_NOT_A_DIRECTORY);
-               return NULL;
+               return NT_STATUS_NOT_A_DIRECTORY;
        }
 
        switch( create_disposition ) {
                case FILE_OPEN:
-                       /* If directory exists open. If directory doesn't
-                        * exist error. */
-                       if (!dir_existed) {
-                               DEBUG(5,("open_directory: FILE_OPEN requested "
-                                        "for directory %s and it doesn't "
-                                        "exist.\n", fname ));
-                               set_saved_ntstatus(NT_STATUS_OBJECT_NAME_NOT_FOUND);
-                               return NULL;
-                       }
+
                        info = FILE_WAS_OPENED;
+
+                       /*
+                        * We want to follow symlinks here.
+                        */
+
+                       if (SMB_VFS_STAT(conn, fname, psbuf) != 0) {
+                               return map_nt_error_from_unix(errno);
+                       }
+                               
                        break;
 
                case FILE_CREATE:
+
                        /* If directory exists error. If directory doesn't
                         * exist create. */
-                       if (dir_existed) {
-                               DEBUG(5,("open_directory: FILE_CREATE "
-                                        "requested for directory %s and it "
-                                        "already exists.\n", fname ));
-                               set_saved_error_triple(ERRDOS, ERRfilexists,
-                                                      NT_STATUS_OBJECT_NAME_COLLISION);
-                               return NULL;
+
+                       status = mkdir_internal(conn, fname, psbuf);
+                       if (!NT_STATUS_IS_OK(status)) {
+                               DEBUG(2, ("open_directory: unable to create "
+                                         "%s. Error was %s\n", fname,
+                                         nt_errstr(status)));
+                               return status;
                        }
-                       create_dir = True;
+
                        info = FILE_WAS_CREATED;
                        break;
 
                case FILE_OPEN_IF:
-                       /* If directory exists open. If directory doesn't
-                        * exist create. */
-                       if (!dir_existed) {
-                               create_dir = True;
+                       /*
+                        * If directory exists open. If directory doesn't
+                        * exist create.
+                        */
+
+                       status = mkdir_internal(conn, fname, psbuf);
+
+                       if (NT_STATUS_IS_OK(status)) {
                                info = FILE_WAS_CREATED;
-                       } else {
+                       }
+
+                       if (NT_STATUS_EQUAL(status,
+                                           NT_STATUS_OBJECT_NAME_COLLISION)) {
                                info = FILE_WAS_OPENED;
+                               status = NT_STATUS_OK;
                        }
+                               
                        break;
 
                case FILE_SUPERSEDE:
@@ -1903,45 +2043,18 @@ files_struct *open_directory(connection_struct *conn,
                        DEBUG(5,("open_directory: invalid create_disposition "
                                 "0x%x for directory %s\n",
                                 (unsigned int)create_disposition, fname));
-                       set_saved_ntstatus(NT_STATUS_INVALID_PARAMETER);
-                       return NULL;
+                       return NT_STATUS_INVALID_PARAMETER;
        }
 
-       if (create_dir) {
-               /*
-                * Try and create the directory.
-                */
-
-               /* We know bad_path is false as it's caught earlier. */
-
-               status = mkdir_internal(conn, fname, False);
-
-               if (!NT_STATUS_IS_OK(status)) {
-                       DEBUG(2,("open_directory: unable to create %s. "
-                                "Error was %s\n", fname, strerror(errno) ));
-                       /* Ensure we return the correct NT status to the
-                        * client. */
-                       set_saved_error_triple(0, 0, status);
-                       return NULL;
-               }
-
-               /* Ensure we're checking for a symlink here.... */
-               /* We don't want to get caught by a symlink racer. */
-
-               if(SMB_VFS_LSTAT(conn,fname, psbuf) != 0) {
-                       return NULL;
-               }
-
-               if(!S_ISDIR(psbuf->st_mode)) {
-                       DEBUG(0,("open_directory: %s is not a directory !\n",
-                                fname ));
-                       return NULL;
-               }
+       if(!S_ISDIR(psbuf->st_mode)) {
+               DEBUG(5,("open_directory: %s is not a directory !\n",
+                        fname ));
+               return NT_STATUS_NOT_A_DIRECTORY;
        }
 
-       fsp = file_new(conn);
-       if(!fsp) {
-               return NULL;
+       status = file_new(conn, &fsp);
+       if(!NT_STATUS_IS_OK(status)) {
+               return status;
        }
 
        /*
@@ -1953,7 +2066,7 @@ files_struct *open_directory(connection_struct *conn,
        fsp->dev = psbuf->st_dev;
        fsp->vuid = current_user.vuid;
        fsp->file_pid = global_smbpid;
-       fsp->can_lock = True;
+       fsp->can_lock = False;
        fsp->can_read = False;
        fsp->can_write = False;
 
@@ -1970,14 +2083,13 @@ files_struct *open_directory(connection_struct *conn,
        string_set(&fsp->fsp_name,fname);
 
        lck = get_share_mode_lock(NULL, fsp->dev, fsp->inode,
-                               conn->connectpath,
-                               fname);
+                                 conn->connectpath,
+                                 fname);
 
        if (lck == NULL) {
                DEBUG(0, ("open_directory: Could not get share mode lock for %s\n", fname));
                file_free(fsp);
-               set_saved_ntstatus(NT_STATUS_SHARING_VIOLATION);
-               return NULL;
+               return NT_STATUS_SHARING_VIOLATION;
        }
 
        status = open_mode_check(conn, fname, lck,
@@ -1985,65 +2097,85 @@ files_struct *open_directory(connection_struct *conn,
                                create_options, &dir_existed);
 
        if (!NT_STATUS_IS_OK(status)) {
-               set_saved_ntstatus(status);
                TALLOC_FREE(lck);
                file_free(fsp);
-               return NULL;
+               return status;
        }
 
-       set_share_mode(lck, fsp, 0, NO_OPLOCK);
+       set_share_mode(lck, fsp, current_user.ut.uid, 0, NO_OPLOCK);
 
        /* 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);
-               if (!NT_STATUS_IS_OK(status)) {
-                       set_saved_ntstatus(status);
+               if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
                        TALLOC_FREE(lck);
                        file_free(fsp);
-                       return NULL;
+                       return status;
                }
 
-               set_delete_on_close_token(lck, &current_user.ut);
-               lck->initial_delete_on_close = True;
-               lck->modified = True;
+               if (NT_STATUS_IS_OK(status)) {
+                       /* Note that here we set the *inital* delete on close flag,
+                          not the regular one. The magic gets handled in close. */
+                       fsp->initial_delete_on_close = True;
+               }
        }
 
        TALLOC_FREE(lck);
 
-       /* Change the owner if required. */
-       if ((info == FILE_WAS_CREATED) && lp_inherit_owner(SNUM(conn))) {
-               change_owner_to_parent(conn, fsp, fsp->fsp_name, psbuf);
-       }
-
        if (pinfo) {
                *pinfo = info;
        }
 
        conn->num_files_open++;
 
-       return fsp;
+       *result = fsp;
+       return NT_STATUS_OK;
+}
+
+NTSTATUS create_directory(connection_struct *conn, const char *directory)
+{
+       NTSTATUS status;
+       SMB_STRUCT_STAT sbuf;
+       files_struct *fsp;
+
+       SET_STAT_INVALID(sbuf);
+       
+       status = open_directory(conn, directory, &sbuf,
+                               FILE_READ_ATTRIBUTES, /* Just a stat open */
+                               FILE_SHARE_NONE, /* Ignored for stat opens */
+                               FILE_CREATE, 0, NULL, &fsp);
+
+       if (NT_STATUS_IS_OK(status)) {
+               close_file(fsp, NORMAL_CLOSE);
+       }
+
+       return status;
 }
 
 /****************************************************************************
  Open a pseudo-file (no locking checks - a 'stat' open).
 ****************************************************************************/
 
-files_struct *open_file_stat(connection_struct *conn, char *fname,
-                            SMB_STRUCT_STAT *psbuf)
+NTSTATUS open_file_stat(connection_struct *conn, const char *fname,
+                       SMB_STRUCT_STAT *psbuf, files_struct **result)
 {
        files_struct *fsp = NULL;
+       NTSTATUS status;
 
-       if (!VALID_STAT(*psbuf))
-               return NULL;
+       if (!VALID_STAT(*psbuf)) {
+               return NT_STATUS_INVALID_PARAMETER;
+       }
 
        /* Can't 'stat' open directories. */
-       if(S_ISDIR(psbuf->st_mode))
-               return NULL;
+       if(S_ISDIR(psbuf->st_mode)) {
+               return NT_STATUS_FILE_IS_A_DIRECTORY;
+       }
 
-       fsp = file_new(conn);
-       if(!fsp)
-               return NULL;
+       status = file_new(conn, &fsp);
+       if(!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
 
        DEBUG(5,("open_file_stat: 'opening' file %s\n", fname));
 
@@ -2069,7 +2201,8 @@ files_struct *open_file_stat(connection_struct *conn, char *fname,
 
        conn->num_files_open++;
 
-       return fsp;
+       *result = fsp;
+       return NT_STATUS_OK;
 }
 
 /****************************************************************************
@@ -2077,7 +2210,8 @@ files_struct *open_file_stat(connection_struct *conn, char *fname,
  smbd process.
 ****************************************************************************/
 
-void msg_file_was_renamed(int msg_type, struct process_id src, void *buf, size_t len)
+void msg_file_was_renamed(int msg_type, struct process_id src,
+                         void *buf, size_t len, void *private_data)
 {
        files_struct *fsp;
        char *frm = (char *)buf;