static NTSTATUS close_directory(struct smb_request *req, files_struct *fsp, enum file_close_type close_type) { struct server_id self = messaging_server_id(fsp->conn->sconn->msg_ctx); struct share_mode_lock *lck = NULL; bool delete_dir = False; NTSTATUS status = NT_STATUS_OK; NTSTATUS status1 = NT_STATUS_OK; const struct security_token *del_nt_token = NULL; const struct security_unix_token *del_token = NULL; NTSTATUS notify_status; if (fsp->conn->sconn->using_smb2) { notify_status = STATUS_NOTIFY_CLEANUP; } else { notify_status = NT_STATUS_OK; } /* * NT can set delete_on_close of the last open * reference to a directory also. */ lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id); if (lck == NULL) { DEBUG(0, ("close_directory: Could not get share mode lock for " "%s\n", fsp_str_dbg(fsp))); return NT_STATUS_INVALID_PARAMETER; } if (fsp->initial_delete_on_close) { bool became_user = False; /* Initial delete on close was set - for * directories we don't care if anyone else * wrote a real delete on close. */ if (get_current_vuid(fsp->conn) != fsp->vuid) { become_user(fsp->conn, fsp->vuid); became_user = True; } send_stat_cache_delete_message(fsp->conn->sconn->msg_ctx, fsp->fsp_name->base_name); set_delete_on_close_lck(fsp, lck, get_current_nttok(fsp->conn), get_current_utok(fsp->conn)); fsp->delete_on_close = true; if (became_user) { unbecome_user(); } } delete_dir = get_delete_on_close_token(lck, fsp->name_hash, &del_nt_token, &del_token); if (delete_dir) { int i; /* See if others still have the dir open. If this is the * case, then don't delete. If all opens are POSIX delete now. */ for (i=0; i<lck->data->num_share_modes; i++) { struct share_mode_entry *e = &lck->data->share_modes[i]; if (is_valid_share_mode_entry(e) && e->name_hash == fsp->name_hash) { if ((fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) { continue; } if (serverid_equal(&self, &e->pid) && (e->share_file_id == fsp->fh->gen_id)) { continue; } if (share_mode_stale_pid(lck->data, i)) { continue; } delete_dir = False; break; } } } if ((close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) && delete_dir) { /* Become the user who requested the delete. */ if (!push_sec_ctx()) { smb_panic("close_directory: failed to push sec_ctx.\n"); } set_sec_ctx(del_token->uid, del_token->gid, del_token->ngroups, del_token->groups, del_nt_token); if (!del_share_mode(lck, fsp)) { DEBUG(0, ("close_directory: Could not delete share entry for " "%s\n", fsp_str_dbg(fsp))); } TALLOC_FREE(lck); if ((fsp->conn->fs_capabilities & FILE_NAMED_STREAMS) && !is_ntfs_stream_smb_fname(fsp->fsp_name)) { status = delete_all_streams(fsp->conn, fsp->fsp_name->base_name); if (!NT_STATUS_IS_OK(status)) { DEBUG(5, ("delete_all_streams failed: %s\n", nt_errstr(status))); return status; } } status = rmdir_internals(talloc_tos(), fsp); DEBUG(5,("close_directory: %s. Delete on close was set - " "deleting directory returned %s.\n", fsp_str_dbg(fsp), nt_errstr(status))); /* unbecome user. */ pop_sec_ctx(); /* * Ensure we remove any change notify requests that would * now fail as the directory has been deleted. */ if (NT_STATUS_IS_OK(status)) { notify_status = NT_STATUS_DELETE_PENDING; } } else { if (!del_share_mode(lck, fsp)) { DEBUG(0, ("close_directory: Could not delete share entry for " "%s\n", fsp_str_dbg(fsp))); } TALLOC_FREE(lck); } remove_pending_change_notify_requests_by_fid(fsp, notify_status); status1 = fd_close(fsp); if (!NT_STATUS_IS_OK(status1)) { DEBUG(0, ("Could not close dir! fname=%s, fd=%d, err=%d=%s\n", fsp_str_dbg(fsp), fsp->fh->fd, errno, strerror(errno))); } /* * Do the code common to files and directories. */ close_filestruct(fsp); file_free(req, fsp); if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(status1)) { status = status1; } return status; }
static NTSTATUS close_remove_share_mode(files_struct *fsp, enum file_close_type close_type) { connection_struct *conn = fsp->conn; struct server_id self = messaging_server_id(conn->sconn->msg_ctx); bool delete_file = false; bool changed_user = false; struct share_mode_lock *lck = NULL; NTSTATUS status = NT_STATUS_OK; NTSTATUS tmp_status; struct file_id id; const struct security_unix_token *del_token = NULL; const struct security_token *del_nt_token = NULL; bool got_tokens = false; bool normal_close; int ret_flock, retries = 1; /* Ensure any pending write time updates are done. */ if (fsp->update_write_time_event) { update_write_time_handler(fsp->conn->sconn->ev_ctx, fsp->update_write_time_event, timeval_current(), (void *)fsp); } /* * Lock the share entries, and determine if we should delete * on close. If so delete whilst the lock is still in effect. * This prevents race conditions with the file being created. JRA. */ lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id); if (lck == NULL) { DEBUG(0, ("close_remove_share_mode: Could not get share mode " "lock for file %s\n", fsp_str_dbg(fsp))); return NT_STATUS_INVALID_PARAMETER; } if (fsp->write_time_forced) { DEBUG(10,("close_remove_share_mode: write time forced " "for file %s\n", fsp_str_dbg(fsp))); set_close_write_time(fsp, lck->data->changed_write_time); } else if (fsp->update_write_time_on_close) { /* Someone had a pending write. */ if (null_timespec(fsp->close_write_time)) { DEBUG(10,("close_remove_share_mode: update to current time " "for file %s\n", fsp_str_dbg(fsp))); /* Update to current time due to "normal" write. */ set_close_write_time(fsp, timespec_current()); } else { DEBUG(10,("close_remove_share_mode: write time pending " "for file %s\n", fsp_str_dbg(fsp))); /* Update to time set on close call. */ set_close_write_time(fsp, fsp->close_write_time); } } if (fsp->initial_delete_on_close && !is_delete_on_close_set(lck, fsp->name_hash)) { bool became_user = False; /* Initial delete on close was set and no one else * wrote a real delete on close. */ if (get_current_vuid(conn) != fsp->vuid) { become_user(conn, fsp->vuid); became_user = True; } fsp->delete_on_close = true; set_delete_on_close_lck(fsp, lck, get_current_nttok(conn), get_current_utok(conn)); if (became_user) { unbecome_user(); } } delete_file = is_delete_on_close_set(lck, fsp->name_hash); if (delete_file) { int i; /* See if others still have the file open via this pathname. If this is the case, then don't delete. If all opens are POSIX delete now. */ for (i=0; i<lck->data->num_share_modes; i++) { struct share_mode_entry *e = &lck->data->share_modes[i]; if (!is_valid_share_mode_entry(e)) { continue; } if (e->name_hash != fsp->name_hash) { continue; } if ((fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) { continue; } if (serverid_equal(&self, &e->pid) && (e->share_file_id == fsp->fh->gen_id)) { continue; } if (share_mode_stale_pid(lck->data, i)) { continue; } delete_file = False; break; } } /* * NT can set delete_on_close of the last open * reference to a file. */ normal_close = (close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE); if (!normal_close || !delete_file) { status = NT_STATUS_OK; goto done; } /* * Ok, we have to delete the file */ DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set " "- deleting file.\n", fsp_str_dbg(fsp))); /* * Don't try to update the write time when we delete the file */ fsp->update_write_time_on_close = false; got_tokens = get_delete_on_close_token(lck, fsp->name_hash, &del_nt_token, &del_token); SMB_ASSERT(got_tokens); if (!unix_token_equal(del_token, get_current_utok(conn))) { /* Become the user who requested the delete. */ DEBUG(5,("close_remove_share_mode: file %s. " "Change user to uid %u\n", fsp_str_dbg(fsp), (unsigned int)del_token->uid)); if (!push_sec_ctx()) { smb_panic("close_remove_share_mode: file %s. failed to push " "sec_ctx.\n"); } set_sec_ctx(del_token->uid, del_token->gid, del_token->ngroups, del_token->groups, del_nt_token); changed_user = true; } /* We can only delete the file if the name we have is still valid and hasn't been renamed. */ tmp_status = vfs_stat_fsp(fsp); if (!NT_STATUS_IS_OK(tmp_status)) { DEBUG(5,("close_remove_share_mode: file %s. Delete on close " "was set and stat failed with error %s\n", fsp_str_dbg(fsp), nt_errstr(tmp_status))); /* * Don't save the errno here, we ignore this error */ goto done; } id = vfs_file_id_from_sbuf(conn, &fsp->fsp_name->st); if (!file_id_equal(&fsp->file_id, &id)) { DEBUG(5,("close_remove_share_mode: file %s. Delete on close " "was set and dev and/or inode does not match\n", fsp_str_dbg(fsp))); DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, " "stat file_id %s\n", fsp_str_dbg(fsp), file_id_string_tos(&fsp->file_id), file_id_string_tos(&id))); /* * Don't save the errno here, we ignore this error */ goto done; } if ((conn->fs_capabilities & FILE_NAMED_STREAMS) && !is_ntfs_stream_smb_fname(fsp->fsp_name)) { status = delete_all_streams(conn, fsp->fsp_name->base_name); if (!NT_STATUS_IS_OK(status)) { DEBUG(5, ("delete_all_streams failed: %s\n", nt_errstr(status))); goto done; } } retry_delete: /* temporary files with delete on close set will not be deleted on a * cifs share using a netapp backend since they are opened with * read + write access mask. * close the file to allow the delete. */ if (fsp->can_write && !S_ISDIR(fsp->fsp_name->st.st_ex_mode) && fsp->fh->ref_count == 1 && retries) { status = fd_close(fsp); if (!NT_STATUS_IS_OK(status)) { DEBUG(3, ("close_remove_share_mode: Error %s closing %s\n", nt_errstr(status), smb_fname_str_dbg(fsp->fsp_name))); goto skip_retry; } if (SMB_VFS_UNLINK(conn, fsp->fsp_name) != 0) { /* * This call can potentially fail as another smbd may * have had the file open with delete on close set and * deleted it when its last reference to this file * went away. Hence we log this but not at debug level * zero. */ DEBUG(5,("close_remove_share_mode: file %s. Delete on close " "was set and unlink failed with error %s\n", fsp_str_dbg(fsp), strerror(errno))); status = map_nt_error_from_unix(errno); retries = 0; goto retry_delete; } } else { if (SMB_VFS_UNLINK(conn, fsp->fsp_name) != 0) { /* * This call can potentially fail as another smbd may * have had the file open with delete on close set and * deleted it when its last reference to this file * went away. Hence we log this but not at debug level * zero. */ DEBUG(5,("close_remove_share_mode: file %s. Delete on close " "was set and unlink failed with error %s\n", fsp_str_dbg(fsp), strerror(errno))); status = map_nt_error_from_unix(errno); } } /* As we now have POSIX opens which can unlink * with other open files we may have taken * this code path with more than one share mode * entry - ensure we only delete once by resetting * the delete on close flag. JRA. */ skip_retry: fsp->delete_on_close = false; reset_delete_on_close_lck(fsp, lck); done: if (changed_user) { /* unbecome user. */ pop_sec_ctx(); } /* remove filesystem sharemodes */ ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, 0, 0); if (ret_flock == -1) { DEBUG(2, ("close_remove_share_mode: removing kernel flock for " "%s failed: %s\n", fsp_str_dbg(fsp), strerror(errno))); } if (!del_share_mode(lck, fsp)) { DEBUG(0, ("close_remove_share_mode: Could not delete share " "entry for file %s\n", fsp_str_dbg(fsp))); } TALLOC_FREE(lck); if (delete_file) { /* * Do the notification after we released the share * mode lock. Inside notify_fname we take out another * tdb lock. With ctdb also accessing our databases, * this can lead to deadlocks. Putting this notify * after the TALLOC_FREE(lck) above we avoid locking * two records simultaneously. Notifies are async and * informational only, so calling the notify_fname * without holding the share mode lock should not do * any harm. */ notify_fname(conn, NOTIFY_ACTION_REMOVED, FILE_NOTIFY_CHANGE_FILE_NAME, fsp->fsp_name->base_name); } return status; }
static struct aio_open_private_data *create_private_open_data(const files_struct *fsp, int flags, mode_t mode) { struct aio_open_private_data *opd = talloc_zero(NULL, struct aio_open_private_data); const char *fname = NULL; if (!opd) { return NULL; } opd->jobid = aio_pthread_open_jobid++; opd->dir_fd = -1; opd->ret_fd = -1; opd->ret_errno = EINPROGRESS; opd->flags = flags; opd->mode = mode; opd->mid = fsp->mid; opd->in_progress = true; opd->sconn = fsp->conn->sconn; opd->initial_allocation_size = fsp->initial_allocation_size; /* Copy our current credentials. */ opd->ux_tok = copy_unix_token(opd, get_current_utok(fsp->conn)); if (opd->ux_tok == NULL) { TALLOC_FREE(opd); return NULL; } /* * Copy the parent directory name and the * relative path within it. */ if (parent_dirname(opd, fsp->fsp_name->base_name, &opd->dname, &fname) == false) { TALLOC_FREE(opd); return NULL; } opd->fname = talloc_strdup(opd, fname); if (opd->fname == NULL) { TALLOC_FREE(opd); return NULL; } #if defined(O_DIRECTORY) opd->dir_fd = open(opd->dname, O_RDONLY|O_DIRECTORY); #else opd->dir_fd = open(opd->dname, O_RDONLY); #endif if (opd->dir_fd == -1) { TALLOC_FREE(opd); return NULL; } talloc_set_destructor(opd, opd_destructor); DLIST_ADD_END(open_pd_list, opd, struct aio_open_private_data *); return opd; }