| | 1 | /* |
| | 2 | * Copyright (c) 2015 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | |
| | 29 | #ifndef SYS_DOC_TOMBSTONE_H_ |
| | 30 | #define SYS_DOC_TOMBSTONE_H_ |
| | 31 | |
| | 32 | #include <sys/types.h> |
| | 33 | #include <stdbool.h> |
| | 34 | |
| | 35 | #ifdef KERNEL_PRIVATE |
| | 36 | |
| | 37 | /* |
| | 38 | * struct representing a document "tombstone" that's recorded |
| | 39 | * when a thread manipulates files marked with a document-id. |
| | 40 | * if the thread recreates the same item, this tombstone is |
| | 41 | * used to preserve the document_id on the new file. |
| | 42 | * |
| | 43 | * It is a separate structure because of its size - we want to |
| | 44 | * allocate it on demand instead of just stuffing it into the |
| | 45 | * uthread structure. |
| | 46 | */ |
| | 47 | struct doc_tombstone { |
| | 48 | struct vnode *t_lastop_parent; |
| | 49 | struct vnode *t_lastop_item; |
| | 50 | uint32_t t_lastop_parent_vid; |
| | 51 | uint32_t t_lastop_item_vid; |
| | 52 | uint64_t t_lastop_fileid; |
| | 53 | uint64_t t_lastop_document_id; |
| | 54 | unsigned char t_lastop_filename[NAME_MAX + 1]; |
| | 55 | }; |
| | 56 | |
| | 57 | struct componentname; |
| | 58 | |
| | 59 | struct doc_tombstone *doc_tombstone_get(void); |
| | 60 | void doc_tombstone_clear(struct doc_tombstone *ut, struct vnode **old_vpp); |
| | 61 | void doc_tombstone_save(struct vnode *dvp, struct vnode *vp, |
| | 62 | struct componentname *cnp, uint64_t doc_id, |
| | 63 | ino64_t file_id); |
| | 64 | bool doc_tombstone_should_ignore_name(const char *nameptr, int len); |
| | 65 | bool doc_tombstone_should_save(struct doc_tombstone *ut, struct vnode *vp, |
| | 66 | struct componentname *cnp); |
| | 67 | |
| | 68 | #endif // defined(KERNEL_PRIVATE) |
| | 69 | |
| | 70 | #endif // SYS_DOC_TOMBSTONE_H_ |
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