~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/fs/ntfs/mft.h

Version: ~ [ linux-5.1-rc5 ] ~ [ linux-5.0.7 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.34 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.111 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.168 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.178 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.138 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.65 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * mft.h - Defines for mft record handling in NTFS Linux kernel driver.
  3  *         Part of the Linux-NTFS project.
  4  *
  5  * Copyright (c) 2001-2004 Anton Altaparmakov
  6  *
  7  * This program/include file is free software; you can redistribute it and/or
  8  * modify it under the terms of the GNU General Public License as published
  9  * by the Free Software Foundation; either version 2 of the License, or
 10  * (at your option) any later version.
 11  *
 12  * This program/include file is distributed in the hope that it will be
 13  * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 14  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 15  * GNU General Public License for more details.
 16  *
 17  * You should have received a copy of the GNU General Public License
 18  * along with this program (in the main directory of the Linux-NTFS
 19  * distribution in the file COPYING); if not, write to the Free Software
 20  * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 21  */
 22 
 23 #ifndef _LINUX_NTFS_MFT_H
 24 #define _LINUX_NTFS_MFT_H
 25 
 26 #include <linux/fs.h>
 27 #include <linux/highmem.h>
 28 #include <linux/pagemap.h>
 29 
 30 #include "inode.h"
 31 
 32 extern MFT_RECORD *map_mft_record(ntfs_inode *ni);
 33 extern void unmap_mft_record(ntfs_inode *ni);
 34 
 35 extern MFT_RECORD *map_extent_mft_record(ntfs_inode *base_ni, MFT_REF mref,
 36                 ntfs_inode **ntfs_ino);
 37 
 38 static inline void unmap_extent_mft_record(ntfs_inode *ni)
 39 {
 40         unmap_mft_record(ni);
 41         return;
 42 }
 43 
 44 #ifdef NTFS_RW
 45 
 46 /**
 47  * flush_dcache_mft_record_page - flush_dcache_page() for mft records
 48  * @ni:         ntfs inode structure of mft record
 49  *
 50  * Call flush_dcache_page() for the page in which an mft record resides.
 51  *
 52  * This must be called every time an mft record is modified, just after the
 53  * modification.
 54  */
 55 static inline void flush_dcache_mft_record_page(ntfs_inode *ni)
 56 {
 57         flush_dcache_page(ni->page);
 58 }
 59 
 60 extern void __mark_mft_record_dirty(ntfs_inode *ni);
 61 
 62 /**
 63  * mark_mft_record_dirty - set the mft record and the page containing it dirty
 64  * @ni:         ntfs inode describing the mapped mft record
 65  *
 66  * Set the mapped (extent) mft record of the (base or extent) ntfs inode @ni,
 67  * as well as the page containing the mft record, dirty.  Also, mark the base
 68  * vfs inode dirty.  This ensures that any changes to the mft record are
 69  * written out to disk.
 70  *
 71  * NOTE:  Do not do anything if the mft record is already marked dirty.
 72  */
 73 static inline void mark_mft_record_dirty(ntfs_inode *ni)
 74 {
 75         if (!NInoTestSetDirty(ni))
 76                 __mark_mft_record_dirty(ni);
 77 }
 78 
 79 extern int ntfs_sync_mft_mirror(ntfs_volume *vol, const unsigned long mft_no,
 80                 MFT_RECORD *m, int sync);
 81 
 82 extern int write_mft_record_nolock(ntfs_inode *ni, MFT_RECORD *m, int sync);
 83 
 84 /**
 85  * write_mft_record - write out a mapped (extent) mft record
 86  * @ni:         ntfs inode describing the mapped (extent) mft record
 87  * @m:          mapped (extent) mft record to write
 88  * @sync:       if true, wait for i/o completion
 89  *
 90  * This is just a wrapper for write_mft_record_nolock() (see mft.c), which
 91  * locks the page for the duration of the write.  This ensures that there are
 92  * no race conditions between writing the mft record via the dirty inode code
 93  * paths and via the page cache write back code paths or between writing
 94  * neighbouring mft records residing in the same page.
 95  *
 96  * Locking the page also serializes us against ->readpage() if the page is not
 97  * uptodate.
 98  *
 99  * On success, clean the mft record and return 0.  On error, leave the mft
100  * record dirty and return -errno.
101  */
102 static inline int write_mft_record(ntfs_inode *ni, MFT_RECORD *m, int sync)
103 {
104         struct page *page = ni->page;
105         int err;
106 
107         BUG_ON(!page);
108         lock_page(page);
109         err = write_mft_record_nolock(ni, m, sync);
110         unlock_page(page);
111         return err;
112 }
113 
114 extern bool ntfs_may_write_mft_record(ntfs_volume *vol,
115                 const unsigned long mft_no, const MFT_RECORD *m,
116                 ntfs_inode **locked_ni);
117 
118 extern ntfs_inode *ntfs_mft_record_alloc(ntfs_volume *vol, const int mode,
119                 ntfs_inode *base_ni, MFT_RECORD **mrec);
120 extern int ntfs_extent_mft_record_free(ntfs_inode *ni, MFT_RECORD *m);
121 
122 #endif /* NTFS_RW */
123 
124 #endif /* _LINUX_NTFS_MFT_H */
125 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp