| 1 | /* |
| 2 | * JFFS2 -- Journalling Flash File System, Version 2. |
| 3 | * |
| 4 | * Copyright © 2001-2007 Red Hat, Inc. |
| 5 | * Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org> |
| 6 | * |
| 7 | * Created by David Woodhouse <dwmw2@infradead.org> |
| 8 | * |
| 9 | * For licensing information, see the file 'LICENCE' in this directory. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #ifndef _JFFS2_FS_I |
| 14 | #define _JFFS2_FS_I |
| 15 | |
| 16 | #include <linux/rbtree.h> |
| 17 | #include <linux/posix_acl.h> |
| 18 | #include <linux/mutex.h> |
| 19 | |
| 20 | struct jffs2_inode_info { |
| 21 | /* We need an internal mutex similar to inode->i_mutex. |
| 22 | Unfortunately, we can't used the existing one, because |
| 23 | either the GC would deadlock, or we'd have to release it |
| 24 | before letting GC proceed. Or we'd have to put ugliness |
| 25 | into the GC code so it didn't attempt to obtain the i_mutex |
| 26 | for the inode(s) which are already locked */ |
| 27 | struct mutex sem; |
| 28 | |
| 29 | /* The highest (datanode) version number used for this ino */ |
| 30 | uint32_t highest_version; |
| 31 | |
| 32 | /* List of data fragments which make up the file */ |
| 33 | struct rb_root fragtree; |
| 34 | |
| 35 | /* There may be one datanode which isn't referenced by any of the |
| 36 | above fragments, if it contains a metadata update but no actual |
| 37 | data - or if this is a directory inode */ |
| 38 | /* This also holds the _only_ dnode for symlinks/device nodes, |
| 39 | etc. */ |
| 40 | struct jffs2_full_dnode *metadata; |
| 41 | |
| 42 | /* Directory entries */ |
| 43 | struct jffs2_full_dirent *dents; |
| 44 | |
| 45 | /* The target path if this is the inode of a symlink */ |
| 46 | unsigned char *target; |
| 47 | |
| 48 | /* Some stuff we just have to keep in-core at all times, for each inode. */ |
| 49 | struct jffs2_inode_cache *inocache; |
| 50 | |
| 51 | uint16_t flags; |
| 52 | uint8_t usercompr; |
| 53 | struct inode vfs_inode; |
| 54 | }; |
| 55 | |
| 56 | #endif /* _JFFS2_FS_I */ |