| Steven Whitehouse | 7ea9ea8 | 2006-03-31 15:01:28 -0500 | [diff] [blame^] | 1 | #ifndef _LINUX_IFLAGS_H |
| 2 | #define _LINUX_IFLAGS_H |
| 3 | |
| 4 | /* |
| 5 | * A universal set of inode flags. |
| 6 | * |
| 7 | * Originally taken from ext2/3 with additions for other filesystems. |
| 8 | * Filesystems supporting this interface should interoperate with |
| 9 | * the lsattr and chattr command line tools. |
| 10 | * |
| 11 | * This interface is supported in whole or in part by: |
| 12 | * ext2 |
| 13 | * ext3 |
| 14 | * xfs |
| 15 | * jfs |
| 16 | * gfs2 |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | #define IFLAGS_GET_IOC _IOR('f', 1, long) |
| 21 | #define IFLAGS_SET_IOC _IOW('f', 2, long) |
| 22 | |
| 23 | /* |
| 24 | * These values are provided for use as indices of an array |
| 25 | * for use with the iflags_cvt function below |
| 26 | */ |
| 27 | enum { |
| 28 | iflag_SecureRm = 0, /* Secure deletion */ |
| 29 | iflag_Unrm = 1, /* Undelete */ |
| 30 | iflag_Compress = 2, /* Compress file */ |
| 31 | iflag_Sync = 3, /* Synchronous updates */ |
| 32 | iflag_Immutable = 4, /* Immutable */ |
| 33 | iflag_Append = 5, /* Append */ |
| 34 | iflag_NoDump = 6, /* Don't dump file */ |
| 35 | iflag_NoAtime = 7, /* No atime updates */ |
| 36 | /* Reserved for compression usage */ |
| 37 | iflag_Dirty = 8, |
| 38 | iflag_ComprBlk = 9, /* One or more compressed clusters */ |
| 39 | iflag_NoComp = 10, /* Don't compress */ |
| 40 | iflag_Ecompr = 11, /* Compression error */ |
| 41 | /* End of compression flags */ |
| 42 | iflag_Btree = 12, /* btree format dir */ |
| 43 | iflag_Index = 12, /* hash-indexed directory */ |
| 44 | iflag_Imagic = 13, /* AFS directory */ |
| 45 | iflag_JournalData = 14, /* file data should be journaled */ |
| 46 | iflag_NoTail = 15, /* file tail should not be merged */ |
| 47 | iflag_DirSync = 16, /* dirsync behaviour */ |
| 48 | iflag_TopDir = 17, /* Top of directory hierarchies */ |
| 49 | iflag_DirectIO = 18, /* Always use direct I/O on this file */ |
| 50 | iflag_InheritDirectIO = 19, /* Set DirectIO on new files in dir */ |
| 51 | iflag_InheritJdata = 20, /* Set JournalData on create in dir */ |
| 52 | iflag_Reserved = 31 /* reserved for ext2/3 lib */ |
| 53 | }; |
| 54 | |
| 55 | #define __IFL(x) (1<<(iflag_##x)) |
| 56 | #define IFLAG_SECRM __IFL(SecureRm) /* 0x00000001 */ |
| 57 | #define IFLAG_UNRM __IFL(Unrm) /* 0x00000002 */ |
| 58 | #define IFLAG_COMPR __IFL(Compr) /* 0x00000004 */ |
| 59 | #define IFLAG_SYNC __IFL(Sync) /* 0x00000008 */ |
| 60 | #define IFLAG_IMMUTABLE __IFL(Immutable) /* 0x00000010 */ |
| 61 | #define IFLAG_APPEND __IFL(Append) /* 0x00000020 */ |
| 62 | #define IFLAG_NODUMP __IFL(NoDump) /* 0x00000040 */ |
| 63 | #define IFLAG_NOATIME __IFL(NoAtime) /* 0x00000080 */ |
| 64 | #define IFLAG_DIRTY __IFL(Dirty) /* 0x00000100 */ |
| 65 | #define IFLAG_COMPRBLK __IFL(ComprBlk) /* 0x00000200 */ |
| 66 | #define IFLAG_NOCOMP __IFL(NoComp) /* 0x00000400 */ |
| 67 | #define IFLAG_ECOMPR __IFL(Ecompr) /* 0x00000800 */ |
| 68 | #define IFLAG_BTREE __IFL(Btree) /* 0x00001000 */ |
| 69 | #define IFLAG_INDEX __IFL(Index) /* 0x00001000 */ |
| 70 | #define IFLAG_IMAGIC __IFL(Imagic) /* 0x00002000 */ |
| 71 | #define IFLAG_JOURNAL_DATA __IFL(JournalData) /* 0x00004000 */ |
| 72 | #define IFLAG_NOTAIL __IFL(NoTail) /* 0x00008000 */ |
| 73 | #define IFLAG_DIRSYNC __IFL(DirSync) /* 0x00010000 */ |
| 74 | #define IFLAG_TOPDIR __IFL(TopDir) /* 0x00020000 */ |
| 75 | #define IFLAG_DIRECTIO __IFL(DirectIO) /* 0x00040000 */ |
| 76 | #define IFLAG_INHERITDIRECTIO __IFL(InheritDirectIO) /* 0x00080000 */ |
| 77 | #define IFLAG_INHERITJDATA __IFL(InheritJdata) /* 0x00100000 */ |
| 78 | #define IFLAG_RESERVED __IFL(Reserved) /* 0x80000000 */ |
| 79 | |
| 80 | #ifdef __KERNEL__ |
| 81 | /** |
| 82 | * iflags_cvt |
| 83 | * @table: A table of 32 u32 flags |
| 84 | * @val: a 32 bit value to convert |
| 85 | * |
| 86 | * This function can be used to convert between IFLAGS values and |
| 87 | * the filesystem's own flags values. |
| 88 | * |
| 89 | * Returns: the converted flags |
| 90 | */ |
| 91 | static inline u32 iflags_cvt(const u32 *table, u32 val) |
| 92 | { |
| 93 | u32 res = 0; |
| 94 | while(val) { |
| 95 | if (val & 1) |
| 96 | res |= *table; |
| 97 | table++; |
| 98 | val >>= 1; |
| 99 | } |
| 100 | return res; |
| 101 | } |
| 102 | #endif /* __KERNEL__ */ |
| 103 | |
| 104 | #endif /* _LINUX_IFLAGS_H */ |