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#ifndef _LINUX_IFLAGS_H
#define _LINUX_IFLAGS_H
/*
* A universal set of inode flags.
*
* Originally taken from ext2/3 with additions for other filesystems.
* Filesystems supporting this interface should interoperate with
* the lsattr and chattr command line tools.
*
* This interface is supported in whole or in part by:
* ext2
* ext3
* xfs
* jfs
* gfs2
*
*/
#define IFLAGS_GET_IOC _IOR('f', 1, long)
#define IFLAGS_SET_IOC _IOW('f', 2, long)
/*
* These values are provided for use as indices of an array
* for use with the iflags_cvt function below
*/
enum {
iflag_SecureRm = 0, /* Secure deletion */
iflag_Unrm = 1, /* Undelete */
iflag_Compress = 2, /* Compress file */
iflag_Sync = 3, /* Synchronous updates */
iflag_Immutable = 4, /* Immutable */
iflag_Append = 5, /* Append */
iflag_NoDump = 6, /* Don't dump file */
iflag_NoAtime = 7, /* No atime updates */
/* Reserved for compression usage */
iflag_Dirty = 8,
iflag_ComprBlk = 9, /* One or more compressed clusters */
iflag_NoComp = 10, /* Don't compress */
iflag_Ecompr = 11, /* Compression error */
/* End of compression flags */
iflag_Btree = 12, /* btree format dir */
iflag_Index = 12, /* hash-indexed directory */
iflag_Imagic = 13, /* AFS directory */
iflag_JournalData = 14, /* file data should be journaled */
iflag_NoTail = 15, /* file tail should not be merged */
iflag_DirSync = 16, /* dirsync behaviour */
iflag_TopDir = 17, /* Top of directory hierarchies */
iflag_Extent = 19, /* Extents */
iflag_DirectIO = 20, /* Always use direct I/O on this file */
iflag_Reserved = 31 /* reserved for ext2/3 lib */
};
#define __IFL(x) (1<<(iflag_##x))
#define IFLAG_SECRM __IFL(SecureRm) /* 0x00000001 */
#define IFLAG_UNRM __IFL(Unrm) /* 0x00000002 */
#define IFLAG_COMPR __IFL(Compr) /* 0x00000004 */
#define IFLAG_SYNC __IFL(Sync) /* 0x00000008 */
#define IFLAG_IMMUTABLE __IFL(Immutable) /* 0x00000010 */
#define IFLAG_APPEND __IFL(Append) /* 0x00000020 */
#define IFLAG_NODUMP __IFL(NoDump) /* 0x00000040 */
#define IFLAG_NOATIME __IFL(NoAtime) /* 0x00000080 */
#define IFLAG_DIRTY __IFL(Dirty) /* 0x00000100 */
#define IFLAG_COMPRBLK __IFL(ComprBlk) /* 0x00000200 */
#define IFLAG_NOCOMP __IFL(NoComp) /* 0x00000400 */
#define IFLAG_ECOMPR __IFL(Ecompr) /* 0x00000800 */
#define IFLAG_BTREE __IFL(Btree) /* 0x00001000 */
#define IFLAG_INDEX __IFL(Index) /* 0x00001000 */
#define IFLAG_IMAGIC __IFL(Imagic) /* 0x00002000 */
#define IFLAG_JOURNAL_DATA __IFL(JournalData) /* 0x00004000 */
#define IFLAG_NOTAIL __IFL(NoTail) /* 0x00008000 */
#define IFLAG_DIRSYNC __IFL(DirSync) /* 0x00010000 */
#define IFLAG_TOPDIR __IFL(TopDir) /* 0x00020000 */
#define IFLAG_EXTENT __IFL(Extent) /* 0x00080000 */
#define IFLAG_DIRECTIO __IFL(DirectIO) /* 0x00100000 */
#define IFLAG_RESERVED __IFL(Reserved) /* 0x80000000 */
#ifdef __KERNEL__
/**
* iflags_cvt
* @table: A table of 32 u32 flags
* @val: a 32 bit value to convert
*
* This function can be used to convert between IFLAGS values and
* the filesystem's own flags values.
*
* Returns: the converted flags
*/
static inline u32 iflags_cvt(const u32 *table, u32 val)
{
u32 res = 0;
while(val) {
if (val & 1)
res |= *table;
table++;
val >>= 1;
}
return res;
}
#endif /* __KERNEL__ */
#endif /* _LINUX_IFLAGS_H */
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