4bcf7091f9
We don't need the inherited flags since this action can be implied by setting the flags on directories where they wouldn't otherwise make sense. It reduces the number of extra flags by two. Also updated the list of flags to take account of one extra ext2/3 flag. Cc: Andreas Dilger <adilger@clusterfs.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
#ifndef _LINUX_IFLAGS_H
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#define _LINUX_IFLAGS_H
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/*
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* A universal set of inode flags.
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*
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* Originally taken from ext2/3 with additions for other filesystems.
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* Filesystems supporting this interface should interoperate with
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* the lsattr and chattr command line tools.
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*
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* This interface is supported in whole or in part by:
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* ext2
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* ext3
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* xfs
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* jfs
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* gfs2
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*
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*/
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#define IFLAGS_GET_IOC _IOR('f', 1, long)
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#define IFLAGS_SET_IOC _IOW('f', 2, long)
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/*
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* These values are provided for use as indices of an array
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* for use with the iflags_cvt function below
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*/
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enum {
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iflag_SecureRm = 0, /* Secure deletion */
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iflag_Unrm = 1, /* Undelete */
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iflag_Compress = 2, /* Compress file */
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iflag_Sync = 3, /* Synchronous updates */
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iflag_Immutable = 4, /* Immutable */
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iflag_Append = 5, /* Append */
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iflag_NoDump = 6, /* Don't dump file */
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iflag_NoAtime = 7, /* No atime updates */
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/* Reserved for compression usage */
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iflag_Dirty = 8,
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iflag_ComprBlk = 9, /* One or more compressed clusters */
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iflag_NoComp = 10, /* Don't compress */
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iflag_Ecompr = 11, /* Compression error */
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/* End of compression flags */
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iflag_Btree = 12, /* btree format dir */
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iflag_Index = 12, /* hash-indexed directory */
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iflag_Imagic = 13, /* AFS directory */
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iflag_JournalData = 14, /* file data should be journaled */
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iflag_NoTail = 15, /* file tail should not be merged */
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iflag_DirSync = 16, /* dirsync behaviour */
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iflag_TopDir = 17, /* Top of directory hierarchies */
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iflag_Extent = 19, /* Extents */
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iflag_DirectIO = 20, /* Always use direct I/O on this file */
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iflag_Reserved = 31 /* reserved for ext2/3 lib */
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};
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#define __IFL(x) (1<<(iflag_##x))
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#define IFLAG_SECRM __IFL(SecureRm) /* 0x00000001 */
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#define IFLAG_UNRM __IFL(Unrm) /* 0x00000002 */
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#define IFLAG_COMPR __IFL(Compr) /* 0x00000004 */
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#define IFLAG_SYNC __IFL(Sync) /* 0x00000008 */
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#define IFLAG_IMMUTABLE __IFL(Immutable) /* 0x00000010 */
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#define IFLAG_APPEND __IFL(Append) /* 0x00000020 */
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#define IFLAG_NODUMP __IFL(NoDump) /* 0x00000040 */
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#define IFLAG_NOATIME __IFL(NoAtime) /* 0x00000080 */
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#define IFLAG_DIRTY __IFL(Dirty) /* 0x00000100 */
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#define IFLAG_COMPRBLK __IFL(ComprBlk) /* 0x00000200 */
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#define IFLAG_NOCOMP __IFL(NoComp) /* 0x00000400 */
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#define IFLAG_ECOMPR __IFL(Ecompr) /* 0x00000800 */
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#define IFLAG_BTREE __IFL(Btree) /* 0x00001000 */
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#define IFLAG_INDEX __IFL(Index) /* 0x00001000 */
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#define IFLAG_IMAGIC __IFL(Imagic) /* 0x00002000 */
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#define IFLAG_JOURNAL_DATA __IFL(JournalData) /* 0x00004000 */
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#define IFLAG_NOTAIL __IFL(NoTail) /* 0x00008000 */
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#define IFLAG_DIRSYNC __IFL(DirSync) /* 0x00010000 */
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#define IFLAG_TOPDIR __IFL(TopDir) /* 0x00020000 */
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#define IFLAG_EXTENT __IFL(Extent) /* 0x00080000 */
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#define IFLAG_DIRECTIO __IFL(DirectIO) /* 0x00100000 */
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#define IFLAG_RESERVED __IFL(Reserved) /* 0x80000000 */
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#ifdef __KERNEL__
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/**
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* iflags_cvt
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* @table: A table of 32 u32 flags
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* @val: a 32 bit value to convert
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*
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* This function can be used to convert between IFLAGS values and
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* the filesystem's own flags values.
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*
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* Returns: the converted flags
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*/
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static inline u32 iflags_cvt(const u32 *table, u32 val)
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{
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u32 res = 0;
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while(val) {
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if (val & 1)
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res |= *table;
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table++;
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val >>= 1;
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}
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return res;
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}
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#endif /* __KERNEL__ */
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#endif /* _LINUX_IFLAGS_H */
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