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[GFS2] Update ioctl() to new interface
This is designed as a fs independent way to set flags on a particular inode. The values of the ioctl() and flags are designed to be identical to the ext2/3 values. Assuming that this plan is acceptable to people in general, the plan is to then move other fs across to using the same set of #defines, etc. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Steven Whitehouse
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Mar 31, 2006
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| #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) | ||
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||
| /* | ||
| * 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_DirectIO = 18, /* Always use direct I/O on this file */ | ||
| iflag_InheritDirectIO = 19, /* Set DirectIO on new files in dir */ | ||
| iflag_InheritJdata = 20, /* Set JournalData on create in dir */ | ||
| 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_DIRECTIO __IFL(DirectIO) /* 0x00040000 */ | ||
| #define IFLAG_INHERITDIRECTIO __IFL(InheritDirectIO) /* 0x00080000 */ | ||
| #define IFLAG_INHERITJDATA __IFL(InheritJdata) /* 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__ */ | ||
|
|
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| #endif /* _LINUX_IFLAGS_H */ |