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| author | Herbert Poetzl <herbert@13thfloor.at> | 2006-02-09 09:09:16 -0600 |
|---|---|---|
| committer | Dave Kleikamp <shaggy@austin.ibm.com> | 2006-02-09 09:09:16 -0600 |
| commit | fa3241d24cf1182b0ffb6e4d412c3bc2a2ab7bf6 (patch) | |
| tree | b39000f89c6699612d64d98fd5739ca7feba8d8f /fs/jfs/jfs_inode.h | |
| parent | 1de87444f8f91009b726108c9a56600645ee8751 (diff) | |
| download | linux-fa3241d24cf1182b0ffb6e4d412c3bc2a2ab7bf6.tar.gz | |
JFS: ext2 inode attributes for jfs
ext2 inode attributes with relevance for jfs: 'a' EXT2_APPEND_FL -> append only 'i' EXT2_IMMUTABLE_FL -> immutable file 's' EXT2_SECRM_FL -> zero file 'u' EXT2_UNRM_FL -> allow for unrm 'A' EXT2_NOATIME_FL -> no access time 'D' EXT2_DIRSYNC_FL -> dirsync 'S' EXT2_SYNC_FL -> sync overview of jfs flags (partially for OS/2) value (OS/2) Linux ext2 attrs ------------------------------------------------ 0x00010000 IFJOURNAL - 0x00020000 ISPARSE used 0x00040000 INLINEEA used 0x00080000 - - JFS_NOATIME_FL 0x00100000 - - JFS_DIRSYNC_FL 0x00200000 - - JFS_SYNC_FL 0x00400000 - - JFS_SECRM_FL 0x00800000 ISWAPFILE - JFS_UNRM_FL 0x01000000 - - JFS_APPEND_FL 0x02000000 IREADONLY - JFS_IMMUTABLE_FL 0x04000000 IHIDDEN - - 0x08000000 ISYSTEM - - 0x10000000 - - 0x20000000 IDIRECTORY used 0x40000000 IARCHIVE - 0x80000000 INEWNAME - the implementation is straight forward, except for the fact that the attributes have to be mapped to match with the ext2 ones to avoid a separate tool for manipulating them (this could be avoided when using a separate flag field in the on-disk representation, but the overhead is minimal) a special jfs_ioctl is added to allow for the new JFS_IOC_GETFLAGS and JFS_IOC_SETFLAGS calls. a helper function jfs_set_inode_flags() to transfer the flags from the on-disk version to the inode minor changes to allow flag inheritance on inode creation, as well as a cleanup of the on-disk flags (including the new ones) beforementioned helper to map between ext2 and jfs versions of the new flags ... the JFS_SECRM_FL and JFS_UNRM_FL are not done yet and I'm not 100% sure they are worth the effort, the rest seems to work out of the box ... Signed-off-by: Herbert Poetzl <herbert@13thfloor.at> Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Diffstat (limited to 'fs/jfs/jfs_inode.h')
| -rw-r--r-- | fs/jfs/jfs_inode.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h index b54bac576cb3..095d471b9f9a 100644 --- a/fs/jfs/jfs_inode.h +++ b/fs/jfs/jfs_inode.h @@ -20,6 +20,8 @@ extern struct inode *ialloc(struct inode *, umode_t); extern int jfs_fsync(struct file *, struct dentry *, int); +extern int jfs_ioctl(struct inode *, struct file *, + unsigned int, unsigned long); extern void jfs_read_inode(struct inode *); extern int jfs_commit_inode(struct inode *, int); extern int jfs_write_inode(struct inode*, int); @@ -29,6 +31,7 @@ extern void jfs_truncate(struct inode *); extern void jfs_truncate_nolock(struct inode *, loff_t); extern void jfs_free_zero_link(struct inode *); extern struct dentry *jfs_get_parent(struct dentry *dentry); +extern void jfs_set_inode_flags(struct inode *); extern struct address_space_operations jfs_aops; extern struct inode_operations jfs_dir_inode_operations; |