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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>
43 lines
1.9 KiB
C
43 lines
1.9 KiB
C
/*
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* Copyright (C) International Business Machines Corp., 2000-2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _H_JFS_INODE
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#define _H_JFS_INODE
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extern struct inode *ialloc(struct inode *, umode_t);
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extern int jfs_fsync(struct file *, struct dentry *, int);
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extern int jfs_ioctl(struct inode *, struct file *,
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unsigned int, unsigned long);
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extern void jfs_read_inode(struct inode *);
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extern int jfs_commit_inode(struct inode *, int);
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extern int jfs_write_inode(struct inode*, int);
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extern void jfs_delete_inode(struct inode *);
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extern void jfs_dirty_inode(struct inode *);
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extern void jfs_truncate(struct inode *);
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extern void jfs_truncate_nolock(struct inode *, loff_t);
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extern void jfs_free_zero_link(struct inode *);
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extern struct dentry *jfs_get_parent(struct dentry *dentry);
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extern void jfs_set_inode_flags(struct inode *);
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extern struct address_space_operations jfs_aops;
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extern struct inode_operations jfs_dir_inode_operations;
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extern struct file_operations jfs_dir_operations;
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extern struct inode_operations jfs_file_inode_operations;
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extern struct file_operations jfs_file_operations;
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extern struct inode_operations jfs_symlink_inode_operations;
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extern struct dentry_operations jfs_ci_dentry_operations;
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#endif /* _H_JFS_INODE */
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