diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_attr.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_attr.h | 89 |
1 files changed, 76 insertions, 13 deletions
diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h index c9c867e3406c..bbbc964f4e3c 100644 --- a/fs/xfs/libxfs/xfs_attr.h +++ b/fs/xfs/libxfs/xfs_attr.h @@ -443,21 +443,44 @@ struct xfs_attr_list_context { * to where it was and resume executing where it left off. */ enum xfs_delattr_state { - XFS_DAS_UNINIT = 0, /* No state has been set yet */ - XFS_DAS_RMTBLK, /* Removing remote blks */ - XFS_DAS_RM_NAME, /* Remove attr name */ - XFS_DAS_RM_SHRINK, /* We are shrinking the tree */ - XFS_DAS_FOUND_LBLK, /* We found leaf blk for attr */ - XFS_DAS_FOUND_NBLK, /* We found node blk for attr */ - XFS_DAS_FLIP_LFLAG, /* Flipped leaf INCOMPLETE attr flag */ - XFS_DAS_RM_LBLK, /* A rename is removing leaf blocks */ - XFS_DAS_RD_LEAF, /* Read in the new leaf */ - XFS_DAS_ALLOC_NODE, /* We are allocating node blocks */ - XFS_DAS_FLIP_NFLAG, /* Flipped node INCOMPLETE attr flag */ - XFS_DAS_RM_NBLK, /* A rename is removing node blocks */ - XFS_DAS_CLR_FLAG, /* Clear incomplete flag */ + XFS_DAS_UNINIT = 0, /* No state has been set yet */ + XFS_DAS_SF_ADD, /* Initial shortform set iter state */ + XFS_DAS_LEAF_ADD, /* Initial leaf form set iter state */ + XFS_DAS_NODE_ADD, /* Initial node form set iter state */ + XFS_DAS_RMTBLK, /* Removing remote blks */ + XFS_DAS_RM_NAME, /* Remove attr name */ + XFS_DAS_RM_SHRINK, /* We are shrinking the tree */ + XFS_DAS_FOUND_LBLK, /* We found leaf blk for attr */ + XFS_DAS_FOUND_NBLK, /* We found node blk for attr */ + XFS_DAS_FLIP_LFLAG, /* Flipped leaf INCOMPLETE attr flag */ + XFS_DAS_RM_LBLK, /* A rename is removing leaf blocks */ + XFS_DAS_RD_LEAF, /* Read in the new leaf */ + XFS_DAS_ALLOC_NODE, /* We are allocating node blocks */ + XFS_DAS_FLIP_NFLAG, /* Flipped node INCOMPLETE attr flag */ + XFS_DAS_RM_NBLK, /* A rename is removing node blocks */ + XFS_DAS_CLR_FLAG, /* Clear incomplete flag */ + XFS_DAS_DONE, /* finished operation */ }; +#define XFS_DAS_STRINGS \ + { XFS_DAS_UNINIT, "XFS_DAS_UNINIT" }, \ + { XFS_DAS_SF_ADD, "XFS_DAS_SF_ADD" }, \ + { XFS_DAS_LEAF_ADD, "XFS_DAS_LEAF_ADD" }, \ + { XFS_DAS_NODE_ADD, "XFS_DAS_NODE_ADD" }, \ + { XFS_DAS_RMTBLK, "XFS_DAS_RMTBLK" }, \ + { XFS_DAS_RM_NAME, "XFS_DAS_RM_NAME" }, \ + { XFS_DAS_RM_SHRINK, "XFS_DAS_RM_SHRINK" }, \ + { XFS_DAS_FOUND_LBLK, "XFS_DAS_FOUND_LBLK" }, \ + { XFS_DAS_FOUND_NBLK, "XFS_DAS_FOUND_NBLK" }, \ + { XFS_DAS_FLIP_LFLAG, "XFS_DAS_FLIP_LFLAG" }, \ + { XFS_DAS_RM_LBLK, "XFS_DAS_RM_LBLK" }, \ + { XFS_DAS_RD_LEAF, "XFS_DAS_RD_LEAF" }, \ + { XFS_DAS_ALLOC_NODE, "XFS_DAS_ALLOC_NODE" }, \ + { XFS_DAS_FLIP_NFLAG, "XFS_DAS_FLIP_NFLAG" }, \ + { XFS_DAS_RM_NBLK, "XFS_DAS_RM_NBLK" }, \ + { XFS_DAS_CLR_FLAG, "XFS_DAS_CLR_FLAG" }, \ + { XFS_DAS_DONE, "XFS_DAS_DONE" } + /* * Defines for xfs_attr_item.xattri_flags */ @@ -530,4 +553,44 @@ void xfs_attri_destroy_cache(void); int __init xfs_attrd_init_cache(void); void xfs_attrd_destroy_cache(void); +/* + * Check to see if the attr should be upgraded from non-existent or shortform to + * single-leaf-block attribute list. + */ +static inline bool +xfs_attr_is_shortform( + struct xfs_inode *ip) +{ + return ip->i_afp->if_format == XFS_DINODE_FMT_LOCAL || + (ip->i_afp->if_format == XFS_DINODE_FMT_EXTENTS && + ip->i_afp->if_nextents == 0); +} + +static inline enum xfs_delattr_state +xfs_attr_init_add_state(struct xfs_da_args *args) +{ + + /* + * When called from the completion of a attr remove to determine the + * next state, the attribute fork may be null. This can occur only occur + * on a pure remove, but we grab the next state before we check if a + * replace operation is being performed. If we are called from any other + * context, i_afp is guaranteed to exist. Hence if the attr fork is + * null, we were called from a pure remove operation and so we are done. + */ + if (!args->dp->i_afp) + return XFS_DAS_DONE; + if (xfs_attr_is_shortform(args->dp)) + return XFS_DAS_SF_ADD; + if (xfs_attr_is_leaf(args->dp)) + return XFS_DAS_LEAF_ADD; + return XFS_DAS_NODE_ADD; +} + +static inline enum xfs_delattr_state +xfs_attr_init_replace_state(struct xfs_da_args *args) +{ + return xfs_attr_init_add_state(args); +} + #endif /* __XFS_ATTR_H__ */ |