C++ (Cpp) trace_xfs_dir2_sf_removename Examples

Example #1

File: xfs_dir2_sf.c Project: Cool-Joe/imx23-audio

/*
 * Remove an entry from a shortform directory.
 */
int						/* error */
xfs_dir2_sf_removename(
	xfs_da_args_t		*args)
{
	int			byteoff;	/* offset of removed entry */
	xfs_inode_t		*dp;		/* incore directory inode */
	int			entsize;	/* this entry's size */
	int			i;		/* shortform entry index */
	int			newsize;	/* new inode size */
	int			oldsize;	/* old inode size */
	xfs_dir2_sf_entry_t	*sfep;		/* shortform directory entry */
	xfs_dir2_sf_hdr_t	*sfp;		/* shortform structure */

	trace_xfs_dir2_sf_removename(args);

	dp = args->dp;

	ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
	oldsize = (int)dp->i_d.di_size;
	/*
	 * Bail out if the directory is way too short.
	 */
	if (oldsize < offsetof(xfs_dir2_sf_hdr_t, parent)) {
		ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount));
		return XFS_ERROR(EIO);
	}
	ASSERT(dp->i_df.if_bytes == oldsize);
	ASSERT(dp->i_df.if_u1.if_data != NULL);
	sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
	ASSERT(oldsize >= xfs_dir2_sf_hdr_size(sfp->i8count));
	/*
	 * Loop over the old directory entries.
	 * Find the one we're deleting.
	 */
	for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count;
				i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) {
		if (xfs_da_compname(args, sfep->name, sfep->namelen) ==
								XFS_CMP_EXACT) {
			ASSERT(xfs_dir2_sfe_get_ino(sfp, sfep) ==
			       args->inumber);
			break;
		}
	}
	/*
	 * Didn't find it.
	 */
	if (i == sfp->count)
		return XFS_ERROR(ENOENT);
	/*
	 * Calculate sizes.
	 */
	byteoff = (int)((char *)sfep - (char *)sfp);
	entsize = xfs_dir2_sf_entsize(sfp, args->namelen);
	newsize = oldsize - entsize;
	/*
	 * Copy the part if any after the removed entry, sliding it down.
	 */
	if (byteoff + entsize < oldsize)
		memmove((char *)sfp + byteoff, (char *)sfp + byteoff + entsize,
			oldsize - (byteoff + entsize));
	/*
	 * Fix up the header and file size.
	 */
	sfp->count--;
	dp->i_d.di_size = newsize;
	/*
	 * Reallocate, making it smaller.
	 */
	xfs_idata_realloc(dp, newsize - oldsize, XFS_DATA_FORK);
	sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
#if XFS_BIG_INUMS
	/*
	 * Are we changing inode number size?
	 */
	if (args->inumber > XFS_DIR2_MAX_SHORT_INUM) {
		if (sfp->i8count == 1)
			xfs_dir2_sf_toino4(args);
		else
			sfp->i8count--;
	}
#endif
	xfs_dir2_sf_check(args);
	xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
	return 0;
}

Example #2

File: xfs_dir2_sf.c Project: romanbb/android_kernel_lge_d851

int						/*       */
xfs_dir2_sf_removename(
	xfs_da_args_t		*args)
{
	int			byteoff;	/*                         */
	xfs_inode_t		*dp;		/*                        */
	int			entsize;	/*                   */
	int			i;		/*                       */
	int			newsize;	/*                */
	int			oldsize;	/*                */
	xfs_dir2_sf_entry_t	*sfep;		/*                           */
	xfs_dir2_sf_hdr_t	*sfp;		/*                     */

	trace_xfs_dir2_sf_removename(args);

	dp = args->dp;

	ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
	oldsize = (int)dp->i_d.di_size;
	/*
                                               
  */
	if (oldsize < offsetof(xfs_dir2_sf_hdr_t, parent)) {
		ASSERT(XFS_FORCED_SHUTDOWN(dp->i_mount));
		return XFS_ERROR(EIO);
	}
	ASSERT(dp->i_df.if_bytes == oldsize);
	ASSERT(dp->i_df.if_u1.if_data != NULL);
	sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
	ASSERT(oldsize >= xfs_dir2_sf_hdr_size(sfp->i8count));
	/*
                                        
                                
  */
	for (i = 0, sfep = xfs_dir2_sf_firstentry(sfp); i < sfp->count;
				i++, sfep = xfs_dir2_sf_nextentry(sfp, sfep)) {
		if (xfs_da_compname(args, sfep->name, sfep->namelen) ==
								XFS_CMP_EXACT) {
			ASSERT(xfs_dir2_sfe_get_ino(sfp, sfep) ==
			       args->inumber);
			break;
		}
	}
	/*
                   
  */
	if (i == sfp->count)
		return XFS_ERROR(ENOENT);
	/*
                    
  */
	byteoff = (int)((char *)sfep - (char *)sfp);
	entsize = xfs_dir2_sf_entsize(sfp, args->namelen);
	newsize = oldsize - entsize;
	/*
                                                                  
  */
	if (byteoff + entsize < oldsize)
		memmove((char *)sfp + byteoff, (char *)sfp + byteoff + entsize,
			oldsize - (byteoff + entsize));
	/*
                                    
  */
	sfp->count--;
	dp->i_d.di_size = newsize;
	/*
                                  
  */
	xfs_idata_realloc(dp, newsize - oldsize, XFS_DATA_FORK);
	sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
#if XFS_BIG_INUMS
	/*
                                      
  */
	if (args->inumber > XFS_DIR2_MAX_SHORT_INUM) {
		if (sfp->i8count == 1)
			xfs_dir2_sf_toino4(args);
		else
			sfp->i8count--;
	}
#endif
	xfs_dir2_sf_check(args);
	xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_DDATA);
	return 0;
}