fs/jfs/xattr.c

62 	dxd_t new_ea;		/* dxd to replace ea when modifying xattr */
63 	struct metapage *mp;	/* metapage containing ea list */
64 	struct jfs_ea_list *xattr;	/* buffer containing ea list */
95 static inline int name_size(struct jfs_ea *ea)
97 	if (is_known_namespace(ea->name))
98 		return ea->namelen;
100 		return ea->namelen + XATTR_OS2_PREFIX_LEN;
103 static inline int copy_name(char *buffer, struct jfs_ea *ea)
105 	int len = ea->namelen;
107 	if (!is_known_namespace(ea->name)) {
112 	memcpy(buffer, ea->name, ea->namelen);
113 	buffer[ea->namelen] = 0;
133  *	ea	- dxd_t structure to be filled in with necessary EA information
138  *	and sets <ea> fields appropriately.  Otherwise, returns failure, EA will
144 			   int size, dxd_t * ea)
159 		if (!(ji->mode2 & INLINEEA) && !(ji->ea.flag & DXD_INLINE))
162 		DXDsize(ea, size);
163 		DXDlength(ea, 0);
164 		DXDaddress(ea, 0);
166 		ea->flag = DXD_INLINE;
169 		ea->flag = 0;
170 		DXDsize(ea, 0);
171 		DXDlength(ea, 0);
172 		DXDaddress(ea, 0);
175 		if (ji->ea.flag & DXD_INLINE)
193  *	ea	- dxd_t structure to be filled in appropriately with where the
202 		       dxd_t * ea)
220 		if (!ea_write_inline(ip, ealist, size, ea))
287 	ea->flag = DXD_EXTENT;
288 	DXDsize(ea, le32_to_cpu(ealist->size));
289 	DXDlength(ea, nblocks);
290 	DXDaddress(ea, blkno);
293 	if (ji->ea.flag & DXD_INLINE)
320 	int ea_size = sizeDXD(&ji->ea);
328 	if ((sizeDXD(&ji->ea) > sizeof (ji->i_inline_ea)))
365 	if (ji->ea.flag & DXD_INLINE)
368 	nbytes = sizeDXD(&ji->ea);
378 	nblocks = lengthDXD(&ji->ea) << sbi->l2nbperpage;
379 	blkno = addressDXD(&ji->ea) << sbi->l2nbperpage;
431 	int ea_size = sizeDXD(&ji->ea);
437 	/* When fsck.jfs clears a bad ea, it doesn't clear the size */
438 	if (ji->ea.flag == 0)
460 	} else if (ji->ea.flag & DXD_INLINE) {
469 		if (!(ji->ea.flag & DXD_EXTENT)) {
470 			jfs_error(sb, "invalid ea.flag\n");
547 	ea_buf->mp = read_metapage(inode, addressDXD(&ji->ea),
548 				   lengthDXD(&ji->ea) << sb->s_blocksize_bits,
616 		/* ->xattr must point to original ea's metapage */
625 	if (ji->ea.flag & DXD_EXTENT) {
626 		invalidate_dxd_metapages(inode, ji->ea);
627 		old_blocks = lengthDXD(&ji->ea);
631 		txEA(tid, inode, &ji->ea, &ea_buf->new_ea);
634 			if (ji->ea.flag & DXD_INLINE)
637 		ji->ea = ea_buf->new_ea;
639 		txEA(tid, inode, &ji->ea, NULL);
640 		if (ji->ea.flag & DXD_INLINE)
642 		ji->ea.flag = 0;
643 		ji->ea.size = 0;
659 	struct jfs_ea *ea, *old_ea = NULL, *next_ea = NULL;
682 		for (ea = FIRST_EA(ealist); ea < END_EALIST(ealist);
683 		     ea = NEXT_EA(ea)) {
684 			if ((namelen == ea->namelen) &&
685 			    (memcmp(name, ea->name, namelen) == 0)) {
691 				old_ea = ea;
692 				old_ea_size = EA_SIZE(ea);
693 				next_ea = NEXT_EA(ea);
695 				new_size += EA_SIZE(ea);
714 		 * We need to allocate more space for merged ea list.
726 	/* Remove old ea of the same name */
738 			/* Completely new ea list */
754 		ea = (struct jfs_ea *) ((char *) ealist + xattr_size);
755 		ea->flag = 0;
756 		ea->namelen = namelen;
757 		ea->valuelen = (cpu_to_le16(value_len));
758 		memcpy(ea->name, name, namelen);
759 		ea->name[namelen] = 0;
761 			memcpy(&ea->name[namelen + 1], value, value_len);
762 		xattr_size += EA_SIZE(ea);
776 	 * If we're left with an empty list, there's no ea
798 	struct jfs_ea *ea;
820 	for (ea = FIRST_EA(ealist); ea < END_EALIST(ealist); ea = NEXT_EA(ea))
821 		if ((namelen == ea->namelen) &&
822 		    memcmp(name, ea->name, namelen) == 0) {
824 			size = le16_to_cpu(ea->valuelen);
831 			value = ((char *) &ea->name) + ea->namelen + 1;
848 static inline int can_list(struct jfs_ea *ea)
850 	return (strncmp(ea->name, XATTR_TRUSTED_PREFIX,
862 	struct jfs_ea *ea;
879 	for (ea = FIRST_EA(ealist); ea < END_EALIST(ealist); ea = NEXT_EA(ea)) {
880 		if (can_list(ea))
881 			size += name_size(ea) + 1;
894 	for (ea = FIRST_EA(ealist); ea < END_EALIST(ealist); ea = NEXT_EA(ea)) {
895 		if (can_list(ea)) {
896 			int namelen = copy_name(buffer, ea);