73 typedef int (*ea_call_t) (struct gfs2_inode *ip, struct buffer_head *bh,
77 static int ea_foreach_i(struct gfs2_inode *ip, struct buffer_head *bh,  in ea_foreach_i()  argument
83 	if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_EA))  in ea_foreach_i()
95 		error = ea_call(ip, bh, ea, prev, data);  in ea_foreach_i()
110 	gfs2_consist_inode(ip);  in ea_foreach_i()
114 static int ea_foreach(struct gfs2_inode *ip, ea_call_t ea_call, void *data)  in ea_foreach()  argument
120 	error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, 0, &bh);  in ea_foreach()
124 	if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) {  in ea_foreach()
125 		error = ea_foreach_i(ip, bh, ea_call, data);  in ea_foreach()
129 	if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_IN)) {  in ea_foreach()
135 	end = eablk + GFS2_SB(&ip->i_inode)->sd_inptrs;  in ea_foreach()
144 		error = gfs2_meta_read(ip->i_gl, bn, DIO_WAIT, 0, &eabh);  in ea_foreach()
147 		error = ea_foreach_i(ip, eabh, ea_call, data);  in ea_foreach()
164 static int ea_find_i(struct gfs2_inode *ip, struct buffer_head *bh,  in ea_find_i()  argument
188 static int gfs2_ea_find(struct gfs2_inode *ip, int type, const char *name,  in gfs2_ea_find()  argument
201 	error = ea_foreach(ip, ea_find_i, &ef);  in gfs2_ea_find()
210  * @ip:
223 static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,  in ea_dealloc_unstuffed()  argument
228 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);  in ea_dealloc_unstuffed()
258 		gfs2_consist_inode(ip);  in ea_dealloc_unstuffed()
271 	gfs2_trans_add_meta(ip->i_gl, bh);  in ea_dealloc_unstuffed()
283 				gfs2_free_meta(ip, rgd, bstart, blen);  in ea_dealloc_unstuffed()
289 		gfs2_add_inode_blocks(&ip->i_inode, -1);  in ea_dealloc_unstuffed()
292 		gfs2_free_meta(ip, rgd, bstart, blen);  in ea_dealloc_unstuffed()
307 	ip->i_inode.i_ctime = current_time(&ip->i_inode);  in ea_dealloc_unstuffed()
308 	__mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC);  in ea_dealloc_unstuffed()
317 static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,  in ea_remove_unstuffed()  argument
323 	error = gfs2_rindex_update(GFS2_SB(&ip->i_inode));  in ea_remove_unstuffed()
327 	error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);  in ea_remove_unstuffed()
331 	error = ea_dealloc_unstuffed(ip, bh, ea, prev, (leave) ? &error : NULL);  in ea_remove_unstuffed()
333 	gfs2_quota_unhold(ip);  in ea_remove_unstuffed()
343 static int ea_list_i(struct gfs2_inode *ip, struct buffer_head *bh,  in ea_list_i()  argument
400 	struct gfs2_inode *ip = GFS2_I(d_inode(dentry));  in gfs2_listxattr()  local
411 	error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);  in gfs2_listxattr()
415 	if (ip->i_eattr) {  in gfs2_listxattr()
418 		error = ea_foreach(ip, ea_list_i, &ei);  in gfs2_listxattr()
431  * @ip: The GFS2 inode
439 static int gfs2_iter_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea,  in gfs2_iter_unstuffed()  argument
442 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);  in gfs2_iter_unstuffed()
457 		error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs), 0, 0,  in gfs2_iter_unstuffed()
490 			gfs2_trans_add_meta(ip->i_gl, bh[x]);  in gfs2_iter_unstuffed()
504 static int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el,  in gfs2_ea_get_copy()  argument
516 	ret = gfs2_iter_unstuffed(ip, el->el_ea, NULL, data);  in gfs2_ea_get_copy()
522 int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **ppdata)  in gfs2_xattr_acl_get()  argument
529 	error = gfs2_ea_find(ip, GFS2_EATYPE_SYS, name, &el);  in gfs2_xattr_acl_get()
543 	error = gfs2_ea_get_copy(ip, &el, data, len);  in gfs2_xattr_acl_get()
566 	struct gfs2_inode *ip = GFS2_I(inode);  in __gfs2_xattr_get()  local
570 	if (!ip->i_eattr)  in __gfs2_xattr_get()
575 	error = gfs2_ea_find(ip, type, name, &el);  in __gfs2_xattr_get()
581 		error = gfs2_ea_get_copy(ip, &el, buffer, size);  in __gfs2_xattr_get()
593 	struct gfs2_inode *ip = GFS2_I(inode);  in gfs2_xattr_get()  local
599 	if (!gfs2_glock_is_locked_by_me(ip->i_gl)) {  in gfs2_xattr_get()
600 		ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);  in gfs2_xattr_get()
614  * @ip: A pointer to the inode that's getting extended attributes
620 static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp)  in ea_alloc_blk()  argument
622 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);  in ea_alloc_blk()
628 	error = gfs2_alloc_blocks(ip, &block, &n, 0, NULL);  in ea_alloc_blk()
632 	*bhp = gfs2_meta_new(ip->i_gl, block);  in ea_alloc_blk()
633 	gfs2_trans_add_meta(ip->i_gl, *bhp);  in ea_alloc_blk()
643 	gfs2_add_inode_blocks(&ip->i_inode, 1);  in ea_alloc_blk()
651  * @ip: inode that is being modified
660 static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea,  in ea_write()  argument
663 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);  in ea_write()
690 			error = gfs2_alloc_blocks(ip, &block, &n, 0, NULL);  in ea_write()
694 			bh = gfs2_meta_new(ip->i_gl, block);  in ea_write()
695 			gfs2_trans_add_meta(ip->i_gl, bh);  in ea_write()
698 			gfs2_add_inode_blocks(&ip->i_inode, 1);  in ea_write()
720 typedef int (*ea_skeleton_call_t) (struct gfs2_inode *ip,
723 static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er,  in ea_alloc_skeleton()  argument
730 	error = gfs2_rindex_update(GFS2_SB(&ip->i_inode));  in ea_alloc_skeleton()
734 	error = gfs2_quota_lock_check(ip, &ap);  in ea_alloc_skeleton()
738 	error = gfs2_inplace_reserve(ip, &ap);  in ea_alloc_skeleton()
742 	error = gfs2_trans_begin(GFS2_SB(&ip->i_inode),  in ea_alloc_skeleton()
743 				 blks + gfs2_rg_blocks(ip, blks) +  in ea_alloc_skeleton()
748 	error = skeleton_call(ip, er, private);  in ea_alloc_skeleton()
752 	ip->i_inode.i_ctime = current_time(&ip->i_inode);  in ea_alloc_skeleton()
753 	__mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC);  in ea_alloc_skeleton()
756 	gfs2_trans_end(GFS2_SB(&ip->i_inode));  in ea_alloc_skeleton()
758 	gfs2_inplace_release(ip);  in ea_alloc_skeleton()
760 	gfs2_quota_unlock(ip);  in ea_alloc_skeleton()
764 static int ea_init_i(struct gfs2_inode *ip, struct gfs2_ea_request *er,  in ea_init_i()  argument
770 	error = ea_alloc_blk(ip, &bh);  in ea_init_i()
774 	ip->i_eattr = bh->b_blocknr;  in ea_init_i()
775 	error = ea_write(ip, GFS2_EA_BH2FIRST(bh), er);  in ea_init_i()
784  * @ip:
790 static int ea_init(struct gfs2_inode *ip, int type, const char *name,  in ea_init()  argument
794 	unsigned int jbsize = GFS2_SB(&ip->i_inode)->sd_jbsize;  in ea_init()
806 	return ea_alloc_skeleton(ip, &er, blks, ea_init_i, NULL);  in ea_init()
826 static void ea_set_remove_stuffed(struct gfs2_inode *ip,  in ea_set_remove_stuffed()  argument
833 	gfs2_trans_add_meta(ip->i_gl, el->el_bh);  in ea_set_remove_stuffed()
840 		gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), GFS2_EA2NEXT(prev) == ea);  in ea_set_remove_stuffed()
860 static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh,  in ea_set_simple_noalloc()  argument
866 	error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + 2 * RES_EATTR, 0);  in ea_set_simple_noalloc()
870 	gfs2_trans_add_meta(ip->i_gl, bh);  in ea_set_simple_noalloc()
875 	ea_write(ip, ea, er);  in ea_set_simple_noalloc()
878 		ea_set_remove_stuffed(ip, es->es_el);  in ea_set_simple_noalloc()
880 	ip->i_inode.i_ctime = current_time(&ip->i_inode);  in ea_set_simple_noalloc()
881 	__mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC);  in ea_set_simple_noalloc()
883 	gfs2_trans_end(GFS2_SB(&ip->i_inode));  in ea_set_simple_noalloc()
887 static int ea_set_simple_alloc(struct gfs2_inode *ip,  in ea_set_simple_alloc()  argument
894 	gfs2_trans_add_meta(ip->i_gl, es->es_bh);  in ea_set_simple_alloc()
899 	error = ea_write(ip, ea, er);  in ea_set_simple_alloc()
904 		ea_set_remove_stuffed(ip, es->es_el);  in ea_set_simple_alloc()
909 static int ea_set_simple(struct gfs2_inode *ip, struct buffer_head *bh,  in ea_set_simple()  argument
918 	stuffed = ea_calc_size(GFS2_SB(&ip->i_inode), es->es_er->er_name_len,  in ea_set_simple()
925 			error = ea_remove_unstuffed(ip, bh, ea, prev, 1);  in ea_set_simple()
936 		error = ea_set_simple_noalloc(ip, bh, ea, es);  in ea_set_simple()
945 					GFS2_SB(&ip->i_inode)->sd_jbsize);  in ea_set_simple()
947 		error = ea_alloc_skeleton(ip, es->es_er, blks,  in ea_set_simple()
956 static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er,  in ea_set_block()  argument
959 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);  in ea_set_block()
965 	if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) {  in ea_set_block()
968 		error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, 0,  in ea_set_block()
990 		gfs2_trans_add_meta(ip->i_gl, indbh);  in ea_set_block()
994 		error = gfs2_alloc_blocks(ip, &blk, &n, 0, NULL);  in ea_set_block()
998 		indbh = gfs2_meta_new(ip->i_gl, blk);  in ea_set_block()
999 		gfs2_trans_add_meta(ip->i_gl, indbh);  in ea_set_block()
1004 		*eablk = cpu_to_be64(ip->i_eattr);  in ea_set_block()
1005 		ip->i_eattr = blk;  in ea_set_block()
1006 		ip->i_diskflags |= GFS2_DIF_EA_INDIRECT;  in ea_set_block()
1007 		gfs2_add_inode_blocks(&ip->i_inode, 1);  in ea_set_block()
1012 	error = ea_alloc_blk(ip, &newbh);  in ea_set_block()
1017 	error = ea_write(ip, GFS2_EA_BH2FIRST(newbh), er);  in ea_set_block()
1023 		ea_set_remove_stuffed(ip, private);  in ea_set_block()
1030 static int ea_set_i(struct gfs2_inode *ip, int type, const char *name,  in ea_set_i()  argument
1048 	error = ea_foreach(ip, ea_set_simple, &es);  in ea_set_i()
1054 	if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT))  in ea_set_i()
1056 	if (GFS2_EAREQ_SIZE_STUFFED(&er) > GFS2_SB(&ip->i_inode)->sd_jbsize)  in ea_set_i()
1057 		blks += DIV_ROUND_UP(er.er_data_len, GFS2_SB(&ip->i_inode)->sd_jbsize);  in ea_set_i()
1059 	return ea_alloc_skeleton(ip, &er, blks, ea_set_block, el);  in ea_set_i()
1062 static int ea_set_remove_unstuffed(struct gfs2_inode *ip,  in ea_set_remove_unstuffed()  argument
1067 		gfs2_assert_withdraw(GFS2_SB(&ip->i_inode),  in ea_set_remove_unstuffed()
1071 	return ea_remove_unstuffed(ip, el->el_bh, el->el_ea, el->el_prev, 0);  in ea_set_remove_unstuffed()
1074 static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el)  in ea_remove_stuffed()  argument
1080 	error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0);  in ea_remove_stuffed()
1084 	gfs2_trans_add_meta(ip->i_gl, el->el_bh);  in ea_remove_stuffed()
1098 	ip->i_inode.i_ctime = current_time(&ip->i_inode);  in ea_remove_stuffed()
1099 	__mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC);  in ea_remove_stuffed()
1101 	gfs2_trans_end(GFS2_SB(&ip->i_inode));  in ea_remove_stuffed()
1108  * @ip: The inode
1119 static int gfs2_xattr_remove(struct gfs2_inode *ip, int type, const char *name)  in gfs2_xattr_remove()  argument
1124 	if (!ip->i_eattr)  in gfs2_xattr_remove()
1127 	error = gfs2_ea_find(ip, type, name, &el);  in gfs2_xattr_remove()
1134 		error = ea_remove_stuffed(ip, &el);  in gfs2_xattr_remove()
1136 		error = ea_remove_unstuffed(ip, el.el_bh, el.el_ea, el.el_prev, 0);  in gfs2_xattr_remove()
1145  * @ip: The inode
1160 	struct gfs2_inode *ip = GFS2_I(inode);  in __gfs2_xattr_set()  local
1172 		error = gfs2_xattr_remove(ip, type, name);  in __gfs2_xattr_set()
1181 	if (!ip->i_eattr) {  in __gfs2_xattr_set()
1184 		return ea_init(ip, type, name, value, size);  in __gfs2_xattr_set()
1187 	error = gfs2_ea_find(ip, type, name, &el);  in __gfs2_xattr_set()
1192 		if (ip->i_diskflags & GFS2_DIF_APPENDONLY) {  in __gfs2_xattr_set()
1200 			error = ea_set_i(ip, type, name, value, size, &el);  in __gfs2_xattr_set()
1202 				ea_set_remove_unstuffed(ip, &el);  in __gfs2_xattr_set()
1211 		error = ea_set_i(ip, type, name, value, size, NULL);  in __gfs2_xattr_set()
1221 	struct gfs2_inode *ip = GFS2_I(inode);  in gfs2_xattr_set()  local
1225 	ret = gfs2_qa_get(ip);  in gfs2_xattr_set()
1231 	if (!gfs2_glock_is_locked_by_me(ip->i_gl)) {  in gfs2_xattr_set()
1232 		ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);  in gfs2_xattr_set()
1236 		if (WARN_ON_ONCE(ip->i_gl->gl_state != LM_ST_EXCLUSIVE)) {  in gfs2_xattr_set()
1246 	gfs2_qa_put(ip);  in gfs2_xattr_set()
1250 static int ea_dealloc_indirect(struct gfs2_inode *ip)  in ea_dealloc_indirect()  argument
1252 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);  in ea_dealloc_indirect()
1270 	error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, 0, &indbh);  in ea_dealloc_indirect()
1293 				gfs2_rlist_add(ip, &rlist, bstart);  in ea_dealloc_indirect()
1300 		gfs2_rlist_add(ip, &rlist, bstart);  in ea_dealloc_indirect()
1320 	gfs2_trans_add_meta(ip->i_gl, indbh);  in ea_dealloc_indirect()
1338 				gfs2_free_meta(ip, rgd, bstart, blen);  in ea_dealloc_indirect()
1345 		gfs2_add_inode_blocks(&ip->i_inode, -1);  in ea_dealloc_indirect()
1348 		gfs2_free_meta(ip, rgd, bstart, blen);  in ea_dealloc_indirect()
1350 	ip->i_diskflags &= ~GFS2_DIF_EA_INDIRECT;  in ea_dealloc_indirect()
1352 	error = gfs2_meta_inode_buffer(ip, &dibh);  in ea_dealloc_indirect()
1354 		gfs2_trans_add_meta(ip->i_gl, dibh);  in ea_dealloc_indirect()
1355 		gfs2_dinode_out(ip, dibh->b_data);  in ea_dealloc_indirect()
1370 static int ea_dealloc_block(struct gfs2_inode *ip)  in ea_dealloc_block()  argument
1372 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);  in ea_dealloc_block()
1382 	rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr, 1);  in ea_dealloc_block()
1384 		gfs2_consist_inode(ip);  in ea_dealloc_block()
1397 	gfs2_free_meta(ip, rgd, ip->i_eattr, 1);  in ea_dealloc_block()
1399 	ip->i_eattr = 0;  in ea_dealloc_block()
1400 	gfs2_add_inode_blocks(&ip->i_inode, -1);  in ea_dealloc_block()
1402 	error = gfs2_meta_inode_buffer(ip, &dibh);  in ea_dealloc_block()
1404 		gfs2_trans_add_meta(ip->i_gl, dibh);  in ea_dealloc_block()
1405 		gfs2_dinode_out(ip, dibh->b_data);  in ea_dealloc_block()
1418  * @ip: the inode
1423 int gfs2_ea_dealloc(struct gfs2_inode *ip)  in gfs2_ea_dealloc()  argument
1427 	error = gfs2_rindex_update(GFS2_SB(&ip->i_inode));  in gfs2_ea_dealloc()
1431 	error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);  in gfs2_ea_dealloc()
1435 	error = ea_foreach(ip, ea_dealloc_unstuffed, NULL);  in gfs2_ea_dealloc()
1439 	if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) {  in gfs2_ea_dealloc()
1440 		error = ea_dealloc_indirect(ip);  in gfs2_ea_dealloc()
1445 	error = ea_dealloc_block(ip);  in gfs2_ea_dealloc()
1448 	gfs2_quota_unhold(ip);  in gfs2_ea_dealloc()