static int ea_foreach(struct gfs2_inode *ip, ea_call_t ea_call, void *data) { struct buffer_head *bh, *eabh; __be64 *eablk, *end; int error; error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, &bh); if (error) return error; if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) { error = ea_foreach_i(ip, bh, ea_call, data); goto out; } if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_IN)) { error = -EIO; goto out; } eablk = (__be64 *)(bh->b_data + sizeof(struct gfs2_meta_header)); end = eablk + GFS2_SB(&ip->i_inode)->sd_inptrs; for (; eablk < end; eablk++) { u64 bn; if (!*eablk) break; bn = be64_to_cpu(*eablk); error = gfs2_meta_read(ip->i_gl, bn, DIO_WAIT, &eabh); if (error) break; error = ea_foreach_i(ip, eabh, ea_call, data); brelse(eabh); if (error) break; } out: brelse(bh); return error; }
int gfs2_inode_refresh(struct gfs2_inode *ip) { struct buffer_head *dibh; int error; error = gfs2_meta_inode_buffer(ip, &dibh); if (error) return error; if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) { brelse(dibh); return -EIO; } error = gfs2_dinode_in(ip, dibh->b_data); brelse(dibh); clear_bit(GIF_INVALID, &ip->i_flags); return error; }
static int ea_foreach_i(struct gfs2_inode *ip, struct buffer_head *bh, ea_call_t ea_call, void *data) { struct gfs2_ea_header *ea, *prev = NULL; int error = 0; if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_EA)) return -EIO; for (ea = GFS2_EA_BH2FIRST(bh);; prev = ea, ea = GFS2_EA2NEXT(ea)) { if (!GFS2_EA_REC_LEN(ea)) goto fail; if (!(bh->b_data <= (char *)ea && (char *)GFS2_EA2NEXT(ea) <= bh->b_data + bh->b_size)) goto fail; if (!GFS2_EATYPE_VALID(ea->ea_type)) goto fail; error = ea_call(ip, bh, ea, prev, data); if (error) return error; if (GFS2_EA_IS_LAST(ea)) { if ((char *)GFS2_EA2NEXT(ea) != bh->b_data + bh->b_size) goto fail; break; } } return error; fail: gfs2_consist_inode(ip); return -EIO; }