Lines Matching refs:c
58 static void do_calc_lpt_geom(struct ubifs_info *c) in do_calc_lpt_geom() argument
63 n = c->main_lebs + c->max_leb_cnt - c->leb_cnt; in do_calc_lpt_geom()
66 c->lpt_hght = 1; in do_calc_lpt_geom()
69 c->lpt_hght += 1; in do_calc_lpt_geom()
73 c->pnode_cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT); in do_calc_lpt_geom()
75 n = DIV_ROUND_UP(c->pnode_cnt, UBIFS_LPT_FANOUT); in do_calc_lpt_geom()
76 c->nnode_cnt = n; in do_calc_lpt_geom()
77 for (i = 1; i < c->lpt_hght; i++) { in do_calc_lpt_geom()
79 c->nnode_cnt += n; in do_calc_lpt_geom()
82 c->space_bits = fls(c->leb_size) - 3; in do_calc_lpt_geom()
83 c->lpt_lnum_bits = fls(c->lpt_lebs); in do_calc_lpt_geom()
84 c->lpt_offs_bits = fls(c->leb_size - 1); in do_calc_lpt_geom()
85 c->lpt_spc_bits = fls(c->leb_size); in do_calc_lpt_geom()
87 n = DIV_ROUND_UP(c->max_leb_cnt, UBIFS_LPT_FANOUT); in do_calc_lpt_geom()
88 c->pcnt_bits = fls(n - 1); in do_calc_lpt_geom()
90 c->lnum_bits = fls(c->max_leb_cnt - 1); in do_calc_lpt_geom()
93 (c->big_lpt ? c->pcnt_bits : 0) + in do_calc_lpt_geom()
94 (c->space_bits * 2 + 1) * UBIFS_LPT_FANOUT; in do_calc_lpt_geom()
95 c->pnode_sz = (bits + 7) / 8; in do_calc_lpt_geom()
98 (c->big_lpt ? c->pcnt_bits : 0) + in do_calc_lpt_geom()
99 (c->lpt_lnum_bits + c->lpt_offs_bits) * UBIFS_LPT_FANOUT; in do_calc_lpt_geom()
100 c->nnode_sz = (bits + 7) / 8; in do_calc_lpt_geom()
103 c->lpt_lebs * c->lpt_spc_bits * 2; in do_calc_lpt_geom()
104 c->ltab_sz = (bits + 7) / 8; in do_calc_lpt_geom()
107 c->lnum_bits * c->lsave_cnt; in do_calc_lpt_geom()
108 c->lsave_sz = (bits + 7) / 8; in do_calc_lpt_geom()
111 c->lpt_sz = (long long)c->pnode_cnt * c->pnode_sz; in do_calc_lpt_geom()
112 c->lpt_sz += (long long)c->nnode_cnt * c->nnode_sz; in do_calc_lpt_geom()
113 c->lpt_sz += c->ltab_sz; in do_calc_lpt_geom()
114 if (c->big_lpt) in do_calc_lpt_geom()
115 c->lpt_sz += c->lsave_sz; in do_calc_lpt_geom()
118 sz = c->lpt_sz; in do_calc_lpt_geom()
119 per_leb_wastage = max_t(int, c->pnode_sz, c->nnode_sz); in do_calc_lpt_geom()
122 while (sz > c->leb_size) { in do_calc_lpt_geom()
124 sz -= c->leb_size; in do_calc_lpt_geom()
127 tot_wastage += ALIGN(sz, c->min_io_size) - sz; in do_calc_lpt_geom()
128 c->lpt_sz += tot_wastage; in do_calc_lpt_geom()
137 int ubifs_calc_lpt_geom(struct ubifs_info *c) in ubifs_calc_lpt_geom() argument
142 do_calc_lpt_geom(c); in ubifs_calc_lpt_geom()
145 sz = c->lpt_sz * 2; /* Must have at least 2 times the size */ in ubifs_calc_lpt_geom()
146 lebs_needed = div_u64(sz + c->leb_size - 1, c->leb_size); in ubifs_calc_lpt_geom()
147 if (lebs_needed > c->lpt_lebs) { in ubifs_calc_lpt_geom()
148 ubifs_err(c, "too few LPT LEBs"); in ubifs_calc_lpt_geom()
153 if (c->ltab_sz > c->leb_size) { in ubifs_calc_lpt_geom()
154 ubifs_err(c, "LPT ltab too big"); in ubifs_calc_lpt_geom()
158 c->check_lpt_free = c->big_lpt; in ubifs_calc_lpt_geom()
174 static int calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs, in calc_dflt_lpt_geom() argument
181 c->lpt_lebs = UBIFS_MIN_LPT_LEBS; in calc_dflt_lpt_geom()
182 c->main_lebs = *main_lebs - c->lpt_lebs; in calc_dflt_lpt_geom()
183 if (c->main_lebs <= 0) in calc_dflt_lpt_geom()
187 c->big_lpt = 0; in calc_dflt_lpt_geom()
193 do_calc_lpt_geom(c); in calc_dflt_lpt_geom()
196 if (c->lpt_sz > c->leb_size) { in calc_dflt_lpt_geom()
198 c->big_lpt = 1; in calc_dflt_lpt_geom()
199 do_calc_lpt_geom(c); in calc_dflt_lpt_geom()
204 sz = c->lpt_sz * 4; /* Allow 4 times the size */ in calc_dflt_lpt_geom()
205 lebs_needed = div_u64(sz + c->leb_size - 1, c->leb_size); in calc_dflt_lpt_geom()
206 if (lebs_needed > c->lpt_lebs) { in calc_dflt_lpt_geom()
208 c->lpt_lebs = lebs_needed; in calc_dflt_lpt_geom()
209 c->main_lebs = *main_lebs - c->lpt_lebs; in calc_dflt_lpt_geom()
210 if (c->main_lebs <= 0) in calc_dflt_lpt_geom()
212 do_calc_lpt_geom(c); in calc_dflt_lpt_geom()
215 if (c->ltab_sz > c->leb_size) { in calc_dflt_lpt_geom()
216 ubifs_err(c, "LPT ltab too big"); in calc_dflt_lpt_geom()
219 *main_lebs = c->main_lebs; in calc_dflt_lpt_geom()
220 *big_lpt = c->big_lpt; in calc_dflt_lpt_geom()
350 void ubifs_pack_pnode(struct ubifs_info *c, void *buf, in ubifs_pack_pnode() argument
358 if (c->big_lpt) in ubifs_pack_pnode()
359 pack_bits(&addr, &pos, pnode->num, c->pcnt_bits); in ubifs_pack_pnode()
362 c->space_bits); in ubifs_pack_pnode()
364 c->space_bits); in ubifs_pack_pnode()
371 c->pnode_sz - UBIFS_LPT_CRC_BYTES); in ubifs_pack_pnode()
383 void ubifs_pack_nnode(struct ubifs_info *c, void *buf, in ubifs_pack_nnode() argument
391 if (c->big_lpt) in ubifs_pack_nnode()
392 pack_bits(&addr, &pos, nnode->num, c->pcnt_bits); in ubifs_pack_nnode()
397 lnum = c->lpt_last + 1; in ubifs_pack_nnode()
398 pack_bits(&addr, &pos, lnum - c->lpt_first, c->lpt_lnum_bits); in ubifs_pack_nnode()
400 c->lpt_offs_bits); in ubifs_pack_nnode()
403 c->nnode_sz - UBIFS_LPT_CRC_BYTES); in ubifs_pack_nnode()
415 void ubifs_pack_ltab(struct ubifs_info *c, void *buf, in ubifs_pack_ltab() argument
423 for (i = 0; i < c->lpt_lebs; i++) { in ubifs_pack_ltab()
424 pack_bits(&addr, &pos, ltab[i].free, c->lpt_spc_bits); in ubifs_pack_ltab()
425 pack_bits(&addr, &pos, ltab[i].dirty, c->lpt_spc_bits); in ubifs_pack_ltab()
428 c->ltab_sz - UBIFS_LPT_CRC_BYTES); in ubifs_pack_ltab()
440 void ubifs_pack_lsave(struct ubifs_info *c, void *buf, int *lsave) in ubifs_pack_lsave() argument
447 for (i = 0; i < c->lsave_cnt; i++) in ubifs_pack_lsave()
448 pack_bits(&addr, &pos, lsave[i], c->lnum_bits); in ubifs_pack_lsave()
450 c->lsave_sz - UBIFS_LPT_CRC_BYTES); in ubifs_pack_lsave()
462 void ubifs_add_lpt_dirt(struct ubifs_info *c, int lnum, int dirty) in ubifs_add_lpt_dirt() argument
467 lnum, dirty, c->ltab[lnum - c->lpt_first].dirty); in ubifs_add_lpt_dirt()
468 ubifs_assert(lnum >= c->lpt_first && lnum <= c->lpt_last); in ubifs_add_lpt_dirt()
469 c->ltab[lnum - c->lpt_first].dirty += dirty; in ubifs_add_lpt_dirt()
479 static void set_ltab(struct ubifs_info *c, int lnum, int free, int dirty) in set_ltab() argument
482 lnum, c->ltab[lnum - c->lpt_first].free, in set_ltab()
483 c->ltab[lnum - c->lpt_first].dirty, free, dirty); in set_ltab()
484 ubifs_assert(lnum >= c->lpt_first && lnum <= c->lpt_last); in set_ltab()
485 c->ltab[lnum - c->lpt_first].free = free; in set_ltab()
486 c->ltab[lnum - c->lpt_first].dirty = dirty; in set_ltab()
494 void ubifs_add_nnode_dirt(struct ubifs_info *c, struct ubifs_nnode *nnode) in ubifs_add_nnode_dirt() argument
499 ubifs_add_lpt_dirt(c, np->nbranch[nnode->iip].lnum, in ubifs_add_nnode_dirt()
500 c->nnode_sz); in ubifs_add_nnode_dirt()
502 ubifs_add_lpt_dirt(c, c->lpt_lnum, c->nnode_sz); in ubifs_add_nnode_dirt()
503 if (!(c->lpt_drty_flgs & LTAB_DIRTY)) { in ubifs_add_nnode_dirt()
504 c->lpt_drty_flgs |= LTAB_DIRTY; in ubifs_add_nnode_dirt()
505 ubifs_add_lpt_dirt(c, c->ltab_lnum, c->ltab_sz); in ubifs_add_nnode_dirt()
515 static void add_pnode_dirt(struct ubifs_info *c, struct ubifs_pnode *pnode) in add_pnode_dirt() argument
517 ubifs_add_lpt_dirt(c, pnode->parent->nbranch[pnode->iip].lnum, in add_pnode_dirt()
518 c->pnode_sz); in add_pnode_dirt()
558 static int calc_nnode_num_from_parent(const struct ubifs_info *c, in calc_nnode_num_from_parent() argument
565 shft = (c->lpt_hght - parent->level) * UBIFS_LPT_FANOUT_SHIFT; in calc_nnode_num_from_parent()
583 static int calc_pnode_num_from_parent(const struct ubifs_info *c, in calc_pnode_num_from_parent() argument
586 int i, n = c->lpt_hght - 1, pnum = parent->num, num = 0; in calc_pnode_num_from_parent()
608 int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first, in ubifs_create_dflt_lpt() argument
619 err = calc_dflt_lpt_geom(c, main_lebs, big_lpt); in ubifs_create_dflt_lpt()
622 *lpt_lebs = c->lpt_lebs; in ubifs_create_dflt_lpt()
625 c->lpt_first = lpt_first; in ubifs_create_dflt_lpt()
627 c->lpt_last = lpt_first + c->lpt_lebs - 1; in ubifs_create_dflt_lpt()
629 c->main_first = c->leb_cnt - *main_lebs; in ubifs_create_dflt_lpt()
631 lsave = kmalloc(sizeof(int) * c->lsave_cnt, GFP_KERNEL); in ubifs_create_dflt_lpt()
634 buf = vmalloc(c->leb_size); in ubifs_create_dflt_lpt()
635 ltab = vmalloc(sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs); in ubifs_create_dflt_lpt()
641 ubifs_assert(!c->ltab); in ubifs_create_dflt_lpt()
642 c->ltab = ltab; /* Needed by set_ltab */ in ubifs_create_dflt_lpt()
645 for (i = 0; i < c->lpt_lebs; i++) { in ubifs_create_dflt_lpt()
646 ltab[i].free = c->leb_size; in ubifs_create_dflt_lpt()
655 cnt = c->pnode_cnt; in ubifs_create_dflt_lpt()
661 node_sz = ALIGN(ubifs_idx_node_sz(c, 1), 8); in ubifs_create_dflt_lpt()
662 iopos = ALIGN(node_sz, c->min_io_size); in ubifs_create_dflt_lpt()
663 pnode->lprops[0].free = c->leb_size - iopos; in ubifs_create_dflt_lpt()
668 iopos = ALIGN(node_sz, c->min_io_size); in ubifs_create_dflt_lpt()
669 pnode->lprops[1].free = c->leb_size - iopos; in ubifs_create_dflt_lpt()
673 pnode->lprops[i].free = c->leb_size; in ubifs_create_dflt_lpt()
676 ubifs_pack_pnode(c, p, pnode); in ubifs_create_dflt_lpt()
677 p += c->pnode_sz; in ubifs_create_dflt_lpt()
678 len = c->pnode_sz; in ubifs_create_dflt_lpt()
682 pnode->lprops[0].free = c->leb_size; in ubifs_create_dflt_lpt()
686 pnode->lprops[1].free = c->leb_size; in ubifs_create_dflt_lpt()
696 bsz = c->pnode_sz; /* Size of nodes in level below */ in ubifs_create_dflt_lpt()
700 if (len + c->pnode_sz > c->leb_size) { in ubifs_create_dflt_lpt()
701 alen = ALIGN(len, c->min_io_size); in ubifs_create_dflt_lpt()
702 set_ltab(c, lnum, c->leb_size - alen, alen - len); in ubifs_create_dflt_lpt()
704 err = ubifs_leb_change(c, lnum++, buf, alen); in ubifs_create_dflt_lpt()
710 ubifs_pack_pnode(c, p, pnode); in ubifs_create_dflt_lpt()
711 p += c->pnode_sz; in ubifs_create_dflt_lpt()
712 len += c->pnode_sz; in ubifs_create_dflt_lpt()
729 if (len + c->nnode_sz > c->leb_size) { in ubifs_create_dflt_lpt()
730 alen = ALIGN(len, c->min_io_size); in ubifs_create_dflt_lpt()
731 set_ltab(c, lnum, c->leb_size - alen, in ubifs_create_dflt_lpt()
734 err = ubifs_leb_change(c, lnum++, buf, alen); in ubifs_create_dflt_lpt()
742 c->lpt_lnum = lnum; in ubifs_create_dflt_lpt()
743 c->lpt_offs = len; in ubifs_create_dflt_lpt()
748 if (boffs + bsz > c->leb_size) { in ubifs_create_dflt_lpt()
762 ubifs_pack_nnode(c, p, nnode); in ubifs_create_dflt_lpt()
763 p += c->nnode_sz; in ubifs_create_dflt_lpt()
764 len += c->nnode_sz; in ubifs_create_dflt_lpt()
771 bsz = c->nnode_sz; in ubifs_create_dflt_lpt()
777 if (len + c->lsave_sz > c->leb_size) { in ubifs_create_dflt_lpt()
778 alen = ALIGN(len, c->min_io_size); in ubifs_create_dflt_lpt()
779 set_ltab(c, lnum, c->leb_size - alen, alen - len); in ubifs_create_dflt_lpt()
781 err = ubifs_leb_change(c, lnum++, buf, alen); in ubifs_create_dflt_lpt()
788 c->lsave_lnum = lnum; in ubifs_create_dflt_lpt()
789 c->lsave_offs = len; in ubifs_create_dflt_lpt()
791 for (i = 0; i < c->lsave_cnt && i < *main_lebs; i++) in ubifs_create_dflt_lpt()
792 lsave[i] = c->main_first + i; in ubifs_create_dflt_lpt()
793 for (; i < c->lsave_cnt; i++) in ubifs_create_dflt_lpt()
794 lsave[i] = c->main_first; in ubifs_create_dflt_lpt()
796 ubifs_pack_lsave(c, p, lsave); in ubifs_create_dflt_lpt()
797 p += c->lsave_sz; in ubifs_create_dflt_lpt()
798 len += c->lsave_sz; in ubifs_create_dflt_lpt()
802 if (len + c->ltab_sz > c->leb_size) { in ubifs_create_dflt_lpt()
803 alen = ALIGN(len, c->min_io_size); in ubifs_create_dflt_lpt()
804 set_ltab(c, lnum, c->leb_size - alen, alen - len); in ubifs_create_dflt_lpt()
806 err = ubifs_leb_change(c, lnum++, buf, alen); in ubifs_create_dflt_lpt()
813 c->ltab_lnum = lnum; in ubifs_create_dflt_lpt()
814 c->ltab_offs = len; in ubifs_create_dflt_lpt()
817 len += c->ltab_sz; in ubifs_create_dflt_lpt()
818 alen = ALIGN(len, c->min_io_size); in ubifs_create_dflt_lpt()
819 set_ltab(c, lnum, c->leb_size - alen, alen - len); in ubifs_create_dflt_lpt()
821 ubifs_pack_ltab(c, p, ltab); in ubifs_create_dflt_lpt()
822 p += c->ltab_sz; in ubifs_create_dflt_lpt()
826 err = ubifs_leb_change(c, lnum, buf, alen); in ubifs_create_dflt_lpt()
830 c->nhead_lnum = lnum; in ubifs_create_dflt_lpt()
831 c->nhead_offs = ALIGN(len, c->min_io_size); in ubifs_create_dflt_lpt()
833 dbg_lp("space_bits %d", c->space_bits); in ubifs_create_dflt_lpt()
834 dbg_lp("lpt_lnum_bits %d", c->lpt_lnum_bits); in ubifs_create_dflt_lpt()
835 dbg_lp("lpt_offs_bits %d", c->lpt_offs_bits); in ubifs_create_dflt_lpt()
836 dbg_lp("lpt_spc_bits %d", c->lpt_spc_bits); in ubifs_create_dflt_lpt()
837 dbg_lp("pcnt_bits %d", c->pcnt_bits); in ubifs_create_dflt_lpt()
838 dbg_lp("lnum_bits %d", c->lnum_bits); in ubifs_create_dflt_lpt()
839 dbg_lp("pnode_sz %d", c->pnode_sz); in ubifs_create_dflt_lpt()
840 dbg_lp("nnode_sz %d", c->nnode_sz); in ubifs_create_dflt_lpt()
841 dbg_lp("ltab_sz %d", c->ltab_sz); in ubifs_create_dflt_lpt()
842 dbg_lp("lsave_sz %d", c->lsave_sz); in ubifs_create_dflt_lpt()
843 dbg_lp("lsave_cnt %d", c->lsave_cnt); in ubifs_create_dflt_lpt()
844 dbg_lp("lpt_hght %d", c->lpt_hght); in ubifs_create_dflt_lpt()
845 dbg_lp("big_lpt %d", c->big_lpt); in ubifs_create_dflt_lpt()
846 dbg_lp("LPT root is at %d:%d", c->lpt_lnum, c->lpt_offs); in ubifs_create_dflt_lpt()
847 dbg_lp("LPT head is at %d:%d", c->nhead_lnum, c->nhead_offs); in ubifs_create_dflt_lpt()
848 dbg_lp("LPT ltab is at %d:%d", c->ltab_lnum, c->ltab_offs); in ubifs_create_dflt_lpt()
849 if (c->big_lpt) in ubifs_create_dflt_lpt()
850 dbg_lp("LPT lsave is at %d:%d", c->lsave_lnum, c->lsave_offs); in ubifs_create_dflt_lpt()
852 c->ltab = NULL; in ubifs_create_dflt_lpt()
869 static void update_cats(struct ubifs_info *c, struct ubifs_pnode *pnode) in update_cats() argument
879 ubifs_add_to_cat(c, &pnode->lprops[i], cat); in update_cats()
893 static void replace_cats(struct ubifs_info *c, struct ubifs_pnode *old_pnode, in replace_cats() argument
901 ubifs_replace_cat(c, &old_pnode->lprops[i], in replace_cats()
914 static int check_lpt_crc(const struct ubifs_info *c, void *buf, int len) in check_lpt_crc() argument
924 ubifs_err(c, "invalid crc in LPT node: crc %hx calc %hx", in check_lpt_crc()
941 static int check_lpt_type(const struct ubifs_info *c, uint8_t **addr, in check_lpt_type() argument
948 ubifs_err(c, "invalid type (%d) in LPT node type %d", in check_lpt_type()
964 static int unpack_pnode(const struct ubifs_info *c, void *buf, in unpack_pnode() argument
970 err = check_lpt_type(c, &addr, &pos, UBIFS_LPT_PNODE); in unpack_pnode()
973 if (c->big_lpt) in unpack_pnode()
974 pnode->num = ubifs_unpack_bits(&addr, &pos, c->pcnt_bits); in unpack_pnode()
978 lprops->free = ubifs_unpack_bits(&addr, &pos, c->space_bits); in unpack_pnode()
980 lprops->dirty = ubifs_unpack_bits(&addr, &pos, c->space_bits); in unpack_pnode()
987 lprops->flags |= ubifs_categorize_lprops(c, lprops); in unpack_pnode()
989 err = check_lpt_crc(c, buf, c->pnode_sz); in unpack_pnode()
1001 int ubifs_unpack_nnode(const struct ubifs_info *c, void *buf, in ubifs_unpack_nnode() argument
1007 err = check_lpt_type(c, &addr, &pos, UBIFS_LPT_NNODE); in ubifs_unpack_nnode()
1010 if (c->big_lpt) in ubifs_unpack_nnode()
1011 nnode->num = ubifs_unpack_bits(&addr, &pos, c->pcnt_bits); in ubifs_unpack_nnode()
1015 lnum = ubifs_unpack_bits(&addr, &pos, c->lpt_lnum_bits) + in ubifs_unpack_nnode()
1016 c->lpt_first; in ubifs_unpack_nnode()
1017 if (lnum == c->lpt_last + 1) in ubifs_unpack_nnode()
1021 c->lpt_offs_bits); in ubifs_unpack_nnode()
1023 err = check_lpt_crc(c, buf, c->nnode_sz); in ubifs_unpack_nnode()
1034 static int unpack_ltab(const struct ubifs_info *c, void *buf) in unpack_ltab() argument
1039 err = check_lpt_type(c, &addr, &pos, UBIFS_LPT_LTAB); in unpack_ltab()
1042 for (i = 0; i < c->lpt_lebs; i++) { in unpack_ltab()
1043 int free = ubifs_unpack_bits(&addr, &pos, c->lpt_spc_bits); in unpack_ltab()
1044 int dirty = ubifs_unpack_bits(&addr, &pos, c->lpt_spc_bits); in unpack_ltab()
1046 if (free < 0 || free > c->leb_size || dirty < 0 || in unpack_ltab()
1047 dirty > c->leb_size || free + dirty > c->leb_size) in unpack_ltab()
1050 c->ltab[i].free = free; in unpack_ltab()
1051 c->ltab[i].dirty = dirty; in unpack_ltab()
1052 c->ltab[i].tgc = 0; in unpack_ltab()
1053 c->ltab[i].cmt = 0; in unpack_ltab()
1055 err = check_lpt_crc(c, buf, c->ltab_sz); in unpack_ltab()
1066 static int unpack_lsave(const struct ubifs_info *c, void *buf) in unpack_lsave() argument
1071 err = check_lpt_type(c, &addr, &pos, UBIFS_LPT_LSAVE); in unpack_lsave()
1074 for (i = 0; i < c->lsave_cnt; i++) { in unpack_lsave()
1075 int lnum = ubifs_unpack_bits(&addr, &pos, c->lnum_bits); in unpack_lsave()
1077 if (lnum < c->main_first || lnum >= c->leb_cnt) in unpack_lsave()
1079 c->lsave[i] = lnum; in unpack_lsave()
1081 err = check_lpt_crc(c, buf, c->lsave_sz); in unpack_lsave()
1094 static int validate_nnode(const struct ubifs_info *c, struct ubifs_nnode *nnode, in validate_nnode() argument
1099 if (c->big_lpt) { in validate_nnode()
1100 int num = calc_nnode_num_from_parent(c, parent, iip); in validate_nnode()
1105 lvl = parent ? parent->level - 1 : c->lpt_hght; in validate_nnode()
1109 max_offs = c->leb_size - c->pnode_sz; in validate_nnode()
1111 max_offs = c->leb_size - c->nnode_sz; in validate_nnode()
1121 if (lnum < c->lpt_first || lnum > c->lpt_last) in validate_nnode()
1138 static int validate_pnode(const struct ubifs_info *c, struct ubifs_pnode *pnode, in validate_pnode() argument
1143 if (c->big_lpt) { in validate_pnode()
1144 int num = calc_pnode_num_from_parent(c, parent, iip); in validate_pnode()
1153 if (free < 0 || free > c->leb_size || free % c->min_io_size || in validate_pnode()
1156 if (dirty < 0 || dirty > c->leb_size || (dirty & 7)) in validate_pnode()
1158 if (dirty + free > c->leb_size) in validate_pnode()
1172 static void set_pnode_lnum(const struct ubifs_info *c, in set_pnode_lnum() argument
1177 lnum = (pnode->num << UBIFS_LPT_FANOUT_SHIFT) + c->main_first; in set_pnode_lnum()
1179 if (lnum >= c->leb_cnt) in set_pnode_lnum()
1193 int ubifs_read_nnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip) in ubifs_read_nnode() argument
1197 void *buf = c->lpt_nod_buf; in ubifs_read_nnode()
1205 lnum = c->lpt_lnum; in ubifs_read_nnode()
1206 offs = c->lpt_offs; in ubifs_read_nnode()
1220 if (c->big_lpt) in ubifs_read_nnode()
1221 nnode->num = calc_nnode_num_from_parent(c, parent, iip); in ubifs_read_nnode()
1223 err = ubifs_leb_read(c, lnum, buf, offs, c->nnode_sz, 1); in ubifs_read_nnode()
1226 err = ubifs_unpack_nnode(c, buf, nnode); in ubifs_read_nnode()
1230 err = validate_nnode(c, nnode, parent, iip); in ubifs_read_nnode()
1233 if (!c->big_lpt) in ubifs_read_nnode()
1234 nnode->num = calc_nnode_num_from_parent(c, parent, iip); in ubifs_read_nnode()
1239 c->nroot = nnode; in ubifs_read_nnode()
1240 nnode->level = c->lpt_hght; in ubifs_read_nnode()
1247 ubifs_err(c, "error %d reading nnode at %d:%d", err, lnum, offs); in ubifs_read_nnode()
1261 static int read_pnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip) in read_pnode() argument
1265 void *buf = c->lpt_nod_buf; in read_pnode()
1283 if (c->big_lpt) in read_pnode()
1284 pnode->num = calc_pnode_num_from_parent(c, parent, iip); in read_pnode()
1288 lprops->free = c->leb_size; in read_pnode()
1289 lprops->flags = ubifs_categorize_lprops(c, lprops); in read_pnode()
1292 err = ubifs_leb_read(c, lnum, buf, offs, c->pnode_sz, 1); in read_pnode()
1295 err = unpack_pnode(c, buf, pnode); in read_pnode()
1299 err = validate_pnode(c, pnode, parent, iip); in read_pnode()
1302 if (!c->big_lpt) in read_pnode()
1303 pnode->num = calc_pnode_num_from_parent(c, parent, iip); in read_pnode()
1307 set_pnode_lnum(c, pnode); in read_pnode()
1308 c->pnodes_have += 1; in read_pnode()
1312 ubifs_err(c, "error %d reading pnode at %d:%d", err, lnum, offs); in read_pnode()
1313 ubifs_dump_pnode(c, pnode, parent, iip); in read_pnode()
1315 ubifs_err(c, "calc num: %d", calc_pnode_num_from_parent(c, parent, iip)); in read_pnode()
1326 static int read_ltab(struct ubifs_info *c) in read_ltab() argument
1331 buf = vmalloc(c->ltab_sz); in read_ltab()
1334 err = ubifs_leb_read(c, c->ltab_lnum, buf, c->ltab_offs, c->ltab_sz, 1); in read_ltab()
1337 err = unpack_ltab(c, buf); in read_ltab()
1349 static int read_lsave(struct ubifs_info *c) in read_lsave() argument
1354 buf = vmalloc(c->lsave_sz); in read_lsave()
1357 err = ubifs_leb_read(c, c->lsave_lnum, buf, c->lsave_offs, in read_lsave()
1358 c->lsave_sz, 1); in read_lsave()
1361 err = unpack_lsave(c, buf); in read_lsave()
1364 for (i = 0; i < c->lsave_cnt; i++) { in read_lsave()
1365 int lnum = c->lsave[i]; in read_lsave()
1372 if (lnum >= c->leb_cnt) in read_lsave()
1374 lprops = ubifs_lpt_lookup(c, lnum); in read_lsave()
1394 struct ubifs_nnode *ubifs_get_nnode(struct ubifs_info *c, in ubifs_get_nnode() argument
1405 err = ubifs_read_nnode(c, parent, iip); in ubifs_get_nnode()
1420 struct ubifs_pnode *ubifs_get_pnode(struct ubifs_info *c, in ubifs_get_pnode() argument
1431 err = read_pnode(c, parent, iip); in ubifs_get_pnode()
1434 update_cats(c, branch->pnode); in ubifs_get_pnode()
1446 struct ubifs_lprops *ubifs_lpt_lookup(struct ubifs_info *c, int lnum) in ubifs_lpt_lookup() argument
1452 if (!c->nroot) { in ubifs_lpt_lookup()
1453 err = ubifs_read_nnode(c, NULL, 0); in ubifs_lpt_lookup()
1457 nnode = c->nroot; in ubifs_lpt_lookup()
1458 i = lnum - c->main_first; in ubifs_lpt_lookup()
1459 shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT; in ubifs_lpt_lookup()
1460 for (h = 1; h < c->lpt_hght; h++) { in ubifs_lpt_lookup()
1463 nnode = ubifs_get_nnode(c, nnode, iip); in ubifs_lpt_lookup()
1468 pnode = ubifs_get_pnode(c, nnode, iip); in ubifs_lpt_lookup()
1485 static struct ubifs_nnode *dirty_cow_nnode(struct ubifs_info *c, in dirty_cow_nnode() argument
1494 c->dirty_nn_cnt += 1; in dirty_cow_nnode()
1495 ubifs_add_nnode_dirt(c, nnode); in dirty_cow_nnode()
1520 c->dirty_nn_cnt += 1; in dirty_cow_nnode()
1521 ubifs_add_nnode_dirt(c, nnode); in dirty_cow_nnode()
1525 c->nroot = n; in dirty_cow_nnode()
1536 static struct ubifs_pnode *dirty_cow_pnode(struct ubifs_info *c, in dirty_cow_pnode() argument
1544 c->dirty_pn_cnt += 1; in dirty_cow_pnode()
1545 add_pnode_dirt(c, pnode); in dirty_cow_pnode()
1558 replace_cats(c, pnode, p); in dirty_cow_pnode()
1563 c->dirty_pn_cnt += 1; in dirty_cow_pnode()
1564 add_pnode_dirt(c, pnode); in dirty_cow_pnode()
1577 struct ubifs_lprops *ubifs_lpt_lookup_dirty(struct ubifs_info *c, int lnum) in ubifs_lpt_lookup_dirty() argument
1583 if (!c->nroot) { in ubifs_lpt_lookup_dirty()
1584 err = ubifs_read_nnode(c, NULL, 0); in ubifs_lpt_lookup_dirty()
1588 nnode = c->nroot; in ubifs_lpt_lookup_dirty()
1589 nnode = dirty_cow_nnode(c, nnode); in ubifs_lpt_lookup_dirty()
1592 i = lnum - c->main_first; in ubifs_lpt_lookup_dirty()
1593 shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT; in ubifs_lpt_lookup_dirty()
1594 for (h = 1; h < c->lpt_hght; h++) { in ubifs_lpt_lookup_dirty()
1597 nnode = ubifs_get_nnode(c, nnode, iip); in ubifs_lpt_lookup_dirty()
1600 nnode = dirty_cow_nnode(c, nnode); in ubifs_lpt_lookup_dirty()
1605 pnode = ubifs_get_pnode(c, nnode, iip); in ubifs_lpt_lookup_dirty()
1608 pnode = dirty_cow_pnode(c, pnode); in ubifs_lpt_lookup_dirty()
1625 static int lpt_init_rd(struct ubifs_info *c) in lpt_init_rd() argument
1629 c->ltab = vmalloc(sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs); in lpt_init_rd()
1630 if (!c->ltab) in lpt_init_rd()
1633 i = max_t(int, c->nnode_sz, c->pnode_sz); in lpt_init_rd()
1634 c->lpt_nod_buf = kmalloc(i, GFP_KERNEL); in lpt_init_rd()
1635 if (!c->lpt_nod_buf) in lpt_init_rd()
1639 c->lpt_heap[i].arr = kmalloc(sizeof(void *) * LPT_HEAP_SZ, in lpt_init_rd()
1641 if (!c->lpt_heap[i].arr) in lpt_init_rd()
1643 c->lpt_heap[i].cnt = 0; in lpt_init_rd()
1644 c->lpt_heap[i].max_cnt = LPT_HEAP_SZ; in lpt_init_rd()
1647 c->dirty_idx.arr = kmalloc(sizeof(void *) * LPT_HEAP_SZ, GFP_KERNEL); in lpt_init_rd()
1648 if (!c->dirty_idx.arr) in lpt_init_rd()
1650 c->dirty_idx.cnt = 0; in lpt_init_rd()
1651 c->dirty_idx.max_cnt = LPT_HEAP_SZ; in lpt_init_rd()
1653 err = read_ltab(c); in lpt_init_rd()
1657 dbg_lp("space_bits %d", c->space_bits); in lpt_init_rd()
1658 dbg_lp("lpt_lnum_bits %d", c->lpt_lnum_bits); in lpt_init_rd()
1659 dbg_lp("lpt_offs_bits %d", c->lpt_offs_bits); in lpt_init_rd()
1660 dbg_lp("lpt_spc_bits %d", c->lpt_spc_bits); in lpt_init_rd()
1661 dbg_lp("pcnt_bits %d", c->pcnt_bits); in lpt_init_rd()
1662 dbg_lp("lnum_bits %d", c->lnum_bits); in lpt_init_rd()
1663 dbg_lp("pnode_sz %d", c->pnode_sz); in lpt_init_rd()
1664 dbg_lp("nnode_sz %d", c->nnode_sz); in lpt_init_rd()
1665 dbg_lp("ltab_sz %d", c->ltab_sz); in lpt_init_rd()
1666 dbg_lp("lsave_sz %d", c->lsave_sz); in lpt_init_rd()
1667 dbg_lp("lsave_cnt %d", c->lsave_cnt); in lpt_init_rd()
1668 dbg_lp("lpt_hght %d", c->lpt_hght); in lpt_init_rd()
1669 dbg_lp("big_lpt %d", c->big_lpt); in lpt_init_rd()
1670 dbg_lp("LPT root is at %d:%d", c->lpt_lnum, c->lpt_offs); in lpt_init_rd()
1671 dbg_lp("LPT head is at %d:%d", c->nhead_lnum, c->nhead_offs); in lpt_init_rd()
1672 dbg_lp("LPT ltab is at %d:%d", c->ltab_lnum, c->ltab_offs); in lpt_init_rd()
1673 if (c->big_lpt) in lpt_init_rd()
1674 dbg_lp("LPT lsave is at %d:%d", c->lsave_lnum, c->lsave_offs); in lpt_init_rd()
1687 static int lpt_init_wr(struct ubifs_info *c) in lpt_init_wr() argument
1691 c->ltab_cmt = vmalloc(sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs); in lpt_init_wr()
1692 if (!c->ltab_cmt) in lpt_init_wr()
1695 c->lpt_buf = vmalloc(c->leb_size); in lpt_init_wr()
1696 if (!c->lpt_buf) in lpt_init_wr()
1699 if (c->big_lpt) { in lpt_init_wr()
1700 c->lsave = kmalloc(sizeof(int) * c->lsave_cnt, GFP_NOFS); in lpt_init_wr()
1701 if (!c->lsave) in lpt_init_wr()
1703 err = read_lsave(c); in lpt_init_wr()
1708 for (i = 0; i < c->lpt_lebs; i++) in lpt_init_wr()
1709 if (c->ltab[i].free == c->leb_size) { in lpt_init_wr()
1710 err = ubifs_leb_unmap(c, i + c->lpt_first); in lpt_init_wr()
1730 int ubifs_lpt_init(struct ubifs_info *c, int rd, int wr) in ubifs_lpt_init() argument
1735 err = lpt_init_rd(c); in ubifs_lpt_init()
1741 err = lpt_init_wr(c); in ubifs_lpt_init()
1750 ubifs_lpt_free(c, 1); in ubifs_lpt_init()
1752 ubifs_lpt_free(c, 0); in ubifs_lpt_init()
1791 static struct ubifs_nnode *scan_get_nnode(struct ubifs_info *c, in scan_get_nnode() argument
1797 void *buf = c->lpt_nod_buf; in scan_get_nnode()
1818 if (c->big_lpt) in scan_get_nnode()
1819 nnode->num = calc_nnode_num_from_parent(c, parent, iip); in scan_get_nnode()
1821 err = ubifs_leb_read(c, branch->lnum, buf, branch->offs, in scan_get_nnode()
1822 c->nnode_sz, 1); in scan_get_nnode()
1825 err = ubifs_unpack_nnode(c, buf, nnode); in scan_get_nnode()
1829 err = validate_nnode(c, nnode, parent, iip); in scan_get_nnode()
1832 if (!c->big_lpt) in scan_get_nnode()
1833 nnode->num = calc_nnode_num_from_parent(c, parent, iip); in scan_get_nnode()
1850 static struct ubifs_pnode *scan_get_pnode(struct ubifs_info *c, in scan_get_pnode() argument
1856 void *buf = c->lpt_nod_buf; in scan_get_pnode()
1878 if (c->big_lpt) in scan_get_pnode()
1879 pnode->num = calc_pnode_num_from_parent(c, parent, iip); in scan_get_pnode()
1883 lprops->free = c->leb_size; in scan_get_pnode()
1884 lprops->flags = ubifs_categorize_lprops(c, lprops); in scan_get_pnode()
1887 ubifs_assert(branch->lnum >= c->lpt_first && in scan_get_pnode()
1888 branch->lnum <= c->lpt_last); in scan_get_pnode()
1889 ubifs_assert(branch->offs >= 0 && branch->offs < c->leb_size); in scan_get_pnode()
1890 err = ubifs_leb_read(c, branch->lnum, buf, branch->offs, in scan_get_pnode()
1891 c->pnode_sz, 1); in scan_get_pnode()
1894 err = unpack_pnode(c, buf, pnode); in scan_get_pnode()
1898 err = validate_pnode(c, pnode, parent, iip); in scan_get_pnode()
1901 if (!c->big_lpt) in scan_get_pnode()
1902 pnode->num = calc_pnode_num_from_parent(c, parent, iip); in scan_get_pnode()
1905 set_pnode_lnum(c, pnode); in scan_get_pnode()
1919 int ubifs_lpt_scan_nolock(struct ubifs_info *c, int start_lnum, int end_lnum, in ubifs_lpt_scan_nolock() argument
1929 if (start_lnum >= c->leb_cnt) in ubifs_lpt_scan_nolock()
1930 start_lnum = c->main_first; in ubifs_lpt_scan_nolock()
1933 ubifs_assert(start_lnum >= c->main_first && start_lnum < c->leb_cnt); in ubifs_lpt_scan_nolock()
1934 ubifs_assert(end_lnum >= c->main_first && end_lnum < c->leb_cnt); in ubifs_lpt_scan_nolock()
1936 if (!c->nroot) { in ubifs_lpt_scan_nolock()
1937 err = ubifs_read_nnode(c, NULL, 0); in ubifs_lpt_scan_nolock()
1942 path = kmalloc(sizeof(struct lpt_scan_node) * (c->lpt_hght + 1), in ubifs_lpt_scan_nolock()
1947 path[0].ptr.nnode = c->nroot; in ubifs_lpt_scan_nolock()
1951 nnode = c->nroot; in ubifs_lpt_scan_nolock()
1952 i = start_lnum - c->main_first; in ubifs_lpt_scan_nolock()
1953 shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT; in ubifs_lpt_scan_nolock()
1954 for (h = 1; h < c->lpt_hght; h++) { in ubifs_lpt_scan_nolock()
1957 nnode = scan_get_nnode(c, path + h, nnode, iip); in ubifs_lpt_scan_nolock()
1964 pnode = scan_get_pnode(c, path + h, nnode, iip); in ubifs_lpt_scan_nolock()
1976 ret = scan_cb(c, lprops, path[h].in_tree, data); in ubifs_lpt_scan_nolock()
1983 for (h = 1; h < c->lpt_hght; h++) { in ubifs_lpt_scan_nolock()
2001 ubifs_ensure_cat(c, lprops); in ubifs_lpt_scan_nolock()
2015 update_cats(c, pnode); in ubifs_lpt_scan_nolock()
2016 c->pnodes_have += 1; in ubifs_lpt_scan_nolock()
2018 err = dbg_check_lpt_nodes(c, (struct ubifs_cnode *) in ubifs_lpt_scan_nolock()
2019 c->nroot, 0, 0); in ubifs_lpt_scan_nolock()
2022 err = dbg_check_cats(c); in ubifs_lpt_scan_nolock()
2039 if (lnum + 1 >= c->leb_cnt) { in ubifs_lpt_scan_nolock()
2041 start_lnum = c->main_first; in ubifs_lpt_scan_nolock()
2063 for (; h < c->lpt_hght; h++) { in ubifs_lpt_scan_nolock()
2064 nnode = scan_get_nnode(c, path + h, nnode, iip); in ubifs_lpt_scan_nolock()
2071 pnode = scan_get_pnode(c, path + h, nnode, iip); in ubifs_lpt_scan_nolock()
2091 static int dbg_chk_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, in dbg_chk_pnode() argument
2097 ubifs_err(c, "pnode num %d expected %d parent num %d iip %d", in dbg_chk_pnode()
2104 c->main_first; in dbg_chk_pnode()
2109 if (lnum >= c->leb_cnt) in dbg_chk_pnode()
2112 ubifs_err(c, "bad LEB number %d expected %d", in dbg_chk_pnode()
2118 ubifs_err(c, "LEB %d taken but not uncat %d", in dbg_chk_pnode()
2131 ubifs_err(c, "LEB %d index but cat %d", in dbg_chk_pnode()
2144 ubifs_err(c, "LEB %d not index but cat %d", in dbg_chk_pnode()
2151 list = &c->uncat_list; in dbg_chk_pnode()
2154 list = &c->empty_list; in dbg_chk_pnode()
2157 list = &c->freeable_list; in dbg_chk_pnode()
2160 list = &c->frdi_idx_list; in dbg_chk_pnode()
2168 heap = &c->lpt_heap[cat - 1]; in dbg_chk_pnode()
2185 ubifs_err(c, "LEB %d cat %d not found in cat heap/list", in dbg_chk_pnode()
2191 if (lprops->free != c->leb_size) { in dbg_chk_pnode()
2192 ubifs_err(c, "LEB %d cat %d free %d dirty %d", in dbg_chk_pnode()
2200 if (lprops->free + lprops->dirty != c->leb_size) { in dbg_chk_pnode()
2201 ubifs_err(c, "LEB %d cat %d free %d dirty %d", in dbg_chk_pnode()
2221 int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode, in dbg_check_lpt_nodes() argument
2228 if (!dbg_is_chk_lprops(c)) in dbg_check_lpt_nodes()
2238 ubifs_err(c, "nnode num %d expected %d parent num %d iip %d", in dbg_check_lpt_nodes()
2265 err = dbg_chk_pnode(c, pnode, col); in dbg_check_lpt_nodes()