X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fudf%2Fpartition.c;h=aaab24c8c498d33ee3e9bb8774cf4fca47cee0bb;hb=be0f3131a9cc7239d438b5016643e3eb9c8d8c21;hp=dabf2b841db83c1ad00139e7c94054a858caa263;hpb=123656d4cc8c946f578ebd18c2050f5251720428;p=linux-2.6 diff --git a/fs/udf/partition.c b/fs/udf/partition.c index dabf2b841d..aaab24c8c4 100644 --- a/fs/udf/partition.c +++ b/fs/udf/partition.c @@ -14,7 +14,7 @@ * * HISTORY * - * 12/06/98 blf Created file. + * 12/06/98 blf Created file. * */ @@ -28,12 +28,12 @@ #include #include -inline uint32_t udf_get_pblock(struct super_block *sb, uint32_t block, uint16_t partition, uint32_t offset) +inline uint32_t udf_get_pblock(struct super_block *sb, uint32_t block, + uint16_t partition, uint32_t offset) { - if (partition >= UDF_SB_NUMPARTS(sb)) - { + if (partition >= UDF_SB_NUMPARTS(sb)) { udf_debug("block=%d, partition=%d, offset=%d: invalid partition\n", - block, partition, offset); + block, partition, offset); return 0xFFFFFFFF; } if (UDF_SB_PARTFUNC(sb, partition)) @@ -42,7 +42,8 @@ inline uint32_t udf_get_pblock(struct super_block *sb, uint32_t block, uint16_t return UDF_SB_PARTROOT(sb, partition) + block + offset; } -uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block, uint16_t partition, uint32_t offset) +uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block, + uint16_t partition, uint32_t offset) { struct buffer_head *bh = NULL; uint32_t newblock; @@ -51,82 +52,76 @@ uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block, uint16_t index = (sb->s_blocksize - UDF_SB_TYPEVIRT(sb,partition).s_start_offset) / sizeof(uint32_t); - if (block > UDF_SB_TYPEVIRT(sb,partition).s_num_entries) - { + if (block > UDF_SB_TYPEVIRT(sb,partition).s_num_entries) { udf_debug("Trying to access block beyond end of VAT (%d max %d)\n", - block, UDF_SB_TYPEVIRT(sb,partition).s_num_entries); + block, UDF_SB_TYPEVIRT(sb,partition).s_num_entries); return 0xFFFFFFFF; } - if (block >= index) - { + if (block >= index) { block -= index; newblock = 1 + (block / (sb->s_blocksize / sizeof(uint32_t))); index = block % (sb->s_blocksize / sizeof(uint32_t)); - } - else - { + } else { newblock = 0; index = UDF_SB_TYPEVIRT(sb,partition).s_start_offset / sizeof(uint32_t) + block; } loc = udf_block_map(UDF_SB_VAT(sb), newblock); - if (!(bh = sb_bread(sb, loc))) - { + if (!(bh = sb_bread(sb, loc))) { udf_debug("get_pblock(UDF_VIRTUAL_MAP:%p,%d,%d) VAT: %d[%d]\n", - sb, block, partition, loc, index); + sb, block, partition, loc, index); return 0xFFFFFFFF; } loc = le32_to_cpu(((__le32 *)bh->b_data)[index]); - udf_release_data(bh); + brelse(bh); - if (UDF_I_LOCATION(UDF_SB_VAT(sb)).partitionReferenceNum == partition) - { + if (UDF_I_LOCATION(UDF_SB_VAT(sb)).partitionReferenceNum == partition) { udf_debug("recursive call to udf_get_pblock!\n"); return 0xFFFFFFFF; } - return udf_get_pblock(sb, loc, UDF_I_LOCATION(UDF_SB_VAT(sb)).partitionReferenceNum, offset); + return udf_get_pblock(sb, loc, + UDF_I_LOCATION(UDF_SB_VAT(sb)).partitionReferenceNum, + offset); } -inline uint32_t udf_get_pblock_virt20(struct super_block *sb, uint32_t block, uint16_t partition, uint32_t offset) +inline uint32_t udf_get_pblock_virt20(struct super_block * sb, uint32_t block, + uint16_t partition, uint32_t offset) { return udf_get_pblock_virt15(sb, block, partition, offset); } -uint32_t udf_get_pblock_spar15(struct super_block *sb, uint32_t block, uint16_t partition, uint32_t offset) +uint32_t udf_get_pblock_spar15(struct super_block * sb, uint32_t block, + uint16_t partition, uint32_t offset) { int i; struct sparingTable *st = NULL; uint32_t packet = (block + offset) & ~(UDF_SB_TYPESPAR(sb,partition).s_packet_len - 1); - for (i=0; i<4; i++) - { - if (UDF_SB_TYPESPAR(sb,partition).s_spar_map[i] != NULL) - { + for (i = 0; i < 4; i++) { + if (UDF_SB_TYPESPAR(sb,partition).s_spar_map[i] != NULL) { st = (struct sparingTable *)UDF_SB_TYPESPAR(sb,partition).s_spar_map[i]->b_data; break; } } - if (st) - { - for (i=0; ireallocationTableLen); i++) - { - if (le32_to_cpu(st->mapEntry[i].origLocation) >= 0xFFFFFFF0) + if (st) { + for (i = 0; i < le16_to_cpu(st->reallocationTableLen); i++) { + if (le32_to_cpu(st->mapEntry[i].origLocation) >= 0xFFFFFFF0) { break; - else if (le32_to_cpu(st->mapEntry[i].origLocation) == packet) - { + } else if (le32_to_cpu(st->mapEntry[i].origLocation) == packet) { return le32_to_cpu(st->mapEntry[i].mappedLocation) + ((block + offset) & (UDF_SB_TYPESPAR(sb,partition).s_packet_len - 1)); - } - else if (le32_to_cpu(st->mapEntry[i].origLocation) > packet) + } else if (le32_to_cpu(st->mapEntry[i].origLocation) > packet) { break; + } } } + return UDF_SB_PARTROOT(sb,partition) + block + offset; } @@ -138,18 +133,14 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block) uint32_t packet; int i, j, k, l; - for (i=0; i UDF_SB_PARTROOT(sb,i) && - old_block < UDF_SB_PARTROOT(sb,i) + UDF_SB_PARTLEN(sb,i)) - { + old_block < UDF_SB_PARTROOT(sb,i) + UDF_SB_PARTLEN(sb,i)) { sdata = &UDF_SB_TYPESPAR(sb,i); packet = (old_block - UDF_SB_PARTROOT(sb,i)) & ~(sdata->s_packet_len - 1); - for (j=0; j<4; j++) - { - if (UDF_SB_TYPESPAR(sb,i).s_spar_map[j] != NULL) - { + for (j = 0; j < 4; j++) { + if (UDF_SB_TYPESPAR(sb,i).s_spar_map[j] != NULL) { st = (struct sparingTable *)sdata->s_spar_map[j]->b_data; break; } @@ -158,14 +149,10 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block) if (!st) return 1; - for (k=0; kreallocationTableLen); k++) - { - if (le32_to_cpu(st->mapEntry[k].origLocation) == 0xFFFFFFFF) - { - for (; j<4; j++) - { - if (sdata->s_spar_map[j]) - { + for (k = 0; k < le16_to_cpu(st->reallocationTableLen); k++) { + if (le32_to_cpu(st->mapEntry[k].origLocation) == 0xFFFFFFFF) { + for (; j < 4; j++) { + if (sdata->s_spar_map[j]) { st = (struct sparingTable *)sdata->s_spar_map[j]->b_data; st->mapEntry[k].origLocation = cpu_to_le32(packet); udf_update_tag((char *)st, sizeof(struct sparingTable) + le16_to_cpu(st->reallocationTableLen) * sizeof(struct sparingEntry)); @@ -175,28 +162,23 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block) *new_block = le32_to_cpu(st->mapEntry[k].mappedLocation) + ((old_block - UDF_SB_PARTROOT(sb,i)) & (sdata->s_packet_len - 1)); return 0; - } - else if (le32_to_cpu(st->mapEntry[k].origLocation) == packet) - { + } else if (le32_to_cpu(st->mapEntry[k].origLocation) == packet) { *new_block = le32_to_cpu(st->mapEntry[k].mappedLocation) + ((old_block - UDF_SB_PARTROOT(sb,i)) & (sdata->s_packet_len - 1)); return 0; - } - else if (le32_to_cpu(st->mapEntry[k].origLocation) > packet) + } else if (le32_to_cpu(st->mapEntry[k].origLocation) > packet) { break; + } } - for (l=k; lreallocationTableLen); l++) - { - if (le32_to_cpu(st->mapEntry[l].origLocation) == 0xFFFFFFFF) - { - for (; j<4; j++) - { - if (sdata->s_spar_map[j]) - { + + for (l = k; l < le16_to_cpu(st->reallocationTableLen); l++) { + if (le32_to_cpu(st->mapEntry[l].origLocation) == 0xFFFFFFFF) { + for (; j < 4; j++) { + if (sdata->s_spar_map[j]) { st = (struct sparingTable *)sdata->s_spar_map[j]->b_data; mapEntry = st->mapEntry[l]; mapEntry.origLocation = cpu_to_le32(packet); - memmove(&st->mapEntry[k+1], &st->mapEntry[k], (l-k)*sizeof(struct sparingEntry)); + memmove(&st->mapEntry[k + 1], &st->mapEntry[k], (l - k) * sizeof(struct sparingEntry)); st->mapEntry[k] = mapEntry; udf_update_tag((char *)st, sizeof(struct sparingTable) + le16_to_cpu(st->reallocationTableLen) * sizeof(struct sparingEntry)); mark_buffer_dirty(sdata->s_spar_map[j]); @@ -207,11 +189,12 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block) return 0; } } + return 1; - } + } /* if old_block */ } - if (i == UDF_SB_NUMPARTS(sb)) - { + + if (i == UDF_SB_NUMPARTS(sb)) { /* outside of partitions */ /* for now, fail =) */ return 1;