aboutsummaryrefslogtreecommitdiffstats
path: root/fs/udf
diff options
context:
space:
mode:
authorMarcin Slusarz <marcin.slusarz@gmail.com>2008-02-10 05:33:08 -0500
committerJan Kara <jack@suse.cz>2008-04-17 08:22:45 -0400
commit165923fa4590b0eb77bec31af383ea16b2d5868f (patch)
tree10b05d436c73e5392efc85eb918138d863ad3f28 /fs/udf
parentaf15a298a49c9b5844cdaf70e10eb808e54ead2c (diff)
udf: super.c reorganization
reorganize few code blocks in super.c which were needlessly indented (and hard to read): so change from: rettype fun() { init; if (sth) { long block of code; } } to: rettype fun() { init; if (!sth) return; long block of code; } or from: rettype fun2() { init; while (sth) { init2(); if (sth2) { long block of code; } } } to: rettype fun2() { init; while (sth) { init2(); if (!sth2) continue; long block of code; } } Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/udf')
-rw-r--r--fs/udf/super.c552
1 files changed, 270 insertions, 282 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 829ddfa5a148..17ba054faaa4 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -827,18 +827,18 @@ static void udf_find_anchor(struct super_block *sb)
827 } 827 }
828 828
829 for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) { 829 for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
830 if (sbi->s_anchor[i]) { 830 if (!sbi->s_anchor[i])
831 bh = udf_read_tagged(sb, sbi->s_anchor[i], 831 continue;
832 sbi->s_anchor[i], &ident); 832 bh = udf_read_tagged(sb, sbi->s_anchor[i],
833 if (!bh) 833 sbi->s_anchor[i], &ident);
834 if (!bh)
835 sbi->s_anchor[i] = 0;
836 else {
837 brelse(bh);
838 if ((ident != TAG_IDENT_AVDP) &&
839 (i || (ident != TAG_IDENT_FE &&
840 ident != TAG_IDENT_EFE)))
834 sbi->s_anchor[i] = 0; 841 sbi->s_anchor[i] = 0;
835 else {
836 brelse(bh);
837 if ((ident != TAG_IDENT_AVDP) &&
838 (i || (ident != TAG_IDENT_FE &&
839 ident != TAG_IDENT_EFE)))
840 sbi->s_anchor[i] = 0;
841 }
842 } 842 }
843 } 843 }
844 844
@@ -1020,128 +1020,118 @@ static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
1020 1020
1021static int udf_load_partdesc(struct super_block *sb, struct buffer_head *bh) 1021static int udf_load_partdesc(struct super_block *sb, struct buffer_head *bh)
1022{ 1022{
1023 struct partitionDesc *p; 1023 struct partitionHeaderDesc *phd;
1024 int i; 1024 struct partitionDesc *p = (struct partitionDesc *)bh->b_data;
1025 struct udf_part_map *map; 1025 struct udf_part_map *map;
1026 struct udf_sb_info *sbi; 1026 struct udf_sb_info *sbi = UDF_SB(sb);
1027 1027 bool found = false;
1028 p = (struct partitionDesc *)bh->b_data; 1028 int i;
1029 sbi = UDF_SB(sb); 1029 u16 partitionNumber = le16_to_cpu(p->partitionNumber);
1030 1030
1031 for (i = 0; i < sbi->s_partitions; i++) { 1031 for (i = 0; i < sbi->s_partitions; i++) {
1032 map = &sbi->s_partmaps[i]; 1032 map = &sbi->s_partmaps[i];
1033 udf_debug("Searching map: (%d == %d)\n", 1033 udf_debug("Searching map: (%d == %d)\n",
1034 map->s_partition_num, 1034 map->s_partition_num, partitionNumber);
1035 le16_to_cpu(p->partitionNumber)); 1035 found = map->s_partition_num == partitionNumber;
1036 if (map->s_partition_num == 1036 if (found)
1037 le16_to_cpu(p->partitionNumber)) {
1038 map->s_partition_len =
1039 le32_to_cpu(p->partitionLength); /* blocks */
1040 map->s_partition_root =
1041 le32_to_cpu(p->partitionStartingLocation);
1042 if (p->accessType ==
1043 cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
1044 map->s_partition_flags |=
1045 UDF_PART_FLAG_READ_ONLY;
1046 if (p->accessType ==
1047 cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
1048 map->s_partition_flags |=
1049 UDF_PART_FLAG_WRITE_ONCE;
1050 if (p->accessType ==
1051 cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
1052 map->s_partition_flags |=
1053 UDF_PART_FLAG_REWRITABLE;
1054 if (p->accessType ==
1055 cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
1056 map->s_partition_flags |=
1057 UDF_PART_FLAG_OVERWRITABLE;
1058
1059 if (!strcmp(p->partitionContents.ident,
1060 PD_PARTITION_CONTENTS_NSR02) ||
1061 !strcmp(p->partitionContents.ident,
1062 PD_PARTITION_CONTENTS_NSR03)) {
1063 struct partitionHeaderDesc *phd;
1064
1065 phd = (struct partitionHeaderDesc *)
1066 (p->partitionContentsUse);
1067 if (phd->unallocSpaceTable.extLength) {
1068 kernel_lb_addr loc = {
1069 .logicalBlockNum = le32_to_cpu(phd->unallocSpaceTable.extPosition),
1070 .partitionReferenceNum = i,
1071 };
1072
1073 map->s_uspace.s_table =
1074 udf_iget(sb, loc);
1075 if (!map->s_uspace.s_table) {
1076 udf_debug("cannot load unallocSpaceTable (part %d)\n", i);
1077 return 1;
1078 }
1079 map->s_partition_flags |=
1080 UDF_PART_FLAG_UNALLOC_TABLE;
1081 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1082 i, map->s_uspace.s_table->i_ino);
1083 }
1084 if (phd->unallocSpaceBitmap.extLength) {
1085 struct udf_bitmap *bitmap =
1086 udf_sb_alloc_bitmap(sb, i);
1087 map->s_uspace.s_bitmap = bitmap;
1088 if (bitmap != NULL) {
1089 bitmap->s_extLength =
1090 le32_to_cpu(phd->unallocSpaceBitmap.extLength);
1091 bitmap->s_extPosition =
1092 le32_to_cpu(phd->unallocSpaceBitmap.extPosition);
1093 map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
1094 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
1095 i, bitmap->s_extPosition);
1096 }
1097 }
1098 if (phd->partitionIntegrityTable.extLength)
1099 udf_debug("partitionIntegrityTable (part %d)\n", i);
1100 if (phd->freedSpaceTable.extLength) {
1101 kernel_lb_addr loc = {
1102 .logicalBlockNum = le32_to_cpu(phd->freedSpaceTable.extPosition),
1103 .partitionReferenceNum = i,
1104 };
1105
1106 map->s_fspace.s_table =
1107 udf_iget(sb, loc);
1108 if (!map->s_fspace.s_table) {
1109 udf_debug("cannot load freedSpaceTable (part %d)\n", i);
1110 return 1;
1111 }
1112 map->s_partition_flags |=
1113 UDF_PART_FLAG_FREED_TABLE;
1114 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1115 i, map->s_fspace.s_table->i_ino);
1116 }
1117 if (phd->freedSpaceBitmap.extLength) {
1118 struct udf_bitmap *bitmap =
1119 udf_sb_alloc_bitmap(sb, i);
1120 map->s_fspace.s_bitmap = bitmap;
1121 if (bitmap != NULL) {
1122 bitmap->s_extLength =
1123 le32_to_cpu(phd->freedSpaceBitmap.extLength);
1124 bitmap->s_extPosition =
1125 le32_to_cpu(phd->freedSpaceBitmap.extPosition);
1126 map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
1127 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1128 i, bitmap->s_extPosition);
1129 }
1130 }
1131 }
1132 break; 1037 break;
1133 }
1134 } 1038 }
1135 if (i == sbi->s_partitions) 1039
1040 if (!found) {
1136 udf_debug("Partition (%d) not found in partition map\n", 1041 udf_debug("Partition (%d) not found in partition map\n",
1137 le16_to_cpu(p->partitionNumber)); 1042 partitionNumber);
1138 else 1043 return 0;
1139 udf_debug("Partition (%d:%d type %x) starts at physical %d, " 1044 }
1140 "block length %d\n", 1045
1141 le16_to_cpu(p->partitionNumber), i, 1046 map->s_partition_len = le32_to_cpu(p->partitionLength); /* blocks */
1142 map->s_partition_type, 1047 map->s_partition_root = le32_to_cpu(p->partitionStartingLocation);
1143 map->s_partition_root, 1048
1144 map->s_partition_len); 1049 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
1050 map->s_partition_flags |= UDF_PART_FLAG_READ_ONLY;
1051 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
1052 map->s_partition_flags |= UDF_PART_FLAG_WRITE_ONCE;
1053 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
1054 map->s_partition_flags |= UDF_PART_FLAG_REWRITABLE;
1055 if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
1056 map->s_partition_flags |= UDF_PART_FLAG_OVERWRITABLE;
1057
1058 udf_debug("Partition (%d:%d type %x) starts at physical %d, "
1059 "block length %d\n", partitionNumber, i,
1060 map->s_partition_type, map->s_partition_root,
1061 map->s_partition_len);
1062
1063 if (strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR02) &&
1064 strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR03))
1065 return 0;
1066
1067 phd = (struct partitionHeaderDesc *)p->partitionContentsUse;
1068 if (phd->unallocSpaceTable.extLength) {
1069 kernel_lb_addr loc = {
1070 .logicalBlockNum = le32_to_cpu(
1071 phd->unallocSpaceTable.extPosition),
1072 .partitionReferenceNum = i,
1073 };
1074
1075 map->s_uspace.s_table = udf_iget(sb, loc);
1076 if (!map->s_uspace.s_table) {
1077 udf_debug("cannot load unallocSpaceTable (part %d)\n",
1078 i);
1079 return 1;
1080 }
1081 map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_TABLE;
1082 udf_debug("unallocSpaceTable (part %d) @ %ld\n",
1083 i, map->s_uspace.s_table->i_ino);
1084 }
1085
1086 if (phd->unallocSpaceBitmap.extLength) {
1087 struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, i);
1088 map->s_uspace.s_bitmap = bitmap;
1089 if (bitmap != NULL) {
1090 bitmap->s_extLength = le32_to_cpu(
1091 phd->unallocSpaceBitmap.extLength);
1092 bitmap->s_extPosition = le32_to_cpu(
1093 phd->unallocSpaceBitmap.extPosition);
1094 map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
1095 udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
1096 i, bitmap->s_extPosition);
1097 }
1098 }
1099
1100 if (phd->partitionIntegrityTable.extLength)
1101 udf_debug("partitionIntegrityTable (part %d)\n", i);
1102
1103 if (phd->freedSpaceTable.extLength) {
1104 kernel_lb_addr loc = {
1105 .logicalBlockNum = le32_to_cpu(
1106 phd->freedSpaceTable.extPosition),
1107 .partitionReferenceNum = i,
1108 };
1109
1110 map->s_fspace.s_table = udf_iget(sb, loc);
1111 if (!map->s_fspace.s_table) {
1112 udf_debug("cannot load freedSpaceTable (part %d)\n", i);
1113 return 1;
1114 }
1115
1116 map->s_partition_flags |= UDF_PART_FLAG_FREED_TABLE;
1117 udf_debug("freedSpaceTable (part %d) @ %ld\n",
1118 i, map->s_fspace.s_table->i_ino);
1119 }
1120
1121 if (phd->freedSpaceBitmap.extLength) {
1122 struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, i);
1123 map->s_fspace.s_bitmap = bitmap;
1124 if (bitmap != NULL) {
1125 bitmap->s_extLength = le32_to_cpu(
1126 phd->freedSpaceBitmap.extLength);
1127 bitmap->s_extPosition = le32_to_cpu(
1128 phd->freedSpaceBitmap.extPosition);
1129 map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
1130 udf_debug("freedSpaceBitmap (part %d) @ %d\n",
1131 i, bitmap->s_extPosition);
1132 }
1133 }
1134
1145 return 0; 1135 return 0;
1146} 1136}
1147 1137
@@ -1215,19 +1205,17 @@ static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
1215 map->s_type_specific.s_sparing. 1205 map->s_type_specific.s_sparing.
1216 s_spar_map[j] = bh2; 1206 s_spar_map[j] = bh2;
1217 1207
1218 if (bh2 != NULL) { 1208 if (bh2 == NULL)
1219 st = (struct sparingTable *) 1209 continue;
1220 bh2->b_data; 1210
1221 if (ident != 0 || strncmp( 1211 st = (struct sparingTable *)bh2->b_data;
1222 st->sparingIdent.ident, 1212 if (ident != 0 || strncmp(
1223 UDF_ID_SPARING, 1213 st->sparingIdent.ident,
1224 strlen(UDF_ID_SPARING))) { 1214 UDF_ID_SPARING,
1225 brelse(bh2); 1215 strlen(UDF_ID_SPARING))) {
1226 map->s_type_specific. 1216 brelse(bh2);
1227 s_sparing. 1217 map->s_type_specific.s_sparing.
1228 s_spar_map[j] = 1218 s_spar_map[j] = NULL;
1229 NULL;
1230 }
1231 } 1219 }
1232 } 1220 }
1233 map->s_partition_func = udf_get_pblock_spar15; 1221 map->s_partition_func = udf_get_pblock_spar15;
@@ -1392,40 +1380,40 @@ static int udf_process_sequence(struct super_block *sb, long block,
1392 brelse(bh); 1380 brelse(bh);
1393 } 1381 }
1394 for (i = 0; i < VDS_POS_LENGTH; i++) { 1382 for (i = 0; i < VDS_POS_LENGTH; i++) {
1395 if (vds[i].block) { 1383 if (!vds[i].block)
1396 bh = udf_read_tagged(sb, vds[i].block, vds[i].block, 1384 continue;
1397 &ident); 1385
1398 1386 bh = udf_read_tagged(sb, vds[i].block, vds[i].block,
1399 if (i == VDS_POS_PRIMARY_VOL_DESC) { 1387 &ident);
1400 udf_load_pvoldesc(sb, bh); 1388
1401 } else if (i == VDS_POS_LOGICAL_VOL_DESC) { 1389 if (i == VDS_POS_PRIMARY_VOL_DESC)
1402 if (udf_load_logicalvol(sb, bh, fileset)) { 1390 udf_load_pvoldesc(sb, bh);
1403 brelse(bh); 1391 else if (i == VDS_POS_LOGICAL_VOL_DESC) {
1404 return 1; 1392 if (udf_load_logicalvol(sb, bh, fileset)) {
1405 } 1393 brelse(bh);
1406 } else if (i == VDS_POS_PARTITION_DESC) { 1394 return 1;
1407 struct buffer_head *bh2 = NULL; 1395 }
1408 if (udf_load_partdesc(sb, bh)) { 1396 } else if (i == VDS_POS_PARTITION_DESC) {
1409 brelse(bh); 1397 struct buffer_head *bh2 = NULL;
1410 return 1; 1398 if (udf_load_partdesc(sb, bh)) {
1411 } 1399 brelse(bh);
1412 for (j = vds[i].block + 1; 1400 return 1;
1413 j < vds[VDS_POS_TERMINATING_DESC].block; 1401 }
1414 j++) { 1402 for (j = vds[i].block + 1;
1415 bh2 = udf_read_tagged(sb, j, j, &ident); 1403 j < vds[VDS_POS_TERMINATING_DESC].block;
1416 gd = (struct generic_desc *)bh2->b_data; 1404 j++) {
1417 if (ident == TAG_IDENT_PD) 1405 bh2 = udf_read_tagged(sb, j, j, &ident);
1418 if (udf_load_partdesc(sb, 1406 gd = (struct generic_desc *)bh2->b_data;
1419 bh2)) { 1407 if (ident == TAG_IDENT_PD)
1420 brelse(bh); 1408 if (udf_load_partdesc(sb, bh2)) {
1421 brelse(bh2); 1409 brelse(bh);
1422 return 1; 1410 brelse(bh2);
1423 } 1411 return 1;
1424 brelse(bh2); 1412 }
1425 } 1413 brelse(bh2);
1426 } 1414 }
1427 brelse(bh);
1428 } 1415 }
1416 brelse(bh);
1429 } 1417 }
1430 1418
1431 return 0; 1419 return 0;
@@ -1437,6 +1425,7 @@ static int udf_process_sequence(struct super_block *sb, long block,
1437static int udf_check_valid(struct super_block *sb, int novrs, int silent) 1425static int udf_check_valid(struct super_block *sb, int novrs, int silent)
1438{ 1426{
1439 long block; 1427 long block;
1428 struct udf_sb_info *sbi;
1440 1429
1441 if (novrs) { 1430 if (novrs) {
1442 udf_debug("Validity check skipped because of novrs option\n"); 1431 udf_debug("Validity check skipped because of novrs option\n");
@@ -1444,18 +1433,16 @@ static int udf_check_valid(struct super_block *sb, int novrs, int silent)
1444 } 1433 }
1445 /* Check that it is NSR02 compliant */ 1434 /* Check that it is NSR02 compliant */
1446 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */ 1435 /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
1447 else { 1436 block = udf_vrs(sb, silent);
1448 block = udf_vrs(sb, silent); 1437 if (block != -1)
1449 if (block == -1) { 1438 return !block;
1450 struct udf_sb_info *sbi = UDF_SB(sb); 1439
1451 udf_debug("Failed to read byte 32768. Assuming open " 1440 sbi = UDF_SB(sb);
1452 "disc. Skipping validity check\n"); 1441 udf_debug("Failed to read byte 32768. Assuming open "
1453 if (!sbi->s_last_block) 1442 "disc. Skipping validity check\n");
1454 sbi->s_last_block = udf_get_last_block(sb); 1443 if (!sbi->s_last_block)
1455 return 0; 1444 sbi->s_last_block = udf_get_last_block(sb);
1456 } else 1445 return 0;
1457 return !block;
1458 }
1459} 1446}
1460 1447
1461static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset) 1448static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
@@ -1474,6 +1461,7 @@ static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
1474 for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) { 1461 for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
1475 if (!sbi->s_anchor[i]) 1462 if (!sbi->s_anchor[i])
1476 continue; 1463 continue;
1464
1477 bh = udf_read_tagged(sb, sbi->s_anchor[i], sbi->s_anchor[i], 1465 bh = udf_read_tagged(sb, sbi->s_anchor[i], sbi->s_anchor[i],
1478 &ident); 1466 &ident);
1479 if (!bh) 1467 if (!bh)
@@ -1515,72 +1503,73 @@ static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
1515 for (i = 0; i < sbi->s_partitions; i++) { 1503 for (i = 0; i < sbi->s_partitions; i++) {
1516 kernel_lb_addr uninitialized_var(ino); 1504 kernel_lb_addr uninitialized_var(ino);
1517 struct udf_part_map *map = &sbi->s_partmaps[i]; 1505 struct udf_part_map *map = &sbi->s_partmaps[i];
1518 switch (map->s_partition_type) {
1519 case UDF_VIRTUAL_MAP15:
1520 case UDF_VIRTUAL_MAP20:
1521 if (!sbi->s_last_block) {
1522 sbi->s_last_block = udf_get_last_block(sb);
1523 udf_find_anchor(sb);
1524 }
1525 1506
1526 if (!sbi->s_last_block) { 1507 if (map->s_partition_type != UDF_VIRTUAL_MAP15 &&
1527 udf_debug("Unable to determine Lastblock (For " 1508 map->s_partition_type != UDF_VIRTUAL_MAP20)
1528 "Virtual Partition)\n"); 1509 continue;
1529 return 1;
1530 }
1531 1510
1532 for (j = 0; j < sbi->s_partitions; j++) { 1511 if (!sbi->s_last_block) {
1533 struct udf_part_map *map2 = &sbi->s_partmaps[j]; 1512 sbi->s_last_block = udf_get_last_block(sb);
1534 if (j != i && 1513 udf_find_anchor(sb);
1535 map->s_volumeseqnum == 1514 }
1536 map2->s_volumeseqnum && 1515
1537 map->s_partition_num == 1516 if (!sbi->s_last_block) {
1538 map2->s_partition_num) { 1517 udf_debug("Unable to determine Lastblock (For "
1539 ino.partitionReferenceNum = j; 1518 "Virtual Partition)\n");
1540 ino.logicalBlockNum = 1519 return 1;
1541 sbi->s_last_block - 1520 }
1542 map2->s_partition_root; 1521
1543 break; 1522 for (j = 0; j < sbi->s_partitions; j++) {
1544 } 1523 struct udf_part_map *map2 = &sbi->s_partmaps[j];
1524 if (j != i &&
1525 map->s_volumeseqnum ==
1526 map2->s_volumeseqnum &&
1527 map->s_partition_num ==
1528 map2->s_partition_num) {
1529 ino.partitionReferenceNum = j;
1530 ino.logicalBlockNum =
1531 sbi->s_last_block -
1532 map2->s_partition_root;
1533 break;
1545 } 1534 }
1535 }
1546 1536
1547 if (j == sbi->s_partitions) 1537 if (j == sbi->s_partitions)
1548 return 1; 1538 return 1;
1549 1539
1550 sbi->s_vat_inode = udf_iget(sb, ino); 1540 sbi->s_vat_inode = udf_iget(sb, ino);
1551 if (!sbi->s_vat_inode) 1541 if (!sbi->s_vat_inode)
1552 return 1; 1542 return 1;
1553 1543
1554 if (map->s_partition_type == UDF_VIRTUAL_MAP15) { 1544 if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
1555 map->s_type_specific.s_virtual.s_start_offset = 1545 map->s_type_specific.s_virtual.s_start_offset =
1556 udf_ext0_offset(sbi->s_vat_inode); 1546 udf_ext0_offset(sbi->s_vat_inode);
1557 map->s_type_specific.s_virtual.s_num_entries = 1547 map->s_type_specific.s_virtual.s_num_entries =
1558 (sbi->s_vat_inode->i_size - 36) >> 2; 1548 (sbi->s_vat_inode->i_size - 36) >> 2;
1559 } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) { 1549 } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
1560 uint32_t pos; 1550 uint32_t pos;
1561 struct virtualAllocationTable20 *vat20; 1551 struct virtualAllocationTable20 *vat20;
1562 1552
1563 pos = udf_block_map(sbi->s_vat_inode, 0); 1553 pos = udf_block_map(sbi->s_vat_inode, 0);
1564 bh = sb_bread(sb, pos); 1554 bh = sb_bread(sb, pos);
1565 if (!bh) 1555 if (!bh)
1566 return 1; 1556 return 1;
1567 vat20 = (struct virtualAllocationTable20 *) 1557 vat20 = (struct virtualAllocationTable20 *)
1568 bh->b_data + 1558 bh->b_data +
1569 udf_ext0_offset(sbi->s_vat_inode); 1559 udf_ext0_offset(sbi->s_vat_inode);
1570 map->s_type_specific.s_virtual.s_start_offset = 1560 map->s_type_specific.s_virtual.s_start_offset =
1571 le16_to_cpu(vat20->lengthHeader) + 1561 le16_to_cpu(vat20->lengthHeader) +
1572 udf_ext0_offset(sbi->s_vat_inode); 1562 udf_ext0_offset(sbi->s_vat_inode);
1573 map->s_type_specific.s_virtual.s_num_entries = 1563 map->s_type_specific.s_virtual.s_num_entries =
1574 (sbi->s_vat_inode->i_size - 1564 (sbi->s_vat_inode->i_size -
1575 map->s_type_specific.s_virtual. 1565 map->s_type_specific.s_virtual.
1576 s_start_offset) >> 2; 1566 s_start_offset) >> 2;
1577 brelse(bh); 1567 brelse(bh);
1578 }
1579 map->s_partition_root = udf_get_pblock(sb, 0, i, 0);
1580 map->s_partition_len =
1581 sbi->s_partmaps[ino.partitionReferenceNum].
1582 s_partition_len;
1583 } 1568 }
1569 map->s_partition_root = udf_get_pblock(sb, 0, i, 0);
1570 map->s_partition_len =
1571 sbi->s_partmaps[ino.partitionReferenceNum].
1572 s_partition_len;
1584 } 1573 }
1585 return 0; 1574 return 0;
1586} 1575}
@@ -1589,26 +1578,26 @@ static void udf_open_lvid(struct super_block *sb)
1589{ 1578{
1590 struct udf_sb_info *sbi = UDF_SB(sb); 1579 struct udf_sb_info *sbi = UDF_SB(sb);
1591 struct buffer_head *bh = sbi->s_lvid_bh; 1580 struct buffer_head *bh = sbi->s_lvid_bh;
1592 if (bh) { 1581 struct logicalVolIntegrityDesc *lvid;
1593 struct logicalVolIntegrityDesc *lvid = 1582 struct logicalVolIntegrityDescImpUse *lvidiu;
1594 (struct logicalVolIntegrityDesc *)bh->b_data; 1583 if (!bh)
1595 struct logicalVolIntegrityDescImpUse *lvidiu = 1584 return;
1596 udf_sb_lvidiu(sbi);
1597 1585
1598 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; 1586 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1599 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; 1587 lvidiu = udf_sb_lvidiu(sbi);
1600 udf_time_to_disk_stamp(&lvid->recordingDateAndTime,
1601 CURRENT_TIME);
1602 lvid->integrityType = LVID_INTEGRITY_TYPE_OPEN;
1603 1588
1604 lvid->descTag.descCRC = cpu_to_le16( 1589 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1605 udf_crc((char *)lvid + sizeof(tag), 1590 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1606 le16_to_cpu(lvid->descTag.descCRCLength), 1591 udf_time_to_disk_stamp(&lvid->recordingDateAndTime,
1607 0)); 1592 CURRENT_TIME);
1593 lvid->integrityType = LVID_INTEGRITY_TYPE_OPEN;
1608 1594
1609 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag); 1595 lvid->descTag.descCRC = cpu_to_le16(
1610 mark_buffer_dirty(bh); 1596 udf_crc((char *)lvid + sizeof(tag),
1611 } 1597 le16_to_cpu(lvid->descTag.descCRCLength), 0));
1598
1599 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
1600 mark_buffer_dirty(bh);
1612} 1601}
1613 1602
1614static void udf_close_lvid(struct super_block *sb) 1603static void udf_close_lvid(struct super_block *sb)
@@ -1616,36 +1605,35 @@ static void udf_close_lvid(struct super_block *sb)
1616 struct udf_sb_info *sbi = UDF_SB(sb); 1605 struct udf_sb_info *sbi = UDF_SB(sb);
1617 struct buffer_head *bh = sbi->s_lvid_bh; 1606 struct buffer_head *bh = sbi->s_lvid_bh;
1618 struct logicalVolIntegrityDesc *lvid; 1607 struct logicalVolIntegrityDesc *lvid;
1608 struct logicalVolIntegrityDescImpUse *lvidiu;
1619 1609
1620 if (!bh) 1610 if (!bh)
1621 return; 1611 return;
1622 1612
1623 lvid = (struct logicalVolIntegrityDesc *)bh->b_data; 1613 lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
1624 1614
1625 if (lvid->integrityType == LVID_INTEGRITY_TYPE_OPEN) { 1615 if (lvid->integrityType != LVID_INTEGRITY_TYPE_OPEN)
1626 struct logicalVolIntegrityDescImpUse *lvidiu = 1616 return;
1627 udf_sb_lvidiu(sbi); 1617
1628 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; 1618 lvidiu = udf_sb_lvidiu(sbi);
1629 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; 1619 lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
1630 udf_time_to_disk_stamp(&lvid->recordingDateAndTime, 1620 lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
1631 CURRENT_TIME); 1621 udf_time_to_disk_stamp(&lvid->recordingDateAndTime, CURRENT_TIME);
1632 if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev)) 1622 if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
1633 lvidiu->maxUDFWriteRev = 1623 lvidiu->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
1634 cpu_to_le16(UDF_MAX_WRITE_VERSION); 1624 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
1635 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev)) 1625 lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
1636 lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev); 1626 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
1637 if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev)) 1627 lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
1638 lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev); 1628 lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
1639 lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE); 1629
1640 1630 lvid->descTag.descCRC = cpu_to_le16(
1641 lvid->descTag.descCRC = cpu_to_le16( 1631 udf_crc((char *)lvid + sizeof(tag),
1642 udf_crc((char *)lvid + sizeof(tag), 1632 le16_to_cpu(lvid->descTag.descCRCLength),
1643 le16_to_cpu(lvid->descTag.descCRCLength), 1633 0));
1644 0)); 1634
1645 1635 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
1646 lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag); 1636 mark_buffer_dirty(bh);
1647 mark_buffer_dirty(bh);
1648 }
1649} 1637}
1650 1638
1651static void udf_sb_free_bitmap(struct udf_bitmap *bitmap) 1639static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 19:41:50 -0500