| 892 | } |
| 893 | |
| 894 | BOOLEAN |
| 895 | Ext2LookupMcbExtent ( |
| 896 | IN PEXT2_VCB Vcb, |
| 897 | IN PEXT2_MCB Mcb, |
| 898 | IN LONGLONG Vbn, |
| 899 | OUT PLONGLONG Lbn, |
| 900 | OUT PLONGLONG Length |
| 901 | ) |
| 902 | { |
| 903 | LONGLONG offset; |
| 904 | BOOLEAN rc; |
| 905 | |
| 906 | offset = Vbn & (~((LONGLONG)BLOCK_SIZE - 1)); |
| 907 | ASSERT ((offset & (BLOCK_SIZE - 1)) == 0); |
| 908 | offset = (offset >> BLOCK_BITS) + 1; |
| 909 | |
| 910 | rc = FsRtlLookupLargeMcbEntry( |
| 911 | &(Mcb->Extents), |
| 912 | offset, |
| 913 | Lbn, |
| 914 | Length, |
| 915 | NULL, |
| 916 | NULL, |
| 917 | NULL |
| 918 | ); |
| 919 | |
| 920 | if (rc) { |
| 921 | |
| 922 | if (Lbn && ((*Lbn) != -1)) { |
| 923 | ASSERT((*Lbn) > 0); |
| 924 | (*Lbn) = (((*Lbn) - 1) << BLOCK_BITS); |
| 925 | (*Lbn) += ((Vbn) & ((LONGLONG)BLOCK_SIZE - 1)); |
| 926 | } |
| 927 | |
| 928 | if (Length && *Length) { |
| 929 | (*Length) <<= BLOCK_BITS; |
| 930 | (*Length) -= ((Vbn) & ((LONGLONG)BLOCK_SIZE - 1)); |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | return rc; |
| 935 | } |
| 936 | |
| 937 | |
| 938 | BOOLEAN |
no outgoing calls
no test coverage detected