diff options
Diffstat (limited to 'src/kernel/basesegment.C')
-rw-r--r-- | src/kernel/basesegment.C | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/src/kernel/basesegment.C b/src/kernel/basesegment.C index eab00accc..8eb7e5484 100644 --- a/src/kernel/basesegment.C +++ b/src/kernel/basesegment.C @@ -142,11 +142,53 @@ void BaseSegment::updateRefCount( uint64_t i_vaddr, } /** + * STATIC * Sets the Page Permissions for a given page via virtual address */ -int BaseSegment::mmSetPermission(void* i_va, uint64_t i_size,PAGE_PERMISSIONS i_access_type) +int BaseSegment::mmSetPermission(void* i_va, uint64_t i_size, uint64_t i_access_type) { - return 0; + return Singleton<BaseSegment>::instance()._mmSetPermission(i_va,i_size,i_access_type); +} + + +/** + * Sets the Page Permissions for a given page via virtual address + */ +int BaseSegment::_mmSetPermission(void* i_va, uint64_t i_size, uint64_t i_access_type) +{ + int l_rc = 0; + Block *l_block = iv_block; + uint64_t l_va = reinterpret_cast<uint64_t>(i_va); + + + do + { + // If the va is not part of this block + if (!(l_block->isContained(l_va))) + { + // Check to see if there is a next block + if (l_block->iv_nextBlock) + { + // set local block to the next block + l_block = l_block->iv_nextBlock; + } + else + { + // address passed in does not fall into a block + return -EINVAL; + } + } + // The virtual address falls within this block + else + { + // Set the permission on the the current block. + return(l_block->mmSetPermission(l_va, i_size, i_access_type)); + + } + } while (l_block->iv_nextBlock); + + return l_rc; + } void BaseSegment::castOutPages(uint64_t i_type) |