ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ntdll: Avoid accessing builtin views outside of the critical section. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2017-09-11 19:50:30 +02:00
parent a901fa9dc3
commit 8dc8b3e9c0
1 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
dlls/ntdll/virtual.c
View File

@ -1634,25 +1634,25 @@ NTSTATUS virtual_create_builtin_view( void *module )
server_enter_uninterrupted_section( &csVirtual, &sigset );
status = create_view( &view, base, size, SEC_IMAGE | SEC_FILE | VPROT_SYSTEM |
VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
server_leave_uninterrupted_section( &csVirtual, &sigset );
if (status) return status;
/* The PE header is always read-only, no write, no execute. */
set_page_vprot( view->base, page_size, VPROT_COMMITTED | VPROT_READ );
sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
if (!status)
{
BYTE flags = VPROT_COMMITTED;
TRACE( "created %p-%p\n", base, (char *)base + size );
if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
set_page_vprot( (char *)view->base + sec[i].VirtualAddress, sec[i].Misc.VirtualSize, flags );
/* The PE header is always read-only, no write, no execute. */
set_page_vprot( base, page_size, VPROT_COMMITTED | VPROT_READ );
sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
{
BYTE flags = VPROT_COMMITTED;
if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
set_page_vprot( (char *)base + sec[i].VirtualAddress, sec[i].Misc.VirtualSize, flags );
}
}
server_leave_uninterrupted_section( &csVirtual, &sigset );
return status;
}