Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-02-22 08:25:03 +00:00
Code Issues Projects Releases Packages Wiki Activity

[NTVDM]

Browse source 
Implement INT 21h, AH=5Ch "Lock/Unlock Region of File".

svn path=/trunk/; revision=63311
This commit is contained in:
Hermès Bélusca-Maïto 2014-05-16 00:56:46 +00:00
parent a242a67b73
commit 2d601a6dfc
1 changed files with 53 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

53
reactos/subsystems/ntvdm/dos/dos32krnl/dos.c
View file

@ -2622,6 +2622,59 @@ VOID WINAPI DosInt21h(LPWORD Stack)
break;
}
/* Lock/Unlock Region of File */
case 0x5C:
{
HANDLE Handle = DosGetRealHandle(getBX());
if (Handle == INVALID_HANDLE_VALUE)
{
/* The handle is invalid */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
setAX(ERROR_INVALID_HANDLE);
break;
}
if (getAL() == 0x00)
{
/* Lock region of file */
if (LockFile(Handle,
MAKELONG(getCX(), getDX()), 0,
MAKELONG(getSI(), getDI()), 0))
{
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
setAX(GetLastError());
}
}
else if (getAL() == 0x01)
{
/* Unlock region of file */
if (UnlockFile(Handle,
MAKELONG(getCX(), getDX()), 0,
MAKELONG(getSI(), getDI()), 0))
{
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
}
else
{
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
setAX(GetLastError());
}
}
else
{
/* Invalid subfunction */
Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
setAX(ERROR_INVALID_FUNCTION);
}
break;
}
/* Canonicalize File Name or Path */
case 0x60:
{