INT 21 - Novell NetWare - SYNCHRONIZATION SERVICES - LOCK PHYSICAL RECORD SET
AH = C2h
AL = flags
bit 1: non-exclusive lock
BP = lock timeout in timer ticks (1/18 sec) 0000h = no wait
Return: AL = status
00h successful
FEh timed out
FFh failed
Desc:   attempt to lock all physical records listed in the log table
Notes:  this function is supported by NetWare 4.6+, Advanced NetWare 1.0+, and
Alloy NTNX
status FFh will be retuend if one or more physical records have been
exclusively locked by another process
SeeAlso: AH=C3h,AH=D1h

See also: 21BF

21C2 - Novell NetWare - SYNCHRONIZATION SERVICES - LOCK PHYSICAL RECORD SET