This will work if you're running as root:
1. Compile this code into a shared object using Sun Studio C compiler (cc
[-m64] -G plock. -o plock.so):
// source file: plock.c
#include "sys/lock.h"
#include "stdlib.h"
#pragma init( __init_plock )
void __init_plock( void )
{
// lock all process memory
plock( PROCLOCK );
// this putenv prevents the shared object from getting
// loaded by child processes
//
// use "LD_PRELOAD_64=" for a 64-bit shared object
putenv( "LD_PRELOAD_32=" );
}
2. Place the appropriate LD_PRELOAD_32 or LD_PRELOAD_64 environment variable
to load the shared object into memory. Make sure it's only set for the one
process:
LD_PRELOAD_32=/path/to/plock.so
export LD_PRELOAD_32
/start/your/locked/process/here
unset LD_PRELOAD_32
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