dtrace script to dump all file open calls for a specific process

fileopen.d

#!/usr/sbin/dtrace -s

/* dump all "open" syscalls */
/* $1 is the PID to observe */

syscall::open:entry
/pid == $1/
{
printf("'%s' (PID: %d): syscall:open %s", execname, pid, copyinstr(arg0));
}