diff options
Diffstat (limited to 'sys/kern/subr_trap.c')
| -rw-r--r-- | sys/kern/subr_trap.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/sys/kern/subr_trap.c b/sys/kern/subr_trap.c index 5aff98f..2024c6b 100644 --- a/sys/kern/subr_trap.c +++ b/sys/kern/subr_trap.c @@ -35,7 +35,7 @@ * SUCH DAMAGE. * * from: @(#)trap.c 7.4 (Berkeley) 5/13/91 - * $Id: trap.c,v 1.89 1997/04/06 02:29:19 dyson Exp $ + * $Id: trap.c,v 1.90 1997/04/07 06:45:15 peter Exp $ */ /* @@ -938,3 +938,22 @@ bad: ktrsysret(p->p_tracep, code, error, rval[0]); #endif } + +/* + * Simplified back end of syscall(), used when returning from fork() + * directly into user mode. + */ +void +fork_return(p, frame) + struct proc *p; + struct trapframe frame; +{ + frame.tf_eax = 0; /* Child returns zero */ + frame.tf_eflags &= ~PSL_C; /* success */ + + userret(p, &frame, 0); +#ifdef KTRACE + if (KTRPOINT(p, KTR_SYSRET)) + ktrsysret(p->p_tracep, SYS_fork, 0, 0); +#endif +} |
