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Also pass fork1() a struct proc **, in case the caller wants a pointer

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to the newly created process.
This commit is contained in:
thorpej 1998-01-05 05:16:26 +00:00
parent c44d4effcd
commit ce340c6ca5
2 changed files with 14 additions and 7 deletions
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17
sys/kern/kern_fork.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_fork.c,v 1.34 1998/01/04 03:52:02 thorpej Exp $ */ /* $NetBSD: kern_fork.c,v 1.35 1998/01/05 05:16:28 thorpej Exp $ */
/* /*
* Copyright (c) 1982, 1986, 1989, 1991, 1993 * Copyright (c) 1982, 1986, 1989, 1991, 1993
@ -69,7 +69,7 @@ sys_fork(p, v, retval)
register_t *retval; register_t *retval;
{ {
return (fork1(p, 0, retval)); return (fork1(p, 0, retval, NULL));
} }
/* /*
@ -84,7 +84,7 @@ sys_vfork(p, v, retval)
register_t *retval; register_t *retval;
{ {
return (fork1(p, FORK_PPWAIT, retval)); return (fork1(p, FORK_PPWAIT, retval, NULL));
} }
/* /*
@ -99,14 +99,15 @@ sys___vfork14(p, v, retval)
register_t *retval; register_t *retval;
{ {
return (fork1(p, FORK_PPWAIT|FORK_SHAREVM, retval)); return (fork1(p, FORK_PPWAIT|FORK_SHAREVM, retval, NULL));
} }
int int
fork1(p1, flags, retval) fork1(p1, flags, retval, rnewprocp)
register struct proc *p1; register struct proc *p1;
int flags; int flags;
register_t *retval; register_t *retval;
struct proc **rnewprocp;
{ {
register struct proc *p2; register struct proc *p2;
register uid_t uid; register uid_t uid;
@ -295,6 +296,12 @@ again:
if (flags & FORK_SHAREVM) if (flags & FORK_SHAREVM)
cnt.v_forks_sharevm++; cnt.v_forks_sharevm++;
/*
* Pass a pointer to the new process to the caller.
*/
if (rnewprocp != NULL)
*rnewprocp = p2;
/* /*
* Preserve synchronization semantics of vfork. If waiting for * Preserve synchronization semantics of vfork. If waiting for
* child to exec or exit, set P_PPWAIT on child, and sleep on our * child to exec or exit, set P_PPWAIT on child, and sleep on our

4
sys/sys/proc.h
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@ -1,4 +1,4 @@
/* $NetBSD: proc.h,v 1.54 1998/01/04 03:53:04 thorpej Exp $ */ /* $NetBSD: proc.h,v 1.55 1998/01/05 05:16:26 thorpej Exp $ */
/*- /*-
* Copyright (c) 1986, 1989, 1991, 1993 * Copyright (c) 1986, 1989, 1991, 1993
@ -319,7 +319,7 @@ int tsleep __P((void *chan, int pri, const char *wmesg, int timo));
void unsleep __P((struct proc *)); void unsleep __P((struct proc *));
void wakeup __P((void *chan)); void wakeup __P((void *chan));
void exit1 __P((struct proc *, int)); void exit1 __P((struct proc *, int));
int fork1 __P((struct proc *, int, register_t *)); int fork1 __P((struct proc *, int, register_t *, struct proc **));
void kmeminit __P((void)); void kmeminit __P((void));
void rqinit __P((void)); void rqinit __P((void));
int groupmember __P((gid_t, struct ucred *)); int groupmember __P((gid_t, struct ucred *));