9be8ac5294
lookup and allocation, and any dependency on NPROC or MAXUSERS. NO_PID changed to -1 (and renamed NO_PGID) to remove artificial limit on PID_MAX. As discussed on tech-kern.
735 lines
18 KiB
C
735 lines
18 KiB
C
/* $NetBSD: kern_prot.c,v 1.77 2003/03/19 11:36:34 dsl Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1989, 1990, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)kern_prot.c 8.9 (Berkeley) 2/14/95
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*/
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/*
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* System calls related to processes and protection
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: kern_prot.c,v 1.77 2003/03/19 11:36:34 dsl Exp $");
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#include "opt_compat_43.h"
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#include <sys/param.h>
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#include <sys/acct.h>
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#include <sys/systm.h>
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#include <sys/ucred.h>
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#include <sys/proc.h>
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#include <sys/timeb.h>
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#include <sys/times.h>
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#include <sys/malloc.h>
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#include <sys/syslog.h>
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#include <sys/mount.h>
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#include <sys/sa.h>
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#include <sys/syscallargs.h>
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MALLOC_DEFINE(M_CRED, "cred", "credentials");
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int sys_getpid(struct lwp *, void *, register_t *);
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int sys_getpid_with_ppid(struct lwp *, void *, register_t *);
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int sys_getuid(struct lwp *, void *, register_t *);
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int sys_getuid_with_euid(struct lwp *, void *, register_t *);
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int sys_getgid(struct lwp *, void *, register_t *);
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int sys_getgid_with_egid(struct lwp *, void *, register_t *);
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/* ARGSUSED */
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int
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sys_getpid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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*retval = p->p_pid;
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return (0);
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}
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/* ARGSUSED */
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int
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sys_getpid_with_ppid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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retval[0] = p->p_pid;
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retval[1] = p->p_pptr->p_pid;
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return (0);
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}
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/* ARGSUSED */
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int
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sys_getppid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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*retval = p->p_pptr->p_pid;
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return (0);
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}
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/* Get process group ID; note that POSIX getpgrp takes no parameter */
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int
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sys_getpgrp(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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*retval = p->p_pgrp->pg_id;
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return (0);
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}
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/*
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* Return the process group ID of the session leader (session ID)
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* for the specified process.
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*/
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int
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sys_getsid(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_getsid_args /* {
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syscalldarg(pid_t) pid;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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if (SCARG(uap, pid) == 0)
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goto found;
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if ((p = pfind(SCARG(uap, pid))) == 0)
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return (ESRCH);
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found:
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*retval = p->p_session->s_sid;
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return (0);
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}
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int
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sys_getpgid(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_getpgid_args /* {
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syscallarg(pid_t) pid;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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if (SCARG(uap, pid) == 0)
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goto found;
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if ((p = pfind(SCARG(uap, pid))) == 0)
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return (ESRCH);
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found:
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*retval = p->p_pgid;
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return (0);
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}
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/* ARGSUSED */
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int
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sys_getuid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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*retval = p->p_cred->p_ruid;
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return (0);
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}
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/* ARGSUSED */
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int
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sys_getuid_with_euid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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retval[0] = p->p_cred->p_ruid;
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retval[1] = p->p_ucred->cr_uid;
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return (0);
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}
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/* ARGSUSED */
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int
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sys_geteuid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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*retval = p->p_ucred->cr_uid;
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return (0);
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}
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/* ARGSUSED */
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int
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sys_getgid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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*retval = p->p_cred->p_rgid;
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return (0);
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}
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/* ARGSUSED */
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int
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sys_getgid_with_egid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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retval[0] = p->p_cred->p_rgid;
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retval[1] = p->p_ucred->cr_gid;
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return (0);
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}
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/*
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* Get effective group ID. The "egid" is groups[0], and could be obtained
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* via getgroups. This syscall exists because it is somewhat painful to do
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* correctly in a library function.
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*/
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/* ARGSUSED */
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int
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sys_getegid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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*retval = p->p_ucred->cr_gid;
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return (0);
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}
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int
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sys_getgroups(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_getgroups_args /* {
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syscallarg(int) gidsetsize;
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syscallarg(gid_t *) gidset;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct pcred *pc = p->p_cred;
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u_int ngrp;
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int error;
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if (SCARG(uap, gidsetsize) == 0) {
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*retval = pc->pc_ucred->cr_ngroups;
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return (0);
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} else if (SCARG(uap, gidsetsize) < 0)
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return (EINVAL);
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ngrp = SCARG(uap, gidsetsize);
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if (ngrp < pc->pc_ucred->cr_ngroups)
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return (EINVAL);
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ngrp = pc->pc_ucred->cr_ngroups;
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error = copyout((caddr_t)pc->pc_ucred->cr_groups,
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(caddr_t)SCARG(uap, gidset), ngrp * sizeof(gid_t));
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if (error)
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return (error);
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*retval = ngrp;
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return (0);
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}
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/* ARGSUSED */
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int
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sys_setsid(struct lwp *l, void *v, register_t *retval)
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{
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struct proc *p = l->l_proc;
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if (p->p_pgid == p->p_pid || pgfind(p->p_pid)) {
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return (EPERM);
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} else {
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(void)enterpgrp(p, p->p_pid, 1);
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*retval = p->p_pid;
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return (0);
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}
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}
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/*
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* set process group (setpgid/old setpgrp)
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*
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* caller does setpgid(targpid, targpgid)
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*
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* pgid must be in valid range (EINVAL)
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* pid must be caller or child of caller (ESRCH)
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* if a child
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* pid must be in same session (EPERM)
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* pid can't have done an exec (EACCES)
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* if pgid != pid
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* there must exist some pid in same session having pgid (EPERM)
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* pid must not be session leader (EPERM)
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*
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* Permission checks now in enterpgrp()
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*/
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/* ARGSUSED */
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int
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sys_setpgid(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_setpgid_args /* {
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syscallarg(int) pid;
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syscallarg(int) pgid;
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} */ *uap = v;
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struct proc *curp = l->l_proc;
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struct proc *targp; /* target process */
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if (SCARG(uap, pgid) < 0)
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return EINVAL;
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/* XXX MP - there is a horrid race here with targp exiting! */
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if (SCARG(uap, pid) != 0 && SCARG(uap, pid) != curp->p_pid) {
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targp = pfind(SCARG(uap, pid));
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if (targp == NULL)
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return ESRCH;
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} else
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targp = curp;
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if (SCARG(uap, pgid) == 0)
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SCARG(uap, pgid) = targp->p_pid;
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return enterpgrp(targp, SCARG(uap, pgid), 0);
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}
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/*
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* Set real, effective and saved uids to the requested values.
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* non-root callers can only ever change uids to values that match
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* one of the processes current uid values.
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* This is further restricted by the flags argument.
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*/
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int
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do_setresuid(struct lwp *l, uid_t r, uid_t e, uid_t sv, u_int flags)
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{
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int error;
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struct proc *p = l->l_proc;
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struct pcred *pcred = p->p_cred;
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struct ucred *cred = pcred->pc_ucred;
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/* Superuser can do anything it wants to.... */
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error = suser(cred, &p->p_acflag);
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if (error) {
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/* Otherwise check new value is one of the allowed
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existing values. */
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if (r != -1 && !((flags & ID_R_EQ_R) && r == pcred->p_ruid)
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&& !((flags & ID_R_EQ_E) && r == cred->cr_uid)
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&& !((flags & ID_R_EQ_S) && r == pcred->p_svuid))
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return error;
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if (e != -1 && !((flags & ID_E_EQ_R) && e == pcred->p_ruid)
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&& !((flags & ID_E_EQ_E) && e == cred->cr_uid)
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&& !((flags & ID_E_EQ_S) && e == pcred->p_svuid))
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return error;
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if (sv != -1 && !((flags & ID_S_EQ_R) && sv == pcred->p_ruid)
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&& !((flags & ID_S_EQ_E) && sv == cred->cr_uid)
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&& !((flags & ID_S_EQ_S) && sv == pcred->p_svuid))
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return error;
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}
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/* If nothing has changed, short circuit the request */
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if ((r == -1 || r == pcred->p_ruid)
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&& (e == -1 || e == cred->cr_uid)
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&& (sv == -1 || sv == pcred->p_svuid))
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/* nothing to do */
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return 0;
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/* The pcred structure is not actually shared... */
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if (r != -1 && r != pcred->p_ruid) {
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/* Update count of processes for this user */
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(void)chgproccnt(pcred->p_ruid, -1);
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(void)chgproccnt(r, 1);
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pcred->p_ruid = r;
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}
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if (sv != -1)
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pcred->p_svuid = sv;
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if (e != -1 && e != cred->cr_uid) {
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/* Update a clone of the current credentials */
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pcred->pc_ucred = cred = crcopy(cred);
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cred->cr_uid = e;
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}
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/* Mark process as having changed credentials, stops tracing etc */
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p_sugid(p);
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return 0;
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}
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/*
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* Set real, effective and saved gids to the requested values.
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* non-root callers can only ever change gids to values that match
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* one of the processes current gid values.
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* This is further restricted by the flags argument.
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*/
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int
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do_setresgid(struct lwp *l, gid_t r, gid_t e, gid_t sv, u_int flags)
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{
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int error;
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struct proc *p = l->l_proc;
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struct pcred *pcred = p->p_cred;
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struct ucred *cred = pcred->pc_ucred;
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/* Superuser can do anything it wants to.... */
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error = suser(cred, &p->p_acflag);
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if (error) {
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/* Otherwise check new value is one of the allowed
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existing values. */
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if (r != -1 && !((flags & ID_R_EQ_R) && r == pcred->p_rgid)
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&& !((flags & ID_R_EQ_E) && r == cred->cr_gid)
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&& !((flags & ID_R_EQ_S) && r == pcred->p_svgid))
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return error;
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if (e != -1 && !((flags & ID_E_EQ_R) && e == pcred->p_rgid)
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&& !((flags & ID_E_EQ_E) && e == cred->cr_gid)
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&& !((flags & ID_E_EQ_S) && e == pcred->p_svgid))
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return error;
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if (sv != -1 && !((flags & ID_S_EQ_R) && sv == pcred->p_rgid)
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&& !((flags & ID_S_EQ_E) && sv == cred->cr_gid)
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&& !((flags & ID_S_EQ_S) && sv == pcred->p_svgid))
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return error;
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}
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/* If nothing has changed, short circuit the request */
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if ((r == -1 || r == pcred->p_rgid)
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&& (e == -1 || e == cred->cr_gid)
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&& (sv == -1 || sv == pcred->p_svgid))
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/* nothing to do */
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return 0;
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/* The pcred structure is not actually shared... */
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if (r != -1)
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pcred->p_rgid = r;
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if (sv != -1)
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pcred->p_svgid = sv;
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if (e != -1 && e != cred->cr_gid) {
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/* Update a clone of the current credentials */
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pcred->pc_ucred = cred = crcopy(cred);
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cred->cr_gid = e;
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}
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/* Mark process as having changed credentials, stops tracing etc */
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p_sugid(p);
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return 0;
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}
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/* ARGSUSED */
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int
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sys_setuid(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_setuid_args /* {
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syscallarg(uid_t) uid;
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} */ *uap = v;
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uid_t uid = SCARG(uap, uid);
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return do_setresuid(l, uid, uid, uid,
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ID_R_EQ_R | ID_E_EQ_R | ID_S_EQ_R);
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}
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/* ARGSUSED */
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int
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sys_seteuid(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_seteuid_args /* {
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syscallarg(uid_t) euid;
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} */ *uap = v;
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return do_setresuid(l, -1, SCARG(uap, euid), -1, ID_E_EQ_R | ID_E_EQ_S);
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}
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int
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sys_setreuid(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_setreuid_args /* {
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syscallarg(uid_t) ruid;
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syscallarg(uid_t) euid;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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uid_t ruid, euid, svuid;
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ruid = SCARG(uap, ruid);
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euid = SCARG(uap, euid);
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if (ruid == -1)
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ruid = p->p_cred->p_ruid;
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if (euid == -1)
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euid = p->p_ucred->cr_uid;
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/* Saved uid is set to the new euid if the ruid changed */
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svuid = ruid == p->p_cred->p_ruid ? -1 : euid;
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return do_setresuid(l, ruid, euid, svuid,
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ID_R_EQ_R | ID_R_EQ_E |
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ID_E_EQ_R | ID_E_EQ_E | ID_E_EQ_S |
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ID_S_EQ_R | ID_S_EQ_E | ID_S_EQ_S);
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}
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/* ARGSUSED */
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int
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sys_setgid(struct lwp *l, void *v, register_t *retval)
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{
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struct sys_setgid_args /* {
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syscallarg(gid_t) gid;
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} */ *uap = v;
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gid_t gid = SCARG(uap, gid);
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return do_setresgid(l, gid, gid, gid,
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ID_R_EQ_R | ID_E_EQ_R | ID_S_EQ_R);
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|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
sys_setegid(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_setegid_args /* {
|
|
syscallarg(gid_t) egid;
|
|
} */ *uap = v;
|
|
|
|
return do_setresgid(l, -1, SCARG(uap, egid), -1, ID_E_EQ_R | ID_E_EQ_S);
|
|
}
|
|
|
|
int
|
|
sys_setregid(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_setregid_args /* {
|
|
syscallarg(gid_t) rgid;
|
|
syscallarg(gid_t) egid;
|
|
} */ *uap = v;
|
|
struct proc *p = l->l_proc;
|
|
gid_t rgid, egid, svgid;
|
|
|
|
rgid = SCARG(uap, rgid);
|
|
egid = SCARG(uap, egid);
|
|
if (rgid == -1)
|
|
rgid = p->p_cred->p_rgid;
|
|
if (egid == -1)
|
|
egid = p->p_ucred->cr_gid;
|
|
/* Saved gid is set to the new egid if the rgid changed */
|
|
svgid = rgid == p->p_cred->p_rgid ? -1 : egid;
|
|
|
|
return do_setresgid(l, rgid, egid, svgid,
|
|
ID_R_EQ_R | ID_R_EQ_E |
|
|
ID_E_EQ_R | ID_E_EQ_E | ID_E_EQ_S |
|
|
ID_S_EQ_R | ID_S_EQ_E | ID_S_EQ_S);
|
|
}
|
|
|
|
int
|
|
sys_issetugid(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct proc *p = l->l_proc;
|
|
|
|
/*
|
|
* Note: OpenBSD sets a P_SUGIDEXEC flag set at execve() time,
|
|
* we use P_SUGID because we consider changing the owners as
|
|
* "tainting" as well.
|
|
* This is significant for procs that start as root and "become"
|
|
* a user without an exec - programs cannot know *everything*
|
|
* that libc *might* have put in their data segment.
|
|
*/
|
|
*retval = (p->p_flag & P_SUGID) != 0;
|
|
return (0);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
sys_setgroups(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys_setgroups_args /* {
|
|
syscallarg(int) gidsetsize;
|
|
syscallarg(const gid_t *) gidset;
|
|
} */ *uap = v;
|
|
struct proc *p = l->l_proc;
|
|
struct pcred *pc = p->p_cred;
|
|
int ngrp;
|
|
int error;
|
|
gid_t grp[NGROUPS];
|
|
size_t grsize;
|
|
|
|
if ((error = suser(pc->pc_ucred, &p->p_acflag)) != 0)
|
|
return (error);
|
|
|
|
ngrp = SCARG(uap, gidsetsize);
|
|
if ((u_int)ngrp > NGROUPS)
|
|
return (EINVAL);
|
|
|
|
grsize = ngrp * sizeof(gid_t);
|
|
error = copyin(SCARG(uap, gidset), grp, grsize);
|
|
if (error)
|
|
return (error);
|
|
/*
|
|
* Check if this is a no-op.
|
|
*/
|
|
if (pc->pc_ucred->cr_ngroups == (u_int) ngrp &&
|
|
memcmp(grp, pc->pc_ucred->cr_groups, grsize) == 0)
|
|
return (0);
|
|
|
|
pc->pc_ucred = crcopy(pc->pc_ucred);
|
|
(void)memcpy(pc->pc_ucred->cr_groups, grp, grsize);
|
|
pc->pc_ucred->cr_ngroups = ngrp;
|
|
p_sugid(p);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check if gid is a member of the group set.
|
|
*/
|
|
int
|
|
groupmember(gid_t gid, const struct ucred *cred)
|
|
{
|
|
const gid_t *gp;
|
|
const gid_t *egp;
|
|
|
|
egp = &(cred->cr_groups[cred->cr_ngroups]);
|
|
for (gp = cred->cr_groups; gp < egp; gp++)
|
|
if (*gp == gid)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Test whether the specified credentials imply "super-user"
|
|
* privilege; if so, and we have accounting info, set the flag
|
|
* indicating use of super-powers.
|
|
* Returns 0 or error.
|
|
*/
|
|
int
|
|
suser(const struct ucred *cred, u_short *acflag)
|
|
{
|
|
|
|
if (cred->cr_uid == 0) {
|
|
if (acflag)
|
|
*acflag |= ASU;
|
|
return (0);
|
|
}
|
|
return (EPERM);
|
|
}
|
|
|
|
/*
|
|
* Allocate a zeroed cred structure.
|
|
*/
|
|
struct ucred *
|
|
crget(void)
|
|
{
|
|
struct ucred *cr;
|
|
|
|
MALLOC(cr, struct ucred *, sizeof(*cr), M_CRED, M_WAITOK);
|
|
memset((caddr_t)cr, 0, sizeof(*cr));
|
|
cr->cr_ref = 1;
|
|
return (cr);
|
|
}
|
|
|
|
/*
|
|
* Free a cred structure.
|
|
* Throws away space when ref count gets to 0.
|
|
*/
|
|
void
|
|
crfree(struct ucred *cr)
|
|
{
|
|
|
|
if (--cr->cr_ref == 0)
|
|
FREE((caddr_t)cr, M_CRED);
|
|
}
|
|
|
|
/*
|
|
* Copy cred structure to a new one and free the old one.
|
|
*/
|
|
struct ucred *
|
|
crcopy(struct ucred *cr)
|
|
{
|
|
struct ucred *newcr;
|
|
|
|
if (cr->cr_ref == 1)
|
|
return (cr);
|
|
newcr = crget();
|
|
*newcr = *cr;
|
|
crfree(cr);
|
|
newcr->cr_ref = 1;
|
|
return (newcr);
|
|
}
|
|
|
|
/*
|
|
* Dup cred struct to a new held one.
|
|
*/
|
|
struct ucred *
|
|
crdup(const struct ucred *cr)
|
|
{
|
|
struct ucred *newcr;
|
|
|
|
newcr = crget();
|
|
*newcr = *cr;
|
|
newcr->cr_ref = 1;
|
|
return (newcr);
|
|
}
|
|
|
|
/*
|
|
* convert from userland credentials to kernel one
|
|
*/
|
|
void
|
|
crcvt(struct ucred *uc, const struct uucred *uuc)
|
|
{
|
|
|
|
uc->cr_ref = 0;
|
|
uc->cr_uid = uuc->cr_uid;
|
|
uc->cr_gid = uuc->cr_gid;
|
|
uc->cr_ngroups = uuc->cr_ngroups;
|
|
(void)memcpy(uc->cr_groups, uuc->cr_groups, sizeof(uuc->cr_groups));
|
|
}
|
|
|
|
/*
|
|
* Get login name, if available.
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
sys___getlogin(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys___getlogin_args /* {
|
|
syscallarg(char *) namebuf;
|
|
syscallarg(size_t) namelen;
|
|
} */ *uap = v;
|
|
struct proc *p = l->l_proc;
|
|
|
|
if (SCARG(uap, namelen) > sizeof(p->p_pgrp->pg_session->s_login))
|
|
SCARG(uap, namelen) = sizeof(p->p_pgrp->pg_session->s_login);
|
|
return (copyout((caddr_t) p->p_pgrp->pg_session->s_login,
|
|
(caddr_t) SCARG(uap, namebuf), SCARG(uap, namelen)));
|
|
}
|
|
|
|
/*
|
|
* Set login name.
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
sys___setlogin(struct lwp *l, void *v, register_t *retval)
|
|
{
|
|
struct sys___setlogin_args /* {
|
|
syscallarg(const char *) namebuf;
|
|
} */ *uap = v;
|
|
struct proc *p = l->l_proc;
|
|
struct session *s = p->p_pgrp->pg_session;
|
|
char newname[sizeof s->s_login + 1];
|
|
int error;
|
|
|
|
if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
|
|
return (error);
|
|
error = copyinstr(SCARG(uap, namebuf), &newname, sizeof newname, NULL);
|
|
if (error != 0)
|
|
return (error == ENAMETOOLONG ? EINVAL : error);
|
|
|
|
if (s->s_flags & S_LOGIN_SET && p->p_pid != s->s_sid &&
|
|
strncmp(newname, s->s_login, sizeof s->s_login) != 0)
|
|
log(LOG_WARNING, "%s (pid %d) changing logname from "
|
|
"%.*s to %s\n", p->p_comm, p->p_pid,
|
|
(int)sizeof s->s_login, s->s_login, newname);
|
|
s->s_flags |= S_LOGIN_SET;
|
|
strncpy(s->s_login, newname, sizeof s->s_login);
|
|
return (0);
|
|
}
|