303 lines
7.2 KiB
C
303 lines
7.2 KiB
C
/*
|
|
* Copyright (c) 1982, 1986, 1989 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)kern_kinfo.c 7.17 (Berkeley) 6/26/91
|
|
*/
|
|
|
|
#include "param.h"
|
|
#include "proc.h"
|
|
#include "kinfo.h"
|
|
#include "ioctl.h"
|
|
#include "tty.h"
|
|
#include "buf.h"
|
|
#include "file.h"
|
|
|
|
#include "vm/vm.h"
|
|
|
|
#include "kinfo_proc.h"
|
|
|
|
#define snderr(e) { error = (e); goto release;}
|
|
extern int kinfo_doproc(), kinfo_rtable(), kinfo_vnode(), kinfo_file();
|
|
struct kinfo_lock kinfo_lock;
|
|
|
|
/* ARGSUSED */
|
|
getkerninfo(p, uap, retval)
|
|
struct proc *p;
|
|
register struct args {
|
|
int op;
|
|
char *where;
|
|
int *size;
|
|
int arg;
|
|
} *uap;
|
|
int *retval;
|
|
{
|
|
|
|
int bufsize; /* max size of users buffer */
|
|
int needed, locked, (*server)(), error = 0;
|
|
|
|
switch (ki_type(uap->op)) {
|
|
|
|
case KINFO_PROC:
|
|
server = kinfo_doproc;
|
|
break;
|
|
|
|
case KINFO_RT:
|
|
server = kinfo_rtable;
|
|
break;
|
|
|
|
case KINFO_VNODE:
|
|
server = kinfo_vnode;
|
|
break;
|
|
|
|
case KINFO_FILE:
|
|
server = kinfo_file;
|
|
break;
|
|
|
|
default:
|
|
error = EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
if (uap->where == NULL || uap->size == NULL) {
|
|
error = (*server)(uap->op, NULL, NULL, uap->arg, &needed);
|
|
goto done;
|
|
}
|
|
|
|
if (error = copyin((caddr_t)uap->size, (caddr_t)&bufsize,
|
|
sizeof (bufsize)))
|
|
goto done;
|
|
|
|
while (kinfo_lock.kl_lock) {
|
|
kinfo_lock.kl_want++;
|
|
sleep(&kinfo_lock, PRIBIO+1);
|
|
kinfo_lock.kl_want--;
|
|
kinfo_lock.kl_locked++;
|
|
}
|
|
kinfo_lock.kl_lock++;
|
|
|
|
if (!useracc(uap->where, bufsize, B_WRITE))
|
|
snderr(EFAULT);
|
|
if (server != kinfo_vnode) /* XXX */
|
|
vslock(uap->where, bufsize);
|
|
locked = bufsize;
|
|
error = (*server)(uap->op, uap->where, &bufsize, uap->arg, &needed);
|
|
if (server != kinfo_vnode) /* XXX */
|
|
vsunlock(uap->where, locked, B_WRITE);
|
|
if (error == 0)
|
|
error = copyout((caddr_t)&bufsize,
|
|
(caddr_t)uap->size, sizeof (bufsize));
|
|
release:
|
|
kinfo_lock.kl_lock--;
|
|
if (kinfo_lock.kl_want)
|
|
wakeup(&kinfo_lock);
|
|
done:
|
|
if (!error)
|
|
*retval = needed;
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* try over estimating by 5 procs
|
|
*/
|
|
#define KINFO_PROCSLOP (5 * sizeof (struct kinfo_proc))
|
|
|
|
kinfo_doproc(op, where, acopysize, arg, aneeded)
|
|
char *where;
|
|
int *acopysize, *aneeded;
|
|
{
|
|
register struct proc *p;
|
|
register struct kinfo_proc *dp = (struct kinfo_proc *)where;
|
|
register needed = 0;
|
|
int buflen;
|
|
int doingzomb;
|
|
struct eproc eproc;
|
|
int error = 0;
|
|
|
|
if (where != NULL)
|
|
buflen = *acopysize;
|
|
|
|
p = allproc;
|
|
doingzomb = 0;
|
|
again:
|
|
for (; p != NULL; p = p->p_nxt) {
|
|
/*
|
|
* TODO - make more efficient (see notes below).
|
|
* do by session.
|
|
*/
|
|
switch (ki_op(op)) {
|
|
|
|
case KINFO_PROC_PID:
|
|
/* could do this with just a lookup */
|
|
if (p->p_pid != (pid_t)arg)
|
|
continue;
|
|
break;
|
|
|
|
case KINFO_PROC_PGRP:
|
|
/* could do this by traversing pgrp */
|
|
if (p->p_pgrp->pg_id != (pid_t)arg)
|
|
continue;
|
|
break;
|
|
|
|
case KINFO_PROC_TTY:
|
|
if ((p->p_flag&SCTTY) == 0 ||
|
|
p->p_session->s_ttyp == NULL ||
|
|
p->p_session->s_ttyp->t_dev != (dev_t)arg)
|
|
continue;
|
|
break;
|
|
|
|
case KINFO_PROC_UID:
|
|
if (p->p_ucred->cr_uid != (uid_t)arg)
|
|
continue;
|
|
break;
|
|
|
|
case KINFO_PROC_RUID:
|
|
if (p->p_cred->p_ruid != (uid_t)arg)
|
|
continue;
|
|
break;
|
|
}
|
|
if (where != NULL && buflen >= sizeof (struct kinfo_proc)) {
|
|
fill_eproc(p, &eproc);
|
|
if (error = copyout((caddr_t)p, &dp->kp_proc,
|
|
sizeof (struct proc)))
|
|
return (error);
|
|
if (error = copyout((caddr_t)&eproc, &dp->kp_eproc,
|
|
sizeof (eproc)))
|
|
return (error);
|
|
dp++;
|
|
buflen -= sizeof (struct kinfo_proc);
|
|
}
|
|
needed += sizeof (struct kinfo_proc);
|
|
}
|
|
if (doingzomb == 0) {
|
|
p = zombproc;
|
|
doingzomb++;
|
|
goto again;
|
|
}
|
|
if (where != NULL)
|
|
*acopysize = (caddr_t)dp - where;
|
|
else
|
|
needed += KINFO_PROCSLOP;
|
|
*aneeded = needed;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Fill in an eproc structure for the specified process.
|
|
*/
|
|
void
|
|
fill_eproc(p, ep)
|
|
register struct proc *p;
|
|
register struct eproc *ep;
|
|
{
|
|
register struct tty *tp;
|
|
|
|
ep->e_paddr = p;
|
|
ep->e_sess = p->p_pgrp->pg_session;
|
|
ep->e_pcred = *p->p_cred;
|
|
ep->e_ucred = *p->p_ucred;
|
|
ep->e_vm = *p->p_vmspace;
|
|
if (p->p_pptr)
|
|
ep->e_ppid = p->p_pptr->p_pid;
|
|
else
|
|
ep->e_ppid = 0;
|
|
ep->e_pgid = p->p_pgrp->pg_id;
|
|
ep->e_jobc = p->p_pgrp->pg_jobc;
|
|
if ((p->p_flag&SCTTY) &&
|
|
(tp = ep->e_sess->s_ttyp)) {
|
|
ep->e_tdev = tp->t_dev;
|
|
ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID;
|
|
ep->e_tsess = tp->t_session;
|
|
} else
|
|
ep->e_tdev = NODEV;
|
|
ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0;
|
|
if (SESS_LEADER(p))
|
|
ep->e_flag |= EPROC_SLEADER;
|
|
if (p->p_wmesg)
|
|
strncpy(ep->e_wmesg, p->p_wmesg, WMESGLEN);
|
|
ep->e_xsize = ep->e_xrssize = 0;
|
|
ep->e_xccount = ep->e_xswrss = 0;
|
|
}
|
|
|
|
/*
|
|
* Get file structures.
|
|
*/
|
|
kinfo_file(op, where, acopysize, arg, aneeded)
|
|
register char *where;
|
|
int *acopysize, *aneeded;
|
|
{
|
|
int buflen, needed, error;
|
|
struct file *fp;
|
|
char *start = where;
|
|
|
|
if (where == NULL) {
|
|
/*
|
|
* overestimate by 10 files
|
|
*/
|
|
*aneeded = sizeof (filehead) +
|
|
(nfiles + 10) * sizeof (struct file);
|
|
return (0);
|
|
}
|
|
buflen = *acopysize;
|
|
needed = 0;
|
|
|
|
/*
|
|
* first copyout filehead
|
|
*/
|
|
if (buflen > sizeof (filehead)) {
|
|
if (error = copyout((caddr_t)&filehead, where,
|
|
sizeof (filehead)))
|
|
return (error);
|
|
buflen -= sizeof (filehead);
|
|
where += sizeof (filehead);
|
|
}
|
|
needed += sizeof (filehead);
|
|
|
|
/*
|
|
* followed by an array of file structures
|
|
*/
|
|
for (fp = filehead; fp != NULL; fp = fp->f_filef) {
|
|
if (buflen > sizeof (struct file)) {
|
|
if (error = copyout((caddr_t)fp, where,
|
|
sizeof (struct file)))
|
|
return (error);
|
|
buflen -= sizeof (struct file);
|
|
where += sizeof (struct file);
|
|
}
|
|
needed += sizeof (struct file);
|
|
}
|
|
*acopysize = where - start;
|
|
*aneeded = needed;
|
|
|
|
return (0);
|
|
}
|