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NetBSD/sys/compat/darwin/darwin_sysctl.c

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/* $NetBSD: darwin_sysctl.c,v 1.53 2007/08/15 12:07:28 ad Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: darwin_sysctl.c,v 1.53 2007/08/15 12:07:28 ad Exp $");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/signal.h>
#include <sys/mount.h>
#include <sys/exec.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/sysctl.h>
#include <sys/ktrace.h>
#include <sys/tty.h>
#include <sys/kauth.h>
#include <sys/syscallargs.h>
#include <uvm/uvm_extern.h>
#include <miscfs/specfs/specdev.h>
#include <compat/sys/signal.h>
#include <compat/sys/signalvar.h>
#include <compat/mach/mach_types.h>
#include <compat/mach/mach_vm.h>
#include <compat/darwin/darwin_audit.h>
#include <compat/darwin/darwin_types.h>
#include <compat/darwin/darwin_exec.h>
#include <compat/darwin/darwin_sysctl.h>
#include <compat/darwin/darwin_proc.h>
#include <compat/darwin/darwin_route.h>
#include <compat/darwin/darwin_syscallargs.h>
pid_t darwin_init_pid = 0;
int darwin_ioframebuffer_unit = 0;
int darwin_ioframebuffer_screen = 0;
int darwin_iohidsystem_mux = 0;
static const char *darwin_sysctl_hw_machine = "Power Macintosh";
static int darwin_sysctl_dokproc(SYSCTLFN_PROTO);
static void darwin_fill_kproc(struct proc *, struct darwin_kinfo_proc *);
static void native_to_darwin_pflag(int *, struct proc *);
static int darwin_sysctl_procargs(SYSCTLFN_PROTO);
static int darwin_sysctl_net(SYSCTLFN_PROTO);
static int darwin_sysctl_kdebug(SYSCTLFN_PROTO);
static struct sysctlnode darwin_sysctl_root = {
.sysctl_flags = SYSCTL_VERSION|CTLFLAG_ROOT|CTLTYPE_NODE,
.sysctl_num = 0,
sysc_init_field(_sysctl_size, sizeof(struct sysctlnode)),
.sysctl_name = "(darwin_root)",
};
static int
darwin_sysctl_redispatch(SYSCTLFN_ARGS)
{
/*
* put namelen and name back at the top
*/
namelen += (name - oname);
name = oname;
/*
* call into (via NULL) main native tree
*/
return sysctl_dispatch(SYSCTLFN_CALL(NULL));
}
/*
* this setup routine is a complement to darwin_sys___sysctl()
*/
SYSCTL_SETUP(sysctl_darwin_emul_setup, "darwin emulated sysctl tree setup")
{
const struct sysctlnode *_root = &darwin_sysctl_root;
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "kern", NULL,
NULL, 0, NULL, 0,
DARWIN_CTL_KERN, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "ostype", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_OSTYPE, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "osrelease", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_OSRELEASE, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "osrevision", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_OSREV, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "version", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_VERSION, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "maxvnodes", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_MAXVNODES, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "maxproc", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_MAXPROC, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "maxfiles", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_MAXFILES, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "argmax", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_ARGMAX, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "securelevel", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_SECURELVL, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "hostname", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_HOSTNAME, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "hostid", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_HOSTID, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "clockrate", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_CLOCKRATE, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "vnode", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_VNODE, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "file", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_FILE, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "profiling", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_PROF, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "posix1version", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_POSIX1, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "ngroups", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_NGROUPS, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "job_control", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_JOB_CONTROL, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "saved_ids", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_SAVED_IDS, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "boottime", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_BOOTTIME, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "nisdomainname", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_NISDOMAINNAME, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "maxpartitions", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_MAXPARTITIONS, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "kdebug", NULL,
darwin_sysctl_kdebug, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_KDEBUG, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "procargs", NULL,
darwin_sysctl_procargs, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_PROCARGS, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "proc", NULL,
darwin_sysctl_dokproc, 0, NULL, 0,
DARWIN_CTL_KERN, DARWIN_KERN_PROC, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "hw", NULL,
NULL, 0, NULL, 0,
DARWIN_CTL_HW, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "machine", NULL,
/*XXXUNCONST*/
NULL, 0, __UNCONST(darwin_sysctl_hw_machine), 0,
DARWIN_CTL_HW, DARWIN_HW_MACHINE, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "ncpu", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_HW, DARWIN_HW_NCPU, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "vectorunit", NULL,
NULL, 0, NULL, 0,
DARWIN_CTL_HW, DARWIN_HW_VECTORUNIT, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "pagesize", NULL,
darwin_sysctl_redispatch, 0, NULL, 0,
DARWIN_CTL_HW, DARWIN_HW_PAGESIZE, CTL_EOL);
sysctl_createv(clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "net", NULL,
darwin_sysctl_net, 0, NULL, 0,
DARWIN_CTL_NET, CTL_EOL);
}
int
darwin_sys___sysctl(struct lwp *l, void *v, register_t *retval)
{
struct darwin_sys___sysctl_args *uap = v;
int error, nerror, name[CTL_MAXNAME];
size_t savelen = 0, oldlen = 0;
/*
* get oldlen
*/
oldlen = 0;
if (SCARG(uap, oldlenp) != NULL) {
error = copyin(SCARG(uap, oldlenp), &oldlen, sizeof(oldlen));
if (error)
return (error);
}
savelen = oldlen;
/*
* top-level sysctl names may or may not be non-terminal, but
* we don't care
*/
if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 1)
return (EINVAL);
error = copyin(SCARG(uap, name), &name,
SCARG(uap, namelen) * sizeof(int));
if (error)
return (error);
ktrmib(name, SCARG(uap, namelen));
/*
* wire old so that copyout() is less likely to fail?
*/
error = sysctl_lock(l, SCARG(uap, oldp), savelen);
if (error)
return (error);
/*
* dispatch request into darwin sysctl tree
*/
error = sysctl_dispatch(&name[0], SCARG(uap, namelen),
SCARG(uap, oldp), &oldlen,
SCARG(uap, newp), SCARG(uap, newlen),
&name[0], l, &darwin_sysctl_root);
/*
* release the sysctl lock
*/
sysctl_unlock(l);
/*
* reset caller's oldlen, even if we got an error
*/
if (SCARG(uap, oldlenp) != NULL) {
nerror = copyout(&oldlen, SCARG(uap, oldlenp), sizeof(oldlen));
if (error == 0)
error = nerror;
}
/*
* if the only problem is that we weren't given enough space,
* that's an ENOMEM error
*/
if (error == 0 && SCARG(uap, oldp) != NULL && savelen < oldlen)
error = ENOMEM;
return (error);
}
SYSCTL_SETUP(sysctl_emul_darwin_setup, "sysctl emul.darwin subtree setup")
{
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "emul", NULL,
NULL, 0, NULL, 0,
CTL_EMUL, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "darwin",
SYSCTL_DESCR("Darwin emulation settings"),
NULL, 0, NULL, 0,
CTL_EMUL, EMUL_DARWIN, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "init",
SYSCTL_DESCR("Darwin init(8) process settings"),
NULL, 0, NULL, 0,
CTL_EMUL, EMUL_DARWIN,
EMUL_DARWIN_INIT, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "ioframebuffer",
SYSCTL_DESCR("Darwin framebuffer settings"),
NULL, 0, NULL, 0,
CTL_EMUL, EMUL_DARWIN,
EMUL_DARWIN_IOFRAMEBUFFER, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "iohidsystem",
SYSCTL_DESCR("Darwin HID system settings"),
NULL, 0, NULL, 0,
CTL_EMUL, EMUL_DARWIN,
EMUL_DARWIN_IOHIDSYSTEM, CTL_EOL);
/*
* XXX - darwin_init_pid is a pid_t, not an int
*/
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "pid",
SYSCTL_DESCR("Pid of Darwin init(8) process"),
NULL, 0, &darwin_init_pid, 0,
CTL_EMUL, EMUL_DARWIN, EMUL_DARWIN_INIT,
EMUL_DARWIN_INIT_PID, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "unit",
SYSCTL_DESCR("Darwin framebuffer unit number"),
NULL, 0, &darwin_ioframebuffer_unit, 0,
CTL_EMUL, EMUL_DARWIN, EMUL_DARWIN_IOFRAMEBUFFER,
EMUL_DARWIN_IOFRAMEBUFFER_UNIT, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "screen",
SYSCTL_DESCR("Darwin framebuffer screen number"),
NULL, 0, &darwin_ioframebuffer_screen, 0,
CTL_EMUL, EMUL_DARWIN, EMUL_DARWIN_IOFRAMEBUFFER,
EMUL_DARWIN_IOFRAMEBUFFER_SCREEN, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "mux",
SYSCTL_DESCR("Darwin HID system mux"),
NULL, 0, &darwin_iohidsystem_mux, 0,
CTL_EMUL, EMUL_DARWIN, EMUL_DARWIN_IOHIDSYSTEM,
EMUL_DARWIN_IOHIDSYSTEM_MUX, CTL_EOL);
}
/*
* On Darwin, mach_init is the system bootstrap process. It is responsible
* for forking the traditional UNIX init(8) and it does the Mach port naming
* service. We need mach_init for the naming service, but unfortunately, it
* will only act as such if its PID is 1. We use a sysctl
* (emul.darwin.init.pid) to fool a given process into thinking its PID is 1.
* That way we can run mach_init when we want to.
* Typical use:
* sysctl -w emul.darwin.init.pid=$$; exec /emul/darwin/sbin/mach_init
*
* The same problem exists after mach_init has forked init: the fork libc stub
* really insist on the child to have PID 2 (if PID is not 2, then the stub
* will issue bootstrap calls to an already running mach_init, which fails,
* of course).
*/
int
darwin_sys_getpid(struct lwp *l, void *v, register_t *retval)
{
struct darwin_emuldata *ded;
struct proc *p = l->l_proc;
ded = (struct darwin_emuldata *)p->p_emuldata;
printf("pid %d: fakepid = %d, mach_init_pid = %d\n",
p->p_pid, ded->ded_fakepid, darwin_init_pid);
if (ded->ded_fakepid != 0)
*retval = ded->ded_fakepid;
else
*retval = p->p_pid;
return 0;
}
#define DARWIN_ENTROPYMAX 65536
static int
darwin_sysctl_kdebug(SYSCTLFN_ARGS)
{
if (namelen < 1)
return EINVAL;
switch (name[0]) {
/*
* Get random dates between now and mstimeout (miliseconds)
*/
case DARWIN_KERN_KDGETENTROPY: {
int count;
int mstimeout;
int error;
struct timespec *buf;
struct timeval now, last, timeout;
unsigned long long lnow, ltimeout;
int i;
if (namelen != 2)
return EINVAL;
if (name[1] < 10)
mstimeout = 10;
else
mstimeout = name[1];
count = *oldlenp / sizeof(*buf);
if (count > DARWIN_ENTROPYMAX)
return ENOMEM;
buf = malloc(sizeof(*buf) * count, M_TEMP, M_ZERO|M_WAITOK);
microtime(&now);
last.tv_sec = now.tv_sec;
last.tv_usec = now.tv_usec;
timeout.tv_sec = mstimeout / 1000;
timeout.tv_usec = (mstimeout % 1000) * 1000;
lnow = (now.tv_sec * 1000000) + now.tv_usec;
ltimeout = (timeout.tv_sec * 1000000) + timeout.tv_usec;
for (i = 0; i < count; i++) {
unsigned long long rnd = random();
struct timeval item, new;
rnd *= (ltimeout / count);
rnd >>= 32;
item.tv_sec = rnd / 1000;
item.tv_usec = rnd % 1000;
timeradd(&last, &item, &new);
TIMEVAL_TO_TIMESPEC(&new, &buf[i]);
last.tv_sec = new.tv_sec;
last.tv_usec = new.tv_usec;
}
tsleep(&timeout, PZERO|PCATCH, "darwin_entropy",
(mstimeout * hz / 1000));
/* Just in case... */
if (sizeof(*buf) * count < *oldlenp)
*oldlenp = sizeof(*buf) * count;
error = copyout(buf, oldp, *oldlenp);
free(buf, M_TEMP);
/*
* The return value is the number of record
* instead of the size of the copied data.
*/
*oldlenp = *oldlenp / sizeof(*buf);
return error;
break;
}
default:
return EINVAL;
break;
}
return 0;
}
static int
darwin_sysctl_net(SYSCTLFN_ARGS)
{
int af;
/*
* A strange thing: thrid level is zero, but I don't understand
* what it stands for.
* All nodes here are of form [net.]<address family>.<zero>.*
*/
if (namelen < 3)
return EINVAL;
if ((af = name[0]) != AF_ROUTE) {
printf("unimplemented sysctl net.%d\n", af);
return EINVAL;
}
#ifdef DEBUG_DARWIN
if (name[1] != 0)
printf("sysctl net.af.%d\n", name[1]);
#endif
if (namelen < 4)
return EINVAL;
switch (name[3]) {
case DARWIN_NET_RT_DUMP:
printf("unimplemented sysctl DARWIN_NET_RT_DUMP\n");
return EINVAL;
break;
case DARWIN_NET_RT_FLAGS:
printf("unimplemented sysctl DARWIN_NET_RT_FLAGS\n");
return EINVAL;
break;
case DARWIN_NET_RT_IFLIST:
return darwin_ifaddrs(name[2], oldp, oldlenp);
break;
default:
return EINVAL;
break;
}
/* NOTREACHED */
return 0;
}
/*
* This is stolen from sys/kern/kern_sysctl.c:sysctl_doeproc()
*/
#define DARWIN_KERN_PROCSLOP (5 * sizeof(struct darwin_kinfo_proc))
static int
darwin_sysctl_dokproc(SYSCTLFN_ARGS)
{
struct darwin_kinfo_proc kproc;
struct darwin_kinfo_proc *dp;
struct proc *p;
const struct proclist_desc *pd;
char *where, *dp2;
int type, op, arg;
u_int elem_size, elem_count;
size_t buflen, needed;
int error;
if (newp != NULL)
return (EPERM);
dp = oldp;
dp2 = where = oldp;
buflen = where != NULL ? *oldlenp : 0;
error = 0;
needed = 0;
type = rnode->sysctl_num;
if (type == DARWIN_KERN_PROC) {
if (namelen != 2 &&
!(namelen == 1 && name[0] == DARWIN_KERN_PROC_ALL))
return (EINVAL);
op = name[0];
if (op != DARWIN_KERN_PROC_ALL)
arg = name[1];
else
arg = 0; /* Quell compiler warning */
elem_size = elem_count = 0; /* Ditto */
} else {
if (namelen != 4)
return (EINVAL);
op = name[0];
arg = name[1];
elem_size = name[2];
elem_count = name[3];
}
mutex_enter(&proclist_lock);
pd = proclists;
again:
PROCLIST_FOREACH(p, pd->pd_list) {
/*
* Skip embryonic processes.
*/
if (p->p_stat == SIDL)
continue;
/*
* TODO - make more efficient (see notes below).
* do by session.
*/
switch (op) {
case DARWIN_KERN_PROC_PID:
/* could do this with just a lookup */
if (p->p_pid != (pid_t)arg)
continue;
break;
case DARWIN_KERN_PROC_PGRP:
/* could do this by traversing pgrp */
if (p->p_pgrp->pg_id != (pid_t)arg)
continue;
break;
case DARWIN_KERN_PROC_SESSION:
if (p->p_session->s_sid != (pid_t)arg)
continue;
break;
case DARWIN_KERN_PROC_TTY:
if (arg == (int) KERN_PROC_TTY_REVOKE) {
if ((p->p_lflag & PL_CONTROLT) == 0 ||
p->p_session->s_ttyp == NULL ||
p->p_session->s_ttyvp != NULL)
continue;
} else if ((p->p_lflag & PL_CONTROLT) == 0 ||
p->p_session->s_ttyp == NULL) {
continue;
} else if (p->p_session->s_ttyp->t_dev !=
darwin_to_native_dev((dev_t)arg))
continue;
break;
case DARWIN_KERN_PROC_UID:
if (kauth_cred_geteuid(p->p_cred) != (uid_t)arg)
continue;
break;
case DARWIN_KERN_PROC_RUID:
if (kauth_cred_getuid(p->p_cred) != (uid_t)arg)
continue;
break;
case DARWIN_KERN_PROC_ALL:
/* allow everything */
break;
default:
error = EINVAL;
goto cleanup;
}
if (buflen >= sizeof(struct darwin_kinfo_proc)) {
darwin_fill_kproc(p, &kproc);
error = copyout((void *)&kproc, dp, sizeof(kproc));
if (error)
goto cleanup;
dp++;
buflen -= sizeof(struct darwin_kinfo_proc);
}
needed += sizeof(struct darwin_kinfo_proc);
}
pd++;
if (pd->pd_list != NULL)
goto again;
mutex_exit(&proclist_lock);
if (where != NULL) {
*oldlenp = (char *)dp - where;
if (needed > *oldlenp)
return (ENOMEM);
} else {
needed += DARWIN_KERN_PROCSLOP;
*oldlenp = needed;
}
return (0);
cleanup:
mutex_exit(&proclist_lock);
return (error);
}
/*
* Native struct proc to Darwin's struct kinfo_proc
*/
static void
darwin_fill_kproc(p, dkp)
struct proc *p;
struct darwin_kinfo_proc *dkp;
{
struct lwp *l;
struct darwin_extern_proc *dep;
struct darwin_eproc *de;
printf("fillkproc: pid %d\n", p->p_pid);
l = proc_representative_lwp(p, NULL, 1);
(void)memset(dkp, 0, sizeof(*dkp));
dep = (struct darwin_extern_proc *)&dkp->kp_proc;
de = (struct darwin_eproc *)&dkp->kp_eproc;
/* (ptr) dep->p_un */
/* (ptr) dep->p_vmspace */
/* (ptr) dep->p_sigacts */
native_to_darwin_pflag(&dep->p_flag, p);
dep->p_stat = p->p_stat; /* XXX Neary the same */
dep->p_pid = p->p_pid;
dep->p_oppid = p->p_opptr->p_pid;
dep->p_dupfd = curlwp->l_dupfd; /* XXX */
/* dep->userstack */
/* dep->exit_thread */
/* dep->p_debugger */
/* dep->p_sigwait */
dep->p_estcpu = p->p_estcpu;
/* dep->p_cpticks */
dep->p_pctcpu = p->p_pctcpu;
/* (ptr) dep->p_wchan */
/* (ptr) dep->p_wmesg */
/* dep->p_swtime */
/* dep->p_slptime */
/* dep->p_realtimer */
memcpy(&dep->p_rtime, &p->p_rtime, sizeof(p->p_rtime));
dep->p_uticks = p->p_uticks;
dep->p_sticks = p->p_sticks;
dep->p_iticks = p->p_iticks;
dep->p_traceflag = p->p_traceflag; /* XXX */
/* (ptr) dep->p_tracep */
native_sigset13_to_sigset(&dep->p_siglist, &l->l_sigpendset->sp_set);
/* (ptr) dep->p_textvp */
/* dep->p_holdcnt */
native_sigset13_to_sigset(&dep->p_sigmask, &l->l_sigmask);
native_sigset13_to_sigset(&dep->p_sigignore,
&p->p_sigctx.ps_sigignore);
native_sigset13_to_sigset(&dep->p_sigcatch,
&p->p_sigctx.ps_sigcatch);
dep->p_priority = l->l_priority;
dep->p_nice = p->p_nice;
(void)strlcpy(dep->p_comm, p->p_comm, DARWIN_MAXCOMLEN);
/* (ptr) dep->p_pgrp */
/* (ptr) dep->p_addr */
dep->p_xstat = p->p_xstat;
dep->p_acflag = p->p_acflag; /* XXX accounting flags */
/* (ptr) dep->p_ru */
/* (ptr) */ de->e_paddr = (struct darwin_proc *)p;
/* (ptr) */ de->e_sess =
(struct darwin_session *)p->p_session;
de->e_pcred.pc_ruid = kauth_cred_getuid(p->p_cred);
de->e_pcred.pc_svuid = kauth_cred_getsvuid(p->p_cred);
de->e_pcred.pc_rgid = kauth_cred_getgid(p->p_cred);
de->e_pcred.pc_svgid = kauth_cred_getsvgid(p->p_cred);
de->e_pcred.pc_refcnt = kauth_cred_getrefcnt(p->p_cred);
/* XXX elad ? de->e_ucred.cr_ref = p->p_ucred->cr_ref; */
/* XXX elad ? de->e_ucred.cr_ref = kauth_cred_getrefcnt(p->p_cred); */
de->e_ucred.cr_uid = kauth_cred_geteuid(p->p_cred);
de->e_ucred.cr_ngroups = kauth_cred_ngroups(p->p_cred);
kauth_cred_getgroups(p->p_cred, de->e_ucred.cr_groups,
sizeof(de->e_ucred.cr_groups) / sizeof(de->e_ucred.cr_groups[0]),
UIO_SYSSPACE);
de->e_vm.vm_refcnt = p->p_vmspace->vm_refcnt;
de->e_vm.vm_rssize = p->p_vmspace->vm_rssize;
de->e_vm.vm_swrss = p->p_vmspace->vm_swrss;
de->e_vm.vm_tsize = p->p_vmspace->vm_tsize;
de->e_vm.vm_dsize = p->p_vmspace->vm_dsize;
de->e_vm.vm_ssize = p->p_vmspace->vm_ssize;
de->e_vm.vm_taddr = p->p_vmspace->vm_taddr;
de->e_vm.vm_daddr = p->p_vmspace->vm_daddr;
de->e_vm.vm_maxsaddr = p->p_vmspace->vm_maxsaddr;
de->e_ppid = p->p_pptr->p_pid;
de->e_pgid = p->p_pgid;
de->e_jobc = p->p_pgrp->pg_jobc;
if ((p->p_lflag & PL_CONTROLT) && (p->p_session->s_ttyp != NULL)) {
de->e_tdev =
native_to_darwin_dev(p->p_session->s_ttyp->t_dev);
de->e_tpgid = p->p_session->s_ttyp->t_pgrp ?
p->p_session->s_ttyp->t_pgrp->pg_id : NO_PGID;
/* (ptr) */ de->e_tsess = (struct darwin_session *)
p->p_session->s_ttyp->t_session;
} else {
de->e_tdev = NODEV;
/* de->e_tpgid */
/* (ptr) de->e_tsess */
}
if (l->l_wmesg)
strlcpy(de->e_wmesg, l->l_wmesg, DARWIN_WMESGLEN);
de->e_xsize = 0;
de->e_xrssize = 0;
de->e_xccount = 0;
de->e_xswrss = 0;
de->e_flag = p->p_session->s_ttyvp ? DARWIN_EPROC_CTTY : 0;
if (SESS_LEADER(p))
de->e_flag |= DARWIN_EPROC_SLEADER;
(void)strlcpy(de->e_login,
p->p_session->s_login, DARWIN_COMAPT_MAXLOGNAME);
/* de->e_spare */
return;
}
static void
native_to_darwin_pflag(int *dfp, struct proc *p)
{
int df = 0;
int bf = p->p_flag;
int bsf = p->p_sflag;
int bslf = p->p_slflag;
struct lwp *l = proc_representative_lwp(p, NULL, 1);
int lf = l->l_flag;
if (bf & PK_ADVLOCK)
df |= DARWIN_P_ADVLOCK;
if (bf & PL_CONTROLT) /* XXXAD */
df |= DARWIN_P_CONTROLT;
if (bsf & PS_NOCLDSTOP)
df |= DARWIN_P_NOCLDSTOP;
if (bsf & PS_PPWAIT)
df |= DARWIN_P_PPWAIT;
if (bsf & PST_PROFIL)
df |= DARWIN_P_PROFIL;
if (bf & PK_SUGID)
df |= DARWIN_P_SUGID;
if (bf & PK_SYSTEM)
df |= DARWIN_P_SYSTEM;
if (bslf & PSL_TRACED)
df |= DARWIN_P_TRACED;
#if 0
if (lf & LP_WAITED)
df |= DARWIN_P_WAITED;
#endif
if (bsf & PS_WEXIT)
df |= DARWIN_P_WEXIT;
if (bf & PK_EXEC)
df |= DARWIN_P_EXEC;
if (lf & LP_OWEUPC)
df |= DARWIN_P_OWEUPC;
if (bslf & PSL_FSTRACE)
df |= DARWIN_P_FSTRACE;
if (bf & PK_NOCLDWAIT)
df |= DARWIN_P_NOCLDWAIT;
*dfp = df;
return;
}
/* Derived from sys/kern/kern_sysctl.c:sysctl_procargs() */
static int
darwin_sysctl_procargs(SYSCTLFN_ARGS)
{
struct ps_strings pss;
struct proc *p;
size_t len, upper_bound, xlen, i;
struct uio auio;
struct iovec aiov;
vaddr_t argv;
pid_t pid;
int nargv, nenv, nstr, error;
char *arg;
char *tmp;
if (namelen != 1)
return (EINVAL);
pid = name[0];
/* check pid */
if ((p = pfind(pid)) == NULL)
return (EINVAL);
/* only root or same user change look at the environment */
if (kauth_cred_geteuid(l->l_cred) != 0) {
if (kauth_cred_getuid(l->l_cred) !=
kauth_cred_getuid(p->p_cred) ||
kauth_cred_getuid(l->l_cred) !=
kauth_cred_getsvuid(p->p_cred))
return (EPERM);
}
if (oldp == NULL) {
*oldlenp = ARG_MAX; /* XXX XXX XXX */
return (0);
}
/*
* Zombies don't have a stack, so we can't read their psstrings.
* System processes also don't have a user stack.
*/
if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0)
return (EINVAL);
/*
* Lock the process down in memory.
*/
/* XXXCDC: how should locking work here? */
if ((p->p_sflag & PS_WEXIT) || (p->p_vmspace->vm_refcnt < 1))
return (EFAULT);
p->p_vmspace->vm_refcnt++; /* XXX */
/*
* Allocate a temporary buffer to hold the arguments.
*/
arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK);
/*
* Zero fill the destination buffer.
*/
(void)memset(arg, 0, PAGE_SIZE);
upper_bound = *oldlenp;
len = 0;
while (len < upper_bound) {
if (len + PAGE_SIZE > upper_bound)
xlen = len - upper_bound;
else
xlen = PAGE_SIZE;
if ((error = copyout(arg, (char *)oldp + len, xlen)) != 0)
goto done;
len += PAGE_SIZE;
}
/*
* Read in the ps_strings structure.
*/
aiov.iov_base = &pss;
aiov.iov_len = sizeof(pss);
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = (vaddr_t)p->p_psstr;
auio.uio_resid = sizeof(pss);
auio.uio_rw = UIO_READ;
UIO_SETUP_SYSSPACE(&auio);
if ((error = uvm_io(&p->p_vmspace->vm_map, &auio)) != 0)
goto done;
/*
* Get argument vector address and length. Since we want to
* copy argv and env at the same time, we add their lengths.
*/
memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv));
memcpy(&nenv, (char *)&pss + p->p_psnenv, sizeof(nargv));
nstr = nargv + nenv;
memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp));
auio.uio_offset = (off_t)(long)tmp;
aiov.iov_base = &argv;
aiov.iov_len = sizeof(argv);
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_resid = sizeof(argv);
auio.uio_rw = UIO_READ;
UIO_SETUP_SYSSPACE(&auio);
if ((error = uvm_io(&p->p_vmspace->vm_map, &auio)) != 0)
goto done;
/*
* Check the whole argument vector to discover its size
* We have to do this since Darwin's ps insist about having
* the data at the end of the buffer.
*/
len = 0;
upper_bound = *oldlenp;
for (; nstr != 0 && len < upper_bound; len += xlen) {
aiov.iov_base = arg;
aiov.iov_len = PAGE_SIZE;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = argv + len;
xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK);
auio.uio_resid = xlen;
auio.uio_rw = UIO_READ;
UIO_SETUP_SYSSPACE(&auio);
error = uvm_io(&p->p_vmspace->vm_map, &auio);
if (error)
goto done;
for (i = 0;i < xlen && nstr != 0; i++) {
if (arg[i] == '\0')
nstr--; /* one full string */
}
/*
* Make sure we don't reach the
* end of the user's buffer.
*/
if (len + i > upper_bound)
i = upper_bound - len;
if (nstr == 0) {
len += i;
break;
}
}
/*
* Try to keep one null word at the
* end, and align on a word boundary
*/
len = (((u_long)oldp + len - 5) & ~0x3UL) - (u_long)oldp;
len = upper_bound - len;
/*
* Align to a word boundary, and copy the program name
*/
len = (((u_long)oldp + len - 1) & ~0x3UL) - (u_long)oldp;
len = len - strlen(p->p_comm);
if (len > upper_bound)
len = upper_bound;
error = copyout(p->p_comm, (char *)oldp + len, strlen(p->p_comm) + 1);
if (error != 0)
goto done;
len = len + strlen(p->p_comm);
len = (((u_long)oldp + len + 5) & ~0x3UL) - (u_long)oldp;
/*
* Now copy in the actual argument vector, one page at a time,
* since we don't know how long the vector is (though, we do
* know how many NUL-terminated strings are in the vector).
*/
upper_bound = *oldlenp;
nstr = nargv + nenv;
for (; nstr != 0 && len < upper_bound; len += xlen) {
aiov.iov_base = arg;
aiov.iov_len = PAGE_SIZE;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = argv + len;
xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK);
auio.uio_resid = xlen;
auio.uio_rw = UIO_READ;
UIO_SETUP_SYSSPACE(&auio);
error = uvm_io(&p->p_vmspace->vm_map, &auio);
if (error)
goto done;
for (i = 0;i < xlen && nstr != 0; i++) {
if (arg[i] == '\0')
nstr--; /* one full string */
}
/*
* Make sure we don't copyout past the end of the user's
* buffer.
*/
if (len + i > upper_bound)
i = upper_bound - len;
if ((error = copyout(arg, (char *)oldp + len, i)) != 0)
break;
if (nstr == 0) {
len += i;
break;
}
}
done:
uvmspace_free(p->p_vmspace);
free(arg, M_TEMP);
return (error);
}
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