612 lines
13 KiB
C
612 lines
13 KiB
C
/* $NetBSD: prop_kern.c,v 1.17 2011/09/30 22:08:18 jym Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2006, 2009 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe.
|
|
*
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#if defined(__NetBSD__)
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <prop/proplib.h>
|
|
|
|
#if !defined(_KERNEL) && !defined(_STANDALONE)
|
|
#include <sys/mman.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
#ifdef RUMP_ACTION
|
|
#include <rump/rump_syscalls.h>
|
|
#define ioctl(a,b,c) rump_sys_ioctl(a,b,c)
|
|
#endif
|
|
|
|
static int
|
|
_prop_object_externalize_to_pref(prop_object_t obj, struct plistref *pref,
|
|
char **bufp)
|
|
{
|
|
char *buf;
|
|
|
|
switch (prop_object_type(obj)) {
|
|
case PROP_TYPE_DICTIONARY:
|
|
buf = prop_dictionary_externalize(obj);
|
|
break;
|
|
case PROP_TYPE_ARRAY:
|
|
buf = prop_array_externalize(obj);
|
|
break;
|
|
default:
|
|
return (ENOTSUP);
|
|
}
|
|
if (buf == NULL) {
|
|
/* Assume we ran out of memory. */
|
|
return (ENOMEM);
|
|
}
|
|
pref->pref_plist = buf;
|
|
pref->pref_len = strlen(buf) + 1;
|
|
|
|
*bufp = buf;
|
|
|
|
return (0);
|
|
}
|
|
|
|
bool
|
|
prop_array_externalize_to_pref(prop_array_t array, struct plistref *prefp)
|
|
{
|
|
char *buf;
|
|
int rv;
|
|
|
|
rv = _prop_object_externalize_to_pref(array, prefp, &buf);
|
|
if (rv != 0)
|
|
errno = rv; /* pass up error value in errno */
|
|
return (rv == 0);
|
|
}
|
|
|
|
/*
|
|
* prop_array_externalize_to_pref --
|
|
* Externalize an array into a plistref for sending to the kernel.
|
|
*/
|
|
int
|
|
prop_array_send_syscall(prop_array_t array, struct plistref *prefp)
|
|
{
|
|
if (prop_array_externalize_to_pref(array, prefp))
|
|
return 0;
|
|
else
|
|
return errno;
|
|
}
|
|
|
|
bool
|
|
prop_dictionary_externalize_to_pref(prop_dictionary_t dict,
|
|
struct plistref *prefp)
|
|
{
|
|
char *buf;
|
|
int rv;
|
|
|
|
rv = _prop_object_externalize_to_pref(dict, prefp, &buf);
|
|
if (rv != 0)
|
|
errno = rv; /* pass up error value in errno */
|
|
return (rv == 0);
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_externalize_to_pref --
|
|
* Externalize an dictionary into a plistref for sending to the kernel.
|
|
*/
|
|
int
|
|
prop_dictionary_send_syscall(prop_dictionary_t dict,
|
|
struct plistref *prefp)
|
|
{
|
|
if (prop_dictionary_externalize_to_pref(dict, prefp))
|
|
return 0;
|
|
else
|
|
return errno;
|
|
}
|
|
|
|
static int
|
|
_prop_object_send_ioctl(prop_object_t obj, int fd, unsigned long cmd)
|
|
{
|
|
struct plistref pref;
|
|
char *buf;
|
|
int error;
|
|
|
|
error = _prop_object_externalize_to_pref(obj, &pref, &buf);
|
|
if (error)
|
|
return (error);
|
|
|
|
if (ioctl(fd, cmd, &pref) == -1)
|
|
error = errno;
|
|
else
|
|
error = 0;
|
|
|
|
free(buf);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* prop_array_send_ioctl --
|
|
* Send an array to the kernel using the specified ioctl.
|
|
*/
|
|
int
|
|
prop_array_send_ioctl(prop_array_t array, int fd, unsigned long cmd)
|
|
{
|
|
int rv;
|
|
|
|
rv = _prop_object_send_ioctl(array, fd, cmd);
|
|
if (rv != 0) {
|
|
errno = rv; /* pass up error value in errno */
|
|
return rv;
|
|
} else
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_send_ioctl --
|
|
* Send a dictionary to the kernel using the specified ioctl.
|
|
*/
|
|
int
|
|
prop_dictionary_send_ioctl(prop_dictionary_t dict, int fd, unsigned long cmd)
|
|
{
|
|
int rv;
|
|
|
|
rv = _prop_object_send_ioctl(dict, fd, cmd);
|
|
if (rv != 0) {
|
|
errno = rv; /* pass up error value in errno */
|
|
return rv;
|
|
} else
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
_prop_object_internalize_from_pref(const struct plistref *pref,
|
|
prop_type_t type, prop_object_t *objp)
|
|
{
|
|
prop_object_t obj = NULL;
|
|
char *buf;
|
|
int error = 0;
|
|
|
|
if (pref->pref_len == 0) {
|
|
/*
|
|
* This should never happen; we should always get the XML
|
|
* for an empty dictionary if it's really empty.
|
|
*/
|
|
error = EIO;
|
|
goto out;
|
|
} else {
|
|
buf = pref->pref_plist;
|
|
buf[pref->pref_len - 1] = '\0'; /* extra insurance */
|
|
switch (type) {
|
|
case PROP_TYPE_DICTIONARY:
|
|
obj = prop_dictionary_internalize(buf);
|
|
break;
|
|
case PROP_TYPE_ARRAY:
|
|
obj = prop_array_internalize(buf);
|
|
break;
|
|
default:
|
|
error = ENOTSUP;
|
|
}
|
|
(void) munmap(buf, pref->pref_len);
|
|
if (obj == NULL && error == 0)
|
|
error = EIO;
|
|
}
|
|
|
|
out:
|
|
if (error == 0)
|
|
*objp = obj;
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* prop_array_internalize_from_pref --
|
|
* Internalize a pref into a prop_array_t object.
|
|
*/
|
|
bool
|
|
prop_array_internalize_from_pref(const struct plistref *prefp,
|
|
prop_array_t *arrayp)
|
|
{
|
|
int rv;
|
|
|
|
rv = _prop_object_internalize_from_pref(prefp, PROP_TYPE_ARRAY,
|
|
(prop_object_t *)arrayp);
|
|
if (rv != 0)
|
|
errno = rv; /* pass up error value in errno */
|
|
return (rv == 0);
|
|
}
|
|
|
|
/*
|
|
* prop_array_recv_syscall --
|
|
* Internalize an array received from the kernel as pref.
|
|
*/
|
|
int
|
|
prop_array_recv_syscall(const struct plistref *prefp,
|
|
prop_array_t *arrayp)
|
|
{
|
|
if (prop_array_internalize_from_pref(prefp, arrayp))
|
|
return 0;
|
|
else
|
|
return errno;
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_internalize_from_pref --
|
|
* Internalize a pref into a prop_dictionary_t object.
|
|
*/
|
|
bool
|
|
prop_dictionary_internalize_from_pref(const struct plistref *prefp,
|
|
prop_dictionary_t *dictp)
|
|
{
|
|
int rv;
|
|
|
|
rv = _prop_object_internalize_from_pref(prefp, PROP_TYPE_DICTIONARY,
|
|
(prop_object_t *)dictp);
|
|
if (rv != 0)
|
|
errno = rv; /* pass up error value in errno */
|
|
return (rv == 0);
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_recv_syscall --
|
|
* Internalize a dictionary received from the kernel as pref.
|
|
*/
|
|
int
|
|
prop_dictionary_recv_syscall(const struct plistref *prefp,
|
|
prop_dictionary_t *dictp)
|
|
{
|
|
if (prop_dictionary_internalize_from_pref(prefp, dictp))
|
|
return 0;
|
|
else
|
|
return errno;
|
|
}
|
|
|
|
|
|
/*
|
|
* prop_array_recv_ioctl --
|
|
* Receive an array from the kernel using the specified ioctl.
|
|
*/
|
|
int
|
|
prop_array_recv_ioctl(int fd, unsigned long cmd, prop_array_t *arrayp)
|
|
{
|
|
int rv;
|
|
struct plistref pref;
|
|
|
|
rv = ioctl(fd, cmd, &pref);
|
|
if (rv == -1)
|
|
return errno;
|
|
|
|
rv = _prop_object_internalize_from_pref(&pref, PROP_TYPE_ARRAY,
|
|
(prop_object_t *)arrayp);
|
|
if (rv != 0) {
|
|
errno = rv; /* pass up error value in errno */
|
|
return rv;
|
|
} else
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_recv_ioctl --
|
|
* Receive a dictionary from the kernel using the specified ioctl.
|
|
*/
|
|
int
|
|
prop_dictionary_recv_ioctl(int fd, unsigned long cmd, prop_dictionary_t *dictp)
|
|
{
|
|
int rv;
|
|
struct plistref pref;
|
|
|
|
rv = ioctl(fd, cmd, &pref);
|
|
if (rv == -1)
|
|
return errno;
|
|
|
|
rv = _prop_object_internalize_from_pref(&pref, PROP_TYPE_DICTIONARY,
|
|
(prop_object_t *)dictp);
|
|
if (rv != 0) {
|
|
errno = rv; /* pass up error value in errno */
|
|
return rv;
|
|
} else
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_sendrecv_ioctl --
|
|
* Combination send/receive a dictionary to/from the kernel using
|
|
* the specified ioctl.
|
|
*/
|
|
int
|
|
prop_dictionary_sendrecv_ioctl(prop_dictionary_t dict, int fd,
|
|
unsigned long cmd, prop_dictionary_t *dictp)
|
|
{
|
|
struct plistref pref;
|
|
char *buf;
|
|
int error;
|
|
|
|
error = _prop_object_externalize_to_pref(dict, &pref, &buf);
|
|
if (error != 0) {
|
|
errno = error;
|
|
return error;
|
|
}
|
|
|
|
if (ioctl(fd, cmd, &pref) == -1)
|
|
error = errno;
|
|
else
|
|
error = 0;
|
|
|
|
free(buf);
|
|
|
|
if (error != 0)
|
|
return error;
|
|
|
|
error = _prop_object_internalize_from_pref(&pref, PROP_TYPE_DICTIONARY,
|
|
(prop_object_t *)dictp);
|
|
if (error != 0) {
|
|
errno = error; /* pass up error value in errno */
|
|
return error;
|
|
} else
|
|
return 0;
|
|
}
|
|
#endif /* !_KERNEL && !_STANDALONE */
|
|
|
|
#if defined(_KERNEL)
|
|
#include <sys/param.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/pool.h>
|
|
|
|
#include <uvm/uvm.h>
|
|
|
|
#include "prop_object_impl.h"
|
|
|
|
/* Arbitrary limit ioctl input to 64KB */
|
|
unsigned int prop_object_copyin_limit = 65536;
|
|
|
|
/* initialize proplib for use in the kernel */
|
|
void
|
|
prop_kern_init(void)
|
|
{
|
|
__link_set_decl(prop_linkpools, struct prop_pool_init);
|
|
struct prop_pool_init * const *pi;
|
|
|
|
__link_set_foreach(pi, prop_linkpools)
|
|
pool_init((*pi)->pp, (*pi)->size, 0, 0, 0, (*pi)->wchan,
|
|
&pool_allocator_nointr, IPL_NONE);
|
|
}
|
|
|
|
static int
|
|
_prop_object_copyin(const struct plistref *pref, const prop_type_t type,
|
|
prop_object_t *objp)
|
|
{
|
|
prop_object_t obj = NULL;
|
|
char *buf;
|
|
int error;
|
|
|
|
/*
|
|
* Allocate an extra byte so we can guarantee NUL-termination.
|
|
*
|
|
* Allow malloc to fail in case pmap would be exhausted.
|
|
*/
|
|
buf = malloc(pref->pref_len + 1, M_TEMP, M_WAITOK | M_CANFAIL);
|
|
if (buf == NULL)
|
|
return (ENOMEM);
|
|
error = copyin(pref->pref_plist, buf, pref->pref_len);
|
|
if (error) {
|
|
free(buf, M_TEMP);
|
|
return (error);
|
|
}
|
|
buf[pref->pref_len] = '\0';
|
|
|
|
switch (type) {
|
|
case PROP_TYPE_ARRAY:
|
|
obj = prop_array_internalize(buf);
|
|
break;
|
|
case PROP_TYPE_DICTIONARY:
|
|
obj = prop_dictionary_internalize(buf);
|
|
break;
|
|
default:
|
|
error = ENOTSUP;
|
|
}
|
|
|
|
free(buf, M_TEMP);
|
|
if (obj == NULL) {
|
|
if (error == 0)
|
|
error = EIO;
|
|
} else {
|
|
*objp = obj;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
|
|
static int
|
|
_prop_object_copyin_ioctl(const struct plistref *pref, const prop_type_t type,
|
|
const u_long cmd, prop_object_t *objp)
|
|
{
|
|
if ((cmd & IOC_IN) == 0)
|
|
return (EFAULT);
|
|
|
|
return _prop_object_copyin(pref, type, objp);
|
|
}
|
|
|
|
/*
|
|
* prop_array_copyin --
|
|
* Copy in an array passed as a syscall arg.
|
|
*/
|
|
int
|
|
prop_array_copyin(const struct plistref *pref, prop_array_t *arrayp)
|
|
{
|
|
return (_prop_object_copyin(pref, PROP_TYPE_ARRAY,
|
|
(prop_object_t *)arrayp));
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_copyin --
|
|
* Copy in a dictionary passed as a syscall arg.
|
|
*/
|
|
int
|
|
prop_dictionary_copyin(const struct plistref *pref, prop_dictionary_t *dictp)
|
|
{
|
|
return (_prop_object_copyin(pref, PROP_TYPE_DICTIONARY,
|
|
(prop_object_t *)dictp));
|
|
}
|
|
|
|
|
|
/*
|
|
* prop_array_copyin_ioctl --
|
|
* Copy in an array send with an ioctl.
|
|
*/
|
|
int
|
|
prop_array_copyin_ioctl(const struct plistref *pref, const u_long cmd,
|
|
prop_array_t *arrayp)
|
|
{
|
|
return (_prop_object_copyin_ioctl(pref, PROP_TYPE_ARRAY,
|
|
cmd, (prop_object_t *)arrayp));
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_copyin_ioctl --
|
|
* Copy in a dictionary sent with an ioctl.
|
|
*/
|
|
int
|
|
prop_dictionary_copyin_ioctl(const struct plistref *pref, const u_long cmd,
|
|
prop_dictionary_t *dictp)
|
|
{
|
|
return (_prop_object_copyin_ioctl(pref, PROP_TYPE_DICTIONARY,
|
|
cmd, (prop_object_t *)dictp));
|
|
}
|
|
|
|
static int
|
|
_prop_object_copyout(struct plistref *pref, prop_object_t obj)
|
|
{
|
|
struct lwp *l = curlwp; /* XXX */
|
|
struct proc *p = l->l_proc;
|
|
char *buf;
|
|
size_t len, rlen;
|
|
int error = 0;
|
|
vaddr_t uaddr;
|
|
|
|
switch (prop_object_type(obj)) {
|
|
case PROP_TYPE_ARRAY:
|
|
buf = prop_array_externalize(obj);
|
|
break;
|
|
case PROP_TYPE_DICTIONARY:
|
|
buf = prop_dictionary_externalize(obj);
|
|
break;
|
|
default:
|
|
return (ENOTSUP);
|
|
}
|
|
if (buf == NULL)
|
|
return (ENOMEM);
|
|
|
|
len = strlen(buf) + 1;
|
|
rlen = round_page(len);
|
|
|
|
/*
|
|
* See sys_mmap() in sys/uvm/uvm_mmap.c.
|
|
* Let's act as if we were calling mmap(0, ...)
|
|
*/
|
|
uaddr = p->p_emul->e_vm_default_addr(p,
|
|
(vaddr_t)p->p_vmspace->vm_daddr, rlen);
|
|
|
|
error = uvm_mmap(&p->p_vmspace->vm_map,
|
|
&uaddr, rlen,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
VM_PROT_READ|VM_PROT_WRITE,
|
|
MAP_PRIVATE|MAP_ANON,
|
|
NULL, 0,
|
|
p->p_rlimit[RLIMIT_MEMLOCK].rlim_cur);
|
|
|
|
if (error == 0) {
|
|
error = copyout(buf, (char *)uaddr, len);
|
|
if (error == 0) {
|
|
pref->pref_plist = (char *)uaddr;
|
|
pref->pref_len = len;
|
|
}
|
|
}
|
|
|
|
free(buf, M_TEMP);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* prop_array_copyout --
|
|
* Copy out an array to a syscall arg.
|
|
*/
|
|
int
|
|
prop_array_copyout(struct plistref *pref, prop_array_t array)
|
|
{
|
|
return (_prop_object_copyout(pref, array));
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_copyout --
|
|
* Copy out a dictionary to a syscall arg.
|
|
*/
|
|
int
|
|
prop_dictionary_copyout(struct plistref *pref, prop_dictionary_t dict)
|
|
{
|
|
return (_prop_object_copyout(pref, dict));
|
|
}
|
|
|
|
static int
|
|
_prop_object_copyout_ioctl(struct plistref *pref, const u_long cmd,
|
|
prop_object_t obj)
|
|
{
|
|
if ((cmd & IOC_OUT) == 0)
|
|
return (EFAULT);
|
|
return _prop_object_copyout(pref, obj);
|
|
}
|
|
|
|
|
|
/*
|
|
* prop_array_copyout_ioctl --
|
|
* Copy out an array being received with an ioctl.
|
|
*/
|
|
int
|
|
prop_array_copyout_ioctl(struct plistref *pref, const u_long cmd,
|
|
prop_array_t array)
|
|
{
|
|
return (_prop_object_copyout_ioctl(pref, cmd, array));
|
|
}
|
|
|
|
/*
|
|
* prop_dictionary_copyout_ioctl --
|
|
* Copy out a dictionary being received with an ioctl.
|
|
*/
|
|
int
|
|
prop_dictionary_copyout_ioctl(struct plistref *pref, const u_long cmd,
|
|
prop_dictionary_t dict)
|
|
{
|
|
return (
|
|
_prop_object_copyout_ioctl(pref, cmd, dict));
|
|
}
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* __NetBSD__ */
|