44731cab3b
general cleanup of the API. The entire API now consists of two functions similar to the pre-KSE API. The suser() function takes a thread pointer as its only argument. The td_ucred member of this thread must be valid so the only valid thread pointers are curthread and a few kernel threads such as thread0. The suser_cred() function takes a pointer to a struct ucred as its first argument and an integer flag as its second argument. The flag is currently only used for the PRISON_ROOT flag. Discussed on: smp@
287 lines
9.0 KiB
C
287 lines
9.0 KiB
C
/* $FreeBSD$ */
|
|
/* $KAME: net_osdep.h,v 1.44 2001/05/16 03:13:40 jinmei Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
|
* 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
|
|
*/
|
|
/*
|
|
* glue for kernel code programming differences.
|
|
*/
|
|
|
|
/*
|
|
* OS dependencies:
|
|
*
|
|
* - whether the IPv4 input routine convert the byte order of some fileds
|
|
* of the IP header (x: convert to the host byte order, s: strip the header
|
|
* length for possible reassembly)
|
|
* ip_len ip_id ip_off
|
|
* bsdi3: xs x x
|
|
* bsdi4: xs x
|
|
* FreeBSD: xs x
|
|
* NetBSD: x x
|
|
* OpenBSD: xs x x
|
|
*
|
|
* - ifa_ifwithaf()
|
|
* bsdi[34], netbsd, and openbsd define it in sys/net/if.c
|
|
* freebsd (all versions) does not have it.
|
|
*
|
|
* - struct rt_addrinfo
|
|
* bsdi4, netbsd 1.5R and beyond: rti_addrs, rti_info[], rti_flags, rti_ifa,
|
|
* rti_ifp, and rti_rtm.
|
|
* others: rti_addrs and rti_info[] only.
|
|
*
|
|
* - ifa->ifa_rtrequest
|
|
* bsdi4, netbsd 1.5R and beyond: rt_addrinfo *
|
|
* others: sockaddr * (note that sys/net/route.c:rtrequest() has an unsafe
|
|
* typecast code, from 4.3BSD-reno)
|
|
*
|
|
* - side effects of rtrequest{,1}(RTM_DELETE)
|
|
* BSDI[34]: delete all cloned routes underneath the route.
|
|
* FreeBSD[234]: delete all protocol-cloned routes underneath the route.
|
|
* note that cloned routes from an interface direct route
|
|
* still remain.
|
|
* NetBSD: 1.5 have no side effects. KAME/netbsd15, and post-1.5R, have
|
|
* the same effects as of BSDI.
|
|
* OpenBSD: have no side effects. KAME/openbsd has the same effects as
|
|
* of BSDI (the change is not merged - yet).
|
|
*
|
|
* - privileged process
|
|
* NetBSD, FreeBSD 3
|
|
* struct proc *p;
|
|
* if (p && !suser(p->p_ucred, &p->p_acflag))
|
|
* privileged;
|
|
* FreeBSD 4
|
|
* struct proc *p;
|
|
* if (p && !suser(p))
|
|
* privileged;
|
|
* FreeBSD 5
|
|
* struct thread *td;
|
|
* if (suser(td))
|
|
* privileged;
|
|
* OpenBSD, BSDI [34], FreeBSD 2
|
|
* struct socket *so;
|
|
* if (so->so_state & SS_PRIV)
|
|
* privileged;
|
|
* - foo_control
|
|
* NetBSD, FreeBSD 3
|
|
* needs to give struct proc * as argument
|
|
* OpenBSD, BSDI [34], FreeBSD 2
|
|
* do not need struct proc *
|
|
*
|
|
* - bpf:
|
|
* OpenBSD, NetBSD 1.5, BSDI [34]
|
|
* need caddr_t * (= if_bpf **) and struct ifnet *
|
|
* FreeBSD 2, FreeBSD 3, NetBSD post-1.5N
|
|
* need only struct ifnet * as argument
|
|
*
|
|
* - struct ifnet
|
|
* use queue.h? member names if name
|
|
* --- --- ---
|
|
* FreeBSD 2 no old standard if_name+unit
|
|
* FreeBSD 3 yes strange if_name+unit
|
|
* OpenBSD yes standard if_xname
|
|
* NetBSD yes standard if_xname
|
|
* BSDI [34] no old standard if_name+unit
|
|
*
|
|
* - usrreq
|
|
* NetBSD, OpenBSD, BSDI [34], FreeBSD 2
|
|
* single function with PRU_xx, arguments are mbuf
|
|
* FreeBSD 3
|
|
* separates functions, non-mbuf arguments
|
|
*
|
|
* - {set,get}sockopt
|
|
* NetBSD, OpenBSD, BSDI [34], FreeBSD 2
|
|
* manipulation based on mbuf
|
|
* FreeBSD 3
|
|
* non-mbuf manipulation using sooptcopy{in,out}()
|
|
*
|
|
* - timeout() and untimeout()
|
|
* NetBSD 1.4.x, OpenBSD, BSDI [34], FreeBSD 2
|
|
* timeout() is a void function
|
|
* FreeBSD 3
|
|
* timeout() is non-void, must keep returned value for untimeout()
|
|
* callout_xx is also available (sys/callout.h)
|
|
* NetBSD 1.5
|
|
* timeout() is obsoleted, use callout_xx (sys/callout.h)
|
|
* OpenBSD 2.8
|
|
* timeout_{add,set,del} is encouraged (sys/timeout.h)
|
|
*
|
|
* - sysctl
|
|
* NetBSD, OpenBSD
|
|
* foo_sysctl()
|
|
* BSDI [34]
|
|
* foo_sysctl() but with different style. sysctl_int_arr() takes
|
|
* care of most of the cases.
|
|
* FreeBSD
|
|
* linker hack. however, there are freebsd version differences
|
|
* (how wonderful!).
|
|
* on FreeBSD[23] function arg #define includes paren.
|
|
* int foo SYSCTL_HANDLER_ARGS;
|
|
* on FreeBSD4, function arg #define does not include paren.
|
|
* int foo(SYSCTL_HANDLER_ARGS);
|
|
* on some versions, forward reference to the tree is okay.
|
|
* on some versions, you need SYSCTL_DECL(). you need things
|
|
* like this.
|
|
* #ifdef SYSCTL_DECL
|
|
* SYSCTL_DECL(net_inet_ip6);
|
|
* #endif
|
|
* it is hard to share functions between freebsd and non-freebsd.
|
|
*
|
|
* - if_ioctl
|
|
* NetBSD, FreeBSD 3, BSDI [34]
|
|
* 2nd argument is u_long cmd
|
|
* FreeBSD 2
|
|
* 2nd argument is int cmd
|
|
*
|
|
* - if attach routines
|
|
* NetBSD
|
|
* void xxattach(int);
|
|
* FreeBSD 2, FreeBSD 3
|
|
* void xxattach(void *);
|
|
* PSEUDO_SET(xxattach, if_xx);
|
|
*
|
|
* - ovbcopy()
|
|
* in NetBSD 1.4 or later, ovbcopy() is not supplied in the kernel.
|
|
* bcopy() is safe against overwrites.
|
|
*
|
|
* - splnet()
|
|
* NetBSD 1.4 or later requires splsoftnet().
|
|
* other operating systems use splnet().
|
|
*
|
|
* - dtom()
|
|
* NEVER USE IT!
|
|
*
|
|
* - struct ifnet for loopback interface
|
|
* BSDI3: struct ifnet loif;
|
|
* BSDI4: struct ifnet *loifp;
|
|
* NetBSD, OpenBSD 2.8, FreeBSD2: struct ifnet loif[NLOOP];
|
|
* OpenBSD 2.9: struct ifnet *lo0ifp;
|
|
*
|
|
* odd thing is that many of them refers loif as ifnet *loif,
|
|
* not loif[NLOOP], from outside of if_loop.c.
|
|
*
|
|
* - number of bpf pseudo devices
|
|
* others: bpfilter.h, NBPFILTER
|
|
* FreeBSD4: bpf.h, NBPF
|
|
* solution:
|
|
* #if defined(__FreeBSD__) && __FreeBSD__ >= 4
|
|
* #include "bpf.h"
|
|
* #define NBPFILTER NBPF
|
|
* #else
|
|
* #include "bpfilter.h"
|
|
* #endif
|
|
*
|
|
* - protosw for IPv4 (sys/netinet)
|
|
* FreeBSD4: struct ipprotosw in netinet/ipprotosw.h
|
|
* others: struct protosw in sys/protosw.h
|
|
*
|
|
* - protosw in general.
|
|
* NetBSD 1.5 has extra member for ipfilter (netbsd-current dropped
|
|
* it so it will go away in 1.6).
|
|
* NetBSD 1.5 requires PR_LISTEN flag bit with protocols that permit
|
|
* listen/accept (like tcp).
|
|
*
|
|
* - header files with defopt (opt_xx.h)
|
|
* FreeBSD3: opt_{inet,ipsec,ip6fw,altq}.h
|
|
* FreeBSD4: opt_{inet,inet6,ipsec,ip6fw,altq}.h
|
|
* NetBSD: opt_{inet,ipsec,altq}.h
|
|
* others: does not use defopt
|
|
*
|
|
* - IN_MULTICAST/IN_CLASS[A-D] macro.
|
|
* OpenBSD and NetBSD: net endian (kernel) or host endian (userland)
|
|
* others: always host endian
|
|
*
|
|
* - (m->m_flags & M_EXT) != 0 does *not* mean that the max data length of
|
|
* the mbuf == MCLBYTES.
|
|
*
|
|
* - sys/kern/uipc_mbuf.c:m_dup()
|
|
* freebsd[34]: copies the whole mbuf chain.
|
|
* netbsd: similar arg with m_copym().
|
|
* others: no m_dup().
|
|
*
|
|
* - ifa_refcnt (struct ifaddr) management (IFAREF/IFAFREE).
|
|
* NetBSD 1.5: always use IFAREF whenever reference gets added.
|
|
* always use IFAFREE whenever reference gets freed.
|
|
* IFAFREE frees ifaddr when ifa_refcnt reaches 0.
|
|
* others: do not increase refcnt for ifp->if_addrlist and in_ifaddr.
|
|
* use IFAFREE once when ifaddr is disconnected from
|
|
* ifp->if_addrlist and in_ifaddr. IFAFREE frees ifaddr when
|
|
* ifa_refcnt goes negative.
|
|
*/
|
|
|
|
#ifndef __NET_NET_OSDEP_H_DEFINED_
|
|
#define __NET_NET_OSDEP_H_DEFINED_
|
|
#ifdef _KERNEL
|
|
|
|
struct ifnet;
|
|
extern const char *if_name(struct ifnet *);
|
|
|
|
#define HAVE_OLD_BPF
|
|
|
|
#define ifa_list ifa_link
|
|
#define if_addrlist if_addrhead
|
|
#define if_list if_link
|
|
|
|
/* sys/net/if.h */
|
|
#define IFAREF(ifa) do { ++(ifa)->ifa_refcnt; } while (0)
|
|
|
|
#define WITH_CONVERT_AND_STRIP_IP_LEN
|
|
|
|
#if 1 /* at this moment, all OSes do this */
|
|
#define WITH_CONVERT_IP_OFF
|
|
#endif
|
|
|
|
/*
|
|
* Deprecated.
|
|
*/
|
|
#include <sys/module.h>
|
|
#define PSEUDO_SET(sym, name) \
|
|
static int name ## _modevent(module_t mod, int type, void *data) \
|
|
{ \
|
|
void (*initfunc)(void *) = (void (*)(void *))data; \
|
|
switch (type) { \
|
|
case MOD_LOAD: \
|
|
/* printf(#name " module load\n"); */ \
|
|
initfunc(NULL); \
|
|
break; \
|
|
case MOD_UNLOAD: \
|
|
printf(#name " module unload - not possible for this module type\n"); \
|
|
return EINVAL; \
|
|
} \
|
|
return 0; \
|
|
} \
|
|
static moduledata_t name ## _mod = { \
|
|
#name, \
|
|
name ## _modevent, \
|
|
(void *)sym \
|
|
}; \
|
|
DECLARE_MODULE(name, name ## _mod, SI_SUB_PSEUDO, SI_ORDER_ANY)
|
|
|
|
#endif /*_KERNEL*/
|
|
#endif /*__NET_NET_OSDEP_H_DEFINED_ */
|