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Provide 32bit compat shims for sysctl net.route NET_RT_IFLIST.

Browse Source 
This allows getifaddrs(3) to work for compat32 binaries.

Submitted by:	jhb (6.x version)
Reviewed by:	emaste
Tested by:	emaste and <pluknet gmail com>
MFC after:	2 weeks
This commit is contained in:
Konstantin Belousov 2010-04-25 16:42:47 +00:00
parent 475d0674a6
commit 427a928af7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=207194
1 changed files with 101 additions and 1 deletions
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102
sys/net/rtsock.c
View File

@ -29,6 +29,7 @@
* @(#)rtsock.c 8.7 (Berkeley) 10/12/95
* $FreeBSD$
*/
#include "opt_compat.h"
#include "opt_sctp.h"
#include "opt_mpath.h"
#include "opt_inet.h"
@ -71,6 +72,49 @@ extern void sctp_addr_change(struct ifaddr *ifa, int cmd);
#endif /* SCTP */
#endif
#ifdef COMPAT_FREEBSD32
#include <sys/mount.h>
#include <compat/freebsd32/freebsd32.h>
struct if_data32 {
uint8_t ifi_type;
uint8_t ifi_physical;
uint8_t ifi_addrlen;
uint8_t ifi_hdrlen;
uint8_t ifi_link_state;
uint8_t ifi_spare_char1;
uint8_t ifi_spare_char2;
uint8_t ifi_datalen;
uint32_t ifi_mtu;
uint32_t ifi_metric;
uint32_t ifi_baudrate;
uint32_t ifi_ipackets;
uint32_t ifi_ierrors;
uint32_t ifi_opackets;
uint32_t ifi_oerrors;
uint32_t ifi_collisions;
uint32_t ifi_ibytes;
uint32_t ifi_obytes;
uint32_t ifi_imcasts;
uint32_t ifi_omcasts;
uint32_t ifi_iqdrops;
uint32_t ifi_noproto;
uint32_t ifi_hwassist;
int32_t ifi_epoch;
struct timeval32 ifi_lastchange;
};
struct if_msghdr32 {
uint16_t ifm_msglen;
uint8_t ifm_version;
uint8_t ifm_type;
int32_t ifm_addrs;
int32_t ifm_flags;
uint16_t ifm_index;
struct if_data32 ifm_data;
};
#endif
MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
/* NB: these are not modified */
@ -1001,6 +1045,12 @@ rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w)
break;
case RTM_IFINFO:
#ifdef COMPAT_FREEBSD32
if (w != NULL && w->w_req->flags & SCTL_MASK32) {
len = sizeof(struct if_msghdr32);
break;
}
#endif
len = sizeof(struct if_msghdr);
break;
@ -1367,6 +1417,38 @@ sysctl_dumpentry(struct radix_node *rn, void *vw)
return (error);
}
#ifdef COMPAT_FREEBSD32
static void
copy_ifdata32(struct if_data *src, struct if_data32 *dst)
{
bzero(dst, sizeof(*dst));
CP(*src, *dst, ifi_type);
CP(*src, *dst, ifi_physical);
CP(*src, *dst, ifi_addrlen);
CP(*src, *dst, ifi_hdrlen);
CP(*src, *dst, ifi_link_state);
CP(*src, *dst, ifi_datalen);
CP(*src, *dst, ifi_mtu);
CP(*src, *dst, ifi_metric);
CP(*src, *dst, ifi_baudrate);
CP(*src, *dst, ifi_ipackets);
CP(*src, *dst, ifi_ierrors);
CP(*src, *dst, ifi_opackets);
CP(*src, *dst, ifi_oerrors);
CP(*src, *dst, ifi_collisions);
CP(*src, *dst, ifi_ibytes);
CP(*src, *dst, ifi_obytes);
CP(*src, *dst, ifi_imcasts);
CP(*src, *dst, ifi_omcasts);
CP(*src, *dst, ifi_iqdrops);
CP(*src, *dst, ifi_noproto);
CP(*src, *dst, ifi_hwassist);
CP(*src, *dst, ifi_epoch);
TV_CP(*src, *dst, ifi_lastchange);
}
#endif
static int
sysctl_iflist(int af, struct walkarg *w)
{
@ -1387,12 +1469,30 @@ sysctl_iflist(int af, struct walkarg *w)
if (w->w_req && w->w_tmem) {
struct if_msghdr *ifm;
#ifdef COMPAT_FREEBSD32
if (w->w_req->flags & SCTL_MASK32) {
struct if_msghdr32 *ifm32;
ifm32 = (struct if_msghdr32 *)w->w_tmem;
ifm32->ifm_index = ifp->if_index;
ifm32->ifm_flags = ifp->if_flags |
ifp->if_drv_flags;
copy_ifdata32(&ifp->if_data, &ifm32->ifm_data);
ifm32->ifm_addrs = info.rti_addrs;
error = SYSCTL_OUT(w->w_req, (caddr_t)ifm32,
len);
goto sysctl_out;
}
#endif
ifm = (struct if_msghdr *)w->w_tmem;
ifm->ifm_index = ifp->if_index;
ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags;
ifm->ifm_data = ifp->if_data;
ifm->ifm_addrs = info.rti_addrs;
error = SYSCTL_OUT(w->w_req,(caddr_t)ifm, len);
error = SYSCTL_OUT(w->w_req, (caddr_t)ifm, len);
#ifdef COMPAT_FREEBSD32
sysctl_out:
#endif
if (error)
goto done;
}