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Diffstat (limited to 'freebsd/lib/libc/net/getifaddrs.c')
-rw-r--r--freebsd/lib/libc/net/getifaddrs.c172
1 files changed, 49 insertions, 123 deletions
diff --git a/freebsd/lib/libc/net/getifaddrs.c b/freebsd/lib/libc/net/getifaddrs.c
index 17ef0198..ee5ecd76 100644
--- a/freebsd/lib/libc/net/getifaddrs.c
+++ b/freebsd/lib/libc/net/getifaddrs.c
@@ -74,19 +74,6 @@ __FBSDID("$FreeBSD$");
#define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES)
#endif
-#if _BSDI_VERSION >= 199701
-#define HAVE_IFM_DATA
-#endif
-
-#if _BSDI_VERSION >= 199802
-/* ifam_data is very specific to recent versions of bsdi */
-#define HAVE_IFAM_DATA
-#endif
-
-#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__)
-#define HAVE_IFM_DATA
-#endif
-
#define MAX_SYSCTL_TRY 5
int
@@ -95,39 +82,31 @@ getifaddrs(struct ifaddrs **pif)
int icnt = 1;
int dcnt = 0;
int ncnt = 0;
-#ifdef NET_RT_IFLIST
int ntry = 0;
int mib[6];
size_t needed;
char *buf;
char *next;
- struct ifaddrs *cif = 0;
+ struct ifaddrs *cif;
char *p, *p0;
struct rt_msghdr *rtm;
- struct if_msghdr *ifm;
- struct ifa_msghdr *ifam;
+ struct if_msghdrl *ifm;
+ struct ifa_msghdrl *ifam;
struct sockaddr_dl *dl;
struct sockaddr *sa;
struct ifaddrs *ifa, *ift;
+ struct if_data *if_data;
u_short idx = 0;
-#else /* NET_RT_IFLIST */
- char buf[1024];
- int m, sock;
- struct ifconf ifc;
- struct ifreq *ifr;
- struct ifreq *lifr;
-#endif /* NET_RT_IFLIST */
int i;
size_t len, alen;
char *data;
char *names;
-#ifdef NET_RT_IFLIST
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0; /* protocol */
mib[3] = 0; /* wildcard address family */
- mib[4] = NET_RT_IFLIST;
+ mib[4] = NET_RT_IFLISTL;/* extra fields for extensible msghdr structs */
mib[5] = 0; /* no flags */
do {
/*
@@ -161,34 +140,33 @@ getifaddrs(struct ifaddrs **pif)
continue;
switch (rtm->rtm_type) {
case RTM_IFINFO:
- ifm = (struct if_msghdr *)(void *)rtm;
+ ifm = (struct if_msghdrl *)(void *)rtm;
if (ifm->ifm_addrs & RTA_IFP) {
idx = ifm->ifm_index;
++icnt;
- dl = (struct sockaddr_dl *)(void *)(ifm + 1);
+ if_data = IF_MSGHDRL_IFM_DATA(ifm);
+ dcnt += if_data->ifi_datalen;
+ dl = (struct sockaddr_dl *)IF_MSGHDRL_RTA(ifm);
dcnt += SA_RLEN((struct sockaddr *)(void*)dl) +
ALIGNBYTES;
-#ifdef HAVE_IFM_DATA
- dcnt += sizeof(ifm->ifm_data);
-#endif /* HAVE_IFM_DATA */
ncnt += dl->sdl_nlen + 1;
} else
idx = 0;
break;
case RTM_NEWADDR:
- ifam = (struct ifa_msghdr *)(void *)rtm;
+ ifam = (struct ifa_msghdrl *)(void *)rtm;
if (idx && ifam->ifam_index != idx)
abort(); /* this cannot happen */
#define RTA_MASKS (RTA_NETMASK | RTA_IFA | RTA_BRD)
if (idx == 0 || (ifam->ifam_addrs & RTA_MASKS) == 0)
break;
- p = (char *)(void *)(ifam + 1);
+ p = (char *)IFA_MSGHDRL_RTA(ifam);
++icnt;
-#ifdef HAVE_IFAM_DATA
- dcnt += sizeof(ifam->ifam_data) + ALIGNBYTES;
-#endif /* HAVE_IFAM_DATA */
+ if_data = IFA_MSGHDRL_IFAM_DATA(ifam);
+ dcnt += if_data->ifi_datalen + ALIGNBYTES;
+
/* Scan to look for length of address */
alen = 0;
for (p0 = p, i = 0; i < RTAX_MAX; i++) {
@@ -218,34 +196,6 @@ getifaddrs(struct ifaddrs **pif)
break;
}
}
-#else /* NET_RT_IFLIST */
- ifc.ifc_buf = buf;
- ifc.ifc_len = sizeof(buf);
-
- if ((sock = _socket(AF_INET, SOCK_STREAM, 0)) < 0)
- return (-1);
- i = _ioctl(sock, SIOCGIFCONF, (char *)&ifc);
- _close(sock);
- if (i < 0)
- return (-1);
-
- ifr = ifc.ifc_req;
- lifr = (struct ifreq *)&ifc.ifc_buf[ifc.ifc_len];
-
- while (ifr < lifr) {
- struct sockaddr *sa;
-
- sa = &ifr->ifr_addr;
- ++icnt;
- dcnt += SA_RLEN(sa);
- ncnt += sizeof(ifr->ifr_name) + 1;
-
- if (SA_LEN(sa) < sizeof(*sa))
- ifr = (struct ifreq *)(((char *)sa) + sizeof(*sa));
- else
- ifr = (struct ifreq *)(((char *)sa) + SA_LEN(sa));
- }
-#endif /* NET_RT_IFLIST */
if (icnt + dcnt + ncnt == 1) {
*pif = NULL;
@@ -265,49 +215,46 @@ getifaddrs(struct ifaddrs **pif)
memset(ifa, 0, sizeof(struct ifaddrs) * icnt);
ift = ifa;
-#ifdef NET_RT_IFLIST
idx = 0;
+ cif = NULL;
for (next = buf; next < buf + needed; next += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)(void *)next;
if (rtm->rtm_version != RTM_VERSION)
continue;
switch (rtm->rtm_type) {
case RTM_IFINFO:
- ifm = (struct if_msghdr *)(void *)rtm;
- if (ifm->ifm_addrs & RTA_IFP) {
- idx = ifm->ifm_index;
- dl = (struct sockaddr_dl *)(void *)(ifm + 1);
-
- cif = ift;
- ift->ifa_name = names;
- ift->ifa_flags = (int)ifm->ifm_flags;
- memcpy(names, dl->sdl_data,
- (size_t)dl->sdl_nlen);
- names[dl->sdl_nlen] = 0;
- names += dl->sdl_nlen + 1;
-
- ift->ifa_addr = (struct sockaddr *)(void *)data;
- memcpy(data, dl,
- (size_t)SA_LEN((struct sockaddr *)
- (void *)dl));
- data += SA_RLEN((struct sockaddr *)(void *)dl);
-
-#ifdef HAVE_IFM_DATA
- /* ifm_data needs to be aligned */
- ift->ifa_data = data = (void *)ALIGN(data);
- memcpy(data, &ifm->ifm_data, sizeof(ifm->ifm_data));
- data += sizeof(ifm->ifm_data);
-#else /* HAVE_IFM_DATA */
- ift->ifa_data = NULL;
-#endif /* HAVE_IFM_DATA */
-
- ift = (ift->ifa_next = ift + 1);
- } else
+ ifm = (struct if_msghdrl *)(void *)rtm;
+ if ((ifm->ifm_addrs & RTA_IFP) == 0) {
idx = 0;
+ break;
+ }
+
+ idx = ifm->ifm_index;
+ dl = (struct sockaddr_dl *)IF_MSGHDRL_RTA(ifm);
+
+ cif = ift;
+ ift->ifa_name = names;
+ ift->ifa_flags = (int)ifm->ifm_flags;
+ memcpy(names, dl->sdl_data, (size_t)dl->sdl_nlen);
+ names[dl->sdl_nlen] = 0;
+ names += dl->sdl_nlen + 1;
+
+ ift->ifa_addr = (struct sockaddr *)(void *)data;
+ memcpy(data, dl, (size_t)SA_LEN((struct sockaddr *)
+ (void *)dl));
+ data += SA_RLEN((struct sockaddr *)(void *)dl);
+
+ if_data = IF_MSGHDRL_IFM_DATA(ifm);
+ /* ifm_data needs to be aligned */
+ ift->ifa_data = data = (void *)ALIGN(data);
+ memcpy(data, if_data, if_data->ifi_datalen);
+ data += if_data->ifi_datalen;
+
+ ift = (ift->ifa_next = ift + 1);
break;
case RTM_NEWADDR:
- ifam = (struct ifa_msghdr *)(void *)rtm;
+ ifam = (struct ifa_msghdrl *)(void *)rtm;
if (idx && ifam->ifam_index != idx)
abort(); /* this cannot happen */
@@ -316,7 +263,8 @@ getifaddrs(struct ifaddrs **pif)
ift->ifa_name = cif->ifa_name;
ift->ifa_flags = cif->ifa_flags;
ift->ifa_data = NULL;
- p = (char *)(void *)(ifam + 1);
+
+ p = (char *)IFA_MSGHDRL_RTA(ifam);
/* Scan to look for length of address */
alen = 0;
for (p0 = p, i = 0; i < RTAX_MAX; i++) {
@@ -367,12 +315,11 @@ getifaddrs(struct ifaddrs **pif)
p += len;
}
-#ifdef HAVE_IFAM_DATA
+ if_data = IFA_MSGHDRL_IFAM_DATA(ifam);
/* ifam_data needs to be aligned */
ift->ifa_data = data = (void *)ALIGN(data);
- memcpy(data, &ifam->ifam_data, sizeof(ifam->ifam_data));
- data += sizeof(ifam->ifam_data);
-#endif /* HAVE_IFAM_DATA */
+ memcpy(data, if_data, if_data->ifi_datalen);
+ data += if_data->ifi_datalen;
ift = (ift->ifa_next = ift + 1);
break;
@@ -380,28 +327,7 @@ getifaddrs(struct ifaddrs **pif)
}
free(buf);
-#else /* NET_RT_IFLIST */
- ifr = ifc.ifc_req;
- lifr = (struct ifreq *)&ifc.ifc_buf[ifc.ifc_len];
-
- while (ifr < lifr) {
- struct sockaddr *sa;
-
- ift->ifa_name = names;
- names[sizeof(ifr->ifr_name)] = 0;
- strncpy(names, ifr->ifr_name, sizeof(ifr->ifr_name));
- while (*names++)
- ;
-
- ift->ifa_addr = (struct sockaddr *)data;
- sa = &ifr->ifr_addr;
- memcpy(data, sa, SA_LEN(sa));
- data += SA_RLEN(sa);
-
- ifr = (struct ifreq *)(((char *)sa) + SA_LEN(sa));
- ift = (ift->ifa_next = ift + 1);
- }
-#endif /* NET_RT_IFLIST */
+
if (--ift >= ifa) {
ift->ifa_next = NULL;
*pif = ifa;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 20:56:38 +0000