tnew - plan9port - [fork] Plan 9 from user space
(HTM) git clone git://src.adamsgaard.dk/plan9port
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---
(DIR) commit 9aec88f29cf8145f887f31a4bfc7299f723b72e8
(DIR) parent 9fe7e1a14c84bddc7bb0ec16ce23f44b5479ce94
(HTM) Author: rsc <devnull@localhost>
Date: Sat, 31 Dec 2005 19:33:03 +0000
new
Diffstat:
A src/libip/Darwin.c | 1 +
A src/libip/FreeBSD.c | 144 +++++++++++++++++++++++++++++++
A src/libip/Linux.c | 254 +++++++++++++++++++++++++++++++
A src/libip/NetBSD.c | 1 +
A src/libip/OpenBSD.c | 1 +
A src/libip/SunOS.c | 1 +
A src/libip/freeipifc.c | 20 ++++++++++++++++++++
M src/libip/mkfile | 4 ++--
M src/libip/myetheraddr.c | 51 +++++++++++--------------------
M src/libip/myipaddr.c | 30 +++++++++++++++++++++++++++---
A src/libip/none.c | 24 ++++++++++++++++++++++++
D src/libip/readipifc.c | 194 ------------------------------
12 files changed, 493 insertions(+), 232 deletions(-)
---
(DIR) diff --git a/src/libip/Darwin.c b/src/libip/Darwin.c
t@@ -0,0 +1 @@
+#include "none.c"
(DIR) diff --git a/src/libip/FreeBSD.c b/src/libip/FreeBSD.c
t@@ -0,0 +1,144 @@
+#include <u.h>
+/* #include <everything_but_the_kitchen_sink.h> */
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <sys/module.h>
+#include <sys/sysctl.h>
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/in_var.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <libc.h>
+#include <ip.h>
+
+static void
+sockaddr2ip(uchar *ip, struct sockaddr *sa)
+{
+ struct sockaddr_in *sin;
+
+ sin = (struct sockaddr_in*)sa;
+ memmove(ip, v4prefix, IPaddrlen);
+ memmove(ip+IPv4off, &sin->sin_addr, 4);
+}
+
+Ipifc*
+readipifc(char *net, Ipifc *ifc, int index)
+{
+ char *p, *ep, *q;
+ int i, mib[6], n, alloc;
+ Ipifc *list, **last;
+ Iplifc *lifc, **lastlifc;
+ struct if_msghdr *mh, *nmh;
+ struct ifa_msghdr *ah;
+ struct sockaddr *sa;
+ struct sockaddr_dl *sdl;
+ uchar ip[IPaddrlen];
+
+ USED(net);
+
+ free(ifc);
+ ifc = nil;
+ list = nil;
+ last = &list;
+
+ /*
+ * Does not handle IPv6 yet.
+ */
+
+ mib[0] = CTL_NET;
+ mib[1] = PF_ROUTE;
+ mib[2] = 0;
+ mib[3] = 0;
+ mib[4] = NET_RT_IFLIST;
+ mib[5] = 0;
+
+ if(sysctl(mib, 6, nil, &n, nil, 0) < 0)
+ return nil;
+ p = mallocz(n, 1);
+ if(p == nil)
+ return nil;
+ if(sysctl(mib, 6, p, &n, nil, 0) < 0){
+ free(p);
+ return nil;
+ }
+ ep = p+n;
+ while(p < ep){
+ mh = (struct if_msghdr*)p;
+ p += mh->ifm_msglen;
+ if(mh->ifm_type != RTM_IFINFO)
+ continue;
+ ifc = mallocz(sizeof *ifc, 1);
+ if(ifc == nil)
+ break;
+ *last = ifc;
+ last = &ifc->next;
+ sdl = (struct sockaddr_dl*)(mh+1);
+ n = sdl->sdl_nlen;
+ if(n >= sizeof ifc->dev)
+ n = sizeof ifc->dev - 1;
+ memmove(ifc->dev, sdl->sdl_data, n);
+ ifc->dev[n] = 0;
+ ifc->rp.linkmtu = mh->ifm_data.ifi_mtu;
+ lastlifc = &ifc->lifc;
+
+ while(p < ep){
+ ah = (struct ifa_msghdr*)p;
+ nmh = (struct if_msghdr*)p;
+ if(nmh->ifm_type != RTM_NEWADDR)
+ break;
+ p += nmh->ifm_msglen;
+ alloc = 0;
+ for(i=0, q=(char*)(ah+1); i<RTAX_MAX && q<p; i++){
+ if(!(ah->ifam_addrs & (1<<i)))
+ continue;
+ sa = (struct sockaddr*)q;
+ q += (sa->sa_len+sizeof(long)-1) & ~(sizeof(long)-1);
+
+ if(sa->sa_family == AF_LINK && i == RTAX_IFA){
+ struct sockaddr_dl *e;
+
+ if(e->sdl_type == IFT_ETHER && e->sdl_alen == 6)
+ memmove(ifc->ether, LLADDR(e), 6);
+ }
+ if(sa->sa_family != AF_INET)
+ continue;
+ if(alloc == 0){
+ alloc = 1;
+ lifc = mallocz(sizeof *lifc, 1);
+ *lastlifc = lifc;
+ lastlifc = &lifc->next;
+ }
+ sockaddr2ip(ip, sa);
+ switch(i){
+ case RTAX_IFA:
+ ipmove(lifc->ip, ip);
+ break;
+ case RTAX_NETMASK:
+ memset(ip, 0xFF, IPv4off);
+ ipmove(lifc->mask, ip);
+ break;
+ case RTAX_BRD:
+ if(mh->ifm_flags & IFF_POINTOPOINT)
+ /* ipmove(lifc->remote, ip) */ ;
+ if(mh->ifm_flags & IFF_BROADCAST)
+ /* ipmove(lifc->bcast, ip) */ ;
+ break;
+ case RTAX_GATEWAY:
+ break;
+ case RTAX_DST:
+ break;
+ }
+ }
+ maskip(lifc->ip, lifc->mask, lifc->net);
+ }
+ }
+ return list;
+}
(DIR) diff --git a/src/libip/Linux.c b/src/libip/Linux.c
t@@ -0,0 +1,254 @@
+#include <u.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <asm/types.h>
+#include <net/if_arp.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <net/if.h>
+#include <libc.h>
+#include <ip.h>
+
+/*
+ * Use netlink sockets to find interfaces.
+ * Thanks to Erik Quanstrom.
+ */
+static int
+netlinkrequest(int fd, int type, int (*fn)(struct nlmsghdr *h, Ipifc**, int),
+ Ipifc **ifc, int index)
+{
+ char buf[1024];
+ int n;
+ struct sockaddr_nl nl;
+ struct {
+ struct nlmsghdr nlh;
+ struct rtgenmsg g;
+ } req;
+ struct nlmsghdr *h;
+
+ memset(&nl, 0, sizeof nl);
+ nl.nl_family = AF_NETLINK;
+
+ memset(&req, 0, sizeof req);
+ req.nlh.nlmsg_len = sizeof req;
+ req.nlh.nlmsg_type = type;
+ req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
+ req.nlh.nlmsg_pid = 0;
+ req.nlh.nlmsg_seq = 1;
+ req.g.rtgen_family = AF_NETLINK;
+
+ if(sendto(fd, (void*)&req, sizeof req, 0, (struct sockaddr*)&nl, sizeof nl) < 0)
+ return -1;
+
+ while((n=read(fd, buf, sizeof buf)) > 0){
+ for(h=(struct nlmsghdr*)buf; NLMSG_OK(h, n); h = NLMSG_NEXT(h, n)){
+ if(h->nlmsg_type == NLMSG_DONE)
+ return 0;
+ if(h->nlmsg_type == NLMSG_ERROR){
+ werrstr("netlink error");
+ return -1;
+ }
+ if(fn(h, ifc, index) < 0)
+ return -1;
+ }
+ }
+ werrstr("netlink error");
+ return -1;
+}
+
+static int
+devsocket(void)
+{
+ /* we couldn't care less which one; just want to talk to the kernel! */
+ static int dumb[3] = { AF_INET, AF_PACKET, AF_INET6 };
+ int i, fd;
+
+ for(i=0; i<nelem(dumb); i++)
+ if((fd = socket(dumb[i], SOCK_DGRAM, 0)) >= 0)
+ return fd;
+ return -1;
+}
+
+static int
+parsertattr(struct rtattr **dst, int ndst, struct nlmsghdr *h, int type, int skip)
+{
+ struct rtattr *src;
+ int len;
+
+ len = h->nlmsg_len - NLMSG_LENGTH(skip);
+ if(len < 0 || h->nlmsg_type != type){
+ werrstr("attrs too short");
+ return -1;
+ }
+ src = (struct rtattr*)((char*)NLMSG_DATA(h) + NLMSG_ALIGN(skip));
+
+ memset(dst, 0, ndst*sizeof dst[0]);
+ for(; RTA_OK(src, len); src = RTA_NEXT(src, len))
+ if(src->rta_type < ndst)
+ dst[src->rta_type] = src;
+ return 0;
+}
+
+static void
+rta2ip(int af, uchar *ip, struct rtattr *rta)
+{
+ memset(ip, 0, IPaddrlen);
+
+ switch(af){
+ case AF_INET:
+ memmove(ip, v4prefix, IPv4off);
+ memmove(ip+IPv4off, RTA_DATA(rta), IPv4addrlen);
+ break;
+ case AF_INET6:
+ memmove(ip, RTA_DATA(rta), IPaddrlen);
+ break;
+ }
+}
+
+static int
+getlink(struct nlmsghdr *h, Ipifc **ipifclist, int index)
+{
+ char *p;
+ int fd;
+ struct rtattr *attr[IFLA_MAX+1];
+ struct ifinfomsg *ifi;
+ Ipifc *ifc;
+
+ ifi = (struct ifinfomsg*)NLMSG_DATA(h);
+ if(index >= 0 && ifi->ifi_index != index)
+ return 0;
+
+ ifc = mallocz(sizeof *ifc, 1);
+ if(ifc == nil)
+ return -1;
+ ifc->index = ifi->ifi_index;
+
+ while(*ipifclist)
+ ipifclist = &(*ipifclist)->next;
+ *ipifclist = ifc;
+
+ if(parsertattr(attr, nelem(attr), h, RTM_NEWLINK, sizeof(struct ifinfomsg)) < 0)
+ return -1;
+
+ if(attr[IFLA_IFNAME])
+ p = (char*)RTA_DATA(attr[IFLA_IFNAME]);
+ else
+ p = "nil";
+ strecpy(ifc->dev, ifc->dev+sizeof ifc->dev, p);
+
+ if(attr[IFLA_MTU])
+ ifc->mtu = *(int*)RTA_DATA(attr[IFLA_MTU]);
+
+ if(attr[IFLA_STATS]){
+ struct rtnl_link_stats *s;
+
+ s = RTA_DATA(attr[IFLA_STATS]);
+ ifc->pktin = s->rx_packets;
+ ifc->pktout = s->tx_packets;
+ ifc->errin = s->rx_errors;
+ ifc->errout = s->tx_errors;
+ }
+
+ if((fd = devsocket()) > 0){
+ struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof ifr);
+ strncpy(ifr.ifr_name, p, IFNAMSIZ);
+ ifr.ifr_mtu = 0;
+ if(ioctl(fd, SIOCGIFMTU, &ifr) >= 0)
+ ifc->rp.linkmtu = ifr.ifr_mtu;
+
+ memset(&ifr, 0, sizeof ifr);
+ strncpy(ifr.ifr_name, p, IFNAMSIZ);
+ if(ioctl(fd, SIOCGIFHWADDR, &ifr) >= 0
+ && ifr.ifr_hwaddr.sa_family == ARPHRD_ETHER)
+ memmove(ifc->ether, ifr.ifr_hwaddr.sa_data, 6);
+
+ close(fd);
+ }
+ return 0;
+}
+
+static int
+getaddr(struct nlmsghdr *h, Ipifc **ipifclist, int index)
+{
+ int mask;
+ Ipifc *ifc;
+ Iplifc *lifc, **l;
+ struct ifaddrmsg *ifa;
+ struct rtattr *attr[IFA_MAX+1];
+
+ USED(index);
+
+ ifa = (struct ifaddrmsg*)NLMSG_DATA(h);
+ for(ifc=*ipifclist; ifc; ifc=ifc->next)
+ if(ifc->index == ifa->ifa_index)
+ break;
+ if(ifc == nil)
+ return 0;
+ if(parsertattr(attr, nelem(attr), h, RTM_NEWADDR, sizeof(struct ifaddrmsg)) < 0)
+ return -1;
+
+ lifc = mallocz(sizeof *lifc, 1);
+ if(lifc == nil)
+ return -1;
+ for(l=&ifc->lifc; *l; l=&(*l)->next)
+ ;
+ *l = lifc;
+
+ if(attr[IFA_ADDRESS] == nil)
+ attr[IFA_ADDRESS] = attr[IFA_LOCAL];
+ if(attr[IFA_ADDRESS] == nil)
+ return 0;
+
+ rta2ip(ifa->ifa_family, lifc->ip, attr[IFA_ADDRESS]);
+
+ mask = ifa->ifa_prefixlen/8;
+ if(ifa->ifa_family == AF_INET)
+ mask += IPv4off;
+ memset(lifc->mask, 0xFF, mask);
+ memmove(lifc->net, lifc->ip, mask);
+
+ if(attr[IFA_CACHEINFO]){
+ struct ifa_cacheinfo *ci;
+
+ ci = RTA_DATA(attr[IFA_CACHEINFO]);
+ lifc->preflt = ci->ifa_prefered;
+ lifc->validlt = ci->ifa_valid;
+ }
+ return 0;
+}
+
+Ipifc*
+readipifc(char *net, Ipifc *ifc, int index)
+{
+ int fd;
+
+ USED(net);
+ freeipifc(ifc);
+ ifc = nil;
+
+ fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+ if(fd < 0)
+ return nil;
+ ifc = nil;
+ if(netlinkrequest(fd, RTM_GETLINK, getlink, &ifc, index) < 0
+ || netlinkrequest(fd, RTM_GETADDR, getaddr, &ifc, index) < 0){
+ close(fd);
+ freeipifc(ifc);
+ return nil;
+ }
+ close(fd);
+ return ifc;
+}
+
+int
+_myetheraddr(uchar *to, char *dev)
+{
+ int fd;
+ struct ifreq ifr;
+
+ return 0;
+}
(DIR) diff --git a/src/libip/NetBSD.c b/src/libip/NetBSD.c
t@@ -0,0 +1 @@
+#include "none.c"
(DIR) diff --git a/src/libip/OpenBSD.c b/src/libip/OpenBSD.c
t@@ -0,0 +1 @@
+#include "none.c"
(DIR) diff --git a/src/libip/SunOS.c b/src/libip/SunOS.c
t@@ -0,0 +1 @@
+#include "none.c"
(DIR) diff --git a/src/libip/freeipifc.c b/src/libip/freeipifc.c
t@@ -0,0 +1,20 @@
+#include <u.h>
+#include <libc.h>
+#include <ip.h>
+
+void
+freeipifc(Ipifc *i)
+{
+ Ipifc *next;
+ Iplifc *l, *lnext;
+
+ for(; i; i=next){
+ next = i->next;
+ for(l=i->lifc; l; l=lnext){
+ lnext = l->next;
+ free(l);
+ }
+ free(i);
+ }
+}
+
(DIR) diff --git a/src/libip/mkfile b/src/libip/mkfile
t@@ -5,14 +5,14 @@ OFILES=\
bo.$O\
classmask.$O\
eipfmt.$O\
+ freeipifc.$O\
ipaux.$O\
- myetheraddr.$O\
myipaddr.$O\
parseether.$O\
parseip.$O\
ptclbsum.$O\
- readipifc.$O\
udp.$O\
+ $SYSNAME.$O\
HFILES=\
ip.h
(DIR) diff --git a/src/libip/myetheraddr.c b/src/libip/myetheraddr.c
t@@ -2,40 +2,25 @@
#include <libc.h>
#include <ip.h>
+static char zea[6];
+
int
myetheraddr(uchar *to, char *dev)
{
- int n, fd;
- char buf[256], *ptr;
-
- /* Make one exist */
- if(*dev == '/')
- sprint(buf, "%s/clone", dev);
- else
- sprint(buf, "/net/%s/clone", dev);
- fd = open(buf, ORDWR);
- if(fd >= 0)
- close(fd);
-
- if(*dev == '/')
- sprint(buf, "%s/0/stats", dev);
- else
- sprint(buf, "/net/%s/0/stats", dev);
- fd = open(buf, OREAD);
- if(fd < 0)
- return -1;
-
- n = read(fd, buf, sizeof(buf)-1);
- close(fd);
- if(n <= 0)
- return -1;
- buf[n] = 0;
-
- ptr = strstr(buf, "addr: ");
- if(!ptr)
- return -1;
- ptr += 6;
-
- parseether(to, ptr);
- return 0;
+ Ipifc *ifclist, *ifc;
+
+ ifclist = readipifc(nil, nil, -1);
+ for(ifc=ifclist; ifc; ifc=ifc->next){
+ if(dev && strcmp(ifc->dev) != 0)
+ continue;
+ if(memcmp(zea, ifc->ether, 6) == 0)
+ continue;
+ memmove(to, ifc->ether, 6);
+ freeipifc(ifclist);
+ return 0;
+ }
+ freeipifc(ifclist);
+ werrstr("no ethernet devices");
+ return -1;
}
+
(DIR) diff --git a/src/libip/myipaddr.c b/src/libip/myipaddr.c
t@@ -2,20 +2,44 @@
#include <libc.h>
#include <ip.h>
+static uchar loopbacknet[IPaddrlen] = {
+ 0, 0, 0, 0,
+ 0, 0, 0, 0,
+ 0, 0, 0xff, 0xff,
+ 127, 0, 0, 0
+};
+static uchar loopbackmask[IPaddrlen] = {
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0, 0, 0
+};
+
+// find first ip addr that isn't the friggin loopback address
+// unless there are no others
int
myipaddr(uchar *ip, char *net)
{
Ipifc *nifc;
Iplifc *lifc;
- static Ipifc *ifc;
+ Ipifc *ifc;
+ uchar mynet[IPaddrlen];
- ifc = readipifc(net, ifc, -1);
+ ifc = readipifc(net, nil, -1);
for(nifc = ifc; nifc; nifc = nifc->next)
- for(lifc = nifc->lifc; lifc; lifc = lifc->next)
+ for(lifc = nifc->lifc; lifc; lifc = lifc->next){
+ maskip(lifc->ip, loopbackmask, mynet);
+ if(ipcmp(mynet, loopbacknet) == 0){
+ continue;
+ }
if(ipcmp(lifc->ip, IPnoaddr) != 0){
ipmove(ip, lifc->ip);
+ freeipifc(ifc);
return 0;
}
+ }
ipmove(ip, IPnoaddr);
+ freeipifc(ifc);
return -1;
}
+
(DIR) diff --git a/src/libip/none.c b/src/libip/none.c
t@@ -0,0 +1,24 @@
+#include <u.h>
+#include <libc.h>
+#include <ip.h>
+
+Ipifc*
+readipifc(char *net, Ipifc *ipifc, int index)
+{
+ USED(net);
+ USED(ipifc);
+ USED(index);
+
+ werrstr("not implemented");
+ return nil;
+}
+
+int
+myetheraddr(uchar *to, char *dev)
+{
+ USED(to);
+ USED(dev);
+
+ werrstr("not implemented");
+ return -1;
+}
(DIR) diff --git a/src/libip/readipifc.c b/src/libip/readipifc.c
t@@ -1,194 +0,0 @@
-#include <u.h>
-#include <libc.h>
-#include <ctype.h>
-#include <ip.h>
-
-static Ipifc**
-_readoldipifc(char *buf, Ipifc **l, int index)
-{
- char *f[200];
- int i, n;
- Ipifc *ifc;
- Iplifc *lifc, **ll;
-
- /* allocate new interface */
- *l = ifc = mallocz(sizeof(Ipifc), 1);
- if(ifc == nil)
- return l;
- l = &ifc->next;
- ifc->index = index;
-
- n = tokenize(buf, f, nelem(f));
- if(n < 2)
- return l;
-
- strncpy(ifc->dev, f[0], sizeof ifc->dev);
- ifc->dev[sizeof(ifc->dev) - 1] = 0;
- ifc->mtu = strtoul(f[1], nil, 10);
-
- ll = &ifc->lifc;
- for(i = 2; n-i >= 7; i += 7){
- /* allocate new local address */
- *ll = lifc = mallocz(sizeof(Iplifc), 1);
- ll = &lifc->next;
-
- parseip(lifc->ip, f[i]);
- parseipmask(lifc->mask, f[i+1]);
- parseip(lifc->net, f[i+2]);
- ifc->pktin = strtoul(f[i+3], nil, 10);
- ifc->pktout = strtoul(f[i+4], nil, 10);
- ifc->errin = strtoul(f[i+5], nil, 10);
- ifc->errout = strtoul(f[i+6], nil, 10);
- }
- return l;
-}
-
-static char*
-findfield(char *name, char **f, int n)
-{
- int i;
-
- for(i = 0; i < n-1; i++)
- if(strcmp(f[i], name) == 0)
- return f[i+1];
- return "";
-}
-
-static Ipifc**
-_readipifc(char *file, Ipifc **l, int index)
-{
- int i, n, fd, lines;
- char buf[4*1024];
- char *line[32];
- char *f[64];
- Ipifc *ifc;
- Iplifc *lifc, **ll;
-
- /* read the file */
- fd = open(file, OREAD);
- if(fd < 0)
- return l;
- n = 0;
- while((i = read(fd, buf+n, sizeof(buf)-1-n)) > 0 && n < sizeof(buf) - 1)
- n += i;
- buf[n] = 0;
- close(fd);
-
- if(strncmp(buf, "device", 6) != 0)
- return _readoldipifc(buf, l, index);
-
- /* allocate new interface */
- *l = ifc = mallocz(sizeof(Ipifc), 1);
- if(ifc == nil)
- return l;
- l = &ifc->next;
- ifc->index = index;
-
- lines = getfields(buf, line, nelem(line), 1, "\n");
-
- /* pick off device specific info(first line) */
- n = tokenize(line[0], f, nelem(f));
- strncpy(ifc->dev, findfield("device", f, n), sizeof(ifc->dev));
- ifc->dev[sizeof(ifc->dev)-1] = 0;
- if(ifc->dev[0] == 0){
- free(ifc);
- return l;
- }
- ifc->mtu = strtoul(findfield("maxmtu", f, n), nil, 10);
- ifc->sendra6 = atoi(findfield("sendra", f, n));
- ifc->recvra6 = atoi(findfield("recvra", f, n));
- ifc->rp.mflag = atoi(findfield("mflag", f, n));
- ifc->rp.oflag = atoi(findfield("oflag", f, n));
- ifc->rp.maxraint = atoi(findfield("maxraint", f, n));
- ifc->rp.minraint = atoi(findfield("minraint", f, n));
- ifc->rp.linkmtu = atoi(findfield("linkmtu", f, n));
- ifc->rp.reachtime = atoi(findfield("reachtime", f, n));
- ifc->rp.rxmitra = atoi(findfield("rxmitra", f, n));
- ifc->rp.ttl = atoi(findfield("ttl", f, n));
- ifc->rp.routerlt = atoi(findfield("routerlt", f, n));
- ifc->pktin = strtoul(findfield("pktin", f, n), nil, 10);
- ifc->pktout = strtoul(findfield("pktout", f, n), nil, 10);
- ifc->errin = strtoul(findfield("errin", f, n), nil, 10);
- ifc->errout = strtoul(findfield("errout", f, n), nil, 10);
-
- /* now read the addresses */
- ll = &ifc->lifc;
- for(i = 1; i < lines; i++){
- n = tokenize(line[i], f, nelem(f));
- if(n < 5)
- break;
-
- /* allocate new local address */
- *ll = lifc = mallocz(sizeof(Iplifc), 1);
- ll = &lifc->next;
-
- parseip(lifc->ip, f[0]);
- parseipmask(lifc->mask, f[1]);
- parseip(lifc->net, f[2]);
-
- lifc->validlt = strtoul(f[3], nil, 10);
- lifc->preflt = strtoul(f[4], nil, 10);
- }
-
- return l;
-}
-
-static void
-_freeifc(Ipifc *ifc)
-{
- Ipifc *next;
- Iplifc *lnext, *lifc;
-
- if(ifc == nil)
- return;
- for(; ifc; ifc = next){
- next = ifc->next;
- for(lifc = ifc->lifc; lifc; lifc = lnext){
- lnext = lifc->next;
- free(lifc);
- }
- free(ifc);
- }
-}
-
-Ipifc*
-readipifc(char *net, Ipifc *ifc, int index)
-{
- int fd, i, n;
- Dir *dir;
- char directory[128];
- char buf[128];
- Ipifc **l;
-
- _freeifc(ifc);
-
- l = &ifc;
- ifc = nil;
-
- if(net == 0)
- net = "/net";
- snprint(directory, sizeof(directory), "%s/ipifc", net);
-
- if(index >= 0){
- snprint(buf, sizeof(buf), "%s/%d/status", directory, index);
- _readipifc(buf, l, index);
- } else {
- fd = open(directory, OREAD);
- if(fd < 0)
- return nil;
- n = dirreadall(fd, &dir);
- close(fd);
-
- for(i = 0; i < n; i++){
- if(strcmp(dir[i].name, "clone") == 0)
- continue;
- if(strcmp(dir[i].name, "stats") == 0)
- continue;
- snprint(buf, sizeof(buf), "%s/%s/status", directory, dir[i].name);
- l = _readipifc(buf, l, atoi(dir[i].name));
- }
- free(dir);
- }
-
- return ifc;
-}