Merge from NetBSD rev. 1.3 (drochner): Use getifaddrs(3) instead of
SIOCGIFCONF.
This commit is contained in:
parent
72abc018fe
commit
8861f1dd53
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=126269
@ -34,7 +34,6 @@
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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@ -46,6 +45,7 @@
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <ifaddrs.h>
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#include <netsmb/netbios.h>
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#include <netsmb/smb_lib.h>
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@ -102,76 +102,45 @@ nb_resolvehost_in(const char *name, struct sockaddr **dest)
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int
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nb_enum_if(struct nb_ifdesc **iflist, int maxif)
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{
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struct ifconf ifc;
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struct ifreq *ifrqp;
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struct nb_ifdesc *ifd;
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struct in_addr iaddr, imask;
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char *ifrdata, *iname;
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int s, rdlen, ifcnt, error, iflags, i;
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size_t ifrlen;
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struct ifaddrs *ifp, *p;
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int i;
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*iflist = NULL;
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s = socket(AF_INET, SOCK_DGRAM, 0);
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if (s == -1)
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if (getifaddrs(&ifp) < 0)
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return errno;
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rdlen = maxif * sizeof(struct ifreq);
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ifrdata = malloc(rdlen);
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if (ifrdata == NULL) {
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error = ENOMEM;
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goto bad;
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}
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ifc.ifc_len = rdlen;
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ifc.ifc_buf = ifrdata;
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if (ioctl(s, SIOCGIFCONF, &ifc) != 0) {
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error = errno;
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goto bad;
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}
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ifrqp = ifc.ifc_req;
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ifcnt = ifc.ifc_len / sizeof(struct ifreq);
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error = 0;
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for (i = 0; i < ifcnt; i++) {
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ifrlen = sizeof(struct ifreq);
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if (ifrqp->ifr_addr.sa_len > sizeof(struct sockaddr))
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ifrlen += ifrqp->ifr_addr.sa_len
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- sizeof(struct sockaddr);
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*iflist = NULL;
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i = 0;
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for (p = ifp; p; p = p->ifa_next) {
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if (ifrqp->ifr_addr.sa_family != AF_INET)
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goto next;
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iname = ifrqp->ifr_name;
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if (strlen(iname) >= sizeof(ifd->id_name))
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goto next;
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if (i >= maxif)
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break;
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iaddr = (*(struct sockaddr_in *)&ifrqp->ifr_addr).sin_addr;
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if (ioctl(s, SIOCGIFNETMASK, ifrqp) != 0)
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goto next;
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imask = ((struct sockaddr_in *)&ifrqp->ifr_addr)->sin_addr;
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if (ioctl(s, SIOCGIFFLAGS, ifrqp) != 0)
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goto next;
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iflags = ifrqp->ifr_flags;
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if ((iflags & IFF_UP) == 0 || (iflags & IFF_BROADCAST) == 0)
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goto next;
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if ((p->ifa_addr->sa_family != AF_INET) ||
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((p->ifa_flags & (IFF_UP|IFF_BROADCAST))
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!= (IFF_UP|IFF_BROADCAST)))
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continue;
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if (strlen(p->ifa_name) >= sizeof(ifd->id_name))
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continue;
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ifd = malloc(sizeof(struct nb_ifdesc));
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if (ifd == NULL)
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if (ifd == NULL) {
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freeifaddrs(ifp);
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/* XXX should free stuff already in *iflist */
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return ENOMEM;
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}
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bzero(ifd, sizeof(struct nb_ifdesc));
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strcpy(ifd->id_name, iname);
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ifd->id_flags = iflags;
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ifd->id_addr = iaddr;
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ifd->id_mask = imask;
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strcpy(ifd->id_name, p->ifa_name);
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ifd->id_flags = p->ifa_flags;
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ifd->id_addr = ((struct sockaddr_in *)p->ifa_addr)->sin_addr;
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ifd->id_mask = ((struct sockaddr_in *)p->ifa_netmask)->sin_addr;
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ifd->id_next = *iflist;
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*iflist = ifd;
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next:
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ifrqp = (struct ifreq *)((caddr_t)ifrqp + ifrlen);
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i++;
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}
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bad:
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free(ifrdata);
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close(s);
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return error;
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freeifaddrs(ifp);
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return 0;
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}
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/*ARGSUSED*/
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