diff options
Diffstat (limited to 'sysdeps/gnu/ifaddrs.c')
| -rw-r--r-- | sysdeps/gnu/ifaddrs.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sysdeps/gnu/ifaddrs.c b/sysdeps/gnu/ifaddrs.c index e0a5b424f0..0c1ae5bf05 100644 --- a/sysdeps/gnu/ifaddrs.c +++ b/sysdeps/gnu/ifaddrs.c @@ -40,7 +40,7 @@ getifaddrs (struct ifaddrs **ifap) Some different mechanism entirely must be used for IPv6. */ int fd = __socket (AF_INET, SOCK_DGRAM, 0); struct ifreq *ifreqs; - int nifs, i; + int nifs; if (fd < 0) return -1; @@ -64,6 +64,8 @@ getifaddrs (struct ifaddrs **ifap) struct sockaddr addr, netmask, broadaddr; char name[IF_NAMESIZE]; } *storage; + struct ifreq *ifr; + int i; storage = malloc (nifs * sizeof storage[0]); if (storage == NULL) @@ -74,10 +76,9 @@ getifaddrs (struct ifaddrs **ifap) } i = 0; + ifr = ifreqs; do { - struct ifreq *const ifr = &ifreqs[i]; - /* Fill in all pointers to the storage we've already allocated. */ storage[i].ia.ifa_next = &storage[i + 1].ia; storage[i].ia.ifa_addr = &storage[i].addr; @@ -97,6 +98,7 @@ getifaddrs (struct ifaddrs **ifap) storage[i].ia.ifa_flags = ifr->ifr_flags; ifr->ifr_addr = storage[i].addr; + if (__ioctl (fd, SIOCGIFNETMASK, ifr) < 0) break; storage[i].netmask = ifr->ifr_netmask; @@ -121,6 +123,7 @@ getifaddrs (struct ifaddrs **ifap) storage[i].ia.ifa_data = NULL; /* Nothing here for now. */ + ifr = __if_nextreq (ifr); } while (++i < nifs); if (i < nifs) /* Broke out early on error. */ { @@ -129,6 +132,7 @@ getifaddrs (struct ifaddrs **ifap) __if_freereq (ifreqs, nifs); return -1; } + storage[i - 1].ia.ifa_next = NULL; *ifap = &storage[0].ia; |