#include #include #include #include #include #include #include #include "dev.h" #include "str.h" #include "sock.h" #include "die.h" #include "link.h" #include "built_in.h" int device_ifindex(const char *ifname) { int ret, sock, index; struct ifreq ifr; if (!strncmp("any", ifname, strlen("any"))) return 0; sock = af_socket(AF_INET); memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); ret = ioctl(sock, SIOCGIFINDEX, &ifr); if (unlikely(ret)) panic("Cannot get ifindex from device!\n"); index = ifr.ifr_ifindex; close(sock); return index; } int device_type(const char *ifname) { int ret, sock, type; struct ifreq ifr; if (!strncmp("any", ifname, strlen("any"))) return ARPHRD_ETHER; sock = af_socket(AF_INET); memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); ret = ioctl(sock, SIOCGIFHWADDR, &ifr); if (unlikely(ret)) panic("Cannot get iftype from device!\n"); /* dev->type */ type = ifr.ifr_hwaddr.sa_family; close(sock); return type; } static int __device_address6(const char *ifname, struct sockaddr_storage *ss) { int ret, family, found = -EINVAL; struct ifaddrs *ifaddr, *ifa; ret = getifaddrs(&ifaddr); if (unlikely(ret < 0)) panic("Cannot get device addresses for IPv6!\n"); for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { family = ifa->ifa_addr->sa_family; if (family != AF_INET6) continue; if (strcmp(ifa->ifa_name, ifname)) continue; memcpy(ss, ifa->ifa_addr, sizeof(*ss)); found = 0; break; } freeifaddrs(ifaddr); return found; } int device_address(const char *ifname, int af, struct sockaddr_storage *ss) { int ret, sock; struct ifreq ifr; if (unlikely(!ss)) return -EINVAL; if (!strncmp("any", ifname, strlen("any"))) return -EINVAL; if (af == AF_INET6) return __device_address6(ifname, ss); sock = af_socket(af); memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); ifr.ifr_addr.sa_family = af; ret = ioctl(sock, SIOCGIFADDR, &ifr); if (likely(!ret)) memcpy(ss, &ifr.ifr_addr, sizeof(ifr.ifr_addr)); close(sock); return ret; } int device_mtu(const char *ifname) { int ret, sock, mtu = 0; struct ifreq ifr; sock = af_socket(AF_INET); memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); ret = ioctl(sock, SIOCGIFMTU, &ifr); if (likely(!ret)) mtu = ifr.ifr_mtu; close(sock); return mtu; } short device_get_flags(const char *ifname) { short flags = 0; int ret, sock; struct ifreq ifr; sock = af_socket(AF_INET); memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); ret = ioctl(sock, SIOCGIFFLAGS, &ifr); if (likely(!ret)) flags = ifr.ifr_flags; close(sock); return flags; } void device_set_flags(const char *ifname, const short flags) { int ret, sock; struct ifreq ifr; sock = af_socket(AF_INET); memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); ifr.ifr_flags = flags; ret = ioctl(sock, SIOCSIFFLAGS, &ifr); if (unlikely(ret < 0)) panic("Cannot set NIC flags!\n"); close(sock); } int device_up_and_running(char *ifname) { if (!ifname) return -EINVAL; if (!strncmp("any", ifname, strlen("any"))) return 1; return (device_get_flags(ifname) & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING); } u32 device_bitrate(const char *ifname) { u32 scopper, swireless; scopper = ethtool_bitrate(ifname); swireless = wireless_bitrate(ifname); return scopper ? : swireless; } ='hidden' name='id' value='cdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4'/>
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authorDan Carpenter <dan.carpenter@oracle.com>2017-01-30 10:55:04 +0100
committerDavid S. Miller <davem@davemloft.net>2017-01-30 16:37:55 -0500
commitcdaf25dfc058ee6f7a7b2e2353de00fa288c0cd4 (patch)
treea45096fd9e8aaeea2eac1f1999a3d17dfeb0d02b /include/uapi/xen
parent1930b60352e7e195f55b27cde15d2a8f43342a8b (diff)
smc: some potential use after free bugs
Say we got really unlucky and these failed on the last iteration, then it could lead to a use after free bug. Fixes: cd6851f30386 ("smc: remote memory buffers (RMBs)") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/xen')