Make sure all sockets are set NONBLOCK so that writes do not block.
This commit is contained in:
parent
12114c9bae
commit
94c107d465
@ -467,7 +467,7 @@ static ssize_t rtnl_if_mtu_set(int fd, unsigned int mtu)
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int perform_ifup(void)
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{
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int fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
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int fd = socket(AF_NETLINK, SOCK_DGRAM | SOCK_NONBLOCK, NETLINK_ROUTE);
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if (fd < 0) {
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log_line("%s: (%s) netlink socket open failed: %s",
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client_config.interface, __func__, strerror(errno));
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@ -525,7 +525,7 @@ void perform_ip_subnet_bcast(const char *str_ipaddr,
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bcast.s_addr = ipaddr.s_addr | htonl(0xfffffffflu >> prefixlen);
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}
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fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
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fd = socket(AF_NETLINK, SOCK_DGRAM | SOCK_NONBLOCK, NETLINK_ROUTE);
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if (fd < 0) {
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log_error("%s: (%s) netlink socket open failed: %s",
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client_config.interface, __func__, strerror(errno));
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@ -584,7 +584,7 @@ void perform_router(const char *str_router, size_t len)
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return;
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}
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int fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
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int fd = socket(AF_NETLINK, SOCK_DGRAM | SOCK_NONBLOCK, NETLINK_ROUTE);
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if (fd < 0) {
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log_error("%s: (%s) netlink socket open failed: %s",
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client_config.interface, __func__, strerror(errno));
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@ -633,7 +633,7 @@ void perform_mtu(const char *str, size_t len)
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}
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unsigned int mtu = (unsigned int)tmtu;
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int fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
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int fd = socket(AF_NETLINK, SOCK_DGRAM | SOCK_NONBLOCK, NETLINK_ROUTE);
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if (fd < 0) {
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log_error("%s: (%s) netlink socket open failed: %s",
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client_config.interface, __func__, strerror(errno));
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12
src/nl.c
12
src/nl.c
@ -256,21 +256,11 @@ int nl_sendgetaddr6(int fd, int seq, int ifindex)
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int nl_open(int nltype, int nlgroup, int *nlportid)
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{
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int fd;
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fd = socket(AF_NETLINK, SOCK_RAW, nltype);
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fd = socket(AF_NETLINK, SOCK_RAW | SOCK_NONBLOCK | SOCK_CLOEXEC, nltype);
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if (fd < 0) {
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log_error("%s: socket failed: %s", __func__, strerror(errno));
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return -1;
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}
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if (fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK) < 0) {
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log_error("%s: Set non-blocking failed: %s",
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__func__, strerror(errno));
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goto err_close;
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}
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if (fcntl(fd, F_SETFD, FD_CLOEXEC)) {
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log_error("%s: Set close-on-exec failed: %s",
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__func__, strerror(errno));
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goto err_close;
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}
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socklen_t al;
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struct sockaddr_nl nlsock = {
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.nl_family = AF_NETLINK,
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@ -115,7 +115,7 @@ int request_sockd_fd(char *buf, size_t buflen, char *response)
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static int create_arp_socket(void)
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{
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int fd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ARP));
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int fd = socket(AF_PACKET, SOCK_RAW | SOCK_NONBLOCK, htons(ETH_P_ARP));
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if (fd < 0) {
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log_error("%s: (%s) socket failed: %s", client_config.interface,
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__func__, strerror(errno));
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@ -154,7 +154,7 @@ static int create_arp_socket(void)
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static int create_udp_socket(uint32_t ip, uint16_t port, char *iface)
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{
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int fd;
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if ((fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
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if ((fd = socket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, IPPROTO_UDP)) < 0) {
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log_error("%s: (%s) socket failed: %s",
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client_config.interface, __func__, strerror(errno));
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goto out;
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@ -211,7 +211,8 @@ static int create_raw_socket(struct sockaddr_ll *sa, bool *using_bpf,
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const struct sock_fprog *filter_prog)
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{
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int fd;
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if ((fd = socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_IP))) < 0) {
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if ((fd = socket(AF_PACKET, SOCK_DGRAM | SOCK_NONBLOCK,
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htons(ETH_P_IP))) < 0) {
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log_error("create_raw_socket: socket failed: %s", strerror(errno));
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goto out;
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}
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