diff options
| -rw-r--r-- | netlink.c | 36 |
1 files changed, 17 insertions, 19 deletions
@@ -103,9 +103,9 @@ fail: * @req: Request with netlink header * @len: Request length * - * Return: received length on success, negative error code on failure + * Return: received length on success, terminates on error */ -static int nl_req(int s, char *buf, const void *req, ssize_t len) +static ssize_t nl_req(int s, char *buf, const void *req, ssize_t len) { char flush[NLBUFSIZ]; int done = 0; @@ -124,11 +124,17 @@ static int nl_req(int s, char *buf, const void *req, ssize_t len) } } - if ((send(s, req, len, 0) < len) || - (len = recv(s, buf, NLBUFSIZ, 0)) < 0) - return -errno; + n = send(s, req, len, 0); + if (n < 0) + die("netlink: Failed to send(): %s", strerror(errno)); + else if (n < len) + die("netlink: Short send (%lu of %lu bytes)", n, len); + + n = recv(s, buf, NLBUFSIZ, 0); + if (n < 0) + die("netlink: Failed to recv(): %s", strerror(errno)); - return len; + return n; } /** @@ -158,8 +164,7 @@ unsigned int nl_get_ext_if(int s, sa_family_t af) ssize_t n; size_t na; - if ((n = nl_req(s, buf, &req, sizeof(req))) < 0) - return 0; + n = nl_req(s, buf, &req, sizeof(req)); nh = (struct nlmsghdr *)buf; @@ -218,8 +223,7 @@ void nl_route_get_def(int s, unsigned int ifi, sa_family_t af, void *gw) char buf[NLBUFSIZ]; ssize_t n; - if ((n = nl_req(s, buf, &req, req.nlh.nlmsg_len)) < 0) - return; + n = nl_req(s, buf, &req, req.nlh.nlmsg_len); for (nh = (struct nlmsghdr *)buf; NLMSG_OK(nh, n) && nh->nlmsg_type != NLMSG_DONE; @@ -357,8 +361,7 @@ void nl_route_dup(int s_src, unsigned int ifi_src, char buf[NLBUFSIZ]; unsigned i; - if ((nlmsgs_size = nl_req(s_src, buf, &req, req.nlh.nlmsg_len)) < 0) - return; + nlmsgs_size = nl_req(s_src, buf, &req, req.nlh.nlmsg_len); for (nh = (struct nlmsghdr *)buf, n = nlmsgs_size; NLMSG_OK(nh, n) && nh->nlmsg_type != NLMSG_DONE; @@ -433,8 +436,7 @@ void nl_addr_get(int s, unsigned int ifi, sa_family_t af, char buf[NLBUFSIZ]; ssize_t n; - if ((n = nl_req(s, buf, &req, req.nlh.nlmsg_len)) < 0) - return; + n = nl_req(s, buf, &req, req.nlh.nlmsg_len); for (nh = (struct nlmsghdr *)buf; NLMSG_OK(nh, n) && nh->nlmsg_type != NLMSG_DONE; @@ -570,8 +572,7 @@ void nl_addr_dup(int s_src, unsigned int ifi_src, struct nlmsghdr *nh; ssize_t n; - if ((n = nl_req(s_src, buf, &req, sizeof(req))) < 0) - return; + n = nl_req(s_src, buf, &req, sizeof(req)); for (nh = (struct nlmsghdr *)buf; NLMSG_OK(nh, n) && nh->nlmsg_type != NLMSG_DONE; @@ -631,9 +632,6 @@ void nl_link_get_mac(int s, unsigned int ifi, void *mac) ssize_t n; n = nl_req(s, buf, &req, sizeof(req)); - if (n < 0) - return; - for (nh = (struct nlmsghdr *)buf; NLMSG_OK(nh, n) && nh->nlmsg_type != NLMSG_DONE; nh = NLMSG_NEXT(nh, n)) { |