diff options
Diffstat (limited to 'netlink.c')
| -rw-r--r-- | netlink.c | 40 |
1 files changed, 28 insertions, 12 deletions
@@ -413,9 +413,11 @@ int nl_route_set_def(int s, unsigned int ifi, sa_family_t af, void *gw) * @s_dst: Netlink socket in destination namespace * @ifi_dst: Interface index in destination namespace * @af: Address family + * + * Return: 0 on success, negative error code on failure */ -void nl_route_dup(int s_src, unsigned int ifi_src, - int s_dst, unsigned int ifi_dst, sa_family_t af) +int nl_route_dup(int s_src, unsigned int ifi_src, + int s_dst, unsigned int ifi_dst, sa_family_t af) { struct req_t { struct nlmsghdr nlh; @@ -477,9 +479,11 @@ void nl_route_dup(int s_src, unsigned int ifi_src, if (extra) { err("netlink: Too many routes to duplicate"); - return; + return -E2BIG; } } + if (status < 0) + return status; /* Routes might have dependencies between each other, and the kernel * processes RTM_NEWROUTE messages sequentially. For n routes, we might @@ -493,15 +497,20 @@ void nl_route_dup(int s_src, unsigned int ifi_src, NLMSG_OK(nh, status); nh = NLMSG_NEXT(nh, status)) { uint16_t flags = nh->nlmsg_flags; + int rc; if (nh->nlmsg_type != RTM_NEWROUTE) continue; - nl_do(s_dst, nh, RTM_NEWROUTE, - (flags & ~NLM_F_DUMP_FILTERED) | NLM_F_CREATE, - nh->nlmsg_len); + rc = nl_do(s_dst, nh, RTM_NEWROUTE, + (flags & ~NLM_F_DUMP_FILTERED) | NLM_F_CREATE, + nh->nlmsg_len); + if (rc < 0 && rc != -ENETUNREACH && rc != -EEXIST) + return rc; } } + + return 0; } /** @@ -634,9 +643,11 @@ int nl_addr_set(int s, unsigned int ifi, sa_family_t af, * @s_dst: Netlink socket in destination network namespace * @ifi_dst: Interface index in destination namespace * @af: Address family + * + * Return: 0 on success, negative error code on failure */ -void nl_addr_dup(int s_src, unsigned int ifi_src, - int s_dst, unsigned int ifi_dst, sa_family_t af) +int nl_addr_dup(int s_src, unsigned int ifi_src, + int s_dst, unsigned int ifi_dst, sa_family_t af) { struct req_t { struct nlmsghdr nlh; @@ -650,6 +661,7 @@ void nl_addr_dup(int s_src, unsigned int ifi_src, struct nlmsghdr *nh; ssize_t status; uint16_t seq; + int rc = 0; seq = nl_send(s_src, &req, RTM_GETADDR, NLM_F_DUMP, sizeof(req)); nl_foreach_oftype(nh, status, s_src, buf, seq, RTM_NEWADDR) { @@ -662,7 +674,7 @@ void nl_addr_dup(int s_src, unsigned int ifi_src, ifa = (struct ifaddrmsg *)NLMSG_DATA(nh); - if (ifa->ifa_scope == RT_SCOPE_LINK || + if (rc < 0 || ifa->ifa_scope == RT_SCOPE_LINK || ifa->ifa_index != ifi_src) continue; @@ -674,10 +686,14 @@ void nl_addr_dup(int s_src, unsigned int ifi_src, rta->rta_type = IFA_UNSPEC; } - nl_do(s_dst, nh, RTM_NEWADDR, - (nh->nlmsg_flags & ~NLM_F_DUMP_FILTERED) | NLM_F_CREATE, - nh->nlmsg_len); + rc = nl_do(s_dst, nh, RTM_NEWADDR, + (nh->nlmsg_flags & ~NLM_F_DUMP_FILTERED) | NLM_F_CREATE, + nh->nlmsg_len); } + if (status < 0) + return status; + + return rc; } /** |