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path: root/src/libsystemd-rtnl/rtnl-message.c
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Diffstat (limited to 'src/libsystemd-rtnl/rtnl-message.c')
-rw-r--r--src/libsystemd-rtnl/rtnl-message.c86
1 files changed, 60 insertions, 26 deletions
diff --git a/src/libsystemd-rtnl/rtnl-message.c b/src/libsystemd-rtnl/rtnl-message.c
index 65cc5010f4..870fdcdf2e 100644
--- a/src/libsystemd-rtnl/rtnl-message.c
+++ b/src/libsystemd-rtnl/rtnl-message.c
@@ -91,6 +91,40 @@ int message_new_synthetic_error(int error, uint32_t serial, sd_rtnl_message **re
return 0;
}
+bool message_type_is_route(uint16_t type) {
+ switch (type) {
+ case RTM_NEWROUTE:
+ case RTM_GETROUTE:
+ case RTM_DELROUTE:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool message_type_is_link(uint16_t type) {
+ switch (type) {
+ case RTM_NEWLINK:
+ case RTM_SETLINK:
+ case RTM_GETLINK:
+ case RTM_DELLINK:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool message_type_is_addr(uint16_t type) {
+ switch (type) {
+ case RTM_NEWADDR:
+ case RTM_GETADDR:
+ case RTM_DELADDR:
+ return true;
+ default:
+ return false;
+ }
+}
+
int sd_rtnl_message_route_new(uint16_t nlmsg_type, unsigned char rtm_family,
unsigned char rtm_dst_len, unsigned char rtm_src_len,
unsigned char rtm_tos, unsigned char rtm_table,
@@ -99,8 +133,7 @@ int sd_rtnl_message_route_new(uint16_t nlmsg_type, unsigned char rtm_family,
struct rtmsg *rtm;
int r;
- assert_return(nlmsg_type == RTM_NEWROUTE || nlmsg_type == RTM_DELROUTE ||
- nlmsg_type == RTM_GETROUTE, -EINVAL);
+ assert_return(message_type_is_route(nlmsg_type), -EINVAL);
assert_return(ret, -EINVAL);
r = message_new(ret, NLMSG_SPACE(sizeof(struct rtmsg)));
@@ -131,8 +164,7 @@ int sd_rtnl_message_link_new(uint16_t nlmsg_type, int index, unsigned type, unsi
struct ifinfomsg *ifi;
int r;
- assert_return(nlmsg_type == RTM_NEWLINK || nlmsg_type == RTM_DELLINK ||
- nlmsg_type == RTM_SETLINK || nlmsg_type == RTM_GETLINK, -EINVAL);
+ assert_return(message_type_is_link(nlmsg_type), -EINVAL);
assert_return(nlmsg_type == RTM_NEWLINK || index > 0, -EINVAL);
assert_return(ret, -EINVAL);
@@ -160,7 +192,7 @@ int sd_rtnl_message_addr_new(uint16_t nlmsg_type, int index, unsigned char famil
struct ifaddrmsg *ifa;
int r;
- assert_return(nlmsg_type == RTM_NEWADDR || nlmsg_type == RTM_DELADDR || nlmsg_type == RTM_GETADDR, -EINVAL);
+ assert_return(message_type_is_addr(nlmsg_type), -EINVAL);
assert_return(index > 0, -EINVAL);
assert_return(ret, -EINVAL);
@@ -211,9 +243,9 @@ int sd_rtnl_message_link_get_ifindex(sd_rtnl_message *m, int *ifindex) {
struct ifinfomsg *ifi;
assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
assert_return(ifindex, -EINVAL);
- assert_return(m->hdr->nlmsg_type == RTM_NEWLINK || m->hdr->nlmsg_type == RTM_DELLINK ||
- m->hdr->nlmsg_type == RTM_GETLINK || m->hdr->nlmsg_type == RTM_SETLINK, -EINVAL);
ifi = NLMSG_DATA(m->hdr);
@@ -226,9 +258,9 @@ int sd_rtnl_message_link_get_flags(sd_rtnl_message *m, unsigned *flags) {
struct ifinfomsg *ifi;
assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
assert_return(flags, -EINVAL);
- assert_return(m->hdr->nlmsg_type == RTM_NEWLINK || m->hdr->nlmsg_type == RTM_DELLINK ||
- m->hdr->nlmsg_type == RTM_GETLINK || m->hdr->nlmsg_type == RTM_SETLINK, -EINVAL);
ifi = NLMSG_DATA(m->hdr);
@@ -406,18 +438,13 @@ int sd_rtnl_message_open_container(sd_rtnl_message *m, unsigned short type) {
sd_rtnl_message_get_type(m, &rtm_type);
- switch (rtm_type) {
- case RTM_NEWLINK:
- case RTM_SETLINK:
- case RTM_GETLINK:
- case RTM_DELLINK:
- if (type == IFLA_LINKINFO)
- return add_rtattr(m, type, NULL, 0);
- else
- return -ENOTSUP;
- default:
+ if (message_type_is_link(rtm_type)) {
+ if (type == IFLA_LINKINFO)
+ return add_rtattr(m, type, NULL, 0);
+ else
return -ENOTSUP;
- }
+ } else
+ return -ENOTSUP;
return 0;
}
@@ -519,6 +546,7 @@ int sd_rtnl_message_read(sd_rtnl_message *m, unsigned short *type, void **data)
uint32_t message_get_serial(sd_rtnl_message *m) {
assert(m);
+ assert(m->hdr);
return m->hdr->nlmsg_seq;
}
@@ -527,6 +555,7 @@ int sd_rtnl_message_get_errno(sd_rtnl_message *m) {
struct nlmsgerr *err;
assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
if (m->hdr->nlmsg_type != NLMSG_ERROR)
return 0;
@@ -537,6 +566,10 @@ int sd_rtnl_message_get_errno(sd_rtnl_message *m) {
}
int message_seal(sd_rtnl *nl, sd_rtnl_message *m) {
+ assert(nl);
+ assert(m);
+ assert(m->hdr);
+
if (m->sealed)
return -EPERM;
@@ -547,8 +580,8 @@ int message_seal(sd_rtnl *nl, sd_rtnl_message *m) {
}
static int message_receive_need(sd_rtnl *rtnl, size_t *need) {
- assert_return(rtnl, -EINVAL);
- assert_return(need, -EINVAL);
+ assert(rtnl);
+ assert(need);
/* ioctl(rtnl->fd, FIONREAD, &need)
Does not appear to work on netlink sockets. libnl uses
@@ -576,8 +609,9 @@ int socket_write_message(sd_rtnl *nl, sd_rtnl_message *m) {
};
ssize_t k;
- assert_return(nl, -EINVAL);
- assert_return(m, -EINVAL);
+ assert(nl);
+ assert(m);
+ assert(m->hdr);
k = sendto(nl->fd, m->hdr, m->hdr->nlmsg_len,
0, &addr.sa, sizeof(addr));
@@ -603,8 +637,8 @@ int socket_read_message(sd_rtnl *nl, sd_rtnl_message **ret) {
ssize_t k;
size_t need;
- assert_return(nl, -EINVAL);
- assert_return(ret, -EINVAL);
+ assert(nl);
+ assert(ret);
r = message_receive_need(nl, &need);
if (r < 0)