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-rw-r--r--networking/libiproute/libnetlink.c126
1 files changed, 65 insertions, 61 deletions
diff --git a/networking/libiproute/libnetlink.c b/networking/libiproute/libnetlink.c
index a1f39d4..9967238 100644
--- a/networking/libiproute/libnetlink.c
+++ b/networking/libiproute/libnetlink.c
@@ -24,6 +24,7 @@
#include <sys/uio.h>
#include "libnetlink.h"
+#include "libbb.h"
void rtnl_close(struct rtnl_handle *rth)
{
@@ -38,7 +39,7 @@ int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions)
rth->fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
if (rth->fd < 0) {
- perror("Cannot open netlink socket");
+ perror_msg("Cannot open netlink socket");
return -1;
}
@@ -47,20 +48,20 @@ int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions)
rth->local.nl_groups = subscriptions;
if (bind(rth->fd, (struct sockaddr*)&rth->local, sizeof(rth->local)) < 0) {
- perror("Cannot bind netlink socket");
+ perror_msg("Cannot bind netlink socket");
return -1;
}
addr_len = sizeof(rth->local);
if (getsockname(rth->fd, (struct sockaddr*)&rth->local, &addr_len) < 0) {
- perror("Cannot getsockname");
+ perror_msg("Cannot getsockname");
return -1;
}
if (addr_len != sizeof(rth->local)) {
- fprintf(stderr, "Wrong address length %d\n", addr_len);
+ error_msg("Wrong address length %d", addr_len);
return -1;
}
if (rth->local.nl_family != AF_NETLINK) {
- fprintf(stderr, "Wrong address family %d\n", rth->local.nl_family);
+ error_msg("Wrong address family %d", rth->local.nl_family);
return -1;
}
rth->seq = time(NULL);
@@ -148,16 +149,15 @@ int rtnl_dump_filter(struct rtnl_handle *rth,
if (status < 0) {
if (errno == EINTR)
continue;
- perror("OVERRUN");
+ perror_msg("OVERRUN");
continue;
}
if (status == 0) {
- fprintf(stderr, "EOF on netlink\n");
+ error_msg("EOF on netlink");
return -1;
}
if (msg.msg_namelen != sizeof(nladdr)) {
- fprintf(stderr, "sender address length == %d\n", msg.msg_namelen);
- exit(1);
+ error_msg_and_die("sender address length == %d", msg.msg_namelen);
}
h = (struct nlmsghdr*)buf;
@@ -168,38 +168,40 @@ int rtnl_dump_filter(struct rtnl_handle *rth,
h->nlmsg_seq != rth->dump) {
if (junk) {
err = junk(&nladdr, h, arg2);
- if (err < 0)
+ if (err < 0) {
return err;
+ }
}
goto skip_it;
}
- if (h->nlmsg_type == NLMSG_DONE)
+ if (h->nlmsg_type == NLMSG_DONE) {
return 0;
+ }
if (h->nlmsg_type == NLMSG_ERROR) {
- struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
+ struct nlmsgerr *l_err = (struct nlmsgerr*)NLMSG_DATA(h);
if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
- fprintf(stderr, "ERROR truncated\n");
+ error_msg("ERROR truncated");
} else {
- errno = -err->error;
- perror("RTNETLINK answers");
+ errno = -l_err->error;
+ perror_msg("RTNETLINK answers");
}
return -1;
}
err = filter(&nladdr, h, arg1);
- if (err < 0)
+ if (err < 0) {
return err;
+ }
skip_it:
h = NLMSG_NEXT(h, status);
}
if (msg.msg_flags & MSG_TRUNC) {
- fprintf(stderr, "Message truncated\n");
+ error_msg("Message truncated");
continue;
}
if (status) {
- fprintf(stderr, "!!!Remnant of size %d\n", status);
- exit(1);
+ error_msg_and_die("!!!Remnant of size %d", status);
}
}
}
@@ -228,13 +230,13 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
nladdr.nl_groups = groups;
n->nlmsg_seq = seq = ++rtnl->seq;
- if (answer == NULL)
+ if (answer == NULL) {
n->nlmsg_flags |= NLM_F_ACK;
-
+ }
status = sendmsg(rtnl->fd, &msg, 0);
if (status < 0) {
- perror("Cannot talk to rtnetlink");
+ perror_msg("Cannot talk to rtnetlink");
return -1;
}
@@ -245,39 +247,39 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
status = recvmsg(rtnl->fd, &msg, 0);
if (status < 0) {
- if (errno == EINTR)
+ if (errno == EINTR) {
continue;
- perror("OVERRUN");
+ }
+ perror_msg("OVERRUN");
continue;
}
if (status == 0) {
- fprintf(stderr, "EOF on netlink\n");
+ error_msg("EOF on netlink");
return -1;
}
if (msg.msg_namelen != sizeof(nladdr)) {
- fprintf(stderr, "sender address length == %d\n", msg.msg_namelen);
- exit(1);
+ error_msg_and_die("sender address length == %d", msg.msg_namelen);
}
for (h = (struct nlmsghdr*)buf; status >= sizeof(*h); ) {
- int err;
+ int l_err;
int len = h->nlmsg_len;
int l = len - sizeof(*h);
if (l<0 || len>status) {
if (msg.msg_flags & MSG_TRUNC) {
- fprintf(stderr, "Truncated message\n");
+ error_msg("Truncated message");
return -1;
}
- fprintf(stderr, "!!!malformed message: len=%d\n", len);
- exit(1);
+ error_msg_and_die("!!!malformed message: len=%d", len);
}
if (h->nlmsg_pid != rtnl->local.nl_pid ||
h->nlmsg_seq != seq) {
if (junk) {
- err = junk(&nladdr, h, jarg);
- if (err < 0)
- return err;
+ l_err = junk(&nladdr, h, jarg);
+ if (l_err < 0) {
+ return l_err;
+ }
}
continue;
}
@@ -285,15 +287,16 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
if (h->nlmsg_type == NLMSG_ERROR) {
struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
if (l < sizeof(struct nlmsgerr)) {
- fprintf(stderr, "ERROR truncated\n");
+ error_msg("ERROR truncated");
} else {
errno = -err->error;
if (errno == 0) {
- if (answer)
+ if (answer) {
memcpy(answer, h, h->nlmsg_len);
+ }
return 0;
}
- perror("RTNETLINK answers");
+ perror_msg("RTNETLINK answers");
}
return -1;
}
@@ -302,18 +305,17 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
return 0;
}
- fprintf(stderr, "Unexpected reply!!!\n");
+ error_msg("Unexpected reply!!!");
status -= NLMSG_ALIGN(len);
h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));
}
if (msg.msg_flags & MSG_TRUNC) {
- fprintf(stderr, "Message truncated\n");
+ error_msg("Message truncated");
continue;
}
if (status) {
- fprintf(stderr, "!!!Remnant of size %d\n", status);
- exit(1);
+ error_msg_and_die("!!!Remnant of size %d", status);
}
}
}
@@ -349,16 +351,15 @@ int rtnl_listen(struct rtnl_handle *rtnl,
if (status < 0) {
if (errno == EINTR)
continue;
- perror("OVERRUN");
+ perror_msg("OVERRUN");
continue;
}
if (status == 0) {
- fprintf(stderr, "EOF on netlink\n");
+ error_msg("EOF on netlink");
return -1;
}
if (msg.msg_namelen != sizeof(nladdr)) {
- fprintf(stderr, "Sender address length == %d\n", msg.msg_namelen);
- exit(1);
+ error_msg_and_die("Sender address length == %d", msg.msg_namelen);
}
for (h = (struct nlmsghdr*)buf; status >= sizeof(*h); ) {
int err;
@@ -367,27 +368,26 @@ int rtnl_listen(struct rtnl_handle *rtnl,
if (l<0 || len>status) {
if (msg.msg_flags & MSG_TRUNC) {
- fprintf(stderr, "Truncated message\n");
+ error_msg("Truncated message");
return -1;
}
- fprintf(stderr, "!!!malformed message: len=%d\n", len);
- exit(1);
+ error_msg_and_die("!!!malformed message: len=%d", len);
}
err = handler(&nladdr, h, jarg);
- if (err < 0)
+ if (err < 0) {
return err;
+ }
status -= NLMSG_ALIGN(len);
h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));
}
if (msg.msg_flags & MSG_TRUNC) {
- fprintf(stderr, "Message truncated\n");
+ error_msg("Message truncated");
continue;
}
if (status) {
- fprintf(stderr, "!!!Remnant of size %d\n", status);
- exit(1);
+ error_msg_and_die("!!!Remnant of size %d", status);
}
}
}
@@ -415,7 +415,7 @@ int rtnl_from_file(FILE *rtnl,
if (status < 0) {
if (errno == EINTR)
continue;
- perror("rtnl_from_file: fread");
+ perror_msg("rtnl_from_file: fread");
return -1;
}
if (status == 0)
@@ -426,7 +426,7 @@ int rtnl_from_file(FILE *rtnl,
l = len - sizeof(*h);
if (l<0 || len>sizeof(buf)) {
- fprintf(stderr, "!!!malformed message: len=%d @%lu\n",
+ error_msg("!!!malformed message: len=%d @%lu",
len, ftell(rtnl));
return -1;
}
@@ -434,11 +434,11 @@ int rtnl_from_file(FILE *rtnl,
status = fread(NLMSG_DATA(h), 1, NLMSG_ALIGN(l), rtnl);
if (status < 0) {
- perror("rtnl_from_file: fread");
+ perror_msg("rtnl_from_file: fread");
return -1;
}
if (status < l) {
- fprintf(stderr, "rtnl-from_file: truncated message\n");
+ error_msg("rtnl-from_file: truncated message");
return -1;
}
@@ -482,8 +482,9 @@ int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data)
int len = RTA_LENGTH(4);
struct rtattr *subrta;
- if (RTA_ALIGN(rta->rta_len) + len > maxlen)
+ if (RTA_ALIGN(rta->rta_len) + len > maxlen) {
return -1;
+ }
subrta = (struct rtattr*)(((char*)rta) + RTA_ALIGN(rta->rta_len));
subrta->rta_type = type;
subrta->rta_len = len;
@@ -497,8 +498,9 @@ int rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data, int alen
struct rtattr *subrta;
int len = RTA_LENGTH(alen);
- if (RTA_ALIGN(rta->rta_len) + len > maxlen)
+ if (RTA_ALIGN(rta->rta_len) + len > maxlen) {
return -1;
+ }
subrta = (struct rtattr*)(((char*)rta) + RTA_ALIGN(rta->rta_len));
subrta->rta_type = type;
subrta->rta_len = len;
@@ -511,11 +513,13 @@ int rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data, int alen
int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len)
{
while (RTA_OK(rta, len)) {
- if (rta->rta_type <= max)
+ if (rta->rta_type <= max) {
tb[rta->rta_type] = rta;
+ }
rta = RTA_NEXT(rta,len);
}
- if (len)
- fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len, rta->rta_len);
+ if (len) {
+ error_msg("!!!Deficit %d, rta_len=%d", len, rta->rta_len);
+ }
return 0;
}
generated by cgit v1.1 at 2024-12-28 18:53:49 +0000