libnetlink: comment out unused code; don't use 8k stack buffers
function old new delta ipaddr_modify 1305 1297 -8 do_iprule 963 955 -8 do_iproute 2193 2169 -24 xrtnl_dump_filter 418 391 -27 rtnl_talk 671 536 -135 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/5 up/down: 0/-202) Total: -202 bytes
This commit is contained in:
Denis Vlasenko
parent
5cb40bbbd3
commit
8723a94c25
@ -108,9 +108,10 @@ static int rtnl_dump_filter(struct rtnl_handle *rth,
|
||||
int (*junk)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
|
||||
void *arg2*/)
|
||||
{
|
||||
char buf[8192];
|
||||
int retval = -1;
|
||||
char *buf = xmalloc(8*1024); /* avoid big stack buffer */
|
||||
struct sockaddr_nl nladdr;
|
||||
struct iovec iov = { buf, sizeof(buf) };
|
||||
struct iovec iov = { buf, 8*1024 };
|
||||
|
||||
while (1) {
|
||||
int status;
|
||||
@ -133,7 +134,7 @@ static int rtnl_dump_filter(struct rtnl_handle *rth,
|
||||
}
|
||||
if (status == 0) {
|
||||
bb_error_msg("EOF on netlink");
|
||||
return -1;
|
||||
goto ret;
|
||||
}
|
||||
if (msg.msg_namelen != sizeof(nladdr)) {
|
||||
bb_error_msg_and_die("sender address length == %d", msg.msg_namelen);
|
||||
@ -146,16 +147,18 @@ static int rtnl_dump_filter(struct rtnl_handle *rth,
|
||||
if (nladdr.nl_pid != 0 ||
|
||||
h->nlmsg_pid != rth->local.nl_pid ||
|
||||
h->nlmsg_seq != rth->dump) {
|
||||
/* if (junk) {
|
||||
err = junk(&nladdr, h, arg2);
|
||||
if (err < 0)
|
||||
return err;
|
||||
} */
|
||||
// if (junk) {
|
||||
// err = junk(&nladdr, h, arg2);
|
||||
// if (err < 0) {
|
||||
// retval = err;
|
||||
// goto ret;
|
||||
// }
|
||||
// }
|
||||
goto skip_it;
|
||||
}
|
||||
|
||||
if (h->nlmsg_type == NLMSG_DONE) {
|
||||
return 0;
|
||||
goto ret_0;
|
||||
}
|
||||
if (h->nlmsg_type == NLMSG_ERROR) {
|
||||
struct nlmsgerr *l_err = (struct nlmsgerr*)NLMSG_DATA(h);
|
||||
@ -165,11 +168,13 @@ static int rtnl_dump_filter(struct rtnl_handle *rth,
|
||||
errno = -l_err->error;
|
||||
bb_perror_msg("RTNETLINK answers");
|
||||
}
|
||||
return -1;
|
||||
goto ret;
|
||||
}
|
||||
err = filter(&nladdr, h, arg1);
|
||||
if (err < 0)
|
||||
return err;
|
||||
if (err < 0) {
|
||||
retval = err;
|
||||
goto ret;
|
||||
}
|
||||
|
||||
skip_it:
|
||||
h = NLMSG_NEXT(h, status);
|
||||
@ -181,7 +186,12 @@ skip_it:
|
||||
if (status) {
|
||||
bb_error_msg_and_die("remnant of size %d!", status);
|
||||
}
|
||||
}
|
||||
} /* while (1) */
|
||||
ret_0:
|
||||
retval++; /* = 0 */
|
||||
ret:
|
||||
free(buf);
|
||||
return retval;
|
||||
}
|
||||
|
||||
int xrtnl_dump_filter(struct rtnl_handle *rth,
|
||||
@ -194,17 +204,24 @@ int xrtnl_dump_filter(struct rtnl_handle *rth,
|
||||
return ret;
|
||||
}
|
||||
|
||||
int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
|
||||
unsigned groups, struct nlmsghdr *answer,
|
||||
int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n,
|
||||
pid_t peer, unsigned groups,
|
||||
struct nlmsghdr *answer,
|
||||
int (*junk)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
|
||||
void *jarg)
|
||||
{
|
||||
/* bbox doesn't use parameters no. 3, 4, 6, 7, they are stubbed out */
|
||||
#define peer 0
|
||||
#define groups 0
|
||||
#define junk NULL
|
||||
#define jarg NULL
|
||||
int retval = -1;
|
||||
int status;
|
||||
unsigned seq;
|
||||
struct nlmsghdr *h;
|
||||
struct sockaddr_nl nladdr;
|
||||
struct iovec iov = { (void*)n, n->nlmsg_len };
|
||||
char buf[8192];
|
||||
char *buf = xmalloc(8*1024); /* avoid big stack buffer */
|
||||
struct msghdr msg = {
|
||||
(void*)&nladdr, sizeof(nladdr),
|
||||
&iov, 1,
|
||||
@ -214,8 +231,8 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
|
||||
|
||||
memset(&nladdr, 0, sizeof(nladdr));
|
||||
nladdr.nl_family = AF_NETLINK;
|
||||
nladdr.nl_pid = peer;
|
||||
nladdr.nl_groups = groups;
|
||||
// nladdr.nl_pid = peer;
|
||||
// nladdr.nl_groups = groups;
|
||||
|
||||
n->nlmsg_seq = seq = ++rtnl->seq;
|
||||
if (answer == NULL) {
|
||||
@ -225,13 +242,13 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
|
||||
|
||||
if (status < 0) {
|
||||
bb_perror_msg("cannot talk to rtnetlink");
|
||||
return -1;
|
||||
goto ret;
|
||||
}
|
||||
|
||||
iov.iov_base = buf;
|
||||
|
||||
while (1) {
|
||||
iov.iov_len = sizeof(buf);
|
||||
iov.iov_len = 8*1024;
|
||||
status = recvmsg(rtnl->fd, &msg, 0);
|
||||
|
||||
if (status < 0) {
|
||||
@ -243,20 +260,20 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
|
||||
}
|
||||
if (status == 0) {
|
||||
bb_error_msg("EOF on netlink");
|
||||
return -1;
|
||||
goto ret;
|
||||
}
|
||||
if (msg.msg_namelen != sizeof(nladdr)) {
|
||||
bb_error_msg_and_die("sender address length == %d", msg.msg_namelen);
|
||||
}
|
||||
for (h = (struct nlmsghdr*)buf; status >= sizeof(*h); ) {
|
||||
int l_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) {
|
||||
bb_error_msg("truncated message");
|
||||
return -1;
|
||||
goto ret;
|
||||
}
|
||||
bb_error_msg_and_die("malformed message: len=%d!", len);
|
||||
}
|
||||
@ -264,12 +281,13 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
|
||||
if (nladdr.nl_pid != peer ||
|
||||
h->nlmsg_pid != rtnl->local.nl_pid ||
|
||||
h->nlmsg_seq != seq) {
|
||||
if (junk) {
|
||||
l_err = junk(&nladdr, h, jarg);
|
||||
if (l_err < 0) {
|
||||
return l_err;
|
||||
}
|
||||
}
|
||||
// if (junk) {
|
||||
// l_err = junk(&nladdr, h, jarg);
|
||||
// if (l_err < 0) {
|
||||
// retval = l_err;
|
||||
// goto ret;
|
||||
// }
|
||||
// }
|
||||
continue;
|
||||
}
|
||||
|
||||
@ -283,15 +301,15 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
|
||||
if (answer) {
|
||||
memcpy(answer, h, h->nlmsg_len);
|
||||
}
|
||||
return 0;
|
||||
goto ret_0;
|
||||
}
|
||||
bb_perror_msg("RTNETLINK answers");
|
||||
}
|
||||
return -1;
|
||||
goto ret;
|
||||
}
|
||||
if (answer) {
|
||||
memcpy(answer, h, h->nlmsg_len);
|
||||
return 0;
|
||||
goto ret_0;
|
||||
}
|
||||
|
||||
bb_error_msg("unexpected reply!");
|
||||
@ -306,7 +324,12 @@ int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
|
||||
if (status) {
|
||||
bb_error_msg_and_die("remnant of size %d!", status);
|
||||
}
|
||||
}
|
||||
} /* while (1) */
|
||||
ret_0:
|
||||
retval++; /* = 0 */
|
||||
ret:
|
||||
free(buf);
|
||||
return retval;
|
||||
}
|
||||
|
||||
int addattr32(struct nlmsghdr *n, int maxlen, int type, uint32_t data)
|
||||
|
||||
@ -24,10 +24,15 @@ extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int l
|
||||
extern int xrtnl_dump_filter(struct rtnl_handle *rth,
|
||||
int (*filter)(struct sockaddr_nl*, struct nlmsghdr *n, void*),
|
||||
void *arg1);
|
||||
|
||||
/* bbox doesn't use parameters no. 3, 4, 6, 7, stub them out */
|
||||
#define rtnl_talk(rtnl, n, peer, groups, answer, junk, jarg) \
|
||||
rtnl_talk(rtnl, n, answer)
|
||||
extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
|
||||
unsigned groups, struct nlmsghdr *answer,
|
||||
int (*junk)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
|
||||
void *jarg);
|
||||
|
||||
extern int rtnl_send(struct rtnl_handle *rth, char *buf, int);
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user