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- add xsendto and use where appropriate; shrink iplink; sanitize libiproute a bit.

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-916 byte
This commit is contained in:
Bernhard Reutner-Fischer 2007-04-12 11:34:39 +00:00
parent 51742f4bb0
commit b290889f02
16 changed files with 159 additions and 239 deletions
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2
include/libbb.h
View File

@ -298,6 +298,8 @@ int xsocket(int domain, int type, int protocol);
void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
void xlisten(int s, int backlog);
void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen);
ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
socklen_t tolen);
int setsockopt_reuseaddr(int fd);
int setsockopt_broadcast(int fd);
/* NB: returns port in host byte order */

16
libbb/xfuncs.c
View File

@ -557,6 +557,22 @@ void xlisten(int s, int backlog)
if (listen(s, backlog)) bb_perror_msg_and_die("listen");
}
/* Die with an error message if we the sendto failed.
* Return bytes sent otherwise
*/
ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
socklen_t tolen)
{
ssize_t ret = sendto(s, buf, len, 0, to, tolen);
if (ret < 0) {
if (ENABLE_FEATURE_CLEAN_UP)
close(s);
bb_perror_msg_and_die("sendto");
}
return ret;
}
// xstat() - a stat() which dies on failure with meaningful error message
void xstat(const char *name, struct stat *stat_buf)
{

6
networking/ether-wake.c
View File

@ -199,12 +199,8 @@ int ether_wake_main(int argc, char **argv)
whereto.sa_family = 0;
strcpy(whereto.sa_data, ifname);
#endif
if (sendto(s, outpack, pktsize, 0, (struct sockaddr *)&whereto, sizeof(whereto)) < 0)
bb_perror_msg(bb_msg_write_error);
xsendto(s, outpack, pktsize, (struct sockaddr *)&whereto, sizeof(whereto));
close(s);
return EXIT_SUCCESS;
}

42
networking/libiproute/ipaddress.c
View File

@ -486,22 +486,13 @@ int ipaddr_list_or_flush(int argc, char **argv, int flush)
argc--;
}
if (rtnl_open(&rth, 0) < 0)
exit(1);
xrtnl_open(&rth);
if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
bb_perror_msg_and_die("cannot send dump request");
}
if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) {
bb_error_msg_and_die("dump terminated");
}
xrtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK);
xrtnl_dump_filter(&rth, store_nlmsg, &linfo);
if (filter_dev) {
filter.ifindex = ll_name_to_index(filter_dev);
if (filter.ifindex <= 0) {
bb_error_msg_and_die("device \"%s\" does not exist", filter_dev);
}
filter.ifindex = xll_name_to_index(filter_dev);
}
if (flush) {
@ -513,13 +504,9 @@ int ipaddr_list_or_flush(int argc, char **argv, int flush)
filter.rth = &rth;
for (;;) {
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
bb_perror_msg_and_die("cannot send dump request");
}
xrtnl_wilddump_request(&rth, filter.family, RTM_GETADDR);
filter.flushed = 0;
if (rtnl_dump_filter(&rth, print_addrinfo, stdout, NULL, NULL) < 0) {
bb_error_msg_and_die("flush terminated");
}
xrtnl_dump_filter(&rth, print_addrinfo, stdout);
if (filter.flushed == 0) {
return 0;
}
@ -529,13 +516,8 @@ int ipaddr_list_or_flush(int argc, char **argv, int flush)
}
if (filter.family != AF_PACKET) {
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
bb_perror_msg_and_die("cannot send dump request");
}
if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) {
bb_error_msg_and_die("dump terminated");
}
xrtnl_wilddump_request(&rth, filter.family, RTM_GETADDR);
xrtnl_dump_filter(&rth, store_nlmsg, &ainfo);
}
@ -779,15 +761,11 @@ static int ipaddr_modify(int cmd, int argc, char **argv)
if (!scoped && cmd != RTM_DELADDR)
req.ifa.ifa_scope = default_scope(&lcl);
if (rtnl_open(&rth, 0) < 0)
exit(1);
xrtnl_open(&rth);
ll_init_map(&rth);
req.ifa.ifa_index = ll_name_to_index(d);
if (req.ifa.ifa_index == 0) {
bb_error_msg_and_die("cannot find device \"%s\"", d);
}
req.ifa.ifa_index = xll_name_to_index(d);
if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
return 2;

75
networking/libiproute/iplink.c
View File

@ -42,10 +42,7 @@ static int get_ctl_fd(void)
fd = socket(PF_PACKET, SOCK_DGRAM, 0);
if (fd >= 0)
return fd;
fd = socket(PF_INET6, SOCK_DGRAM, 0);
if (fd >= 0)
return fd;
bb_perror_msg_and_die("cannot create control socket");
return xsocket(PF_INET6, SOCK_DGRAM, 0);
}
/* Exits on error */
@ -125,10 +122,7 @@ static int get_address(char *dev, int *htype)
socklen_t alen;
int s;
s = socket(PF_PACKET, SOCK_DGRAM, 0);
if (s < 0) {
bb_perror_msg_and_die("socket(PF_PACKET)");
}
s = xsocket(PF_PACKET, SOCK_DGRAM, 0);
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, dev, sizeof(ifr.ifr_name));
@ -140,9 +134,7 @@ static int get_address(char *dev, int *htype)
me.sll_family = AF_PACKET;
me.sll_ifindex = ifr.ifr_ifindex;
me.sll_protocol = htons(ETH_P_LOOP);
if (bind(s, (struct sockaddr*)&me, sizeof(me)) == -1) {
bb_perror_msg_and_die("bind");
}
xbind(s, (struct sockaddr*)&me, sizeof(me));
alen = sizeof(me);
if (getsockname(s, (struct sockaddr*)&me, &alen) == -1) {
@ -195,54 +187,63 @@ static int do_set(int argc, char **argv)
struct ifreq ifr0, ifr1;
char *newname = NULL;
int htype, halen;
static const char * const keywords[] = {
"up", "down", "name", "mtu", "multicast", "arp", "addr", "dev",
"on", "off", NULL
};
enum { ARG_up = 1, ARG_down, ARG_name, ARG_mtu, ARG_multicast, ARG_arp,
ARG_addr, ARG_dev, PARM_on, PARM_off };
smalluint key;
while (argc > 0) {
if (strcmp(*argv, "up") == 0) {
key = index_in_str_array(keywords, *argv) + 1;
if (key == ARG_up) {
mask |= IFF_UP;
flags |= IFF_UP;
} else if (strcmp(*argv, "down") == 0) {
} else if (key == ARG_down) {
mask |= IFF_UP;
flags &= ~IFF_UP;
} else if (strcmp(*argv, "name") == 0) {
} else if (key == ARG_name) {
NEXT_ARG();
newname = *argv;
} else if (strcmp(*argv, "mtu") == 0) {
} else if (key == ARG_mtu) {
NEXT_ARG();
if (mtu != -1)
duparg("mtu", *argv);
if (get_integer(&mtu, *argv, 0))
invarg(*argv, "mtu");
} else if (strcmp(*argv, "multicast") == 0) {
} else if (key == ARG_multicast) {
NEXT_ARG();
mask |= IFF_MULTICAST;
if (strcmp(*argv, "on") == 0) {
key = index_in_str_array(keywords, *argv) + 1;
if (key == PARM_on) {
flags |= IFF_MULTICAST;
} else if (strcmp(*argv, "off") == 0) {
} else if (key == PARM_off) {
flags &= ~IFF_MULTICAST;
} else
on_off("multicast");
} else if (strcmp(*argv, "arp") == 0) {
} else if (key == ARG_arp) {
NEXT_ARG();
mask |= IFF_NOARP;
if (strcmp(*argv, "on") == 0) {
key = index_in_str_array(keywords, *argv) + 1;
if (key == PARM_on) {
flags &= ~IFF_NOARP;
} else if (strcmp(*argv, "off") == 0) {
} else if (key == PARM_off) {
flags |= IFF_NOARP;
} else
on_off("noarp");
} else if (strcmp(*argv, "addr") == 0) {
on_off("arp");
} else if (key == ARG_addr) {
NEXT_ARG();
newaddr = *argv;
} else {
if (strcmp(*argv, "dev") == 0) {
if (key == ARG_dev) {
NEXT_ARG();
}
if (dev)
duparg2("dev", *argv);
dev = *argv;
}
argc--;
argv++;
argc--; argv++;
}
if (!dev) {
@ -291,16 +292,18 @@ static int ipaddr_list_link(int argc, char **argv)
/* Return value becomes exitcode. It's okay to not return at all */
int do_iplink(int argc, char **argv)
{
static const char * const keywords[] = {
"set", "show", "lst", "list", NULL
};
smalluint key;
if (argc <= 0)
return ipaddr_list_link(0, NULL);
if (matches(*argv, "set") == 0)
return do_set(argc-1, argv+1);
if (matches(*argv, "show") == 0 ||
matches(*argv, "lst") == 0 ||
matches(*argv, "list") == 0)
return ipaddr_list_link(argc-1, argv+1);
bb_error_msg_and_die("command \"%s\" is unknown", *argv);
key = index_in_substr_array(keywords, *argv) + 1;
if (key == 0)
bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
argc--; argv++;
if (key == 1) /* set */
return do_set(argc, argv);
else /* show, lst, list */
return ipaddr_list_link(argc, argv);
}

74
networking/libiproute/iproute.c
View File

@ -102,10 +102,8 @@ static int print_route(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
return 0;
len -= NLMSG_LENGTH(sizeof(*r));
if (len < 0) {
bb_error_msg("wrong nlmsg len %d", len);
return -1;
}
if (len < 0)
bb_error_msg_and_die("wrong nlmsg len %d", len);
if (r->rtm_family == AF_INET6)
host_len = 128;
@ -186,7 +184,7 @@ static int print_route(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
struct nlmsghdr *fn;
if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
if (flush_update())
return -1;
bb_error_msg_and_die("flush");
}
fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
memcpy(fn, n, n->nlmsg_len);
@ -410,9 +408,7 @@ static int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
argc--; argv++;
}
if (rtnl_open(&rth, 0) < 0) {
return 1;
}
xrtnl_open(&rth);
if (d) {
int idx;
@ -420,10 +416,7 @@ static int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
ll_init_map(&rth);
if (d) {
idx = ll_name_to_index(d);
if (idx == 0) {
bb_error_msg_and_die("cannot find device \"%s\"", d);
}
idx = xll_name_to_index(d);
addattr32(&req.n, sizeof(req), RTA_OIF, idx);
}
}
@ -478,7 +471,7 @@ static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
req.rtm.rtm_family = family;
req.rtm.rtm_flags |= RTM_F_CLONED;
return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
return xsendto(rth->fd, (void*)&req, sizeof(req), (struct sockaddr*)&nladdr, sizeof(nladdr));
}
static void iproute_flush_cache(void)
@ -592,9 +585,7 @@ static int iproute_list_or_flush(int argc, char **argv, int flush)
do_ipv6 = AF_INET;
}
if (rtnl_open(&rth, 0) < 0) {
return 1;
}
xrtnl_open(&rth);
ll_init_map(&rth);
@ -602,18 +593,12 @@ static int iproute_list_or_flush(int argc, char **argv, int flush)
int idx;
if (id) {
idx = ll_name_to_index(id);
if (idx == 0) {
bb_error_msg_and_die("cannot find device \"%s\"", id);
}
idx = xll_name_to_index(id);
filter.iif = idx;
filter.iifmask = -1;
}
if (od) {
idx = ll_name_to_index(od);
if (idx == 0) {
bb_error_msg("cannot find device \"%s\"", od);
}
idx = xll_name_to_index(od);
filter.oif = idx;
filter.oifmask = -1;
}
@ -635,13 +620,9 @@ static int iproute_list_or_flush(int argc, char **argv, int flush)
filter.rth = &rth;
for (;;) {
if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
bb_perror_msg_and_die("cannot send dump request");
}
xrtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE);
filter.flushed = 0;
if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
bb_error_msg_and_die("flush terminated");
}
xrtnl_dump_filter(&rth, print_route, stdout);
if (filter.flushed == 0) {
return 0;
}
@ -651,18 +632,13 @@ static int iproute_list_or_flush(int argc, char **argv, int flush)
}
if (filter.tb != -1) {
if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
bb_perror_msg_and_die("cannot send dump request");
}
xrtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE);
} else {
if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
bb_perror_msg_and_die("cannot send dump request");
}
}
if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
bb_error_msg_and_die("dump terminated");
}
xrtnl_dump_filter(&rth, print_route, stdout);
return 0;
}
@ -755,8 +731,7 @@ static int iproute_get(int argc, char **argv)
bb_error_msg_and_die("need at least destination address");
}
if (rtnl_open(&rth, 0) < 0)
return 1;
xrtnl_open(&rth);
ll_init_map(&rth);
@ -764,17 +739,11 @@ static int iproute_get(int argc, char **argv)
int idx;
if (idev) {
idx = ll_name_to_index(idev);
if (idx == 0) {
bb_error_msg_and_die("cannot find device \"%s\"", idev);
}
idx = xll_name_to_index(idev);
addattr32(&req.n, sizeof(req), RTA_IIF, idx);
}
if (odev) {
idx = ll_name_to_index(odev);
if (idx == 0) {
bb_error_msg_and_die("cannot find device \"%s\"", odev);
}
idx = xll_name_to_index(odev);
addattr32(&req.n, sizeof(req), RTA_OIF, idx);
}
}
@ -792,9 +761,7 @@ static int iproute_get(int argc, char **argv)
int len = req.n.nlmsg_len;
struct rtattr * tb[RTA_MAX+1];
if (print_route(NULL, &req.n, (void*)stdout) < 0) {
bb_error_msg_and_die("an error :-)");
}
print_route(NULL, &req.n, (void*)stdout);
if (req.n.nlmsg_type != RTM_NEWROUTE) {
bb_error_msg_and_die("not a route?");
@ -829,12 +796,7 @@ static int iproute_get(int argc, char **argv)
return 2;
}
}
if (print_route(NULL, &req.n, (void*)stdout) < 0) {
// how is this useful?
bb_error_msg_and_die("an error :-)");
}
print_route(NULL, &req.n, (void*)stdout);
return 0;
}

15
networking/libiproute/iprule.c
View File

@ -175,16 +175,10 @@ static int iprule_list(int argc, char **argv)
return -1;
}
if (rtnl_open(&rth, 0) < 0)
return 1;
xrtnl_open(&rth);
if (rtnl_wilddump_request(&rth, af, RTM_GETRULE) < 0) {
bb_perror_msg_and_die("cannot send dump request");
}
if (rtnl_dump_filter(&rth, print_rule, stdout, NULL, NULL) < 0) {
bb_error_msg_and_die("dump terminated");
}
xrtnl_wilddump_request(&rth, af, RTM_GETRULE);
xrtnl_dump_filter(&rth, print_rule, stdout);
return 0;
}
@ -296,8 +290,7 @@ static int iprule_modify(int cmd, int argc, char **argv)
if (!table_ok && cmd == RTM_NEWRULE)
req.r.rtm_table = RT_TABLE_MAIN;
if (rtnl_open(&rth, 0) < 0)
return 1;
xrtnl_open(&rth);
if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
return 2;

66
networking/libiproute/libnetlink.c
View File

@ -28,44 +28,31 @@ void rtnl_close(struct rtnl_handle *rth)
close(rth->fd);
}
int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions)
int xrtnl_open(struct rtnl_handle *rth/*, unsigned subscriptions*/)
{
socklen_t addr_len;
memset(rth, 0, sizeof(rth));
rth->fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
if (rth->fd < 0) {
bb_perror_msg("cannot open netlink socket");
return -1;
}
rth->fd = xsocket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
memset(&rth->local, 0, sizeof(rth->local));
rth->local.nl_family = AF_NETLINK;
rth->local.nl_groups = subscriptions;
/*rth->local.nl_groups = subscriptions;*/
if (bind(rth->fd, (struct sockaddr*)&rth->local, sizeof(rth->local)) < 0) {
bb_perror_msg("cannot bind netlink socket");
return -1;
}
xbind(rth->fd, (struct sockaddr*)&rth->local, sizeof(rth->local));
addr_len = sizeof(rth->local);
if (getsockname(rth->fd, (struct sockaddr*)&rth->local, &addr_len) < 0) {
bb_perror_msg("cannot getsockname");
return -1;
}
if (addr_len != sizeof(rth->local)) {
bb_error_msg("wrong address length %d", addr_len);
return -1;
}
if (rth->local.nl_family != AF_NETLINK) {
bb_error_msg("wrong address family %d", rth->local.nl_family);
return -1;
}
if (getsockname(rth->fd, (struct sockaddr*)&rth->local, &addr_len) < 0)
bb_perror_msg_and_die("cannot getsockname");
if (addr_len != sizeof(rth->local))
bb_error_msg_and_die("wrong address length %d", addr_len);
if (rth->local.nl_family != AF_NETLINK)
bb_error_msg_and_die("wrong address family %d", rth->local.nl_family);
rth->seq = time(NULL);
return 0;
}
int rtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
int xrtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
{
struct {
struct nlmsghdr nlh;
@ -83,7 +70,8 @@ int rtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
req.g.rtgen_family = family;
return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
return xsendto(rth->fd, (void*)&req, sizeof(req),
(struct sockaddr*)&nladdr, sizeof(nladdr));
}
int rtnl_send(struct rtnl_handle *rth, char *buf, int len)
@ -93,7 +81,7 @@ int rtnl_send(struct rtnl_handle *rth, char *buf, int len)
memset(&nladdr, 0, sizeof(nladdr));
nladdr.nl_family = AF_NETLINK;
return sendto(rth->fd, buf, len, 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
return xsendto(rth->fd, buf, len, (struct sockaddr*)&nladdr, sizeof(nladdr));
}
int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len)
@ -120,11 +108,11 @@ int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len)
return sendmsg(rth->fd, &msg, 0);
}
int rtnl_dump_filter(struct rtnl_handle *rth,
static int rtnl_dump_filter(struct rtnl_handle *rth,
int (*filter)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
void *arg1,
void *arg1/*,
int (*junk)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
void *arg2)
void *arg2*/)
{
char buf[8192];
struct sockaddr_nl nladdr;
@ -164,12 +152,11 @@ 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) {
/* if (junk) {
err = junk(&nladdr, h, arg2);
if (err < 0) {
if (err < 0)
return err;
}
}
} */
goto skip_it;
}
@ -187,9 +174,8 @@ int rtnl_dump_filter(struct rtnl_handle *rth,
return -1;
}
err = filter(&nladdr, h, arg1);
if (err < 0) {
if (err < 0)
return err;
}
skip_it:
h = NLMSG_NEXT(h, status);
@ -204,6 +190,16 @@ skip_it:
}
}
int xrtnl_dump_filter(struct rtnl_handle *rth,
int (*filter)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
void *arg1)
{
int ret = rtnl_dump_filter(rth, filter, arg1/*, NULL, NULL*/);
if (ret < 0)
bb_error_msg_and_die("dump terminated");
return ret;
}
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 *),

10
networking/libiproute/libnetlink.h
View File

@ -17,15 +17,13 @@ struct rtnl_handle
uint32_t dump;
};
extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions);
extern int xrtnl_open(struct rtnl_handle *rth);
extern void rtnl_close(struct rtnl_handle *rth);
extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
extern int xrtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len);
extern int rtnl_dump_filter(struct rtnl_handle *rth,
extern int xrtnl_dump_filter(struct rtnl_handle *rth,
int (*filter)(struct sockaddr_nl*, struct nlmsghdr *n, void*),
void *arg1,
int (*junk)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
void *arg2);
void *arg1);
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 *),

37
networking/libiproute/ll_map.c
View File

@ -128,7 +128,7 @@ unsigned ll_index_to_flags(int idx)
}
// TODO: caching is not warranted - no users which repeatedly call it
int ll_name_to_index(char *name)
int xll_name_to_index(const char * const name)
{
static char ncache[16];
static int icache;
@ -136,17 +136,21 @@ int ll_name_to_index(char *name)
struct idxmap *im;
int sock_fd;
int i;
int ret = 0;
if (name == NULL)
return 0;
if (icache && strcmp(name, ncache) == 0)
return icache;
goto out;
if (icache && strcmp(name, ncache) == 0) {
ret = icache;
goto out;
}
for (i = 0; i < 16; i++) {
for (im = idxmap[i]; im; im = im->next) {
if (strcmp(im->name, name) == 0) {
icache = im->index;
strcpy(ncache, name);
return im->index;
ret = im->index;
goto out;
}
}
}
@ -160,29 +164,26 @@ int ll_name_to_index(char *name)
sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
if (sock_fd) {
struct ifreq ifr;
int ret;
int tmp;
strncpy(ifr.ifr_name, name, IFNAMSIZ);
ifr.ifr_ifindex = -1;
ret = ioctl(sock_fd, SIOCGIFINDEX, &ifr);
tmp = ioctl(sock_fd, SIOCGIFINDEX, &ifr);
close(sock_fd);
if (ret >= 0)
if (tmp >= 0)
/* In theory, we should redump the interface list
* to update our cache, this is left as an exercise
* to the reader... Jean II */
return ifr.ifr_ifindex;
ret = ifr.ifr_ifindex;
}
return 0;
out:
if (ret <= 0)
bb_error_msg_and_die("cannot find device \"%s\"", name);
return ret;
}
int ll_init_map(struct rtnl_handle *rth)
{
if (rtnl_wilddump_request(rth, AF_UNSPEC, RTM_GETLINK) < 0) {
bb_perror_msg_and_die("cannot send dump request");
}
if (rtnl_dump_filter(rth, ll_remember_index, &idxmap, NULL, NULL) < 0) {
bb_error_msg_and_die("dump terminated");
}
xrtnl_wilddump_request(rth, AF_UNSPEC, RTM_GETLINK);
xrtnl_dump_filter(rth, ll_remember_index, &idxmap);
return 0;
}

2
networking/libiproute/ll_map.h
View File

@ -4,7 +4,7 @@
extern int ll_remember_index(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg);
extern int ll_init_map(struct rtnl_handle *rth);
extern int ll_name_to_index(char *name);
extern int xll_name_to_index(const char * const name);
extern const char *ll_index_to_name(int idx);
extern const char *ll_idx_n2a(int idx, char *buf);
extern int ll_index_to_type(int idx);

2
networking/libiproute/utils.h
View File

@ -78,7 +78,7 @@ extern const char *rt_addr_n2a(int af, int len, void *addr, char *buf, int bufle
void invarg(const char *, const char *) ATTRIBUTE_NORETURN;
void duparg(const char *, const char *) ATTRIBUTE_NORETURN;
void duparg2(const char *, const char *) ATTRIBUTE_NORETURN;
int ATTRIBUTE_DEPRECATED matches(const char *arg, const char *pattern);
int /*ATTRIBUTE_DEPRECATED*/ matches(const char *arg, const char *pattern);
int inet_addr_match(inet_prefix *a, inet_prefix *b, int bits);
const char *dnet_ntop(int af, const void *addr, char *str, size_t len);

25
networking/ping.c
View File

@ -101,15 +101,9 @@ static void ping4(len_and_sockaddr *lsa)
pkt->icmp_type = ICMP_ECHO;
pkt->icmp_cksum = in_cksum((unsigned short *) pkt, sizeof(packet));
c = sendto(pingsock, packet, DEFDATALEN + ICMP_MINLEN, 0,
c = xsendto(pingsock, packet, DEFDATALEN + ICMP_MINLEN,
(struct sockaddr *) &pingaddr, sizeof(pingaddr));
if (c < 0) {
if (ENABLE_FEATURE_CLEAN_UP)
close(pingsock);
bb_perror_msg_and_die("sendto");
}
/* listen for replies */
while (1) {
struct sockaddr_in from;
@ -153,15 +147,9 @@ static void ping6(len_and_sockaddr *lsa)
sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt));
c = sendto(pingsock, packet, DEFDATALEN + sizeof (struct icmp6_hdr), 0,
c = xsendto(pingsock, packet, DEFDATALEN + sizeof (struct icmp6_hdr),
(struct sockaddr *) &pingaddr, sizeof(pingaddr));
if (c < 0) {
if (ENABLE_FEATURE_CLEAN_UP)
close(pingsock);
bb_perror_msg_and_die("sendto");
}
/* listen for replies */
while (1) {
struct sockaddr_in6 from;
@ -306,15 +294,12 @@ static void sendping_tail(void (*sp)(int), const void *pkt, int size_pkt)
/* sizeof(pingaddr) can be larger than real sa size, but I think
* it doesn't matter */
sz = sendto(pingsock, pkt, size_pkt, 0, &pingaddr.sa, sizeof(pingaddr));
if (sz < 0)
bb_perror_msg_and_die("sendto");
sz = xsendto(pingsock, pkt, size_pkt, &pingaddr.sa, sizeof(pingaddr));
if (sz != size_pkt)
bb_error_msg_and_die("ping wrote %d chars; %d expected", sz,
size_pkt);
bb_error_msg_and_die(bb_msg_write_error);
signal(SIGALRM, sp);
if (pingcount == 0 || ntransmitted < pingcount) { /* schedule next in 1s */
if (pingcount == 0 || ntransmitted < pingcount) { /* schedule next in 1s */
alarm(PINGINTERVAL);
} else { /* done, wait for the last ping to come back */
/* todo, don't necessarily need to wait so long... */

7
networking/tftp.c
View File

@ -257,12 +257,7 @@ static int tftp(
fprintf(stderr, "%02x ", (unsigned char) *cp);
fprintf(stderr, "\n");
#endif
if (sendto(socketfd, xbuf, len, 0,
&peer_lsa->sa, peer_lsa->len) < 0) {
bb_perror_msg("send");
len = -1;
break;
}
xsendto(socketfd, xbuf, len, &peer_lsa->sa, peer_lsa->len);
if (finished && (opcode == TFTP_ACK)) {
break;

13
networking/traceroute.c
View File

@ -695,14 +695,11 @@ send_probe(int seq, int ttl, struct timeval *tp)
}
#endif
cc = sendto(sndsock, (char *)outip,
packlen, 0, (struct sockaddr *)&whereto, sizeof(whereto));
if (cc < 0 || cc != packlen) {
if (cc < 0)
bb_perror_msg_and_die("sendto");
printf("%s: wrote %s %d chars, ret=%d\n",
applet_name, hostname, packlen, cc);
(void)fflush(stdout);
cc = xsendto(sndsock, (char *)outip,
packlen, (struct sockaddr *)&whereto, sizeof(whereto));
if (cc != packlen) {
bb_info_msg("wrote %s %d chars, ret=%d", hostname, packlen, cc);
// (void)fflush(stdout);
}
}

6
networking/zcip.c
View File

@ -114,10 +114,8 @@ static void arp(int fd, struct sockaddr *saddr, int op,
memcpy(&p.arp.arp_tpa, &target_ip, sizeof(p.arp.arp_tpa));
// send it
if (sendto(fd, &p, sizeof(p), 0, saddr, sizeof(*saddr)) < 0) {
bb_perror_msg("sendto");
//return -errno;
}
xsendto(fd, &p, sizeof(p), saddr, sizeof(*saddr));
// Currently all callers ignore errors, that's why returns are
// commented out...
//return 0;