From a27a11bb2c033d3e0312dc1d62430a002314686f Mon Sep 17 00:00:00 2001
From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Sat, 18 Aug 2007 14:16:39 +0000
Subject: introduce and use xdup2(int, int) stop checking whether
setsockopt_reuseaddr(int fd) was successful (it always is) remove second
parameter (sockllen) from xmalloc_sockaddr2xxxxx functions
sockaddr2str 142 156 +14
collect_blk 467 474 +7
xdup2 28 33 +5
singlemount 4456 4454 -2
print_host 214 212 -2
nslookup_main 139 137 -2
ftpgetput_main 414 412 -2
udhcpd_main 1258 1255 -3
udhcpc_main 2405 2402 -3
traceroute_main 4125 4122 -3
nc_main 1072 1069 -3
buffer_fill_and_print 76 73 -3
xmalloc_sockaddr2hostonly_noport 18 14 -4
xmalloc_sockaddr2host_noport 18 14 -4
xmalloc_sockaddr2host 15 11 -4
xmalloc_sockaddr2dotted_noport 18 14 -4
xmalloc_sockaddr2dotted 18 14 -4
wget_main 2618 2614 -4
ping_main 393 389 -4
ip_port_str 120 115 -5
dhcprelay_main 1146 1141 -5
dnsd_main 1531 1525 -6
passwd_main 1110 1102 -8
udhcp_kernel_packet 206 197 -9
udhcp_listen_socket 154 144 -10
getty_main 2576 2566 -10
setup 655 640 -15
xmove_fd 51 34 -17
dolisten 759 742 -17
tcpudpsvd_main 1866 1836 -30
startservice 339 299 -40
---
include/libbb.h | 14 +++++++-------
ipsvd/tcpudp.c | 14 +++++++-------
libbb/xconnect.c | 38 ++++++++++++++++++++++++--------------
libbb/xfuncs.c | 9 +++++++--
loginutils/getty.c | 12 +++---------
networking/dnsd.c | 2 +-
networking/ftpgetput.c | 2 +-
networking/inetd.c | 3 +--
networking/nc_bloaty.c | 12 ++++++------
networking/netstat.c | 4 ++--
networking/nslookup.c | 7 +++----
networking/ping.c | 4 ++--
networking/tftp.c | 2 +-
networking/traceroute.c | 2 +-
networking/udhcp/common.h | 2 +-
networking/udhcp/dhcpc.c | 2 +-
networking/udhcp/dhcpd.c | 2 +-
networking/udhcp/dhcprelay.c | 9 +++++----
networking/udhcp/packet.c | 7 ++-----
networking/udhcp/socket.c | 42 ++++++++++++++----------------------------
networking/wget.c | 2 +-
runit/runsv.c | 9 +++------
util-linux/mount.c | 2 +-
23 files changed, 95 insertions(+), 107 deletions(-)
diff --git a/include/libbb.h b/include/libbb.h
index 52bc33940..651c48ba1 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -241,6 +241,7 @@ extern char *bb_get_last_path_component(char *path);
int ndelay_on(int fd);
int ndelay_off(int fd);
+void xdup2(int, int);
void xmove_fd(int, int);
@@ -288,8 +289,7 @@ ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
* time out. Linux does not allow multiple live binds on same ip:port
* regardless of SO_REUSEADDR (unlike some other flavors of Unix).
* Turn it on before you call bind(). */
-//TODO: it seems like in Linux this never fails. Change to void, eliminate error checks
-int setsockopt_reuseaddr(int fd);
+void setsockopt_reuseaddr(int fd); /* On Linux this never fails. */
int setsockopt_broadcast(int fd);
/* NB: returns port in host byte order */
unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port);
@@ -360,14 +360,14 @@ void set_nport(len_and_sockaddr *lsa, unsigned port);
/* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
int get_nport(const struct sockaddr *sa);
/* Reverse DNS. Returns NULL on failure. */
-char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen);
+char* xmalloc_sockaddr2host(const struct sockaddr *sa);
/* This one doesn't append :PORTNUM */
-char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa, socklen_t salen);
+char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa);
/* This one also doesn't fall back to dotted IP (returns NULL) */
-char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa, socklen_t salen);
+char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa);
/* inet_[ap]ton on steroids */
-char* xmalloc_sockaddr2dotted(const struct sockaddr *sa, socklen_t salen);
-char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa, socklen_t salen);
+char* xmalloc_sockaddr2dotted(const struct sockaddr *sa);
+char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa);
// "old" (ipv4 only) API
// users: traceroute.c hostname.c - use _list_ of all IPs
struct hostent *xgethostbyname(const char *name);
diff --git a/ipsvd/tcpudp.c b/ipsvd/tcpudp.c
index 492808a6b..e46b3c60e 100644
--- a/ipsvd/tcpudp.c
+++ b/ipsvd/tcpudp.c
@@ -258,7 +258,7 @@ int tcpudpsvd_main(int argc, char **argv)
#endif
if (verbose) {
- char *addr = xmalloc_sockaddr2dotted(&lsa->sa, sa_len);
+ char *addr = xmalloc_sockaddr2dotted(&lsa->sa);
printf("%s: info: listening on %s", applet_name, addr);
free(addr);
#ifndef SSLSVD
@@ -302,7 +302,7 @@ int tcpudpsvd_main(int argc, char **argv)
if (max_per_host) {
/* Drop connection immediately if cur_per_host > max_per_host
* (minimizing load under SYN flood) */
- remote_ip = xmalloc_sockaddr2dotted_noport(&remote.sa, sa_len);
+ remote_ip = xmalloc_sockaddr2dotted_noport(&remote.sa);
cur_per_host = ipsvd_perhost_add(remote_ip, max_per_host, &hccp);
if (cur_per_host > max_per_host) {
/* ipsvd_perhost_add detected that max is exceeded
@@ -380,11 +380,11 @@ int tcpudpsvd_main(int argc, char **argv)
close(sock);
if (need_remote_ip)
- remote_addr = xmalloc_sockaddr2dotted(&remote.sa, sa_len);
+ remote_addr = xmalloc_sockaddr2dotted(&remote.sa);
if (need_hostnames) {
if (option_mask32 & OPT_h) {
- remote_hostname = xmalloc_sockaddr2host_noport(&remote.sa, sa_len);
+ remote_hostname = xmalloc_sockaddr2host_noport(&remote.sa);
if (!remote_hostname) {
bb_error_msg("warning: cannot look up hostname for %s", remote_addr);
remote_hostname = (char*)"";
@@ -397,9 +397,9 @@ int tcpudpsvd_main(int argc, char **argv)
local.len = sa_len;
getsockname(0, &local.sa, &local.len);
}
- local_addr = xmalloc_sockaddr2dotted(&local.sa, sa_len);
+ local_addr = xmalloc_sockaddr2dotted(&local.sa);
if (!local_hostname) {
- local_hostname = xmalloc_sockaddr2host_noport(&local.sa, sa_len);
+ local_hostname = xmalloc_sockaddr2host_noport(&local.sa);
if (!local_hostname)
bb_error_msg_and_die("warning: cannot look up hostname for %s"+9, local_addr);
}
@@ -426,7 +426,7 @@ int tcpudpsvd_main(int argc, char **argv)
* an outbond connection to local handler, and it needs
* to know where it originally tried to connect */
if (tcp && getsockopt(0, SOL_IP, SO_ORIGINAL_DST, &lsa->sa, &lsa->len) == 0) {
- char *addr = xmalloc_sockaddr2dotted(&lsa->sa, sa_len);
+ char *addr = xmalloc_sockaddr2dotted(&lsa->sa);
xsetenv("TCPORIGDSTADDR", addr);
free(addr);
}
diff --git a/libbb/xconnect.c b/libbb/xconnect.c
index b90aa9add..cb5ac2c8e 100644
--- a/libbb/xconnect.c
+++ b/libbb/xconnect.c
@@ -9,9 +9,9 @@
#include <netinet/in.h>
#include "libbb.h"
-int setsockopt_reuseaddr(int fd)
+void setsockopt_reuseaddr(int fd)
{
- return setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &const_int_1, sizeof(const_int_1));
+ setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &const_int_1, sizeof(const_int_1));
}
int setsockopt_broadcast(int fd)
{
@@ -298,11 +298,21 @@ int xconnect_stream(const len_and_sockaddr *lsa)
/* We hijack this constant to mean something else */
/* It doesn't hurt because we will add this bit anyway */
#define IGNORE_PORT NI_NUMERICSERV
-static char* sockaddr2str(const struct sockaddr *sa, socklen_t salen, int flags)
+static char* sockaddr2str(const struct sockaddr *sa, int flags)
{
char host[128];
char serv[16];
- int rc = getnameinfo(sa, salen,
+ int rc;
+ socklen_t salen;
+
+ salen = LSA_SIZEOF_SA;
+#if ENABLE_FEATURE_IPV6
+ if (sa->sa_family == AF_INET)
+ salen = sizeof(struct sockaddr_in);
+ if (sa->sa_family == AF_INET6)
+ salen = sizeof(struct sockaddr_in6);
+#endif
+ rc = getnameinfo(sa, salen,
host, sizeof(host),
/* can do ((flags & IGNORE_PORT) ? NULL : serv) but why bother? */
serv, sizeof(serv),
@@ -327,26 +337,26 @@ static char* sockaddr2str(const struct sockaddr *sa, socklen_t salen, int flags)
/*return xstrdup(host);*/
}
-char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen)
+char* xmalloc_sockaddr2host(const struct sockaddr *sa)
{
- return sockaddr2str(sa, salen, 0);
+ return sockaddr2str(sa, 0);
}
-char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa, socklen_t salen)
+char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa)
{
- return sockaddr2str(sa, salen, IGNORE_PORT);
+ return sockaddr2str(sa, IGNORE_PORT);
}
-char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa, socklen_t salen)
+char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa)
{
- return sockaddr2str(sa, salen, NI_NAMEREQD | IGNORE_PORT);
+ return sockaddr2str(sa, NI_NAMEREQD | IGNORE_PORT);
}
-char* xmalloc_sockaddr2dotted(const struct sockaddr *sa, socklen_t salen)
+char* xmalloc_sockaddr2dotted(const struct sockaddr *sa)
{
- return sockaddr2str(sa, salen, NI_NUMERICHOST);
+ return sockaddr2str(sa, NI_NUMERICHOST);
}
-char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa, socklen_t salen)
+char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa)
{
- return sockaddr2str(sa, salen, NI_NUMERICHOST | IGNORE_PORT);
+ return sockaddr2str(sa, NI_NUMERICHOST | IGNORE_PORT);
}
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 64061e4f0..5a1090eaf 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -169,13 +169,18 @@ int ndelay_off(int fd)
return fcntl(fd, F_SETFL, fcntl(fd,F_GETFL,0) & ~O_NONBLOCK);
}
+void xdup2(int from, int to)
+{
+ if (dup2(from, to) != to)
+ bb_perror_msg_and_die("can't duplicate file descriptor");
+}
+
// "Renumber" opened fd
void xmove_fd(int from, int to)
{
if (from == to)
return;
- if (dup2(from, to) != to)
- bb_perror_msg_and_die("can't duplicate file descriptor");
+ xdup2(from, to);
close(from);
}
diff --git a/loginutils/getty.c b/loginutils/getty.c
index 0254d3203..8b78856a2 100644
--- a/loginutils/getty.c
+++ b/loginutils/getty.c
@@ -226,12 +226,6 @@ static void parse_args(int argc, char **argv, struct options *op)
debug("exiting parseargs\n");
}
-static void xdup2(int srcfd, int dstfd, const char *tty)
-{
- if (dup2(srcfd, dstfd) == -1)
- bb_perror_msg_and_die("%s: dup", tty);
-}
-
/* open_tty - set up tty as standard { input, output, error } */
static void open_tty(const char *tty, struct termios *tp, int local)
{
@@ -255,7 +249,7 @@ static void open_tty(const char *tty, struct termios *tp, int local)
debug("open(2)\n");
fd = xopen(tty, O_RDWR | O_NONBLOCK);
- xdup2(fd, 0, tty);
+ xdup2(fd, 0);
while (fd > 2) close(fd--);
} else {
/*
@@ -269,8 +263,8 @@ static void open_tty(const char *tty, struct termios *tp, int local)
/* Replace current standard output/error fd's with new ones */
debug("duping\n");
- xdup2(0, 1, tty);
- xdup2(0, 2, tty);
+ xdup2(0, 1);
+ xdup2(0, 2);
/*
* The following ioctl will fail if stdin is not a tty, but also when
diff --git a/networking/dnsd.c b/networking/dnsd.c
index 32166e555..672b729e0 100644
--- a/networking/dnsd.c
+++ b/networking/dnsd.c
@@ -375,7 +375,7 @@ int dnsd_main(int argc, char **argv)
xbind(udps, &lsa->sa, lsa->len);
/* xlisten(udps, 50); - ?!! DGRAM sockets are never listened on I think? */
bb_info_msg("Accepting UDP packets on %s",
- xmalloc_sockaddr2dotted(&lsa->sa, lsa->len));
+ xmalloc_sockaddr2dotted(&lsa->sa));
while (1) {
int r;
diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
index f3d6009dd..255e413cb 100644
--- a/networking/ftpgetput.c
+++ b/networking/ftpgetput.c
@@ -348,7 +348,7 @@ int ftpgetput_main(int argc, char **argv)
server->lsa = xhost2sockaddr(argv[0], bb_lookup_port(port, "tcp", 21));
if (verbose_flag) {
printf("Connecting to %s (%s)\n", argv[0],
- xmalloc_sockaddr2dotted(&server->lsa->sa, server->lsa->len));
+ xmalloc_sockaddr2dotted(&server->lsa->sa));
}
/* Connect/Setup/Configure the FTP session */
diff --git a/networking/inetd.c b/networking/inetd.c
index 211a8dcbf..a7517ebdf 100644
--- a/networking/inetd.c
+++ b/networking/inetd.c
@@ -453,8 +453,7 @@ static void setup(servtab_t *sep)
bb_perror_msg("%s/%s: socket", sep->se_service, sep->se_proto);
return;
}
- if (setsockopt_reuseaddr(sep->se_fd) < 0)
- bb_perror_msg("setsockopt(SO_REUSEADDR)");
+ setsockopt_reuseaddr(sep->se_fd);
#if ENABLE_FEATURE_INETD_RPC
if (isrpcservice(sep)) {
diff --git a/networking/nc_bloaty.c b/networking/nc_bloaty.c
index 0d1071499..30abb3c1c 100644
--- a/networking/nc_bloaty.c
+++ b/networking/nc_bloaty.c
@@ -278,7 +278,7 @@ static void dolisten(void)
rr = getsockname(netfd, &ouraddr->sa, &ouraddr->len);
if (rr < 0)
bb_perror_msg_and_die("getsockname after bind");
- addr = xmalloc_sockaddr2dotted(&ouraddr->sa, ouraddr->len);
+ addr = xmalloc_sockaddr2dotted(&ouraddr->sa);
fprintf(stderr, "listening on %s ...\n", addr);
free(addr);
}
@@ -341,7 +341,7 @@ create new one, and bind() it. TODO */
/* nc 1.10 bails out instead, and its error message
* is not suppressed by o_verbose */
if (o_verbose) {
- char *remaddr = xmalloc_sockaddr2dotted(&remend.sa, remend.len);
+ char *remaddr = xmalloc_sockaddr2dotted(&remend.sa);
bb_error_msg("connect from wrong ip/port %s ignored", remaddr);
free(remaddr);
}
@@ -393,9 +393,9 @@ create new one, and bind() it. TODO */
accept the connection and then reject undesireable ones by closing.
In other words, we need a TCP MSG_PEEK. */
/* bbox: removed most of it */
- lcladdr = xmalloc_sockaddr2dotted(&ouraddr->sa, ouraddr->len);
- remaddr = xmalloc_sockaddr2dotted(&remend.sa, remend.len);
- remhostname = o_nflag ? remaddr : xmalloc_sockaddr2host(&remend.sa, remend.len);
+ lcladdr = xmalloc_sockaddr2dotted(&ouraddr->sa);
+ remaddr = xmalloc_sockaddr2dotted(&remend.sa);
+ remhostname = o_nflag ? remaddr : xmalloc_sockaddr2host(&remend.sa);
fprintf(stderr, "connect to %s from %s (%s)\n",
lcladdr, remhostname, remaddr);
free(lcladdr);
@@ -796,7 +796,7 @@ int nc_main(int argc, char **argv)
remend = *themaddr;
if (o_verbose)
- themdotted = xmalloc_sockaddr2dotted(&themaddr->sa, themaddr->len);
+ themdotted = xmalloc_sockaddr2dotted(&themaddr->sa);
x = connect_w_timeout(netfd);
if (o_zero && x == 0 && o_udpmode) /* if UDP scanning... */
diff --git a/networking/netstat.c b/networking/netstat.c
index 014e5e251..9fd3d2f86 100644
--- a/networking/netstat.c
+++ b/networking/netstat.c
@@ -140,8 +140,8 @@ static char *ip_port_str(struct sockaddr *addr, int port, const char *proto, int
/* Code which used "*" for INADDR_ANY is removed: it's ambiguous in IPv6,
* while "0.0.0.0" is not. */
- host = numeric ? xmalloc_sockaddr2dotted_noport(addr, salen)
- : xmalloc_sockaddr2host_noport(addr, salen);
+ host = numeric ? xmalloc_sockaddr2dotted_noport(addr)
+ : xmalloc_sockaddr2host_noport(addr);
host_port = xasprintf("%s:%s", host, get_sname(htons(port), proto, numeric));
free(host);
diff --git a/networking/nslookup.c b/networking/nslookup.c
index 608e65462..0036d0d17 100644
--- a/networking/nslookup.c
+++ b/networking/nslookup.c
@@ -72,8 +72,8 @@ static int print_host(const char *hostname, const char *header)
// printf("%s\n", cur->ai_canonname); ?
while (cur) {
char *dotted, *revhost;
- dotted = xmalloc_sockaddr2dotted_noport(cur->ai_addr, cur->ai_addrlen);
- revhost = xmalloc_sockaddr2hostonly_noport(cur->ai_addr, cur->ai_addrlen);
+ dotted = xmalloc_sockaddr2dotted_noport(cur->ai_addr);
+ revhost = xmalloc_sockaddr2hostonly_noport(cur->ai_addr);
printf("Address %u: %s%c", ++cnt, dotted, revhost ? ' ' : '\n');
if (revhost) {
@@ -102,8 +102,7 @@ static void server_print(void)
{
char *server;
- server = xmalloc_sockaddr2dotted_noport((struct sockaddr*)&_res.nsaddr_list[0],
- sizeof(struct sockaddr_in));
+ server = xmalloc_sockaddr2dotted_noport((struct sockaddr*)&_res.nsaddr_list[0]);
/* I honestly don't know what to do if DNS server has _IPv6 address_.
* Probably it is listed in
* _res._u._ext_.nsaddrs[MAXNS] (of type "struct sockaddr_in6*" each)
diff --git a/networking/ping.c b/networking/ping.c
index 127474ccc..d1a413dd3 100644
--- a/networking/ping.c
+++ b/networking/ping.c
@@ -664,7 +664,7 @@ static void ping(len_and_sockaddr *lsa)
printf("PING %s (%s)", hostname, dotted);
if (source_lsa) {
printf(" from %s",
- xmalloc_sockaddr2dotted_noport(&source_lsa->sa, source_lsa->len));
+ xmalloc_sockaddr2dotted_noport(&source_lsa->sa));
}
printf(": %d data bytes\n", datalen);
@@ -715,7 +715,7 @@ int ping_main(int argc, char **argv)
/* leaking it here... */
source_lsa = NULL;
- dotted = xmalloc_sockaddr2dotted_noport(&lsa->sa, lsa->len);
+ dotted = xmalloc_sockaddr2dotted_noport(&lsa->sa);
ping(lsa);
pingstats(0);
return EXIT_SUCCESS;
diff --git a/networking/tftp.c b/networking/tftp.c
index 85d1a857f..030c0116e 100644
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -443,7 +443,7 @@ int tftp_main(int argc, char **argv)
#if ENABLE_DEBUG_TFTP
fprintf(stderr, "using server '%s', remotefile '%s', localfile '%s'\n",
- xmalloc_sockaddr2dotted(&peer_lsa->sa, peer_lsa->len),
+ xmalloc_sockaddr2dotted(&peer_lsa->sa),
remotefile, localfile);
#endif
diff --git a/networking/traceroute.c b/networking/traceroute.c
index 20f304d53..0923d97dc 100644
--- a/networking/traceroute.c
+++ b/networking/traceroute.c
@@ -812,7 +812,7 @@ print_inetname(struct sockaddr_in *from)
else {
char *n = NULL;
if (from->sin_addr.s_addr != INADDR_ANY)
- n = xmalloc_sockaddr2host_noport((struct sockaddr*)from, sizeof(*from));
+ n = xmalloc_sockaddr2host_noport((struct sockaddr*)from);
printf(" %s (%s)", (n ? n : ina), ina);
free(n);
}
diff --git a/networking/udhcp/common.h b/networking/udhcp/common.h
index bc21176a5..33417af09 100644
--- a/networking/udhcp/common.h
+++ b/networking/udhcp/common.h
@@ -83,7 +83,7 @@ int udhcp_sp_fd_set(fd_set *rfds, int extra_fd);
int udhcp_sp_read(fd_set *rfds);
int raw_socket(int ifindex);
int read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t *arp);
-int listen_socket(uint32_t ip, int port, const char *inf);
+int listen_socket(/*uint32_t ip,*/ int port, const char *inf);
/* Returns 1 if no reply received */
int arpping(uint32_t test_ip, uint32_t from_ip, uint8_t *from_mac, const char *interface);
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index 7d38742b9..f0a3351fd 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -311,7 +311,7 @@ int udhcpc_main(int argc, char **argv)
if (listen_mode != LISTEN_NONE && sockfd < 0) {
if (listen_mode == LISTEN_KERNEL)
- sockfd = listen_socket(INADDR_ANY, CLIENT_PORT, client_config.interface);
+ sockfd = listen_socket(/*INADDR_ANY,*/ CLIENT_PORT, client_config.interface);
else
sockfd = raw_socket(client_config.ifindex);
}
diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c
index fb42e2f73..2fd16ce9b 100644
--- a/networking/udhcp/dhcpd.c
+++ b/networking/udhcp/dhcpd.c
@@ -95,7 +95,7 @@ int udhcpd_main(int argc, char **argv)
while (1) { /* loop until universe collapses */
if (server_socket < 0) {
- server_socket = listen_socket(INADDR_ANY, SERVER_PORT,
+ server_socket = listen_socket(/*INADDR_ANY,*/ SERVER_PORT,
server_config.interface);
}
diff --git a/networking/udhcp/dhcprelay.c b/networking/udhcp/dhcprelay.c
index 4ed65a2d6..3e1758d5c 100644
--- a/networking/udhcp/dhcprelay.c
+++ b/networking/udhcp/dhcprelay.c
@@ -167,16 +167,17 @@ static int init_sockets(char **client, int num_clients,
int i;
/* talk to real server on bootps */
- fds[0] = listen_socket(htonl(INADDR_ANY), 67, server);
+ fds[0] = listen_socket(/*INADDR_ANY,*/ 67, server);
*max_socket = fds[0];
/* array starts at 1 since server is 0 */
num_clients++;
- for (i=1; i < num_clients; i++) {
+ for (i = 1; i < num_clients; i++) {
/* listen for clients on bootps */
- fds[i] = listen_socket(htonl(INADDR_ANY), 67, client[i-1]);
- if (fds[i] > *max_socket) *max_socket = fds[i];
+ fds[i] = listen_socket(/*NADDR_ANY,*/ 67, client[i-1]);
+ if (fds[i] > *max_socket)
+ *max_socket = fds[i];
}
return i;
diff --git a/networking/udhcp/packet.c b/networking/udhcp/packet.c
index 272e79df1..41cd32135 100644
--- a/networking/udhcp/packet.c
+++ b/networking/udhcp/packet.c
@@ -194,17 +194,14 @@ int udhcp_kernel_packet(struct dhcpMessage *payload,
if (fd < 0)
return -1;
- if (setsockopt_reuseaddr(fd) == -1) {
- close(fd);
- return -1;
- }
+ setsockopt_reuseaddr(fd);
memset(&client, 0, sizeof(client));
client.sin_family = AF_INET;
client.sin_port = htons(source_port);
client.sin_addr.s_addr = source_ip;
- if (bind(fd, (struct sockaddr *)&client, sizeof(struct sockaddr)) == -1) {
+ if (bind(fd, (struct sockaddr *)&client, sizeof(client)) == -1) {
close(fd);
return -1;
}
diff --git a/networking/udhcp/socket.c b/networking/udhcp/socket.c
index 1e62f8e40..79ddfb1e2 100644
--- a/networking/udhcp/socket.c
+++ b/networking/udhcp/socket.c
@@ -45,10 +45,6 @@ int read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t
memset(&ifr, 0, sizeof(ifr));
fd = xsocket(AF_INET, SOCK_RAW, IPPROTO_RAW);
-// if (fd < 0) {
-// bb_perror_msg("socket failed");
-// return -1;
-// }
ifr.ifr_addr.sa_family = AF_INET;
strncpy(ifr.ifr_name, interface, sizeof(ifr.ifr_name));
@@ -87,40 +83,30 @@ int read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t
return 0;
}
-
-int listen_socket(uint32_t ip, int port, const char *inf)
+/* 1. None of the callers expects it to ever fail */
+/* 2. ip was always INADDR_ANY */
+int listen_socket(/*uint32_t ip,*/ int port, const char *inf)
{
- struct ifreq interface;
int fd;
+ struct ifreq interface;
struct sockaddr_in addr;
DEBUG("Opening listen socket on 0x%08x:%d %s", ip, port, inf);
fd = xsocket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
- memset(&addr, 0, sizeof(addr));
- addr.sin_family = AF_INET;
- addr.sin_port = htons(port);
- addr.sin_addr.s_addr = ip;
-
- if (setsockopt_reuseaddr(fd) == -1) {
- close(fd);
- return -1;
- }
- if (setsockopt_broadcast(fd) == -1) {
- close(fd);
- return -1;
- }
+ setsockopt_reuseaddr(fd);
+ if (setsockopt_broadcast(fd) == -1)
+ bb_perror_msg_and_die("SO_BROADCAST");
strncpy(interface.ifr_name, inf, IFNAMSIZ);
- if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &interface, sizeof(interface)) < 0) {
- close(fd);
- return -1;
- }
+ if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &interface, sizeof(interface)) == -1)
+ bb_perror_msg_and_die("SO_BINDTODEVICE");
- if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
- close(fd);
- return -1;
- }
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(port);
+ /* addr.sin_addr.s_addr = ip; - all-zeros is INADDR_ANY */
+ xbind(fd, (struct sockaddr *)&addr, sizeof(addr));
return fd;
}
diff --git a/networking/wget.c b/networking/wget.c
index d90368c40..3e61ea656 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -236,7 +236,7 @@ int wget_main(int argc, char **argv)
lsa = xhost2sockaddr(server.host, server.port);
if (!(opt & WGET_OPT_QUIET)) {
fprintf(stderr, "Connecting to %s (%s)\n", server.host,
- xmalloc_sockaddr2dotted(&lsa->sa, lsa->len));
+ xmalloc_sockaddr2dotted(&lsa->sa));
/* We leak result of xmalloc_sockaddr2dotted */
}
diff --git a/runit/runsv.c b/runit/runsv.c
index 20f849528..f70b51390 100644
--- a/runit/runsv.c
+++ b/runit/runsv.c
@@ -313,14 +313,11 @@ static void startservice(struct svdir *s)
/* child */
if (haslog) {
if (s->islog) {
- if (dup2(logpipe[0], 0) == -1)
- fatal_cannot("setup filedescriptor for ./log/run");
+ xdup2(logpipe[0], 0);
close(logpipe[1]);
- if (chdir("./log") == -1)
- fatal_cannot("change directory to ./log");
+ xchdir("./log");
} else {
- if (dup2(logpipe[1], 1) == -1)
- fatal_cannot("setup filedescriptor for ./run");
+ xdup2(logpipe[1], 1);
close(logpipe[0]);
}
}
diff --git a/util-linux/mount.c b/util-linux/mount.c
index c159f41e1..bd7ecc258 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -1413,7 +1413,7 @@ static int singlemount(struct mntent *mp, int ignore_busy)
// insert ip=... option into string flags.
- dotted = xmalloc_sockaddr2dotted_noport(&lsa->sa, lsa->len);
+ dotted = xmalloc_sockaddr2dotted_noport(&lsa->sa);
ip = xasprintf("ip=%s", dotted);
parse_mount_options(ip, &filteropts);
--
cgit v1.2.3-55-g6feb