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https://github.com/sheumann/hush.git
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ifenslave: fix improper longopts definition
ifenslave: shrink function old new delta set_hwaddr - 45 +45 set_ifrname_and_do_ioctl - 26 +26 set_mtu - 25 +25 ioctl_on_skfd - 13 +13 static.ifenslave_longopts 31 34 +3 set_if_up 39 36 -3 set_if_down 39 36 -3 set_if_flags 38 26 -12 static.ifra 32 16 -16 get_slave_flags 40 24 -16 get_if_settings 98 67 -31 set_slave_mtu 37 - -37 set_slave_hwaddr 52 - -52 set_master_hwaddr 52 - -52 ifenslave_main 1566 1411 -155 ------------------------------------------------------------------------------ (add/remove: 4/3 grow/shrink: 1/7 up/down: 112/-377) Total: -265 bytes text data bss dec hex filename 810002 624 7060 817686 c7a16 busybox_old 809737 624 7060 817421 c790d busybox_unstripped
This commit is contained in:
Denis Vlasenko
parent
dd6f570fa3
commit
0876822ded
@ -116,7 +116,7 @@ struct dev_data {
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};
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enum { skfd = 3 }; /* AF_INET socket for ioctl() calls.*/
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enum { skfd = 3 }; /* AF_INET socket for ioctl() calls. */
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struct globals {
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unsigned abi_ver; /* userland - kernel ABI version */
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smallint hwaddr_set; /* Master's hwaddr is set */
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@ -136,12 +136,11 @@ struct globals {
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static void get_drv_info(char *master_ifname);
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static int get_if_settings(char *ifname, struct dev_data *dd);
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static int get_slave_flags(char *slave_ifname);
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static int set_master_hwaddr(char *master_ifname, struct sockaddr *hwaddr);
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static int set_slave_hwaddr(char *slave_ifname, struct sockaddr *hwaddr);
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static int set_slave_mtu(char *slave_ifname, int mtu);
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static int set_if_flags(char *ifname, short flags);
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static int set_if_up(char *ifname, short flags);
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static int set_if_down(char *ifname, short flags);
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static int set_hwaddr(char *ifname, struct sockaddr *hwaddr);
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static int set_mtu(char *ifname, int mtu);
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static int set_if_flags(char *ifname, int flags);
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static int set_if_up(char *ifname, int flags);
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static int set_if_down(char *ifname, int flags);
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static int clear_if_addr(char *ifname);
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static int set_if_addr(char *master_ifname, char *slave_ifname);
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static void change_active(char *master_ifname, char *slave_ifname);
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@ -153,6 +152,17 @@ static void strncpy_IFNAMSIZ(char *dst, const char *src)
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strncpy(dst, src, IFNAMSIZ);
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}
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static int ioctl_on_skfd(unsigned request, struct ifreq *ifr)
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{
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return ioctl(skfd, request, ifr);
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}
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static int set_ifrname_and_do_ioctl(unsigned request, struct ifreq *ifr, const char *ifname)
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{
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strncpy_IFNAMSIZ(ifr->ifr_name, ifname);
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return ioctl_on_skfd(request, ifr);
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}
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int ifenslave_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
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{
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@ -167,10 +177,10 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
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};
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#if ENABLE_GETOPT_LONG
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static const char ifenslave_longopts[] ALIGN1 =
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"change-active" No_argument "c"
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"detach" No_argument "d"
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"force" No_argument "f"
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;
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"change-active\0" No_argument "c"
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"detach\0" No_argument "d"
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"force\0" No_argument "f"
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;
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applet_long_options = ifenslave_longopts;
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#endif
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@ -181,10 +191,9 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
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if (opt & (opt-1)) /* options check */
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bb_show_usage();
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/* Copy the interface name */
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master_ifname = *argv++;
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/* No remaining args means show all interfaces. */
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/* No interface names - show all interfaces. */
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if (!master_ifname) {
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display_interfaces(NULL);
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return EXIT_SUCCESS;
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@ -193,14 +202,16 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
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/* Open a basic socket */
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xmove_fd(xsocket(AF_INET, SOCK_DGRAM, 0), skfd);
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/* exchange abi version with bonding module */
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/* Exchange abi version with bonding module */
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get_drv_info(master_ifname);
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slave_ifname = *argv++;
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if (!slave_ifname) {
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if (opt & (OPT_d|OPT_c)) {
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display_interfaces(slave_ifname);
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return 2; /* why? */
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/* --change or --detach, and no slaves given -
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* show all interfaces. */
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display_interfaces(slave_ifname /* == NULL */);
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return 2; /* why 2? */
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}
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/* A single arg means show the
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* configuration for this interface
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@ -225,12 +236,11 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
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if (!(master.flags.ifr_flags & IFF_UP))
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bb_error_msg_and_die("%s is not up", master_ifname);
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/* Only for enslaving */
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if (!(opt & (OPT_c|OPT_d))) {
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sa_family_t master_family = master.hwaddr.ifr_hwaddr.sa_family;
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/* No opts: neither -c[hange] nor -d[etach] -> it's "enslave" then;
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* and -f[orce] is not there too */
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if (!opt) {
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/* The family '1' is ARPHRD_ETHER for ethernet. */
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if (master_family != 1 && !(opt & OPT_f)) {
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if (master.hwaddr.ifr_hwaddr.sa_family != 1) {
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bb_error_msg_and_die(
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"%s is not ethernet-like (-f overrides)",
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master_ifname);
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@ -240,8 +250,7 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
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/* Accepts only one slave */
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if (opt & OPT_c) {
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/* change active slave */
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res = get_slave_flags(slave_ifname);
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if (res) {
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if (get_slave_flags(slave_ifname)) {
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bb_perror_msg_and_die(
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"%s: can't get flags", slave_ifname);
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}
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@ -256,8 +265,8 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
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/* detach a slave interface from the master */
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rv = get_slave_flags(slave_ifname);
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if (rv) {
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/* Can't work with this slave. */
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/* remember the error and skip it*/
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/* Can't work with this slave, */
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/* remember the error and skip it */
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bb_perror_msg(
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"skipping %s: can't get flags",
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slave_ifname);
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@ -276,8 +285,8 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
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/* attach a slave interface to the master */
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rv = get_if_settings(slave_ifname, &slave);
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if (rv) {
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/* Can't work with this slave. */
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/* remember the error and skip it*/
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/* Can't work with this slave, */
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/* remember the error and skip it */
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bb_perror_msg(
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"skipping %s: can't get settings",
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slave_ifname);
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@ -308,14 +317,11 @@ static void get_drv_info(char *master_ifname)
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struct ethtool_drvinfo info;
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memset(&ifr, 0, sizeof(ifr));
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strncpy_IFNAMSIZ(ifr.ifr_name, master_ifname);
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ifr.ifr_data = (caddr_t)&info;
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info.cmd = ETHTOOL_GDRVINFO;
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strncpy(info.driver, "ifenslave", 32);
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snprintf(info.fw_version, 32, "%d", BOND_ABI_VERSION);
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if (ioctl(skfd, SIOCETHTOOL, &ifr) < 0) {
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if (set_ifrname_and_do_ioctl(SIOCETHTOOL, &ifr, master_ifname) < 0) {
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if (errno == EOPNOTSUPP)
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return;
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bb_perror_msg_and_die("%s: SIOCETHTOOL error", master_ifname);
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@ -324,8 +330,6 @@ static void get_drv_info(char *master_ifname)
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abi_ver = bb_strtou(info.fw_version, NULL, 0);
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if (errno)
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bb_error_msg_and_die("%s: SIOCETHTOOL error", master_ifname);
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return;
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}
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static void change_active(char *master_ifname, char *slave_ifname)
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@ -338,10 +342,9 @@ static void change_active(char *master_ifname, char *slave_ifname)
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slave_ifname);
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}
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strncpy_IFNAMSIZ(ifr.ifr_name, master_ifname);
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strncpy_IFNAMSIZ(ifr.ifr_slave, slave_ifname);
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if (ioctl(skfd, SIOCBONDCHANGEACTIVE, &ifr) < 0
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&& ioctl(skfd, BOND_CHANGE_ACTIVE_OLD, &ifr) < 0
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if (set_ifrname_and_do_ioctl(SIOCBONDCHANGEACTIVE, &ifr, master_ifname)
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&& ioctl_on_skfd(BOND_CHANGE_ACTIVE_OLD, &ifr)
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) {
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bb_perror_msg_and_die(
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"master %s, slave %s: can't "
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@ -384,7 +387,7 @@ static int enslave(char *master_ifname, char *slave_ifname)
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}
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if (master.mtu.ifr_mtu != slave.mtu.ifr_mtu) {
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res = set_slave_mtu(slave_ifname, master.mtu.ifr_mtu);
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res = set_mtu(slave_ifname, master.mtu.ifr_mtu);
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if (res) {
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bb_perror_msg("%s: can't set MTU", slave_ifname);
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return res;
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@ -400,9 +403,7 @@ static int enslave(char *master_ifname, char *slave_ifname)
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* the application sets the slave's
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* hwaddr
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*/
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res = set_slave_hwaddr(slave_ifname,
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&(master.hwaddr.ifr_hwaddr));
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if (res) {
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if (set_hwaddr(slave_ifname, &(master.hwaddr.ifr_hwaddr))) {
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bb_perror_msg("%s: can't set hw address",
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slave_ifname);
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goto undo_mtu;
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@ -411,8 +412,7 @@ static int enslave(char *master_ifname, char *slave_ifname)
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/* For old ABI the application needs to bring the
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* slave back up
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*/
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res = set_if_up(slave_ifname, slave.flags.ifr_flags);
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if (res)
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if (set_if_up(slave_ifname, slave.flags.ifr_flags))
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goto undo_slave_mac;
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}
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/* The driver is using a new ABI,
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@ -428,14 +428,11 @@ static int enslave(char *master_ifname, char *slave_ifname)
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/* For old ABI, the master needs to be
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* down before setting it's hwaddr
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*/
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res = set_if_down(master_ifname, master.flags.ifr_flags);
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if (res)
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if (set_if_down(master_ifname, master.flags.ifr_flags))
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goto undo_mtu;
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}
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res = set_master_hwaddr(master_ifname,
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&(slave.hwaddr.ifr_hwaddr));
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if (res) {
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if (set_hwaddr(master_ifname, &(slave.hwaddr.ifr_hwaddr))) {
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bb_error_msg("%s: can't set hw address",
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master_ifname);
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goto undo_mtu;
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@ -445,8 +442,7 @@ static int enslave(char *master_ifname, char *slave_ifname)
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/* For old ABI, bring the master
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* back up
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*/
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res = set_if_up(master_ifname, master.flags.ifr_flags);
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if (res)
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if (set_if_up(master_ifname, master.flags.ifr_flags))
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goto undo_master_mac;
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}
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@ -454,29 +450,26 @@ static int enslave(char *master_ifname, char *slave_ifname)
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}
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/* Do the real thing */
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strncpy_IFNAMSIZ(ifr.ifr_name, master_ifname);
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strncpy_IFNAMSIZ(ifr.ifr_slave, slave_ifname);
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if (ioctl(skfd, SIOCBONDENSLAVE, &ifr) < 0
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&& ioctl(skfd, BOND_ENSLAVE_OLD, &ifr) < 0
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if (set_ifrname_and_do_ioctl(SIOCBONDENSLAVE, &ifr, master_ifname)
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&& ioctl_on_skfd(BOND_ENSLAVE_OLD, &ifr)
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) {
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res = 1;
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}
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if (res)
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goto undo_master_mac;
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}
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return 0;
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/* rollback (best effort) */
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undo_master_mac:
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set_master_hwaddr(master_ifname, &(master.hwaddr.ifr_hwaddr));
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set_hwaddr(master_ifname, &(master.hwaddr.ifr_hwaddr));
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hwaddr_set = 0;
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goto undo_mtu;
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undo_slave_mac:
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set_slave_hwaddr(slave_ifname, &(slave.hwaddr.ifr_hwaddr));
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set_hwaddr(slave_ifname, &(slave.hwaddr.ifr_hwaddr));
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undo_mtu:
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set_slave_mtu(slave_ifname, slave.mtu.ifr_mtu);
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return res;
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set_mtu(slave_ifname, slave.mtu.ifr_mtu);
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return 1;
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}
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static int release(char *master_ifname, char *slave_ifname)
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@ -490,10 +483,9 @@ static int release(char *master_ifname, char *slave_ifname)
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return 1;
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}
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strncpy_IFNAMSIZ(ifr.ifr_name, master_ifname);
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strncpy_IFNAMSIZ(ifr.ifr_slave, slave_ifname);
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if (ioctl(skfd, SIOCBONDRELEASE, &ifr) < 0
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&& ioctl(skfd, BOND_RELEASE_OLD, &ifr) < 0
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if (set_ifrname_and_do_ioctl(SIOCBONDRELEASE, &ifr, master_ifname) < 0
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&& ioctl_on_skfd(BOND_RELEASE_OLD, &ifr) < 0
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) {
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return 1;
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}
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@ -505,7 +497,7 @@ static int release(char *master_ifname, char *slave_ifname)
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}
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/* set to default mtu */
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set_slave_mtu(slave_ifname, 1500);
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set_mtu(slave_ifname, 1500);
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return res;
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}
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@ -514,59 +506,43 @@ static int get_if_settings(char *ifname, struct dev_data *dd)
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{
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int res;
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strncpy_IFNAMSIZ(dd->mtu.ifr_name, ifname);
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res = ioctl(skfd, SIOCGIFMTU, &dd->mtu);
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strncpy_IFNAMSIZ(dd->flags.ifr_name, ifname);
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res |= ioctl(skfd, SIOCGIFFLAGS, &dd->flags);
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strncpy_IFNAMSIZ(dd->hwaddr.ifr_name, ifname);
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res |= ioctl(skfd, SIOCGIFHWADDR, &dd->hwaddr);
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res = set_ifrname_and_do_ioctl(SIOCGIFMTU, &dd->mtu, ifname);
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res |= set_ifrname_and_do_ioctl(SIOCGIFFLAGS, &dd->flags, ifname);
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res |= set_ifrname_and_do_ioctl(SIOCGIFHWADDR, &dd->hwaddr, ifname);
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return res;
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}
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static int get_slave_flags(char *slave_ifname)
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{
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strncpy_IFNAMSIZ(slave.flags.ifr_name, slave_ifname);
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return ioctl(skfd, SIOCGIFFLAGS, &slave.flags);
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return set_ifrname_and_do_ioctl(SIOCGIFFLAGS, &slave.flags, slave_ifname);
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}
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static int set_master_hwaddr(char *master_ifname, struct sockaddr *hwaddr)
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static int set_hwaddr(char *ifname, struct sockaddr *hwaddr)
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{
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struct ifreq ifr;
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strncpy_IFNAMSIZ(ifr.ifr_name, master_ifname);
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memcpy(&(ifr.ifr_hwaddr), hwaddr, sizeof(struct sockaddr));
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return ioctl(skfd, SIOCSIFHWADDR, &ifr);
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memcpy(&(ifr.ifr_hwaddr), hwaddr, sizeof(*hwaddr));
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return set_ifrname_and_do_ioctl(SIOCSIFHWADDR, &ifr, ifname);
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}
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static int set_slave_hwaddr(char *slave_ifname, struct sockaddr *hwaddr)
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{
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struct ifreq ifr;
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strncpy_IFNAMSIZ(ifr.ifr_name, slave_ifname);
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memcpy(&(ifr.ifr_hwaddr), hwaddr, sizeof(struct sockaddr));
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return ioctl(skfd, SIOCSIFHWADDR, &ifr);
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}
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static int set_slave_mtu(char *slave_ifname, int mtu)
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static int set_mtu(char *ifname, int mtu)
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{
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struct ifreq ifr;
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ifr.ifr_mtu = mtu;
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strncpy_IFNAMSIZ(ifr.ifr_name, slave_ifname);
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return ioctl(skfd, SIOCSIFMTU, &ifr);
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return set_ifrname_and_do_ioctl(SIOCSIFMTU, &ifr, ifname);
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}
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static int set_if_flags(char *ifname, short flags)
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static int set_if_flags(char *ifname, int flags)
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{
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struct ifreq ifr;
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ifr.ifr_flags = flags;
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strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
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return ioctl(skfd, SIOCSIFFLAGS, &ifr);
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return set_ifrname_and_do_ioctl(SIOCSIFFLAGS, &ifr, ifname);
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}
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static int set_if_up(char *ifname, short flags)
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static int set_if_up(char *ifname, int flags)
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{
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int res = set_if_flags(ifname, flags | IFF_UP);
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if (res)
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@ -574,7 +550,7 @@ static int set_if_up(char *ifname, short flags)
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return res;
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}
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static int set_if_down(char *ifname, short flags)
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static int set_if_down(char *ifname, int flags)
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{
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int res = set_if_flags(ifname, flags & ~IFF_UP);
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if (res)
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@ -586,17 +562,24 @@ static int clear_if_addr(char *ifname)
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{
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struct ifreq ifr;
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strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
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ifr.ifr_addr.sa_family = AF_INET;
|
||||
memset(ifr.ifr_addr.sa_data, 0, sizeof(ifr.ifr_addr.sa_data));
|
||||
return ioctl(skfd, SIOCSIFADDR, &ifr);
|
||||
return set_ifrname_and_do_ioctl(SIOCSIFADDR, &ifr, ifname);
|
||||
}
|
||||
|
||||
static int set_if_addr(char *master_ifname, char *slave_ifname)
|
||||
{
|
||||
#if (SIOCGIFADDR | SIOCSIFADDR \
|
||||
| SIOCGIFDSTADDR | SIOCSIFDSTADDR \
|
||||
| SIOCGIFBRDADDR | SIOCSIFBRDADDR \
|
||||
| SIOCGIFNETMASK | SIOCSIFNETMASK) <= 0xffff
|
||||
#define INT uint16_t
|
||||
#else
|
||||
#define INT int
|
||||
#endif
|
||||
static const struct {
|
||||
int g_ioctl;
|
||||
int s_ioctl;
|
||||
INT g_ioctl;
|
||||
INT s_ioctl;
|
||||
} ifra[] = {
|
||||
{ SIOCGIFADDR, SIOCSIFADDR },
|
||||
{ SIOCGIFDSTADDR, SIOCSIFDSTADDR },
|
||||
@ -609,16 +592,14 @@ static int set_if_addr(char *master_ifname, char *slave_ifname)
|
||||
unsigned i;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(ifra); i++) {
|
||||
strncpy_IFNAMSIZ(ifr.ifr_name, master_ifname);
|
||||
res = ioctl(skfd, ifra[i].g_ioctl, &ifr);
|
||||
res = set_ifrname_and_do_ioctl(ifra[i].g_ioctl, &ifr, master_ifname);
|
||||
if (res < 0) {
|
||||
ifr.ifr_addr.sa_family = AF_INET;
|
||||
memset(ifr.ifr_addr.sa_data, 0,
|
||||
sizeof(ifr.ifr_addr.sa_data));
|
||||
}
|
||||
|
||||
strncpy_IFNAMSIZ(ifr.ifr_name, slave_ifname);
|
||||
res = ioctl(skfd, ifra[i].s_ioctl, &ifr);
|
||||
res = set_ifrname_and_do_ioctl(ifra[i].s_ioctl, &ifr, slave_ifname);
|
||||
if (res < 0)
|
||||
return res;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user