Example #1
0
int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
	static const char keywords[] ALIGN1 =
		"addbr\0" "delbr\0" "addif\0" "delif\0"
	USE_FEATURE_BRCTL_FANCY(
		"stp\0"
		"setageing\0" "setfd\0" "sethello\0" "setmaxage\0"
		"setpathcost\0" "setportprio\0" "setbridgeprio\0"
	)
	USE_FEATURE_BRCTL_SHOW("showmacs\0" "show\0");

	enum { ARG_addbr = 0, ARG_delbr, ARG_addif, ARG_delif
		USE_FEATURE_BRCTL_FANCY(,
		   ARG_stp,
		   ARG_setageing, ARG_setfd, ARG_sethello, ARG_setmaxage,
		   ARG_setpathcost, ARG_setportprio, ARG_setbridgeprio
		)
		USE_FEATURE_BRCTL_SHOW(, ARG_showmacs, ARG_show)
	};

	int fd;
	smallint key;
	struct ifreq ifr;
	char *br, *brif;

	argv++;
	while (*argv) {
#if ENABLE_FEATURE_BRCTL_FANCY
		int ifidx[MAX_PORTS];
		unsigned long args[4];
		ifr.ifr_data = (char *) &args;
#endif

		key = index_in_strings(keywords, *argv);
		if (key == -1) /* no match found in keywords array, bail out. */
			bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
		argv++;
		fd = xsocket(AF_INET, SOCK_STREAM, 0);

#if ENABLE_FEATURE_BRCTL_SHOW
		if (key == ARG_show) { /* show */
			char brname[IFNAMSIZ];
			int bridx[MAX_PORTS];
			int i, num;
			arm_ioctl(args, BRCTL_GET_BRIDGES,
						(unsigned long) bridx, MAX_PORTS);
			num = xioctl(fd, SIOCGIFBR, args);
			printf("bridge name\tbridge id\t\tSTP enabled\tinterfaces\n");
			for (i = 0; i < num; i++) {
				char ifname[IFNAMSIZ];
				int j, tabs;
				struct __bridge_info bi;
				unsigned char *x;

				if (!if_indextoname(bridx[i], brname))
					bb_perror_msg_and_die("can't get bridge name for index %d", i);
				strncpy(ifr.ifr_name, brname, IFNAMSIZ);

				arm_ioctl(args, BRCTL_GET_BRIDGE_INFO,
							(unsigned long) &bi, 0);
				xioctl(fd, SIOCDEVPRIVATE, &ifr);
				printf("%s\t\t", brname);

				/* print bridge id */
				x = (unsigned char *) &bi.bridge_id;
				for (j = 0; j < 8; j++) {
					printf("%.2x", x[j]);
					if (j == 1)
						bb_putchar('.');
				}
				printf(bi.stp_enabled ? "\tyes" : "\tno");

				/* print interface list */
				arm_ioctl(args, BRCTL_GET_PORT_LIST,
							(unsigned long) ifidx, MAX_PORTS);
				xioctl(fd, SIOCDEVPRIVATE, &ifr);
				tabs = 0;
				for (j = 0; j < MAX_PORTS; j++) {
					if (!ifidx[j])
						continue;
					if (!if_indextoname(ifidx[j], ifname))
						bb_perror_msg_and_die("can't get interface name for index %d", j);
					if (tabs)
						printf("\t\t\t\t\t");
					else
						tabs = 1;
					printf("\t\t%s\n", ifname);
				}
				if (!tabs)	/* bridge has no interfaces */
					bb_putchar('\n');
			}
			goto done;
		}
#endif

		if (!*argv) /* all but 'show' need at least one argument */
			bb_show_usage();

		br = *argv++;

		if (key == ARG_addbr || key == ARG_delbr) { /* addbr or delbr */
			ioctl_or_perror_and_die(fd,
					key == ARG_addbr ? SIOCBRADDBR : SIOCBRDELBR,
					br, "bridge %s", br);
			goto done;
		}

		if (!*argv) /* all but 'addif/delif' need at least two arguments */
			bb_show_usage();

		strncpy(ifr.ifr_name, br, IFNAMSIZ);
		if (key == ARG_addif || key == ARG_delif) { /* addif or delif */
			brif = *argv;
			ifr.ifr_ifindex = if_nametoindex(brif);
			if (!ifr.ifr_ifindex) {
				bb_perror_msg_and_die("iface %s", brif);
			}
			ioctl_or_perror_and_die(fd,
					key == ARG_addif ? SIOCBRADDIF : SIOCBRDELIF,
					&ifr, "bridge %s", br);
			goto done_next_argv;
		}
#if ENABLE_FEATURE_BRCTL_FANCY
		if (key == ARG_stp) { /* stp */
			/* FIXME: parsing yes/y/on/1 versus no/n/off/0 is too involved */
			arm_ioctl(args, BRCTL_SET_BRIDGE_STP_STATE,
					  (unsigned)(**argv - '0'), 0);
			goto fire;
		}
		if ((unsigned)(key - ARG_setageing) < 4) { /* time related ops */
			static const uint8_t ops[] ALIGN1 = {
				BRCTL_SET_AGEING_TIME,          /* ARG_setageing */
				BRCTL_SET_BRIDGE_FORWARD_DELAY, /* ARG_setfd     */
				BRCTL_SET_BRIDGE_HELLO_TIME,    /* ARG_sethello  */
				BRCTL_SET_BRIDGE_MAX_AGE        /* ARG_setmaxage */
			};
			arm_ioctl(args, ops[key - ARG_setageing], str_to_jiffies(*argv), 0);
			goto fire;
		}
		if (key == ARG_setpathcost
		 || key == ARG_setportprio
		 || key == ARG_setbridgeprio
		) {
			static const uint8_t ops[] ALIGN1 = {
				BRCTL_SET_PATH_COST,      /* ARG_setpathcost   */
				BRCTL_SET_PORT_PRIORITY,  /* ARG_setportprio   */
				BRCTL_SET_BRIDGE_PRIORITY /* ARG_setbridgeprio */
			};
			int port = -1;
			unsigned arg1, arg2;

			if (key != ARG_setbridgeprio) {
				/* get portnum */
				unsigned i;

				port = if_nametoindex(*argv++);
				if (!port)
					bb_error_msg_and_die(bb_msg_invalid_arg, *argv, "port");
				memset(ifidx, 0, sizeof ifidx);
				arm_ioctl(args, BRCTL_GET_PORT_LIST, (unsigned long)ifidx,
						  MAX_PORTS);
				xioctl(fd, SIOCDEVPRIVATE, &ifr);
				for (i = 0; i < MAX_PORTS; i++) {
					if (ifidx[i] == port) {
						port = i;
						break;
					}
				}
			}
			arg1 = port;
			arg2 = xatoi_u(*argv);
			if (key == ARG_setbridgeprio) {
				arg1 = arg2;
				arg2 = 0;
			}
			arm_ioctl(args, ops[key - ARG_setpathcost], arg1, arg2);
		}
 fire:
		/* Execute the previously set command */
		xioctl(fd, SIOCDEVPRIVATE, &ifr);
#endif
 done_next_argv:
		argv++;
 done:
		close(fd);
	}

	return EXIT_SUCCESS;
}
Example #2
0
int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
    static const char keywords[] ALIGN1 =
        "addbr\0" "delbr\0" "addif\0" "delif\0"
        USE_FEATURE_BRCTL_FANCY(
            "stp\0"
            "setageing\0" "setfd\0" "sethello\0" "setmaxage\0"
            "setpathcost\0" "setportprio\0" "setbridgeprio\0"
        )
        USE_FEATURE_BRCTL_SHOW("showmacs\0" "show\0");

    enum { ARG_addbr = 0, ARG_delbr, ARG_addif, ARG_delif
           USE_FEATURE_BRCTL_FANCY(,
                                   ARG_stp,
                                   ARG_setageing, ARG_setfd, ARG_sethello, ARG_setmaxage,
                                   ARG_setpathcost, ARG_setportprio, ARG_setbridgeprio
                                  )
           USE_FEATURE_BRCTL_SHOW(, ARG_showmacs, ARG_show)
         };

    int fd;
    smallint key;
    struct ifreq ifr;
    char *br, *brif;
#if ENABLE_FEATURE_BRCTL_FANCY
    unsigned long args[4] = {0, 0, 0, 0};
    int port;
    int tmp;
#endif

    argv++;
    while (*argv) {
        key = index_in_strings(keywords, *argv);
        if (key == -1) /* no match found in keywords array, bail out. */
            bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
        argv++;
#if ENABLE_FEATURE_BRCTL_SHOW
        if (key == ARG_show) { /* show */
            goto out; /* FIXME: implement me! :) */
        }
#endif
        fd = xsocket(AF_INET, SOCK_STREAM, 0);
        br = *argv++;

        if (key == ARG_addbr || key == ARG_delbr) { /* addbr or delbr */
            ioctl_or_perror_and_die(fd,
                                    key == ARG_addbr ? SIOCBRADDBR : SIOCBRDELBR,
                                    br, "bridge %s", br);
            goto done;
        }
        if (!*argv) /* all but 'show' need at least one argument */
            bb_show_usage();
        safe_strncpy(ifr.ifr_name, br, IFNAMSIZ);
        if (key == ARG_addif || key == ARG_delif) { /* addif or delif */
            brif = *argv++;
            ifr.ifr_ifindex = if_nametoindex(brif);
            if (!ifr.ifr_ifindex) {
                bb_perror_msg_and_die("iface %s", brif);
            }
            ioctl_or_perror_and_die(fd,
                                    key == ARG_addif ? SIOCBRADDIF : SIOCBRDELIF,
                                    &ifr, "bridge %s", br);
            goto done;
        }
#if ENABLE_FEATURE_BRCTL_FANCY
        ifr.ifr_data = (char *) &args;
        if (key == ARG_stp) { /* stp */
            /* FIXME: parsing yes/y/on/1 versus no/n/off/0 is too involved */
            arm_ioctl(args, BRCTL_SET_BRIDGE_STP_STATE,
                      (unsigned)(**argv - '0'), 0);
            goto fire;
        }
        if ((unsigned)(key - ARG_stp) < 5) { /* time related ops */
            unsigned long op = (key == ARG_setageing) ? BRCTL_SET_AGEING_TIME :
                               (key == ARG_setfd) ? BRCTL_SET_BRIDGE_FORWARD_DELAY :
                               (key == ARG_sethello) ? BRCTL_SET_BRIDGE_HELLO_TIME :
                               /*key == ARG_setmaxage*/ BRCTL_SET_BRIDGE_MAX_AGE;
            arm_ioctl(args, op, str_to_jiffies(*argv), 0);
            goto fire;
        }
        port = -1;
        if (key == ARG_setpathcost || key == ARG_setportprio) {/* get portnum */
            int ifidx[MAX_PORTS];
            unsigned i;

            port = if_nametoindex(*argv);
            if (!port)
                bb_error_msg_and_die(bb_msg_invalid_arg, *argv, "port");
            argv++;
            memset(ifidx, 0, sizeof ifidx);
            arm_ioctl(args, BRCTL_GET_PORT_LIST, (unsigned long)ifidx,
                      MAX_PORTS);
            xioctl(fd, SIOCDEVPRIVATE, &ifr);
            for (i = 0; i < MAX_PORTS; i++) {
                if (ifidx[i] == port) {
                    port = i;
                    break;
                }
            }
        }
        if (key == ARG_setpathcost
                || key == ARG_setportprio
                || key == ARG_setbridgeprio
           ) {
            unsigned long op = (key == ARG_setpathcost) ? BRCTL_SET_PATH_COST :
                               (key == ARG_setportprio) ? BRCTL_SET_PORT_PRIORITY :
                               /*key == ARG_setbridgeprio*/ BRCTL_SET_BRIDGE_PRIORITY;
            unsigned long arg1 = port;
            unsigned long arg2;
# if BRCTL_USE_INTERNAL
            tmp = xatoi(*argv);
# else
            if (sscanf(*argv, "%i", &tmp) != 1)
                bb_error_msg_and_die(bb_msg_invalid_arg, *argv,
                                     key == ARG_setpathcost ? "cost" : "prio");
# endif
            if (key == ARG_setbridgeprio) {
                arg1 = tmp;
                arg2 = 0;
            } else
                arg2 = tmp;
            arm_ioctl(args, op, arg1, arg2);
        }
fire:
        /* Execute the previously set command.  */
        xioctl(fd, SIOCDEVPRIVATE, &ifr);
        argv++;
#endif
done:
        if (ENABLE_FEATURE_CLEAN_UP)
            close(fd);
    }
    USE_FEATURE_BRCTL_SHOW(out:)
    return EXIT_SUCCESS;
}