mirror of
https://github.com/sheumann/hush.git
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------------------------------------------------------------------------ r15465 | aldot | 2006-06-21 20:48:06 +0200 (Wed, 21 Jun 2006) | 3 lines - use CONFIG_BUSYBOX_EXEC_PATH as before it one was broken by a recent revert. - use xchdir() since all is invain if it fails there anyways, supposedly ------------------------------------------------------------------------ r15466 | aldot | 2006-06-21 20:55:16 +0200 (Wed, 21 Jun 2006) | 2 lines - adjust docs to take CONFIG_BUSYBOX_EXEC_PATH into account. ------------------------------------------------------------------------ r15467 | aldot | 2006-06-21 21:31:24 +0200 (Wed, 21 Jun 2006) | 18 lines - partial fallout of my TREE_USED touchup against gcc-4.2: rip unused vars, save s 144 bytes text data bss dec hex filename 862434 10156 645924 1518514 172bb2 busybox.old 862322 10156 645892 1518370 172b22 busybox function old new delta z_len 4 - -4 textend 4 - -4 part_nb 4 - -4 insize 4 - -4 ifile_size 4 - -4 do_link 4 - -4 new_text 70 60 -10 ipaddr_list_link 33 23 -10 gzip_main 898 822 -76 ------------------------------------------------------------------------------ (add/remove: 0/6 grow/shrink: 0/3 up/down: 0/-120) Total: -120 bytes ------------------------------------------------------------------------ r15468 | aldot | 2006-06-21 21:43:05 +0200 (Wed, 21 Jun 2006) | 19 lines - remove useless global exports function old new delta rpm_main 940 1601 +661 rpm_getstring 107 112 +5 rpm_getint 148 153 +5 loop_through_files 103 106 +3 fileaction_dobackup 115 113 -2 fileaction_list 5 - -5 rpm_getcount 42 - -42 extract_cpio_gz 161 - -161 rpm_gettags 504 - -504 ------------------------------------------------------------------------------ (add/remove: 0/4 grow/shrink: 4/1 up/down: 674/-714) Total: -40 bytes text data bss dec hex filename 862322 10156 645892 1518370 172b22 busybox.old 862290 10156 645892 1518338 172b02 busybox ------------------------------------------------------------------------ r15555 | aldot | 2006-06-30 14:10:11 +0200 (Fri, 30 Jun 2006) | 22 lines - shrink syslog a little bit, move a big buffer (for 'line') off the bss, fold s emaphore stuff into single caller manually. stats: function old new delta logMessage 395 427 +32 message 1245 1257 +12 opts - 4 +4 small 1 - -1 local_logging 4 - -4 doRemoteLog 4 - -4 circular_logging 4 - -4 syslogd_main 1299 1285 -14 static.res 36 16 -20 .rodata 186650 186586 -64 static.line 1025 - -1025 ------------------------------------------------------------------------------ (add/remove: 1/5 grow/shrink: 2/3 up/down: 48/-1136) Total: -1088 bytes cow@s37:~/src/busybox_scratch$ size sysklogd/syslogd.o{.orig,} text data bss dec hex filename 3723 348 5242 9313 2461 sysklogd/syslogd.o.orig 3697 348 4188 8233 2029 sysklogd/syslogd.o ============================================================================== Overall bloatcheck for the changeset mentioned above: function old new delta rpm_main 953 1608 +655 logMessage 395 427 +32 message 1245 1257 +12 opts - 4 +4 rpm_getstring 107 110 +3 rpm_getint 148 151 +3 loop_through_files 103 104 +1 small 1 - -1 fileaction_dobackup 115 113 -2 z_len 4 - -4 textend 4 - -4 part_nb 4 - -4 local_logging 4 - -4 insize 4 - -4 ifile_size 4 - -4 do_link 4 - -4 doRemoteLog 4 - -4 circular_logging 4 - -4 fileaction_list 5 - -5 new_text 70 60 -10 ipaddr_list_link 33 23 -10 clear_bufs 31 21 -10 syslogd_main 1287 1273 -14 builtin_help 190 176 -14 static.res 36 16 -20 builtin_source 229 199 -30 rpm_getcount 42 - -42 gzip_main 842 786 -56 .rodata 227176 227112 -64 lash_main 609 527 -82 busy_loop 3883 3739 -144 extract_cpio_gz 155 - -155 rpm_gettags 501 - -501 static.line 1025 - -1025 ------------------------------------------------------------------------------ (add/remove: 1/15 grow/shrink: 6/12 up/down: 710/-2221) Total: -1511 bytes
355 lines
6.6 KiB
C
355 lines
6.6 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* iplink.c "ip link".
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <net/if.h>
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#include <net/if_packet.h>
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#include <netpacket/packet.h>
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#include <net/ethernet.h>
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#include "rt_names.h"
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#include "utils.h"
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#include "ip_common.h"
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/* take from linux/sockios.h */
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#define SIOCSIFNAME 0x8923 /* set interface name */
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static int on_off(char *msg)
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{
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bb_error_msg("Error: argument of \"%s\" must be \"on\" or \"off\"", msg);
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return -1;
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}
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static int get_ctl_fd(void)
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{
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int s_errno;
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int fd;
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fd = socket(PF_INET, SOCK_DGRAM, 0);
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if (fd >= 0)
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return fd;
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s_errno = errno;
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fd = socket(PF_PACKET, SOCK_DGRAM, 0);
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if (fd >= 0)
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return fd;
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fd = socket(PF_INET6, SOCK_DGRAM, 0);
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if (fd >= 0)
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return fd;
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errno = s_errno;
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perror("Cannot create control socket");
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return -1;
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}
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static int do_chflags(char *dev, __u32 flags, __u32 mask)
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{
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struct ifreq ifr;
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int fd;
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int err;
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strcpy(ifr.ifr_name, dev);
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fd = get_ctl_fd();
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if (fd < 0)
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return -1;
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err = ioctl(fd, SIOCGIFFLAGS, &ifr);
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if (err) {
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perror("SIOCGIFFLAGS");
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close(fd);
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return -1;
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}
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if ((ifr.ifr_flags^flags)&mask) {
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ifr.ifr_flags &= ~mask;
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ifr.ifr_flags |= mask&flags;
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err = ioctl(fd, SIOCSIFFLAGS, &ifr);
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if (err)
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perror("SIOCSIFFLAGS");
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}
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close(fd);
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return err;
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}
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static int do_changename(char *dev, char *newdev)
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{
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struct ifreq ifr;
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int fd;
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int err;
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strcpy(ifr.ifr_name, dev);
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strcpy(ifr.ifr_newname, newdev);
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fd = get_ctl_fd();
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if (fd < 0)
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return -1;
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err = ioctl(fd, SIOCSIFNAME, &ifr);
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if (err) {
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perror("SIOCSIFNAME");
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close(fd);
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return -1;
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}
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close(fd);
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return err;
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}
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static int set_qlen(char *dev, int qlen)
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{
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struct ifreq ifr;
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int s;
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s = get_ctl_fd();
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if (s < 0)
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return -1;
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memset(&ifr, 0, sizeof(ifr));
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strcpy(ifr.ifr_name, dev);
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ifr.ifr_qlen = qlen;
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if (ioctl(s, SIOCSIFTXQLEN, &ifr) < 0) {
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perror("SIOCSIFXQLEN");
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close(s);
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return -1;
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}
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close(s);
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return 0;
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}
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static int set_mtu(char *dev, int mtu)
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{
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struct ifreq ifr;
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int s;
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s = get_ctl_fd();
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if (s < 0)
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return -1;
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memset(&ifr, 0, sizeof(ifr));
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strcpy(ifr.ifr_name, dev);
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ifr.ifr_mtu = mtu;
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if (ioctl(s, SIOCSIFMTU, &ifr) < 0) {
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perror("SIOCSIFMTU");
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close(s);
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return -1;
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}
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close(s);
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return 0;
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}
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static int get_address(char *dev, int *htype)
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{
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struct ifreq ifr;
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struct sockaddr_ll me;
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socklen_t alen;
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int s;
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s = socket(PF_PACKET, SOCK_DGRAM, 0);
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if (s < 0) {
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perror("socket(PF_PACKET)");
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return -1;
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}
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memset(&ifr, 0, sizeof(ifr));
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strcpy(ifr.ifr_name, dev);
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if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
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perror("SIOCGIFINDEX");
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close(s);
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return -1;
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}
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memset(&me, 0, sizeof(me));
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me.sll_family = AF_PACKET;
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me.sll_ifindex = ifr.ifr_ifindex;
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me.sll_protocol = htons(ETH_P_LOOP);
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if (bind(s, (struct sockaddr*)&me, sizeof(me)) == -1) {
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perror("bind");
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close(s);
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return -1;
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}
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alen = sizeof(me);
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if (getsockname(s, (struct sockaddr*)&me, &alen) == -1) {
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perror("getsockname");
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close(s);
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return -1;
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}
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close(s);
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*htype = me.sll_hatype;
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return me.sll_halen;
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}
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static int parse_address(char *dev, int hatype, int halen, char *lla, struct ifreq *ifr)
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{
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int alen;
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memset(ifr, 0, sizeof(*ifr));
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strcpy(ifr->ifr_name, dev);
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ifr->ifr_hwaddr.sa_family = hatype;
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alen = ll_addr_a2n((unsigned char *)(ifr->ifr_hwaddr.sa_data), 14, lla);
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if (alen < 0)
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return -1;
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if (alen != halen) {
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bb_error_msg("Wrong address (%s) length: expected %d bytes", lla, halen);
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return -1;
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}
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return 0;
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}
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static int set_address(struct ifreq *ifr, int brd)
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{
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int s;
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s = get_ctl_fd();
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if (s < 0)
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return -1;
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if (ioctl(s, brd?SIOCSIFHWBROADCAST:SIOCSIFHWADDR, ifr) < 0) {
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perror(brd?"SIOCSIFHWBROADCAST":"SIOCSIFHWADDR");
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close(s);
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return -1;
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}
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close(s);
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return 0;
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}
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static int do_set(int argc, char **argv)
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{
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char *dev = NULL;
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__u32 mask = 0;
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__u32 flags = 0;
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int qlen = -1;
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int mtu = -1;
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char *newaddr = NULL;
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char *newbrd = NULL;
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struct ifreq ifr0, ifr1;
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char *newname = NULL;
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int htype, halen;
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while (argc > 0) {
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if (strcmp(*argv, "up") == 0) {
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mask |= IFF_UP;
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flags |= IFF_UP;
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} else if (strcmp(*argv, "down") == 0) {
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mask |= IFF_UP;
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flags &= ~IFF_UP;
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} else if (strcmp(*argv, "name") == 0) {
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NEXT_ARG();
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newname = *argv;
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} else if (strcmp(*argv, "mtu") == 0) {
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NEXT_ARG();
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if (mtu != -1)
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duparg("mtu", *argv);
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if (get_integer(&mtu, *argv, 0))
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invarg(*argv, "mtu");
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} else if (strcmp(*argv, "multicast") == 0) {
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NEXT_ARG();
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mask |= IFF_MULTICAST;
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if (strcmp(*argv, "on") == 0) {
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flags |= IFF_MULTICAST;
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} else if (strcmp(*argv, "off") == 0) {
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flags &= ~IFF_MULTICAST;
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} else
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return on_off("multicast");
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} else if (strcmp(*argv, "arp") == 0) {
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NEXT_ARG();
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mask |= IFF_NOARP;
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if (strcmp(*argv, "on") == 0) {
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flags &= ~IFF_NOARP;
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} else if (strcmp(*argv, "off") == 0) {
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flags |= IFF_NOARP;
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} else
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return on_off("noarp");
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} else if (strcmp(*argv, "addr") == 0) {
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NEXT_ARG();
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newaddr = *argv;
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} else {
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if (strcmp(*argv, "dev") == 0) {
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NEXT_ARG();
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}
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if (dev)
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duparg2("dev", *argv);
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dev = *argv;
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}
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argc--; argv++;
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}
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if (!dev) {
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bb_error_msg(bb_msg_requires_arg, "\"dev\"");
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exit(-1);
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}
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if (newaddr || newbrd) {
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halen = get_address(dev, &htype);
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if (halen < 0)
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return -1;
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if (newaddr) {
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if (parse_address(dev, htype, halen, newaddr, &ifr0) < 0)
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return -1;
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}
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if (newbrd) {
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if (parse_address(dev, htype, halen, newbrd, &ifr1) < 0)
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return -1;
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}
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}
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if (newname && strcmp(dev, newname)) {
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if (do_changename(dev, newname) < 0)
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return -1;
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dev = newname;
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}
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if (qlen != -1) {
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if (set_qlen(dev, qlen) < 0)
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return -1;
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}
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if (mtu != -1) {
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if (set_mtu(dev, mtu) < 0)
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return -1;
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}
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if (newaddr || newbrd) {
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if (newbrd) {
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if (set_address(&ifr1, 1) < 0)
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return -1;
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}
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if (newaddr) {
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if (set_address(&ifr0, 0) < 0)
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return -1;
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}
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}
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if (mask)
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return do_chflags(dev, flags, mask);
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return 0;
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}
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static int ipaddr_list_link(int argc, char **argv)
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{
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preferred_family = AF_PACKET;
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return ipaddr_list_or_flush(argc, argv, 0);
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}
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int do_iplink(int argc, char **argv)
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{
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if (argc > 0) {
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if (matches(*argv, "set") == 0)
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return do_set(argc-1, argv+1);
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if (matches(*argv, "show") == 0 ||
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matches(*argv, "lst") == 0 ||
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matches(*argv, "list") == 0)
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return ipaddr_list_link(argc-1, argv+1);
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} else
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return ipaddr_list_link(0, NULL);
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bb_error_msg("Command \"%s\" is unknown.", *argv);
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exit(-1);
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}
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