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nameif: shrink (by Vladimir)

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function                                             old     new   delta
nameif_main                                          668     636     -32
This commit is contained in:
Denis Vlasenko 2008-08-01 02:32:23 +00:00
parent 9ef1a5ddc1
commit cfe2936a73
1 changed files with 16 additions and 28 deletions
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42
networking/nameif.c
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@ -136,13 +136,11 @@ int nameif_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int nameif_main(int argc, char **argv)
{
ethtable_t *clist = NULL;
FILE *ifh;
const char *fname = "/etc/mactab";
char *line;
char *line_ptr;
int linenum;
int ctl_sk;
ethtable_t *ch;
parser_t *parser;
char *token[2];
if (1 & getopt32(argv, "sc:", &fname)) {
openlog(applet_name, 0, LOG_LOCAL0);
@ -160,35 +158,26 @@ int nameif_main(int argc, char **argv)
prepend_new_eth_table(&clist, ifname, *argv++);
}
} else {
char *tokens[2];
struct parser_t *parser = config_open(fname);
while (config_read(parser, tokens, 2, 2, "# \t", PARSE_NORMAL))
prepend_new_eth_table(&clist, tokens[0], tokens[1]);
parser = config_open(fname);
while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL))
prepend_new_eth_table(&clist, token[0], token[1]);
config_close(parser);
}
ctl_sk = xsocket(PF_INET, SOCK_DGRAM, 0);
ifh = xfopen_for_read("/proc/net/dev");
parser = config_open2("/proc/net/dev", xfopen_for_read);
linenum = 0;
while (clist) {
while (clist && config_read(parser, token, 2, 2, "\0: \t", PARSE_NORMAL)) {
struct ifreq ifr;
#if ENABLE_FEATURE_NAMEIF_EXTENDED
struct ethtool_drvinfo drvinfo;
#endif
line = xmalloc_fgets(ifh);
if (line == NULL)
break; /* Seems like we're done */
if (linenum++ < 2 )
goto next_line; /* Skip the first two lines */
if (parser->lineno < 2)
continue; /* Skip the first two lines */
/* Find the current interface name and copy it to ifr.ifr_name */
line_ptr = skip_whitespace(line);
*strpbrk(line_ptr, " \t\n:") = '\0';
memset(&ifr, 0, sizeof(struct ifreq));
strncpy(ifr.ifr_name, line_ptr, sizeof(ifr.ifr_name));
strncpy(ifr.ifr_name, token[0], sizeof(ifr.ifr_name));
#if ENABLE_FEATURE_NAMEIF_EXTENDED
/* Check for driver etc. */
@ -211,11 +200,12 @@ int nameif_main(int argc, char **argv)
if (ch->mac && memcmp(ch->mac, ifr.ifr_hwaddr.sa_data, ETH_ALEN) != 0)
continue;
/* if we came here, all selectors have matched */
goto found;
break;
}
/* Nothing found for current interface */
goto next_line;
found:
if (!ch)
continue;
if (strcmp(ifr.ifr_name, ch->ifname) != 0) {
strcpy(ifr.ifr_newname, ch->ifname);
ioctl_or_perror_and_die(ctl_sk, SIOCSIFNAME, &ifr,
@ -231,13 +221,11 @@ int nameif_main(int argc, char **argv)
ch->next->prev = ch->prev;
if (ENABLE_FEATURE_CLEAN_UP)
delete_eth_table(ch);
next_line:
free(line);
}
if (ENABLE_FEATURE_CLEAN_UP) {
for (ch = clist; ch; ch = ch->next)
delete_eth_table(ch);
fclose(ifh);
config_close(parser);
};
return 0;