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Fix the return value of ifchd_cmd_str() and correct its length check.

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Nicholas J. Kain 2011-07-27 00:37:11 -04:00
parent 17a2403635
commit 7ef7fa8a8d
1 changed files with 2 additions and 2 deletions
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4
ndhc/ifchange.c
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@ -121,12 +121,12 @@ static int ifchd_cmd_str(char *buf, size_t buflen, char *optname,
{
char *obuf = buf;
buf += snprintf(buf, buflen, "%s:", optname);
if (buflen < optlen + 1)
if (buflen < (buf - obuf) + optlen + 2)
return -1;
memcpy(buf, optdata, optlen);
buf[optlen] = ':';
buf[optlen+1] = '\0';
return (buf - obuf) + optlen;
return (buf - obuf) + optlen + 1;
}
#define IFCHD_SW_CMD(x, y) case DCODE_##x: \