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CMSG_XXX macros alignment fixes to follow RFC2292.

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Approved by: jkh


git-svn-id: http://svn0.us-east.freebsd.org/base/head/contrib/telnet@57724 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
This commit is contained in:
shin 2000-03-03 12:50:46 +00:00
parent 2d4e3ed569
commit 5137153b86
1 changed files with 12 additions and 14 deletions
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26
telnet/commands.c
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@ -3058,19 +3058,18 @@ sourceroute(ai, arg, cpp, lenp, protop, optp)
* at least 7 bytes for the option.
*/
if (cpp == NULL || lenp == NULL)
return((unsigned long)-1);
return -1;
if (*cpp != NULL) {
switch (res->ai_family) {
case AF_INET:
if (*lenp < 7)
return((unsigned long)-1);
return -1;
break;
#ifdef INET6
case AF_INET6:
if (*lenp < (sizeof(struct cmsghdr) +
sizeof(struct ip6_rthdr) +
sizeof(struct in6_addr)))
return((unsigned long)-1);
if (*lenp < CMSG_SPACE(sizeof(struct ip6_rthdr) +
sizeof(struct in6_addr)))
return -1;
break;
#endif
}
@ -3083,7 +3082,7 @@ sourceroute(ai, arg, cpp, lenp, protop, optp)
lsrp = *cpp;
ep = lsrp + *lenp;
} else {
*cpp = lsrp = buf;
*cpp = lsrp = ALIGN(buf);
ep = lsrp + 1024;
}
@ -3119,7 +3118,7 @@ sourceroute(ai, arg, cpp, lenp, protop, optp)
#endif
if (*cp != '@')
return((unsigned long)-1);
return -1;
#ifndef sysV88
lsrp++; /* skip over length, we'll fill it in later */
@ -3195,16 +3194,15 @@ sourceroute(ai, arg, cpp, lenp, protop, optp)
*/
#ifdef INET6
if (res->ai_family == AF_INET6) {
if (((char *)cmsg +
sizeof(struct cmsghdr) +
if (((char *)CMSG_DATA(cmsg) +
sizeof(struct ip6_rthdr) +
((inet6_rthdr_segments(cmsg) + 1) *
sizeof(struct in6_addr))) > ep)
return((unsigned long)-1);
return -1;
} else
#endif
if (lsrp + 4 > ep)
return((unsigned long)-1);
return -1;
freeaddrinfo(res);
}
#ifdef INET6
@ -3218,7 +3216,7 @@ sourceroute(ai, arg, cpp, lenp, protop, optp)
if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
*cpp = 0;
*lenp = 0;
return((unsigned long)-1);
return -1;
}
*lsrp++ = IPOPT_NOP; /* 32 bit word align it */
*lenp = lsrp - *cpp;
@ -3227,7 +3225,7 @@ sourceroute(ai, arg, cpp, lenp, protop, optp)
if (ipopt.io_len <= 5) { /* Is 3 better ? */
*cpp = 0;
*lenp = 0;
return((unsigned long)-1);
return -1;
}
*lenp = sizeof(ipopt);
*cpp = (char *) &ipopt;