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authorJeff Johnston <jjohnstn@redhat.com>2008-05-22 21:30:28 +0000
committerJeff Johnston <jjohnstn@redhat.com>2008-05-22 21:30:28 +0000
commit3c77dcff9ebf51910b01ca770f7a8ffef52b617c (patch)
tree8424a3ed0b00dfcb1d31428f57817fadf658ba80 /newlib/libc/sys/linux/net/ip6opt.c
parent8a179967e670032fb2decf0ebcdd0059f9d139d8 (diff)
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2008-05-22 Jeff Johnston <jjohnstn@redhat.com>
* libc/include/sys/reent.h: Add _h_errno field. * libc/sys/linux/libc-symbols.h: Add default stubs for new libc macros now used in net directory. * libc/sys/linux/bits/libc-lock.h: Always define _IO_MTSAFE_IO. * libc/sys/linux/include/hesiod.h: Add needed macros for new code in net directory. * libc/sys/linux/include/netdb.h: Ditto. * libc/sys/linux/include/resolv.h: Ditto. * libc/sys/linux/include/stdint.h: Ditto. * libc/sys/linux/include/arpa/nameser.h: Ditto. * libc/sys/linux/include/net/ethernet.h: Ditto. * libc/sys/linux/include/net/if_ppp.h: Ditto. * libc/sys/linux/include/netinet/if_ether.h: Ditto. * libc/sys/linux/machine/i386/get_clockfreq.c: Remove static memmem. * libc/sys/linux/machine/i386/include/endian.h: Protect macros with flags to avoid duplicate definition. * libc/sys/linux/machine/i386/include/param.h: Ditto. * libc/sys/linux/net/Makefile.am: Modified to account for removed and added files. * libc/sys/linux/net/Makefile.in: Regenerated. * libc/sys/linux/net/base64.c: Replaced with glibc version of code. * libc/sys/linux/net/getaddrinfo.c: Ditto. * libc/sys/linux/net/getnameinfo.c: Ditto. * libc/sys/linux/net/getproto.c: Ditto. * libc/sys/linux/net/getservent.c: Ditto. * libc/sys/linux/net/inet_netof.c: Ditto. * libc/sys/linux/net/inet_lnaof.c: Ditto. * libc/sys/linux/net/ns_name.c: Ditto. * libc/sys/linux/net/ns_netint.c: Ditto. * libc/sys/linux/net/inet_ntoa.c: Ditto. * libc/sys/linux/net/ns_parse.c: Ditto. * libc/sys/linux/net/ns_print.c: Ditto. * libc/sys/linux/net/ns_ttl.c: Ditto. * libc/sys/linux/net/nsap_addr.c: Ditto. * libc/sys/linux/net/rcmd.c: Ditto. * libc/sys/linux/net/res_comp.c: Ditto. * libc/sys/linux/net/res_data.c: Ditto. * libc/sys/linux/net/res_debug.c: Ditto. * libc/sys/linux/net/res_init.c: Ditto. * libc/sys/linux/net/res_mkquery.c: Ditto. * libc/sys/linux/net/res_query.c: Ditto. * libc/sys/linux/net/res_send.c: Ditto. * libc/sys/linux/net/send.c: Ditto. * libc/sys/linux/stdlib/collate.c: Ditto. * libc/sys/linux/sys/ioctl.h: Ditto. * libc/sys/linux/sys/socket.h: Ditto. * libc/sys/linux/sys/unistd.h: Ditto. * libc/sys/linux/iconv/iconvconfig.c: Removed either because no longer used or because licensing includes advertising clause that cannot be ignored. * libc/sys/linux/iconv/strtab.c: Ditto. * libc/sys/linux/include/libc_private.h: Ditto. * libc/sys/linux/include/nsswitch.h: Ditto. * libc/sys/linux/include/net/if_atm.h: Ditto. * libc/sys/linux/include/net/if_media.h: Ditto. * libc/sys/linux/include/net/if_pppvar.h: Ditto. * libc/sys/linux/include/netinet/if_atm.h: Ditto. * libc/sys/linux/include/netinet/ip_flow.h: Ditto. * libc/sys/linux/intl/locale.alias: Ditto. * libc/sys/linux/net/addr2ascii.3: Ditto. * libc/sys/linux/net/bindresvport.c: Ditto. * libc/sys/linux/net/byteorder.3: Ditto. * libc/sys/linux/net/res_config.h: Ditto. * libc/sys/linux/net/ether_addr.c: Ditto. * libc/sys/linux/net/ethers.3: Ditto. * libc/sys/linux/net/getaddrinfo.3: Ditto. * libc/sys/linux/net/gethostbydns.c: Ditto. * libc/sys/linux/net/gethostbyht.c: Ditto. * libc/sys/linux/net/gethostbyname.3: Ditto. * libc/sys/linux/net/gethostbynis.c: Ditto. * libc/sys/linux/net/gethostnamadr.c: Ditto. * libc/sys/linux/net/getifaddrs.3: Ditto. * libc/sys/linux/net/getifaddrs.c: Ditto. * libc/sys/linux/net/getipnodebyname.3: Ditto. * libc/sys/linux/net/getnameinfo.3: Ditto. * libc/sys/linux/net/getnetbydns.c: Ditto. * libc/sys/linux/net/getnetbyht.c: Ditto. * libc/sys/linux/net/getnetbynis.c: Ditto. * libc/sys/linux/net/getnetent.3: Ditto. * libc/sys/linux/net/getnetnamadr.c: Ditto. * libc/sys/linux/net/getprotoent.3: Ditto. * libc/sys/linux/net/getprotoent.c: Ditto. * libc/sys/linux/net/getprotoname.c: Ditto. * libc/sys/linux/net/getservbyname.c: Ditto. * libc/sys/linux/net/getservbyport.c: Ditto. * libc/sys/linux/net/getservent.3: Ditto. * libc/sys/linux/net/herror.c: Ditto. * libc/sys/linux/net/hesiod.3: Ditto. * libc/sys/linux/net/hesiod.c: Ditto. * libc/sys/linux/net/if_indextoname.3: Ditto. * libc/sys/linux/net/inet.3: Ditto. * libc/sys/linux/net/inet6_option_space.3: Ditto. * libc/sys/linux/net/inet6_rthdr_space.3: Ditto. * libc/sys/linux/net/inet_makeaddr.c: Ditto. * libc/sys/linux/net/inet_net.3: Ditto. * libc/sys/linux/net/inet_network.c: Ditto. * libc/sys/linux/net/innetgr-stub.c: Ditto. * libc/sys/linux/net/ip6opt.c: Ditto. * libc/sys/linux/net/iso_addr.3: Ditto. * libc/sys/linux/net/iso_addr.c: Ditto. * libc/sys/linux/net/linkaddr.3: Ditto. * libc/sys/linux/net/linkaddr.c: Ditto. * libc/sys/linux/net/map_v4v6.c: Ditto. * libc/sys/linux/net/name6.c: Ditto. * libc/sys/linux/net/namespace.h: Ditto. * libc/sys/linux/net/ns.3: Ditto. * libc/sys/linux/net/ns_addr.c: Ditto. * libc/sys/linux/net/ns_ntoa.c: Ditto. * libc/sys/linux/net/nsdispatch.3: Ditto. * libc/sys/linux/net/nsdispatch.c: Ditto. * libc/sys/linux/net/nslexer.c: Ditto. * libc/sys/linux/net/nslexer.l: Ditto. * libc/sys/linux/net/nsparser.c: Ditto. * libc/sys/linux/net/nsparser.h: Ditto. * libc/sys/linux/net/nsparser.y: Ditto. * libc/sys/linux/net/rcmd.3: Ditto. * libc/sys/linux/net/rcmdsh.3: Ditto. * libc/sys/linux/net/res_mkupdate.c: Ditto. * libc/sys/linux/net/res_update.c: Ditto. * libc/sys/linux/net/resolver.3: Ditto. * libc/sys/linux/net/rthdr.c: Ditto. * libc/sys/linux/net/vars.c: Ditto. * libc/sys/linux/shlib-compat.h: New file. * libc/sys/linux/machine/i386/atomic.h: Ditto. * libc/sys/linux/net/XXX-lookup.c: Ditto. * libc/sys/linux/net/alias-lookup.c: Ditto. * libc/sys/linux/net/res_libc.c: Ditto. * libc/sys/linux/net/aliases.h: Ditto. * libc/sys/linux/net/check_pf.c: Ditto. * libc/sys/linux/net/databases.def: Ditto. * libc/sys/linux/net/digits_dots.c: Ditto. * libc/sys/linux/net/ether_aton.c: Ditto. * libc/sys/linux/net/ether_aton_r.c: Ditto. * libc/sys/linux/net/ether_hton.c: Ditto. * libc/sys/linux/net/ether_line.c: Ditto. * libc/sys/linux/net/ether_ntoa.c: Ditto. * libc/sys/linux/net/ether_ntoa_r.c: Ditto. * libc/sys/linux/net/ether_ntoh.c: Ditto. * libc/sys/linux/net/etherent.h: Ditto. * libc/sys/linux/net/ethers-lookup.c: Ditto. * libc/sys/linux/net/function.def: Ditto. * libc/sys/linux/net/getXXbyYY.c: Ditto. * libc/sys/linux/net/getXXbyYY_r.c: Ditto. * libc/sys/linux/net/getXXent.c: Ditto. * libc/sys/linux/net/getXXent_r.c: Ditto. * libc/sys/linux/net/getaliasent.c: Ditto. * libc/sys/linux/net/getaliasent_r.c: Ditto. * libc/sys/linux/net/getaliasname.c: Ditto. * libc/sys/linux/net/getaliasname_r.c: Ditto. * libc/sys/linux/net/gethstbyad.c: Ditto. * libc/sys/linux/net/gethstbyad_r.c: Ditto. * libc/sys/linux/net/gethstbynm.c: Ditto. * libc/sys/linux/net/gethstbynm2.c: Ditto. * libc/sys/linux/net/gethstbynm2_r.c: Ditto. * libc/sys/linux/net/gethstbynm_r.c: Ditto. * libc/sys/linux/net/gethstent.c: Ditto. * libc/sys/linux/net/gethstent_r.c: Ditto. * libc/sys/linux/net/getnetbyad.c: Ditto. * libc/sys/linux/net/getnetbyad_r.c: Ditto. * libc/sys/linux/net/getnetbynm.c: Ditto. * libc/sys/linux/net/getnetbynm_r.c: Ditto. * libc/sys/linux/net/getnetent.c: Ditto. * libc/sys/linux/net/getnetent_r.c: Ditto. * libc/sys/linux/net/getnetgrent.c: Ditto. * libc/sys/linux/net/getnetgrent_r.c: Ditto. * libc/sys/linux/net/getnssent.c: Ditto. * libc/sys/linux/net/getnssent_r.c: Ditto. * libc/sys/linux/net/getproto_r.c: Ditto. * libc/sys/linux/net/getprtent.c: Ditto. * libc/sys/linux/net/getprtent_r.c: Ditto. * libc/sys/linux/net/getprtname.c: Ditto. * libc/sys/linux/net/getprtname_r.c: Ditto. * libc/sys/linux/net/getrpcbyname.c: Ditto. * libc/sys/linux/net/getrpcbyname_r.c: Ditto. * libc/sys/linux/net/getrpcbynumber.c: Ditto. * libc/sys/linux/net/getrpcbynumber_r.c: Ditto. * libc/sys/linux/net/getrpcent.c: Ditto. * libc/sys/linux/net/getrpcent_r.c: Ditto. * libc/sys/linux/net/getservent_r.c: Ditto. * libc/sys/linux/net/getsrvbynm.c: Ditto. * libc/sys/linux/net/getsrvbynm_r.c: Ditto. * libc/sys/linux/net/getsrvbypt.c: Ditto. * libc/sys/linux/net/getsrvbypt_r.c: Ditto. * libc/sys/linux/net/grp-lookup.c: Ditto. * libc/sys/linux/net/herrno.c: Ditto. * libc/sys/linux/net/hosts-lookup.c: Ditto. * libc/sys/linux/net/ifaddrs.h: Ditto. * libc/sys/linux/net/ifreq.c: Ditto. * libc/sys/linux/net/ifreq.h: Ditto. * libc/sys/linux/net/in6_addr.c: Ditto. * libc/sys/linux/net/inet6_option.c: Ditto. * libc/sys/linux/net/inet_mkadr.c: Ditto. * libc/sys/linux/net/inet_net.c: Ditto. * libc/sys/linux/net/key-lookup.c: Ditto. * libc/sys/linux/net/local.h: Ditto. * libc/sys/linux/net/netgroup.h: Ditto. * libc/sys/linux/net/netgrp-lookup.c: Ditto. * libc/sys/linux/net/network-lookup.c: Ditto. * libc/sys/linux/net/not-cancel.h: Ditto. * libc/sys/linux/net/ns_samedomain.c: Ditto. * libc/sys/linux/net/nscd-types.h: Ditto. * libc/sys/linux/net/nss.h: Ditto. * libc/sys/linux/net/nsswitch.c: Ditto. * libc/sys/linux/net/nsswitch.h: Ditto. * libc/sys/linux/net/opensock.c: Ditto. * libc/sys/linux/net/proto-lookup.c: Ditto. * libc/sys/linux/net/pwd-lookup.c: Ditto. * libc/sys/linux/net/res_debug.h: Ditto. * libc/sys/linux/net/res_hconf.c: Ditto. * libc/sys/linux/net/res_hconf.h: Ditto. * libc/sys/linux/net/rexec.c: Ditto. * libc/sys/linux/net/rpc-lookup.c: Ditto. * libc/sys/linux/net/ruserpass.c: Ditto. * libc/sys/linux/net/service-lookup.c: Ditto. * libc/sys/linux/net/spwd-lookup.c: Ditto. * libc/sys/linux/net/nscd/nscd-client.h: Ditto. * libc/sys/linux/net/nscd/nscd_proto.h: Ditto.
Diffstat (limited to 'newlib/libc/sys/linux/net/ip6opt.c')
-rw-r--r--newlib/libc/sys/linux/net/ip6opt.c387
1 files changed, 0 insertions, 387 deletions
diff --git a/newlib/libc/sys/linux/net/ip6opt.c b/newlib/libc/sys/linux/net/ip6opt.c
deleted file mode 100644
index f3f51d507..000000000
--- a/newlib/libc/sys/linux/net/ip6opt.c
+++ /dev/null
@@ -1,387 +0,0 @@
-/*
- * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the project nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#include <sys/types.h>
-
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-#include <netinet/ip6.h>
-
-#include <string.h>
-#include <stdio.h>
-
-static int ip6optlen(u_int8_t *opt, u_int8_t *lim);
-static void inet6_insert_padopt(u_char *p, int len);
-
-/*
- * This function returns the number of bytes required to hold an option
- * when it is stored as ancillary data, including the cmsghdr structure
- * at the beginning, and any padding at the end (to make its size a
- * multiple of 8 bytes). The argument is the size of the structure
- * defining the option, which must include any pad bytes at the
- * beginning (the value y in the alignment term "xn + y"), the type
- * byte, the length byte, and the option data.
- */
-int
-inet6_option_space(nbytes)
- int nbytes;
-{
- nbytes += 2; /* we need space for nxt-hdr and length fields */
- return(CMSG_SPACE((nbytes + 7) & ~7));
-}
-
-/*
- * This function is called once per ancillary data object that will
- * contain either Hop-by-Hop or Destination options. It returns 0 on
- * success or -1 on an error.
- */
-int
-inet6_option_init(bp, cmsgp, type)
- void *bp;
- struct cmsghdr **cmsgp;
- int type;
-{
- struct cmsghdr *ch = (struct cmsghdr *)bp;
-
- /* argument validation */
- if (type != IPV6_HOPOPTS && type != IPV6_DSTOPTS)
- return(-1);
-
- ch->cmsg_level = IPPROTO_IPV6;
- ch->cmsg_type = type;
- ch->cmsg_len = CMSG_LEN(0);
-
- *cmsgp = ch;
- return(0);
-}
-
-/*
- * This function appends a Hop-by-Hop option or a Destination option
- * into an ancillary data object that has been initialized by
- * inet6_option_init(). This function returns 0 if it succeeds or -1 on
- * an error.
- * multx is the value x in the alignment term "xn + y" described
- * earlier. It must have a value of 1, 2, 4, or 8.
- * plusy is the value y in the alignment term "xn + y" described
- * earlier. It must have a value between 0 and 7, inclusive.
- */
-int
-inet6_option_append(cmsg, typep, multx, plusy)
- struct cmsghdr *cmsg;
- const u_int8_t *typep;
- int multx;
- int plusy;
-{
- int padlen, optlen, off;
- u_char *bp = (u_char *)cmsg + cmsg->cmsg_len;
- struct ip6_ext *eh = (struct ip6_ext *)CMSG_DATA(cmsg);
-
- /* argument validation */
- if (multx != 1 && multx != 2 && multx != 4 && multx != 8)
- return(-1);
- if (plusy < 0 || plusy > 7)
- return(-1);
- if (typep[0] > 255)
- return(-1);
-
- /*
- * If this is the first option, allocate space for the
- * first 2 bytes(for next header and length fields) of
- * the option header.
- */
- if (bp == (u_char *)eh) {
- bp += 2;
- cmsg->cmsg_len += 2;
- }
-
- /* calculate pad length before the option. */
- off = bp - (u_char *)eh;
- padlen = (((off % multx) + (multx - 1)) & ~(multx - 1)) -
- (off % multx);
- padlen += plusy;
- /* insert padding */
- inet6_insert_padopt(bp, padlen);
- cmsg->cmsg_len += padlen;
- bp += padlen;
-
- /* copy the option */
- if (typep[0] == IP6OPT_PAD1)
- optlen = 1;
- else
- optlen = typep[1] + 2;
- memcpy(bp, typep, optlen);
- bp += optlen;
- cmsg->cmsg_len += optlen;
-
- /* calculate pad length after the option and insert the padding */
- off = bp - (u_char *)eh;
- padlen = ((off + 7) & ~7) - off;
- inet6_insert_padopt(bp, padlen);
- bp += padlen;
- cmsg->cmsg_len += padlen;
-
- /* update the length field of the ip6 option header */
- eh->ip6e_len = ((bp - (u_char *)eh) >> 3) - 1;
-
- return(0);
-}
-
-/*
- * This function appends a Hop-by-Hop option or a Destination option
- * into an ancillary data object that has been initialized by
- * inet6_option_init(). This function returns a pointer to the 8-bit
- * option type field that starts the option on success, or NULL on an
- * error.
- * The difference between this function and inet6_option_append() is
- * that the latter copies the contents of a previously built option into
- * the ancillary data object while the current function returns a
- * pointer to the space in the data object where the option's TLV must
- * then be built by the caller.
- *
- */
-u_int8_t *
-inet6_option_alloc(cmsg, datalen, multx, plusy)
- struct cmsghdr *cmsg;
- int datalen;
- int multx;
- int plusy;
-{
- int padlen, off;
- u_int8_t *bp = (u_char *)cmsg + cmsg->cmsg_len;
- u_int8_t *retval;
- struct ip6_ext *eh = (struct ip6_ext *)CMSG_DATA(cmsg);
-
- /* argument validation */
- if (multx != 1 && multx != 2 && multx != 4 && multx != 8)
- return(NULL);
- if (plusy < 0 || plusy > 7)
- return(NULL);
-
- /*
- * If this is the first option, allocate space for the
- * first 2 bytes(for next header and length fields) of
- * the option header.
- */
- if (bp == (u_char *)eh) {
- bp += 2;
- cmsg->cmsg_len += 2;
- }
-
- /* calculate pad length before the option. */
- off = bp - (u_char *)eh;
- padlen = (((off % multx) + (multx - 1)) & ~(multx - 1)) -
- (off % multx);
- padlen += plusy;
- /* insert padding */
- inet6_insert_padopt(bp, padlen);
- cmsg->cmsg_len += padlen;
- bp += padlen;
-
- /* keep space to store specified length of data */
- retval = bp;
- bp += datalen;
- cmsg->cmsg_len += datalen;
-
- /* calculate pad length after the option and insert the padding */
- off = bp - (u_char *)eh;
- padlen = ((off + 7) & ~7) - off;
- inet6_insert_padopt(bp, padlen);
- bp += padlen;
- cmsg->cmsg_len += padlen;
-
- /* update the length field of the ip6 option header */
- eh->ip6e_len = ((bp - (u_char *)eh) >> 3) - 1;
-
- return(retval);
-}
-
-/*
- * This function processes the next Hop-by-Hop option or Destination
- * option in an ancillary data object. If another option remains to be
- * processed, the return value of the function is 0 and *tptrp points to
- * the 8-bit option type field (which is followed by the 8-bit option
- * data length, followed by the option data). If no more options remain
- * to be processed, the return value is -1 and *tptrp is NULL. If an
- * error occurs, the return value is -1 and *tptrp is not NULL.
- * (RFC 2292, 6.3.5)
- */
-int
-inet6_option_next(cmsg, tptrp)
- const struct cmsghdr *cmsg;
- u_int8_t **tptrp;
-{
- struct ip6_ext *ip6e;
- int hdrlen, optlen;
- u_int8_t *lim;
-
- if (cmsg->cmsg_level != IPPROTO_IPV6 ||
- (cmsg->cmsg_type != IPV6_HOPOPTS &&
- cmsg->cmsg_type != IPV6_DSTOPTS))
- return(-1);
-
- /* message length validation */
- if (cmsg->cmsg_len < CMSG_SPACE(sizeof(struct ip6_ext)))
- return(-1);
- ip6e = (struct ip6_ext *)CMSG_DATA(cmsg);
- hdrlen = (ip6e->ip6e_len + 1) << 3;
- if (cmsg->cmsg_len < CMSG_SPACE(hdrlen))
- return(-1);
-
- /*
- * If the caller does not specify the starting point,
- * simply return the 1st option.
- * Otherwise, search the option list for the next option.
- */
- lim = (u_int8_t *)ip6e + hdrlen;
- if (*tptrp == NULL)
- *tptrp = (u_int8_t *)(ip6e + 1);
- else {
- if ((optlen = ip6optlen(*tptrp, lim)) == 0)
- return(-1);
-
- *tptrp = *tptrp + optlen;
- }
- if (*tptrp >= lim) { /* there is no option */
- *tptrp = NULL;
- return(-1);
- }
- /*
- * Finally, checks if the next option is safely stored in the
- * cmsg data.
- */
- if (ip6optlen(*tptrp, lim) == 0)
- return(-1);
- else
- return(0);
-}
-
-/*
- * This function is similar to the inet6_option_next() function,
- * except this function lets the caller specify the option type to be
- * searched for, instead of always returning the next option in the
- * ancillary data object.
- * Note: RFC 2292 says the type of tptrp is u_int8_t *, but we think
- * it's a typo. The variable should be type of u_int8_t **.
- */
-int
-inet6_option_find(cmsg, tptrp, type)
- const struct cmsghdr *cmsg;
- u_int8_t **tptrp;
- int type;
-{
- struct ip6_ext *ip6e;
- int hdrlen, optlen;
- u_int8_t *optp, *lim;
-
- if (cmsg->cmsg_level != IPPROTO_IPV6 ||
- (cmsg->cmsg_type != IPV6_HOPOPTS &&
- cmsg->cmsg_type != IPV6_DSTOPTS))
- return(-1);
-
- /* message length validation */
- if (cmsg->cmsg_len < CMSG_SPACE(sizeof(struct ip6_ext)))
- return(-1);
- ip6e = (struct ip6_ext *)CMSG_DATA(cmsg);
- hdrlen = (ip6e->ip6e_len + 1) << 3;
- if (cmsg->cmsg_len < CMSG_SPACE(hdrlen))
- return(-1);
-
- /*
- * If the caller does not specify the starting point,
- * search from the beginning of the option list.
- * Otherwise, search from *the next option* of the specified point.
- */
- lim = (u_int8_t *)ip6e + hdrlen;
- if (*tptrp == NULL)
- *tptrp = (u_int8_t *)(ip6e + 1);
- else {
- if ((optlen = ip6optlen(*tptrp, lim)) == 0)
- return(-1);
-
- *tptrp = *tptrp + optlen;
- }
- for (optp = *tptrp; optp < lim; optp += optlen) {
- if (*optp == type) {
- *tptrp = optp;
- return(0);
- }
- if ((optlen = ip6optlen(optp, lim)) == 0)
- return(-1);
- }
-
- /* search failed */
- *tptrp = NULL;
- return(-1);
-}
-
-/*
- * Calculate the length of a given IPv6 option. Also checks
- * if the option is safely stored in user's buffer according to the
- * calculated length and the limitation of the buffer.
- */
-static int
-ip6optlen(opt, lim)
- u_int8_t *opt, *lim;
-{
- int optlen;
-
- if (*opt == IP6OPT_PAD1)
- optlen = 1;
- else {
- /* is there enough space to store type and len? */
- if (opt + 2 > lim)
- return(0);
- optlen = *(opt + 1) + 2;
- }
- if (opt + optlen <= lim)
- return(optlen);
-
- return(0);
-}
-
-static void
-inet6_insert_padopt(u_char *p, int len)
-{
- switch(len) {
- case 0:
- return;
- case 1:
- p[0] = IP6OPT_PAD1;
- return;
- default:
- p[0] = IP6OPT_PADN;
- p[1] = len - 2;
- memset(&p[2], 0, len - 2);
- return;
- }
-}