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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /inet/inet6_opt.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'inet/inet6_opt.c')
-rw-r--r--inet/inet6_opt.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/inet/inet6_opt.c b/inet/inet6_opt.c
deleted file mode 100644
index 17d3fee213..0000000000
--- a/inet/inet6_opt.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/* Copyright (C) 2006, 2007 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <string.h>
-#include <netinet/in.h>
-#include <netinet/ip6.h>
-
-
-/* RFC 3542, 10.1
-
-   This function returns the number of bytes needed for the empty
-   extension header i.e., without any options.  If EXTBUF is not NULL it
-   also initializes the extension header to have the correct length
-   field.  In that case if the EXTLEN value is not a positive (i.e.,
-   non-zero) multiple of 8 the function fails and returns -1.  */
-int
-inet6_opt_init (void *extbuf, socklen_t extlen)
-{
-  if (extbuf != NULL)
-    {
-      if (extlen <= 0 || (extlen % 8) != 0)
-	return -1;
-
-      /* Fill in the length in units of 8 octets.  */
-      struct ip6_hbh *extp = (struct ip6_hbh *) extbuf;
-      extp->ip6h_len = extlen / 8;
-    }
-
-  return sizeof (struct ip6_hbh);
-}
-
-
-static void
-add_padding (uint8_t *extbuf, int offset, int npad)
-{
-  if (npad == 1)
-    extbuf[offset] = IP6OPT_PAD1;
-  else if (npad > 0)
-    {
-      struct ip6_opt *pad_opt = (struct ip6_opt *) (extbuf + offset);
-
-      pad_opt->ip6o_type = IP6OPT_PADN;
-      pad_opt->ip6o_len = npad - sizeof (struct ip6_opt);
-      /* Clear the memory used by the padding.  */
-      memset (pad_opt + 1, '\0', pad_opt->ip6o_len);
-    }
-}
-
-
-
-/* RFC 3542, 10.2
-
-   This function returns the updated total length taking into account
-   adding an option with length 'len' and alignment 'align'.  If
-   EXTBUF is not NULL then, in addition to returning the length, the
-   function inserts any needed pad option, initializes the option
-   (setting the type and length fields) and returns a pointer to the
-   location for the option content in databufp.  If the option does
-   not fit in the extension header buffer the function returns -1.  */
-int
-inet6_opt_append (void *extbuf, socklen_t extlen, int offset, uint8_t type,
-		  socklen_t len, uint8_t align, void **databufp)
-{
-  /* Check minimum offset.  */
-  if (offset < sizeof (struct ip6_hbh))
-    return -1;
-
-  /* One cannot add padding options.  */
-  if (type == IP6OPT_PAD1 || type == IP6OPT_PADN)
-    return -1;
-
-  /* The option length must fit in one octet.  */
-  if (len > 255)
-    return -1;
-
-  /* The alignment can only by 1, 2, 4, or 8 and must not exceed the
-     option length.  */
-  if (align == 0 || align > 8 || (align & (align - 1)) != 0 || align > len)
-    return -1;
-
-  /* Determine the needed padding for alignment.  Following the
-     current content of the buffer we have the is the IPv6 option type
-     and length, followed immediately by the data.  The data has the
-     alignment constraints.  Therefore padding must be inserted in the
-     form of padding options before the new option. */
-  int data_offset = offset + sizeof (struct ip6_opt);
-  int npad = (align - data_offset % align) & (align - 1);
-
-  if (extbuf != NULL)
-    {
-      /* Now we can check whether the buffer is large enough.  */
-      if (data_offset + npad + len > extlen)
-	return -1;
-
-      add_padding (extbuf, offset, npad);
-
-      offset += npad;
-
-      /* Now prepare the option itself.  */
-      struct ip6_opt *opt = (struct ip6_opt *) ((uint8_t *) extbuf + offset);
-
-      opt->ip6o_type = type;
-      opt->ip6o_len = len;
-
-      *databufp = opt + 1;
-    }
-  else
-    offset += npad;
-
-  return offset + sizeof (struct ip6_opt) + len;
-}
-
-
-/* RFC 3542, 10.3
-
-   This function returns the updated total length taking into account
-   the final padding of the extension header to make it a multiple of
-   8 bytes.  If EXTBUF is not NULL the function also initializes the
-   option by inserting a Pad1 or PadN option of the proper length.  */
-int
-inet6_opt_finish (void *extbuf, socklen_t extlen, int offset)
-{
-  /* Check minimum offset.  */
-  if (offset < sizeof (struct ip6_hbh))
-    return -1;
-
-  /* Required padding at the end.  */
-  int npad = (8 - (offset & 7)) & 7;
-
-  if (extbuf != NULL)
-    {
-      /* Make sure the buffer is large enough.  */
-      if (offset + npad > extlen)
-	return -1;
-
-      add_padding (extbuf, offset, npad);
-    }
-
-  return offset + npad;
-}
-
-
-/* RFC 3542, 10.4
-
-   This function inserts data items of various sizes in the data
-   portion of the option.  VAL should point to the data to be
-   inserted.  OFFSET specifies where in the data portion of the option
-   the value should be inserted; the first byte after the option type
-   and length is accessed by specifying an offset of zero.  */
-int
-inet6_opt_set_val (void *databuf, int offset, void *val, socklen_t vallen)
-{
-  memcpy ((uint8_t *) databuf + offset, val, vallen);
-
-  return offset + vallen;
-}
-
-
-/* RFC 3542, 10.5
-
-   This function parses received option extension headers returning
-   the next option.  EXTBUF and EXTLEN specifies the extension header.
-   OFFSET should either be zero (for the first option) or the length
-   returned by a previous call to 'inet6_opt_next' or
-   'inet6_opt_find'.  It specifies the position where to continue
-   scanning the extension buffer.  */
-int
-inet6_opt_next (void *extbuf, socklen_t extlen, int offset, uint8_t *typep,
-		socklen_t *lenp, void **databufp)
-{
-  if (offset == 0)
-    offset = sizeof (struct ip6_hbh);
-  else if (offset < sizeof (struct ip6_hbh))
-    return -1;
-
-  while (offset < extlen)
-    {
-      struct ip6_opt *opt = (struct ip6_opt *) ((uint8_t *) extbuf + offset);
-
-      if (opt->ip6o_type == IP6OPT_PAD1)
-	/* Single byte padding.  */
-	++offset;
-      else if (opt->ip6o_type == IP6OPT_PADN)
-	offset += sizeof (struct ip6_opt) + opt->ip6o_len;
-      else
-	{
-	  /* Check whether the option is valid.  */
-	  offset += sizeof (struct ip6_opt) + opt->ip6o_len;
-	  if (offset > extlen)
-	    return -1;
-
-	  *typep = opt->ip6o_type;
-	  *lenp = opt->ip6o_len;
-	  *databufp = opt + 1;
-	  return offset;
-	}
-    }
-
-  return -1;
-}
-
-
-/* RFC 3542, 10.6
-
-   This function is similar to the previously described
-   'inet6_opt_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 extension header.  */
-int
-inet6_opt_find (void *extbuf, socklen_t extlen, int offset, uint8_t type,
-		socklen_t *lenp, void **databufp)
-{
-  if (offset == 0)
-    offset = sizeof (struct ip6_hbh);
-  else if (offset < sizeof (struct ip6_hbh))
-    return -1;
-
-  while (offset < extlen)
-    {
-      struct ip6_opt *opt = (struct ip6_opt *) ((uint8_t *) extbuf + offset);
-
-      if (opt->ip6o_type == IP6OPT_PAD1)
-	{
-	  /* Single byte padding.  */
-	  ++offset;
-	  if (type == IP6OPT_PAD1)
-	    {
-	      *lenp = 0;
-	      *databufp = (uint8_t *) extbuf + offset;
-	      return offset;
-	    }
-	}
-      else if (opt->ip6o_type != type)
-	offset += sizeof (struct ip6_opt) + opt->ip6o_len;
-      else
-	{
-	  /* Check whether the option is valid.  */
-	  offset += sizeof (struct ip6_opt) + opt->ip6o_len;
-	  if (offset > extlen)
-	    return -1;
-
-	  *lenp = opt->ip6o_len;
-	  *databufp = opt + 1;
-	  return offset;
-	}
-    }
-
-  return -1;
-}
-
-
-/* RFC 3542, 10.7
-
-   This function extracts data items of various sizes in the data
-   portion of the option.  */
-int
-inet6_opt_get_val (void *databuf, int offset, void *val, socklen_t vallen)
-{
-  memcpy (val, (uint8_t *) databuf + offset, vallen);
-
-  return offset + vallen;
-}