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resolv: Move ns_name_compress into its own file and into libc

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And reformat to GNU style.

The symbol was moved using scripts/move-symbol-to-libc.py.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2021-07-19 07:55:27 +02:00
parent 7ed1ac6da3
commit 13e1f86706
69 changed files with 122 additions and 60 deletions
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27
resolv/ns_name.c
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@@ -89,33 +89,6 @@ ns_name_ntol(const u_char *src, u_char *dst, size_t dstsiz)
return (dn - dst);
}
/*%
* Compress a domain name into wire format, using compression pointers.
*
* return:
*\li Number of bytes consumed in `dst' or -1 (with errno set).
*
* notes:
*\li 'dnptrs' is an array of pointers to previous compressed names.
*\li dnptrs[0] is a pointer to the beginning of the message.
*\li The list ends with NULL. 'lastdnptr' is a pointer to the end of the
* array pointed to by 'dnptrs'. Side effect is to update the list of
* pointers for labels inserted into the message as we compress the name.
*\li If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr'
* is NULL, we don't update the list.
*/
int
ns_name_compress(const char *src, u_char *dst, size_t dstsiz,
const u_char **dnptrs, const u_char **lastdnptr)
{
u_char tmp[NS_MAXCDNAME];
if (ns_name_pton(src, tmp, sizeof tmp) == -1)
return (-1);
return (ns_name_pack(tmp, dst, dstsiz, dnptrs, lastdnptr));
}
libresolv_hidden_def (ns_name_compress)
/*%
* Reset dnptrs so that there are no active references to pointers at or
* after src.