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Diffstat (limited to 'lib/dns/include/dns/fixedname.h')
-rw-r--r-- | lib/dns/include/dns/fixedname.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/lib/dns/include/dns/fixedname.h b/lib/dns/include/dns/fixedname.h new file mode 100644 index 0000000..5a2aaf3 --- /dev/null +++ b/lib/dns/include/dns/fixedname.h @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 1999-2001 Internet Software Consortium. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +/* $Id: fixedname.h,v 1.19 2007/06/19 23:47:16 tbox Exp $ */ + +#ifndef DNS_FIXEDNAME_H +#define DNS_FIXEDNAME_H 1 + +/***** + ***** Module Info + *****/ + +/*! \file dns/fixedname.h + * \brief + * Fixed-size Names + * + * dns_fixedname_t is a convenience type containing a name, an offsets table, + * and a dedicated buffer big enough for the longest possible name. + * + * MP: + *\li The caller must ensure any required synchronization. + * + * Reliability: + *\li No anticipated impact. + * + * Resources: + *\li Per dns_fixedname_t: + *\code + * sizeof(dns_name_t) + sizeof(dns_offsets_t) + + * sizeof(isc_buffer_t) + 255 bytes + structure padding + *\endcode + * + * Security: + *\li No anticipated impact. + * + * Standards: + *\li None. + */ + +/***** + ***** Imports + *****/ + +#include <isc/buffer.h> + +#include <dns/name.h> + +/***** + ***** Types + *****/ + +struct dns_fixedname { + dns_name_t name; + dns_offsets_t offsets; + isc_buffer_t buffer; + unsigned char data[DNS_NAME_MAXWIRE]; +}; + +#define dns_fixedname_init(fn) \ + do { \ + dns_name_init(&((fn)->name), (fn)->offsets); \ + isc_buffer_init(&((fn)->buffer), (fn)->data, \ + DNS_NAME_MAXWIRE); \ + dns_name_setbuffer(&((fn)->name), &((fn)->buffer)); \ + } while (0) + +#define dns_fixedname_invalidate(fn) \ + dns_name_invalidate(&((fn)->name)) + +#define dns_fixedname_name(fn) (&((fn)->name)) + +#endif /* DNS_FIXEDNAME_H */ |