CRC7(9) Basic Kernel Library Functions CRC7(9)NAME
crc7 - update the CRC7 for the data buffer
SYNOPSIS
u8 crc7(u8 crc, const u8 * buffer, size_t len);
ARGUMENTS
crc
previous CRC7 value
buffer
data pointer
len
number of bytes in the buffer
CONTEXT
any
DESCRIPTION
Returns the updated CRC7 value.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 CRC7(9)
Check Out this Related Man Page
ldns(3) Library Functions Manual ldns(3)NAME
ldns_buffer_limit, ldns_buffer_set_limit, ldns_buffer_capacity, ldns_buffer_set_capacity, ldns_buffer_reserve, ldns_buffer_at, ldns_buf-
fer_begin, ldns_buffer_end, ldns_buffer_current-
SYNOPSIS
#include <stdint.h>
#include <stdbool.h>
#include <ldns/ldns.h>
size_t ldns_buffer_limit(ldns_buffer *buffer);
void ldns_buffer_set_limit(ldns_buffer *buffer, size_t limit);
size_t ldns_buffer_capacity(ldns_buffer *buffer);
bool ldns_buffer_set_capacity(ldns_buffer *buffer, size_t capacity);
bool ldns_buffer_reserve(ldns_buffer *buffer, size_t amount);
uint8_t * ldns_buffer_at(const ldns_buffer *buffer, size_t at);
uint8_t * ldns_buffer_begin(const ldns_buffer *buffer);
uint8_t * ldns_buffer_end(ldns_buffer *buffer);
uint8_t * ldns_buffer_current(ldns_buffer *buffer);
DESCRIPTION
ldns_buffer_limit() returns the maximum size of the buffer param[in] buffer
Returns the size
ldns_buffer_set_limit() changes the buffer's limit. If the buffer's position is greater than the new limit the position is set to the
limit.
buffer: the buffer
limit: the new limit
ldns_buffer_capacity() returns the number of bytes the buffer can hold.
buffer: the buffer
Returns the number of bytes
ldns_buffer_set_capacity() changes the buffer's capacity. The data is reallocated so any pointers to the data may become invalid. The
buffer's limit is set to the buffer's new capacity.
buffer: the buffer
capacity: the capacity to use
Returns whether this failed or succeeded
ldns_buffer_reserve() ensures BUFFER can contain at least AMOUNT more bytes. The buffer's capacity is increased if necessary using buf-
fer_set_capacity().
The buffer's limit is always set to the (possibly increased) capacity.
buffer: the buffer
amount: amount to use
Returns whether this failed or succeeded
ldns_buffer_at() returns a pointer to the data at the indicated position.
buffer: the buffer
at: position
Returns the pointer to the data
ldns_buffer_begin() returns a pointer to the beginning of the buffer (the data at position 0).
buffer: the buffer
Returns the pointer
ldns_buffer_end() returns a pointer to the end of the buffer (the data at the buffer's limit).
buffer: the buffer
Returns the pointer
ldns_buffer_current() returns a pointer to the data at the buffer's current position.
buffer: the buffer
Returns the pointer
AUTHOR
The ldns team at NLnet Labs. Which consists out of Jelte Jansen and Miek Gieben.
REPORTING BUGS
Please report bugs to ldns-team@nlnetlabs.nl or in our bugzilla at http://www.nlnetlabs.nl/bugs/index.html
COPYRIGHT
Copyright (c) 2004 - 2006 NLnet Labs.
Licensed under the BSD License. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO
ldns_buffer. And perldoc Net::DNS, RFC1034, RFC1035, RFC4033, RFC4034 and RFC4035.
REMARKS
This manpage was automaticly generated from the ldns source code by use of Doxygen and some perl.
30 May 2006 ldns(3)