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getbsize (3)

>> getbsize (3) ( FreeBSD man: Библиотечные вызовы )

BSD mandoc

NAME



getbsize

 - get user block size

LIBRARY

Lb libc

SYNOPSIS

#include <stdlib.h>
char * getbsize (int *headerlenp long *blocksizep);

DESCRIPTION

The getbsize ();
function determines the user's preferred block size based on the value of the ``BLOCKSIZE'' environment variable; see environ(7) for details on its use and format.

The getbsize ();
function returns a pointer to a null-terminated string describing the block size, something like ``1K-blocks'' The memory referenced by Fa headerlenp is filled in with the length of the string (not including the terminating null). The memory referenced by Fa blocksizep is filled in with block size, in bytes.

If the user's block size is unreasonable, a warning message is written to standard error and the returned information reflects a block size of 512 bytes.

HISTORY

The getbsize ();
function first appeared in BSD 4.4

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