NAME
getbsize —
get user block size
LIBRARY
library “libc”
SYNOPSIS
#include
<stdlib.h>
char *
getbsize(int
*headerlenp, long
*blocksizep);
DESCRIPTION
Thegetbsize 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 NUL terminated string describing the block size,
something like “1K-blocks”. If the
headerlenp parameter is not
NULL the memory referenced by
headerlenp is filled in with the length of the string
(not including the terminating NUL). If the
blocksizep parameter is not
NULL the memory referenced by
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.
SEE ALSO
HISTORY
The getbsize function first appeared in
4.4BSD.