GETBSIZE(3) BSD Library Functions Manual GETBSIZE(3)NAMEgetbsize — get user block size
LIBRARY
Standard C Library (libc, -lc)
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 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 ALSOdf(1), du(1), ls(1), systat(1), environ(7)HISTORY
The getbsize function first appeared in 4.4BSD.
BSD May 30, 2003 BSD