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GETBSIZE(3)              BSD Library Functions Manual              GETBSIZE(3)

NAME
     getbsize -- 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 null-terminated string describing the block size, some-thing something
     thing like ``1K-blocks''.  The memory referenced by headerlenp is filled in with the length of the
     string (not including the terminating 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
     df(1), du(1), ls(1), systat(1), environ(7)

HISTORY
     The getbsize() function first appeared in 4.4BSD.

BSD                              June 4, 1993                              BSD