getbsize man page on OpenBSD

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GETBSIZE(3)		  OpenBSD Programmer's Manual		   GETBSIZE(3)

NAME
     getbsize - get user block size

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".  The memory
     referenced by headerlenp is filled in with the length of the string (not
     including the terminating NUL byte).  The memory referenced by blocksizep
     is filled in with the 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.

OpenBSD 4.9			 May 31, 2007			   OpenBSD 4.9
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