getbsize man page on BSDi

getbsize man page on BSDi

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GETBSIZE(3)		    BSD 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 null-terminated string de-
     scribing the block size, something like ``1K-blocks''. The memory refer-
     enced by headerlenp is filled in with the length of the string (not in-
     cluding 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 call appeared in 4.4BSD.

BUGS
     The getbsize() function may not be safely called concurrently from multi-
     ple threads, e.g., the interfaces described by pthreads(3).

4.4BSD				 June 4, 1993				     1

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