getbsize(3) - NetBSD Manual Pages

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GETBSIZE(3)             NetBSD 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 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

     df(1), du(1), ls(1), systat(1), environ(7)


HISTORY

     The getbsize function first appeared in 4.4BSD.

NetBSD 10.1                      May 30, 2003                      NetBSD 10.1