getbsize - get user block size
#include <stdlib.h>
char *
getbsize(int *headerlenp, long *blocksizep);
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, something like "1K-blocks". The
memory referenced
by headerlenp is filled in with the length of the
string (not including
the terminating null 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.
df(1), du(1), ls(1), systat(1), environ(7)
The getbsize function first appeared in 4.4BSD.
OpenBSD 3.6 June 4, 1993
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