4.4BSD/usr/share/man/cat3/getbsize.0

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

NNAAMMEE
     ggeettbbssiizzee - get user block size

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<ssttddlliibb..hh>>

     _c_h_a_r _*
     ggeettbbssiizzee(_i_n_t _*_h_e_a_d_e_r_l_e_n_p, _l_o_n_g _*_b_l_o_c_k_s_i_z_e_p);

DDEESSCCRRIIPPTTIIOONN
     The ggeettbbssiizzee 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 ggeettbbssiizzee function returns a pointer to a null-terminated string de-
     scribing the block size, something like ``1K-blocks''. The memory refer-
     enced by _h_e_a_d_e_r_l_e_n_p is filled in with the length of the string (not in-
     cluding the terminating null).  The memory referenced by _b_l_o_c_k_s_i_z_e_p 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.

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

HHIISSTTOORRYY
     The ggeettbbssiizzee function call appeared in 4.4BSD.

4.4BSD                           June 4, 1993                                1