X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=gnu%2Ffileblocks.c;fp=gnu%2Ffileblocks.c;h=77717c8ccbc2543fb1dab71d1a248bfebaa947b0;hb=22f1eb8bc17e5be72dd23d42d6aaa60196ac22e6;hp=0000000000000000000000000000000000000000;hpb=00fa13ff3f2d5b6e2a94c5e948c38616ff7ad37a;p=debian%2Ftar diff --git a/gnu/fileblocks.c b/gnu/fileblocks.c new file mode 100644 index 00000000..77717c8c --- /dev/null +++ b/gnu/fileblocks.c @@ -0,0 +1,76 @@ +/* -*- buffer-read-only: t -*- vi: set ro: */ +/* DO NOT EDIT! GENERATED AUTOMATICALLY! */ +/* Convert file size to number of blocks on System V-like machines. + + Copyright (C) 1990, 1997-1999, 2004-2006, 2009-2010 Free Software + Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +/* Written by Brian L. Matthews, blm@6sceng.UUCP. */ + +#include + +#include + +#if HAVE_SYS_PARAM_H +# include +#endif + +#if !HAVE_STRUCT_STAT_ST_BLOCKS && !defined _POSIX_SOURCE && defined BSIZE + +# include + +# ifndef NINDIR + +# if defined __DJGPP__ +typedef long daddr_t; /* for disk address */ +# endif + +/* Some SysV's, like Irix, seem to lack this. Hope it's correct. */ +/* Number of inode pointers per indirect block. */ +# define NINDIR (BSIZE / sizeof (daddr_t)) +# endif /* !NINDIR */ + +/* Number of direct block addresses in an inode. */ +# define NDIR 10 + +/* Return the number of 512-byte blocks in a file of SIZE bytes. */ + +off_t +st_blocks (off_t size) +{ + off_t datablks = size / 512 + (size % 512 != 0); + off_t indrblks = 0; + + if (datablks > NDIR) + { + indrblks = (datablks - NDIR - 1) / NINDIR + 1; + + if (datablks > NDIR + NINDIR) + { + indrblks += (datablks - NDIR - NINDIR - 1) / (NINDIR * NINDIR) + 1; + + if (datablks > NDIR + NINDIR + NINDIR * NINDIR) + indrblks++; + } + } + + return datablks + indrblks; +} +#else +/* This declaration is solely to ensure that after preprocessing + this file is never empty. */ +typedef int textutils_fileblocks_unused; +#endif