68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/*
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Copyright (C) 2001 Dmitry V. Levin <ldv@altlinux.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/stat.h>
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extern const char *__progname;
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__attribute__ ((__noreturn__))
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static void usage( void )
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{
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fprintf( stderr, "usage: %s filename [blocksize]\n"
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"\tfilename - stat this file\n"
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"\tblocksize - set size of block to this value, overriding default\n",
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__progname );
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exit( EXIT_FAILURE );
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}
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int main( int ac, const char *av[] )
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{
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const char *fname;
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unsigned long bsize = 0;
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struct stat stb;
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if ( (ac < 2) || (ac > 3) )
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usage();
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fname = av[1];
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if ( ac > 2 )
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{
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bsize = atol( av[2] );
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if ( bsize < 1 )
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usage();
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}
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if ( stat( fname, &stb ) < 0 )
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{
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fprintf( stderr, "%s: %s: %s\n", __progname, fname, strerror(errno) );
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exit( EXIT_FAILURE );
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}
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if ( !bsize )
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bsize = stb.st_blksize;
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printf( "%lu\n", (bsize < 2) ? stb.st_size : ((bsize - 1 + stb.st_size)/bsize) );
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return 0;
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}
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