psxtests/psxfile01/test_extend.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  *  @file
0005  *
0006  *  A test support function which extends the file to the specified
0007  *  length.  This handles the implied open(), lseek(), write(), and close()
0008  *  operations.
0009  *
0010  *  The defined behavior is a seek() followed by a write() extends the file
0011  *  and zero fills the new length part.
0012  */
0013
0014 /*
0015  *  COPYRIGHT (c) 1989-2012.
0016  *  On-Line Applications Research Corporation (OAR).
0017  *
0018  * Redistribution and use in source and binary forms, with or without
0019  * modification, are permitted provided that the following conditions
0020  * are met:
0021  * 1. Redistributions of source code must retain the above copyright
0022  *    notice, this list of conditions and the following disclaimer.
0023  * 2. Redistributions in binary form must reproduce the above copyright
0024  *    notice, this list of conditions and the following disclaimer in the
0025  *    documentation and/or other materials provided with the distribution.
0026  *
0027  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0028  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0029  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0030  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0031  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0032  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0033  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0034  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0035  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0036  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0037  * POSSIBILITY OF SUCH DAMAGE.
0038  */
0039
0040 #ifdef HAVE_CONFIG_H
0041 #include "config.h"
0042 #endif
0043
0044 #include <stdio.h>
0045
0046 #include <sys/types.h>
0047 #include <sys/stat.h>
0048 #include <fcntl.h>
0049 #include <unistd.h>
0050 #include <errno.h>
0051 #include <string.h>
0052 #include <ctype.h>
0053
0054 #include <pmacros.h>
0055
0056 /* forward declarations to avoid warnings */
0057 void test_extend(char *file, off_t  offset);
0058
0059 /*
0060  *  test_extend routine
0061  */
0062 void test_extend(
0063   char   *file,
0064   off_t  offset
0065 )
0066 {
0067   int   fd;
0068   int   status;
0069   char  c = 0;
0070
0071   fd = open( file, O_WRONLY );
0072   if ( fd == -1 ) {
0073     printf( "test_extend: open( %s ) failed : %s\n", file, strerror( errno ) );
0074     rtems_test_exit( 0 );
0075   }
0076
0077   status = lseek( fd, offset - 1, SEEK_SET );
0078   rtems_test_assert( status != -1 );
0079
0080   status = write( fd, &c, 1 );
0081   if ( status == -1 ) {
0082     printf( "test_extend: write( %s ) failed : %s\n", file, strerror( errno ) );
0083     rtems_test_exit( 0 );
0084   }
0085
0086   if ( status != 1 ) {
0087     printf( "test_extend: write( %s ) only wrote %d of %d bytes\n",
0088             file, status, 1 );
0089     rtems_test_exit( 0 );
0090   }
0091
0092   status = close( fd );
0093   rtems_test_assert( !status );
0094 }