psxtests/psxfile01/test_write.c

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