39 lines
736 B
C
39 lines
736 B
C
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/*
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* Write a file and make sure it is on disk.
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*/
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <io.h>
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char buf[512];
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void main()
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{
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int handle;
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int i;
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handle = creat( "file", S_IWRITE | S_IREAD );
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if( handle == -1 ) {
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perror( "Error creating file" );
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exit( EXIT_FAILURE );
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}
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for( i = 0; i < 255; ++i ) {
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memset( buf, i, sizeof( buf ) );
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if( write( handle, buf, sizeof(buf) ) != sizeof(buf) ) {
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perror( "Error writing file" );
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exit( EXIT_FAILURE );
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}
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}
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if( fsync( handle ) == -1 ) {
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perror( "Error sync'ing file" );
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exit( EXIT_FAILURE );
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}
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close( handle );
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exit( EXIT_SUCCESS );
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}
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