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testData.c
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testData.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define O_ECRYPT 00000010
int main() {
char ip[50] = "name is piyush kansal fall 2011", op[69];
// Test for read only mode and reading from file
int i, fd = open( "exp4.txt", O_RDONLY | O_ECRYPT );
for( i = 0 ; i < 70 ; i++ )
op[i] = '\0';
lseek( fd, 10, SEEK_SET );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
lseek( fd, -60, SEEK_END );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
close(fd);
// Test for write only mode and reading from file
fd = open( "exp4.txt", O_WRONLY | O_ECRYPT );
for( i = 0 ; i < 70 ; i++ )
op[i] = '\0';
lseek( fd, 10, SEEK_SET );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
lseek( fd, -60, SEEK_END );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
close(fd);
// Test for invalid mode and reading from file
fd = open( "exp4.txt", O_WRONLY | O_RDWR | O_ECRYPT );
for( i = 0 ; i < 70 ; i++ )
op[i] = '\0';
lseek( fd, 10, SEEK_SET );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
lseek( fd, -60, SEEK_END );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
close(fd);
// Test for read write mode and reading from file
fd = open( "exp4.txt", O_RDWR | O_ECRYPT );
for( i = 0 ; i < 70 ; i++ )
op[i] = '\0';
lseek( fd, 10, SEEK_SET );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
lseek( fd, -60, SEEK_END );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
close(fd);
printf( "Opening 1" );
fd = open( "exp4.txt", O_WRONLY | O_ECRYPT );
for( i = 0 ; i < 70 ; i++ )
op[i] = '\0';
lseek( fd, 10, SEEK_SET );
strcpy( op, "Matthews is" );
printf( "Bytes written ::%d::\n", write( fd, op, 11 ) );
close(fd);
printf( "Opening 2" );
fd = open( "exp4.txt", O_RDONLY | O_ECRYPT );
for( i = 0 ; i < 70 ; i++ )
op[i] = '\0';
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
close(fd);
printf( "Opening 3" );
fd = open( "exp4.txt", O_RDWR | O_ECRYPT );
for( i = 0 ; i < 70 ; i++ )
op[i] = '\0';
lseek( fd, 10, SEEK_SET );
strcpy( op, "Matt Culver" );
printf( "Bytes written ::%d::\n", write( fd, op, 11 ) );
lseek( fd, 0, SEEK_SET );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
lseek( fd, 0, SEEK_SET );
strcpy( op, "SBU is an e" );
printf( "Bytes written ::%d::\n", write( fd, op, 11 ) );
close(fd);
printf( "Opening 4" );
fd = open( "exp4.txt", O_RDONLY | O_ECRYPT );
for( i = 0 ; i < 70 ; i++ )
op[i] = '\0';
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
printf( "O/P ::%s:: Bytes read ::%d::\n", op, read( fd, op, 10 ) );
close(fd);
fd = open( "exp5.txt", O_CREAT | O_RDWR | O_ECRYPT, S_IRWXU | S_IRWXG | S_IRWXO );
printf( "Bytes write ::%d::\n", write( fd, ip, 31 ) );
close(fd);
return 0;
}