test9.data

操作系统课内实验部分

// test9.data:  Will check miscellaneous error conditions -- such as using
// an incorrect file descriptor, trying to access a non-existent file,
// seeking to a negative position, etc.

// 1. Format the disk with 100 blocks total.
formatDisk 100 10

// 2. Create 3 basic files
file1 = create
inum1 = inumber file1
write file1 Names_ 512

file2 = create
inum2 = inumber file2
write file2 Names_ 512

file3 = create
inum3 = inumber file3
write file3 Names_ 512

// 3. Delete the second file
close file2
delete inum2

// 4. Access the second file with a seek (ERROR)
seek file2 1000 0

// 5. Write to the second file (ERROR)
write file2 Checkers_ 1000

// 6. Read from the second file (ERROR)
read file2 20

// 7. Close the second file and delete it again (ERROR -- though delete 
//    may just return 0)
close file2
delete inum2

// 8. Access a negative file descriptor (ERROR)
seek -1 1000 10

// 9. Access a free file descriptor (ERROR)
write 13 Bonzo_ 50

// 10. Access an illegal file descriptor (ERROR)
write 30 Socks_ 50

// 11. Seek to a negative position (ERROR)
seek file1 -1000 0
seek file1 -1000 1
seek file1 -1000 2

// 12. Open non-existent files (ERROR)
open 21
open 0
open -1

// 13. Close non-existent files (ERROR)
close 21
close -1

// 14. Do an illegal format
format 10 100

// 14. Shutdown the system and quit
shutdown
quit