test4.data

操作系统课内实验部分

// test4.data:  Test of indirect blocks

// Format the disk with 100 blocks total, of which 10 are inode blocks
formatDisk 100 10

// Create a file
file1 = create

// Write some data to various pages of the file

// Block 9
seek file1 4608 0
write file1 A 512
// Block 10
seek file1 5120 0
write file1 B 512

// Block 137
seek file1 70144 0
write file1 B 512
// Block 138
seek file1 70656 0
write file1 C 512

// Block 16521
seek file1 8458752 0
write file1 C 512
// Block 16522
seek file1 8459264 0
write file1 D 512

// Read back data overlapping block boundaries

// Blocks 9 and 10
seek file1 5110 0
read file1 20
// Blocks 137 and 138
seek file1 70646 0
read file1 20
// Blocks 16521 and 16522
seek file1 8459254 0
read file1 20

// Shut down and quit
shutdown
quit