athlohangade / lseek-in-xv6

This project is about implementation of lseek system call in xv6, a unix based operating system developed by MIT

lseek-in-xv6

This repo is about implementation of lseek system call in xv6 OS. The testing is done through 2 programs.

Program1 :

• Usage : Run qemu and enter command in following format :

  program1 filename offset length string

  Eg: program1 hello.txt 3 15 name is Atharva.

  This will match the string 'name is Atharva' with data from offset 3 in file hello.txt and print whether string is matched or not

• For now two text files are added for testing, namely hello.txt and some_info.txt

Program2 :

• Usage : Run qemu and enter command in following format :

  program2 filename

  Eg: program2 some_info.txt

• The program2 will divide the data from some_info.txt into 10 chunks of same size.

• The filelength must be multiple of 10 for correct results. This is because the chunks are written to file copy in random order and if there is even one chunk with different size than others then it may overwrite the previously written data by other chunk as the order is random.

• The program2 prints the length of the file given as input and the length of the copy file after writing into it in random order. The sizes of two files should be same.

• Also the program2 prints the content of both the file to ensure the correctness of the test.