Please note that the source code below is for the purpose of discussions and may not be identical to the code in your assignments. It would be a really bad idea (because you can lose a lot of points) to replace the code in your assignments with the code here! So, please do not replace the code in your assignments with the code here.

• Week 1 (PDF) - gdb, warmup #1

  Demo (for live discussion section):

  • linux-demo.txt
  • hello.c
  • crash.c
  • gdb-demo.txt

• Week 2 (PDF) - parsing text input in C, Unix/Linux commands
• Week 3 (PDF) - introduction to warmup #2
• Week 4 (PDF) - warmup #2 (catching SIGINT and pthread cancellation), introduction to kernel assignments (part 1)

  Code in slides:

  • defs.h
  • fork-wait.c
  • cat.c
  • redirect.c
  • thr-term.c
  • busywait.c
  • join.c
  • deadlock.c
  • trylock.c
  • whoopee.c
  • status-update.c
  • sigblock.c
  • sigwait.c
  • direct.c
  • cancel.c
  • three-threads.c

• Week 5 (PDF) - introduction to kernel assignments (part 2)
• Week 6 (PDF) - kernel 1, kmain.c, kmain_aux.c

  Code in slides:

  • kmain.c
  • kmain_aux.c

  Code (kernel)

  • kmain.c

• Week 7 (PDF) - more on kernel 1, faber_test.c

  Code (kernel)

  • faber_test.c

• Week 8 (PDF) - introduction to kernel 2

  Code (kernel):

  • namev.c (path name resolution code)

• Week 9 (TXT) - kernel 2 polymorphism, vfs.c, vnode.c, vn_special.c, file.c, vfs_syscall.c, vn_mmobj_ops.c, ramfs.c, vfstest.c, faber_fs_test

  Code (kernel):

  • vfs.c
  • vnode.c
  • vn_special.c
  • file.c
  • vfs_syscall.c
  • vn_mmobj_ops.c
  • ramfs.c (also look for any "_ops_t" in "kernel/include/fs/*.h", "kernel/fs/*.c" and "kernel/fs/ramfs/*.c")
  • vfstest.c
  • faber_fs_test.c

• Week 10 (PDF) - introduction to kernel 3, the elf32 loader

  Code (kernel):

  • elf32.c - the elf32 loader
  • exec.c
  • access.c

• Week 11 (PDF) - more on kernel 3, address space implementation (vmarea, mmobj, pframe, page table)

  Code (kernel):

  • vn_mmobj_ops.c - code for the mmobj inside a vnode
  • syscall.c (in the kernel)

  
  Code (user):

  • syscall.c (in the libc user space library)

  
  Kernel 3 FAQ:

  • meaning of pagenum

• Week 12 (TXT) - objdump, page fault handling, hello

  Code (kernel):

  • pagefault.c
  • syscall.c (in the kernel)
  • vn_mmobj_ops.c - code for the mmobj inside a vnode

  
  Code (user):

  • hello.c
  • syscall.c (in the libc user space library)

  
  Kernel 3 FAQ:

  • handle the first page fault
  • meaning of pagenum
  • page faults

  
  Useful Linux commands:

      objdump --disassemble --section=".text" user/usr/bin/hello.exec
      objdump --disassemble --section=".text" -S user/usr/bin/hello.exec
      objdump --headers user/usr/bin/hello.exec
      xxd -g 1 user/usr/bin/hello.exec

  Useful GDB commands:

      add-symbol-file user/usr/bin/hello.exec 0x08048094
      b __libc_static_entry
      b main
      b *0x12345678
      layout asm
      layout next
      si
      info registers
      kernel info vmmap_mapping_info curproc->p_vmmap

• Week 13 (TXT) - fork(), user space shell

  Code (user):

  • fork-and-wait.c
  • /sbin/init.c

  
  Kernel 3 FAQ:

  • do_fork()
  • "/sbin/init" not working

  Remaining user space programs:

  Code (user):

  • memtest.c
  • eatmem.c
  • forkbomb.c

  
  Kernel 3 FAQ:

  • dynamic region and do_brk()
  • make forkbomb run forever

• Week 14 - (no discussion section this week)
• Week 15 - (no discussion section this week)

Week #

Quiz #

Date

Coverage

1

Quiz 0

1/17

Lectures 1/2, Week 1 discussion

2

Quiz 1

1/24

Lectures 3/4, Week 2 discussion

3

 - 

1/31

no quiz (warmup1 due on Fri)

4

Quiz 2

2/7

Lectures 5/6/7/8, Weeks 3/4 discussion

5

Quiz 3

2/14

Lectures 9/10, Week 5 discussion

6

 - 

2/21

no quiz (warmup2 due on Fri)

7

Quiz 4

2/28

Lectures 11/12/13/14, Weeks 6/7 discussion

8

Quiz 5

3/7

Lectures 15/16

9

 - 

3/14

no quiz (kernel1 due on Fri)

 - 

 - 

3/21

no quiz (spring recess)

10

 - 

3/28

no quiz (Midterm Exam on Wed)

11

Quiz 6

4/4

Lectures 17/18/19/20, Week 8/9 discussion

12

 - 

4/11

no quiz (kernel2 due on Fri)

13

Quiz 7

4/18

Lectures 21/22/23/24, Weeks 10/11 discussions

14

 - 

4/25

no quiz

15

 - 

5/2

no quiz (kernel3 due on Fri)