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Subject[RFC][PATCH 4/4] introduce sys_checkpoint and sys_restore
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From: Oren Laadan <orenl@cs.columbia.edu>

Create trivial sys_checkpoint and sys_restore system calls. They will
enable to checkpoint and restart an entire container, to and from a
checkpoint image file.

First create a template for both syscalls: they take a file descriptor
(for the image file) and flags as arguments. For sys_checkpoint the
first argument identifies the target container; for sys_restart it will
identify the checkpoint image.

Signed-off-by: Oren Laadan <orenl@cs.columbia.edu>

---
linux-2.6.git-dave/arch/x86/kernel/syscall_table_32.S | 2 ++
linux-2.6.git-dave/include/asm-x86/unistd_32.h | 2 ++
2 files changed, 4 insertions(+)
diff -puN arch/x86/kernel/syscall_table_32.S~introduce_sys_checkpoint_and_sys_restore arch/x86/kernel/syscall_table_32.S
--- linux-2.6.git/arch/x86/kernel/syscall_table_32.S~introduce_sys_checkpoint_and_sys_restore 2008-08-07 15:38:04.000000000 -0700
+++ linux-2.6.git-dave/arch/x86/kernel/syscall_table_32.S 2008-08-07 15:38:04.000000000 -0700
@@ -326,3 +326,5 @@ ENTRY(sys_call_table)
.long sys_fallocate
.long sys_timerfd_settime /* 325 */
.long sys_timerfd_gettime
+ .long sys_checkpoint
+ .long sys_restart
diff -puN include/asm-x86/unistd_32.h~introduce_sys_checkpoint_and_sys_restore include/asm-x86/unistd_32.h
--- linux-2.6.git/include/asm-x86/unistd_32.h~introduce_sys_checkpoint_and_sys_restore 2008-08-07 15:38:04.000000000 -0700
+++ linux-2.6.git-dave/include/asm-x86/unistd_32.h 2008-08-07 15:38:04.000000000 -0700
@@ -332,6 +332,8 @@
#define __NR_fallocate 324
#define __NR_timerfd_settime 325
#define __NR_timerfd_gettime 326
+#define __NR_checkpoint 327
+#define __NR_restart 328

#ifdef __KERNEL__

diff -puN Makefile~introduce_sys_checkpoint_and_sys_restore Makefile
_

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