From: Oren Laadan <[EMAIL PROTECTED]>
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 <[EMAIL PROTECTED]>
---
oren-cr.git-dave/arch/x86/kernel/syscall_table_32.S | 2 ++
oren-cr.git-dave/include/asm-x86/unistd_32.h | 2 ++
oren-cr.git-dave/include/linux/syscalls.h | 3 +++
3 files changed, 7 insertions(+)
diff -puN
arch/x86/kernel/syscall_table_32.S~0006-Create-trivial-sys_checkpoint-and-sys_restore-system
arch/x86/kernel/syscall_table_32.S
---
oren-cr.git/arch/x86/kernel/syscall_table_32.S~0006-Create-trivial-sys_checkpoint-and-sys_restore-system
2008-08-20 12:12:50.000000000 -0700
+++ oren-cr.git-dave/arch/x86/kernel/syscall_table_32.S 2008-08-20
12:12:50.000000000 -0700
@@ -332,3 +332,5 @@ ENTRY(sys_call_table)
.long sys_dup3 /* 330 */
.long sys_pipe2
.long sys_inotify_init1
+ .long sys_checkpoint
+ .long sys_restart
diff -puN
include/asm-x86/unistd_32.h~0006-Create-trivial-sys_checkpoint-and-sys_restore-system
include/asm-x86/unistd_32.h
---
oren-cr.git/include/asm-x86/unistd_32.h~0006-Create-trivial-sys_checkpoint-and-sys_restore-system
2008-08-20 12:12:50.000000000 -0700
+++ oren-cr.git-dave/include/asm-x86/unistd_32.h 2008-08-20
12:12:50.000000000 -0700
@@ -338,6 +338,8 @@
#define __NR_dup3 330
#define __NR_pipe2 331
#define __NR_inotify_init1 332
+#define __NR_checkpoint 333
+#define __NR_restart 334
#ifdef __KERNEL__
diff -puN
include/linux/syscalls.h~0006-Create-trivial-sys_checkpoint-and-sys_restore-system
include/linux/syscalls.h
---
oren-cr.git/include/linux/syscalls.h~0006-Create-trivial-sys_checkpoint-and-sys_restore-system
2008-08-20 12:12:50.000000000 -0700
+++ oren-cr.git-dave/include/linux/syscalls.h 2008-08-20 12:12:50.000000000
-0700
@@ -625,4 +625,7 @@ asmlinkage long sys_fallocate(int fd, in
int kernel_execve(const char *filename, char *const argv[], char *const
envp[]);
+asmlinkage long sys_checkpoint(pid_t pid, int fd, unsigned long flags);
+asmlinkage long sys_restart(int crid, int fd, unsigned long flags);
+
#endif
_
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