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Date: Wed, 20 Aug 2008 12:26:03 -0700 From: Dave Hansen <dave@...ux.vnet.ibm.com> To: arnd@...db.de Cc: orenl@...columbia.edu, jeremy@...p.org, containers@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, Dave Hansen <dave@...ux.vnet.ibm.com> Subject: [RFC v2][PATCH 5/9] Create trivial sys_checkpoint and sys_restore system calls From: Oren Laadan <orenl@...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@...columbia.edu> --- 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 _ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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