2009-03-05 17:50:12

by Serge E. Hallyn

Subject: [PATCH 1/1] checkpoint: define pid==0 as self-checkpoint

[ this is on top of Dave's version of Oren's patchset, i.e.
http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/daveh/linux-2.6-cr.git;a=shortlog;h=dave-v13.4 ]

Define pid=0 when calling sys_checkpoint as asking for
a self-checkpoint.

Signed-off-by: Serge E. Hallyn <[email protected]>
---
checkpoint/sys.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/checkpoint/sys.c b/checkpoint/sys.c
index 4a51ed3..acc5121 100644
--- a/checkpoint/sys.c
+++ b/checkpoint/sys.c
@@ -224,6 +224,8 @@ asmlinkage long sys_checkpoint(pid_t pid, int fd, unsigned long flags)
if (flags)
return -EINVAL;

+ if (pid == 0)
+ pid = current->pid;
ctx = cr_ctx_alloc(fd, flags | CR_CTX_CKPT);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
--
1.5.4.3

2009-03-05 18:23:36

by Dan Smith

Subject: Re: [PATCH 1/1] checkpoint: define pid==0 as self-checkpoint

SH> Define pid=0 when calling sys_checkpoint as asking for a
SH> self-checkpoint.

Works for me (of course).

--
Dan Smith
IBM Linux Technology Center
email: [email protected]