[Devel] [cr][GIT]linux-cr branch, ckpt-v16-dev, updated. v2.6.27-rc5-36014-g8a031aa

[orenl at cs.columbia.edu]

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       via  27099c13bee4a24d4f79f8911d71bc99ddde95d3 (commit)
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- Log -----------------------------------------------------------------
commit 8a031aa88271ac44e5574c15d82c21af98855876
Author: Dave Hansen <dave at linux.vnet.ibm.com>
Date:   Thu Jun 25 12:51:25 2009 -0700

    c/r: better file error debugging
    
    This should give a nice message with symbol names for when we have an
    open file that doesn't have an f_op->checkpoint.
    
    Something along the lines of:
    
    [1133:c/r:checkpoint_file] file operations have no checkpoint handler:tty_open+0x0/0x24
    
    Also add a debug message when hitting an unlinked file.
    
    Based on a patch by Dave Hansen.
    
    Signed-off-by: Oren Laadan <orenl at cs.columbia.edu>

commit 27099c13bee4a24d4f79f8911d71bc99ddde95d3
Author: Serge E. Hallyn <serue at us.ibm.com>
Date:   Fri Jun 26 15:06:43 2009 -0400

    cr: define CKPT_ARCH_NSIG for s390
    
    Also add a check for x86 and s390 in the hopes of catching any
    changes to NSIG which don't update CKPT_ARCH_NSIG.
    
    Signed-off-by: Serge E. Hallyn <serue at us.ibm.com>
    Acked-by: Oren Laadan <orenl at cs.columbia.edu>

commit fcb7a17df8c1b42346aab9fd5dd1af27beee2b39
Author: Oren Laadan <orenl at cs.columbia.edu>
Date:   Thu Jun 25 05:06:06 2009 -0400

    c/r: tighten ptrace checking for checkpoint to PTRACE_MODE_ATTACH
    
    Security modules distinguish reading of process state (via proc) from
    full ptrace access using the access mode: PTRACE_MODE_{READ,ATTACH}.
    
    Read access to /proc/pid/mem requires a full ptrace attach (for more
    details, see: http://lwn.net/Articles/282930/).
    
    Checkpoint needs access to full process state, including memory, so
    we require PTRACE_MODE_ATTACH.
    
    Signed-off-by: Oren Laadan <orenl at cs.columbia.edu>
    Acked-by: Serge Hallyn <serue at us.ibm.com>

-----------------------------------------------------------------------

Summary of changes:
 arch/s390/include/asm/checkpoint_hdr.h |    8 ++++++++
 arch/x86/include/asm/checkpoint_hdr.h  |    6 ++++++
 checkpoint/checkpoint.c                |    2 +-
 checkpoint/files.c                     |    8 ++++++--
 4 files changed, 21 insertions(+), 3 deletions(-)


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