We need this functionality for checkpointing processes. Now some parts are dumped with help PTRACE_SEIZE. Parasite code is injected to process and it collects information. This code should save data to somewhere. I want to suggest a scheme, when a dumper creates file descriptor and attaches it to a target process, then execute parasite code, which closes this descriptor at the end. We can't create unix sockets or open files, because a process may be in another namespaces. Signed-off-by: Andrew Vagin <avagin@xxxxxxxxxx> Andrew Vagin (2): fs: add ability attaching and allocating fd for non current tasks ptrace: add ability to attach a file descriptor to another process fs/file.c | 9 +++++++-- fs/open.c | 9 +++++++-- include/linux/file.h | 4 ++++ include/linux/ptrace.h | 1 + kernel/ptrace.c | 27 +++++++++++++++++++++++++++ 5 files changed, 46 insertions(+), 4 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
