Stanislaw, This patch series is an API change. Could you please make sure that all future revisions CC linux-api@xxxxxxxxxxxxxxx, as per Documentation/SubmitChecklist. Cheers, Michael On Thu, Oct 18, 2012 at 12:22 PM, Stanislav Kinsbursky <skinsbursky@xxxxxxxxxxxxx> wrote: > v7: > 1) Added comments in places, when behiviour is not obvious. > 2) Compilation fixed for compat layer > 3) test updated to use existent header files (instead of hard-coding new > defines in case of absence). > 4) comment fixed in qlge driver > > v6: > 1) rebased on 3.7-rc1 > > v5: > 1) Several define-dependent compile bugs fixed > 2) IPC message copy test updated > 3) A couple of minor fixes. > 4) Qlogic driver update: rename of its internal SEM_SET define into SEM_INIT > (compile error). > > v4: > 1) If MSG_COPY flag is specified, then "mtype" is not a type, but message > number to copy. > 2) MSG_SET_COPY logic for sys_msgctl() was removed. > > v3: > 1) Copy messages to user-space under spinlock was replaced by allocation of > dummy message before queue lock and then copy of desired message to the dummy > one instead of unlinking it from queue list. > I.e. the message queue copy logic was changed: messages can be retrived one by > one (instead of receiving of the whole list at once). > > This patch set is aimed to provide additional functionality for all IPC > objects, > which is required for migration of these objects by user-space > checkpoint/restore utils (CRIU). > > The main problem here was impossibility to set up object id. This patch set > solves the problem in two steps: > 1) Makes it possible to create new object (shared memory, semaphores set or > messages queue) with ID, equal to passed key. > 2) Makes it possible to change existent object key. > > Another problem was to peek messages from queues without deleting them. > This was achived by introducing of new MSG_COPY flag for sys_msgrcv(). If > MSG_COPY flag is set, then msgtyp is interpreted as message number. > > The following series implements... > > --- > > Stanislav Kinsbursky (10): > ipc: remove forced assignment of selected message > ipc: "use key as id" functionality for resource get system call introduced > ipc: segment key change helper introduced > ipc: add new SHM_SET command for sys_shmctl() call > ipc: add new MSG_SET command for sys_msgctl() call > qlge driver: rename internal SEM_SET macro to SEM_INIT > ipc: add new SEM_SET command for sys_semctl() call > IPC: message queue receive cleanup > IPC: message queue copy feature introduced > test: IPC message queue copy feture test > > > drivers/net/ethernet/qlogic/qlge/qlge.h | 4 > drivers/net/ethernet/qlogic/qlge/qlge_main.c | 16 +- > include/linux/msg.h | 5 - > include/uapi/linux/ipc.h | 1 > include/uapi/linux/msg.h | 2 > include/uapi/linux/sem.h | 1 > include/uapi/linux/shm.h | 1 > ipc/compat.c | 54 +++--- > ipc/msg.c | 117 ++++++++++--- > ipc/msgutil.c | 38 ++++ > ipc/sem.c | 15 +- > ipc/shm.c | 18 ++ > ipc/util.c | 67 +++++++- > ipc/util.h | 6 + > security/selinux/hooks.c | 3 > security/smack/smack_lsm.c | 3 > tools/testing/selftests/ipc/Makefile | 25 +++ > tools/testing/selftests/ipc/msgque.c | 231 ++++++++++++++++++++++++++ > 18 files changed, 526 insertions(+), 81 deletions(-) > create mode 100644 tools/testing/selftests/ipc/Makefile > create mode 100644 tools/testing/selftests/ipc/msgque.c > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface"; http://man7.org/tlpi/ -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
