On 1/13/2014 12:01 AM, Jan Kaluza wrote: > Hi, > > this patchset against net-next (applies also to linux-next) adds 3 new types > of "Socket"-level control message (SCM_AUDIT, SCM_PROCINFO and SCM_CGROUP). How about the group list, while you're at it? > > Server-like processes in many cases need credentials and other > metadata of the peer, to decide if the calling process is allowed to > request a specific action, or the server just wants to log away this > type of information for auditing tasks. > > The current practice to retrieve such process metadata is to look that > information up in procfs with the $PID received over SCM_CREDENTIALS. > This is sufficient for long-running tasks, but introduces a race which > cannot be worked around for short-living processes; the calling > process and all the information in /proc/$PID/ is gone before the > receiver of the socket message can look it up. > > Changes introduced in this patchset can also increase performance > of such server-like processes, because current way of opening and > parsing /proc/$PID/* files is much more expensive than receiving these > metadata using SCM. > > Changes in v4: > - Rebased to work with the latest net-next tree > > Changes in v3: > - Better description of patches (Thanks to Kay Sievers) > > Changes in v2: > - use PATH_MAX instead of PAGE_SIZE in SCM_CGROUP patch > - describe each patch individually > > Jan Kaluza (3): > Send loginuid and sessionid in SCM_AUDIT > Send comm and cmdline in SCM_PROCINFO > Send cgroup_path in SCM_CGROUP > > include/linux/socket.h | 9 ++++++ > include/net/af_unix.h | 10 ++++++ > include/net/scm.h | 67 ++++++++++++++++++++++++++++++++++++++-- > net/core/scm.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++ > net/unix/af_unix.c | 70 ++++++++++++++++++++++++++++++++++++++++++ > 5 files changed, 237 insertions(+), 2 deletions(-) > _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/containers