This patchset includes following function points: 1: Let pipe_type core_pattern write dump into container's rootfs done by: [PATCH v2 1/2] Limit dump_pipe program's permission to init for container 2: Make separate core_pattern setting for each container done by: [PATCH v2 2/2] Make core_pattern support namespace 3: Compatibility with current system also included in: [PATCH v2 2/2] Make core_pattern support namespace If container hadn't change core_pattern setting, it will keep same setting with host. Test: 1: Pass a test script for each function of this patchset # ./test_host Set file core_pattern: OK ./test_host: line 41: 4237 Segmentation fault (core dumped) "$SCRIPT_BASE_DIR"/make_dump Checking dumpfile: OK Set file core_pattern: OK ./test_host: line 41: 4240 Segmentation fault (core dumped) "$SCRIPT_BASE_DIR"/make_dump Checking dump_pipe triggered: OK Checking rootfs: OK Checking dumpfile: OK Checking namespace: OK Checking process list: OK Checking capabilities: OK # # /test Segmentation fault (core dumped) -rw-r--r-- 1 root root 123 Aug 2 09:01 /tmp/dumptest_cap_init -rw-r--r-- 1 root root 123 Aug 2 09:01 /tmp/dumptest_cap_self -rw-r--r-- 1 root root 5 Aug 2 09:01 /tmp/dumptest_cg_cgpid -rw-r--r-- 1 root root 327680 Aug 2 09:01 /tmp/dumptest_guestdump_11_524288000_16_0_0_1470128516 -rw-r--r-- 1 root root 123 Aug 2 09:01 /tmp/dumptest_ns_init -rw-r--r-- 1 root root 123 Aug 2 09:01 /tmp/dumptest_ns_self -rw-r--r-- 1 root root 288 Aug 2 09:01 /tmp/dumptest_psresult -rw-r--r-- 1 root root 1728 Aug 2 09:01 /tmp/dumptest_rootfs Checking dump_pipe triggered: OK Checking rootfs: OK Checking dumpfile: OK Checking namespace: OK Checking process list: OK Checking cg pids: OK Checking capabilities: OK 2: Pass other test(which is not easy to do in script) by hand. Changelog v1(RFC)->v2: 1: Add [PATCH 2/2] which was todo in [RFC v1]. 2: Pass a test script for each function. 3: Rebase on top of v4.7. Suggested-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx> Suggested-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Signed-off-by: Zhao Lei <zhaolei@xxxxxxxxxxxxxx> Zhao Lei (2): Limit dump_pipe program's permission to init for container Make core_pattern support namespace fs/coredump.c | 110 +++++++++++++++++++++++++++++++++++++++--- include/linux/binfmts.h | 1 + include/linux/pid_namespace.h | 3 ++ kernel/pid.c | 2 + kernel/pid_namespace.c | 2 + kernel/sysctl.c | 50 +++++++++++++++++-- 6 files changed, 156 insertions(+), 12 deletions(-) -- 1.8.5.1 _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/containers
