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Author SHA1 Message Date
0x0916
5107af320a seccomp: export the seccomp filter after load it into kernel successful 
when the log level is TRACE, this patch export the seccomp
filter to log file.

the ouput of `seccomp_export_pfc()` is human readable and this feature
is useful for user to make sure their `seccomp configuration file` is
right.

Output for he default ubuntu container's seccomp filter is the
following:

```
      lxc-start ubuntu 20170520024159.412 INFO     lxc_apparmor - lsm/apparmor.c:apparmor_process_label_set:238 - changed apparmor profile to lxc-container-default-cgns
if ($arch == 3221225534)
  # filter for syscall "finit_module" (313) [priority: 65535]
  if ($syscall == 313)
    action ERRNO(1);
  # filter for syscall "open_by_handle_at" (304) [priority: 65535]
  if ($syscall == 304)
    action ERRNO(1);
  # filter for syscall "kexec_load" (246) [priority: 65535]
  if ($syscall == 246)
    action ERRNO(1);
  # filter for syscall "delete_module" (176) [priority: 65535]
  if ($syscall == 176)
    action ERRNO(1);
  # filter for syscall "init_module" (175) [priority: 65535]
  if ($syscall == 175)
    action ERRNO(1);
  # filter for syscall "umount2" (166) [priority: 65533]
  if ($syscall == 166)
    if ($a1.hi32 & 0x00000000 == 0)
      if ($a1.lo32 & 0x00000001 == 1)
        action ERRNO(13);
  # default action
  action ALLOW;
if ($arch == 1073741827)
  # filter for syscall "finit_module" (350) [priority: 65535]
  if ($syscall == 350)
    action ERRNO(1);
  # filter for syscall "open_by_handle_at" (342) [priority: 65535]
  if ($syscall == 342)
    action ERRNO(1);
  # filter for syscall "kexec_load" (283) [priority: 65535]
  if ($syscall == 283)
    action ERRNO(1);
  # filter for syscall "delete_module" (129) [priority: 65535]
  if ($syscall == 129)
    action ERRNO(1);
  # filter for syscall "init_module" (128) [priority: 65535]
  if ($syscall == 128)
    action ERRNO(1);
  # filter for syscall "umount2" (52) [priority: 65534]
  if ($syscall == 52)
    if ($a1 & 0x00000001 == 1)
      action ERRNO(13);
  # default action
  action ALLOW;
if ($arch == 3221225534)
  # filter for syscall "kexec_load" (1073742352) [priority: 65535]
  if ($syscall == 1073742352)
    action ERRNO(1);
  # filter for syscall "finit_module" (1073742137) [priority: 65535]
  if ($syscall == 1073742137)
    action ERRNO(1);
  # filter for syscall "open_by_handle_at" (1073742128) [priority: 65535]
  if ($syscall == 1073742128)
    action ERRNO(1);
  # filter for syscall "delete_module" (1073742000) [priority: 65535]
  if ($syscall == 1073742000)
    action ERRNO(1);
  # filter for syscall "init_module" (1073741999) [priority: 65535]
  if ($syscall == 1073741999)
    action ERRNO(1);
  # filter for syscall "umount2" (1073741990) [priority: 65534]
  if ($syscall == 1073741990)
    if ($a1 & 0x00000001 == 1)
      action ERRNO(13);
  # default action
  action ALLOW;
action KILL;
      lxc-start ubuntu 20170520024159.412 NOTICE   lxc_start - start.c:start:1470 - Exec'ing "/sbin/init".
```

Signed-off-by: 0x0916 <w@laoqinren.net>
 2017-06-06 09:45:31 +08:00
Stéphane Graber
9795e880ae Merge pull request #1613 from brauner/2017-06-03/af_unix 
abstract lxc_abstract_unix_{send,recv}_fd, bugfixes, and improvements
 2017-06-05 19:52:46 -04:00
Christian Brauner
5b8819a714
lxc-opensuse: add Tumbleweed as supported release 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-06 01:40:08 +02:00
Stéphane Graber
3b01115569 Merge pull request #1611 from brauner/2017-06-02/enforce_config_item_method_implementation 
tests: enforce all methods for config items being implemented
 2017-06-05 19:30:00 -04:00
Christian Brauner
a394f952cd
conf: fix bionic builds 
bionic seems to lack a definition of __S_ISTYPE().

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-05 23:44:22 +02:00
Christian Brauner
6e50e70437
conf: improve lxc_map_ids() 
Closes https://github.com/lxc/lxd/issues/3384.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-05 23:44:11 +02:00
Christian Brauner
54117de569
conf: improve tty shifting function 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-05 19:17:11 +02:00
Christian Brauner
a5b18cb1b1
bdev: record output from mkfs.* 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-05 19:17:11 +02:00
Christian Brauner
493de765bb
bdev: non-functional changes 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-05 19:17:11 +02:00
Christian Brauner
b9986e437b
doc: tweak lxc.container.conf a little 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-05 19:17:10 +02:00
Christian Brauner
7e009d5207
bdev: "detect" loop file 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-04 18:02:50 +02:00
Christian Brauner
9aa76a172c
conf: remove dead mount code 
The removed codepath was non-functional for a long time now. All mounting is
handled through bdev.{c,h} and if that fails the other codepath would
necessarily fail as well. So let's remove them. This makes it way clearer what
is going on and simplifies things massively.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-04 13:25:23 +02:00
Christian Brauner
ae467c546b
af_unix: abstract lxc_abstract_unix_{send,recv}_fd 
- Enable lxc_abstract_unix_{send,recv}_fd() to send and receive multiple fds at
  once.
- lxc_abstract_unix_{send,recv}_fd() -> lxc_abstract_unix_{send,recv}_fds()
- Send tty fds from child to parent all at once.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-04 08:08:41 +02:00
Stéphane Graber
beda39ebbd Merge pull request #1612 from brauner/2017-06-03/bugfixes 
idmapping bugfixes
 2017-06-03 19:13:11 -04:00
Christian Brauner
c9b7c33ed0
tree-wide: log function called in userns_exec_1() 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-03 23:35:07 +02:00
Christian Brauner
1d90e06436
conf: avoid double-frees in userns_exec_1() 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-03 22:05:27 +02:00
Christian Brauner
b0ee598357
conf: non-functional changes 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-03 22:05:27 +02:00
Christian Brauner
f07fa8df6e
start: log sending and receiving of tty fds 
This is a potentially security sensitive operation and I really want to keep an
eye on *when exactly* this is send. So add more logging on the TRACE() level.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-03 22:05:04 +02:00
Stéphane Graber
ff3381e14a Merge pull request #1609 from brauner/2017-06-01/unit_test_idmap_parser 
unit test idmap parser + userns_exec_1() rework
 2017-06-02 20:43:38 -04:00
Christian Brauner
6002524466 Merge pull request #1608 from ss1h2a3tw/checkconfig 
add probe status checking
 2017-06-02 17:21:16 -06:00
Christian Brauner
28a2d9e76d
conf: rework userns_exec_1() 
This also fixes a bug where we caused a double mapping, when the {u,g}id for
the user was mapped to container root {g,u}id.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-03 00:41:59 +02:00
Christian Brauner
339efad99e
conf: non-functional changes 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-03 00:41:57 +02:00
Christian Brauner
77803ee7a6
tests: add unit tests for idmap parser 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-03 00:41:56 +02:00
Christian Brauner
0b843d358a
confile_utils: add new file 
This adds confile_utils.{c,h} which will contain a helpers to parse lxc
configuration files.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-03 00:41:54 +02:00
Shane Chen
59d7470770 add probe status checking 
Signed-off-by: Shane Chen <ss1ha3tw@gmail.com>
 2017-06-02 13:31:55 +08:00
Christian Brauner
c04f651ede
tests: enforce all methods for config items 
This adds a test that checks LXC's configuration jump table whether all methods
for a given configuration item are implemented. If it is not, we'll error out.
This should provide additional safety since a) the API can now be sure that
dereferencing the pointer for a given method in the config struct is safe and
b) when users implement new configuration keys and forget to implement a
required method we'll see it right away.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-02 02:48:20 +02:00
Christian Brauner
a3c8e60080
confile: add dummy getter for lxc.include 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-02 02:42:19 +02:00
Serge Hallyn
a9849a0685 Merge pull request #1592 from brauner/2017-05-28/idmap_handling 
idmap improvements
 2017-06-01 17:29:55 -05:00
Serge Hallyn
ca3592eb15 Merge pull request #1599 from brauner/2017-05-30/use_minimal_idmap_set 
conf: use minimal {g,u}id map
 2017-06-01 17:12:58 -05:00
Christian Brauner
f8aa4bf308
conf: use minimal {g,u}id map 
Afaict, userns_exec_1() is only used to operate based on privileges for the
user's own {g,u}id on the host and for the container root's unmapped {g,u}id.
This means we require only to establish a mapping from:
- the container root {g,u}id as seen from the host -> user's host {g,u}id
- the container root -> some sub{g,u}id

The former we add, if the user did not specifiy a mapping. The latter we
retrieve from the ontainer's configured {g,u}id mappings.

Closes #1598.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-01 23:54:47 +02:00
Serge Hallyn
493c623619 Merge pull request #1596 from brauner/2017-05-29/fix_parsing 
confile: fix parsing
 2017-06-01 16:17:11 -05:00
Christian Brauner
1573a51475 Merge pull request #1607 from ss1h2a3tw/master 
adding warning for mtu ignoring
 2017-06-01 20:25:09 +10:00
Shane Chen
72ccbbe1aa adding warning for mtu ignoring 
Signed-off-by: Shane Chen <ss1ha3tw@gmail.com>
 2017-06-01 14:22:39 +08:00
Christian Brauner
ae4ad10d18
tests: comp retval to exp val whenever we can 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-01 04:10:00 +02:00
Christian Brauner
a182feaebd
confile: performance tweaks 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-06-01 04:09:43 +02:00
Christian Brauner
03931c9e18 Merge pull request #1605 from decomposite/systemd_unit_stop 
Use lxc-stop to stop systemd service
 2017-06-01 08:40:40 +10:00
JD Friedrikson
c08d29b6d1
Use lxc-stop to stop systemd service 
Ever since 8eb62c2, systemd has not been able to cleanly stop lxc
containers (via lxc@) because it's still using SIGPWR for systemd-based
containers.

We should now use the nice logic in 330ae3d to stop the containers
instead.

Signed-off-by: JD Friedrikson <yours@decompo.site>
 2017-05-31 18:04:37 -04:00
Stéphane Graber
bf3e9c154e Merge pull request #1601 from brauner/2017-05-30/veth_fixes 
network: don't delete net devs we didn't create
 2017-05-31 13:17:36 -04:00
Christian Brauner
6afd673f2e
lxccontainer: switch api to new clearer callbacks 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:59:29 +02:00
Christian Brauner
973082f566
confile: add clearer for lxc.include 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:45:51 +02:00
Christian Brauner
fdf3c5896e
confile: add clearer for lxc.include 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:44:50 +02:00
Christian Brauner
715ccc969c
confile: add clearer for lxc.limit{.*} 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:44:50 +02:00
Christian Brauner
b98c5ab00d
confile: add clearer for lxc.no_new_privs 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:44:50 +02:00
Christian Brauner
59e370db1f
confile: add clearer for lxc.ephemeral 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:44:50 +02:00
Christian Brauner
1044b247c4
confile: add clearer for lxc.init_gid 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:44:49 +02:00
Christian Brauner
ec76dcfb4b
confile: add clearer for lxc.init_uid 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:44:49 +02:00
Christian Brauner
8e90af3ecb
confile: add clearer for lxc.init_cmd 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:44:49 +02:00
Christian Brauner
832fb63a0b
confile: add clearer for lxc.environment 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:44:49 +02:00
Christian Brauner
4850d2237e
confile: add clearer for lxc.group 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:25:23 +02:00
Christian Brauner
adad12caa7
confile: add clearer for lxc.monitor.unshare 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
 2017-05-31 18:22:27 +02:00