Skip to content

L
lxc
Switch branch/tag
  1. 28 Jan, 2016 22 commits
  3. 20 Jan, 2016 6 commits
  5. 19 Jan, 2016 1 commit
  7. 14 Jan, 2016 2 commits
  9. 13 Jan, 2016 6 commits
    • cgmanager: drop possibly expected failures to a WARN · bdaa0884
      Serge Hallyn authored 
      Otherwise every lxc-info by a user who doesn't own all his cgroups
will result in a set of error messages which are really innocuous.
Signed-off-by: 's avatarSerge Hallyn <serge.hallyn@ubuntu.com>
    • cgmanager: drop the cgm_supports_multiple_controllers bool · 3e376eee
      Serge Hallyn authored 
      What we want is to make sure we dont' use controller 'all' if cgmanager
doesn't support, if all our cgroups aren't the same, or if we cannot
controll all our cgroups.  We were mixing some of these conditions.  Use
cgm_all_controllers_same for all.  (Might want to rename it, but we want
to stick with just one).
Signed-off-by: 's avatarSerge Hallyn <serge.hallyn@ubuntu.com>
    • Merge pull request #748 from brauner/2015-01-01/lxc_ls · a5711932
      Serge Hallyn authored 
      Reimplement lxc-ls in C
    • cgmanager - fix (again) previous commit · 5f4aafac
      Serge Hallyn authored 
      Bad late-night commit.  We were doing a while loop for a reason.  Just
initialize i to 0 before the while loop.
Signed-off-by: 's avatarSerge Hallyn <serge.hallyn@ubuntu.com>
    • reimplement lxc-ls in C · 15fd209a
      Christian Brauner authored 
      This is a reimplementation of lxc-ls in C. It supports all features previously
supported by lxc-ls.

- All flags and parameters have the same name as before except when the user
  specifies a regex to filter container names by. In the previous Python
  implementation the regex was passed without paramter flag. The new
  C-implementation has the parameter flag -r/--regex for this.

- Since we fork in lxc_attach() we need some form of IPC. Opening shared memory
  in the parent (mmap()) seems to be impractical since we don't know the size
  of the mapping beforehand. The other option is to open shared memory in the
  child and then to attach the parent to it but then we would need to resort to
  shm_open() or shmget(). Instead we go for a socketpair() here and wait for
  the child.
- Note that we call lxc_attach() and pass ls_get() as exec function to it (To
  be even more specific: We do not pass ls_get() directly but rather a wrapper
  function for ls_get() which receives a few arguments to enable the
  communication between child and parent.). This implementation has the
  advantage that we do not depend on any lxc executables being present in the
  container. The gist in code:

	ls_get()
	{
		/* Gather all relevant information */

		/* get nested containers */
		if (args->ls_nested && running) {
			/* set up some more stuff */

			/*
			 * execute ls_get() in namespace of the container to
 			 * get nested containers
			 */
  			c->attach(c, ls_get_wrapper, &wrapargs, &aopt, &out)

			/* do some cleaning up */
		}
	}

- When the user requests listing of nested containers without fancy-format
  enabled we want him to easily recognize which container is nested in which.
  So in this case we do not simply record the name but rather the name
  prepended with all the parents of the container:

	grand-grand-parent/grand-parent/parent/child

- Pretty-printing nested containers: Any call to list_*_containers() will
  return a sorted array of container names.  Furthermore, the recursive
  implementation of lxc_ls() will automatically put the containers in the
  correct order regarding their nesting. That is if we have the following
  nesting:

	A
	A --> S
	A --> T --> O
	A --> T --> O --> L
	A --> T --> O --> M
	A --> U
	A --> U --> P
	A --> U --> Q
	B

  The array ls_get() will set up looks like this:
	A S T O L M U P Q B

  Hence, we only need to keep an additional variable nestlvl to indicate the
  nesting level a container is at and use that to compute (a) the maximum field
  width we need to print out the container names and (b) to correctly indent
  each container according to its nesting level when printing it.

- add comments to make the ls_get() function more accessible
Signed-off-by: 's avatarChristian Brauner <christian.brauner@mailbox.org>
    • cgmanager: fix abuse of 'i' · 449710f8
      Serge Hallyn authored 
      we were initializing i to 0, then doing a while i <, but then a
separate commit (by myself) used i as a generic variable in between
those two.
Signed-off-by: 's avatarSerge Hallyn <serge.hallyn@ubuntu.com>
  11. 12 Jan, 2016 3 commits
    • Merge pull request #742 from brauner/2015-12-12/split_bdev_into_modules · 3b117b85
      Serge Hallyn authored 
      Split bdev into modules
    • Cleanup bdev.c after splitting into modules · cdb4e53a
      Christian Brauner authored 
      The function

	- bdev_get();

becomes static. It is called from nowhere else so far and never appeared in any
header.

Minor changes

	- Avoid comparisons between int and size_t types. Use size_t where
	  possible else cast to size_t when it makes sense.
	- insert missing spaces between operators
	- put declarations for all static functions at the top
Signed-off-by: 's avatarChristian Brauner <christian.brauner@mailbox.org>
    • Split bdev into modules: lxcnbd · bf76c012
      Christian Brauner authored 
      The functions

	- clone_attach_nbd();
	- do_attach_nbd();
	- nbd_busy();
	- nbd_detach();
	- nbd_get_partition();
	- wait_for_partition();

move from bdev.c to lxcnbd.c. They remain static

The functions

	- attach_nbd();
	- detach_nbd_idx();
	- nbd_clonepaths();
	- nbd_create();
	- nbd_destroy();
	- nbd_detect();
	- nbd_mount();
	- nbd_umount();
	- requires_nbd();

move from bdev.c to lxcnbd.{c,h}. They all become extern.

The struct

	- struct nbd_attach_data

moves from bdev.c to lxcnbd.c.

Adapt Makefile.am to include lxcnbd.{c,h}.

The structs

       - struct bdev; /* defined in bdev.h */
       - struct bdev_specs; /* defined in lxccontainer.h */
       - struct lxc_conf; /* defined conf.h */

are forward declared/put as incomplete types into lxcnbd.h as the functions
associated with nbd need access to it.
Signed-off-by: 's avatarChristian Brauner <christian.brauner@mailbox.org>