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Christian Brauner [Thu, 11 Feb 2021 09:45:14 +0000 (10:45 +0100)]

rexec: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:44:38 +0000 (10:44 +0100)]

network: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:42:22 +0000 (10:42 +0100)]

mount_utils: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:41:52 +0000 (10:41 +0100)]

monitor: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:40:56 +0000 (10:40 +0100)]

lxclock: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:40:00 +0000 (10:40 +0100)]

lxccontainer: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:32:22 +0000 (10:32 +0100)]

log: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:30:38 +0000 (10:30 +0100)]

file_utils: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:29:59 +0000 (10:29 +0100)]

criu: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:28:07 +0000 (10:28 +0100)]

confile_utils: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:27:06 +0000 (10:27 +0100)]

confile: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:24:18 +0000 (10:24 +0100)]

conf: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:18:41 +0000 (10:18 +0100)]

commands_utils: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:16:34 +0000 (10:16 +0100)]

attach: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:15:15 +0000 (10:15 +0100)]

cgroups: convert to strnprintf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 11 Feb 2021 09:14:34 +0000 (10:14 +0100)]

string_utils: add wrapper for snprintf()

This let's us avoid the tedious

if (ret < 0 || (size_t)ret >= sizeof(buf))

style of error checking.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Stéphane Graber [Wed, 10 Feb 2021 20:52:59 +0000 (15:52 -0500)]

Merge pull request #3664 from brauner/2021-02-10/fixes

cgroups: fixes

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Christian Brauner [Wed, 10 Feb 2021 19:18:37 +0000 (20:18 +0100)]

cgroups: log container process entering

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 19:17:32 +0000 (20:17 +0100)]

cgroups: log monitor and transient process entering

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 19:15:48 +0000 (20:15 +0100)]

cgroups: do not return early when entering monitor cgroups

This will happen when restoring a container via criu.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 19:14:38 +0000 (20:14 +0100)]

cgroups: use brackets to have clear semantics for flags checking

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Stéphane Graber [Wed, 10 Feb 2021 18:41:07 +0000 (13:41 -0500)]

Merge pull request #3663 from brauner/2021-02-10/fixes

criu: fixes

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Christian Brauner [Wed, 10 Feb 2021 12:21:25 +0000 (13:21 +0100)]

criu: handle new cgroup layout

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 12:12:47 +0000 (13:12 +0100)]

criu: lxc_init() already initializes cgroups

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 12:03:06 +0000 (13:03 +0100)]

criu: warn about cgroup hierarchies without controllers

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 11:50:20 +0000 (12:50 +0100)]

criu: rework init pid retrieval

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 11:46:08 +0000 (12:46 +0100)]

criu: use cleanup macro when parsing mount data

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 11:45:22 +0000 (12:45 +0100)]

criu: use cleanup macro

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 11:39:23 +0000 (12:39 +0100)]

criu: move logging under lxc_log_trace()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 11:27:26 +0000 (12:27 +0100)]

criu: massage exec_criu()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 10:11:45 +0000 (11:11 +0100)]

criu: mark cgroups methods specific to criu

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Wed, 10 Feb 2021 09:58:16 +0000 (10:58 +0100)]

conf: fix memory leak

Fixes: Coverity 1472848
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Stéphane Graber [Tue, 9 Feb 2021 15:46:19 +0000 (10:46 -0500)]

Merge pull request #3661 from blenk92/iw_error_msg

network: Add error message if iw couldn't be found

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Stéphane Graber [Tue, 9 Feb 2021 15:07:28 +0000 (10:07 -0500)]

Merge pull request #3662 from brauner/2021-02-08/fixes

conf: expand fd-only setup codepaths

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Christian Brauner [Mon, 8 Feb 2021 19:32:56 +0000 (20:32 +0100)]

conf: kill PATH_MAX bytes

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Mon, 8 Feb 2021 19:30:59 +0000 (20:30 +0100)]

conf: kill PATH_MAX bytes

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Mon, 8 Feb 2021 19:24:01 +0000 (20:24 +0100)]

tests: add logging to lxc-test-unpriv

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Mon, 8 Feb 2021 13:52:50 +0000 (14:52 +0100)]

conf: fd-only tty setup

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Mon, 8 Feb 2021 13:46:08 +0000 (14:46 +0100)]

mount_utils: s/OPEN_TREE_CLONE | OPEN_TREE_CLONE/OPEN_TREE_CLONE | OPEN_TREE_CLOEXEC/g

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Mon, 8 Feb 2021 10:24:57 +0000 (11:24 +0100)]

conf: rework rootfs pinning

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

network: Add error message if iw couldn't be found

When iw is not installed on the host, lxc fails to move wireless devices
into a container. Unfortunately there is no real error message yet
(other than that it didn't work), so its quite unobvious what causes
this. This commit adds a error message that clearly states the
application iw is missing.

Signed-off-by: Maximilian Blenk <blenkmax@gmail.com>

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Christian Brauner [Mon, 8 Feb 2021 09:22:00 +0000 (10:22 +0100)]

conf: kill PAT_MAX bytes

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Mon, 8 Feb 2021 09:21:18 +0000 (10:21 +0100)]

conf: kill PATH_MAX bytes

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Mon, 8 Feb 2021 09:17:05 +0000 (10:17 +0100)]

conf: don't pass struct lxc_conf

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Mon, 8 Feb 2021 09:16:18 +0000 (10:16 +0100)]

conf: kill PATH_MAX bytes

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Mon, 8 Feb 2021 08:54:57 +0000 (09:54 +0100)]

conf: s/setup_mount()/setup_mount_fstab()/g

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Sun, 7 Feb 2021 15:19:36 +0000 (16:19 +0100)]

mount_utils: add locked flag helpers

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Stéphane Graber [Fri, 5 Feb 2021 22:01:39 +0000 (17:01 -0500)]

Merge pull request #3660 from brauner/2021-02-05/fixes_1

mount_utils: initialize fd

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Christian Brauner [Fri, 5 Feb 2021 20:49:51 +0000 (21:49 +0100)]

mount_utils: kill mount_filesystem()

We have way better helpers now.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 20:47:56 +0000 (21:47 +0100)]

attach: switch to simple mount()

At the point where we're remounging proc and sys we're in the container's
namespaces so there's no chance of escape so a simple mount() syscall will
suffice.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 20:21:01 +0000 (21:21 +0100)]

mount_utils: initialize fd

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Stéphane Graber [Fri, 5 Feb 2021 18:40:19 +0000 (13:40 -0500)]

Merge pull request #3659 from brauner/2021-02-05/fixes

mount: extend support for the new mount api

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 17:46:47 +0000 (18:46 +0100)]

tree-wide: make use of new_mount_api() where it makes sense

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 17:42:10 +0000 (18:42 +0100)]

mount_utils: detect new mount api support

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 16:54:19 +0000 (17:54 +0100)]

mount_utils: kill mount_from_at()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 16:53:41 +0000 (17:53 +0100)]

conf: use fd_bind_mount() in lxc_fill_autodev()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 16:38:05 +0000 (17:38 +0100)]

mount_utils: add support for bind-mounts through the new mount api

fd_bind_mount()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 16:34:57 +0000 (17:34 +0100)]

mount_utils: kill mount_at()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 16:20:27 +0000 (17:20 +0100)]

cgroups: switch __cg_mount_direct() to use the new mount api

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 15:37:17 +0000 (16:37 +0100)]

cgroups: switch tmpfs mounting to new mount api

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 15:36:59 +0000 (16:36 +0100)]

conf: switch mount_autodev() to new mount api

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 15:35:36 +0000 (16:35 +0100)]

mount_utils: add extended helpers for new mount api

fs_prepare()
fs_set_property()
fs_attach()
fs_mount()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 11:34:07 +0000 (12:34 +0100)]

mount_utils: move mount_at() and mount_from_at() over from utils.{c,h}

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 11:30:17 +0000 (12:30 +0100)]

Merge pull request #3657 from brauner/2021-02-05/init_groups

conf: implement lxc.init.groups

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 10:59:14 +0000 (11:59 +0100)]

confile: make garbage groups an error

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 10:28:08 +0000 (11:28 +0100)]

tests: improve lxc.init.groups tests

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 10:06:24 +0000 (11:06 +0100)]

confile: handle appending init groups

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 10:05:58 +0000 (11:05 +0100)]

conf: use lxc_groups_t directly

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 10:05:15 +0000 (11:05 +0100)]

attach_options: use size_t for lxc_groups_t

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 09:40:56 +0000 (10:40 +0100)]

attach: use brackets around flag check

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 09:38:27 +0000 (10:38 +0100)]

attach_options: use standard C pointer syntax

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Fri, 5 Feb 2021 09:37:09 +0000 (10:37 +0100)]

attach_options: initialize .groups

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Ruben Jenster [Wed, 3 Feb 2021 23:37:44 +0000 (00:37 +0100)]

attach: Add groups option to keep additional group IDs.

Signed-off-by: Ruben Jenster <r.jenster@drachenfels.de>

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Ruben Jenster [Fri, 30 Oct 2020 09:00:07 +0000 (10:00 +0100)]

confile: add lxc.init.groups to keep additional groups

Signed-off-by: Ruben Jenster <r.jenster@drachenfels.de>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 11:07:44 +0000 (12:07 +0100)]

utils: rework lxc_setgroups()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 08:56:59 +0000 (09:56 +0100)]

tree-wide: use lxc_drop_groups() instead of lxc_setgroups(0, NULL)

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Fri, 5 Feb 2021 08:55:16 +0000 (09:55 +0100)]

utils: add lxc_drop_groups()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Stéphane Graber [Thu, 4 Feb 2021 22:44:48 +0000 (17:44 -0500)]

Merge pull request #3655 from brauner/2021-02-04/fixes_1

Tiny fixes in attach and utils

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 21:48:18 +0000 (22:48 +0100)]

utils: check for snprintf() error

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 21:42:58 +0000 (22:42 +0100)]

attach: improve logging and terminology

The term "intermediate process" is not very nice imho, "transient process" fits
better.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Stéphane Graber [Thu, 4 Feb 2021 20:40:31 +0000 (15:40 -0500)]

Merge pull request #3651 from brauner/2021-02-04/fixes

cgroups: fix cgroup mounting

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Christian Brauner [Thu, 4 Feb 2021 19:27:40 +0000 (20:27 +0100)]

cgroups: check for correct error in __cg_unified_attach() from cgroup_attach()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 4 Feb 2021 18:06:38 +0000 (19:06 +0100)]

tree-wide: s/dfd_root_host/dfd_host/g

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 4 Feb 2021 18:05:55 +0000 (19:05 +0100)]

tree-wide: s/mntpt_fd/dfd_mnt/g

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 4 Feb 2021 18:05:05 +0000 (19:05 +0100)]

tree-wide: s/dev_mntpt_fd/dfd_dev/g

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 15:06:43 +0000 (16:06 +0100)]

syscall_wrappers: fix PROTECT_OPEN_W macro

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 14:57:13 +0000 (15:57 +0100)]

conf: restricted fd-only lxc_fill_autodev()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 14:56:37 +0000 (15:56 +0100)]

conf: start stashing dfd to host's / during container setup

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 14:52:54 +0000 (15:52 +0100)]

conf: fix lxc_setup_dev_console()

We were printing garbage on accident.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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Christian Brauner [Thu, 4 Feb 2021 14:23:55 +0000 (15:23 +0100)]

utils: add mount_from_at()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 14:05:43 +0000 (15:05 +0100)]

cgroups: restrict open calls in cgroup_attach_create_leaf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 14:02:14 +0000 (15:02 +0100)]

cgroups: improve error handling and logging in cgroup_attach_leaf()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 14:01:45 +0000 (15:01 +0100)]

cgroups: fix argument vetting in cgroup_attach()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 14:01:09 +0000 (15:01 +0100)]

attach: fix fallback logic when attaching to cgroups

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 13:00:18 +0000 (14:00 +0100)]

cgroups: switch to fd-based cgroup mounting

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 11:50:43 +0000 (12:50 +0100)]

cgroups: restricted fd-only controller mountpoint creation

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Thu, 4 Feb 2021 10:22:26 +0000 (11:22 +0100)]

cgroups: fix cgroup mounting

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Stéphane Graber [Wed, 3 Feb 2021 22:05:35 +0000 (17:05 -0500)]

Merge pull request #3650 from brauner/2021-02-03/fixes_1

conf: harden various mount paths

commit | commitdiff | tree

Christian Brauner [Wed, 3 Feb 2021 20:57:44 +0000 (21:57 +0100)]

utils: harden __safe_mount_beneath_at()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

commit | commitdiff | tree

Christian Brauner [Wed, 3 Feb 2021 20:31:03 +0000 (21:31 +0100)]

conf: refactor transient procfs mounting

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>