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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-07-20 23:56:47 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-21 08:44:35 +0200 |
| commit | 488dee96bb62f0b3d9e678cf42574034d5b033a5 (patch) | |
| tree | 2969d47ffb0ffeaf15d20ffb0eda78a2bb694a40 /kernel/cgroup | |
| parent | net: Init backlog NAPI's gro_hash. (diff) | |
| download | linux-488dee96bb62f0b3d9e678cf42574034d5b033a5.tar.xz linux-488dee96bb62f0b3d9e678cf42574034d5b033a5.zip | |
kernfs: allow creating kernfs objects with arbitrary uid/gid
This change allows creating kernfs files and directories with arbitrary
uid/gid instead of always using GLOBAL_ROOT_UID/GID by extending
kernfs_create_dir_ns() and kernfs_create_file_ns() with uid/gid arguments.
The "simple" kernfs_create_file() and kernfs_create_dir() are left alone
and always create objects belonging to the global root.
When creating symlinks ownership (uid/gid) is taken from the target kernfs
object.
Co-Developed-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/cgroup')
| -rw-r--r-- | kernel/cgroup/cgroup.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 077370bf8964..35cf3d71f8aa 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -3557,7 +3557,9 @@ static int cgroup_add_file(struct cgroup_subsys_state *css, struct cgroup *cgrp, key = &cft->lockdep_key; #endif kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name), - cgroup_file_mode(cft), 0, cft->kf_ops, cft, + cgroup_file_mode(cft), + GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, + 0, cft->kf_ops, cft, NULL, key); if (IS_ERR(kn)) return PTR_ERR(kn); |