mirror of
https://github.com/troglobit/finit.git
synced 2026-10-14 10:19:36 +00:00
Joachim Wiberg
a42a789d29
The main purpose of this patch is to remove top-level cgroups when they are remvoed from finit.conf. However, this is tricky, becasue there may still be supervised services (and children of them) running. We must postpone removal until a cgroup.events change. To make matters worse, events may arrive out-of-order, i.e. the last-child event for the parent cgroup before the sub-group. A spin-off from this patch is that we can now support arbitrarily long group names and group config. (Only applies to top-level cgroups, not run/task/services.) Limitations: - Processes in "removed" cgroups are not migrated/orphaned, the reasons are several: overhead and complexity and the fact that memory cannot be migrated - A lingering child of a moved service may prevent an old top-level cgroup from being removed. Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
/* Finit control group support functions
|
|
*
|
|
* Copyright (c) 2019-2021 Joachim Wiberg <troglobit@gmail.com>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef FINIT_CGROUP_H_
|
|
#define FINIT_CGROUP_H_
|
|
|
|
#include <uev/uev.h>
|
|
|
|
struct cgroup {
|
|
char name[16];
|
|
char cfg[128];
|
|
};
|
|
|
|
void cgroup_mark_all(void);
|
|
void cgroup_cleanup (void);
|
|
|
|
int cgroup_add (char *name, char *cfg, int protected);
|
|
int cgroup_del (char *dir);
|
|
void cgroup_config (void);
|
|
|
|
void cgroup_init (uev_ctx_t *ctx);
|
|
|
|
int cgroup_user (char *name, int pid);
|
|
int cgroup_service (char *name, int pid, struct cgroup *cg);
|
|
|
|
#endif /* FINIT_CGROUP_H_ */
|