On 07/31/2014 10:12 AM, Ivana Hutarova Varekova wrote:
> cgroup_add_all_controllers function attach all mounted controllers to a given
> cgroup. This function just modifies internal libcgroup structure, not the
> kernel control group.
> input parameter: cgroup
> output parameter: zero or error number
>
>
> Signed-off-by: Ivana Hutarova Varekova <varek...@redhat.com>
Reviewed-by: Jan Chaloupka<jchal...@redhat.com>
> ---
> include/libcgroup/groups.h | 10 +++++++++
> src/libcgroup.map | 7 ++++++
> src/wrapper.c | 50
> ++++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 67 insertions(+)
>
> diff --git a/include/libcgroup/groups.h b/include/libcgroup/groups.h
> index d5c87aa..201558f 100644
> --- a/include/libcgroup/groups.h
> +++ b/include/libcgroup/groups.h
> @@ -150,6 +150,16 @@ struct cgroup_controller *cgroup_add_controller(struct
> cgroup *cgroup,
> const char *name);
>
> /**
> + * Attach all mounted controllers to given cgroup. This function just
> modifies
> + * internal libcgroup structure, not the kernel control group.
> + *
> + * @param cgroup
> + * @return zero or error number
> + */
> +int cgroup_add_all_controllers(struct cgroup *cgroup);
> +
> +
> +/**
> * Return appropriate controller from given group.
> * The controller must be added before using cgroup_add_controller() or
> loaded
> * from kernel using cgroup_get_cgroup().
> diff --git a/src/libcgroup.map b/src/libcgroup.map
> index f8b0fb9..8fe1990 100644
> --- a/src/libcgroup.map
> +++ b/src/libcgroup.map
> @@ -122,3 +122,10 @@ CGROUP_0.40 {
> cgroup_templates_cache_set_source_files;
> cgroup_load_templates_cache_from_files;
> } CGROUP_0.39;
> +
> +CGROUP_0.41 {
> +} CGROUP_0.40;
> +
> +CGROUP_0.42 {
> + cgroup_add_all_controllers;
> +} CGROUP_0.41;
> diff --git a/src/wrapper.c b/src/wrapper.c
> index c03472a..3a9331f 100644
> --- a/src/wrapper.c
> +++ b/src/wrapper.c
> @@ -92,6 +92,56 @@ struct cgroup_controller *cgroup_add_controller(struct
> cgroup *cgroup,
> return controller;
> }
>
> +int cgroup_add_all_controllers(struct cgroup *cgroup)
> +{
> + int ret;
> + void *handle;
> + struct controller_data info;
> + struct cgroup_controller *cgc;
> +
> + /* go through the controller list */
> + ret = cgroup_get_all_controller_begin(&handle, &info);
> + if ((ret != 0) && (ret != ECGEOF)) {
> + fprintf(stderr, "cannot read controller data: %s\n",
> + cgroup_strerror(ret));
> + return ret;
> + }
> +
> + while (ret == 0) {
> + if (info.hierarchy == 0) {
> + /* the controller is not attached to any hierarchy
> + skip it */
> + goto next;
> + }
> +
> + /* add mounted controller to cgroup structure */
> + cgc = cgroup_add_controller(cgroup, info.name);
> + if (!cgc) {
> + ret = ECGINVAL;
> + fprintf(stderr, "controller %s can't be add\n",
> + info.name);
> + }
> +
> +next:
> + ret = cgroup_get_all_controller_next(&handle, &info);
> + if (ret && ret != ECGEOF)
> + goto end;
> + }
> +
> +end:
> + cgroup_get_all_controller_end(&handle);
> +
> + if (ret == ECGEOF)
> + ret = 0;
> +
> + if (ret)
> + fprintf(stderr,
> + "cgroup_get_controller_begin/next failed (%s)\n",
> + cgroup_strerror(ret));
> +
> + return ret;
> +}
> +
> void cgroup_free_controllers(struct cgroup *cgroup)
> {
> int i, j;
>
>
> ------------------------------------------------------------------------------
> Infragistics Professional
> Build stunning WinForms apps today!
> Reboot your WinForms applications with our WinForms controls.
> Build a bridge from your legacy apps to the future.
> http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk
> _______________________________________________
> Libcg-devel mailing list
> Libcg-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/libcg-devel
--
Jan Chaloupka
------------------------------
* Software Engineer *
* ENG Base Operating Systems *
* Red Hat Czech, s. r. o. *
* UTC+1 (CET), jchaloup *
------------------------------------------------------------------------------
Infragistics Professional
Build stunning WinForms apps today!
Reboot your WinForms applications with our WinForms controls.
Build a bridge from your legacy apps to the future.
http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk
_______________________________________________
Libcg-devel mailing list
Libcg-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/libcg-devel
