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Isolation: wired up per-application cgroup support internally.

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This commit hooks into the cgroup infrastructure added in the previous
commit to create per-application cgroups.

It does this by adding each "prototype process" into its own cgroup,
then each child process inherits its parents cgroup.

If we fail to create a cgroup we simply fail the process. This behaviour
may get enhanced in the future.

This won't actually do anything yet. Subsequent commits will hook this
up to the build and config systems.

Reviewed-by: Alejandro Colomar <alx@nginx.com>
Signed-off-by: Andrew Clayton <a.clayton@nginx.com>
This commit is contained in:
Andrew Clayton
2022-10-24 17:35:04 +01:00
parent 7d177faf3b
commit 867a839f10
4 changed files with 79 additions and 0 deletions
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13
src/nxt_process.h
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@@ -61,8 +61,11 @@ typedef enum {
typedef struct nxt_port_mmap_s nxt_port_mmap_t;
typedef struct nxt_process_s nxt_process_t;
typedef struct nxt_cgroup_s nxt_cgroup_t;
typedef void (*nxt_isolation_cleanup_t)(nxt_task_t *task,
nxt_process_t *process);
typedef void (*nxt_cgroup_cleanup_t)(nxt_task_t *task,
const nxt_process_t *process);
typedef struct {
@@ -80,6 +83,11 @@ typedef struct {
} nxt_process_automount_t;
struct nxt_cgroup_s {
char *path;
};
typedef struct {
u_char *rootfs;
nxt_process_automount_t automount;
@@ -87,6 +95,11 @@ typedef struct {
nxt_isolation_cleanup_t cleanup;
nxt_cgroup_cleanup_t cgroup_cleanup;
#if (NXT_HAVE_CGROUP)
nxt_cgroup_t cgroup;
#endif
#if (NXT_HAVE_CLONE)
nxt_clone_t clone;
#endif