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core: Introduce unit private exec runtime

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Currently, exec runtimes can be shared between units (using
JoinsNamespaceOf=). Let's introduce a concept of a private exec
runtime that isn't shared with JoinsNamespaceOf=. The existing
ExecRuntime struct is renamed to ExecRuntimeShared and becomes a
private member of the new private ExecRuntime.
This commit is contained in:
Daan De Meyer
2023-03-27 14:46:57 +02:00
parent e52a696a9a
commit 28135da3cd
12 changed files with 123 additions and 56 deletions
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src/core/execute.h
+13 -2
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@@ -5,6 +5,7 @@ typedef struct ExecStatus ExecStatus;
typedef struct ExecCommand ExecCommand;
typedef struct ExecContext ExecContext;
typedef struct ExecSharedRuntime ExecSharedRuntime;
typedef struct ExecRuntime ExecRuntime;
typedef struct ExecParameters ExecParameters;
typedef struct Manager Manager;
@@ -124,6 +125,10 @@ struct ExecSharedRuntime {
int ipcns_storage_socket[2];
};
struct ExecRuntime {
ExecSharedRuntime *shared;
};
typedef enum ExecDirectoryType {
EXEC_DIRECTORY_RUNTIME = 0,
EXEC_DIRECTORY_STATE,
@@ -439,7 +444,7 @@ int exec_spawn(Unit *unit,
ExecCommand *command,
const ExecContext *context,
const ExecParameters *exec_params,
ExecSharedRuntime *runtime,
ExecRuntime *runtime,
DynamicCreds *dynamic_creds,
const CGroupContext *cgroup_context,
pid_t *ret);
@@ -486,12 +491,18 @@ void exec_status_reset(ExecStatus *s);
int exec_shared_runtime_acquire(Manager *m, const ExecContext *c, const char *name, bool create, ExecSharedRuntime **ret);
ExecSharedRuntime *exec_shared_runtime_destroy(ExecSharedRuntime *r);
ExecSharedRuntime *exec_shared_runtime_unref(ExecSharedRuntime *r);
DEFINE_TRIVIAL_CLEANUP_FUNC(ExecSharedRuntime*, exec_shared_runtime_unref);
int exec_shared_runtime_serialize(const Manager *m, FILE *f, FDSet *fds);
int exec_shared_runtime_deserialize_compat(Unit *u, const char *key, const char *value, FDSet *fds);
int exec_shared_runtime_deserialize_one(Manager *m, const char *value, FDSet *fds);
void exec_shared_runtime_vacuum(Manager *m);
int exec_runtime_make(ExecSharedRuntime *shared, ExecRuntime **ret);
ExecRuntime* exec_runtime_free(ExecRuntime *rt);
DEFINE_TRIVIAL_CLEANUP_FUNC(ExecRuntime*, exec_runtime_free);
ExecRuntime* exec_runtime_destroy(ExecRuntime *rt);
void exec_params_clear(ExecParameters *p);
bool exec_context_get_cpu_affinity_from_numa(const ExecContext *c);
@@ -533,5 +544,5 @@ ExecDirectoryType exec_directory_type_symlink_from_string(const char *s) _pure_;
const char* exec_resource_type_to_string(ExecDirectoryType i) _const_;
ExecDirectoryType exec_resource_type_from_string(const char *s) _pure_;
bool exec_needs_mount_namespace(const ExecContext *context, const ExecParameters *params, const ExecSharedRuntime *runtime);
bool exec_needs_mount_namespace(const ExecContext *context, const ExecParameters *params, const ExecRuntime *runtime);
bool exec_needs_network_namespace(const ExecContext *context);