shared: add exec-directory-util.ch

src/core/execute.c

@@ -3000,17 +3000,6 @@ static const char* const exec_preserve_mode_table[_EXEC_PRESERVE_MODE_MAX] = {
 
 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(exec_preserve_mode, ExecPreserveMode, EXEC_PRESERVE_YES);
 
-/* This table maps ExecDirectoryType to the setting it is configured with in the unit */
-static const char* const exec_directory_type_table[_EXEC_DIRECTORY_TYPE_MAX] = {
-        [EXEC_DIRECTORY_RUNTIME]       = "RuntimeDirectory",
-        [EXEC_DIRECTORY_STATE]         = "StateDirectory",
-        [EXEC_DIRECTORY_CACHE]         = "CacheDirectory",
-        [EXEC_DIRECTORY_LOGS]          = "LogsDirectory",
-        [EXEC_DIRECTORY_CONFIGURATION] = "ConfigurationDirectory",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(exec_directory_type, ExecDirectoryType);
-
 /* This table maps ExecDirectoryType to the symlink setting it is configured with in the unit */
 static const char* const exec_directory_type_symlink_table[_EXEC_DIRECTORY_TYPE_MAX] = {
         [EXEC_DIRECTORY_RUNTIME]       = "RuntimeDirectorySymlink",

src/core/execute.h

@@ -7,6 +7,7 @@
 #include "cgroup-util.h"
 #include "core-forward.h"
 #include "cpu-set-util.h"
+#include "exec-directory-util.h"
 #include "exec-util.h"
 #include "list.h"
 #include "log-context.h"
@@ -126,22 +127,19 @@ typedef struct ExecRuntime {
         int ephemeral_storage_socket[2];
 } ExecRuntime;
 
-typedef enum ExecDirectoryType {
-        EXEC_DIRECTORY_RUNTIME,
-        EXEC_DIRECTORY_STATE,
-        EXEC_DIRECTORY_CACHE,
-        EXEC_DIRECTORY_LOGS,
-        EXEC_DIRECTORY_CONFIGURATION,
-        _EXEC_DIRECTORY_TYPE_MAX,
-        _EXEC_DIRECTORY_TYPE_INVALID = -EINVAL,
-} ExecDirectoryType;
-
 static inline bool EXEC_DIRECTORY_TYPE_SHALL_CHOWN(ExecDirectoryType t) {
         /* Returns true for the ExecDirectoryTypes that we shall chown()ing for the user to. We do this for
          * all of them, except for configuration */
         return t >= 0 && t < _EXEC_DIRECTORY_TYPE_MAX && t != EXEC_DIRECTORY_CONFIGURATION;
 }
 
+typedef struct QuotaLimit {
+        uint64_t quota_absolute; /* absolute quota in bytes; if UINT64_MAX relative quota configured, see below */
+        uint32_t quota_scale;    /* relative quota to backend size, scaled to 0…UINT32_MAX */
+        bool quota_enforce;
+        bool quota_accounting;
+} QuotaLimit;
+
 typedef struct ExecDirectoryItem {
         char *path;
         char **symlinks;
@@ -153,6 +151,7 @@ typedef struct ExecDirectory {
         mode_t mode;
         size_t n_items;
         ExecDirectoryItem *items;
+        QuotaLimit exec_quota;
 } ExecDirectory;
 
 typedef enum ExecCleanMask {
@@ -581,9 +580,6 @@ ExecPreserveMode exec_preserve_mode_from_string(const char *s) _pure_;
 const char* exec_keyring_mode_to_string(ExecKeyringMode i) _const_;
 ExecKeyringMode exec_keyring_mode_from_string(const char *s) _pure_;
 
-const char* exec_directory_type_to_string(ExecDirectoryType i) _const_;
-ExecDirectoryType exec_directory_type_from_string(const char *s) _pure_;
-
 const char* exec_directory_type_symlink_to_string(ExecDirectoryType i) _const_;
 ExecDirectoryType exec_directory_type_symlink_from_string(const char *s) _pure_;
 

src/shared/exec-directory-util.c

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "exec-directory-util.h"
+#include "string-table.h"
+
+/* This table maps ExecDirectoryType to the setting it is configured with in the unit */
+static const char* const exec_directory_type_table[_EXEC_DIRECTORY_TYPE_MAX] = {
+        [EXEC_DIRECTORY_RUNTIME]       = "RuntimeDirectory",
+        [EXEC_DIRECTORY_STATE]         = "StateDirectory",
+        [EXEC_DIRECTORY_CACHE]         = "CacheDirectory",
+        [EXEC_DIRECTORY_LOGS]          = "LogsDirectory",
+        [EXEC_DIRECTORY_CONFIGURATION] = "ConfigurationDirectory",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(exec_directory_type, ExecDirectoryType);

src/shared/exec-directory-util.h

@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <errno.h>
+
+#include "macro-fundamental.h"
+
+typedef enum ExecDirectoryType {
+        EXEC_DIRECTORY_RUNTIME,
+        EXEC_DIRECTORY_STATE,
+        EXEC_DIRECTORY_CACHE,
+        EXEC_DIRECTORY_LOGS,
+        EXEC_DIRECTORY_CONFIGURATION,
+        _EXEC_DIRECTORY_TYPE_MAX,
+        _EXEC_DIRECTORY_TYPE_INVALID = -EINVAL,
+} ExecDirectoryType;
+
+const char* exec_directory_type_to_string(ExecDirectoryType i) _const_;
+ExecDirectoryType exec_directory_type_from_string(const char *s) _pure_;

src/shared/meson.build

@@ -69,6 +69,7 @@ shared_sources = files(
         'elf-util.c',
         'enable-mempool.c',
         'ethtool-util.c',
+        'exec-directory-util.c',
         'exec-util.c',
         'exit-status.c',
         'extension-util.c',