Prep v228: Substitute declaration masks (1/4)

[elogind.git] / src / basic / cgroup-util.c

diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
index 1e54f58f57d0454e43f2f9592084c3b9f0f79000..b5de1cc143f55f9ec8c8ed719d22a873fb9eef75 100644 (file)
--- a/src/basic/cgroup-util.c
+++ b/src/basic/cgroup-util.c
@@ -19,28 +19,39 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <dirent.h>
 #include <errno.h>
-#include <unistd.h>
+#include <ftw.h>
 #include <signal.h>
-#include <string.h>
 #include <stdlib.h>
-#include <dirent.h>
+#include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <ftw.h>
+#include <unistd.h>
 
-#include "set.h"
-#include "macro.h"
-#include "util.h"
-#include "formats-util.h"
-#include "process-util.h"
-#include "path-util.h"
-// #include "unit-name.h"
+#include "alloc-util.h"
+#include "cgroup-util.h"
+#include "dirent-util.h"
+#include "extract-word.h"
+#include "fd-util.h"
 #include "fileio.h"
-// #include "special.h"
-#include "mkdir.h"
+#include "formats-util.h"
+#include "fs-util.h"
 #include "login-util.h"
-#include "cgroup-util.h"
+#include "macro.h"
+#include "mkdir.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "proc-cmdline.h"
+#include "process-util.h"
+#include "set.h"
+//#include "special.h"
+#include "stat-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "unit-name.h"
+#include "user-util.h"
+#include "util.h"
 
 int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) {
         _cleanup_free_ char *fs = NULL;
@@ -574,7 +585,7 @@ static int controller_is_accessible(const char *controller) {
                 /* We don't support named hierarchies if we are using
                  * the unified hierarchy. */
 
-                if (streq(controller, ELOGIND_CGROUP_CONTROLLER))
+                if (streq(controller, SYSTEMD_CGROUP_CONTROLLER))
                         return 0;
 
                 if (startswith(controller, "name="))
@@ -707,7 +718,7 @@ int cg_attach(const char *controller, const char *path, pid_t pid) {
 
         snprintf(c, sizeof(c), PID_FMT"\n", pid);
 
-        return write_string_file_no_create(fs, c);
+        return write_string_file(fs, c, 0);
 }
 
 int cg_attach_fallback(const char *controller, const char *path, pid_t pid) {
@@ -820,7 +831,7 @@ int cg_pid_get_path(const char *controller, pid_t pid, char **path) {
                         if (!cg_controller_is_valid(controller))
                                 return -EINVAL;
                 } else
-                        controller = ELOGIND_CGROUP_CONTROLLER;
+                        controller = SYSTEMD_CGROUP_CONTROLLER;
 
                 cs = strlen(controller);
         }
@@ -907,7 +918,7 @@ int cg_install_release_agent(const char *controller, const char *agent) {
 
         sc = strstrip(contents);
         if (isempty(sc)) {
-                r = write_string_file_no_create(fs, agent);
+                r = write_string_file(fs, agent, 0);
                 if (r < 0)
                         return r;
         } else if (!path_equal(sc, agent))
@@ -925,7 +936,7 @@ int cg_install_release_agent(const char *controller, const char *agent) {
 
         sc = strstrip(contents);
         if (streq(sc, "0")) {
-                r = write_string_file_no_create(fs, "1");
+                r = write_string_file(fs, "1", 0);
                 if (r < 0)
                         return r;
 
@@ -952,7 +963,7 @@ int cg_uninstall_release_agent(const char *controller) {
         if (r < 0)
                 return r;
 
-        r = write_string_file_no_create(fs, "0");
+        r = write_string_file(fs, "0", 0);
         if (r < 0)
                 return r;
 
@@ -962,7 +973,7 @@ int cg_uninstall_release_agent(const char *controller) {
         if (r < 0)
                 return r;
 
-        r = write_string_file_no_create(fs, "");
+        r = write_string_file(fs, "", 0);
         if (r < 0)
                 return r;
 
@@ -1159,7 +1170,7 @@ int cg_mangle_path(const char *path, char **result) {
         if (r < 0)
                 return r;
 
-        return cg_get_path(c ? c : ELOGIND_CGROUP_CONTROLLER, p ? p : "/", NULL, result);
+        return cg_get_path(c ?: SYSTEMD_CGROUP_CONTROLLER, p ?: "/", NULL, result);
 }
 
 int cg_get_root_path(char **path) {
@@ -1170,7 +1181,7 @@ int cg_get_root_path(char **path) {
 
         assert(path);
 
-        r = cg_pid_get_path(ELOGIND_CGROUP_CONTROLLER, 1, &p);
+        r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 1, &p);
         if (r < 0)
                 return r;
 
@@ -1186,7 +1197,7 @@ int cg_get_root_path(char **path) {
         return 0;
 #else
         assert(path);
-        return cg_pid_get_path(ELOGIND_CGROUP_CONTROLLER, 1, path);
+        return cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 1, path);
 #endif // 0
 }
 
@@ -1227,7 +1238,7 @@ int cg_pid_get_path_shifted(pid_t pid, const char *root, char **cgroup) {
         assert(pid >= 0);
         assert(cgroup);
 
-        r = cg_pid_get_path(ELOGIND_CGROUP_CONTROLLER, pid, &raw);
+        r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &raw);
         if (r < 0)
                 return r;
 
@@ -1860,7 +1871,7 @@ int cg_set_attribute(const char *controller, const char *path, const char *attri
         if (r < 0)
                 return r;
 
-        return write_string_file_no_create(p, value);
+        return write_string_file(p, value, 0);
 }
 
 /// UNNEEDED by elogind
@@ -1885,7 +1896,7 @@ int cg_create_everywhere(CGroupMask supported, CGroupMask mask, const char *path
          * in all others */
 
         /* First create the cgroup in our own hierarchy. */
-        r = cg_create(ELOGIND_CGROUP_CONTROLLER, path);
+        r = cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
         if (r < 0)
                 return r;
 
@@ -1916,7 +1927,7 @@ int cg_attach_everywhere(CGroupMask supported, const char *path, pid_t pid, cg_m
         CGroupController c;
         int r, unified;
 
-        r = cg_attach(ELOGIND_CGROUP_CONTROLLER, path, pid);
+        r = cg_attach(SYSTEMD_CGROUP_CONTROLLER, path, pid);
         if (r < 0)
                 return r;
 
@@ -1967,7 +1978,7 @@ int cg_migrate_everywhere(CGroupMask supported, const char *from, const char *to
         int r = 0, unified;
 
         if (!path_equal(from, to))  {
-                r = cg_migrate_recursive(ELOGIND_CGROUP_CONTROLLER, from, ELOGIND_CGROUP_CONTROLLER, to, false, true);
+                r = cg_migrate_recursive(SYSTEMD_CGROUP_CONTROLLER, from, SYSTEMD_CGROUP_CONTROLLER, to, false, true);
                 if (r < 0)
                         return r;
         }
@@ -1991,7 +2002,7 @@ int cg_migrate_everywhere(CGroupMask supported, const char *from, const char *to
                         if (!p)
                                 p = to;
 
-                (void) cg_migrate_recursive_fallback(ELOGIND_CGROUP_CONTROLLER, to, cgroup_controller_to_string(c), p, false, false);
+                (void) cg_migrate_recursive_fallback(SYSTEMD_CGROUP_CONTROLLER, to, cgroup_controller_to_string(c), p, false, false);
         }
 
         return 0;
@@ -2001,7 +2012,7 @@ int cg_trim_everywhere(CGroupMask supported, const char *path, bool delete_root)
         CGroupController c;
         int r, unified;
 
-        r = cg_trim(ELOGIND_CGROUP_CONTROLLER, path, delete_root);
+        r = cg_trim(SYSTEMD_CGROUP_CONTROLLER, path, delete_root);
         if (r < 0)
                 return r;
 
@@ -2047,7 +2058,7 @@ int cg_mask_supported(CGroupMask *ret) {
                 if (r < 0)
                         return r;
 
-                r = cg_get_path(ELOGIND_CGROUP_CONTROLLER, root, "cgroup.controllers", &path);
+                r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, root, "cgroup.controllers", &path);
                 if (r < 0)
                         return r;
 
@@ -2073,9 +2084,10 @@ int cg_mask_supported(CGroupMask *ret) {
                         mask |= CGROUP_CONTROLLER_TO_MASK(v);
         }
 
-                /* Currently, we only support the memory controller in
-                 * the unified hierarchy, mask everything else off. */
-                mask &= CGROUP_MASK_MEMORY;
+                /* Currently, we only support the memory and pids
+                 * controller in the unified hierarchy, mask
+                 * everything else off. */
+                mask &= CGROUP_MASK_MEMORY | CGROUP_MASK_PIDS;
 
         } else {
                 CGroupController c;
@@ -2212,7 +2224,7 @@ int cg_enable_everywhere(CGroupMask supported, CGroupMask mask, const char *p) {
         if (!unified) /* on the legacy hiearchy there's no joining of controllers defined */
                 return 0;
 
-        r = cg_get_path(ELOGIND_CGROUP_CONTROLLER, p, "cgroup.subtree_control", &fs);
+        r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, p, "cgroup.subtree_control", &fs);
         if (r < 0)
                 return r;
 
@@ -2280,12 +2292,57 @@ bool cg_is_legacy_wanted(void) {
 }
 #endif // 0
 
+/// UNNEEDED by elogind
+#if 0
+int cg_cpu_shares_parse(const char *s, uint64_t *ret) {
+        uint64_t u;
+        int r;
+
+        if (isempty(s)) {
+                *ret = CGROUP_CPU_SHARES_INVALID;
+                return 0;
+        }
+
+        r = safe_atou64(s, &u);
+        if (r < 0)
+                return r;
+
+        if (u < CGROUP_CPU_SHARES_MIN || u > CGROUP_CPU_SHARES_MAX)
+                return -ERANGE;
+
+        *ret = u;
+        return 0;
+}
+
+int cg_blkio_weight_parse(const char *s, uint64_t *ret) {
+        uint64_t u;
+        int r;
+
+        if (isempty(s)) {
+                *ret = CGROUP_BLKIO_WEIGHT_INVALID;
+                return 0;
+        }
+
+        r = safe_atou64(s, &u);
+        if (r < 0)
+                return r;
+
+        if (u < CGROUP_BLKIO_WEIGHT_MIN || u > CGROUP_BLKIO_WEIGHT_MAX)
+                return -ERANGE;
+
+        *ret = u;
+        return 0;
+}
+#endif // 0
+
 static const char *cgroup_controller_table[_CGROUP_CONTROLLER_MAX] = {
         [CGROUP_CONTROLLER_CPU] = "cpu",
         [CGROUP_CONTROLLER_CPUACCT] = "cpuacct",
         [CGROUP_CONTROLLER_BLKIO] = "blkio",
         [CGROUP_CONTROLLER_MEMORY] = "memory",
-        [CGROUP_CONTROLLER_DEVICE] = "devices",
+        [CGROUP_CONTROLLER_DEVICES] = "devices",
+        [CGROUP_CONTROLLER_PIDS] = "pids",
+        [CGROUP_CONTROLLER_NET_CLS] = "net_cls",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(cgroup_controller, CGroupController);