X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fbasic%2Fcgroup-util.c;h=9dd93d00b0a9d88e780e668c32bcc2b622627862;hp=604ce2b3169c1257efc72f9766ea34a08eb47e64;hb=d77d27f4ca2945f88343fbe72ed0bf1236ad2aa6;hpb=d4ce8390c5aa345602b51099e9d3ed3b74d3ec4d

diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
index 604ce2b31..9dd93d00b 100644
--- a/src/basic/cgroup-util.c
+++ b/src/basic/cgroup-util.c
@@ -889,6 +889,43 @@ int cg_set_task_access(
 
         return 0;
 }
+
+int cg_set_xattr(const char *controller, const char *path, const char *name, const void *value, size_t size, int flags) {
+        _cleanup_free_ char *fs = NULL;
+        int r;
+
+        assert(path);
+        assert(name);
+        assert(value || size <= 0);
+
+        r = cg_get_path(controller, path, NULL, &fs);
+        if (r < 0)
+                return r;
+
+        if (setxattr(fs, name, value, size, flags) < 0)
+                return -errno;
+
+        return 0;
+}
+
+int cg_get_xattr(const char *controller, const char *path, const char *name, void *value, size_t size) {
+        _cleanup_free_ char *fs = NULL;
+        ssize_t n;
+        int r;
+
+        assert(path);
+        assert(name);
+
+        r = cg_get_path(controller, path, NULL, &fs);
+        if (r < 0)
+                return r;
+
+        n = getxattr(fs, name, value, size);
+        if (n < 0)
+                return -errno;
+
+        return (int) n;
+}
 #endif // 0
 
 int cg_pid_get_path(const char *controller, pid_t pid, char **path) {
@@ -1711,7 +1748,7 @@ int cg_path_get_slice(const char *p, char **slice) {
                         if (!e) {
                                 char *s;
 
-                                s = strdup("-.slice");
+                                s = strdup(SPECIAL_ROOT_SLICE);
                                 if (!s)
                                         return -ENOMEM;
 
@@ -1868,7 +1905,7 @@ int cg_slice_to_path(const char *unit, char **ret) {
         assert(unit);
         assert(ret);
 
-        if (streq(unit, "-.slice")) {
+        if (streq(unit, SPECIAL_ROOT_SLICE)) {
                 char *x;
 
                 x = strdup("");
@@ -2417,9 +2454,6 @@ bool cg_is_unified_wanted(void) {
 bool cg_is_legacy_wanted(void) {
         return !cg_is_unified_wanted();
 }
-#else
-bool cg_is_legacy_wanted(void) {
-        return true;
 
 bool cg_is_unified_systemd_controller_wanted(void) {
         static thread_local int wanted = -1;
@@ -2444,8 +2478,10 @@ bool cg_is_unified_systemd_controller_wanted(void) {
 
         r = get_proc_cmdline_key("systemd.legacy_systemd_cgroup_controller", NULL);
         if (r > 0) {
+        if (r > 0)
                 wanted = false;
         } else {
+        else {
                 _cleanup_free_ char *value = NULL;
 
                 r = get_proc_cmdline_key("systemd.legacy_systemd_cgroup_controller=", &value);
@@ -2464,6 +2500,10 @@ bool cg_is_unified_systemd_controller_wanted(void) {
 bool cg_is_legacy_systemd_controller_wanted(void) {
         return cg_is_legacy_wanted() && !cg_is_unified_systemd_controller_wanted();
 }
+#else
+bool cg_is_legacy_wanted(void) {
+        return true;
+}
 #endif // 0
 
 #if 0 /// UNNEEDED by elogind
@@ -2544,6 +2584,20 @@ int cg_blkio_weight_parse(const char *s, uint64_t *ret) {
 }
 #endif // 0
 
+bool is_cgroup_fs(const struct statfs *s) {
+        return is_fs_type(s, CGROUP_SUPER_MAGIC) ||
+               is_fs_type(s, CGROUP2_SUPER_MAGIC);
+}
+
+bool fd_is_cgroup_fs(int fd) {
+        struct statfs s;
+
+        if (fstatfs(fd, &s) < 0)
+                return -errno;
+
+        return is_cgroup_fs(&s);
+}
+
 static const char *cgroup_controller_table[_CGROUP_CONTROLLER_MAX] = {
         [CGROUP_CONTROLLER_CPU] = "cpu",
         [CGROUP_CONTROLLER_CPUACCT] = "cpuacct",