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Diffstat (limited to 'src/shared/cgroup-util.c')
-rw-r--r--src/shared/cgroup-util.c116
1 files changed, 55 insertions, 61 deletions
diff --git a/src/shared/cgroup-util.c b/src/shared/cgroup-util.c
index 18cbf0412a..9dfab2eaac 100644
--- a/src/shared/cgroup-util.c
+++ b/src/shared/cgroup-util.c
@@ -374,18 +374,20 @@ int cg_kill_recursive_and_wait(const char *controller, const char *path, bool re
return 0;
}
-int cg_migrate(const char *controller, const char *from, const char *to, bool ignore_self) {
+int cg_migrate(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self) {
bool done = false;
- Set *s;
+ _cleanup_set_free_ Set *s = NULL;
int r, ret = 0;
pid_t my_pid;
- FILE *f = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
- assert(controller);
- assert(from);
- assert(to);
+ assert(cfrom);
+ assert(pfrom);
+ assert(cto);
+ assert(pto);
- if (!(s = set_new(trivial_hash_func, trivial_compare_func)))
+ s = set_new(trivial_hash_func, trivial_compare_func);
+ if (!s)
return -ENOMEM;
my_pid = getpid();
@@ -394,11 +396,12 @@ int cg_migrate(const char *controller, const char *from, const char *to, bool ig
pid_t pid = 0;
done = true;
- if ((r = cg_enumerate_tasks(controller, from, &f)) < 0) {
+ r = cg_enumerate_tasks(cfrom, pfrom, &f);
+ if (r < 0) {
if (ret >= 0 && r != -ENOENT)
ret = r;
- goto finish;
+ return ret;
}
while ((r = cg_read_pid(f, &pid)) > 0) {
@@ -412,7 +415,8 @@ int cg_migrate(const char *controller, const char *from, const char *to, bool ig
if (set_get(s, LONG_TO_PTR(pid)) == LONG_TO_PTR(pid))
continue;
- if ((r = cg_attach(controller, to, pid)) < 0) {
+ r = cg_attach(cto, pto, pid);
+ if (r < 0) {
if (ret >= 0 && r != -ESRCH)
ret = r;
} else if (ret == 0)
@@ -420,11 +424,12 @@ int cg_migrate(const char *controller, const char *from, const char *to, bool ig
done = false;
- if ((r = set_put(s, LONG_TO_PTR(pid))) < 0) {
+ r = set_put(s, LONG_TO_PTR(pid));
+ if (r < 0) {
if (ret >= 0)
ret = r;
- goto finish;
+ return ret;
}
}
@@ -432,56 +437,48 @@ int cg_migrate(const char *controller, const char *from, const char *to, bool ig
if (ret >= 0)
ret = r;
- goto finish;
+ return ret;
}
fclose(f);
f = NULL;
-
} while (!done);
-finish:
- set_free(s);
-
- if (f)
- fclose(f);
-
return ret;
}
-int cg_migrate_recursive(const char *controller, const char *from, const char *to, bool ignore_self, bool rem) {
+int cg_migrate_recursive(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool rem) {
int r, ret = 0;
- DIR *d = NULL;
+ _cleanup_closedir_ DIR *d = NULL;
char *fn;
- assert(controller);
- assert(from);
- assert(to);
+ assert(cfrom);
+ assert(pfrom);
+ assert(cto);
+ assert(pto);
- ret = cg_migrate(controller, from, to, ignore_self);
+ ret = cg_migrate(cfrom, pfrom, cto, pto, ignore_self);
- if ((r = cg_enumerate_subgroups(controller, from, &d)) < 0) {
+ r = cg_enumerate_subgroups(cfrom, pfrom, &d);
+ if (r < 0) {
if (ret >= 0 && r != -ENOENT)
ret = r;
- goto finish;
+ return ret;
}
while ((r = cg_read_subgroup(d, &fn)) > 0) {
- char *p = NULL;
+ _cleanup_free_ char *p = NULL;
- r = asprintf(&p, "%s/%s", from, fn);
+ p = strjoin(pfrom, "/", fn, NULL);
free(fn);
-
- if (r < 0) {
+ if (!p) {
if (ret >= 0)
ret = -ENOMEM;
- goto finish;
+ return ret;
}
- r = cg_migrate_recursive(controller, p, to, ignore_self, rem);
- free(p);
-
+ r = cg_migrate_recursive(cfrom, p, cto, pto, ignore_self, rem);
if (r != 0 && ret >= 0)
ret = r;
}
@@ -489,17 +486,11 @@ int cg_migrate_recursive(const char *controller, const char *from, const char *t
if (r < 0 && ret >= 0)
ret = r;
- if (rem)
- if ((r = cg_rmdir(controller, from, true)) < 0) {
- if (ret >= 0 &&
- r != -ENOENT &&
- r != -EBUSY)
- ret = r;
- }
-
-finish:
- if (d)
- closedir(d);
+ if (rem) {
+ r = cg_rmdir(cfrom, pfrom, true);
+ if (r < 0 && ret >= 0 && r != -ENOENT && r != -EBUSY)
+ return r;
+ }
return ret;
}
@@ -677,7 +668,7 @@ int cg_delete(const char *controller, const char *path) {
if ((r = path_get_parent(path, &parent)) < 0)
return r;
- r = cg_migrate_recursive(controller, path, parent, false, true);
+ r = cg_migrate_recursive(controller, path, controller, parent, false, true);
free(parent);
return r == -ENOENT ? 0 : r;
@@ -947,7 +938,6 @@ int cg_is_empty_by_spec(const char *spec, bool ignore_self) {
return cg_is_empty(controller, path, ignore_self);
}
-
int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_self) {
int r;
DIR *d = NULL;
@@ -997,12 +987,12 @@ int cg_split_spec(const char *spec, char **controller, char **path) {
char *t = NULL, *u = NULL;
assert(spec);
- assert(controller || path);
if (*spec == '/') {
if (path) {
- if (!(t = strdup(spec)))
+ t = strdup(spec);
+ if (!t)
return -ENOMEM;
*path = t;
@@ -1014,13 +1004,14 @@ int cg_split_spec(const char *spec, char **controller, char **path) {
return 0;
}
- if (!(e = strchr(spec, ':'))) {
-
+ e = strchr(spec, ':');
+ if (!e) {
if (strchr(spec, '/') || spec[0] == 0)
return -EINVAL;
if (controller) {
- if (!(t = strdup(spec)))
+ t = strdup(spec);
+ if (!t)
return -ENOMEM;
*controller = t;
@@ -1032,20 +1023,23 @@ int cg_split_spec(const char *spec, char **controller, char **path) {
return 0;
}
- if (e[1] != '/' ||
- e == spec ||
- memchr(spec, '/', e-spec))
+ if (e[1] != '/' || e == spec || memchr(spec, '/', e-spec))
return -EINVAL;
- if (controller)
- if (!(t = strndup(spec, e-spec)))
+ if (controller) {
+ t = strndup(spec, e-spec);
+ if (!t)
return -ENOMEM;
- if (path)
- if (!(u = strdup(e+1))) {
+ }
+
+ if (path) {
+ u = strdup(e+1);
+ if (!u) {
free(t);
return -ENOMEM;
}
+ }
if (controller)
*controller = t;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-07 19:13:07 +0000