int cg_migrate_recursive( const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool rem) { _cleanup_closedir_ DIR *d = NULL; int r, ret = 0; char *fn; assert(cfrom); assert(pfrom); assert(cto); assert(pto); ret = cg_migrate(cfrom, pfrom, cto, pto, ignore_self); r = cg_enumerate_subgroups(cfrom, pfrom, &d); if (r < 0) { if (ret >= 0 && r != -ENOENT) return r; return ret; } while ((r = cg_read_subgroup(d, &fn)) > 0) { _cleanup_free_ char *p = NULL; p = strjoin(pfrom, "/", fn, NULL); free(fn); if (!p) { if (ret >= 0) return -ENOMEM; return ret; } r = cg_migrate_recursive(cfrom, p, cto, pto, ignore_self, rem); if (r != 0 && ret >= 0) ret = r; } if (r < 0 && ret >= 0) ret = r; if (rem) { r = cg_rmdir(cfrom, pfrom); if (r < 0 && ret >= 0 && r != -ENOENT && r != -EBUSY) return r; } return ret; }
int cg_migrate_recursive(const char *controller, const char *from, const char *to, bool ignore_self, bool rem) { int r, ret = 0; DIR *d = NULL; char *fn; assert(controller); assert(from); assert(to); ret = cg_migrate(controller, from, to, ignore_self); if ((r = cg_enumerate_subgroups(controller, from, &d)) < 0) { if (ret >= 0 && r != -ENOENT) ret = r; goto finish; } while ((r = cg_read_subgroup(d, &fn)) > 0) { char *p = NULL; r = asprintf(&p, "%s/%s", from, fn); free(fn); if (r < 0) { if (ret >= 0) ret = -ENOMEM; goto finish; } r = cg_migrate_recursive(controller, p, to, ignore_self, rem); free(p); if (r != 0 && ret >= 0) ret = r; } 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); return ret; }
static int do_cg_rmdir(const char *path) { int (*cg_rmdir)(const char *path); char *error; dlerror(); /* Clear any existing error */ cg_rmdir = (int (*)(const char *path)) dlsym(dlopen_handle, "cg_rmdir"); error = dlerror(); if (error != NULL) { fprintf(stderr, "cg_rmdir: %s\n", error); return -1; } return cg_rmdir(path); }
int cg_kill_recursive(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, bool rem, Set *s) { _cleanup_set_free_ Set *allocated_set = NULL; _cleanup_closedir_ DIR *d = NULL; int r, ret = 0; char *fn; assert(path); assert(sig >= 0); if (!s) { s = allocated_set = set_new(NULL); if (!s) return -ENOMEM; } ret = cg_kill(controller, path, sig, sigcont, ignore_self, s); r = cg_enumerate_subgroups(controller, path, &d); if (r < 0) { if (ret >= 0 && r != -ENOENT) return r; return ret; } while ((r = cg_read_subgroup(d, &fn)) > 0) { _cleanup_free_ char *p = NULL; p = strjoin(path, "/", fn, NULL); free(fn); if (!p) return -ENOMEM; r = cg_kill_recursive(controller, p, sig, sigcont, ignore_self, rem, s); if (ret >= 0 && r != 0) ret = r; } if (ret >= 0 && r < 0) ret = r; if (rem) { r = cg_rmdir(controller, path); if (r < 0 && ret >= 0 && r != -ENOENT && r != -EBUSY) return r; } return ret; }
int cg_kill_recursive(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, bool rem, Set *s) { int r, ret = 0; DIR *d = NULL; char *fn; Set *allocated_set = NULL; assert(path); assert(controller); assert(sig >= 0); if (!s) if (!(s = allocated_set = set_new(trivial_hash_func, trivial_compare_func))) return -ENOMEM; ret = cg_kill(controller, path, sig, sigcont, ignore_self, s); if ((r = cg_enumerate_subgroups(controller, path, &d)) < 0) { if (ret >= 0 && r != -ENOENT) ret = r; goto finish; } while ((r = cg_read_subgroup(d, &fn)) > 0) { char *p = NULL; r = asprintf(&p, "%s/%s", path, fn); free(fn); if (r < 0) { if (ret >= 0) ret = -ENOMEM; goto finish; } r = cg_kill_recursive(controller, p, sig, sigcont, ignore_self, rem, s); free(p); if (r != 0 && ret >= 0) ret = r; } if (r < 0 && ret >= 0) ret = r; if (rem) if ((r = cg_rmdir(controller, path, true)) < 0) { if (ret >= 0 && r != -ENOENT && r != -EBUSY) ret = r; } finish: if (d) closedir(d); if (allocated_set) set_free(allocated_set); return ret; }
int main(int argc, char *argv[]) { char *path; char *c, *p; assert_se(cg_create(SYSTEMD_CGROUP_CONTROLLER, "/test-a") == 0); assert_se(cg_create(SYSTEMD_CGROUP_CONTROLLER, "/test-a") == 0); assert_se(cg_create(SYSTEMD_CGROUP_CONTROLLER, "/test-b") == 0); assert_se(cg_create(SYSTEMD_CGROUP_CONTROLLER, "/test-b/test-c") == 0); assert_se(cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, "/test-b", 0) == 0); assert_se(cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, getpid_cached(), &path) == 0); assert_se(streq(path, "/test-b")); free(path); assert_se(cg_attach(SYSTEMD_CGROUP_CONTROLLER, "/test-a", 0) == 0); assert_se(cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, getpid_cached(), &path) == 0); assert_se(path_equal(path, "/test-a")); free(path); assert_se(cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, "/test-b/test-d", 0) == 0); assert_se(cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, getpid_cached(), &path) == 0); assert_se(path_equal(path, "/test-b/test-d")); free(path); assert_se(cg_get_path(SYSTEMD_CGROUP_CONTROLLER, "/test-b/test-d", NULL, &path) == 0); assert_se(path_equal(path, "/sys/fs/cgroup/systemd/test-b/test-d")); free(path); assert_se(cg_is_empty(SYSTEMD_CGROUP_CONTROLLER, "/test-a") > 0); assert_se(cg_is_empty(SYSTEMD_CGROUP_CONTROLLER, "/test-b") > 0); assert_se(cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, "/test-a") > 0); assert_se(cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, "/test-b") == 0); assert_se(cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, "/test-a", 0, 0, NULL, NULL, NULL) == 0); assert_se(cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, "/test-b", 0, 0, NULL, NULL, NULL) > 0); assert_se(cg_migrate_recursive(SYSTEMD_CGROUP_CONTROLLER, "/test-b", SYSTEMD_CGROUP_CONTROLLER, "/test-a", 0) > 0); assert_se(cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, "/test-a") == 0); assert_se(cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, "/test-b") > 0); assert_se(cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, "/test-a", 0, 0, NULL, NULL, NULL) > 0); assert_se(cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, "/test-b", 0, 0, NULL, NULL, NULL) == 0); cg_trim(SYSTEMD_CGROUP_CONTROLLER, "/", false); assert_se(cg_rmdir(SYSTEMD_CGROUP_CONTROLLER, "/test-b") < 0); assert_se(cg_rmdir(SYSTEMD_CGROUP_CONTROLLER, "/test-a") >= 0); assert_se(cg_split_spec("foobar:/", &c, &p) == 0); assert_se(streq(c, "foobar")); assert_se(streq(p, "/")); free(c); free(p); assert_se(cg_split_spec("foobar:", &c, &p) < 0); assert_se(cg_split_spec("foobar:asdfd", &c, &p) < 0); assert_se(cg_split_spec(":///", &c, &p) < 0); assert_se(cg_split_spec(":", &c, &p) < 0); assert_se(cg_split_spec("", &c, &p) < 0); assert_se(cg_split_spec("fo/obar:/", &c, &p) < 0); assert_se(cg_split_spec("/", &c, &p) >= 0); assert_se(c == NULL); assert_se(streq(p, "/")); free(p); assert_se(cg_split_spec("foo", &c, &p) >= 0); assert_se(streq(c, "foo")); assert_se(p == NULL); free(c); return 0; }