mirror of
https://github.com/systemd/systemd.git
synced 2024-11-07 01:27:11 +03:00
53e1b68390
This follows what the kernel is doing, c.f. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460.
434 lines
16 KiB
C
434 lines
16 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
/***
|
|
This file is part of systemd.
|
|
|
|
Copyright 2013 Zbigniew Jędrzejewski-Szmek
|
|
|
|
systemd is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
systemd is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
***/
|
|
|
|
#include "alloc-util.h"
|
|
#include "build.h"
|
|
#include "cgroup-util.h"
|
|
#include "dirent-util.h"
|
|
#include "fd-util.h"
|
|
#include "format-util.h"
|
|
#include "parse-util.h"
|
|
#include "proc-cmdline.h"
|
|
#include "process-util.h"
|
|
#include "stat-util.h"
|
|
#include "string-util.h"
|
|
#include "test-helper.h"
|
|
#include "user-util.h"
|
|
#include "util.h"
|
|
|
|
static void check_p_d_u(const char *path, int code, const char *result) {
|
|
_cleanup_free_ char *unit = NULL;
|
|
int r;
|
|
|
|
r = cg_path_decode_unit(path, &unit);
|
|
printf("%s: %s → %s %d expected %s %d\n", __func__, path, unit, r, result, code);
|
|
assert_se(r == code);
|
|
assert_se(streq_ptr(unit, result));
|
|
}
|
|
|
|
static void test_path_decode_unit(void) {
|
|
check_p_d_u("getty@tty2.service", 0, "getty@tty2.service");
|
|
check_p_d_u("getty@tty2.service/", 0, "getty@tty2.service");
|
|
check_p_d_u("getty@tty2.service/xxx", 0, "getty@tty2.service");
|
|
check_p_d_u("getty@.service/", -ENXIO, NULL);
|
|
check_p_d_u("getty@.service", -ENXIO, NULL);
|
|
check_p_d_u("getty.service", 0, "getty.service");
|
|
check_p_d_u("getty", -ENXIO, NULL);
|
|
check_p_d_u("getty/waldo", -ENXIO, NULL);
|
|
check_p_d_u("_cpu.service", 0, "cpu.service");
|
|
}
|
|
|
|
static void check_p_g_u(const char *path, int code, const char *result) {
|
|
_cleanup_free_ char *unit = NULL;
|
|
int r;
|
|
|
|
r = cg_path_get_unit(path, &unit);
|
|
printf("%s: %s → %s %d expected %s %d\n", __func__, path, unit, r, result, code);
|
|
assert_se(r == code);
|
|
assert_se(streq_ptr(unit, result));
|
|
}
|
|
|
|
static void test_path_get_unit(void) {
|
|
check_p_g_u("/system.slice/foobar.service/sdfdsaf", 0, "foobar.service");
|
|
check_p_g_u("/system.slice/getty@tty5.service", 0, "getty@tty5.service");
|
|
check_p_g_u("/system.slice/getty@tty5.service/aaa/bbb", 0, "getty@tty5.service");
|
|
check_p_g_u("/system.slice/getty@tty5.service/", 0, "getty@tty5.service");
|
|
check_p_g_u("/system.slice/getty@tty6.service/tty5", 0, "getty@tty6.service");
|
|
check_p_g_u("sadfdsafsda", -ENXIO, NULL);
|
|
check_p_g_u("/system.slice/getty####@tty6.service/xxx", -ENXIO, NULL);
|
|
check_p_g_u("/system.slice/system-waldo.slice/foobar.service/sdfdsaf", 0, "foobar.service");
|
|
check_p_g_u("/system.slice/system-waldo.slice/_cpu.service/sdfdsaf", 0, "cpu.service");
|
|
check_p_g_u("/user.slice/user-1000.slice/user@1000.service/server.service", 0, "user@1000.service");
|
|
check_p_g_u("/user.slice/user-1000.slice/user@.service/server.service", -ENXIO, NULL);
|
|
}
|
|
|
|
static void check_p_g_u_u(const char *path, int code, const char *result) {
|
|
_cleanup_free_ char *unit = NULL;
|
|
int r;
|
|
|
|
r = cg_path_get_user_unit(path, &unit);
|
|
printf("%s: %s → %s %d expected %s %d\n", __func__, path, unit, r, result, code);
|
|
assert_se(r == code);
|
|
assert_se(streq_ptr(unit, result));
|
|
}
|
|
|
|
static void test_path_get_user_unit(void) {
|
|
check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/foobar.service", 0, "foobar.service");
|
|
check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/waldo.slice/foobar.service", 0, "foobar.service");
|
|
check_p_g_u_u("/user.slice/user-1002.slice/session-2.scope/foobar.service/waldo", 0, "foobar.service");
|
|
check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/foobar.service/waldo/uuuux", 0, "foobar.service");
|
|
check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/waldo/waldo/uuuux", -ENXIO, NULL);
|
|
check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/foobar@pie.service/pa/po", 0, "foobar@pie.service");
|
|
check_p_g_u_u("/session-2.scope/foobar@pie.service/pa/po", 0, "foobar@pie.service");
|
|
check_p_g_u_u("/xyz.slice/xyz-waldo.slice/session-77.scope/foobar@pie.service/pa/po", 0, "foobar@pie.service");
|
|
check_p_g_u_u("/meh.service", -ENXIO, NULL);
|
|
check_p_g_u_u("/session-3.scope/_cpu.service", 0, "cpu.service");
|
|
check_p_g_u_u("/user.slice/user-1000.slice/user@1000.service/server.service", 0, "server.service");
|
|
check_p_g_u_u("/user.slice/user-1000.slice/user@1000.service/foobar.slice/foobar@pie.service", 0, "foobar@pie.service");
|
|
check_p_g_u_u("/user.slice/user-1000.slice/user@.service/server.service", -ENXIO, NULL);
|
|
}
|
|
|
|
static void check_p_g_s(const char *path, int code, const char *result) {
|
|
_cleanup_free_ char *s = NULL;
|
|
|
|
assert_se(cg_path_get_session(path, &s) == code);
|
|
assert_se(streq_ptr(s, result));
|
|
}
|
|
|
|
static void test_path_get_session(void) {
|
|
check_p_g_s("/user.slice/user-1000.slice/session-2.scope/foobar.service", 0, "2");
|
|
check_p_g_s("/session-3.scope", 0, "3");
|
|
check_p_g_s("/session-.scope", -ENXIO, NULL);
|
|
check_p_g_s("", -ENXIO, NULL);
|
|
}
|
|
|
|
static void check_p_g_o_u(const char *path, int code, uid_t result) {
|
|
uid_t uid = 0;
|
|
|
|
assert_se(cg_path_get_owner_uid(path, &uid) == code);
|
|
assert_se(uid == result);
|
|
}
|
|
|
|
static void test_path_get_owner_uid(void) {
|
|
check_p_g_o_u("/user.slice/user-1000.slice/session-2.scope/foobar.service", 0, 1000);
|
|
check_p_g_o_u("/user.slice/user-1006.slice", 0, 1006);
|
|
check_p_g_o_u("", -ENXIO, 0);
|
|
}
|
|
|
|
static void check_p_g_slice(const char *path, int code, const char *result) {
|
|
_cleanup_free_ char *s = NULL;
|
|
|
|
assert_se(cg_path_get_slice(path, &s) == code);
|
|
assert_se(streq_ptr(s, result));
|
|
}
|
|
|
|
static void test_path_get_slice(void) {
|
|
check_p_g_slice("/user.slice", 0, "user.slice");
|
|
check_p_g_slice("/foobar", 0, "-.slice");
|
|
check_p_g_slice("/user.slice/user-waldo.slice", 0, "user-waldo.slice");
|
|
check_p_g_slice("", 0, "-.slice");
|
|
check_p_g_slice("foobar", 0, "-.slice");
|
|
check_p_g_slice("foobar.slice", 0, "foobar.slice");
|
|
check_p_g_slice("foo.slice/foo-bar.slice/waldo.service", 0, "foo-bar.slice");
|
|
}
|
|
|
|
static void check_p_g_u_slice(const char *path, int code, const char *result) {
|
|
_cleanup_free_ char *s = NULL;
|
|
|
|
assert_se(cg_path_get_user_slice(path, &s) == code);
|
|
assert_se(streq_ptr(s, result));
|
|
}
|
|
|
|
static void test_path_get_user_slice(void) {
|
|
check_p_g_u_slice("/user.slice", -ENXIO, NULL);
|
|
check_p_g_u_slice("/foobar", -ENXIO, NULL);
|
|
check_p_g_u_slice("/user.slice/user-waldo.slice", -ENXIO, NULL);
|
|
check_p_g_u_slice("", -ENXIO, NULL);
|
|
check_p_g_u_slice("foobar", -ENXIO, NULL);
|
|
check_p_g_u_slice("foobar.slice", -ENXIO, NULL);
|
|
check_p_g_u_slice("foo.slice/foo-bar.slice/waldo.service", -ENXIO, NULL);
|
|
|
|
check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service", 0, "-.slice");
|
|
check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service/", 0, "-.slice");
|
|
check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service///", 0, "-.slice");
|
|
check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service/waldo.service", 0, "-.slice");
|
|
check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service/piep.slice/foo.service", 0, "piep.slice");
|
|
check_p_g_u_slice("/foo.slice//foo-bar.slice/user@1000.service/piep.slice//piep-pap.slice//foo.service", 0, "piep-pap.slice");
|
|
}
|
|
|
|
static void test_get_paths(void) {
|
|
_cleanup_free_ char *a = NULL;
|
|
|
|
assert_se(cg_get_root_path(&a) >= 0);
|
|
log_info("Root = %s", a);
|
|
}
|
|
|
|
static void test_proc(void) {
|
|
_cleanup_closedir_ DIR *d = NULL;
|
|
struct dirent *de;
|
|
int r;
|
|
|
|
d = opendir("/proc");
|
|
assert_se(d);
|
|
|
|
FOREACH_DIRENT(de, d, break) {
|
|
_cleanup_free_ char *path = NULL, *path_shifted = NULL, *session = NULL, *unit = NULL, *user_unit = NULL, *machine = NULL, *slice = NULL;
|
|
pid_t pid;
|
|
uid_t uid = UID_INVALID;
|
|
|
|
if (!IN_SET(de->d_type, DT_DIR, DT_UNKNOWN))
|
|
continue;
|
|
|
|
r = parse_pid(de->d_name, &pid);
|
|
if (r < 0)
|
|
continue;
|
|
|
|
if (is_kernel_thread(pid))
|
|
continue;
|
|
|
|
cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &path);
|
|
cg_pid_get_path_shifted(pid, NULL, &path_shifted);
|
|
cg_pid_get_owner_uid(pid, &uid);
|
|
cg_pid_get_session(pid, &session);
|
|
cg_pid_get_unit(pid, &unit);
|
|
cg_pid_get_user_unit(pid, &user_unit);
|
|
cg_pid_get_machine_name(pid, &machine);
|
|
cg_pid_get_slice(pid, &slice);
|
|
|
|
printf(PID_FMT"\t%s\t%s\t"UID_FMT"\t%s\t%s\t%s\t%s\t%s\n",
|
|
pid,
|
|
path,
|
|
path_shifted,
|
|
uid,
|
|
session,
|
|
unit,
|
|
user_unit,
|
|
machine,
|
|
slice);
|
|
}
|
|
}
|
|
|
|
static void test_escape_one(const char *s, const char *r) {
|
|
_cleanup_free_ char *b;
|
|
|
|
b = cg_escape(s);
|
|
assert_se(b);
|
|
assert_se(streq(b, r));
|
|
|
|
assert_se(streq(cg_unescape(b), s));
|
|
}
|
|
|
|
static void test_escape(void) {
|
|
test_escape_one("foobar", "foobar");
|
|
test_escape_one(".foobar", "_.foobar");
|
|
test_escape_one("foobar.service", "foobar.service");
|
|
test_escape_one("cgroup.service", "_cgroup.service");
|
|
test_escape_one("tasks", "_tasks");
|
|
if (access("/sys/fs/cgroup/cpu", F_OK) == 0)
|
|
test_escape_one("cpu.service", "_cpu.service");
|
|
test_escape_one("_foobar", "__foobar");
|
|
test_escape_one("", "_");
|
|
test_escape_one("_", "__");
|
|
test_escape_one(".", "_.");
|
|
}
|
|
|
|
static void test_controller_is_valid(void) {
|
|
assert_se(cg_controller_is_valid("foobar"));
|
|
assert_se(cg_controller_is_valid("foo_bar"));
|
|
assert_se(cg_controller_is_valid("name=foo"));
|
|
assert_se(!cg_controller_is_valid(""));
|
|
assert_se(!cg_controller_is_valid("name="));
|
|
assert_se(!cg_controller_is_valid("="));
|
|
assert_se(!cg_controller_is_valid("cpu,cpuacct"));
|
|
assert_se(!cg_controller_is_valid("_"));
|
|
assert_se(!cg_controller_is_valid("_foobar"));
|
|
assert_se(!cg_controller_is_valid("tatü"));
|
|
}
|
|
|
|
static void test_slice_to_path_one(const char *unit, const char *path, int error) {
|
|
_cleanup_free_ char *ret = NULL;
|
|
|
|
assert_se(cg_slice_to_path(unit, &ret) == error);
|
|
assert_se(streq_ptr(ret, path));
|
|
}
|
|
|
|
static void test_slice_to_path(void) {
|
|
|
|
test_slice_to_path_one("foobar.slice", "foobar.slice", 0);
|
|
test_slice_to_path_one("foobar-waldo.slice", "foobar.slice/foobar-waldo.slice", 0);
|
|
test_slice_to_path_one("foobar-waldo.service", NULL, -EINVAL);
|
|
test_slice_to_path_one("-.slice", "", 0);
|
|
test_slice_to_path_one("--.slice", NULL, -EINVAL);
|
|
test_slice_to_path_one("-", NULL, -EINVAL);
|
|
test_slice_to_path_one("-foo-.slice", NULL, -EINVAL);
|
|
test_slice_to_path_one("-foo.slice", NULL, -EINVAL);
|
|
test_slice_to_path_one("foo-.slice", NULL, -EINVAL);
|
|
test_slice_to_path_one("foo--bar.slice", NULL, -EINVAL);
|
|
test_slice_to_path_one("foo.slice/foo--bar.slice", NULL, -EINVAL);
|
|
test_slice_to_path_one("a-b.slice", "a.slice/a-b.slice", 0);
|
|
test_slice_to_path_one("a-b-c-d-e.slice", "a.slice/a-b.slice/a-b-c.slice/a-b-c-d.slice/a-b-c-d-e.slice", 0);
|
|
}
|
|
|
|
static void test_shift_path_one(const char *raw, const char *root, const char *shifted) {
|
|
const char *s = NULL;
|
|
|
|
assert_se(cg_shift_path(raw, root, &s) >= 0);
|
|
assert_se(streq(s, shifted));
|
|
}
|
|
|
|
static void test_shift_path(void) {
|
|
|
|
test_shift_path_one("/foobar/waldo", "/", "/foobar/waldo");
|
|
test_shift_path_one("/foobar/waldo", "", "/foobar/waldo");
|
|
test_shift_path_one("/foobar/waldo", "/foobar", "/waldo");
|
|
test_shift_path_one("/foobar/waldo", "/fuckfuck", "/foobar/waldo");
|
|
}
|
|
|
|
static void test_mask_supported(void) {
|
|
|
|
CGroupMask m;
|
|
CGroupController c;
|
|
|
|
assert_se(cg_mask_supported(&m) >= 0);
|
|
|
|
for (c = 0; c < _CGROUP_CONTROLLER_MAX; c++)
|
|
printf("'%s' is supported: %s\n", cgroup_controller_to_string(c), yes_no(m & CGROUP_CONTROLLER_TO_MASK(c)));
|
|
}
|
|
|
|
static void test_is_cgroup_fs(void) {
|
|
struct statfs sfs;
|
|
assert_se(statfs("/sys/fs/cgroup", &sfs) == 0);
|
|
if (is_temporary_fs(&sfs))
|
|
assert_se(statfs("/sys/fs/cgroup/systemd", &sfs) == 0);
|
|
assert_se(is_cgroup_fs(&sfs));
|
|
}
|
|
|
|
static void test_fd_is_cgroup_fs(void) {
|
|
int fd;
|
|
|
|
fd = open("/sys/fs/cgroup", O_RDONLY|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
|
|
assert_se(fd >= 0);
|
|
if (fd_is_temporary_fs(fd)) {
|
|
fd = safe_close(fd);
|
|
fd = open("/sys/fs/cgroup/systemd", O_RDONLY|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
|
|
assert_se(fd >= 0);
|
|
}
|
|
assert_se(fd_is_cgroup_fs(fd));
|
|
fd = safe_close(fd);
|
|
}
|
|
|
|
static void test_is_wanted_print(bool header) {
|
|
_cleanup_free_ char *cmdline = NULL;
|
|
|
|
log_info("-- %s --", __func__);
|
|
assert_se(proc_cmdline(&cmdline) >= 0);
|
|
log_info("cmdline: %s", cmdline);
|
|
if (header) {
|
|
|
|
log_info(_CGROUP_HIEARCHY_);
|
|
(void) system("findmnt -n /sys/fs/cgroup");
|
|
}
|
|
|
|
log_info("is_unified_wanted() → %s", yes_no(cg_is_unified_wanted()));
|
|
log_info("is_hybrid_wanted() → %s", yes_no(cg_is_hybrid_wanted()));
|
|
log_info("is_legacy_wanted() → %s", yes_no(cg_is_legacy_wanted()));
|
|
log_info(" ");
|
|
}
|
|
|
|
static void test_is_wanted(void) {
|
|
assert_se(setenv("SYSTEMD_PROC_CMDLINE",
|
|
"systemd.unified_cgroup_hierarchy", 1) >= 0);
|
|
test_is_wanted_print(false);
|
|
|
|
assert_se(setenv("SYSTEMD_PROC_CMDLINE",
|
|
"systemd.unified_cgroup_hierarchy=0", 1) >= 0);
|
|
test_is_wanted_print(false);
|
|
|
|
assert_se(setenv("SYSTEMD_PROC_CMDLINE",
|
|
"systemd.unified_cgroup_hierarchy=0 "
|
|
"systemd.legacy_systemd_cgroup_controller", 1) >= 0);
|
|
test_is_wanted_print(false);
|
|
|
|
assert_se(setenv("SYSTEMD_PROC_CMDLINE",
|
|
"systemd.unified_cgroup_hierarchy=0 "
|
|
"systemd.legacy_systemd_cgroup_controller=0", 1) >= 0);
|
|
test_is_wanted_print(false);
|
|
}
|
|
|
|
static void test_cg_tests(void) {
|
|
int all, hybrid, systemd, r;
|
|
|
|
r = cg_unified_flush();
|
|
if (r == -ENOMEDIUM) {
|
|
log_notice_errno(r, "Skipping cg hierarchy tests: %m");
|
|
return;
|
|
}
|
|
assert_se(r == 0);
|
|
|
|
all = cg_all_unified();
|
|
assert_se(IN_SET(all, 0, 1));
|
|
|
|
hybrid = cg_hybrid_unified();
|
|
assert_se(IN_SET(hybrid, 0, 1));
|
|
|
|
systemd = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER);
|
|
assert_se(IN_SET(systemd, 0, 1));
|
|
|
|
if (all) {
|
|
assert_se(systemd);
|
|
assert_se(!hybrid);
|
|
|
|
} else if (hybrid) {
|
|
assert_se(systemd);
|
|
assert_se(!all);
|
|
|
|
} else
|
|
assert_se(!systemd);
|
|
}
|
|
|
|
int main(void) {
|
|
log_set_max_level(LOG_DEBUG);
|
|
log_parse_environment();
|
|
log_open();
|
|
|
|
test_path_decode_unit();
|
|
test_path_get_unit();
|
|
test_path_get_user_unit();
|
|
test_path_get_session();
|
|
test_path_get_owner_uid();
|
|
test_path_get_slice();
|
|
test_path_get_user_slice();
|
|
TEST_REQ_RUNNING_SYSTEMD(test_get_paths());
|
|
test_proc();
|
|
TEST_REQ_RUNNING_SYSTEMD(test_escape());
|
|
test_controller_is_valid();
|
|
test_slice_to_path();
|
|
test_shift_path();
|
|
TEST_REQ_RUNNING_SYSTEMD(test_mask_supported());
|
|
TEST_REQ_RUNNING_SYSTEMD(test_is_cgroup_fs());
|
|
TEST_REQ_RUNNING_SYSTEMD(test_fd_is_cgroup_fs());
|
|
test_is_wanted_print(true);
|
|
test_is_wanted_print(false); /* run twice to test caching */
|
|
test_is_wanted();
|
|
test_cg_tests();
|
|
|
|
return 0;
|
|
}
|