ae018d9bc9
Session objects will now get the .session suffix, user objects the .user suffix, nspawn containers the .nspawn suffix. This also changes the user cgroups to be named after the numeric UID rather than the username, since this allows us the parse these paths standalone without requiring access to the cgroup file system. This also changes the mapping of instanced units to cgroups. Instead of mapping foo@bar.service to the cgroup path /user/foo@.service/bar we will now map it to /user/foo@.service/foo@bar.service, in order to ensure that all our objects are properly suffixed in the tree.
166 lines
5.8 KiB
C
166 lines
5.8 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <assert.h>
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#include "util.h"
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#include "cgroup-util.h"
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static void check_p_d_u(const char *path, int code, const char *result) {
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_cleanup_free_ char *unit = NULL;
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assert_se(cg_path_decode_unit(path, &unit) == code);
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assert_se(streq_ptr(unit, result));
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}
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static void test_path_decode_unit(void) {
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check_p_d_u("getty@.service/getty@tty2.service", 0, "getty@tty2.service");
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check_p_d_u("getty@.service/getty@tty2.service/xxx", 0, "getty@tty2.service");
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check_p_d_u("getty@.service/", -EINVAL, NULL);
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check_p_d_u("getty@.service", -EINVAL, NULL);
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check_p_d_u("getty.service", 0, "getty.service");
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check_p_d_u("getty", -EINVAL, NULL);
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}
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static void check_p_g_u(const char *path, int code, const char *result) {
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_cleanup_free_ char *unit = NULL;
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assert_se(cg_path_get_unit(path, &unit) == code);
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assert_se(streq_ptr(unit, result));
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}
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static void check_p_g_u_u(const char *path, int code, const char *result) {
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_cleanup_free_ char *unit = NULL;
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assert_se(cg_path_get_user_unit(path, &unit) == code);
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assert_se(streq_ptr(unit, result));
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}
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static void test_path_get_unit(void) {
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check_p_g_u("/system/foobar.service/sdfdsaf", 0, "foobar.service");
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check_p_g_u("/system/getty@.service/getty@tty5.service", 0, "getty@tty5.service");
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check_p_g_u("/system/getty@.service/getty@tty5.service/aaa/bbb", 0, "getty@tty5.service");
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check_p_g_u("/system/getty@.service/getty@tty5.service/", 0, "getty@tty5.service");
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check_p_g_u("/system/getty@tty6.service/tty5", 0, "getty@tty6.service");
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check_p_g_u("sadfdsafsda", -ENOENT, NULL);
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check_p_g_u("/system/getty####@tty6.service/tty5", -EINVAL, NULL);
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}
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static void test_path_get_user_unit(void) {
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check_p_g_u_u("/user/lennart/2/systemd-21548/foobar.service", 0, "foobar.service");
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check_p_g_u_u("/user/lennart/2/systemd-21548/foobar.service/waldo", 0, "foobar.service");
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check_p_g_u_u("/user/lennart/2/systemd-21548/foobar.service/waldo/uuuux", 0, "foobar.service");
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check_p_g_u_u("/user/lennart/2/systemd-21548/waldo/waldo/uuuux", -EINVAL, NULL);
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check_p_g_u_u("/user/lennart/2/foobar.service", -ENOENT, NULL);
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check_p_g_u_u("/user/lennart/2/systemd-21548/foobar@.service/foobar@pie.service/pa/po", 0, "foobar@pie.service");
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}
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static void test_get_paths(void) {
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_cleanup_free_ char *a = NULL, *b = NULL, *c = NULL, *d = NULL;
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assert_se(cg_get_root_path(&a) >= 0);
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log_info("Root = %s", a);
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assert_se(cg_get_system_path(&b) >= 0);
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log_info("System = %s", b);
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assert_se(cg_get_user_path(&c) >= 0);
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log_info("User = %s", c);
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assert_se(cg_get_machine_path(&d) >= 0);
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log_info("Machine = %s", d);
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}
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static void test_proc(void) {
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_cleanup_closedir_ DIR *d = NULL;
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struct dirent *de;
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int r;
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d = opendir("/proc");
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assert_se(d);
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FOREACH_DIRENT(de, d, break) {
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_cleanup_free_ char *path = NULL, *path_shifted = NULL, *session = NULL, *unit = NULL, *user_unit = NULL, *machine = NULL, *prefix = NULL;
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pid_t pid;
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uid_t uid = (uid_t) -1;
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if (de->d_type != DT_DIR &&
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de->d_type != DT_UNKNOWN)
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continue;
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r = parse_pid(de->d_name, &pid);
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if (r < 0)
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continue;
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if (is_kernel_thread(pid))
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continue;
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cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &path);
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cg_pid_get_path_shifted(pid, &prefix, &path_shifted);
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cg_pid_get_owner_uid(pid, &uid);
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cg_pid_get_session(pid, &session);
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cg_pid_get_unit(pid, &unit);
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cg_pid_get_user_unit(pid, &user_unit);
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cg_pid_get_machine_name(pid, &machine);
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printf("%lu\t%s\t%s\t%s\t%lu\t%s\t%s\t%s\t%s\n",
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(unsigned long) pid,
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path,
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prefix,
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path_shifted,
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(unsigned long) uid,
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session,
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unit,
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user_unit,
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machine);
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}
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}
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static void test_escape_one(const char *s, const char *r) {
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_cleanup_free_ char *b;
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b = cg_escape(s);
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assert_se(b);
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assert_se(streq(b, r));
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assert_se(streq(cg_unescape(b), s));
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}
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static void test_escape(void) {
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test_escape_one("foobar", "foobar");
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test_escape_one("foobar.service", "foobar.service");
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test_escape_one("cgroup.service", "_cgroup.service");
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test_escape_one("cpu.service", "_cpu.service");
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test_escape_one("tasks", "_tasks");
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test_escape_one("_foobar", "__foobar");
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}
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int main(void) {
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test_path_decode_unit();
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test_path_get_unit();
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test_path_get_user_unit();
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test_get_paths();
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test_proc();
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test_escape();
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return 0;
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}
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