src/test/test-cgroup-util.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2013 Zbigniew Jędrzejewski-Szmek
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <assert.h>
  23
  24 #include "util.h"
  25 #include "cgroup-util.h"
  26
  27 static void check_p_d_u(const char *path, int code, const char *result) {
  28         _cleanup_free_ char *unit = NULL;
  29
  30         assert_se(cg_path_decode_unit(path, &unit) == code);
  31         assert_se(streq_ptr(unit, result));
  32 }
  33
  34 static void test_path_decode_unit(void) {
  35         check_p_d_u("getty@.service/tty2", 0, "getty@tty2.service");
  36         check_p_d_u("getty@.service/tty2/xxx", 0, "getty@tty2.service");
  37         check_p_d_u("getty@.service/", -EINVAL, NULL);
  38         check_p_d_u("getty@.service", -EINVAL, NULL);
  39         check_p_d_u("getty.service", 0, "getty.service");
  40         check_p_d_u("getty", -EINVAL, NULL);
  41 }
  42
  43 static void check_p_g_u(const char *path, int code, const char *result) {
  44         _cleanup_free_ char *unit = NULL;
  45
  46         assert_se(cg_path_get_unit(path, &unit) == code);
  47         assert_se(streq_ptr(unit, result));
  48 }
  49
  50 static void check_p_g_u_u(const char *path, int code, const char *result) {
  51         _cleanup_free_ char *unit = NULL;
  52
  53         assert_se(cg_path_get_user_unit(path, &unit) == code);
  54         assert_se(streq_ptr(unit, result));
  55 }
  56
  57 static void test_path_get_unit(void) {
  58         check_p_g_u("/system/foobar.service/sdfdsaf", 0, "foobar.service");
  59         check_p_g_u("/system/getty@.service/tty5", 0, "getty@tty5.service");
  60         check_p_g_u("/system/getty@.service/tty5/aaa/bbb", 0, "getty@tty5.service");
  61         check_p_g_u("/system/getty@.service/tty5/", 0, "getty@tty5.service");
  62         check_p_g_u("/system/getty@tty6.service/tty5", 0, "getty@tty6.service");
  63         check_p_g_u("sadfdsafsda", -ENOENT, NULL);
  64         check_p_g_u("/system/getty####@tty6.service/tty5", -EINVAL, NULL);
  65 }
  66
  67 static void test_path_get_user_unit(void) {
  68         check_p_g_u_u("/user/lennart/2/systemd-21548/foobar.service", 0, "foobar.service");
  69         check_p_g_u_u("/user/lennart/2/systemd-21548/foobar.service/waldo", 0, "foobar.service");
  70         check_p_g_u_u("/user/lennart/2/systemd-21548/foobar.service/waldo/uuuux", 0, "foobar.service");
  71         check_p_g_u_u("/user/lennart/2/systemd-21548/waldo/waldo/uuuux", -EINVAL, NULL);
  72         check_p_g_u_u("/user/lennart/2/foobar.service", -ENOENT, NULL);
  73         check_p_g_u_u("/user/lennart/2/systemd-21548/foobar@.service/pie/pa/po", 0, "foobar@pie.service");
  74 }
  75
  76 static void test_get_paths(void) {
  77         _cleanup_free_ char *a = NULL, *b = NULL, *c = NULL, *d = NULL;
  78
  79         assert_se(cg_get_root_path(&a) >= 0);
  80         log_info("Root = %s", a);
  81
  82         assert_se(cg_get_system_path(&b) >= 0);
  83         log_info("System = %s", b);
  84
  85         assert_se(cg_get_user_path(&c) >= 0);
  86         log_info("User = %s", c);
  87
  88         assert_se(cg_get_machine_path(&d) >= 0);
  89         log_info("Machine = %s", d);
  90 }
  91
  92 static void test_proc(void) {
  93         _cleanup_closedir_ DIR *d = NULL;
  94         struct dirent *de;
  95         int r;
  96
  97         d = opendir("/proc");
  98         assert_se(d);
  99
 100         FOREACH_DIRENT(de, d, break) {
 101                 _cleanup_free_ char *path = NULL, *path_shifted = NULL, *session = NULL, *unit = NULL, *user_unit = NULL, *machine = NULL, *prefix = NULL;
 102                 pid_t pid;
 103
 104                 if (de->d_type != DT_DIR &&
 105                     de->d_type != DT_UNKNOWN)
 106                         continue;
 107
 108                 r = parse_pid(de->d_name, &pid);
 109                 if (r < 0)
 110                         continue;
 111
 112                 cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &path);
 113                 cg_pid_get_path_shifted(pid, &prefix, &path_shifted);
 114                 cg_pid_get_session(pid, &session);
 115                 cg_pid_get_unit(pid, &unit);
 116                 cg_pid_get_user_unit(pid, &user_unit);
 117                 cg_pid_get_machine_name(pid, &machine);
 118
 119                 printf("%lu\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",
 120                        (unsigned long) pid,
 121                        path,
 122                        prefix,
 123                        path_shifted,
 124                        session,
 125                        unit,
 126                        user_unit,
 127                        machine);
 128         }
 129 }
 130
 131 int main(void) {
 132         test_path_decode_unit();
 133         test_path_get_unit();
 134         test_path_get_user_unit();
 135         test_get_paths();
 136         test_proc();
 137
 138         return 0;
 139 }