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 #include "test-helper.h"
  27
  28 static void check_p_d_u(const char *path, int code, const char *result) {
  29         _cleanup_free_ char *unit = NULL;
  30
  31         assert_se(cg_path_decode_unit(path, &unit) == code);
  32         assert_se(streq_ptr(unit, result));
  33 }
  34
  35 static void test_path_decode_unit(void) {
  36         check_p_d_u("getty@tty2.service", 0, "getty@tty2.service");
  37         check_p_d_u("getty@tty2.service/", 0, "getty@tty2.service");
  38         check_p_d_u("getty@tty2.service/xxx", 0, "getty@tty2.service");
  39         check_p_d_u("getty@.service/", -EINVAL, NULL);
  40         check_p_d_u("getty@.service", -EINVAL, NULL);
  41         check_p_d_u("getty.service", 0, "getty.service");
  42         check_p_d_u("getty", -EINVAL, NULL);
  43         check_p_d_u("getty/waldo", -EINVAL, NULL);
  44         check_p_d_u("_cpu.service", 0, "cpu.service");
  45 }
  46
  47 static void check_p_g_u(const char *path, int code, const char *result) {
  48         _cleanup_free_ char *unit = NULL;
  49
  50         assert_se(cg_path_get_unit(path, &unit) == code);
  51         assert_se(streq_ptr(unit, result));
  52 }
  53
  54 static void test_path_get_unit(void) {
  55         check_p_g_u("/system.slice/foobar.service/sdfdsaf", 0, "foobar.service");
  56         check_p_g_u("/system.slice/getty@tty5.service", 0, "getty@tty5.service");
  57         check_p_g_u("/system.slice/getty@tty5.service/aaa/bbb", 0, "getty@tty5.service");
  58         check_p_g_u("/system.slice/getty@tty5.service/", 0, "getty@tty5.service");
  59         check_p_g_u("/system.slice/getty@tty6.service/tty5", 0, "getty@tty6.service");
  60         check_p_g_u("sadfdsafsda", -EINVAL, NULL);
  61         check_p_g_u("/system.slice/getty####@tty6.service/xxx", -EINVAL, NULL);
  62         check_p_g_u("/system.slice/system-waldo.slice/foobar.service/sdfdsaf", 0, "foobar.service");
  63         check_p_g_u("/system.slice/system-waldo.slice/_cpu.service/sdfdsaf", 0, "cpu.service");
  64 }
  65
  66 static void check_p_g_u_u(const char *path, int code, const char *result) {
  67         _cleanup_free_ char *unit = NULL;
  68
  69         assert_se(cg_path_get_user_unit(path, &unit) == code);
  70         assert_se(streq_ptr(unit, result));
  71 }
  72
  73 static void test_path_get_user_unit(void) {
  74         check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/foobar.service", 0, "foobar.service");
  75         check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/waldo.slice/foobar.service", 0, "foobar.service");
  76         check_p_g_u_u("/user.slice/user-1002.slice/session-2.scope/foobar.service/waldo", 0, "foobar.service");
  77         check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/foobar.service/waldo/uuuux", 0, "foobar.service");
  78         check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/waldo/waldo/uuuux", -EINVAL, NULL);
  79         check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/foobar@pie.service/pa/po", 0, "foobar@pie.service");
  80         check_p_g_u_u("/session-2.scope/foobar@pie.service/pa/po", 0, "foobar@pie.service");
  81         check_p_g_u_u("/xyz.slice/xyz-waldo.slice/session-77.scope/foobar@pie.service/pa/po", 0, "foobar@pie.service");
  82         check_p_g_u_u("/meh.service", -ENOENT, NULL);
  83         check_p_g_u_u("/session-3.scope/_cpu.service", 0, "cpu.service");
  84 }
  85
  86 static void check_p_g_s(const char *path, int code, const char *result) {
  87         _cleanup_free_ char *s = NULL;
  88
  89         assert_se(cg_path_get_session(path, &s) == code);
  90         assert_se(streq_ptr(s, result));
  91 }
  92
  93 static void test_path_get_session(void) {
  94         check_p_g_s("/user.slice/user-1000.slice/session-2.scope/foobar.service", 0, "2");
  95         check_p_g_s("/session-3.scope", 0, "3");
  96         check_p_g_s("", -ENOENT, 0);
  97 }
  98
  99 static void check_p_g_o_u(const char *path, int code, uid_t result) {
 100         uid_t uid = 0;
 101
 102         assert_se(cg_path_get_owner_uid(path, &uid) == code);
 103         assert_se(uid == result);
 104 }
 105
 106 static void test_path_get_owner_uid(void) {
 107         check_p_g_o_u("/user.slice/user-1000.slice/session-2.scope/foobar.service", 0, 1000);
 108         check_p_g_o_u("/user.slice/user-1006.slice", 0, 1006);
 109         check_p_g_o_u("", -ENOENT, 0);
 110 }
 111
 112 static void check_p_g_m_n(const char *path, int code, const char *result) {
 113         _cleanup_free_ char *m = NULL;
 114
 115         assert_se(cg_path_get_machine_name(path, &m) == code);
 116         assert_se(streq_ptr(m, result));
 117 }
 118
 119 static void test_path_get_machine_name(void) {
 120         check_p_g_m_n("/user.slice/machine-foobar.scope", 0, "foobar");
 121         check_p_g_m_n("/machine-foobar.scope", 0, "foobar");
 122         check_p_g_m_n("/user.slice/user-kuux.slice/machine-foobar.scope", 0, "foobar");
 123         check_p_g_m_n("/user.slice/user-kuux.slice/machine-foobar.scope/asjhdkj", 0, "foobar");
 124         check_p_g_m_n("", -ENOENT, NULL);
 125 }
 126
 127 static void test_get_paths(void) {
 128         _cleanup_free_ char *a = NULL;
 129
 130         assert_se(cg_get_root_path(&a) >= 0);
 131         log_info("Root = %s", a);
 132 }
 133
 134 static void test_proc(void) {
 135         _cleanup_closedir_ DIR *d = NULL;
 136         struct dirent *de;
 137         int r;
 138
 139         d = opendir("/proc");
 140         assert_se(d);
 141
 142         FOREACH_DIRENT(de, d, break) {
 143                 _cleanup_free_ char *path = NULL, *path_shifted = NULL, *session = NULL, *unit = NULL, *user_unit = NULL, *machine = NULL, *prefix = NULL, *slice = NULL;
 144                 pid_t pid;
 145                 uid_t uid = (uid_t) -1;
 146
 147                 if (de->d_type != DT_DIR &&
 148                     de->d_type != DT_UNKNOWN)
 149                         continue;
 150
 151                 r = parse_pid(de->d_name, &pid);
 152                 if (r < 0)
 153                         continue;
 154
 155                 if (is_kernel_thread(pid))
 156                         continue;
 157
 158                 cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &path);
 159                 cg_pid_get_path_shifted(pid, &prefix, &path_shifted);
 160                 cg_pid_get_owner_uid(pid, &uid);
 161                 cg_pid_get_session(pid, &session);
 162                 cg_pid_get_unit(pid, &unit);
 163                 cg_pid_get_user_unit(pid, &user_unit);
 164                 cg_pid_get_machine_name(pid, &machine);
 165                 cg_pid_get_slice(pid, &slice);
 166
 167                 printf("%lu\t%s\t%s\t%s\t%lu\t%s\t%s\t%s\t%s\t%s\n",
 168                        (unsigned long) pid,
 169                        path,
 170                        prefix,
 171                        path_shifted,
 172                        (unsigned long) uid,
 173                        session,
 174                        unit,
 175                        user_unit,
 176                        machine,
 177                        slice);
 178         }
 179 }
 180
 181 static void test_escape_one(const char *s, const char *r) {
 182         _cleanup_free_ char *b;
 183
 184         b = cg_escape(s);
 185         assert_se(b);
 186         assert_se(streq(b, r));
 187
 188         assert_se(streq(cg_unescape(b), s));
 189 }
 190
 191 static void test_escape(void) {
 192         test_escape_one("foobar", "foobar");
 193         test_escape_one(".foobar", "_.foobar");
 194         test_escape_one("foobar.service", "foobar.service");
 195         test_escape_one("cgroup.service", "_cgroup.service");
 196         test_escape_one("tasks", "_tasks");
 197         if (access("/sys/fs/cgroup/cpu", F_OK) == 0)
 198                 test_escape_one("cpu.service", "_cpu.service");
 199         test_escape_one("_foobar", "__foobar");
 200         test_escape_one("", "_");
 201         test_escape_one("_", "__");
 202         test_escape_one(".", "_.");
 203 }
 204
 205 static void test_controller_is_valid(void) {
 206         assert_se(cg_controller_is_valid("foobar", false));
 207         assert_se(cg_controller_is_valid("foo_bar", false));
 208         assert_se(cg_controller_is_valid("name=foo", true));
 209         assert_se(!cg_controller_is_valid("", false));
 210         assert_se(!cg_controller_is_valid("name=", true));
 211         assert_se(!cg_controller_is_valid("=", false));
 212         assert_se(!cg_controller_is_valid("cpu,cpuacct", false));
 213         assert_se(!cg_controller_is_valid("_", false));
 214         assert_se(!cg_controller_is_valid("_foobar", false));
 215         assert_se(!cg_controller_is_valid("tatü", false));
 216 }
 217
 218 static void test_slice_to_path_one(const char *unit, const char *path, int error) {
 219         _cleanup_free_ char *ret = NULL;
 220
 221         assert_se(cg_slice_to_path(unit, &ret) == error);
 222         assert_se(streq_ptr(ret, path));
 223 }
 224
 225 static void test_slice_to_path(void) {
 226
 227         test_slice_to_path_one("foobar.slice", "foobar.slice", 0);
 228         test_slice_to_path_one("foobar-waldo.slice", "foobar.slice/foobar-waldo.slice", 0);
 229         test_slice_to_path_one("foobar-waldo.service", NULL, -EINVAL);
 230         test_slice_to_path_one("-.slice", NULL, -EINVAL);
 231         test_slice_to_path_one("-foo-.slice", NULL, -EINVAL);
 232         test_slice_to_path_one("-foo.slice", NULL, -EINVAL);
 233         test_slice_to_path_one("a-b.slice", "a.slice/a-b.slice", 0);
 234         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);
 235 }
 236
 237 int main(void) {
 238         test_path_decode_unit();
 239         test_path_get_unit();
 240         test_path_get_user_unit();
 241         test_path_get_session();
 242         test_path_get_owner_uid();
 243         test_path_get_machine_name();
 244         TEST_REQ_RUNNING_SYSTEMD(test_get_paths());
 245         test_proc();
 246         TEST_REQ_RUNNING_SYSTEMD(test_escape());
 247         test_controller_is_valid();
 248         test_slice_to_path();
 249
 250         return 0;
 251 }