root/lib/common/tests/procfs/pcmk__procfs_pid2path_test.c

/* */

DEFINITIONS

1. no_exe_file
2. contents_too_long
3. contents_ok

   1 /*
   2  * Copyright 2022 the Pacemaker project contributors
   3  *
   4  * The version control history for this file may have further details.
   5  *
   6  * This source code is licensed under the GNU General Public License version 2
   7  * or later (GPLv2+) WITHOUT ANY WARRANTY.
   8  */
   9 
  10 #include <crm_internal.h>
  11 
  12 #include <crm/common/unittest_internal.h>
  13 
  14 #include "mock_private.h"
  15 
  16 #include <unistd.h>
  17 #include <string.h>
  18 #include <errno.h>
  19 
  20 static void
  21 no_exe_file(void **state)
     /*  */
  22 {
  23     size_t len = PATH_MAX;
  24     char *path = calloc(len, sizeof(char));
  25 
  26     // Set readlink() errno and link contents
  27     pcmk__mock_readlink = true;
  28 
  29     expect_string(__wrap_readlink, path, "/proc/1000/exe");
  30     expect_value(__wrap_readlink, buf, path);
  31     expect_value(__wrap_readlink, bufsize, len - 1);
  32     will_return(__wrap_readlink, ENOENT);
  33     will_return(__wrap_readlink, NULL);
  34 
  35     assert_int_equal(pcmk__procfs_pid2path(1000, path, len), ENOENT);
  36 
  37     pcmk__mock_readlink = false;
  38 
  39     free(path);
  40 }
  41 
  42 static void
  43 contents_too_long(void **state)
     /*  */
  44 {
  45     size_t len = 10;
  46     char *path = calloc(len, sizeof(char));
  47 
  48     // Set readlink() errno and link contents
  49     pcmk__mock_readlink = true;
  50 
  51     expect_string(__wrap_readlink, path, "/proc/1000/exe");
  52     expect_value(__wrap_readlink, buf, path);
  53     expect_value(__wrap_readlink, bufsize, len - 1);
  54     will_return(__wrap_readlink, 0);
  55     will_return(__wrap_readlink, "/more/than/10/characters");
  56 
  57     assert_int_equal(pcmk__procfs_pid2path(1000, path, len),
  58                      ENAMETOOLONG);
  59 
  60     pcmk__mock_readlink = false;
  61 
  62     free(path);
  63 }
  64 
  65 static void
  66 contents_ok(void **state)
     /*  */
  67 {
  68     size_t len = PATH_MAX;
  69     char *path = calloc(len, sizeof(char));
  70 
  71     // Set readlink() errno and link contents
  72     pcmk__mock_readlink = true;
  73 
  74     expect_string(__wrap_readlink, path, "/proc/1000/exe");
  75     expect_value(__wrap_readlink, buf, path);
  76     expect_value(__wrap_readlink, bufsize, len - 1);
  77     will_return(__wrap_readlink, 0);
  78     will_return(__wrap_readlink, "/ok");
  79 
  80     assert_int_equal(pcmk__procfs_pid2path((pid_t) 1000, path, len),
  81                      pcmk_rc_ok);
  82     assert_string_equal(path, "/ok");
  83 
  84     pcmk__mock_readlink = false;
  85 
  86     free(path);
  87 }
  88 
  89 PCMK__UNIT_TEST(NULL, NULL,
  90                 cmocka_unit_test(no_exe_file),
  91                 cmocka_unit_test(contents_too_long),
  92                 cmocka_unit_test(contents_ok))

/* */