src/libudev/test-udev-device-thread.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <pthread.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7
   8 #include "libudev.h"
   9 #include "tests.h"
  10
  11 #define handle_error_errno(error, msg)                          \
  12         ({                                                      \
  13                 errno = abs(error);                             \
  14                 perror(msg);                                    \
  15                 EXIT_FAILURE;                                   \
  16         })
  17
  18 static void* thread(void *p) {
  19         struct udev_device **d = p;
  20
  21         *d = udev_device_unref(*d);
  22
  23         return NULL;
  24 }
  25
  26 int main(int argc, char *argv[]) {
  27         struct udev_device *loopback;
  28         struct udev_list_entry *entry, *e;
  29         pthread_t t;
  30         int r;
  31
  32         loopback = udev_device_new_from_syspath(NULL, "/sys/class/net/lo");
  33         if (!loopback) {
  34                 if (errno == ENODEV)
  35                         return log_tests_skipped_errno(errno, "Loopback device not found");
  36
  37                 return handle_error_errno(errno, "Failed to create loopback device object");
  38         }
  39
  40         entry = udev_device_get_properties_list_entry(loopback);
  41         udev_list_entry_foreach(e, entry)
  42                 printf("%s=%s\n", udev_list_entry_get_name(e), udev_list_entry_get_value(e));
  43
  44         r = pthread_create(&t, NULL, thread, &loopback);
  45         if (r != 0)
  46                 return handle_error_errno(r, "Failed to create thread");
  47
  48         r = pthread_join(t, NULL);
  49         if (r != 0)
  50                 return handle_error_errno(r, "Failed to wait thread finished");
  51
  52         if (loopback)
  53                 return handle_error_errno(r, "loopback device is not unref()ed");
  54
  55         return 0;
  56 }