| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include <errno.h> |
| #include <pthread.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "sd-device.h" |
| |
| #include "device-util.h" |
| |
| #define handle_error_errno(error, msg) \ |
| ({ \ |
| errno = abs(error); \ |
| perror(msg); \ |
| EXIT_FAILURE; \ |
| }) |
| |
| static void* thread(void *p) { |
| sd_device **d = p; |
| |
| *d = sd_device_unref(*d); |
| |
| return NULL; |
| } |
| |
| int main(int argc, char *argv[]) { |
| sd_device *loopback; |
| pthread_t t; |
| const char *key, *value; |
| int r; |
| |
| r = sd_device_new_from_syspath(&loopback, "/sys/class/net/lo"); |
| if (r < 0) |
| return handle_error_errno(r, "Failed to create loopback device object"); |
| |
| FOREACH_DEVICE_PROPERTY(loopback, key, value) |
| printf("%s=%s\n", key, value); |
| |
| r = pthread_create(&t, NULL, thread, &loopback); |
| if (r != 0) |
| return handle_error_errno(r, "Failed to create thread"); |
| |
| r = pthread_join(t, NULL); |
| if (r != 0) |
| return handle_error_errno(r, "Failed to wait thread finished"); |
| |
| if (loopback) |
| return handle_error_errno(r, "loopback device is not unref()ed"); |
| |
| return 0; |
| } |