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/* 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;
}
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