+
+ssize_t print_kmsg(const char *fmt, ...)
+{
+ int fd;
+ va_list ap;
+ char text[1024];
+ ssize_t len;
+ ssize_t ret;
+
+ fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ len = snprintf(text, sizeof(text), "<30>systemd-udevd[%u]: ", getpid());
+
+ va_start(ap, fmt);
+ len += vsnprintf(text + len, sizeof(text) - len, fmt, ap);
+ va_end(ap);
+
+ ret = write(fd, text, len);
+ if (ret < 0)
+ ret = -errno;
+ close(fd);
+ return ret;
+}