signal.h: add new sa_flags from linux v5.11
[musl.git] / src / network / sockatmark.c
blobf474551aafe44b15eb90fd19b37fef5696d6a3a1
1 #include <sys/socket.h>
2 #include <sys/ioctl.h>
4 int sockatmark(int s)
6 int ret;
7 if (ioctl(s, SIOCATMARK, &ret) < 0)
8 return -1;
9 return ret;