Historically, <asm/socket.h> (which is included from <bits/socket.h>) provided ioctl operations for sockets. User code accessed them through <sys/socket.h>. The kernel UAPI headers have removed these definitions in favor of <linux/sockios.h>. This commit makes them available via <sys/socket.h> again. [[[ This is related to this thread: From: Sergei Trofimovich <slyfox@xxxxxxxxxx> Subject: linux-headers-5.2 and proper use of SIOCGSTAMP To: netdev@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, libc-alpha@xxxxxxxxxxxxxx Cc: Arnd Bergmann <arnd@xxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, mtk.manpages@xxxxxxxxx, linux-man@xxxxxxxxxxxxxxx Date: Sat, 20 Jul 2019 17:48:44 +0100 (1 day, 18 hours, 40 minutes ago) Message-ID: <20190720174844.4b989d34@sf> I have tried to verify this against our 3.10 kernel headers and the 5.2 headers, and I do not see any failures in glibc itself (the latter with build-many-glibcs.py). Impact on application code is unclear at this point, of course. This patch depends on the earlier Linux 5.2 compatibility patch which introduced <bits/socket-constants.h>. ]]] 2019-07-22 Florian Weimer <fweimer@xxxxxxxxxx> * sysdeps/unix/sysv/linux/bits/socket.h [__USE_MISC]: Include <linux/sockios.h>. diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h index 082f8b9031..ff5b705f41 100644 --- a/sysdeps/unix/sysv/linux/bits/socket.h +++ b/sysdeps/unix/sysv/linux/bits/socket.h @@ -352,6 +352,7 @@ struct ucred #ifdef __USE_MISC # include <bits/types/time_t.h> # include <asm/socket.h> +# include <linux/sockios.h> #else # define SO_DEBUG 1 # include <bits/socket-constants.h>