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Subject[PATCH glibc] Linux: Include <linux/sockios.h> in <bits/socket.h> under __USE_MISC
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 <>
Subject: linux-headers-5.2 and proper use of SIOCGSTAMP
Cc: Arnd Bergmann <>, "David S. Miller" <>,,
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 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 <>

* sysdeps/unix/sysv/linux/bits/socket.h [__USE_MISC]: Include

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>
# define SO_DEBUG 1
# include <bits/socket-constants.h>
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