Add recvmmsg interface.

5 files changed, 41 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index 1f4d2b2723..59e4b19241 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2009-12-08  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/unix/sysv/linux/bits/socket.h: Define mmsghdr and declare
+	recvmmsg.
+	* sysdeps/unix/sysv/linux/syscalls.list: Add entry for recvmmsg.
+	* sysdeps/unix/sysv/linux/Versions: Add recvmmsg for GLIBC_2.12.
+
 2009-12-04  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
 
 	* sysdeps/s390/s390-64/dl-trampoline.S: Add CFI for the call saved
diff --git a/NEWS b/NEWS
index db51d5fe94..e1fb6a5766 100644
--- a/NEWS
+++ b/NEWS
@@ -1,10 +1,15 @@
-GNU C Library NEWS -- history of user-visible changes.  2009-10-30
+GNU C Library NEWS -- history of user-visible changes.  2009-12-8
 Copyright (C) 1992-2008, 2009 Free Software Foundation, Inc.
 See the end for copying conditions.
 
 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
 using `glibc' in the "product" field.
 
+Version 2.12
+
+* New Linux interface: recvmmsg
+
+
 Version 2.11
 
 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
index 50c70513ff..f09ef6d983 100644
--- a/sysdeps/unix/sysv/linux/Versions
+++ b/sysdeps/unix/sysv/linux/Versions
@@ -146,6 +146,8 @@ libc {
     _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
 
     ntp_gettimex;
+
+    recvmmsg;
   }
   GLIBC_PRIVATE {
     # functions used in other libraries
diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index f23b338a35..aa78087a72 100644
--- a/sysdeps/unix/sysv/linux/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/bits/socket.h
@@ -234,8 +234,8 @@ enum
 #define	MSG_MORE	MSG_MORE
 
     MSG_CMSG_CLOEXEC	= 0x40000000	/* Set close_on_exit for file
-                                           descriptor received through
-                                           SCM_RIGHTS.  */
+					   descriptor received through
+					   SCM_RIGHTS.  */
 #define MSG_CMSG_CLOEXEC MSG_CMSG_CLOEXEC
   };
 
@@ -259,6 +259,15 @@ struct msghdr
     int msg_flags;		/* Flags on received message.  */
   };
 
+#ifdef __USE_GNU
+/* For `recvmmsg'.  */
+struct mmsghdr
+  {
+    struct msghdr msg_hdr;	/* Actual message header.  */
+    unsigned int msg_len;	/* Number of received bytes for the entry.  */
+  };
+#endif
+
 /* Structure used for storage of ancillary data object information.  */
 struct cmsghdr
   {
@@ -403,4 +412,18 @@ struct linger
     int l_linger;		/* Time to linger.  */
   };
 
+
+__BEGIN_DECLS
+
+/* Receive a message as described by MESSAGE from socket FD.
+   Returns the number of bytes read or -1 for errors.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int recvmmsg (int __fd, struct mmsghdr *__vmessages,
+		     unsigned int __vlen, int __flags,
+		     __const struct timespec *__tmo);
+
+__END_DECLS
+
 #endif	/* bits/socket.h */
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index a87906a4e3..a1a449eb4b 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -53,6 +53,7 @@ prctl		EXTRA	prctl		i:iiiii	__prctl		prctl
 putpmsg		-	putpmsg		i:ippii	putpmsg
 query_module	EXTRA	query_module	i:sipip	query_module
 quotactl	EXTRA	quotactl	i:isip	quotactl
+recvmmsg	EXTRA	recvmmsg	Ci:ipiip	recvmmsg
 remap_file_pages -	remap_file_pages i:piiii	__remap_file_pages remap_file_pages
 sched_getp	-	sched_getparam	i:ip	__sched_getparam	sched_getparam
 sched_gets	-	sched_getscheduler	i:i	__sched_getscheduler	sched_getscheduler