@@ -16,33 +16,26 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <errno.h>
#include <sys/msg.h>
#include <ipc_priv.h>
-
#include <sysdep-cancel.h>
-#include <sys/syscall.h>
-
-/* Kludge to work around Linux' restriction of only up to five
- arguments to a system call. */
-struct ipc_kludge
- {
- void *msgp;
- long int msgtyp;
- };
-
ssize_t
__libc_msgrcv (int msqid, void *msgp, size_t msgsz, long int msgtyp,
int msgflg)
{
+#ifdef __ASSUME_SYSVIPC_SYSCALL
+ return SYSCALL_CANCEL (msgrc, msqid, msgp, msgsz, msgtyp, msgflg);
+#else
/* The problem here is that Linux' calling convention only allows up to
fives parameters to a system call. */
- struct ipc_kludge tmp;
-
- tmp.msgp = msgp;
- tmp.msgtyp = msgtyp;
+ struct
+ {
+ void *msgp;
+ long int msgtyp;
+ } tmp = { msgp, msgtyp };
return SYSCALL_CANCEL (ipc, IPCOP_msgrcv, msqid, msgsz, msgflg, &tmp);
+#endif
}
weak_alias (__libc_msgrcv, msgrcv)
deleted file mode 100644
@@ -1,32 +0,0 @@
-/* Copyright (C) 2010-2016 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <sys/msg.h>
-#include <ipc_priv.h>
-
-#include <sysdep-cancel.h>
-#include <sys/syscall.h>
-
-ssize_t
-__libc_msgrcv (int msqid, void *msgp, size_t msgsz, long int msgtyp,
- int msgflg)
-{
- return SYSCALL_CANCEL (ipc, IPCOP_msgrcv, msqid, msgsz, msgflg,
- msgp, msgtyp);
-}
-weak_alias (__libc_msgrcv, msgrcv)
Changes from previous version: - Use __ASSUME_SYSVIPC_SYSCALL instead of __NR_syscall to issue the wired syscall or the ipc one. -- This patch consolidates the msgrcv Linux implementation in only one default file, sysdeps/unix/sysv/linux/msgrcv.c. If tries to use the direct syscall if it is supported, otherwise will use the old ipc multiplex mechanism. Checked on x86_64, i686, powerpc64le, aarch64, and armhf. * sysdeps/unix/sysv/linux/msgrcv.c (__libc_msgrcv): Use msgrcv syscall if defined. * sysdeps/unix/sysv/linux/sparc/sparc64/msgrcv.c: Remove file. --- ChangeLog | 4 ++++ sysdeps/unix/sysv/linux/msgrcv.c | 25 ++++++++------------ sysdeps/unix/sysv/linux/sparc/sparc64/msgrcv.c | 32 -------------------------- 3 files changed, 13 insertions(+), 48 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/sparc/sparc64/msgrcv.c