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016495b818
this patch calls direct system calls for socket operations in the same way as power does. The system calls were introduced in kernel commit https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=977108f89c989b1eeb5c8d938e1e71913391eb5f. There are no direct recv, send, accept syscalls available on s390. Thus recvfrom, sendto, accept4 are called instead of the socketcall by defining __ASSUME_*_FOR_*_SYSCALL macros. See recv.c, send.c, accept.c in sysdeps/unix/sysv/linux/ folder. The socketcalls in syscalls.list for s390-64 are removed. They were never used on s390x. ChangeLog: * sysdeps/unix/sysv/linux/s390/kernel-features.h: (__ASSUME_*_SYSCALL) Define new macros. * sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list: Remove socketcall syscalls. * sysdeps/unix/sysv/linux/accept.c (__libc_accept): Use accept4 if defined __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL. * sysdeps/unix/sysv/linux/recv.c (__libc_recv): Use recvfrom if defined __ASSUME_RECVFROM_FOR_RECV_SYSCALL. * sysdeps/unix/sysv/linux/send.c (__libc_send): Use sendto if defined __ASSUME_SENDTO_FOR_SEND_SYSCALL.
48 lines
2.0 KiB
C
48 lines
2.0 KiB
C
/* Set flags signalling availability of kernel features based on given
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kernel version number. S/390 version.
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Copyright (C) 1999-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* S/390 uses socketcall. */
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#define __ASSUME_SOCKETCALL 1
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/* Direct socketcalls available with kernel 4.3. */
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#if __LINUX_KERNEL_VERSION >= 0x040300
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# define __ASSUME_RECVMMSG_SYSCALL 1
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# define __ASSUME_SENDMMSG_SYSCALL 1
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# define __ASSUME_SOCKET_SYSCALL 1
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# define __ASSUME_SOCKETPAIR_SYSCALL 1
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# define __ASSUME_BIND_SYSCALL 1
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# define __ASSUME_CONNECT_SYSCALL 1
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# define __ASSUME_LISTEN_SYSCALL 1
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# define __ASSUME_ACCEPT4_SYSCALL 1
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# define __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL 1
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# define __ASSUME_GETSOCKOPT_SYSCALL 1
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# define __ASSUME_SETSOCKOPT_SYSCALL 1
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# define __ASSUME_GETSOCKNAME_SYSCALL 1
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# define __ASSUME_GETPEERNAME_SYSCALL 1
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# define __ASSUME_SENDTO_SYSCALL 1
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# define __ASSUME_SENDTO_FOR_SEND_SYSCALL 1
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# define __ASSUME_SENDMSG_SYSCALL 1
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# define __ASSUME_RECVFROM_SYSCALL 1
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# define __ASSUME_RECVFROM_FOR_RECV_SYSCALL 1
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# define __ASSUME_RECVMSG_SYSCALL 1
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# define __ASSUME_SHUTDOWN_SYSCALL 1
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#endif
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#include_next <kernel-features.h>
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