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26f28fd73d
This patch consolidates the select Linux syscall implementation on
sysdeps/unix/sysv/linux/select.c. The changes are:
1. Remove select from auto-generation syscalls.list on the architecture
that uses __NR_select.
2. Remove generic implementation add a default one that handle all
current cases (with the expection of alpha)
The new default implementation will either use __NR_select if
available of fallback to __NR_pselect6 otherwise.
3. Add a alpha outlier implementation which requires old compatibility
symbols.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* sysdeps/unix/sysv/linux/alpha/Makefile (sysdep_routines): Add
osf_select.
* sysdeps/unix/sysv/linux/alpha/select.c: New file.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove select and
osf_select from auto-generation list.
* sysdeps/unix/sysv/linux/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/generic/select.c: Remove file.
* sysdeps/unix/sysv/linux/select.c: New file.
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/* Linux/alpha select implementation.
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Copyright (C) 2017 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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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/select.h>
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#include <errno.h>
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#include <sysdep-cancel.h>
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#include <shlib-compat.h>
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int
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__new_select (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
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struct timeval *timeout)
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{
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return SYSCALL_CANCEL (select, nfds, readfds, writefds, exceptfds, timeout);
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}
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strong_alias (__new_select, __select)
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libc_hidden_def (__select)
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default_symbol_version (__new_select, select, GLIBC_2.1);
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strong_alias (__new_select, __new_select_private);
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symbol_version (__new_select_private, __select, GLIBC_2.1);
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/* Old timeval32 compat calls. */
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#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
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int
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__select_tv32 (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
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struct timeval *timeout)
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{
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return SYSCALL_CANCEL (osf_select, nfds, readfds, writefds, exceptfds,
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timeout);
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}
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strong_alias (__select_tv32, __select_tv32_1)
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compat_symbol (libc, __select_tv32, __select, GLIBC_2_0);
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compat_symbol (libc, __select_tv32_1, select, GLIBC_2_0);
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#endif
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