From: Carlos O'Donell <carlos@redhat.com>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>,
libc-alpha@sourceware.org
Subject: Re: [PATCH 05/30] Linux: consolidate dup2 implementation
Date: Mon, 5 Dec 2022 11:40:12 -0500 [thread overview]
Message-ID: <4fe0b2b7-9a79-7e6c-fe26-c0a649bc3631@redhat.com> (raw)
In-Reply-To: <20221019221433.1082017-6-adhemerval.zanella@linaro.org>
On 10/19/22 18:14, Adhemerval Zanella via Libc-alpha wrote:
> Use dup2 syscall if defined, otherwise use dup3.
>
> Checked on x86_64-linux-gnu.
LGTM.
No regressions on x86_64 and i686.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
> ---
> sysdeps/unix/sysv/linux/{generic => }/dup2.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
> rename sysdeps/unix/sysv/linux/{generic => }/dup2.c (83%)
>
> diff --git a/sysdeps/unix/sysv/linux/generic/dup2.c b/sysdeps/unix/sysv/linux/dup2.c
> similarity index 83%
> rename from sysdeps/unix/sysv/linux/generic/dup2.c
> rename to sysdeps/unix/sysv/linux/dup2.c
> index 0dc45e9b17..1182780e15 100644
> --- a/sysdeps/unix/sysv/linux/generic/dup2.c
> +++ b/sysdeps/unix/sysv/linux/dup2.c
> @@ -1,4 +1,5 @@
> -/* Copyright (C) 2011-2022 Free Software Foundation, Inc.
> +/* Duplicate a file descriptor. Linux version.
> + Copyright (C) 2011-2022 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
> @@ -24,12 +25,16 @@
> int
> __dup2 (int fd, int fd2)
> {
> +#ifdef __NR_dup2
> + return INLINE_SYSCALL_CALL (dup2, fd, fd2);
OK.
> +#else
> /* For the degenerate case, check if the fd is valid (by trying to
> get the file status flags) and return it, or else return EBADF. */
> if (fd == fd2)
> return __libc_fcntl (fd, F_GETFL, 0) < 0 ? -1 : fd;
>
> - return INLINE_SYSCALL (dup3, 3, fd, fd2, 0);
> + return INLINE_SYSCALL_CALL (dup3, fd, fd2, 0);
OK.
> +#endif
> }
> libc_hidden_def (__dup2)
> weak_alias (__dup2, dup2)
--
Cheers,
Carlos.
next prev parent reply other threads:[~2022-12-05 16:40 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 22:14 [PATCH 00/30] Remove Linux generic sysdep Adhemerval Zanella
2022-10-19 22:14 ` [PATCH 01/30] linux: Fix generic struct_stat for 64 bit time (BZ# 29657) Adhemerval Zanella
2022-10-25 17:50 ` Joseph Myers
2022-12-05 16:39 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 02/30] linux: Consolidate dl-origin.c Adhemerval Zanella
2022-10-19 22:14 ` [PATCH 03/30] Linux: consolidate chmod implementation Adhemerval Zanella
2022-12-05 16:39 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 04/30] Linux: consolidate chown implementation Adhemerval Zanella
2022-12-05 16:40 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 05/30] Linux: consolidate dup2 implementation Adhemerval Zanella
2022-12-05 16:40 ` Carlos O'Donell [this message]
2022-10-19 22:14 ` [PATCH 06/30] Lninux: consolidate epoll_create implementation Adhemerval Zanella
2022-10-21 8:57 ` Florian Weimer
2022-12-05 16:40 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 07/30] Linux: consolidate inotify_init implementation Adhemerval Zanella
2022-12-05 16:40 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 08/30] Linux: consolidate lchown implementation Adhemerval Zanella
2022-12-05 16:40 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 09/30] Linux: consolidate link implementation Adhemerval Zanella
2022-12-05 16:39 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 10/30] Linux: consolidate mkdir implementation Adhemerval Zanella
2022-12-05 16:40 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 11/30] Linux: consolidate readlink implementation Adhemerval Zanella
2022-12-05 16:39 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 12/30] Linux: consolidate rmdir implementation Adhemerval Zanella
2022-12-05 16:39 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 13/30] Linux: consolidate symlink implementation Adhemerval Zanella
2022-12-05 16:40 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 14/30] Linux: consolidate unlink implementation Adhemerval Zanella
2022-12-05 16:40 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 15/30] Linux: consolidate sendfile implementation Adhemerval Zanella
2022-12-05 16:39 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 16/30] Linux: Move wordsize-32 Version to default Adhemerval Zanella
2022-12-05 16:40 ` Carlos O'Donell
2022-12-07 0:10 ` Joseph Myers
2022-12-07 20:19 ` Adhemerval Zanella Netto
2022-10-19 22:14 ` [PATCH 17/30] Linux: consolidate ____longjmp_chk Adhemerval Zanella
2022-12-05 16:40 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 18/30] Linux: Assume and consolidate bind wire-up syscall Adhemerval Zanella
2022-12-05 16:39 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 19/30] Linux: Assume iand consolidate socket " Adhemerval Zanella
2022-12-05 16:39 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 20/30] Linux: Assume and consolidate socketpair " Adhemerval Zanella
2022-12-06 16:15 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 21/30] Linux: Assume and consolidate listen " Adhemerval Zanella
2022-12-06 16:17 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 22/30] Linux: Assume and consolidate getsockname " Adhemerval Zanella
2022-10-20 0:01 ` Joseph Myers
2022-10-20 18:12 ` Adhemerval Zanella Netto
2022-12-06 16:18 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 23/30] Linux: Assume and consolidate getpeername " Adhemerval Zanella
2022-10-20 0:02 ` Joseph Myers
2022-12-06 16:20 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 24/30] Linux: Assume and consolidate shutdown " Adhemerval Zanella
2022-12-06 16:23 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 25/30] Linux: Remove unused generic Makefile Adhemerval Zanella
2022-12-06 17:24 ` Carlos O'Donell
2022-12-07 21:19 ` Adhemerval Zanella Netto
2022-10-19 22:14 ` [PATCH 26/30] Linux: Remove generic sysdep Adhemerval Zanella
2022-12-06 17:29 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 27/30] Linux: make generic xstatver.h the default one Adhemerval Zanella
2022-12-06 17:33 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 28/30] Linux: Make generic fcntl.h " Adhemerval Zanella
2022-12-06 17:36 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 29/30] Linux: Consolidate typesizes.h Adhemerval Zanella
2022-12-06 17:47 ` Carlos O'Donell
2022-10-19 22:14 ` [PATCH 30/30] Linux: Remove generic Implies Adhemerval Zanella
2022-12-06 17:50 ` Carlos O'Donell
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