[PATCH 07/16] Linux: Consolidate xmknod
Lukasz Majewski
lukma@denx.de
Fri Jul 24 09:14:49 GMT 2020
On Thu, 23 Jul 2020 16:46:32 -0300
Adhemerval Zanella <adhemerval.zanella@linaro.org> wrote:
> The __NR_mknodat syscall is supported on all kernels, so the generic
> implementation is used as default.
>
> Checked on x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
> ---
> sysdeps/unix/sysv/linux/generic/xmknod.c | 54
> ------------------------ sysdeps/unix/sysv/linux/xmknod.c |
> 8 ++-- 2 files changed, 3 insertions(+), 59 deletions(-)
> delete mode 100644 sysdeps/unix/sysv/linux/generic/xmknod.c
>
> diff --git a/sysdeps/unix/sysv/linux/generic/xmknod.c
> b/sysdeps/unix/sysv/linux/generic/xmknod.c deleted file mode 100644
> index a51fcbee22..0000000000
> --- a/sysdeps/unix/sysv/linux/generic/xmknod.c
> +++ /dev/null
> @@ -1,54 +0,0 @@
> -/* Copyright (C) 2011-2020 Free Software Foundation, Inc.
> - This file is part of the GNU C Library.
> - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
> -
> - 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
> - <https://www.gnu.org/licenses/>. */
> -
> -#include <errno.h>
> -#include <fcntl.h>
> -#include <sys/types.h>
> -#include <sys/stat.h>
> -#include <sys/sysmacros.h>
> -
> -#include <sysdep.h>
> -#include <sys/syscall.h>
> -
> -/* Create a device file named PATH, with permission and special bits
> MODE
> - and device number DEV (which can be constructed from major and
> minor
> - device numbers with the `makedev' macro above). */
> -int
> -__xmknod (int vers, const char *path, mode_t mode, dev_t *dev)
> -{
> - unsigned long long int k_dev;
> -
> - if (vers != _MKNOD_VER)
> - {
> - __set_errno (EINVAL);
> - return -1;
> - }
> -
> - /* We must convert the value to dev_t type used by the kernel. */
> - k_dev = (*dev) & ((1ULL << 32) - 1);
> - if (k_dev != *dev)
> - {
> - __set_errno (EINVAL);
> - return -1;
> - }
> -
> - return INLINE_SYSCALL (mknodat, 4, AT_FDCWD, path, mode,
> - (unsigned int) k_dev);
> -}
> -weak_alias (__xmknod, _xmknod)
> -libc_hidden_def (__xmknod)
> diff --git a/sysdeps/unix/sysv/linux/xmknod.c
> b/sysdeps/unix/sysv/linux/xmknod.c index 5d0ae97c34..42809d4c57 100644
> --- a/sysdeps/unix/sysv/linux/xmknod.c
> +++ b/sysdeps/unix/sysv/linux/xmknod.c
> @@ -16,13 +16,10 @@
> License along with the GNU C Library; if not, see
> <https://www.gnu.org/licenses/>. */
>
> -#include <errno.h>
> -#include <sys/types.h>
> #include <sys/stat.h>
> #include <sys/sysmacros.h>
> -
> +#include <fcntl.h>
> #include <sysdep.h>
> -#include <sys/syscall.h>
>
> /* Create a device file named PATH, with permission and special bits
> MODE and device number DEV (which can be constructed from major and
> minor @@ -40,7 +37,8 @@ __xmknod (int vers, const char *path, mode_t
> mode, dev_t *dev) if (k_dev != *dev)
> return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
>
> - return INLINE_SYSCALL (mknod, 3, path, mode, (unsigned int) k_dev);
> + return INLINE_SYSCALL_CALL (mknodat, AT_FDCWD, path, mode,
> + (unsigned int) k_dev);
> }
>
> weak_alias (__xmknod, _xmknod)
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 488 bytes
Desc: OpenPGP digital signature
URL: <https://sourceware.org/pipermail/libc-alpha/attachments/20200724/6909c464/attachment.sig>
More information about the Libc-alpha
mailing list