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linux: Add generic ioctl implementation

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The powerpc is refactor to use the default implementation.
This commit is contained in:
Adhemerval Zanella 2021-11-19 16:58:52 -03:00
parent 00baddbb93
commit a329f68f2e
3 changed files with 85 additions and 31 deletions
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25
sysdeps/unix/sysv/linux/internal-ioctl.h Normal file
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@ -0,0 +1,25 @@
/* Linux internal definitions for ioctl.
Copyright (C) 2021 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
<https://www.gnu.org/licenses/>. */
/* Architecture ports may choose to override this default implementation
to provide architecture specific ioctl support. */
static inline bool
__ioctl_arch (int *r, int fd, unsigned long request, void *arg)
{
return false;
}

49
sysdeps/unix/sysv/linux/ioctl.c Normal file
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@ -0,0 +1,49 @@
/* Control device. Linux generic implementation.
Copyright (C) 2021 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
<https://www.gnu.org/licenses/>. */
#include <stdarg.h>
#include <sys/ioctl.h>
#include <sysdep.h>
#include <internal-ioctl.h>
int
__ioctl (int fd, unsigned long int request, ...)
{
va_list args;
va_start (args, request);
void *arg = va_arg (args, void *);
va_end (args);
int r;
if (!__ioctl_arch (&r, fd, request, arg))
{
r = INTERNAL_SYSCALL_CALL (ioctl, fd, request, arg);
if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (r)))
{
__set_errno (-r);
return -1;
}
}
return r;
}
libc_hidden_def (__ioctl)
weak_alias (__ioctl, ioctl)
#if __TIMESIZE != 64
strong_alias (__ioctl, __ioctl_time64)
#endif

42
sysdeps/unix/sysv/linux/powerpc/ioctl.c → sysdeps/unix/sysv/linux/powerpc/internal-ioctl.h
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@ -1,4 +1,5 @@
/* Copyright (C) 1998-2021 Free Software Foundation, Inc.
/* Linux internal definitions for ioctl.
Copyright (C) 2021 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
@ -12,57 +13,36 @@
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
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
#include <stdarg.h>
#include <termios.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sysdep.h>
/* The user-visible size of struct termios has changed. Catch ioctl calls
using the new-style struct termios, and translate them to old-style. */
int
__ioctl (int fd, unsigned long int request, ...)
static inline bool
__ioctl_arch (int *r, int fd, unsigned long request, void *arg)
{
void *arg;
va_list ap;
int result;
va_start (ap, request);
arg = va_arg (ap, void *);
switch (request)
{
case TCGETS:
result = __tcgetattr (fd, (struct termios *) arg);
*r = __tcgetattr (fd, (struct termios *) arg);
break;
case TCSETS:
result = __tcsetattr (fd, TCSANOW, (struct termios *) arg);
*r = __tcsetattr (fd, TCSANOW, (struct termios *) arg);
break;
case TCSETSW:
result = __tcsetattr (fd, TCSADRAIN, (struct termios *) arg);
*r = __tcsetattr (fd, TCSADRAIN, (struct termios *) arg);
break;
case TCSETSF:
result = __tcsetattr (fd, TCSAFLUSH, (struct termios *) arg);
*r = __tcsetattr (fd, TCSAFLUSH, (struct termios *) arg);
break;
default:
result = INLINE_SYSCALL (ioctl, 3, fd, request, arg);
break;
return false;
}
va_end (ap);
return result;
return true;
}
libc_hidden_def (__ioctl)
weak_alias (__ioctl, ioctl)
#if __TIMESIZE != 64
weak_alias (__ioctl, __ioctl_time64)
#endif