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Add ioctl(2).

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This commit is contained in:
Jonas 'Sortie' Termansen 2013-03-21 21:35:51 +01:00
parent ade239f18b
commit dbc6c8c663
5 changed files with 95 additions and 2 deletions
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1
libc/Makefile
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@ -198,6 +198,7 @@ gettermmode.o \
gettimeofday.o \
getuid.o \
init.o \
ioctl.o \
ioleast.o \
isatty.o \
kernelinfo.o \

36
libc/include/sys/ioctl.h Normal file
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@ -0,0 +1,36 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix 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 3 of the License, or (at your
option) any later version.
The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
sys/ioctl.h
Miscellaneous device control interface.
*******************************************************************************/
#ifndef INCLUDE_SYS_IOCTL_H
#define INCLUDE_SYS_IOCTL_H
#include <features.h>
__BEGIN_DECLS
int ioctl(int fd, int request, ...);
__END_DECLS
#endif

39
libc/ioctl.cpp Normal file
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@ -0,0 +1,39 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix 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 3 of the License, or (at your
option) any later version.
The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
ioctl.cpp
Miscellaneous device control interface.
*******************************************************************************/
#include <sys/ioctl.h>
#include <sys/syscall.h>
#include <stdarg.h>
DEFN_SYSCALL3(int, sys_ioctl, SYSCALL_IOCTL, int, int, void*);
extern "C" int ioctl(int fd, int request, ...)
{
va_list ap;
va_start(ap, request);
void* ptr = va_arg(ap, void*);
va_end(ap);
return sys_ioctl(fd, request, ptr);
}

5
sortix/include/sortix/syscallnum.h
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@ -1,6 +1,6 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013.
This file is part of Sortix.
@ -105,6 +105,7 @@
#define SYSCALL_GETEGID 81
#define SYSCALL_SETEUID 82
#define SYSCALL_SETEGID 83
#define SYSCALL_MAX_NUM 84 /* index of highest constant + 1 */
#define SYSCALL_IOCTL 84
#define SYSCALL_MAX_NUM 85 /* index of highest constant + 1 */
#endif

16
sortix/io.cpp
View file

@ -325,6 +325,21 @@ static int sys_fcntl(int fd, int cmd, unsigned long arg)
return ret;
}
static int sys_ioctl(int fd, int cmd, void* /*ptr*/)
{
Ref<Descriptor> desc = CurrentProcess()->GetDescriptor(fd);
if ( !desc )
return -1;
int ret = -1;
switch ( cmd )
{
default:
errno = EINVAL;
break;
}
return ret;
}
static ssize_t sys_readdirents(int fd, kernel_dirent* dirent, size_t size/*,
size_t maxcount*/)
{
@ -594,6 +609,7 @@ void Init()
Syscall::Register(SYSCALL_FSYNC, (void*) sys_fsync);
Syscall::Register(SYSCALL_FTRUNCATE, (void*) sys_ftruncate);
Syscall::Register(SYSCALL_GETTERMMODE, (void*) sys_gettermmode);
Syscall::Register(SYSCALL_IOCTL, (void*) sys_ioctl);
Syscall::Register(SYSCALL_ISATTY, (void*) sys_isatty);
Syscall::Register(SYSCALL_LINKAT, (void*) sys_linkat);
Syscall::Register(SYSCALL_LINK, (void*) sys_link);