Rev 3 |
Go to most recent revision |
Blame |
Compare with Previous |
Last modification |
View Log
| RSS feed
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <fs/types.h>
#include <fs/errno.h>
#include <fs/task.h>
#include <fs/util.h>
#include <fs/maccess.h>
#include <fs/fcntl.h>
#include "file.h"
#include "dentry.h"
#include "fs.h"
/*
this are from bits/fcntl.h
if they are changed then this code must be rewritten!
#define F_DUPFD 0
#define F_GETFD 1
#define F_SETFD 2
#define F_GETFL 3
#define F_SETFL 4
#define F_GETLK 5
#define F_SETLK 6
#define F_SETLKW 7
*/
int dupfd(__pid_t pid, int fildes, void *ptr)
{
int res;
res=__duplicate_fd(pid,fildes,(int)ptr);
unlock_desctable(pid);
if (res) return -EMFILE;
return EOK;
}
int getfd(__pid_t pid, int fildes, void *ptr)
{
int res;
res=*fildesflags_ptr(pid,fildes);
unlock_desctable(pid);
return res;
}
int setfd(__pid_t pid, int fildes, void *ptr)
{
*fildesflags_ptr(pid,fildes)=((int)ptr)&FD_CLOEXEC;
unlock_desctable(pid);
return EOK;
}
int getfl(__pid_t pid, int fildes, void *ptr)
{
int res;
res=*fildesfflags_ptr(pid,fildes);
unlock_desctable(pid);
return res;
}
int setfl(__pid_t pid, int fildes, void *ptr)
{
*fildesfflags_ptr(pid,fildes)=((int)ptr)&
(O_APPEND|O_DSYNC|O_NONBLOCK|O_RSYNC|O_SYNC);
unlock_desctable(pid);
return EOK;
}
int dummy(__pid_t pid, int fildes, void *ptr)
{
unlock_desctable(pid);
return -EINVAL;
}
static struct {
int (*f)(__pid_t pid, int fildes, void *ptr);
} func[]={
{dupfd},
{getfd},
{setfd},
{getfl},
{setfl},
{dummy},
{dummy},
{dummy}
};
int k_fcntl(int fildes,int cmd,void *ptr)
{
__pid_t pid;
call_to_fs();
pid=__get_pid();
lock_desctable(pid);
if (!__isvalid_fd(pid,fildes)) {
lock_desctable(pid);
return_from_fs(-EBADF);
}
if (cmd<F_DUPFD||cmd>=F_SETLKW)
return_from_fs(-ENOSYS);
return_from_fs(func[cmd].f(pid,fildes,ptr));
}