FreeBSD-5.3/sys/i386/ibcs2/ibcs2_fcntl.c
/*
* Copyright (c) 1995 Scott Bartram
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/i386/ibcs2/ibcs2_fcntl.c,v 1.25.4.1 2004/09/03 15:30:20 jhb Exp $");
#include "opt_spx_hack.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/fcntl.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/ttycom.h>
#include <i386/ibcs2/ibcs2_fcntl.h>
#include <i386/ibcs2/ibcs2_signal.h>
#include <i386/ibcs2/ibcs2_proto.h>
#include <i386/ibcs2/ibcs2_util.h>
static void cvt_iflock2flock(struct ibcs2_flock *, struct flock *);
static void cvt_flock2iflock(struct flock *, struct ibcs2_flock *);
static int cvt_o_flags(int);
static int oflags2ioflags(int);
static int ioflags2oflags(int);
static int
cvt_o_flags(flags)
int flags;
{
int r = 0;
/* convert mode into NetBSD mode */
if (flags & IBCS2_O_WRONLY) r |= O_WRONLY;
if (flags & IBCS2_O_RDWR) r |= O_RDWR;
if (flags & (IBCS2_O_NDELAY | IBCS2_O_NONBLOCK)) r |= O_NONBLOCK;
if (flags & IBCS2_O_APPEND) r |= O_APPEND;
if (flags & IBCS2_O_SYNC) r |= O_FSYNC;
if (flags & IBCS2_O_CREAT) r |= O_CREAT;
if (flags & IBCS2_O_TRUNC) r |= O_TRUNC /* | O_CREAT ??? */;
if (flags & IBCS2_O_EXCL) r |= O_EXCL;
if (flags & IBCS2_O_RDONLY) r |= O_RDONLY;
if (flags & IBCS2_O_PRIV) r |= O_EXLOCK;
if (flags & IBCS2_O_NOCTTY) r |= O_NOCTTY;
return r;
}
static void
cvt_flock2iflock(flp, iflp)
struct flock *flp;
struct ibcs2_flock *iflp;
{
switch (flp->l_type) {
case F_RDLCK:
iflp->l_type = IBCS2_F_RDLCK;
break;
case F_WRLCK:
iflp->l_type = IBCS2_F_WRLCK;
break;
case F_UNLCK:
iflp->l_type = IBCS2_F_UNLCK;
break;
}
iflp->l_whence = (short)flp->l_whence;
iflp->l_start = (ibcs2_off_t)flp->l_start;
iflp->l_len = (ibcs2_off_t)flp->l_len;
iflp->l_sysid = 0;
iflp->l_pid = (ibcs2_pid_t)flp->l_pid;
}
#ifdef DEBUG_IBCS2
static void
print_flock(struct flock *flp)
{
printf("flock: start=%x len=%x pid=%d type=%d whence=%d\n",
(int)flp->l_start, (int)flp->l_len, (int)flp->l_pid,
flp->l_type, flp->l_whence);
}
#endif
static void
cvt_iflock2flock(iflp, flp)
struct ibcs2_flock *iflp;
struct flock *flp;
{
flp->l_start = (off_t)iflp->l_start;
flp->l_len = (off_t)iflp->l_len;
flp->l_pid = (pid_t)iflp->l_pid;
switch (iflp->l_type) {
case IBCS2_F_RDLCK:
flp->l_type = F_RDLCK;
break;
case IBCS2_F_WRLCK:
flp->l_type = F_WRLCK;
break;
case IBCS2_F_UNLCK:
flp->l_type = F_UNLCK;
break;
}
flp->l_whence = iflp->l_whence;
}
/* convert iBCS2 mode into NetBSD mode */
static int
ioflags2oflags(flags)
int flags;
{
int r = 0;
if (flags & IBCS2_O_RDONLY) r |= O_RDONLY;
if (flags & IBCS2_O_WRONLY) r |= O_WRONLY;
if (flags & IBCS2_O_RDWR) r |= O_RDWR;
if (flags & IBCS2_O_NDELAY) r |= O_NONBLOCK;
if (flags & IBCS2_O_APPEND) r |= O_APPEND;
if (flags & IBCS2_O_SYNC) r |= O_FSYNC;
if (flags & IBCS2_O_NONBLOCK) r |= O_NONBLOCK;
if (flags & IBCS2_O_CREAT) r |= O_CREAT;
if (flags & IBCS2_O_TRUNC) r |= O_TRUNC;
if (flags & IBCS2_O_EXCL) r |= O_EXCL;
if (flags & IBCS2_O_NOCTTY) r |= O_NOCTTY;
return r;
}
/* convert NetBSD mode into iBCS2 mode */
static int
oflags2ioflags(flags)
int flags;
{
int r = 0;
if (flags & O_RDONLY) r |= IBCS2_O_RDONLY;
if (flags & O_WRONLY) r |= IBCS2_O_WRONLY;
if (flags & O_RDWR) r |= IBCS2_O_RDWR;
if (flags & O_NDELAY) r |= IBCS2_O_NONBLOCK;
if (flags & O_APPEND) r |= IBCS2_O_APPEND;
if (flags & O_FSYNC) r |= IBCS2_O_SYNC;
if (flags & O_NONBLOCK) r |= IBCS2_O_NONBLOCK;
if (flags & O_CREAT) r |= IBCS2_O_CREAT;
if (flags & O_TRUNC) r |= IBCS2_O_TRUNC;
if (flags & O_EXCL) r |= IBCS2_O_EXCL;
if (flags & O_NOCTTY) r |= IBCS2_O_NOCTTY;
return r;
}
int
ibcs2_open(td, uap)
struct thread *td;
struct ibcs2_open_args *uap;
{
struct proc *p = td->td_proc;
int noctty = uap->flags & IBCS2_O_NOCTTY;
int ret;
caddr_t sg = stackgap_init();
uap->flags = cvt_o_flags(uap->flags);
if (uap->flags & O_CREAT)
CHECKALTCREAT(td, &sg, uap->path);
else
CHECKALTEXIST(td, &sg, uap->path);
ret = open(td, (struct open_args *)uap);
#ifdef SPX_HACK
if (ret == ENXIO) {
if (!strcmp(uap->path, "/compat/ibcs2/dev/spx"))
ret = spx_open(td, uap);
} else
#endif /* SPX_HACK */
PROC_LOCK(p);
if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
struct file *fp;
int error;
error = fget(td, td->td_retval[0], &fp);
PROC_UNLOCK(p);
if (error)
return (EBADF);
/* ignore any error, just give it a try */
if (fp->f_type == DTYPE_VNODE)
fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, td->td_ucred,
td);
fdrop(fp, td);
} else
PROC_UNLOCK(p);
return ret;
}
int
ibcs2_creat(td, uap)
struct thread *td;
struct ibcs2_creat_args *uap;
{
struct open_args cup;
caddr_t sg = stackgap_init();
CHECKALTCREAT(td, &sg, uap->path);
cup.path = uap->path;
cup.mode = uap->mode;
cup.flags = O_WRONLY | O_CREAT | O_TRUNC;
return open(td, &cup);
}
int
ibcs2_access(td, uap)
struct thread *td;
struct ibcs2_access_args *uap;
{
struct access_args cup;
caddr_t sg = stackgap_init();
CHECKALTEXIST(td, &sg, uap->path);
cup.path = uap->path;
cup.flags = uap->flags;
return access(td, &cup);
}
int
ibcs2_fcntl(td, uap)
struct thread *td;
struct ibcs2_fcntl_args *uap;
{
intptr_t arg;
int error;
struct flock fl;
struct ibcs2_flock ifl;
arg = (intptr_t)uap->arg;
switch(uap->cmd) {
case IBCS2_F_DUPFD:
return (kern_fcntl(td, uap->fd, F_DUPFD, arg));
case IBCS2_F_GETFD:
return (kern_fcntl(td, uap->fd, F_GETFD, arg));
case IBCS2_F_SETFD:
return (kern_fcntl(td, uap->fd, F_SETFD, arg));
case IBCS2_F_GETFL:
error = kern_fcntl(td, uap->fd, F_GETFL, arg);
if (error)
return error;
td->td_retval[0] = oflags2ioflags(td->td_retval[0]);
return error;
case IBCS2_F_SETFL:
return (kern_fcntl(td, uap->fd, F_SETFL,
ioflags2oflags(arg)));
case IBCS2_F_GETLK:
{
error = copyin((caddr_t)uap->arg, (caddr_t)&ifl,
ibcs2_flock_len);
if (error)
return error;
cvt_iflock2flock(&ifl, &fl);
error = kern_fcntl(td, uap->fd, F_GETLK, (intptr_t)&fl);
if (error)
return error;
cvt_flock2iflock(&fl, &ifl);
return copyout((caddr_t)&ifl, (caddr_t)uap->arg,
ibcs2_flock_len);
}
case IBCS2_F_SETLK:
{
error = copyin((caddr_t)uap->arg, (caddr_t)&ifl,
ibcs2_flock_len);
if (error)
return error;
cvt_iflock2flock(&ifl, &fl);
return (kern_fcntl(td, uap->fd, F_SETLK, (intptr_t)&fl));
}
case IBCS2_F_SETLKW:
{
error = copyin((caddr_t)uap->arg, (caddr_t)&ifl,
ibcs2_flock_len);
if (error)
return error;
cvt_iflock2flock(&ifl, &fl);
return (kern_fcntl(td, uap->fd, F_SETLKW, (intptr_t)&fl));
}
}
return ENOSYS;
}