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NetBSD/sys/compat/irix/irix_fcntl.c

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/* $NetBSD: irix_fcntl.c,v 1.10 2002/09/06 13:18:43 gehenna Exp $ */
/*-
* Copyright (c) 2001-2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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>
__KERNEL_RCSID(0, "$NetBSD: irix_fcntl.c,v 1.10 2002/09/06 13:18:43 gehenna Exp $");
#include <sys/types.h>
#include <sys/signal.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/systm.h>
#include <sys/fcntl.h>
#include <sys/syscallargs.h>
#include <miscfs/specfs/specdev.h>
#include <compat/irix/irix_types.h>
#include <compat/irix/irix_signal.h>
#include <compat/irix/irix_fcntl.h>
#include <compat/irix/irix_usema.h>
#include <compat/irix/irix_syscallargs.h>
#include <compat/svr4/svr4_types.h>
#include <compat/svr4/svr4_signal.h>
#include <compat/svr4/svr4_ucontext.h>
#include <compat/svr4/svr4_lwp.h>
#include <compat/svr4/svr4_fcntl.h>
#include <compat/svr4/svr4_syscallargs.h>
static int fd_truncate __P((struct proc *, int, int, off_t, register_t *));
static int bsd_to_irix_fcntl_flags __P((int));
static int irix_to_bsd_fcntl_flags __P((int));
int
irix_sys_lseek64(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
/*
* Note: we have an alignement problem here. If pad2, pad3 and pad4
* are removed, lseek64 will break, because whence will be wrong.
*/
struct irix_sys_lseek64_args /* {
syscallarg(int) fd;
syscallarg(int) pad1;
syscallarg(irix_off64_t) offset;
syscallarg(int) whence;
syscallarg(int) pad2;
syscallarg(int) pad3;
syscallarg(int) pad4;
} */ *uap = v;
struct sys_lseek_args cup;
#ifdef DEBUG_IRIX
printf("irix_sys_lseek64(): fd = %d, pad1 = 0x%08x, offset = 0x%llx\n",
SCARG(uap, fd), SCARG(uap, pad1), SCARG(uap, offset));
printf("whence = 0x%08x, pad2 = 0x%08x, pad3 = 0x%08x, pad4 = 0x%08x\n",
SCARG(uap, whence), SCARG(uap, pad2), SCARG(uap, pad3),
SCARG(uap, pad4));
#endif
SCARG(&cup, fd) = SCARG(uap, fd);
SCARG(&cup, pad) = 0;
SCARG(&cup, offset) = SCARG(uap, offset);
SCARG(&cup, whence) = SCARG(uap, whence);
return sys_lseek(p, (void *)&cup, retval);
}
int
irix_sys_fcntl(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct irix_sys_fcntl_args /* {
syscallarg(int) fd;
syscallarg(int) cmd;
syscallarg(char *)arg;
} */ *uap = v;
struct svr4_sys_fcntl_args cup;
int cmd;
int error;
cmd = SCARG(uap, cmd);
switch (cmd) {
case SVR4_F_FREESP:
case SVR4_F_ALLOCSP: {
struct svr4_flock fl;
if ((error = copyin(SCARG(uap, arg), &fl, sizeof(fl))) != 0)
return error;
return fd_truncate(p, SCARG(uap, fd),
fl.l_whence, fl.l_start, retval);
break;
}
case SVR4_F_FREESP64:
case IRIX_F_ALLOCSP64: {
struct svr4_flock64 fl;
if ((error = copyin(SCARG(uap, arg), &fl, sizeof(fl))) != 0)
return error;
return fd_truncate(p, SCARG(uap, fd),
fl.l_whence, fl.l_start, retval);
break;
}
case IRIX_F_SETBSDLKW:
cmd = SVR4_F_SETLKW;
break;
case IRIX_F_SETBSDLK:
cmd = SVR4_F_SETLK;
break;
case IRIX_F_GETFL:
SCARG(&cup, fd) = SCARG(uap, fd);
SCARG(&cup, cmd) = F_GETFL;
SCARG(&cup, arg) = SCARG(uap, arg);
if ((error = sys_fcntl(p, &cup, retval)) != 0)
return error;
*retval = bsd_to_irix_fcntl_flags(*retval);
return 0;
break;
case IRIX_F_SETFL:
/*
* All unsupported flags are silently ignored
* except FDIRECT taht will return EINVAL
*/
if ((int)SCARG(uap, arg) & IRIX_FDIRECT)
return EINVAL;
SCARG(&cup, fd) = SCARG(uap, fd);
SCARG(&cup, arg) =
(char *)irix_to_bsd_fcntl_flags((int)SCARG(uap, arg));
SCARG(&cup, cmd) = F_SETFL;
return sys_fcntl(p, &cup, retval);
break;
case SVR4_F_DUPFD:
case SVR4_F_GETFD:
case SVR4_F_SETFD:
case SVR4_F_SETLK:
case SVR4_F_SETLKW:
case SVR4_F_CHKFL:
case SVR4_F_GETLK:
case SVR4_F_RSETLK:
case SVR4_F_RGETLK:
case SVR4_F_RSETLKW:
case SVR4_F_GETOWN:
case SVR4_F_SETOWN:
case SVR4_F_GETLK64:
case SVR4_F_SETLK64:
case SVR4_F_SETLKW64:
break;
case IRIX_F_CHKLK:
case IRIX_F_CHKLKW:
case IRIX_F_CLNLK:
case IRIX_F_DIOINFO:
case IRIX_F_FSGETXATTR:
case IRIX_F_FSSETXATTR:
case IRIX_F_GETBMAP:
case IRIX_F_FSSETDM:
case IRIX_F_RESVSP:
case IRIX_F_UNRESVSP:
case IRIX_F_RESVSP64:
case IRIX_F_UNRESVSP64:
case IRIX_F_GETBMAPA:
case IRIX_F_FSGETXATTRA:
case IRIX_F_SETBIOSIZE:
case IRIX_F_GETBIOSIZE:
case IRIX_F_GETOPS:
case IRIX_F_DMAPI:
case IRIX_F_FSYNC:
case IRIX_F_FSYNC64:
case IRIX_F_GETBDSATTR:
case IRIX_F_SETBDSATTR:
case IRIX_F_GETBMAPX:
case IRIX_F_SETPRIO:
case IRIX_F_GETPRIO:
default:
printf("Warning: unimplemented IRIX fcntl() command %d\n",
cmd);
return EINVAL;
break;
}
SCARG(&cup, fd) = SCARG(uap, fd);
SCARG(&cup, cmd) = cmd;
SCARG(&cup, arg) = SCARG(uap, arg);
return svr4_sys_fcntl(p, &cup, retval);
}
static int
fd_truncate(p, fd, whence, start, retval)
struct proc *p;
int fd;
int whence;
off_t start;
register_t *retval;
{
struct filedesc *fdp = p->p_fd;
struct file *fp;
struct vnode *vp;
struct vattr vattr;
struct sys_ftruncate_args ft;
int error;
if ((fp = fd_getfile(fdp, fd)) == NULL)
return EBADF;
vp = (struct vnode *)fp->f_data;
if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO)
return ESPIPE;
switch (whence) {
case SEEK_CUR:
SCARG(&ft, length) = fp->f_offset + start;
break;
case SEEK_END:
if ((error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) != 0)
return error;
SCARG(&ft, length) = vattr.va_size + start;
break;
case SEEK_SET:
SCARG(&ft, length) = start;
break;
default:
return EINVAL;
break;
}
SCARG(&ft, fd) = fd;
return sys_ftruncate(p, &ft, retval);
}
int
irix_sys_open(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct irix_sys_open_args /* {
syscallarg(char *) path;
syscallarg(int) flags;
syscallarg(mode_t) mode;
} */ *uap = v;
extern const struct cdevsw irix_usema_cdevsw;
int error;
int fd;
struct file *fp;
struct vnode *vp;
struct vnode *nvp;
if ((error = svr4_sys_open(p, v, retval)) != 0)
return error;
fd = (int)*retval;
if ((fp = fd_getfile(p->p_fd, fd)) == NULL)
return EBADF;
FILE_USE(fp);
vp = (struct vnode *)fp->f_data;
/*
* A special hook for the usemaclone driver: we need to clone
* the vnode, because the driver method need a context for each
* usemaclone open instance, and because we need to overload
* some vnode operations like setattr.
* The original vnode is stored in the v_data field of the cloned
* vnode.
*/
if (vp->v_type == VCHR &&
cdevsw_lookup(vp->v_rdev) == &irix_usema_cdevsw &&
minor(vp->v_rdev) == IRIX_USEMACLNDEV_MINOR) {
if ((error = getnewvnode(VCHR, vp->v_mount,
irix_usema_vnodeop_p,
(struct vnode **)&fp->f_data)) != 0) {
(void) vn_close(vp, fp->f_flag, fp->f_cred, p);
FILE_UNUSE(fp, p);
ffree(fp);
fdremove(p->p_fd, fd);
return error;
}
nvp = (struct vnode *)fp->f_data;
if (SCARG(uap, flags) & O_RDWR || SCARG(uap, flags) & O_WRONLY)
nvp->v_writecount++;
nvp->v_type = VCHR;
nvp->v_specinfo = (void *)malloc(sizeof(struct specinfo),
M_VNODE, M_WAITOK|M_ZERO);
nvp->v_rdev = vp->v_rdev;
nvp->v_specmountpoint = vp->v_specmountpoint;
nvp->v_data = (void *)vp;
vref(vp);
}
FILE_UNUSE(fp, p);
return 0;
}
static int
irix_to_bsd_fcntl_flags(flags)
int flags;
{
int ret = 0;
if (flags & IRIX_FNDELAY) ret |= FNDELAY;
if (flags & IRIX_FAPPEND) ret |= FAPPEND;
if (flags & IRIX_FSYNC) ret |= FFSYNC;
if (flags & IRIX_FDSYNC) ret |= FDSYNC;
if (flags & IRIX_FASYNC) ret |= FASYNC;
if (flags & IRIX_FRSYNC) ret |= FRSYNC;
if (flags & IRIX_FNONBLOCK) ret |= FNONBLOCK;
if (flags & IRIX_FLARGEFILE)
printf("Warning: ignored fcntl IRIX_FLARGEFILE flag");
if (flags & IRIX_FDIRECT)
printf("Warning: ignored fcntl IRIX_FDIRECT flag");
if (flags & IRIX_FBULK)
printf("Warning: ignored fcntl IRIX_FBULK flag");
if (flags & IRIX_FLCINVAL)
printf("Warning: ignored fcntl IRIX_FLCINVAL flag");
if (flags & IRIX_FLCFLUSH)
printf("Warning: ignored fcntl IRIX_FLCFLUSH flag");
return ret;
}
static int
bsd_to_irix_fcntl_flags(flags)
int flags;
{
int ret = 0;
if (flags & FNDELAY) ret |= IRIX_FNDELAY;
if (flags & FAPPEND) ret |= IRIX_FAPPEND;
if (flags & FFSYNC) ret |= IRIX_FSYNC;
if (flags & FDSYNC) ret |= IRIX_FDSYNC;
if (flags & FRSYNC) ret |= IRIX_FRSYNC;
if (flags & FNONBLOCK) ret |= IRIX_FNONBLOCK;
if (flags & FASYNC) ret |= IRIX_FASYNC;
return ret;
}
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