/* $OpenBSD: ibcs2_fcntl.c,v 1.9 2002/03/14 01:26:50 millert Exp $ */
/* $NetBSD: ibcs2_fcntl.c,v 1.6 1996/05/03 17:05:20 christos Exp $ */
/*
* Copyright (c) 1997 Theo de Raadt
* 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/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/mount.h>
#include <sys/malloc.h>
#include <sys/syscallargs.h>
#include <sys/vnode.h>
#include <compat/ibcs2/ibcs2_types.h>
#include <compat/ibcs2/ibcs2_fcntl.h>
#include <compat/ibcs2/ibcs2_unistd.h>
#include <compat/ibcs2/ibcs2_signal.h>
#include <compat/ibcs2/ibcs2_syscallargs.h>
#include <compat/ibcs2/ibcs2_util.h>
static int cvt_o_flags(int);
static void cvt_flock2iflock(struct flock *, struct ibcs2_flock *);
static void cvt_iflock2flock(struct ibcs2_flock *, struct flock *);
static int ioflags2oflags(int);
static int oflags2ioflags(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_SYNC;
if (flags & IBCS2_O_CREAT) r |= O_CREAT;
if (flags & IBCS2_O_TRUNC) r |= O_TRUNC;
if (flags & IBCS2_O_EXCL) r |= O_EXCL;
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;
}
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_SYNC;
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_SYNC) 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_sys_open(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ibcs2_sys_open_args /* {
syscallarg(char *) path;
syscallarg(int) flags;
syscallarg(int) mode;
} */ *uap = v;
int noctty = SCARG(uap, flags) & IBCS2_O_NOCTTY;
int ret;
caddr_t sg = stackgap_init(p->p_emul);
SCARG(uap, flags) = cvt_o_flags(SCARG(uap, flags));
if (SCARG(uap, flags) & O_CREAT)
IBCS2_CHECK_ALT_CREAT(p, &sg, SCARG(uap, path));
else
IBCS2_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
ret = sys_open(p, uap, retval);
if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
struct filedesc *fdp = p->p_fd;
struct file *fp;
if ((fp = fd_getfile(fdp, *retval)) == NULL)
return EBADF;
FREF(fp);
if (fp->f_type == DTYPE_VNODE)
(fp->f_ops->fo_ioctl)(fp, TIOCSCTTY, (caddr_t) 0, p);
FRELE(fp);
}
return ret;
}
int
ibcs2_sys_creat(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ibcs2_sys_creat_args /* {
syscallarg(char *) path;
syscallarg(int) mode;
} */ *uap = v;
struct sys_open_args cup;
caddr_t sg = stackgap_init(p->p_emul);
IBCS2_CHECK_ALT_CREAT(p, &sg, SCARG(uap, path));
SCARG(&cup, path) = SCARG(uap, path);
SCARG(&cup, mode) = SCARG(uap, mode);
SCARG(&cup, flags) = O_WRONLY | O_CREAT | O_TRUNC;
return sys_open(p, &cup, retval);
}
int
ibcs2_sys_access(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ibcs2_sys_access_args /* {
syscallarg(char *) path;
syscallarg(int) flags;
} */ *uap = v;
struct sys_access_args cup;
caddr_t sg = stackgap_init(p->p_emul);
IBCS2_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
SCARG(&cup, path) = SCARG(uap, path);
SCARG(&cup, flags) = SCARG(uap, flags);
return sys_access(p, &cup, retval);
}
int
ibcs2_sys_eaccess(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct ibcs2_sys_eaccess_args /* {
syscallarg(char *) path;
syscallarg(int) flags;
} */ *uap = v;
register struct ucred *cred = p->p_ucred;
register struct vnode *vp;
int error, flags;
struct nameidata nd;
caddr_t sg = stackgap_init(p->p_emul);
IBCS2_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
if ((error = namei(&nd)) != 0)
return error;
vp = nd.ni_vp;
/* Flags == 0 means only check for existence. */
if (SCARG(uap, flags)) {
flags = 0;
if (SCARG(uap, flags) & IBCS2_R_OK)
flags |= VREAD;
if (SCARG(uap, flags) & IBCS2_W_OK)
flags |= VWRITE;
if (SCARG(uap, flags) & IBCS2_X_OK)
flags |= VEXEC;
if ((flags & VWRITE) == 0 || (error = vn_writechk(vp)) == 0)
error = VOP_ACCESS(vp, flags, cred, p);
}
vput(vp);
return error;
}
int
ibcs2_sys_fcntl(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ibcs2_sys_fcntl_args /* {
syscallarg(int) fd;
syscallarg(int) cmd;
syscallarg(char *) arg;
} */ *uap = v;
int error;
struct sys_fcntl_args fa;
struct flock *flp;
struct ibcs2_flock ifl;
switch(SCARG(uap, cmd)) {
case IBCS2_F_DUPFD:
SCARG(&fa, fd) = SCARG(uap, fd);
SCARG(&fa, cmd) = F_DUPFD;
SCARG(&fa, arg) = SCARG(uap, arg);
return sys_fcntl(p, &fa, retval);
case IBCS2_F_GETFD:
SCARG(&fa, fd) = SCARG(uap, fd);
SCARG(&fa, cmd) = F_GETFD;
SCARG(&fa, arg) = SCARG(uap, arg);
return sys_fcntl(p, &fa, retval);
case IBCS2_F_SETFD:
SCARG(&fa, fd) = SCARG(uap, fd);
SCARG(&fa, cmd) = F_SETFD;
SCARG(&fa, arg) = SCARG(uap, arg);
return sys_fcntl(p, &fa, retval);
case IBCS2_F_GETFL:
SCARG(&fa, fd) = SCARG(uap, fd);
SCARG(&fa, cmd) = F_GETFL;
SCARG(&fa, arg) = SCARG(uap, arg);
error = sys_fcntl(p, &fa, retval);
if (error)
return error;
*retval = oflags2ioflags(*retval);
return error;
case IBCS2_F_SETFL:
SCARG(&fa, fd) = SCARG(uap, fd);
SCARG(&fa, cmd) = F_SETFL;
SCARG(&fa, arg) = (void *)ioflags2oflags((int) SCARG(uap, arg));
return sys_fcntl(p, &fa, retval);
case IBCS2_F_GETLK:
{
caddr_t sg = stackgap_init(p->p_emul);
flp = stackgap_alloc(&sg, sizeof(*flp));
error = copyin((caddr_t)SCARG(uap, arg), (caddr_t)&ifl,
ibcs2_flock_len);
if (error)
return error;
cvt_iflock2flock(&ifl, flp);
SCARG(&fa, fd) = SCARG(uap, fd);
SCARG(&fa, cmd) = F_GETLK;
SCARG(&fa, arg) = (void *)flp;
error = sys_fcntl(p, &fa, retval);
if (error)
return error;
cvt_flock2iflock(flp, &ifl);
return copyout((caddr_t)&ifl, (caddr_t)SCARG(uap, arg),
ibcs2_flock_len);
}
case IBCS2_F_SETLK:
{
caddr_t sg = stackgap_init(p->p_emul);
flp = stackgap_alloc(&sg, sizeof(*flp));
error = copyin((caddr_t)SCARG(uap, arg), (caddr_t)&ifl,
ibcs2_flock_len);
if (error)
return error;
cvt_iflock2flock(&ifl, flp);
SCARG(&fa, fd) = SCARG(uap, fd);
SCARG(&fa, cmd) = F_SETLK;
SCARG(&fa, arg) = (void *)flp;
return sys_fcntl(p, &fa, retval);
}
case IBCS2_F_SETLKW:
{
caddr_t sg = stackgap_init(p->p_emul);
flp = stackgap_alloc(&sg, sizeof(*flp));
error = copyin((caddr_t)SCARG(uap, arg), (caddr_t)&ifl,
ibcs2_flock_len);
if (error)
return error;
cvt_iflock2flock(&ifl, flp);
SCARG(&fa, fd) = SCARG(uap, fd);
SCARG(&fa, cmd) = F_SETLKW;
SCARG(&fa, arg) = (void *)flp;
return sys_fcntl(p, &fa, retval);
}
case IBCS2_F_FREESP:
{
struct ibcs2_flock ifl;
off_t off, cur;
caddr_t sg = stackgap_init(p->p_emul);
struct sys_fstat_args ofst;
struct stat ost;
struct sys_lseek_args ols;
struct sys_ftruncate_args /* {
syscallarg(int) fd;
syscallarg(int) pad;
syscallarg(off_t) length;
} */ nuap;
error = copyin(SCARG(uap, arg), &ifl, sizeof ifl);
if (error)
return error;
SCARG(&ofst, fd) = SCARG(uap, fd);
SCARG(&ofst, sb) = stackgap_alloc(&sg,
sizeof(struct stat));
if ((error = sys_fstat(p, &ofst, retval)) != 0)
return error;
if ((error = copyin(SCARG(&ofst, sb), &ost,
sizeof ost)) != 0)
return error;
SCARG(&ols, fd) = SCARG(uap, fd);
SCARG(&ols, whence) = SEEK_CUR;
SCARG(&ols, offset) = 0;
if ((error = sys_lseek(p, &ols, (register_t *)&cur)) != 0)
return error;
off = (off_t)ifl.l_start;
switch (ifl.l_whence) {
case 0:
off = (off_t)ifl.l_start;
break;
case 1:
off = ost.st_size + (off_t)ifl.l_start;
break;
case 2:
off = cur - (off_t)ifl.l_start;
break;
default:
return EINVAL;
}
if (ifl.l_len != 0 && off + ifl.l_len != ost.st_size)
return EINVAL; /* Sorry, cannot truncate in middle */
SCARG(&nuap, fd) = SCARG(uap, fd);
SCARG(&nuap, length) = off;
return (sys_ftruncate(p, &nuap, retval));
}
}
return ENOSYS;
}
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