NetBSD/sys/compat/ultrix/ultrix_pathname.c

336 lines
9.2 KiB
C

/* $NetBSD: ultrix_pathname.c,v 1.7 1998/08/09 20:37:57 perry Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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 University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
*
* @(#)sun_misc.c 8.1 (Berkeley) 6/18/93
*
* from: Header: sun_misc.c,v 1.16 93/04/07 02:46:27 torek Exp
*/
/*
* Ultrix emulation filesystem-namespace compatibility module.
*
* Ultrix system calls that examine the filesysten namespace
* are implemented here. Each system call has a wrapper that
* first checks if the given file exists at a special `emulation'
* pathname: the given path, prefixex with '/emul/ultrix', and
* if that pathname exists, it is used instead of the providd pathname.
*
* Used to locate OS-specific files (shared libraries, config files,
* etc) used by emul processes at their `normal' pathnames, without
* polluting, or conflicting with, the native filesysten namespace.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/vnode.h>
#include <sys/syscallargs.h>
#include <sys/proc.h>
#include <compat/ultrix/ultrix_syscallargs.h>
#include <compat/ultrix/ultrix_util.h>
const char ultrix_emul_path[] = "/emul/ultrix";
static int ultrixstatfs __P((struct statfs *sp, caddr_t buf));
int
ultrix_sys_creat(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_creat_args *uap = v;
struct sys_open_args ap;
caddr_t sg = stackgap_init(p->p_emul);
ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
SCARG(&ap, path) = SCARG(uap, path);
SCARG(&ap, flags) = O_WRONLY | O_CREAT | O_TRUNC;
SCARG(&ap, mode) = SCARG(uap, mode);
return (sys_open(p, &ap, retval));
}
int
ultrix_sys_access(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_access_args *uap = v;
caddr_t sg = stackgap_init(p->p_emul);
ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
return (sys_access(p, uap, retval));
}
int
ultrix_sys_stat(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_stat_args *uap = v;
caddr_t sg = stackgap_init(p->p_emul);
ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
return (compat_43_sys_stat(p, uap, retval));
}
int
ultrix_sys_lstat(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_lstat_args *uap = v;
caddr_t sg = stackgap_init(p->p_emul);
ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
return (compat_43_sys_lstat(p, uap, retval));
}
int
ultrix_sys_execv(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_execv_args /* {
syscallarg(char *) path;
syscallarg(char **) argv;
} */ *uap = v;
struct sys_execve_args ap;
caddr_t sg;
sg = stackgap_init(p->p_emul);
ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
SCARG(&ap, path) = SCARG(uap, path);
SCARG(&ap, argp) = SCARG(uap, argp);
SCARG(&ap, envp) = NULL;
return (sys_execve(p, &ap, retval));
}
int
ultrix_sys_execve(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_execve_args /* {
syscallarg(char *) path;
syscallarg(char **) argv;
syscallarg(char **) envp;
} */ *uap = v;
struct sys_execve_args ap;
caddr_t sg;
sg = stackgap_init(p->p_emul);
ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
SCARG(&ap, path) = SCARG(uap, path);
SCARG(&ap, argp) = SCARG(uap, argp);
SCARG(&ap, envp) = SCARG(uap, envp);
return (sys_execve(p, &ap, retval));
}
int
ultrix_sys_open(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_open_args *uap = v;
int l, r;
int noctty;
int ret;
caddr_t sg = stackgap_init(p->p_emul);
ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
/* convert open flags into NetBSD flags */
l = SCARG(uap, flags);
noctty = l & 0x8000;
r = (l & (0x0001 | 0x0002 | 0x0008 | 0x0040 | 0x0200 | 0x0400 | 0x0800));
r |= ((l & (0x0004 | 0x1000 | 0x4000)) ? O_NONBLOCK : 0);
r |= ((l & 0x0080) ? O_SHLOCK : 0);
r |= ((l & 0x0100) ? O_EXLOCK : 0);
r |= ((l & 0x2000) ? O_FSYNC : 0);
SCARG(uap, flags) = r;
ret = sys_open(p, (struct sys_open_args *)uap, retval);
if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
struct filedesc *fdp = p->p_fd;
struct file *fp = fdp->fd_ofiles[*retval];
/* ignore any error, just give it a try */
if (fp->f_type == DTYPE_VNODE)
(fp->f_ops->fo_ioctl)(fp, TIOCSCTTY, (caddr_t)0, p);
}
return ret;
}
struct ultrix_statfs {
long f_type; /* type of info, zero for now */
long f_bsize; /* fundamental file system block size */
long f_blocks; /* total blocks in file system */
long f_bfree; /* free blocks */
long f_bavail; /* free blocks available to non-super-user */
long f_files; /* total file nodes in file system */
long f_ffree; /* free file nodes in fs */
fsid_t f_fsid; /* file system id */
long f_spare[7]; /* spare for later */
};
/*
* Custruct ultrix statfs result from native.
* XXX should this be the same as returned by Ultrix getmnt(2)?
* XXX Ultrix predates DEV_BSIZE. Is conversion of disk space from 1k
* block units to DEV_BSIZE necessary?
*/
static int
ultrixstatfs(sp, buf)
struct statfs *sp;
caddr_t buf;
{
struct ultrix_statfs ssfs;
memset(&ssfs, 0, sizeof ssfs);
ssfs.f_type = 0;
ssfs.f_bsize = sp->f_bsize;
ssfs.f_blocks = sp->f_blocks;
ssfs.f_bfree = sp->f_bfree;
ssfs.f_bavail = sp->f_bavail;
ssfs.f_files = sp->f_files;
ssfs.f_ffree = sp->f_ffree;
ssfs.f_fsid = sp->f_fsid;
return copyout((caddr_t)&ssfs, buf, sizeof ssfs);
}
int
ultrix_sys_statfs(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_statfs_args *uap = v;
register struct mount *mp;
register struct statfs *sp;
int error;
struct nameidata nd;
caddr_t sg = stackgap_init(p->p_emul);
ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
if ((error = namei(&nd)) != 0)
return (error);
mp = nd.ni_vp->v_mount;
sp = &mp->mnt_stat;
vrele(nd.ni_vp);
if ((error = VFS_STATFS(mp, sp, p)) != 0)
return (error);
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf));
}
/*
* sys_fstatfs() takes an fd, not a path, and so needs no emul
* pathname processing; but it's similar enough to sys_statfs() that
* it goes here anyway.
*/
int
ultrix_sys_fstatfs(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_fstatfs_args *uap = v;
struct file *fp;
struct mount *mp;
register struct statfs *sp;
int error;
if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
mp = ((struct vnode *)fp->f_data)->v_mount;
sp = &mp->mnt_stat;
if ((error = VFS_STATFS(mp, sp, p)) != 0)
return (error);
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf));
}
int
ultrix_sys_mknod(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct ultrix_sys_mknod_args *uap = v;
caddr_t sg = stackgap_init(p->p_emul);
ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
if (S_ISFIFO(SCARG(uap, mode)))
return sys_mkfifo(p, uap, retval);
return sys_mknod(p, (struct sys_mknod_args *)uap, retval);
}