File: [local] / sys / compat / common / vfs_syscalls_43.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:09:06 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: vfs_syscalls_43.c,v 1.27 2005/05/26 01:15:12 pedro Exp $ */
/* $NetBSD: vfs_syscalls_43.c,v 1.4 1996/03/14 19:31:52 christos Exp $ */
/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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. 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.
*
* @(#)vfs_syscalls.c 8.28 (Berkeley) 12/10/94
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/vnode.h>
#include <sys/namei.h>
#include <sys/dirent.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/syslog.h>
#include <sys/unistd.h>
#include <sys/resourcevar.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <uvm/uvm_extern.h>
#include <sys/pipe.h>
static void cvtstat(struct stat *, struct stat43 *);
/*
* Convert from a new to an old stat structure.
*/
static void
cvtstat(st, ost)
struct stat *st;
struct stat43 *ost;
{
ost->st_dev = st->st_dev;
ost->st_ino = st->st_ino;
ost->st_mode = st->st_mode;
ost->st_nlink = st->st_nlink;
ost->st_uid = st->st_uid;
ost->st_gid = st->st_gid;
ost->st_rdev = st->st_rdev;
if (st->st_size < (quad_t)1 << 32)
ost->st_size = st->st_size;
else
ost->st_size = -2;
ost->st_atime = st->st_atime;
ost->st_mtime = st->st_mtime;
ost->st_ctime = st->st_ctime;
ost->st_blksize = st->st_blksize;
ost->st_blocks = st->st_blocks;
ost->st_flags = st->st_flags;
ost->st_gen = st->st_gen;
}
/*
* Get file status; this version follows links.
*/
/* ARGSUSED */
int
compat_43_sys_stat(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct compat_43_sys_stat_args /* {
syscallarg(char *) path;
syscallarg(struct stat43 *) ub;
} */ *uap = v;
struct stat sb;
struct stat43 osb;
int error;
struct nameidata nd;
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
if ((error = namei(&nd)) != 0)
return (error);
error = vn_stat(nd.ni_vp, &sb, p);
vput(nd.ni_vp);
if (error)
return (error);
/* Don't let non-root see generation numbers (for NFS security) */
if (suser(p, 0))
sb.st_gen = 0;
cvtstat(&sb, &osb);
error = copyout(&osb, SCARG(uap, ub), sizeof(osb));
return (error);
}
/*
* Get file status; this version does not follow links.
*/
/* ARGSUSED */
int
compat_43_sys_lstat(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct compat_43_sys_lstat_args /* {
syscallarg(char *) path;
syscallarg(struct stat43 *) ub;
} */ *uap = v;
struct stat sb;
struct stat43 osb;
int error;
struct nameidata nd;
NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
if ((error = namei(&nd)) != 0)
return (error);
error = vn_stat(nd.ni_vp, &sb, p);
vput(nd.ni_vp);
if (error)
return (error);
/* Don't let non-root see generation numbers (for NFS security) */
if (suser(p, 0))
sb.st_gen = 0;
cvtstat(&sb, &osb);
error = copyout(&osb, SCARG(uap, ub), sizeof(osb));
return (error);
}
/*
* Return status information about a file descriptor.
*/
/* ARGSUSED */
int
compat_43_sys_fstat(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct compat_43_sys_fstat_args /* {
syscallarg(int) fd;
syscallarg(struct stat43 *) sb;
} */ *uap = v;
int fd = SCARG(uap, fd);
struct filedesc *fdp = p->p_fd;
struct file *fp;
struct stat ub;
struct stat43 oub;
int error;
if ((fp = fd_getfile(fdp, fd)) == NULL)
return (EBADF);
FREF(fp);
error = (*fp->f_ops->fo_stat)(fp, &ub, p);
FRELE(fp);
if (error == 0) {
/* Don't let non-root see generation numbers
(for NFS security) */
if (suser(p, 0))
ub.st_gen = 0;
cvtstat(&ub, &oub);
error = copyout(&oub, SCARG(uap, sb), sizeof(oub));
}
return (error);
}
/*
* Truncate a file given a file descriptor.
*/
/* ARGSUSED */
int
compat_43_sys_ftruncate(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct compat_43_sys_ftruncate_args /* {
syscallarg(int) fd;
syscallarg(long) length;
} */ *uap = v;
struct sys_ftruncate_args /* {
syscallarg(int) fd;
syscallarg(int) pad;
syscallarg(off_t) length;
} */ nuap;
SCARG(&nuap, fd) = SCARG(uap, fd);
SCARG(&nuap, length) = SCARG(uap, length);
return (sys_ftruncate(p, &nuap, retval));
}
/*
* Truncate a file given its path name.
*/
/* ARGSUSED */
int
compat_43_sys_truncate(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct compat_43_sys_truncate_args /* {
syscallarg(char *) path;
syscallarg(long) length;
} */ *uap = v;
struct sys_truncate_args /* {
syscallarg(char *) path;
syscallarg(int) pad;
syscallarg(off_t) length;
} */ nuap;
SCARG(&nuap, path) = SCARG(uap, path);
SCARG(&nuap, length) = SCARG(uap, length);
return (sys_truncate(p, &nuap, retval));
}
/*
* Reposition read/write file offset.
*/
int
compat_43_sys_lseek(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct compat_43_sys_lseek_args /* {
syscallarg(int) fd;
syscallarg(long) offset;
syscallarg(int) whence;
} */ *uap = v;
struct sys_lseek_args /* {
syscallarg(int) fd;
syscallarg(int) pad;
syscallarg(off_t) offset;
syscallarg(int) whence;
} */ nuap;
off_t qret;
int error;
SCARG(&nuap, fd) = SCARG(uap, fd);
SCARG(&nuap, offset) = SCARG(uap, offset);
SCARG(&nuap, whence) = SCARG(uap, whence);
error = sys_lseek(p, &nuap, (register_t *)&qret);
*(long *)retval = qret;
return (error);
}
/*
* Create a file.
*/
int
compat_43_sys_creat(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct compat_43_sys_creat_args /* {
syscallarg(char *) path;
syscallarg(mode_t) mode;
} */ *uap = v;
struct sys_open_args /* {
syscallarg(char *) path;
syscallarg(int) flags;
syscallarg(mode_t) mode;
} */ nuap;
SCARG(&nuap, path) = SCARG(uap, path);
SCARG(&nuap, mode) = SCARG(uap, mode);
SCARG(&nuap, flags) = O_WRONLY | O_CREAT | O_TRUNC;
return (sys_open(p, &nuap, retval));
}
/*ARGSUSED*/
int
compat_43_sys_quota(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
return (ENOSYS);
}
/*
* Read a block of directory entries in a file system independent format.
*/
int
compat_43_sys_getdirentries(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct compat_43_sys_getdirentries_args /* {
syscallarg(int) fd;
syscallarg(char *) buf;
syscallarg(int) count;
syscallarg(long *) basep;
} */ *uap = v;
struct vnode *vp;
struct file *fp;
struct uio auio, kuio;
struct iovec aiov, kiov;
struct dirent *dp, *edp;
caddr_t dirbuf;
int error, eofflag, readcnt;
long loff;
if (SCARG(uap, count) < 0)
return EINVAL;
if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
if ((fp->f_flag & FREAD) == 0) {
error = EBADF;
goto bad;
}
vp = (struct vnode *)fp->f_data;
if (vp->v_type != VDIR) {
error = EINVAL;
goto bad;
}
aiov.iov_base = SCARG(uap, buf);
aiov.iov_len = SCARG(uap, count);
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_rw = UIO_READ;
auio.uio_segflg = UIO_USERSPACE;
auio.uio_procp = p;
auio.uio_resid = SCARG(uap, count);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
loff = auio.uio_offset = fp->f_offset;
# if (BYTE_ORDER != LITTLE_ENDIAN)
if (vp->v_mount->mnt_maxsymlinklen <= 0) {
error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag,
(int *)0, (u_long **)0);
fp->f_offset = auio.uio_offset;
} else
# endif
{
u_int nbytes = SCARG(uap, count);
nbytes = min(nbytes, MAXBSIZE);
kuio = auio;
kuio.uio_iov = &kiov;
kuio.uio_segflg = UIO_SYSSPACE;
kiov.iov_len = nbytes;
dirbuf = (caddr_t)malloc(nbytes, M_TEMP, M_WAITOK);
kiov.iov_base = dirbuf;
error = VOP_READDIR(vp, &kuio, fp->f_cred, &eofflag,
0, 0);
fp->f_offset = kuio.uio_offset;
if (error == 0) {
readcnt = nbytes - kuio.uio_resid;
edp = (struct dirent *)&dirbuf[readcnt];
for (dp = (struct dirent *)dirbuf; dp < edp; ) {
# if (BYTE_ORDER == LITTLE_ENDIAN)
/*
* The expected low byte of
* dp->d_namlen is our dp->d_type.
* The high MBZ byte of dp->d_namlen
* is our dp->d_namlen.
*/
dp->d_type = dp->d_namlen;
dp->d_namlen = 0;
# else
/*
* The dp->d_type is the high byte
* of the expected dp->d_namlen,
* so must be zero'ed.
*/
dp->d_type = 0;
# endif
if (dp->d_reclen > 0) {
dp = (struct dirent *)
((char *)dp + dp->d_reclen);
} else {
error = EIO;
break;
}
}
if (dp >= edp)
error = uiomove(dirbuf, readcnt, &auio);
}
FREE(dirbuf, M_TEMP);
}
VOP_UNLOCK(vp, 0, p);
if (error)
goto bad;
error = copyout((caddr_t)&loff, (caddr_t)SCARG(uap, basep),
sizeof(long));
*retval = SCARG(uap, count) - auio.uio_resid;
bad:
FRELE(fp);
return (error);
}