855 lines
20 KiB
C
855 lines
20 KiB
C
/* $NetBSD: netbsd32_fs.c,v 1.14 2003/06/29 22:29:37 fvdl Exp $ */
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/*
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* Copyright (c) 1998, 2001 Matthew R. Green
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: netbsd32_fs.c,v 1.14 2003/06/29 22:29:37 fvdl Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_ktrace.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/ktrace.h>
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#include <sys/resourcevar.h>
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#include <sys/vnode.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/namei.h>
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#include <sys/sa.h>
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#include <sys/syscallargs.h>
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#include <sys/proc.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_syscallargs.h>
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#include <compat/netbsd32/netbsd32_conv.h>
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static int dofilereadv32 __P((struct proc *, int, struct file *, struct netbsd32_iovec *,
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int, off_t *, int, register_t *));
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static int dofilewritev32 __P((struct proc *, int, struct file *, struct netbsd32_iovec *,
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int, off_t *, int, register_t *));
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static int change_utimes32 __P((struct vnode *, netbsd32_timevalp_t, struct proc *));
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int
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netbsd32_getfsstat(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32_getfsstat_args /* {
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syscallarg(netbsd32_statfsp_t) buf;
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syscallarg(netbsd32_long) bufsize;
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syscallarg(int) flags;
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} */ *uap = v;
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struct mount *mp, *nmp;
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struct statfs *sp;
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struct netbsd32_statfs sb32;
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caddr_t sfsp;
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long count, maxcount, error;
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struct proc *p = l->l_proc;
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maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs);
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sfsp = (caddr_t)NETBSD32PTR64(SCARG(uap, buf));
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simple_lock(&mountlist_slock);
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count = 0;
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for (mp = mountlist.cqh_first; mp != (void *)&mountlist; mp = nmp) {
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if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock)) {
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nmp = mp->mnt_list.cqe_next;
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continue;
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}
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if (sfsp && count < maxcount) {
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sp = &mp->mnt_stat;
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/*
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* If MNT_NOWAIT or MNT_LAZY is specified, do not
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* refresh the fsstat cache. MNT_WAIT or MNT_LAXY
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* overrides MNT_NOWAIT.
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*/
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if (SCARG(uap, flags) != MNT_NOWAIT &&
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SCARG(uap, flags) != MNT_LAZY &&
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(SCARG(uap, flags) == MNT_WAIT ||
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SCARG(uap, flags) == 0) &&
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(error = VFS_STATFS(mp, sp, p)) != 0) {
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simple_lock(&mountlist_slock);
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nmp = mp->mnt_list.cqe_next;
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vfs_unbusy(mp);
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continue;
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}
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sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
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sp->f_oflags = sp->f_flags & 0xffff;
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netbsd32_from_statfs(sp, &sb32);
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error = copyout(&sb32, sfsp, sizeof(sb32));
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if (error) {
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vfs_unbusy(mp);
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return (error);
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}
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sfsp += sizeof(sb32);
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}
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count++;
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simple_lock(&mountlist_slock);
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nmp = mp->mnt_list.cqe_next;
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vfs_unbusy(mp);
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}
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simple_unlock(&mountlist_slock);
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if (sfsp && count > maxcount)
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*retval = maxcount;
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else
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*retval = count;
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return (0);
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}
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int
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netbsd32_readv(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32_readv_args /* {
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syscallarg(int) fd;
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syscallarg(const netbsd32_iovecp_t) iovp;
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syscallarg(int) iovcnt;
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} */ *uap = v;
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int fd = SCARG(uap, fd);
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struct proc *p = l->l_proc;
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struct file *fp;
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struct filedesc *fdp = p->p_fd;
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if ((fp = fd_getfile(fdp, fd)) == NULL)
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return (EBADF);
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if ((fp->f_flag & FREAD) == 0)
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return (EBADF);
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FILE_USE(fp);
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return (dofilereadv32(p, fd, fp,
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(struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)),
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SCARG(uap, iovcnt), &fp->f_offset, FOF_UPDATE_OFFSET, retval));
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}
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/* Damn thing copies in the iovec! */
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int
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dofilereadv32(p, fd, fp, iovp, iovcnt, offset, flags, retval)
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struct proc *p;
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int fd;
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struct file *fp;
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struct netbsd32_iovec *iovp;
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int iovcnt;
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off_t *offset;
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int flags;
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register_t *retval;
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{
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struct uio auio;
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struct iovec *iov;
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struct iovec *needfree;
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struct iovec aiov[UIO_SMALLIOV];
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long i, cnt, error = 0;
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u_int iovlen;
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#ifdef KTRACE
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struct iovec *ktriov = NULL;
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#endif
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/* note: can't use iovlen until iovcnt is validated */
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iovlen = iovcnt * sizeof(struct iovec);
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if ((u_int)iovcnt > UIO_SMALLIOV) {
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if ((u_int)iovcnt > IOV_MAX) {
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error = EINVAL;
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goto out;
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}
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iov = malloc(iovlen, M_IOV, M_WAITOK);
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needfree = iov;
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} else if ((u_int)iovcnt > 0) {
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iov = aiov;
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needfree = NULL;
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} else {
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error = EINVAL;
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goto out;
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}
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auio.uio_iov = iov;
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auio.uio_iovcnt = iovcnt;
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auio.uio_rw = UIO_READ;
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auio.uio_segflg = UIO_USERSPACE;
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auio.uio_procp = p;
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error = netbsd32_to_iovecin(iovp, iov, iovcnt);
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if (error)
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goto done;
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auio.uio_resid = 0;
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for (i = 0; i < iovcnt; i++) {
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auio.uio_resid += iov->iov_len;
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/*
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* Reads return ssize_t because -1 is returned on error.
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* Therefore we must restrict the length to SSIZE_MAX to
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* avoid garbage return values.
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*/
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if (iov->iov_len > SSIZE_MAX || auio.uio_resid > SSIZE_MAX) {
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error = EINVAL;
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goto done;
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}
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iov++;
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}
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#ifdef KTRACE
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/*
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* if tracing, save a copy of iovec
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*/
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if (KTRPOINT(p, KTR_GENIO)) {
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ktriov = malloc(iovlen, M_TEMP, M_WAITOK);
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memcpy((caddr_t)ktriov, (caddr_t)auio.uio_iov, iovlen);
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}
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#endif
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cnt = auio.uio_resid;
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error = (*fp->f_ops->fo_read)(fp, offset, &auio, fp->f_cred, flags);
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if (error)
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if (auio.uio_resid != cnt && (error == ERESTART ||
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error == EINTR || error == EWOULDBLOCK))
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error = 0;
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cnt -= auio.uio_resid;
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#ifdef KTRACE
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if (KTRPOINT(p, KTR_GENIO))
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if (error == 0) {
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ktrgenio(p, fd, UIO_READ, ktriov, cnt,
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error);
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free(ktriov, M_TEMP);
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}
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#endif
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*retval = cnt;
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done:
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if (needfree)
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free(needfree, M_IOV);
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out:
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FILE_UNUSE(fp, p);
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return (error);
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}
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int
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netbsd32_writev(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32_writev_args /* {
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syscallarg(int) fd;
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syscallarg(const netbsd32_iovecp_t) iovp;
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syscallarg(int) iovcnt;
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} */ *uap = v;
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int fd = SCARG(uap, fd);
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struct file *fp;
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struct proc *p = l->l_proc;
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struct filedesc *fdp = p->p_fd;
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if ((fp = fd_getfile(fdp, fd)) == NULL)
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return (EBADF);
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if ((fp->f_flag & FWRITE) == 0)
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return (EBADF);
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FILE_USE(fp);
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return (dofilewritev32(p, fd, fp,
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(struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)),
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SCARG(uap, iovcnt), &fp->f_offset, FOF_UPDATE_OFFSET, retval));
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}
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int
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dofilewritev32(p, fd, fp, iovp, iovcnt, offset, flags, retval)
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struct proc *p;
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int fd;
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struct file *fp;
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struct netbsd32_iovec *iovp;
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int iovcnt;
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off_t *offset;
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int flags;
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register_t *retval;
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{
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struct uio auio;
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struct iovec *iov;
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struct iovec *needfree;
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struct iovec aiov[UIO_SMALLIOV];
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long i, cnt, error = 0;
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u_int iovlen;
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#ifdef KTRACE
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struct iovec *ktriov = NULL;
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#endif
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/* note: can't use iovlen until iovcnt is validated */
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iovlen = iovcnt * sizeof(struct iovec);
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if ((u_int)iovcnt > UIO_SMALLIOV) {
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if ((u_int)iovcnt > IOV_MAX) {
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error = EINVAL;
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goto out;
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}
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iov = malloc(iovlen, M_IOV, M_WAITOK);
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needfree = iov;
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} else if ((u_int)iovcnt > 0) {
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iov = aiov;
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needfree = NULL;
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} else {
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error = EINVAL;
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goto out;
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}
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auio.uio_iov = iov;
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auio.uio_iovcnt = iovcnt;
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auio.uio_rw = UIO_WRITE;
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auio.uio_segflg = UIO_USERSPACE;
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auio.uio_procp = p;
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error = netbsd32_to_iovecin(iovp, iov, iovcnt);
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if (error)
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goto done;
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auio.uio_resid = 0;
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for (i = 0; i < iovcnt; i++) {
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auio.uio_resid += iov->iov_len;
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/*
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* Writes return ssize_t because -1 is returned on error.
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* Therefore we must restrict the length to SSIZE_MAX to
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* avoid garbage return values.
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*/
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if (iov->iov_len > SSIZE_MAX || auio.uio_resid > SSIZE_MAX) {
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error = EINVAL;
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goto done;
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}
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iov++;
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}
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#ifdef KTRACE
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/*
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* if tracing, save a copy of iovec
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*/
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if (KTRPOINT(p, KTR_GENIO)) {
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ktriov = malloc(iovlen, M_TEMP, M_WAITOK);
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memcpy((caddr_t)ktriov, (caddr_t)auio.uio_iov, iovlen);
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}
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#endif
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cnt = auio.uio_resid;
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error = (*fp->f_ops->fo_write)(fp, offset, &auio, fp->f_cred, flags);
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if (error) {
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if (auio.uio_resid != cnt && (error == ERESTART ||
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error == EINTR || error == EWOULDBLOCK))
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error = 0;
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if (error == EPIPE)
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psignal(p, SIGPIPE);
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}
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cnt -= auio.uio_resid;
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#ifdef KTRACE
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if (KTRPOINT(p, KTR_GENIO))
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if (error == 0) {
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ktrgenio(p, fd, UIO_WRITE, ktriov, cnt,
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error);
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free(ktriov, M_TEMP);
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}
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#endif
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*retval = cnt;
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done:
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if (needfree)
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free(needfree, M_IOV);
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out:
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FILE_UNUSE(fp, p);
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return (error);
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}
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int
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netbsd32_utimes(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32_utimes_args /* {
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syscallarg(const netbsd32_charp) path;
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syscallarg(const netbsd32_timevalp_t) tptr;
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} */ *uap = v;
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int error;
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struct nameidata nd;
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struct proc *p = l->l_proc;
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NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE,
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(char *)NETBSD32PTR64(SCARG(uap, path)), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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error = change_utimes32(nd.ni_vp, SCARG(uap, tptr), p);
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vrele(nd.ni_vp);
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return (error);
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}
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/*
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* Common routine to set access and modification times given a vnode.
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*/
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static int
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change_utimes32(vp, tptr, p)
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struct vnode *vp;
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netbsd32_timevalp_t tptr;
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struct proc *p;
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{
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struct netbsd32_timeval tv32[2];
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struct timeval tv[2];
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struct vattr vattr;
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int error;
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VATTR_NULL(&vattr);
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if (tptr == NULL) {
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microtime(&tv[0]);
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tv[1] = tv[0];
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vattr.va_vaflags |= VA_UTIMES_NULL;
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} else {
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error = copyin((caddr_t)NETBSD32PTR64(tptr), tv32,
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sizeof(tv32));
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if (error)
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return (error);
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netbsd32_to_timeval(&tv32[0], &tv[0]);
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netbsd32_to_timeval(&tv32[1], &tv[1]);
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}
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VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
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vattr.va_atime.tv_sec = tv[0].tv_sec;
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vattr.va_atime.tv_nsec = tv[0].tv_usec * 1000;
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vattr.va_mtime.tv_sec = tv[1].tv_sec;
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vattr.va_mtime.tv_nsec = tv[1].tv_usec * 1000;
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error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
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VOP_UNLOCK(vp, 0);
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return (error);
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}
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int
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netbsd32_statfs(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32_statfs_args /* {
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syscallarg(const netbsd32_charp) path;
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syscallarg(netbsd32_statfsp_t) buf;
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} */ *uap = v;
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struct mount *mp;
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struct statfs *sp;
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struct netbsd32_statfs s32;
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int error;
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struct nameidata nd;
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struct proc *p = l->l_proc;
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NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE,
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(char *)NETBSD32PTR64(SCARG(uap, path)), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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mp = nd.ni_vp->v_mount;
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sp = &mp->mnt_stat;
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vrele(nd.ni_vp);
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if ((error = VFS_STATFS(mp, sp, p)) != 0)
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return (error);
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sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
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netbsd32_from_statfs(sp, &s32);
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return (copyout(&s32, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)),
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sizeof(s32)));
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}
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int
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netbsd32_fstatfs(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32_fstatfs_args /* {
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syscallarg(int) fd;
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syscallarg(netbsd32_statfsp_t) buf;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
struct mount *mp;
|
|
struct statfs *sp;
|
|
struct netbsd32_statfs s32;
|
|
int error;
|
|
struct proc *p = l->l_proc;
|
|
|
|
/* getvnode() will use the descriptor for us */
|
|
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)
|
|
goto out;
|
|
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
|
|
netbsd32_from_statfs(sp, &s32);
|
|
error = copyout(&s32, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)),
|
|
sizeof(s32));
|
|
out:
|
|
FILE_UNUSE(fp, p);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
netbsd32_futimes(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct netbsd32_futimes_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(const netbsd32_timevalp_t) tptr;
|
|
} */ *uap = v;
|
|
int error;
|
|
struct file *fp;
|
|
struct proc *p = l->l_proc;
|
|
|
|
/* getvnode() will use the descriptor for us */
|
|
if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
|
|
return (error);
|
|
|
|
error = change_utimes32((struct vnode *)fp->f_data,
|
|
SCARG(uap, tptr), p);
|
|
FILE_UNUSE(fp, p);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
netbsd32_getdents(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct netbsd32_getdents_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(netbsd32_charp) buf;
|
|
syscallarg(netbsd32_size_t) count;
|
|
} */ *uap = v;
|
|
struct file *fp;
|
|
int error, done;
|
|
struct proc *p = l->l_proc;
|
|
|
|
/* getvnode() will use the descriptor for us */
|
|
if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
|
|
return (error);
|
|
if ((fp->f_flag & FREAD) == 0) {
|
|
error = EBADF;
|
|
goto out;
|
|
}
|
|
error = vn_readdir(fp, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)),
|
|
UIO_USERSPACE, SCARG(uap, count), &done, p, 0, 0);
|
|
*retval = done;
|
|
out:
|
|
FILE_UNUSE(fp, p);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
netbsd32_lutimes(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct netbsd32_lutimes_args /* {
|
|
syscallarg(const netbsd32_charp) path;
|
|
syscallarg(const netbsd32_timevalp_t) tptr;
|
|
} */ *uap = v;
|
|
int error;
|
|
struct nameidata nd;
|
|
struct proc *p = l->l_proc;
|
|
|
|
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE,
|
|
(caddr_t)NETBSD32PTR64(SCARG(uap, path)), p);
|
|
if ((error = namei(&nd)) != 0)
|
|
return (error);
|
|
|
|
error = change_utimes32(nd.ni_vp, SCARG(uap, tptr), p);
|
|
|
|
vrele(nd.ni_vp);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
netbsd32___stat13(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct netbsd32___stat13_args /* {
|
|
syscallarg(const netbsd32_charp) path;
|
|
syscallarg(netbsd32_statp_t) ub;
|
|
} */ *uap = v;
|
|
struct netbsd32_stat sb32;
|
|
struct stat sb;
|
|
int error;
|
|
struct nameidata nd;
|
|
caddr_t sg;
|
|
const char *path;
|
|
struct proc *p = l->l_proc;
|
|
|
|
path = (char *)NETBSD32PTR64(SCARG(uap, path));
|
|
sg = stackgap_init(p, 0);
|
|
CHECK_ALT_EXIST(p, &sg, path);
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, 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);
|
|
netbsd32_from___stat13(&sb, &sb32);
|
|
error = copyout(&sb32, (caddr_t)NETBSD32PTR64(SCARG(uap, ub)),
|
|
sizeof(sb32));
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
netbsd32___fstat13(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct netbsd32___fstat13_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(netbsd32_statp_t) sb;
|
|
} */ *uap = v;
|
|
int fd = SCARG(uap, fd);
|
|
struct proc *p = l->l_proc;
|
|
struct filedesc *fdp = p->p_fd;
|
|
struct file *fp;
|
|
struct netbsd32_stat sb32;
|
|
struct stat ub;
|
|
int error = 0;
|
|
|
|
if ((fp = fd_getfile(fdp, fd)) == NULL)
|
|
return (EBADF);
|
|
|
|
FILE_USE(fp);
|
|
error = (*fp->f_ops->fo_stat)(fp, &ub, p);
|
|
FILE_UNUSE(fp, p);
|
|
|
|
if (error == 0) {
|
|
netbsd32_from___stat13(&ub, &sb32);
|
|
error = copyout(&sb32, (caddr_t)NETBSD32PTR64(SCARG(uap, sb)),
|
|
sizeof(sb32));
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
netbsd32___lstat13(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct netbsd32___lstat13_args /* {
|
|
syscallarg(const netbsd32_charp) path;
|
|
syscallarg(netbsd32_statp_t) ub;
|
|
} */ *uap = v;
|
|
struct netbsd32_stat sb32;
|
|
struct stat sb;
|
|
int error;
|
|
struct nameidata nd;
|
|
caddr_t sg;
|
|
const char *path;
|
|
struct proc *p = l->l_proc;
|
|
|
|
path = (char *)NETBSD32PTR64(SCARG(uap, path));
|
|
sg = stackgap_init(p, 0);
|
|
CHECK_ALT_EXIST(p, &sg, path);
|
|
|
|
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, 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);
|
|
netbsd32_from___stat13(&sb, &sb32);
|
|
error = copyout(&sb32, (caddr_t)NETBSD32PTR64(SCARG(uap, ub)),
|
|
sizeof(sb32));
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
netbsd32_preadv(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct netbsd32_preadv_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(const netbsd32_iovecp_t) iovp;
|
|
syscallarg(int) iovcnt;
|
|
syscallarg(int) pad;
|
|
syscallarg(off_t) offset;
|
|
} */ *uap = v;
|
|
struct proc *p = l->l_proc;
|
|
struct filedesc *fdp = p->p_fd;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
off_t offset;
|
|
int error, fd = SCARG(uap, fd);
|
|
|
|
if ((fp = fd_getfile(fdp, fd)) == NULL)
|
|
return (EBADF);
|
|
|
|
if ((fp->f_flag & FREAD) == 0)
|
|
return (EBADF);
|
|
|
|
FILE_USE(fp);
|
|
|
|
vp = (struct vnode *)fp->f_data;
|
|
if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) {
|
|
error = ESPIPE;
|
|
goto out;
|
|
}
|
|
|
|
offset = SCARG(uap, offset);
|
|
|
|
/*
|
|
* XXX This works because no file systems actually
|
|
* XXX take any action on the seek operation.
|
|
*/
|
|
if ((error = VOP_SEEK(vp, fp->f_offset, offset, fp->f_cred)) != 0)
|
|
goto out;
|
|
|
|
return (dofilereadv32(p, fd, fp,
|
|
(struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)),
|
|
SCARG(uap, iovcnt), &offset, 0, retval));
|
|
|
|
out:
|
|
FILE_UNUSE(fp, p);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
netbsd32_pwritev(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct netbsd32_pwritev_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(const netbsd32_iovecp_t) iovp;
|
|
syscallarg(int) iovcnt;
|
|
syscallarg(int) pad;
|
|
syscallarg(off_t) offset;
|
|
} */ *uap = v;
|
|
struct proc *p = l->l_proc;
|
|
struct filedesc *fdp = p->p_fd;
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
off_t offset;
|
|
int error, fd = SCARG(uap, fd);
|
|
|
|
if ((fp = fd_getfile(fdp, fd)) == NULL)
|
|
return (EBADF);
|
|
|
|
if ((fp->f_flag & FWRITE) == 0)
|
|
return (EBADF);
|
|
|
|
FILE_USE(fp);
|
|
|
|
vp = (struct vnode *)fp->f_data;
|
|
if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) {
|
|
error = ESPIPE;
|
|
goto out;
|
|
}
|
|
|
|
offset = SCARG(uap, offset);
|
|
|
|
/*
|
|
* XXX This works because no file systems actually
|
|
* XXX take any action on the seek operation.
|
|
*/
|
|
if ((error = VOP_SEEK(vp, fp->f_offset, offset, fp->f_cred)) != 0)
|
|
goto out;
|
|
|
|
return (dofilewritev32(p, fd, fp,
|
|
(struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)),
|
|
SCARG(uap, iovcnt), &offset, 0, retval));
|
|
|
|
out:
|
|
FILE_UNUSE(fp, p);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Find pathname of process's current directory.
|
|
*
|
|
* Use vfs vnode-to-name reverse cache; if that fails, fall back
|
|
* to reading directory contents.
|
|
*/
|
|
int
|
|
getcwd_common __P((struct vnode *, struct vnode *,
|
|
char **, char *, int, int, struct proc *));
|
|
|
|
int netbsd32___getcwd(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct netbsd32___getcwd_args /* {
|
|
syscallarg(char *) bufp;
|
|
syscallarg(size_t) length;
|
|
} */ *uap = v;
|
|
struct proc *p = l->l_proc;
|
|
int error;
|
|
char *path;
|
|
char *bp, *bend;
|
|
int len = (int)SCARG(uap, length);
|
|
int lenused;
|
|
|
|
if (len > MAXPATHLEN*4)
|
|
len = MAXPATHLEN*4;
|
|
else if (len < 2)
|
|
return ERANGE;
|
|
|
|
path = (char *)malloc(len, M_TEMP, M_WAITOK);
|
|
if (!path)
|
|
return ENOMEM;
|
|
|
|
bp = &path[len];
|
|
bend = bp;
|
|
*(--bp) = '\0';
|
|
|
|
/*
|
|
* 5th argument here is "max number of vnodes to traverse".
|
|
* Since each entry takes up at least 2 bytes in the output buffer,
|
|
* limit it to N/2 vnodes for an N byte buffer.
|
|
*/
|
|
#define GETCWD_CHECK_ACCESS 0x0001
|
|
error = getcwd_common (p->p_cwdi->cwdi_cdir, NULL, &bp, path, len/2,
|
|
GETCWD_CHECK_ACCESS, p);
|
|
|
|
if (error)
|
|
goto out;
|
|
lenused = bend - bp;
|
|
*retval = lenused;
|
|
/* put the result into user buffer */
|
|
error = copyout(bp, (caddr_t)NETBSD32PTR64(SCARG(uap, bufp)), lenused);
|
|
|
|
out:
|
|
free(path, M_TEMP);
|
|
return error;
|
|
}
|