231 lines
6.3 KiB
C
231 lines
6.3 KiB
C
/* $NetBSD: darwin_mount.c,v 1.2 2003/12/06 11:43:56 manu Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Emmanuel Dreyfus.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: darwin_mount.c,v 1.2 2003/12/06 11:43:56 manu Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sa.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/namei.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/syscallargs.h>
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#include <compat/mach/mach_types.h>
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#include <compat/mach/mach_vm.h>
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#include <compat/darwin/darwin_mount.h>
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#include <compat/darwin/darwin_syscallargs.h>
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static void native_to_darwin_statfs(struct statfs *, struct darwin_statfs *);
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int
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darwin_sys_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 darwin_sys_fstatfs_args /* {
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syscallarg(int) fd;
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syscallarg(struct darwin_statfs *) buf;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct file *fp;
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struct mount *mp;
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struct statfs *bs;
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struct darwin_statfs ds;
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int error;
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/* getvnode() will use the descriptor for us */
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if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)))
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return (error);
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mp = ((struct vnode *)fp->f_data)->v_mount;
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bs = &mp->mnt_stat;
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if ((error = VFS_STATFS(mp, bs, p)) != 0)
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goto out;
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bs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
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native_to_darwin_statfs(bs, &ds);
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error = copyout(&ds, SCARG(uap, buf), sizeof(ds));
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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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darwin_sys_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 darwin_sys_getfsstat_args /* {
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syscallarg(struct darwin_statfs *) buf;
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syscallarg(long) bufsize;
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syscallarg(int) flags;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct mount *mp, *nmp;
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struct statfs *bs;
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struct darwin_statfs ds;
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struct darwin_statfs *uds;
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long count, maxcount, error;
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maxcount = SCARG(uap, bufsize) / sizeof(struct darwin_statfs);
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uds = SCARG(uap, buf);
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for (count = 0, mp = mountlist.cqh_first;
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mp != (void *)&mountlist; mp = nmp) {
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nmp = mp->mnt_list.cqe_next;
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if ((uds != NULL) && (count < maxcount)) {
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bs = &mp->mnt_stat;
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if (((SCARG(uap, flags) & MNT_NOWAIT) == 0 ||
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(SCARG(uap, flags) & MNT_WAIT)) &&
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(error = VFS_STATFS(mp, bs, p)))
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continue;
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bs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
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native_to_darwin_statfs(bs, &ds);
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if ((error = copyout(&ds, uds, sizeof(*uds))) != 0)
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return error;
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uds++;
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}
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count++;
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}
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if ((uds != NULL) && (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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darwin_sys_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 darwin_sys_statfs_args /* {
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syscallarg(char *) path;
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syscallarg(struct statfs *) buf;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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struct mount *mp;
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struct statfs *bs;
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struct darwin_statfs ds;
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struct nameidata nd;
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int error;
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NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, 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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bs = &mp->mnt_stat;
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vrele(nd.ni_vp);
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if ((error = VFS_STATFS(mp, bs, p)) != 0)
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return error;
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bs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
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native_to_darwin_statfs(bs, &ds);
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error = copyout(&ds, SCARG(uap, buf), sizeof(ds));
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return error;
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}
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static void
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native_to_darwin_statfs(bs, ds)
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struct statfs *bs;
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struct darwin_statfs *ds;
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{
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long dflags = 0;
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if (bs->f_flags|MNT_RDONLY)
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dflags |= DARWIN_MNT_RDONLY;
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if (bs->f_flags|MNT_SYNCHRONOUS)
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dflags |= DARWIN_MNT_SYNCHRONOUS;
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if (bs->f_flags|MNT_NOEXEC)
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dflags |= DARWIN_MNT_NOEXEC;
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if (bs->f_flags|MNT_NOSUID)
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dflags |= DARWIN_MNT_NOSUID;
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if (bs->f_flags|MNT_NODEV)
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dflags |= DARWIN_MNT_NODEV;
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if (bs->f_flags|MNT_UNION)
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dflags |= DARWIN_MNT_UNION;
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if (bs->f_flags|MNT_ASYNC)
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dflags |= DARWIN_MNT_ASYNC;
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if (bs->f_flags|MNT_IGNORE)
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dflags |= DARWIN_MNT_DONTBROWSE;
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ds->f_otype = bs->f_type; /* XXX */
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ds->f_oflags = dflags & 0xffff;
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ds->f_bsize = bs->f_bsize;
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ds->f_iosize = bs->f_iosize;
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ds->f_blocks = bs->f_blocks;
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ds->f_bfree = bs->f_bfree;
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ds->f_bavail = bs->f_bavail;
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ds->f_files = bs->f_files;
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ds->f_ffree = bs->f_ffree;
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(void)memcpy(&ds->f_fsid, &bs->f_fsid, sizeof(ds->f_fsid));
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ds->f_owner = bs->f_owner;
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ds->f_reserved1 = 0;
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ds->f_type = bs->f_type; /* XXX */
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ds->f_flags = dflags;
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(void)strlcpy(ds->f_fstypename, bs->f_fstypename, DARWIN_MFSNAMELEN);
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(void)strlcpy(ds->f_mntonname, bs->f_mntonname, DARWIN_MNAMELEN);
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(void)strlcpy(ds->f_mntfromname, bs->f_mntfromname, DARWIN_MNAMELEN);
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return;
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}
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