AMD64 - Fix many compile-time warnings. int/ptr type mismatches, %llx, etc.
[dragonfly.git] / sys / vfs / portal / portal_vfsops.c
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1/*
2 * Copyright (c) 1992, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software donated to Berkeley by
6 * Jan-Simon Pendry.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)portal_vfsops.c 8.11 (Berkeley) 5/14/95
37 *
38 * $FreeBSD: src/sys/miscfs/portal/portal_vfsops.c,v 1.26.2.2 2001/07/26 20:37:16 iedowse Exp $
e5d03018 39 * $DragonFly: src/sys/vfs/portal/portal_vfsops.c,v 1.24 2007/05/18 17:05:13 dillon Exp $
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40 */
41
42/*
43 * Portal Filesystem
44 */
45
46#include <sys/param.h>
47#include <sys/systm.h>
48#include <sys/kernel.h>
49#include <sys/proc.h>
50#include <sys/filedesc.h>
51#include <sys/file.h>
52#include <sys/vnode.h>
53#include <sys/mount.h>
54#include <sys/malloc.h>
55#include <sys/socket.h>
56#include <sys/socketvar.h>
57#include <sys/protosw.h>
58#include <sys/domain.h>
1f2de5d4 59#include "portal.h"
984263bc 60
66a1ddf5 61extern struct vop_ops portal_vnode_vops;
0961aa92 62
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63static MALLOC_DEFINE(M_PORTALFSMNT, "PORTAL mount", "PORTAL mount structure");
64
a6ee311a 65static int portal_mount (struct mount *mp, char *path, caddr_t data,
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66 struct ucred *cred);
67static int portal_unmount (struct mount *mp, int mntflags);
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68static int portal_root (struct mount *mp, struct vnode **vpp);
69static int portal_statfs (struct mount *mp, struct statfs *sbp,
acde96db 70 struct ucred *);
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71
72/*
73 * Mount the per-process file descriptors (/dev/fd)
74 */
75static int
acde96db 76portal_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
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77{
78 struct file *fp;
79 struct portal_args args;
80 struct portalmount *fmp;
81 struct socket *so;
82 struct vnode *rvp;
83 struct portalnode *pn;
973c11b9 84 size_t size;
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85 int error;
86
87 /*
88 * Update is a no-op
89 */
90 if (mp->mnt_flag & MNT_UPDATE)
91 return (EOPNOTSUPP);
92
93 error = copyin(data, (caddr_t) &args, sizeof(struct portal_args));
94 if (error)
95 return (error);
96
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97 KKASSERT(curproc != NULL);
98 error = holdsock(curproc->p_fd, args.pa_socket, &fp);
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99 if (error)
100 return (error);
101 so = (struct socket *) fp->f_data;
102 if (so->so_proto->pr_domain->dom_family != AF_UNIX) {
9f87144f 103 fdrop(fp);
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104 return (ESOCKTNOSUPPORT);
105 }
106
107 MALLOC(pn, struct portalnode *, sizeof(struct portalnode),
108 M_TEMP, M_WAITOK);
109
110 MALLOC(fmp, struct portalmount *, sizeof(struct portalmount),
111 M_PORTALFSMNT, M_WAITOK); /* XXX */
112
0961aa92 113
66a1ddf5 114 vfs_add_vnodeops(mp, &portal_vnode_vops, &mp->mnt_vn_norm_ops);
0961aa92 115
6ddb7618 116 error = getnewvnode(VT_PORTAL, mp, &rvp, 0, 0);
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117 if (error) {
118 FREE(fmp, M_PORTALFSMNT);
119 FREE(pn, M_TEMP);
9f87144f 120 fdrop(fp);
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121 return (error);
122 }
123
124 rvp->v_data = pn;
125 rvp->v_type = VDIR;
126 rvp->v_flag |= VROOT;
127 VTOPORTAL(rvp)->pt_arg = 0;
128 VTOPORTAL(rvp)->pt_size = 0;
129 VTOPORTAL(rvp)->pt_fileid = PORTAL_ROOTFILEID;
130 fmp->pm_root = rvp;
131 fmp->pm_server = fp; fp->f_count++;
132
133 mp->mnt_flag |= MNT_LOCAL;
134 mp->mnt_data = (qaddr_t) fmp;
135 vfs_getnewfsid(mp);
136
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137 (void)copyinstr(args.pa_config,
138 mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size);
139 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
140
141#ifdef notdef
142 bzero(mp->mnt_stat.f_mntfromname, MNAMELEN);
143 bcopy("portal", mp->mnt_stat.f_mntfromname, sizeof("portal"));
144#endif
5fd012e0 145 vx_unlock(rvp);
984263bc 146
acde96db 147 (void)portal_statfs(mp, &mp->mnt_stat, cred);
9f87144f 148 fdrop(fp);
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149 return (0);
150}
151
152static int
acde96db 153portal_unmount(struct mount *mp, int mntflags)
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154{
155 int error, flags = 0;
156
157
158 if (mntflags & MNT_FORCE)
159 flags |= FORCECLOSE;
160
161 /*
162 * Clear out buffer cache. I don't think we
163 * ever get anything cached at this level at the
164 * moment, but who knows...
165 */
166#ifdef notyet
167 mntflushbuf(mp, 0);
168 if (mntinvalbuf(mp, 1))
169 return (EBUSY);
170#endif
171 /* There is 1 extra root vnode reference (pm_root). */
172 error = vflush(mp, 1, flags);
173 if (error)
174 return (error);
175
176 /*
177 * Shutdown the socket. This will cause the select in the
178 * daemon to wake up, and then the accept will get ECONNABORTED
179 * which it interprets as a request to go and bury itself.
180 */
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181 soshutdown((struct socket *) VFSTOPORTAL(mp)->pm_server->f_data,
182 SHUT_RDWR);
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183 /*
184 * Discard reference to underlying file. Must call closef because
185 * this may be the last reference.
186 */
902ec341 187 closef(VFSTOPORTAL(mp)->pm_server, NULL);
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188 /*
189 * Finally, throw away the portalmount structure
190 */
efda3bd0 191 kfree(mp->mnt_data, M_PORTALFSMNT); /* XXX */
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192 mp->mnt_data = 0;
193 return (0);
194}
195
196static int
1f03da75 197portal_root(struct mount *mp, struct vnode **vpp)
984263bc 198{
984263bc 199 struct vnode *vp;
44b1cf3d 200 int error;
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201
202 /*
203 * Return locked reference to root.
204 */
205 vp = VFSTOPORTAL(mp)->pm_root;
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206 error = vget(vp, LK_EXCLUSIVE | LK_RETRY);
207 if (error == 0)
208 *vpp = vp;
209 return (error);
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210}
211
212static int
acde96db 213portal_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
984263bc 214{
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215 sbp->f_flags = 0;
216 sbp->f_bsize = DEV_BSIZE;
217 sbp->f_iosize = DEV_BSIZE;
218 sbp->f_blocks = 2; /* 1K to keep df happy */
219 sbp->f_bfree = 0;
220 sbp->f_bavail = 0;
221 sbp->f_files = 1; /* Allow for "." */
222 sbp->f_ffree = 0; /* See comments above */
223 if (sbp != &mp->mnt_stat) {
224 sbp->f_type = mp->mnt_vfc->vfc_typenum;
225 bcopy(&mp->mnt_stat.f_fsid, &sbp->f_fsid, sizeof(sbp->f_fsid));
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226 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
227 }
228 return (0);
229}
230
231static struct vfsops portal_vfsops = {
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232 .vfs_mount = portal_mount,
233 .vfs_unmount = portal_unmount,
234 .vfs_root = portal_root,
235 .vfs_statfs = portal_statfs,
236 .vfs_sync = vfs_stdsync
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237};
238
239VFS_SET(portal_vfsops, portal, VFCF_SYNTHETIC);