1 | /* $NetBSD: netbsd32_compat_20.c,v 1.34 2014/09/05 09:21:54 matt Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1998, 2001 Matthew R. Green |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
26 | * SUCH DAMAGE. |
27 | */ |
28 | |
29 | #include <sys/cdefs.h> |
30 | __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_20.c,v 1.34 2014/09/05 09:21:54 matt Exp $" ); |
31 | |
32 | #include <sys/param.h> |
33 | #include <sys/systm.h> |
34 | #include <sys/mount.h> |
35 | #include <sys/stat.h> |
36 | #include <sys/time.h> |
37 | #include <sys/ktrace.h> |
38 | #include <sys/vnode.h> |
39 | #include <sys/file.h> |
40 | #include <sys/filedesc.h> |
41 | #include <sys/namei.h> |
42 | #include <sys/syscallargs.h> |
43 | #include <sys/proc.h> |
44 | #include <sys/dirent.h> |
45 | |
46 | #include <compat/netbsd32/netbsd32.h> |
47 | #include <compat/netbsd32/netbsd32_syscallargs.h> |
48 | #include <compat/netbsd32/netbsd32_conv.h> |
49 | |
50 | static inline void compat_20_netbsd32_from_statvfs(struct statvfs *, |
51 | struct netbsd32_statfs *); |
52 | |
53 | static inline void |
54 | compat_20_netbsd32_from_statvfs(struct statvfs *sbp, struct netbsd32_statfs *sb32p) |
55 | { |
56 | sb32p->f_flags = sbp->f_flag; |
57 | sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; |
58 | sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; |
59 | sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; |
60 | sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; |
61 | sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; |
62 | sb32p->f_files = (netbsd32_long)sbp->f_files; |
63 | sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; |
64 | sb32p->f_fsid = sbp->f_fsidx; |
65 | sb32p->f_owner = sbp->f_owner; |
66 | sb32p->f_spare[0] = 0; |
67 | sb32p->f_spare[1] = 0; |
68 | sb32p->f_spare[2] = 0; |
69 | sb32p->f_spare[3] = 0; |
70 | (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, |
71 | sizeof(sb32p->f_fstypename)); |
72 | (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, |
73 | sizeof(sb32p->f_mntonname)); |
74 | (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, |
75 | sizeof(sb32p->f_mntfromname)); |
76 | } |
77 | |
78 | int |
79 | compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval) |
80 | { |
81 | /* { |
82 | syscallarg(netbsd32_statfsp_t) buf; |
83 | syscallarg(netbsd32_long) bufsize; |
84 | syscallarg(int) flags; |
85 | } */ |
86 | int root = 0; |
87 | struct proc *p = l->l_proc; |
88 | struct mount *mp, *nmp; |
89 | struct statvfs *sb; |
90 | struct netbsd32_statfs sb32; |
91 | void *sfsp; |
92 | size_t count, maxcount; |
93 | int error = 0; |
94 | |
95 | sb = STATVFSBUF_GET(); |
96 | maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); |
97 | sfsp = SCARG_P32(uap, buf); |
98 | mutex_enter(&mountlist_lock); |
99 | count = 0; |
100 | for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) { |
101 | if (vfs_busy(mp, &nmp)) { |
102 | continue; |
103 | } |
104 | if (sfsp && count < maxcount) { |
105 | error = dostatvfs(mp, sb, l, SCARG(uap, flags), 0); |
106 | if (error) { |
107 | vfs_unbusy(mp, false, &nmp); |
108 | error = 0; |
109 | continue; |
110 | } |
111 | compat_20_netbsd32_from_statvfs(sb, &sb32); |
112 | error = copyout(&sb32, sfsp, sizeof(sb32)); |
113 | if (error) { |
114 | vfs_unbusy(mp, false, NULL); |
115 | goto out; |
116 | } |
117 | sfsp = (char *)sfsp + sizeof(sb32); |
118 | root |= strcmp(sb->f_mntonname, "/" ) == 0; |
119 | } |
120 | count++; |
121 | vfs_unbusy(mp, false, &nmp); |
122 | } |
123 | mutex_exit(&mountlist_lock); |
124 | |
125 | if (root == 0 && p->p_cwdi->cwdi_rdir) { |
126 | /* |
127 | * fake a root entry |
128 | */ |
129 | error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, |
130 | sb, l, SCARG(uap, flags), 1); |
131 | if (error != 0) |
132 | goto out; |
133 | if (sfsp) { |
134 | compat_20_netbsd32_from_statvfs(sb, &sb32); |
135 | error = copyout(&sb32, sfsp, sizeof(sb32)); |
136 | if (error != 0) |
137 | goto out; |
138 | } |
139 | count++; |
140 | } |
141 | |
142 | if (sfsp && count > maxcount) |
143 | *retval = maxcount; |
144 | else |
145 | *retval = count; |
146 | out: |
147 | STATVFSBUF_PUT(sb); |
148 | return error; |
149 | } |
150 | |
151 | int |
152 | compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval) |
153 | { |
154 | /* { |
155 | syscallarg(const netbsd32_charp) path; |
156 | syscallarg(netbsd32_statfsp_t) buf; |
157 | } */ |
158 | struct mount *mp; |
159 | struct statvfs *sb; |
160 | struct netbsd32_statfs s32; |
161 | int error; |
162 | struct vnode *vp; |
163 | |
164 | error = namei_simple_user(SCARG_P32(uap, path), |
165 | NSM_FOLLOW_TRYEMULROOT, &vp); |
166 | if (error != 0) |
167 | return (error); |
168 | mp = vp->v_mount; |
169 | sb = &mp->mnt_stat; |
170 | vrele(vp); |
171 | if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) |
172 | return (error); |
173 | compat_20_netbsd32_from_statvfs(sb, &s32); |
174 | return copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); |
175 | } |
176 | |
177 | int |
178 | compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval) |
179 | { |
180 | /* { |
181 | syscallarg(int) fd; |
182 | syscallarg(netbsd32_statfsp_t) buf; |
183 | } */ |
184 | file_t *fp; |
185 | struct mount *mp; |
186 | struct statvfs *sb; |
187 | struct netbsd32_statfs s32; |
188 | int error; |
189 | |
190 | /* fd_getvnode() will use the descriptor for us */ |
191 | if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) |
192 | return (error); |
193 | mp = fp->f_vnode->v_mount; |
194 | sb = &mp->mnt_stat; |
195 | if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) |
196 | goto out; |
197 | compat_20_netbsd32_from_statvfs(sb, &s32); |
198 | error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); |
199 | out: |
200 | fd_putfile(SCARG(uap, fd)); |
201 | return (error); |
202 | } |
203 | |
204 | int |
205 | compat_20_netbsd32_fhstatfs(struct lwp *l, const struct compat_20_netbsd32_fhstatfs_args *uap, register_t *retval) |
206 | { |
207 | /* { |
208 | syscallarg(const netbsd32_fhandlep_t) fhp; |
209 | syscallarg(struct statvfs *) buf; |
210 | } */ |
211 | struct compat_30_sys_fhstatvfs1_args ua; |
212 | |
213 | NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); |
214 | NETBSD32TOP_UAP(buf, struct statvfs); |
215 | #ifdef notyet |
216 | NETBSD32TOP_UAP(flags, int); |
217 | #endif |
218 | return (compat_30_sys_fhstatvfs1(l, &ua, retval)); |
219 | } |
220 | |