1 /* $NetBSD: netbsd32_compat_12.c,v 1.36 2021/09/07 11:43:05 riastradh 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_12.c,v 1.36 2021/09/07 11:43:05 riastradh Exp $");
31
32 #if defined(_KERNEL_OPT)
33 #include "opt_compat_netbsd.h"
34 #endif
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/module.h>
39 #include <sys/filedesc.h>
40 #include <sys/mount.h>
41 #include <sys/mman.h>
42 #include <sys/namei.h>
43 #include <sys/proc.h>
44 #include <sys/stat.h>
45 #include <sys/swap.h>
46 #include <sys/vfs_syscalls.h>
47
48 #include <sys/syscallargs.h>
49 #include <sys/syscallvar.h>
50
51 #include <compat/sys/stat.h>
52
53 #include <compat/netbsd32/netbsd32.h>
54 #include <compat/netbsd32/netbsd32_syscall.h>
55 #include <compat/netbsd32/netbsd32_syscallargs.h>
56
57 static void netbsd32_stat12_to_netbsd32(struct stat12 *,
58 struct netbsd32_stat12 *);
59
60 /* for use with {,fl}stat() */
61 static void
netbsd32_stat12_to_netbsd32(struct stat12 * sp12,struct netbsd32_stat12 * sp32)62 netbsd32_stat12_to_netbsd32(struct stat12 *sp12, struct netbsd32_stat12 *sp32)
63 {
64
65 memset(sp32, 0, sizeof(*sp32));
66 sp32->st_dev = sp12->st_dev;
67 sp32->st_ino = sp12->st_ino;
68 sp32->st_mode = sp12->st_mode;
69 sp32->st_nlink = sp12->st_nlink;
70 sp32->st_uid = sp12->st_uid;
71 sp32->st_gid = sp12->st_gid;
72 sp32->st_rdev = sp12->st_rdev;
73 if (sp12->st_size < (quad_t)1 << 32)
74 sp32->st_size = sp12->st_size;
75 else
76 sp32->st_size = -2;
77 sp32->st_atimespec.tv_sec = sp12->st_atimespec.tv_sec;
78 sp32->st_atimespec.tv_nsec = sp12->st_atimespec.tv_nsec;
79 sp32->st_mtimespec.tv_sec = sp12->st_mtimespec.tv_sec;
80 sp32->st_mtimespec.tv_nsec = sp12->st_mtimespec.tv_nsec;
81 sp32->st_ctimespec.tv_sec = sp12->st_ctimespec.tv_sec;
82 sp32->st_ctimespec.tv_nsec = sp12->st_ctimespec.tv_nsec;
83 sp32->st_blocks = sp12->st_blocks;
84 sp32->st_blksize = sp12->st_blksize;
85 sp32->st_flags = sp12->st_flags;
86 sp32->st_gen = sp12->st_gen;
87 }
88
89 int
compat_12_netbsd32_reboot(struct lwp * l,const struct compat_12_netbsd32_reboot_args * uap,register_t * retval)90 compat_12_netbsd32_reboot(struct lwp *l, const struct compat_12_netbsd32_reboot_args *uap, register_t *retval)
91 {
92 /* {
93 syscallarg(int) opt;
94 } */
95 struct compat_12_sys_reboot_args ua;
96
97 NETBSD32TO64_UAP(opt);
98 return compat_12_sys_reboot(l, &ua, retval);
99 }
100
101 int
compat_12_netbsd32_msync(struct lwp * l,const struct compat_12_netbsd32_msync_args * uap,register_t * retval)102 compat_12_netbsd32_msync(struct lwp *l, const struct compat_12_netbsd32_msync_args *uap, register_t *retval)
103 {
104 /* {
105 syscallarg(netbsd32_voidp) addr;
106 syscallarg(netbsd32_size_t) len;
107 } */
108 struct sys___msync13_args ua;
109
110 NETBSD32TOP_UAP(addr, void *);
111 NETBSD32TOX_UAP(len, size_t);
112 SCARG(&ua, flags) = MS_SYNC | MS_INVALIDATE;
113 return sys___msync13(l, &ua, retval);
114 }
115
116 int
compat_12_netbsd32_oswapon(struct lwp * l,const struct compat_12_netbsd32_oswapon_args * uap,register_t * retval)117 compat_12_netbsd32_oswapon(struct lwp *l, const struct compat_12_netbsd32_oswapon_args *uap, register_t *retval)
118 {
119 /* {
120 syscallarg(const netbsd32_charp) name;
121 } */
122 struct sys_swapctl_args ua;
123
124 SCARG(&ua, cmd) = SWAP_ON;
125 SCARG(&ua, arg) = SCARG_P32(uap, name);
126 SCARG(&ua, misc) = 0; /* priority */
127 return sys_swapctl(l, &ua, retval);
128 }
129
130 int
compat_12_netbsd32_stat12(struct lwp * l,const struct compat_12_netbsd32_stat12_args * uap,register_t * retval)131 compat_12_netbsd32_stat12(struct lwp *l, const struct compat_12_netbsd32_stat12_args *uap, register_t *retval)
132 {
133 /* {
134 syscallarg(const netbsd32_charp) path;
135 syscallarg(netbsd32_stat12p_t) ub;
136 } */
137 struct netbsd32_stat12 sb32;
138 struct stat12 sb12;
139 struct stat sb;
140 int error;
141
142 error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &sb);
143 if (error)
144 return error;
145
146 compat_12_stat_conv(&sb, &sb12);
147 netbsd32_stat12_to_netbsd32(&sb12, &sb32);
148
149 return copyout(&sb32, SCARG_P32(uap, ub), sizeof sb32);
150 }
151
152 int
compat_12_netbsd32_fstat12(struct lwp * l,const struct compat_12_netbsd32_fstat12_args * uap,register_t * retval)153 compat_12_netbsd32_fstat12(struct lwp *l, const struct compat_12_netbsd32_fstat12_args *uap, register_t *retval)
154 {
155 /* {
156 syscallarg(int) fd;
157 syscallarg(netbsd32_stat12p_t) sb;
158 } */
159 struct netbsd32_stat12 sb32;
160 struct stat12 sb12;
161 struct stat sb;
162 int error;
163
164 error = do_sys_fstat(SCARG(uap, fd), &sb);
165 if (error)
166 return error;
167
168 compat_12_stat_conv(&sb, &sb12);
169 netbsd32_stat12_to_netbsd32(&sb12, &sb32);
170
171 return copyout(&sb32, SCARG_P32(uap, sb), sizeof sb32);
172 }
173
174 int
compat_12_netbsd32_lstat12(struct lwp * l,const struct compat_12_netbsd32_lstat12_args * uap,register_t * retval)175 compat_12_netbsd32_lstat12(struct lwp *l, const struct compat_12_netbsd32_lstat12_args *uap, register_t *retval)
176 {
177 /* {
178 syscallarg(const netbsd32_charp) path;
179 syscallarg(netbsd32_stat12p_t) ub;
180 } */
181 struct netbsd32_stat12 sb32;
182 struct stat12 sb12;
183 struct stat sb;
184 int error;
185
186 error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &sb);
187 if (error)
188 return error;
189
190 compat_12_stat_conv(&sb, &sb12);
191 netbsd32_stat12_to_netbsd32(&sb12, &sb32);
192
193 return copyout(&sb32, SCARG_P32(uap, ub), sizeof sb32);
194 }
195
196 int
compat_12_netbsd32_getdirentries(struct lwp * l,const struct compat_12_netbsd32_getdirentries_args * uap,register_t * retval)197 compat_12_netbsd32_getdirentries(struct lwp *l, const struct compat_12_netbsd32_getdirentries_args *uap, register_t *retval)
198 {
199 /* {
200 syscallarg(int) fd;
201 syscallarg(netbsd32_charp) buf;
202 syscallarg(u_int) count;
203 syscallarg(netbsd32_longp) basep;
204 } */
205 struct compat_12_sys_getdirentries_args ua;
206
207 NETBSD32TO64_UAP(fd);
208 NETBSD32TOP_UAP(buf, char);
209 NETBSD32TO64_UAP(count);
210 NETBSD32TOP_UAP(basep, long);
211
212 return compat_12_sys_getdirentries(l, &ua, retval);
213 }
214
215 static struct syscall_package compat_netbsd32_12_syscalls[] = {
216 { NETBSD32_SYS_compat_12_netbsd32_reboot, 0,
217 (sy_call_t *)compat_12_netbsd32_reboot },
218 { NETBSD32_SYS_compat_12_netbsd32_msync, 0,
219 (sy_call_t *)compat_12_netbsd32_msync },
220 { NETBSD32_SYS_compat_12_netbsd32_oswapon, 0,
221 (sy_call_t *)compat_12_netbsd32_oswapon },
222 { NETBSD32_SYS_compat_12_netbsd32_stat12, 0,
223 (sy_call_t *)compat_12_netbsd32_stat12 },
224 { NETBSD32_SYS_compat_12_netbsd32_fstat12, 0,
225 (sy_call_t *)compat_12_netbsd32_fstat12 },
226 { NETBSD32_SYS_compat_12_netbsd32_lstat12, 0,
227 (sy_call_t *)compat_12_netbsd32_lstat12 },
228 { NETBSD32_SYS_compat_12_netbsd32_getdirentries, 0,
229 (sy_call_t *)compat_12_netbsd32_getdirentries },
230 { 0, 0, NULL }
231 };
232
233 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_12, "compat_netbsd32_13,compat_12");
234
235 static int
compat_netbsd32_12_modcmd(modcmd_t cmd,void * arg)236 compat_netbsd32_12_modcmd(modcmd_t cmd, void *arg)
237 {
238
239 switch (cmd) {
240 case MODULE_CMD_INIT:
241 return syscall_establish(&emul_netbsd32,
242 compat_netbsd32_12_syscalls);
243
244 case MODULE_CMD_FINI:
245 return syscall_disestablish(&emul_netbsd32,
246 compat_netbsd32_12_syscalls);
247
248 default:
249 return ENOTTY;
250 }
251 }
252