1 | /* $NetBSD: linux32_uid16.c,v 1.2 2008/11/19 18:36:04 ad Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. |
5 | * Copyright (c) 2008 Nicolas Joly, 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 | * 3. All advertising materials mentioning features or use of this software |
16 | * must display the following acknowledgement: |
17 | * This product includes software developed by Emmanuel Dreyfus |
18 | * 4. The name of the author may not be used to endorse or promote |
19 | * products derived from this software without specific prior written |
20 | * permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' |
23 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
24 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
25 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS |
26 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
30 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
31 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
32 | * POSSIBILITY OF SUCH DAMAGE. |
33 | */ |
34 | |
35 | #include <sys/cdefs.h> |
36 | __KERNEL_RCSID(0, "$NetBSD: linux32_uid16.c,v 1.2 2008/11/19 18:36:04 ad Exp $" ); |
37 | |
38 | #include <sys/param.h> |
39 | #include <sys/proc.h> |
40 | #include <sys/kauth.h> |
41 | |
42 | #include <compat/netbsd32/netbsd32.h> |
43 | |
44 | #include <compat/linux/common/linux_types.h> |
45 | #include <compat/linux/common/linux_signal.h> |
46 | #include <compat/linux/common/linux_ipc.h> |
47 | #include <compat/linux/common/linux_sem.h> |
48 | #include <compat/linux/linux_syscallargs.h> |
49 | |
50 | #include <compat/linux32/common/linux32_types.h> |
51 | #include <compat/linux32/common/linux32_signal.h> |
52 | #include <compat/linux32/common/linux32_machdep.h> |
53 | #include <compat/linux32/linux32_syscallargs.h> |
54 | |
55 | #define LINUX32TOBSD_UID(u) \ |
56 | (((u) == (linux32_uid16_t)-1) ? -1 : (u)) |
57 | #define LINUX32TOBSD_GID(g) \ |
58 | (((g) == (linux32_gid16_t)-1) ? -1 : (g)) |
59 | |
60 | #define BSDTOLINUX32_UID(u) \ |
61 | (((u) & ~0xffff) ? (linux32_uid16_t)65534 : (linux32_uid16_t)(u)) |
62 | #define BSDTOLINUX32_GID(g) \ |
63 | (((g) & ~0xffff) ? (linux32_gid16_t)65534 : (linux32_gid16_t)(g)) |
64 | |
65 | int |
66 | linux32_sys_chown16(struct lwp *l, const struct linux32_sys_chown16_args *uap, register_t *retval) |
67 | { |
68 | /* { |
69 | syscallarg(const netbsd32_charp) path; |
70 | syscallarg(linux32_uid16_t) uid; |
71 | syscallarg(linux32_gid16_t) gid; |
72 | } */ |
73 | struct sys___posix_chown_args ua; |
74 | |
75 | NETBSD32TOP_UAP(path, const char); |
76 | SCARG(&ua, uid) = LINUX32TOBSD_UID(SCARG(uap, uid)); |
77 | SCARG(&ua, gid) = LINUX32TOBSD_GID(SCARG(uap, gid)); |
78 | |
79 | return sys___posix_chown(l, &ua, retval); |
80 | } |
81 | |
82 | int |
83 | linux32_sys_lchown16(struct lwp *l, const struct linux32_sys_lchown16_args *uap, register_t *retval) |
84 | { |
85 | /* { |
86 | syscallarg(const netbsd32_charp) path; |
87 | syscallarg(linux32_uid16_t) uid; |
88 | syscallarg(linux32_gid16_t) gid; |
89 | } */ |
90 | struct sys___posix_lchown_args ua; |
91 | |
92 | NETBSD32TOP_UAP(path, const char); |
93 | SCARG(&ua, uid) = LINUX32TOBSD_UID(SCARG(uap, uid)); |
94 | SCARG(&ua, gid) = LINUX32TOBSD_GID(SCARG(uap, gid)); |
95 | |
96 | return sys___posix_lchown(l, &ua, retval); |
97 | } |
98 | |
99 | int |
100 | linux32_sys_fchown16(struct lwp *l, const struct linux32_sys_fchown16_args *uap, register_t *retval) |
101 | { |
102 | /* { |
103 | syscallarg(int) fd; |
104 | syscallarg(linux32_uid16_t) uid; |
105 | syscallarg(linux32_gid16_t) gid; |
106 | } */ |
107 | struct sys___posix_fchown_args ua; |
108 | |
109 | SCARG(&ua, fd) = SCARG(uap, fd); |
110 | SCARG(&ua, uid) = LINUX32TOBSD_UID(SCARG(uap, uid)); |
111 | SCARG(&ua, gid) = LINUX32TOBSD_GID(SCARG(uap, gid)); |
112 | |
113 | return sys___posix_fchown(l, &ua, retval); |
114 | } |
115 | |
116 | int |
117 | linux32_sys_getgroups16(struct lwp *l, const struct linux32_sys_getgroups16_args *uap, register_t *retval) |
118 | { |
119 | /* { |
120 | syscallarg(int) gidsetsize; |
121 | syscallarg(linux32_gid16p_t) gidset; |
122 | } */ |
123 | struct linux_sys_getgroups16_args ua; |
124 | |
125 | NETBSD32TO64_UAP(gidsetsize); |
126 | NETBSD32TOP_UAP(gidset, linux_gid16_t); |
127 | |
128 | return linux_sys_getgroups16(l, &ua, retval); |
129 | } |
130 | |
131 | int |
132 | linux32_sys_setgroups16(struct lwp *l, const struct linux32_sys_setgroups16_args *uap, register_t *retval) |
133 | { |
134 | /* { |
135 | syscallarg(int) gidsetsize; |
136 | syscallarg(linux32_gid16p_t) gidset; |
137 | } */ |
138 | struct linux_sys_setgroups16_args ua; |
139 | |
140 | NETBSD32TO64_UAP(gidsetsize); |
141 | NETBSD32TOP_UAP(gidset, linux_gid16_t); |
142 | |
143 | return linux_sys_setgroups16(l, &ua, retval); |
144 | } |
145 | |
146 | int |
147 | linux32_sys_setreuid16(struct lwp *l, const struct linux32_sys_setreuid16_args *uap, register_t *retval) |
148 | { |
149 | /* { |
150 | syscallarg(linux32_uid16_t) ruid; |
151 | syscallarg(linux32_uid16_t) euid; |
152 | } */ |
153 | struct sys_setreuid_args bsa; |
154 | |
155 | SCARG(&bsa, ruid) = LINUX32TOBSD_UID(SCARG(uap, ruid)); |
156 | SCARG(&bsa, euid) = LINUX32TOBSD_UID(SCARG(uap, euid)); |
157 | |
158 | return sys_setreuid(l, &bsa, retval); |
159 | } |
160 | |
161 | int |
162 | linux32_sys_setregid16(struct lwp *l, const struct linux32_sys_setregid16_args *uap, register_t *retval) |
163 | { |
164 | /* { |
165 | syscallarg(linux32_gid16_t) rgid; |
166 | syscallarg(linux32_gid16_t) egid; |
167 | } */ |
168 | struct sys_setregid_args bsa; |
169 | |
170 | SCARG(&bsa, rgid) = LINUX32TOBSD_GID(SCARG(uap, rgid)); |
171 | SCARG(&bsa, egid) = LINUX32TOBSD_GID(SCARG(uap, egid)); |
172 | |
173 | return sys_setregid(l, &bsa, retval); |
174 | } |
175 | |
176 | int |
177 | linux32_sys_setresuid16(struct lwp *l, const struct linux32_sys_setresuid16_args *uap, register_t *retval) |
178 | { |
179 | /* { |
180 | syscallarg(linux32_uid16_t) ruid; |
181 | syscallarg(linux32_uid16_t) euid; |
182 | syscallarg(linux32_uid16_t) suid; |
183 | } */ |
184 | struct linux32_sys_setresuid_args lsa; |
185 | |
186 | SCARG(&lsa, ruid) = LINUX32TOBSD_UID(SCARG(uap, ruid)); |
187 | SCARG(&lsa, euid) = LINUX32TOBSD_UID(SCARG(uap, euid)); |
188 | SCARG(&lsa, suid) = LINUX32TOBSD_UID(SCARG(uap, suid)); |
189 | |
190 | return linux32_sys_setresuid(l, &lsa, retval); |
191 | } |
192 | |
193 | int |
194 | linux32_sys_setresgid16(struct lwp *l, const struct linux32_sys_setresgid16_args *uap, register_t *retval) |
195 | { |
196 | /* { |
197 | syscallarg(linux32_gid16_t) rgid; |
198 | syscallarg(linux32_gid16_t) egid; |
199 | syscallarg(linux32_gid16_t) sgid; |
200 | } */ |
201 | struct linux32_sys_setresgid_args lsa; |
202 | |
203 | SCARG(&lsa, rgid) = LINUX32TOBSD_GID(SCARG(uap, rgid)); |
204 | SCARG(&lsa, egid) = LINUX32TOBSD_GID(SCARG(uap, egid)); |
205 | SCARG(&lsa, sgid) = LINUX32TOBSD_GID(SCARG(uap, sgid)); |
206 | |
207 | return linux32_sys_setresgid(l, &lsa, retval); |
208 | } |
209 | |
210 | int |
211 | linux32_sys_getresuid16(struct lwp *l, const struct linux32_sys_getresuid16_args *uap, register_t *retval) |
212 | { |
213 | /* { |
214 | syscallarg(linux32_uid16p_t) ruid; |
215 | syscallarg(linux32_uid16p_t) euid; |
216 | syscallarg(linux32_uid16p_t) suid; |
217 | } */ |
218 | kauth_cred_t pc = l->l_cred; |
219 | int error; |
220 | uid_t buid; |
221 | linux32_uid16_t luid; |
222 | |
223 | buid = kauth_cred_getuid(pc); |
224 | luid = BSDTOLINUX32_UID(buid); |
225 | if ((error = copyout(&luid, SCARG_P32(uap, ruid), sizeof(luid))) != 0) |
226 | return error; |
227 | |
228 | buid = kauth_cred_geteuid(pc); |
229 | luid = BSDTOLINUX32_UID(buid); |
230 | if ((error = copyout(&luid, SCARG_P32(uap, euid), sizeof(luid))) != 0) |
231 | return error; |
232 | |
233 | buid = kauth_cred_getsvuid(pc); |
234 | luid = BSDTOLINUX32_UID(buid); |
235 | return (copyout(&luid, SCARG_P32(uap, suid), sizeof(luid))); |
236 | } |
237 | |
238 | int |
239 | linux32_sys_getresgid16(struct lwp *l, const struct linux32_sys_getresgid16_args *uap, register_t *retval) |
240 | { |
241 | /* { |
242 | syscallarg(linux32_gid16p_t) rgid; |
243 | syscallarg(linux32_gid16p_t) egid; |
244 | syscallarg(linux32_gid16p_t) sgid; |
245 | } */ |
246 | kauth_cred_t pc = l->l_cred; |
247 | int error; |
248 | gid_t bgid; |
249 | linux32_gid16_t lgid; |
250 | |
251 | bgid = kauth_cred_getgid(pc); |
252 | lgid = BSDTOLINUX32_GID(bgid); |
253 | if ((error = copyout(&lgid, SCARG_P32(uap, rgid), sizeof(lgid))) != 0) |
254 | return error; |
255 | |
256 | bgid = kauth_cred_getegid(pc); |
257 | lgid = BSDTOLINUX32_GID(bgid); |
258 | if ((error = copyout(&lgid, SCARG_P32(uap, egid), sizeof(lgid))) != 0) |
259 | return error; |
260 | |
261 | bgid = kauth_cred_getsvgid(pc); |
262 | lgid = BSDTOLINUX32_GID(bgid); |
263 | return (copyout(&lgid, SCARG_P32(uap, sgid), sizeof(lgid))); |
264 | } |
265 | |