1/*-
2 * Copyright (c) 2001 The FreeBSD Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2001 The FreeBSD Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
|
28__FBSDID("$FreeBSD: head/sys/compat/linux/linux_uid16.c 121302 2003-10-21 11:00:33Z tjr $");
| 28__FBSDID("$FreeBSD: head/sys/compat/linux/linux_uid16.c 130344 2004-06-11 11:16:26Z phk $");
|
29
30#include <sys/param.h>
31#include <sys/lock.h>
32#include <sys/malloc.h>
33#include <sys/mutex.h>
34#include <sys/proc.h>
35#include <sys/syscallsubr.h>
36#include <sys/sysproto.h>
37#include <sys/systm.h>
38
39#include <machine/../linux/linux.h>
40#include <machine/../linux/linux_proto.h>
41
42#include <compat/linux/linux_util.h>
43
44DUMMY(setfsuid16);
45DUMMY(setfsgid16);
46DUMMY(getresuid16);
47DUMMY(getresgid16);
48
49#define CAST_NOCHG(x) ((x == 0xFFFF) ? -1 : x)
50
51int
52linux_chown16(struct thread *td, struct linux_chown16_args *args)
53{
54 char *path;
55 int error;
56
57 LCONVPATHEXIST(td, args->path, &path);
58
59#ifdef DEBUG
60 if (ldebug(chown16))
61 printf(ARGS(chown16, "%s, %d, %d"), path, args->uid, args->gid);
62#endif
63 error = kern_chown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
64 CAST_NOCHG(args->gid));
65 LFREEPATH(path);
66 return (error);
67}
68
69int
70linux_lchown16(struct thread *td, struct linux_lchown16_args *args)
71{
72 char *path;
73 int error;
74
75 LCONVPATHEXIST(td, args->path, &path);
76
77#ifdef DEBUG
78 if (ldebug(lchown16))
79 printf(ARGS(lchown16, "%s, %d, %d"), path, args->uid,
80 args->gid);
81#endif
82 error = kern_lchown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
83 CAST_NOCHG(args->gid));
84 LFREEPATH(path);
85 return (error);
86}
87
88int
89linux_setgroups16(struct thread *td, struct linux_setgroups16_args *args)
90{
91 struct ucred *newcred, *oldcred;
92 l_gid16_t linux_gidset[NGROUPS];
93 gid_t *bsd_gidset;
94 int ngrp, error;
95 struct proc *p;
96
97#ifdef DEBUG
98 if (ldebug(setgroups16))
99 printf(ARGS(setgroups16, "%d, *"), args->gidsetsize);
100#endif
101
102 ngrp = args->gidsetsize;
103 if (ngrp < 0 || ngrp >= NGROUPS)
104 return (EINVAL);
105 error = copyin(args->gidset, linux_gidset, ngrp * sizeof(l_gid16_t));
106 if (error)
107 return (error);
108 newcred = crget();
109 p = td->td_proc;
110 PROC_LOCK(p);
111 oldcred = p->p_ucred;
112
113 /*
114 * cr_groups[0] holds egid. Setting the whole set from
115 * the supplied set will cause egid to be changed too.
116 * Keep cr_groups[0] unchanged to prevent that.
117 */
118
119 if ((error = suser_cred(oldcred, PRISON_ROOT)) != 0) {
120 PROC_UNLOCK(p);
121 crfree(newcred);
122 return (error);
123 }
124
125 crcopy(newcred, oldcred);
126 if (ngrp > 0) {
127 newcred->cr_ngroups = ngrp + 1;
128
129 bsd_gidset = newcred->cr_groups;
130 ngrp--;
131 while (ngrp >= 0) {
132 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
133 ngrp--;
134 }
135 }
136 else
137 newcred->cr_ngroups = 1;
138
139 setsugid(td->td_proc);
140 p->p_ucred = newcred;
141 PROC_UNLOCK(p);
142 crfree(oldcred);
143 return (0);
144}
145
146int
147linux_getgroups16(struct thread *td, struct linux_getgroups16_args *args)
148{
149 struct ucred *cred;
150 l_gid16_t linux_gidset[NGROUPS];
151 gid_t *bsd_gidset;
152 int bsd_gidsetsz, ngrp, error;
153
154#ifdef DEBUG
155 if (ldebug(getgroups16))
156 printf(ARGS(getgroups16, "%d, *"), args->gidsetsize);
157#endif
158
159 cred = td->td_ucred;
160 bsd_gidset = cred->cr_groups;
161 bsd_gidsetsz = cred->cr_ngroups - 1;
162
163 /*
164 * cr_groups[0] holds egid. Returning the whole set
165 * here will cause a duplicate. Exclude cr_groups[0]
166 * to prevent that.
167 */
168
169 if ((ngrp = args->gidsetsize) == 0) {
170 td->td_retval[0] = bsd_gidsetsz;
171 return (0);
172 }
173
174 if (ngrp < bsd_gidsetsz)
175 return (EINVAL);
176
177 ngrp = 0;
178 while (ngrp < bsd_gidsetsz) {
179 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
180 ngrp++;
181 }
182
183 error = copyout(linux_gidset, args->gidset, ngrp * sizeof(l_gid16_t));
184 if (error)
185 return (error);
186
187 td->td_retval[0] = ngrp;
188 return (0);
189}
190
191/*
192 * The FreeBSD native getgid(2) and getuid(2) also modify td->td_retval[1]
| 29
30#include <sys/param.h>
31#include <sys/lock.h>
32#include <sys/malloc.h>
33#include <sys/mutex.h>
34#include <sys/proc.h>
35#include <sys/syscallsubr.h>
36#include <sys/sysproto.h>
37#include <sys/systm.h>
38
39#include <machine/../linux/linux.h>
40#include <machine/../linux/linux_proto.h>
41
42#include <compat/linux/linux_util.h>
43
44DUMMY(setfsuid16);
45DUMMY(setfsgid16);
46DUMMY(getresuid16);
47DUMMY(getresgid16);
48
49#define CAST_NOCHG(x) ((x == 0xFFFF) ? -1 : x)
50
51int
52linux_chown16(struct thread *td, struct linux_chown16_args *args)
53{
54 char *path;
55 int error;
56
57 LCONVPATHEXIST(td, args->path, &path);
58
59#ifdef DEBUG
60 if (ldebug(chown16))
61 printf(ARGS(chown16, "%s, %d, %d"), path, args->uid, args->gid);
62#endif
63 error = kern_chown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
64 CAST_NOCHG(args->gid));
65 LFREEPATH(path);
66 return (error);
67}
68
69int
70linux_lchown16(struct thread *td, struct linux_lchown16_args *args)
71{
72 char *path;
73 int error;
74
75 LCONVPATHEXIST(td, args->path, &path);
76
77#ifdef DEBUG
78 if (ldebug(lchown16))
79 printf(ARGS(lchown16, "%s, %d, %d"), path, args->uid,
80 args->gid);
81#endif
82 error = kern_lchown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
83 CAST_NOCHG(args->gid));
84 LFREEPATH(path);
85 return (error);
86}
87
88int
89linux_setgroups16(struct thread *td, struct linux_setgroups16_args *args)
90{
91 struct ucred *newcred, *oldcred;
92 l_gid16_t linux_gidset[NGROUPS];
93 gid_t *bsd_gidset;
94 int ngrp, error;
95 struct proc *p;
96
97#ifdef DEBUG
98 if (ldebug(setgroups16))
99 printf(ARGS(setgroups16, "%d, *"), args->gidsetsize);
100#endif
101
102 ngrp = args->gidsetsize;
103 if (ngrp < 0 || ngrp >= NGROUPS)
104 return (EINVAL);
105 error = copyin(args->gidset, linux_gidset, ngrp * sizeof(l_gid16_t));
106 if (error)
107 return (error);
108 newcred = crget();
109 p = td->td_proc;
110 PROC_LOCK(p);
111 oldcred = p->p_ucred;
112
113 /*
114 * cr_groups[0] holds egid. Setting the whole set from
115 * the supplied set will cause egid to be changed too.
116 * Keep cr_groups[0] unchanged to prevent that.
117 */
118
119 if ((error = suser_cred(oldcred, PRISON_ROOT)) != 0) {
120 PROC_UNLOCK(p);
121 crfree(newcred);
122 return (error);
123 }
124
125 crcopy(newcred, oldcred);
126 if (ngrp > 0) {
127 newcred->cr_ngroups = ngrp + 1;
128
129 bsd_gidset = newcred->cr_groups;
130 ngrp--;
131 while (ngrp >= 0) {
132 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
133 ngrp--;
134 }
135 }
136 else
137 newcred->cr_ngroups = 1;
138
139 setsugid(td->td_proc);
140 p->p_ucred = newcred;
141 PROC_UNLOCK(p);
142 crfree(oldcred);
143 return (0);
144}
145
146int
147linux_getgroups16(struct thread *td, struct linux_getgroups16_args *args)
148{
149 struct ucred *cred;
150 l_gid16_t linux_gidset[NGROUPS];
151 gid_t *bsd_gidset;
152 int bsd_gidsetsz, ngrp, error;
153
154#ifdef DEBUG
155 if (ldebug(getgroups16))
156 printf(ARGS(getgroups16, "%d, *"), args->gidsetsize);
157#endif
158
159 cred = td->td_ucred;
160 bsd_gidset = cred->cr_groups;
161 bsd_gidsetsz = cred->cr_ngroups - 1;
162
163 /*
164 * cr_groups[0] holds egid. Returning the whole set
165 * here will cause a duplicate. Exclude cr_groups[0]
166 * to prevent that.
167 */
168
169 if ((ngrp = args->gidsetsize) == 0) {
170 td->td_retval[0] = bsd_gidsetsz;
171 return (0);
172 }
173
174 if (ngrp < bsd_gidsetsz)
175 return (EINVAL);
176
177 ngrp = 0;
178 while (ngrp < bsd_gidsetsz) {
179 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
180 ngrp++;
181 }
182
183 error = copyout(linux_gidset, args->gidset, ngrp * sizeof(l_gid16_t));
184 if (error)
185 return (error);
186
187 td->td_retval[0] = ngrp;
188 return (0);
189}
190
191/*
192 * The FreeBSD native getgid(2) and getuid(2) also modify td->td_retval[1]
|
193 * when COMPAT_43 or COMPAT_SUNOS is defined. This globbers registers that
| 193 * when COMPAT_43 is defined. This globbers registers that
|
194 * are assumed to be preserved. The following lightweight syscalls fixes
195 * this. See also linux_getpid(2), linux_getgid(2) and linux_getuid(2) in
196 * linux_misc.c
197 *
198 * linux_getgid16() - MP SAFE
199 * linux_getuid16() - MP SAFE
200 */
201
202int
203linux_getgid16(struct thread *td, struct linux_getgid16_args *args)
204{
205
206 td->td_retval[0] = td->td_ucred->cr_rgid;
207 return (0);
208}
209
210int
211linux_getuid16(struct thread *td, struct linux_getuid16_args *args)
212{
213
214 td->td_retval[0] = td->td_ucred->cr_ruid;
215 return (0);
216}
217
218int
219linux_getegid16(struct thread *td, struct linux_getegid16_args *args)
220{
221 struct getegid_args bsd;
222
223 return (getegid(td, &bsd));
224}
225
226int
227linux_geteuid16(struct thread *td, struct linux_geteuid16_args *args)
228{
229 struct geteuid_args bsd;
230
231 return (geteuid(td, &bsd));
232}
233
234int
235linux_setgid16(struct thread *td, struct linux_setgid16_args *args)
236{
237 struct setgid_args bsd;
238
239 bsd.gid = args->gid;
240 return (setgid(td, &bsd));
241}
242
243int
244linux_setuid16(struct thread *td, struct linux_setuid16_args *args)
245{
246 struct setuid_args bsd;
247
248 bsd.uid = args->uid;
249 return (setuid(td, &bsd));
250}
251
252int
253linux_setregid16(struct thread *td, struct linux_setregid16_args *args)
254{
255 struct setregid_args bsd;
256
257 bsd.rgid = CAST_NOCHG(args->rgid);
258 bsd.egid = CAST_NOCHG(args->egid);
259 return (setregid(td, &bsd));
260}
261
262int
263linux_setreuid16(struct thread *td, struct linux_setreuid16_args *args)
264{
265 struct setreuid_args bsd;
266
267 bsd.ruid = CAST_NOCHG(args->ruid);
268 bsd.euid = CAST_NOCHG(args->euid);
269 return (setreuid(td, &bsd));
270}
271
272int
273linux_setresgid16(struct thread *td, struct linux_setresgid16_args *args)
274{
275 struct setresgid_args bsd;
276
277 bsd.rgid = CAST_NOCHG(args->rgid);
278 bsd.egid = CAST_NOCHG(args->egid);
279 bsd.sgid = CAST_NOCHG(args->sgid);
280 return (setresgid(td, &bsd));
281}
282
283int
284linux_setresuid16(struct thread *td, struct linux_setresuid16_args *args)
285{
286 struct setresuid_args bsd;
287
288 bsd.ruid = CAST_NOCHG(args->ruid);
289 bsd.euid = CAST_NOCHG(args->euid);
290 bsd.suid = CAST_NOCHG(args->suid);
291 return (setresuid(td, &bsd));
292}
| 194 * are assumed to be preserved. The following lightweight syscalls fixes
195 * this. See also linux_getpid(2), linux_getgid(2) and linux_getuid(2) in
196 * linux_misc.c
197 *
198 * linux_getgid16() - MP SAFE
199 * linux_getuid16() - MP SAFE
200 */
201
202int
203linux_getgid16(struct thread *td, struct linux_getgid16_args *args)
204{
205
206 td->td_retval[0] = td->td_ucred->cr_rgid;
207 return (0);
208}
209
210int
211linux_getuid16(struct thread *td, struct linux_getuid16_args *args)
212{
213
214 td->td_retval[0] = td->td_ucred->cr_ruid;
215 return (0);
216}
217
218int
219linux_getegid16(struct thread *td, struct linux_getegid16_args *args)
220{
221 struct getegid_args bsd;
222
223 return (getegid(td, &bsd));
224}
225
226int
227linux_geteuid16(struct thread *td, struct linux_geteuid16_args *args)
228{
229 struct geteuid_args bsd;
230
231 return (geteuid(td, &bsd));
232}
233
234int
235linux_setgid16(struct thread *td, struct linux_setgid16_args *args)
236{
237 struct setgid_args bsd;
238
239 bsd.gid = args->gid;
240 return (setgid(td, &bsd));
241}
242
243int
244linux_setuid16(struct thread *td, struct linux_setuid16_args *args)
245{
246 struct setuid_args bsd;
247
248 bsd.uid = args->uid;
249 return (setuid(td, &bsd));
250}
251
252int
253linux_setregid16(struct thread *td, struct linux_setregid16_args *args)
254{
255 struct setregid_args bsd;
256
257 bsd.rgid = CAST_NOCHG(args->rgid);
258 bsd.egid = CAST_NOCHG(args->egid);
259 return (setregid(td, &bsd));
260}
261
262int
263linux_setreuid16(struct thread *td, struct linux_setreuid16_args *args)
264{
265 struct setreuid_args bsd;
266
267 bsd.ruid = CAST_NOCHG(args->ruid);
268 bsd.euid = CAST_NOCHG(args->euid);
269 return (setreuid(td, &bsd));
270}
271
272int
273linux_setresgid16(struct thread *td, struct linux_setresgid16_args *args)
274{
275 struct setresgid_args bsd;
276
277 bsd.rgid = CAST_NOCHG(args->rgid);
278 bsd.egid = CAST_NOCHG(args->egid);
279 bsd.sgid = CAST_NOCHG(args->sgid);
280 return (setresgid(td, &bsd));
281}
282
283int
284linux_setresuid16(struct thread *td, struct linux_setresuid16_args *args)
285{
286 struct setresuid_args bsd;
287
288 bsd.ruid = CAST_NOCHG(args->ruid);
289 bsd.euid = CAST_NOCHG(args->euid);
290 bsd.suid = CAST_NOCHG(args->suid);
291 return (setresuid(td, &bsd));
292}
|