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 *
| 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 *
|
41#include <compat/linux/linux_util.h>
42
43DUMMY(setfsuid16);
44DUMMY(setfsgid16);
45DUMMY(getresuid16);
46DUMMY(getresgid16);
47
48#define CAST_NOCHG(x) ((x == 0xFFFF) ? -1 : x)
49
50int
51linux_chown16(struct thread *td, struct linux_chown16_args *args)
52{
53 char *path;
54 int error;
55
56 LCONVPATHEXIST(td, args->path, &path);
57
58#ifdef DEBUG
59 if (ldebug(chown16))
60 printf(ARGS(chown16, "%s, %d, %d"), path, args->uid, args->gid);
61#endif
62 error = kern_chown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
63 CAST_NOCHG(args->gid));
64 LFREEPATH(path);
65 return (error);
66}
67
68int
69linux_lchown16(struct thread *td, struct linux_lchown16_args *args)
70{
71 char *path;
72 int error;
73
74 LCONVPATHEXIST(td, args->path, &path);
75
76#ifdef DEBUG
77 if (ldebug(lchown16))
78 printf(ARGS(lchown16, "%s, %d, %d"), path, args->uid,
79 args->gid);
80#endif
81 error = kern_lchown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
82 CAST_NOCHG(args->gid));
83 LFREEPATH(path);
84 return (error);
85}
86
87int
88linux_setgroups16(struct thread *td, struct linux_setgroups16_args *args)
89{
90 struct ucred *newcred, *oldcred;
91 l_gid16_t linux_gidset[NGROUPS];
92 gid_t *bsd_gidset;
93 int ngrp, error;
94 struct proc *p;
95
96#ifdef DEBUG
97 if (ldebug(setgroups16))
98 printf(ARGS(setgroups16, "%d, *"), args->gidsetsize);
99#endif
100
101 ngrp = args->gidsetsize;
102 if (ngrp >= NGROUPS)
103 return (EINVAL);
104 error = copyin((caddr_t)args->gidset, linux_gidset,
105 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, (caddr_t)args->gidset,
184 ngrp * sizeof(l_gid16_t));
185 if (error)
186 return (error);
187
188 td->td_retval[0] = ngrp;
189 return (0);
190}
191
192/*
193 * The FreeBSD native getgid(2) and getuid(2) also modify td->td_retval[1]
194 * when COMPAT_43 or COMPAT_SUNOS is defined. This globbers registers that
195 * are assumed to be preserved. The following lightweight syscalls fixes
196 * this. See also linux_getpid(2), linux_getgid(2) and linux_getuid(2) in
197 * linux_misc.c
198 *
199 * linux_getgid16() - MP SAFE
200 * linux_getuid16() - MP SAFE
201 */
202
203int
204linux_getgid16(struct thread *td, struct linux_getgid16_args *args)
205{
206
207 td->td_retval[0] = td->td_ucred->cr_rgid;
208 return (0);
209}
210
211int
212linux_getuid16(struct thread *td, struct linux_getuid16_args *args)
213{
214
215 td->td_retval[0] = td->td_ucred->cr_ruid;
216 return (0);
217}
218
219int
220linux_getegid16(struct thread *td, struct linux_getegid16_args *args)
221{
222 struct getegid_args bsd;
223
224 return (getegid(td, &bsd));
225}
226
227int
228linux_geteuid16(struct thread *td, struct linux_geteuid16_args *args)
229{
230 struct geteuid_args bsd;
231
232 return (geteuid(td, &bsd));
233}
234
235int
236linux_setgid16(struct thread *td, struct linux_setgid16_args *args)
237{
238 struct setgid_args bsd;
239
240 bsd.gid = args->gid;
241 return (setgid(td, &bsd));
242}
243
244int
245linux_setuid16(struct thread *td, struct linux_setuid16_args *args)
246{
247 struct setuid_args bsd;
248
249 bsd.uid = args->uid;
250 return (setuid(td, &bsd));
251}
252
253int
254linux_setregid16(struct thread *td, struct linux_setregid16_args *args)
255{
256 struct setregid_args bsd;
257
258 bsd.rgid = CAST_NOCHG(args->rgid);
259 bsd.egid = CAST_NOCHG(args->egid);
260 return (setregid(td, &bsd));
261}
262
263int
264linux_setreuid16(struct thread *td, struct linux_setreuid16_args *args)
265{
266 struct setreuid_args bsd;
267
268 bsd.ruid = CAST_NOCHG(args->ruid);
269 bsd.euid = CAST_NOCHG(args->euid);
270 return (setreuid(td, &bsd));
271}
272
273int
274linux_setresgid16(struct thread *td, struct linux_setresgid16_args *args)
275{
276 struct setresgid_args bsd;
277
278 bsd.rgid = CAST_NOCHG(args->rgid);
279 bsd.egid = CAST_NOCHG(args->egid);
280 bsd.sgid = CAST_NOCHG(args->sgid);
281 return (setresgid(td, &bsd));
282}
283
284int
285linux_setresuid16(struct thread *td, struct linux_setresuid16_args *args)
286{
287 struct setresuid_args bsd;
288
289 bsd.ruid = CAST_NOCHG(args->ruid);
290 bsd.euid = CAST_NOCHG(args->euid);
291 bsd.suid = CAST_NOCHG(args->suid);
292 return (setresuid(td, &bsd));
293}
| 41#include <compat/linux/linux_util.h>
42
43DUMMY(setfsuid16);
44DUMMY(setfsgid16);
45DUMMY(getresuid16);
46DUMMY(getresgid16);
47
48#define CAST_NOCHG(x) ((x == 0xFFFF) ? -1 : x)
49
50int
51linux_chown16(struct thread *td, struct linux_chown16_args *args)
52{
53 char *path;
54 int error;
55
56 LCONVPATHEXIST(td, args->path, &path);
57
58#ifdef DEBUG
59 if (ldebug(chown16))
60 printf(ARGS(chown16, "%s, %d, %d"), path, args->uid, args->gid);
61#endif
62 error = kern_chown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
63 CAST_NOCHG(args->gid));
64 LFREEPATH(path);
65 return (error);
66}
67
68int
69linux_lchown16(struct thread *td, struct linux_lchown16_args *args)
70{
71 char *path;
72 int error;
73
74 LCONVPATHEXIST(td, args->path, &path);
75
76#ifdef DEBUG
77 if (ldebug(lchown16))
78 printf(ARGS(lchown16, "%s, %d, %d"), path, args->uid,
79 args->gid);
80#endif
81 error = kern_lchown(td, path, UIO_SYSSPACE, CAST_NOCHG(args->uid),
82 CAST_NOCHG(args->gid));
83 LFREEPATH(path);
84 return (error);
85}
86
87int
88linux_setgroups16(struct thread *td, struct linux_setgroups16_args *args)
89{
90 struct ucred *newcred, *oldcred;
91 l_gid16_t linux_gidset[NGROUPS];
92 gid_t *bsd_gidset;
93 int ngrp, error;
94 struct proc *p;
95
96#ifdef DEBUG
97 if (ldebug(setgroups16))
98 printf(ARGS(setgroups16, "%d, *"), args->gidsetsize);
99#endif
100
101 ngrp = args->gidsetsize;
102 if (ngrp >= NGROUPS)
103 return (EINVAL);
104 error = copyin((caddr_t)args->gidset, linux_gidset,
105 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, (caddr_t)args->gidset,
184 ngrp * sizeof(l_gid16_t));
185 if (error)
186 return (error);
187
188 td->td_retval[0] = ngrp;
189 return (0);
190}
191
192/*
193 * The FreeBSD native getgid(2) and getuid(2) also modify td->td_retval[1]
194 * when COMPAT_43 or COMPAT_SUNOS is defined. This globbers registers that
195 * are assumed to be preserved. The following lightweight syscalls fixes
196 * this. See also linux_getpid(2), linux_getgid(2) and linux_getuid(2) in
197 * linux_misc.c
198 *
199 * linux_getgid16() - MP SAFE
200 * linux_getuid16() - MP SAFE
201 */
202
203int
204linux_getgid16(struct thread *td, struct linux_getgid16_args *args)
205{
206
207 td->td_retval[0] = td->td_ucred->cr_rgid;
208 return (0);
209}
210
211int
212linux_getuid16(struct thread *td, struct linux_getuid16_args *args)
213{
214
215 td->td_retval[0] = td->td_ucred->cr_ruid;
216 return (0);
217}
218
219int
220linux_getegid16(struct thread *td, struct linux_getegid16_args *args)
221{
222 struct getegid_args bsd;
223
224 return (getegid(td, &bsd));
225}
226
227int
228linux_geteuid16(struct thread *td, struct linux_geteuid16_args *args)
229{
230 struct geteuid_args bsd;
231
232 return (geteuid(td, &bsd));
233}
234
235int
236linux_setgid16(struct thread *td, struct linux_setgid16_args *args)
237{
238 struct setgid_args bsd;
239
240 bsd.gid = args->gid;
241 return (setgid(td, &bsd));
242}
243
244int
245linux_setuid16(struct thread *td, struct linux_setuid16_args *args)
246{
247 struct setuid_args bsd;
248
249 bsd.uid = args->uid;
250 return (setuid(td, &bsd));
251}
252
253int
254linux_setregid16(struct thread *td, struct linux_setregid16_args *args)
255{
256 struct setregid_args bsd;
257
258 bsd.rgid = CAST_NOCHG(args->rgid);
259 bsd.egid = CAST_NOCHG(args->egid);
260 return (setregid(td, &bsd));
261}
262
263int
264linux_setreuid16(struct thread *td, struct linux_setreuid16_args *args)
265{
266 struct setreuid_args bsd;
267
268 bsd.ruid = CAST_NOCHG(args->ruid);
269 bsd.euid = CAST_NOCHG(args->euid);
270 return (setreuid(td, &bsd));
271}
272
273int
274linux_setresgid16(struct thread *td, struct linux_setresgid16_args *args)
275{
276 struct setresgid_args bsd;
277
278 bsd.rgid = CAST_NOCHG(args->rgid);
279 bsd.egid = CAST_NOCHG(args->egid);
280 bsd.sgid = CAST_NOCHG(args->sgid);
281 return (setresgid(td, &bsd));
282}
283
284int
285linux_setresuid16(struct thread *td, struct linux_setresuid16_args *args)
286{
287 struct setresuid_args bsd;
288
289 bsd.ruid = CAST_NOCHG(args->ruid);
290 bsd.euid = CAST_NOCHG(args->euid);
291 bsd.suid = CAST_NOCHG(args->suid);
292 return (setresuid(td, &bsd));
293}
|