2 * Copyright (c) 2001 The FreeBSD Project
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/compat/linux/linux_uid16.c,v 1.4.2.1 2001/10/21 03:57:35 marcel Exp $
27 * $DragonFly: src/sys/emulation/linux/linux_uid16.c,v 1.11 2006/06/05 07:26:09 dillon Exp $
30 #include "opt_compat.h"
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kern_syscall.h>
35 #include <sys/nlookup.h>
37 #include <sys/sysproto.h>
38 #include <sys/thread.h>
40 #include <arch_linux/linux.h>
41 #include <arch_linux/linux_proto.h>
42 #include "linux_util.h"
49 #define CAST_NOCHG(x) ((x == 0xFFFF) ? -1 : x)
52 sys_linux_chown16(struct linux_chown16_args *args)
54 struct nlookupdata nd;
58 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
63 printf(ARGS(chown16, "%s, %d, %d"), path, args->uid,
66 error = nlookup_init(&nd, path, UIO_SYSSPACE, NLC_FOLLOW);
68 error = kern_chown(&nd, CAST_NOCHG(args->uid),
69 CAST_NOCHG(args->gid));
72 linux_free_path(&path);
77 sys_linux_lchown16(struct linux_lchown16_args *args)
79 struct nlookupdata nd;
83 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
88 printf(ARGS(lchown16, "%s, %d, %d"), path, args->uid,
91 error = nlookup_init(&nd, path, UIO_SYSSPACE, 0);
93 error = kern_chown(&nd, CAST_NOCHG(args->uid),
94 CAST_NOCHG(args->gid));
97 linux_free_path(&path);
102 sys_linux_setgroups16(struct linux_setgroups16_args *args)
104 struct proc *p = curproc;
105 struct ucred *newcred, *oldcred;
106 l_gid16_t linux_gidset[NGROUPS];
111 if (ldebug(setgroups16))
112 printf(ARGS(setgroups16, "%d, *"), args->gidsetsize);
115 ngrp = args->gidsetsize;
116 oldcred = p->p_ucred;
119 * cr_groups[0] holds egid. Setting the whole set from
120 * the supplied set will cause egid to be changed too.
121 * Keep cr_groups[0] unchanged to prevent that.
124 if ((error = suser_cred(oldcred, PRISON_ROOT)) != 0)
130 newcred = crdup(oldcred);
132 error = copyin((caddr_t)args->gidset, linux_gidset,
133 ngrp * sizeof(l_gid16_t));
137 newcred->cr_ngroups = ngrp + 1;
139 bsd_gidset = newcred->cr_groups;
142 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
147 newcred->cr_ngroups = 1;
150 p->p_ucred = newcred;
156 sys_linux_getgroups16(struct linux_getgroups16_args *args)
158 struct proc *p = curproc;
160 l_gid16_t linux_gidset[NGROUPS];
162 int bsd_gidsetsz, ngrp, error;
165 if (ldebug(getgroups16))
166 printf(ARGS(getgroups16, "%d, *"), args->gidsetsize);
170 bsd_gidset = cred->cr_groups;
171 bsd_gidsetsz = cred->cr_ngroups - 1;
174 * cr_groups[0] holds egid. Returning the whole set
175 * here will cause a duplicate. Exclude cr_groups[0]
179 if ((ngrp = args->gidsetsize) == 0) {
180 args->sysmsg_result = bsd_gidsetsz;
184 if (ngrp < bsd_gidsetsz)
188 while (ngrp < bsd_gidsetsz) {
189 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
193 error = copyout(linux_gidset, (caddr_t)args->gidset,
194 ngrp * sizeof(l_gid16_t));
198 args->sysmsg_result = ngrp;
203 * The FreeBSD native getgid(2) and getuid(2) also modify p->p_retval[1]
204 * when COMPAT_43 or COMPAT_SUNOS is defined. This globbers registers that
205 * are assumed to be preserved. The following lightweight syscalls fixes
206 * this. See also linux_getpid(2), linux_getgid(2) and linux_getuid(2) in
209 * linux_getgid16() - MP SAFE
210 * linux_getuid16() - MP SAFE
214 sys_linux_getgid16(struct linux_getgid16_args *args)
216 struct proc *p = curproc;
218 args->sysmsg_result = p->p_ucred->cr_rgid;
223 sys_linux_getuid16(struct linux_getuid16_args *args)
225 struct proc *p = curproc;
227 args->sysmsg_result = p->p_ucred->cr_ruid;
232 sys_linux_getegid16(struct linux_getegid16_args *args)
234 struct getegid_args bsd;
237 bsd.sysmsg_result = 0;
239 error = sys_getegid(&bsd);
240 args->sysmsg_result = bsd.sysmsg_result;
245 sys_linux_geteuid16(struct linux_geteuid16_args *args)
247 struct geteuid_args bsd;
250 bsd.sysmsg_result = 0;
252 error = sys_geteuid(&bsd);
253 args->sysmsg_result = bsd.sysmsg_result;
258 sys_linux_setgid16(struct linux_setgid16_args *args)
260 struct setgid_args bsd;
264 bsd.sysmsg_result = 0;
266 error = sys_setgid(&bsd);
267 args->sysmsg_result = bsd.sysmsg_result;
272 sys_linux_setuid16(struct linux_setuid16_args *args)
274 struct setuid_args bsd;
278 bsd.sysmsg_result = 0;
280 error = sys_setuid(&bsd);
281 args->sysmsg_result = bsd.sysmsg_result;
286 sys_linux_setregid16(struct linux_setregid16_args *args)
288 struct setregid_args bsd;
291 bsd.rgid = CAST_NOCHG(args->rgid);
292 bsd.egid = CAST_NOCHG(args->egid);
293 bsd.sysmsg_result = 0;
295 error = sys_setregid(&bsd);
296 args->sysmsg_result = bsd.sysmsg_result;
301 sys_linux_setreuid16(struct linux_setreuid16_args *args)
303 struct setreuid_args bsd;
306 bsd.ruid = CAST_NOCHG(args->ruid);
307 bsd.euid = CAST_NOCHG(args->euid);
308 bsd.sysmsg_result = 0;
310 error = sys_setreuid(&bsd);
311 args->sysmsg_result = bsd.sysmsg_result;
316 sys_linux_setresgid16(struct linux_setresgid16_args *args)
318 struct setresgid_args bsd;
321 bsd.rgid = CAST_NOCHG(args->rgid);
322 bsd.egid = CAST_NOCHG(args->egid);
323 bsd.sgid = CAST_NOCHG(args->sgid);
324 bsd.sysmsg_result = 0;
326 error = sys_setresgid(&bsd);
327 args->sysmsg_result = bsd.sysmsg_result;
332 sys_linux_setresuid16(struct linux_setresuid16_args *args)
334 struct setresuid_args bsd;
337 bsd.ruid = CAST_NOCHG(args->ruid);
338 bsd.euid = CAST_NOCHG(args->euid);
339 bsd.suid = CAST_NOCHG(args->suid);
340 bsd.sysmsg_result = 0;
342 error = sys_setresuid(&bsd);
343 args->sysmsg_result = bsd.sysmsg_result;