1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright 2016 Joyent, Inc.
25 */
26
27 #include <sys/errno.h>
28 #include <sys/exec.h>
29 #include <sys/kmem.h>
30 #include <sys/modctl.h>
31 #include <sys/model.h>
32 #include <sys/proc.h>
33 #include <sys/syscall.h>
34 #include <sys/systm.h>
35 #include <sys/thread.h>
36 #include <sys/cmn_err.h>
37 #include <sys/archsystm.h>
38 #include <sys/pathname.h>
39
40 #include <sys/machbrand.h>
41 #include <sys/brand.h>
42 #include "sn1_brand.h"
43
44 char *sn1_emulation_table = NULL;
45
46 void sn1_init_brand_data(zone_t *, kmutex_t *);
47 void sn1_free_brand_data(zone_t *);
48 void sn1_setbrand(proc_t *);
49 int sn1_getattr(zone_t *, int, void *, size_t *);
50 int sn1_setattr(zone_t *, int, void *, size_t);
51 int sn1_brandsys(int, int64_t *, uintptr_t, uintptr_t, uintptr_t,
52 uintptr_t);
53 void sn1_copy_procdata(proc_t *, proc_t *);
54 void sn1_proc_exit(struct proc *);
55 void sn1_exec();
56 void sn1_initlwp(klwp_t *, void *);
57 void sn1_forklwp(klwp_t *, klwp_t *);
58 void sn1_freelwp(klwp_t *);
59 void sn1_lwpexit(klwp_t *);
60 int sn1_elfexec(vnode_t *, execa_t *, uarg_t *, intpdata_t *, int,
61 long *, int, caddr_t, cred_t *, int *);
62
63 /* sn1 brand */
64 struct brand_ops sn1_brops = {
65 sn1_init_brand_data, /* b_init_brand_data */
66 sn1_free_brand_data, /* b_free_brand_data */
67 sn1_brandsys, /* b_brandsys */
68 sn1_setbrand, /* b_setbrand */
69 sn1_getattr, /* b_getattr */
70 sn1_setattr, /* b_setattr */
71 sn1_copy_procdata, /* b_copy_procdata */
72 sn1_proc_exit, /* b_proc_exit */
73 sn1_exec, /* b_exec */
74 lwp_setrval, /* b_lwp_setrval */
75 NULL, /* b_lwpdata_alloc */
76 NULL, /* b_lwpdata_free */
77 sn1_initlwp, /* b_initlwp */
78 NULL, /* b_initlwp_post */
79 sn1_forklwp, /* b_forklwp */
80 sn1_freelwp, /* b_freelwp */
81 sn1_lwpexit, /* b_lwpexit */
82 sn1_elfexec, /* b_elfexec */
83 NULL, /* b_sigset_native_to_brand */
84 NULL, /* b_sigset_brand_to_native */
85 NULL, /* b_sigfd_translate */
86 NSIG, /* b_nsig */
87 NULL, /* b_exit_with_sig */
88 NULL, /* b_wait_filter */
89 NULL, /* b_native_exec */
90 NULL, /* b_map32limit */
91 NULL, /* b_stop_notify */
92 NULL, /* b_waitid_helper */
93 NULL, /* b_sigcld_repost */
94 NULL, /* b_issig_stop */
95 NULL, /* b_sig_ignorable */
96 NULL, /* b_savecontext */
97 #if defined(_SYSCALL32_IMPL)
98 NULL, /* b_savecontext32 */
99 #endif
100 NULL, /* b_restorecontext */
101 NULL, /* b_sendsig_stack */
102 NULL, /* b_sendsig */
103 NULL, /* b_setid_clear */
104 NULL, /* b_pagefault */
105 B_TRUE /* b_intp_parse_arg */
106 };
107
108 #ifdef sparc
109
110 struct brand_mach_ops sn1_mops = {
111 sn1_brand_syscall_callback,
112 sn1_brand_syscall32_callback
113 };
114
115 #else /* sparc */
116
117 #ifdef __amd64
118
119 struct brand_mach_ops sn1_mops = {
120 sn1_brand_sysenter_callback,
121 NULL,
122 sn1_brand_int91_callback,
123 sn1_brand_syscall_callback,
124 sn1_brand_syscall32_callback,
125 NULL,
126 NULL
127 };
128
129 #else /* ! __amd64 */
130
131 struct brand_mach_ops sn1_mops = {
132 sn1_brand_sysenter_callback,
133 NULL,
134 NULL,
135 sn1_brand_syscall_callback,
136 NULL,
137 NULL,
138 NULL
139 };
140 #endif /* __amd64 */
141
142 #endif /* _sparc */
143
144 struct brand sn1_brand = {
145 BRAND_VER_1,
146 "sn1",
147 &sn1_brops,
148 &sn1_mops,
149 sizeof (brand_proc_data_t),
150 };
151
152 static struct modlbrand modlbrand = {
153 &mod_brandops, /* type of module */
154 "Solaris N-1 Brand", /* description of module */
155 &sn1_brand /* driver ops */
156 };
157
158 static struct modlinkage modlinkage = {
159 MODREV_1, (void *)&modlbrand, NULL
160 };
161
162 void
163 sn1_setbrand(proc_t *p)
164 {
165 brand_solaris_setbrand(p, &sn1_brand);
166 }
167
168 /* ARGSUSED */
169 int
170 sn1_getattr(zone_t *zone, int attr, void *buf, size_t *bufsize)
171 {
172 return (EINVAL);
173 }
174
175 /* ARGSUSED */
176 int
177 sn1_setattr(zone_t *zone, int attr, void *buf, size_t bufsize)
178 {
179 return (EINVAL);
180 }
181
182 /* ARGSUSED5 */
183 int
184 sn1_brandsys(int cmd, int64_t *rval, uintptr_t arg1, uintptr_t arg2,
185 uintptr_t arg3, uintptr_t arg4)
186 {
187 int res;
188
189 *rval = 0;
190
191 res = brand_solaris_cmd(cmd, arg1, arg2, arg3, &sn1_brand, SN1_VERSION);
192 if (res >= 0)
193 return (res);
194
195 return (EINVAL);
196 }
197
198 void
199 sn1_copy_procdata(proc_t *child, proc_t *parent)
200 {
201 brand_solaris_copy_procdata(child, parent, &sn1_brand);
202 }
203
204 void
205 sn1_proc_exit(struct proc *p)
206 {
207 brand_solaris_proc_exit(p, &sn1_brand);
208 }
209
210 void
211 sn1_exec()
212 {
213 brand_solaris_exec(&sn1_brand);
214 }
215
216 void
217 sn1_initlwp(klwp_t *l, void *bd)
218 {
219 brand_solaris_initlwp(l, &sn1_brand);
220 }
221
222 void
223 sn1_forklwp(klwp_t *p, klwp_t *c)
224 {
225 brand_solaris_forklwp(p, c, &sn1_brand);
226 }
227
228 void
229 sn1_freelwp(klwp_t *l)
230 {
231 brand_solaris_freelwp(l, &sn1_brand);
232 }
233
234 void
235 sn1_lwpexit(klwp_t *l)
236 {
237 brand_solaris_lwpexit(l, &sn1_brand);
238 }
239
240 /*ARGSUSED*/
241 void
242 sn1_free_brand_data(zone_t *zone)
243 {
244 }
245
246 /*ARGSUSED*/
247 void
248 sn1_init_brand_data(zone_t *zone, kmutex_t *zsl)
249 {
250 }
251
252 int
253 sn1_elfexec(vnode_t *vp, execa_t *uap, uarg_t *args, intpdata_t *idatap,
254 int level, long *execsz, int setid, caddr_t exec_file, cred_t *cred,
255 int *brand_action)
256 {
257 return (brand_solaris_elfexec(vp, uap, args, idatap, level, execsz,
258 setid, exec_file, cred, brand_action, &sn1_brand, SN1_BRANDNAME,
259 SN1_LIB, SN1_LIB32));
260 }
261
262 int
263 _init(void)
264 {
265 int err;
266
267 /*
268 * Set up the table indicating which system calls we want to
269 * interpose on. We should probably build this automatically from
270 * a list of system calls that is shared with the user-space
271 * library.
272 */
273 sn1_emulation_table = kmem_zalloc(NSYSCALL, KM_SLEEP);
274 sn1_emulation_table[SYS_read] = 1; /* 3 */
275 sn1_emulation_table[SYS_write] = 1; /* 4 */
276 sn1_emulation_table[SYS_time] = 1; /* 13 */
277 sn1_emulation_table[SYS_getpid] = 1; /* 20 */
278 sn1_emulation_table[SYS_mount] = 1; /* 21 */
279 sn1_emulation_table[SYS_getuid] = 1; /* 24 */
280 sn1_emulation_table[SYS_times] = 1; /* 43 */
281 sn1_emulation_table[SYS_getgid] = 1; /* 47 */
282 sn1_emulation_table[SYS_utssys] = 1; /* 57 */
283 sn1_emulation_table[SYS_waitid] = 1; /* 107 */
284 sn1_emulation_table[SYS_uname] = 1; /* 135 */
285
286 err = mod_install(&modlinkage);
287 if (err) {
288 cmn_err(CE_WARN, "Couldn't install brand module");
289 kmem_free(sn1_emulation_table, NSYSCALL);
290 }
291
292 return (err);
293 }
294
295 int
296 _info(struct modinfo *modinfop)
297 {
298 return (mod_info(&modlinkage, modinfop));
299 }
300
301 int
302 _fini(void)
303 {
304 return (brand_solaris_fini(&sn1_emulation_table, &modlinkage,
305 &sn1_brand));
306 }