1/*-
2 * Copyright (c) 2002 Doug Rabson
3 * Copyright (c) 2003 Peter Wemm
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2002 Doug Rabson
3 * Copyright (c) 2003 Peter Wemm
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
|
30
31#include "opt_compat.h"
32
33#define __ELF_WORD_SIZE 32
34
35#include <sys/param.h>
36#include <sys/exec.h>
37#include <sys/fcntl.h>
38#include <sys/imgact.h>
39#include <sys/kernel.h>
40#include <sys/lock.h>
41#include <sys/malloc.h>
42#include <sys/mutex.h>
43#include <sys/mman.h>
44#include <sys/namei.h>
45#include <sys/pioctl.h>
46#include <sys/proc.h>
47#include <sys/procfs.h>
48#include <sys/resourcevar.h>
49#include <sys/systm.h>
50#include <sys/signalvar.h>
51#include <sys/stat.h>
52#include <sys/sx.h>
53#include <sys/syscall.h>
54#include <sys/sysctl.h>
55#include <sys/sysent.h>
56#include <sys/vnode.h>
57#include <sys/imgact_elf.h>
58
59#include <vm/vm.h>
60#include <vm/vm_kern.h>
61#include <vm/vm_param.h>
62#include <vm/pmap.h>
63#include <vm/vm_map.h>
64#include <vm/vm_object.h>
65#include <vm/vm_extern.h>
66
67#include <compat/freebsd32/freebsd32_signal.h>
68#include <compat/freebsd32/freebsd32_util.h>
69#include <compat/freebsd32/freebsd32_proto.h>
70#include <compat/freebsd32/freebsd32_syscall.h>
71#include <compat/ia32/ia32_signal.h>
72#ifdef __amd64__
73#include <machine/psl.h>
74#include <machine/segments.h>
75#include <machine/specialreg.h>
76#else
77#include <i386/include/psl.h>
78#include <i386/include/segments.h>
79#include <i386/include/specialreg.h>
80#endif
81#include <machine/frame.h>
82#include <machine/md_var.h>
83#include <machine/pcb.h>
84#include <machine/cpufunc.h>
85
86CTASSERT(sizeof(struct ia32_mcontext) == 640);
87CTASSERT(sizeof(struct ia32_ucontext) == 704);
88CTASSERT(sizeof(struct ia32_sigframe) == 800);
89CTASSERT(sizeof(struct siginfo32) == 64);
90#ifdef COMPAT_FREEBSD4
91CTASSERT(sizeof(struct ia32_mcontext4) == 260);
92CTASSERT(sizeof(struct ia32_ucontext4) == 324);
93CTASSERT(sizeof(struct ia32_sigframe4) == 408);
94#endif
95
96static register_t *ia32_copyout_strings(struct image_params *imgp);
97static void ia32_fixlimit(struct rlimit *rl, int which);
98
99SYSCTL_NODE(_compat, OID_AUTO, ia32, CTLFLAG_RW, 0, "ia32 mode");
100
101static u_long ia32_maxdsiz = IA32_MAXDSIZ;
102SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxdsiz, CTLFLAG_RW, &ia32_maxdsiz, 0, "");
103TUNABLE_ULONG("compat.ia32.maxdsiz", &ia32_maxdsiz);
104static u_long ia32_maxssiz = IA32_MAXSSIZ;
105SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxssiz, CTLFLAG_RW, &ia32_maxssiz, 0, "");
106TUNABLE_ULONG("compat.ia32.maxssiz", &ia32_maxssiz);
107static u_long ia32_maxvmem = IA32_MAXVMEM;
108SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxvmem, CTLFLAG_RW, &ia32_maxvmem, 0, "");
109TUNABLE_ULONG("compat.ia32.maxvmem", &ia32_maxvmem);
110
111struct sysentvec ia32_freebsd_sysvec = {
112 .sv_size = FREEBSD32_SYS_MAXSYSCALL,
113 .sv_table = freebsd32_sysent,
114 .sv_mask = 0,
115 .sv_sigsize = 0,
116 .sv_sigtbl = NULL,
117 .sv_errsize = 0,
118 .sv_errtbl = NULL,
119 .sv_transtrap = NULL,
120 .sv_fixup = elf32_freebsd_fixup,
121 .sv_sendsig = ia32_sendsig,
122 .sv_sigcode = ia32_sigcode,
123 .sv_szsigcode = &sz_ia32_sigcode,
124 .sv_prepsyscall = NULL,
125 .sv_name = "FreeBSD ELF32",
126 .sv_coredump = elf32_coredump,
127 .sv_imgact_try = NULL,
128 .sv_minsigstksz = MINSIGSTKSZ,
129 .sv_pagesize = IA32_PAGE_SIZE,
130 .sv_minuser = 0,
131 .sv_maxuser = FREEBSD32_USRSTACK,
132 .sv_usrstack = FREEBSD32_USRSTACK,
133 .sv_psstrings = FREEBSD32_PS_STRINGS,
134 .sv_stackprot = VM_PROT_ALL,
135 .sv_copyout_strings = ia32_copyout_strings,
136 .sv_setregs = ia32_setregs,
137 .sv_fixlimit = ia32_fixlimit,
138 .sv_maxssiz = &ia32_maxssiz,
139 .sv_flags = SV_ABI_FREEBSD | SV_IA32 | SV_ILP32
140};
141
142
143static Elf32_Brandinfo ia32_brand_info = {
144 .brand = ELFOSABI_FREEBSD,
145 .machine = EM_386,
146 .compat_3_brand = "FreeBSD",
147 .emul_path = NULL,
148 .interp_path = "/libexec/ld-elf.so.1",
149 .sysvec = &ia32_freebsd_sysvec,
150 .interp_newpath = "/libexec/ld-elf32.so.1",
151 .brand_note = &elf32_freebsd_brandnote,
152 .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE
153};
154
155SYSINIT(ia32, SI_SUB_EXEC, SI_ORDER_ANY,
156 (sysinit_cfunc_t) elf32_insert_brand_entry,
157 &ia32_brand_info);
158
159static Elf32_Brandinfo ia32_brand_oinfo = {
160 .brand = ELFOSABI_FREEBSD,
161 .machine = EM_386,
162 .compat_3_brand = "FreeBSD",
163 .emul_path = NULL,
164 .interp_path = "/usr/libexec/ld-elf.so.1",
165 .sysvec = &ia32_freebsd_sysvec,
166 .interp_newpath = "/libexec/ld-elf32.so.1",
167 .brand_note = &elf32_freebsd_brandnote,
168 .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE
169};
170
171SYSINIT(oia32, SI_SUB_EXEC, SI_ORDER_ANY,
172 (sysinit_cfunc_t) elf32_insert_brand_entry,
173 &ia32_brand_oinfo);
174
175static Elf32_Brandinfo kia32_brand_info = {
176 .brand = ELFOSABI_FREEBSD,
177 .machine = EM_386,
178 .compat_3_brand = "FreeBSD",
179 .emul_path = NULL,
180 .interp_path = "/lib/ld.so.1",
181 .sysvec = &ia32_freebsd_sysvec,
182 .brand_note = &elf32_kfreebsd_brandnote,
| 30
31#include "opt_compat.h"
32
33#define __ELF_WORD_SIZE 32
34
35#include <sys/param.h>
36#include <sys/exec.h>
37#include <sys/fcntl.h>
38#include <sys/imgact.h>
39#include <sys/kernel.h>
40#include <sys/lock.h>
41#include <sys/malloc.h>
42#include <sys/mutex.h>
43#include <sys/mman.h>
44#include <sys/namei.h>
45#include <sys/pioctl.h>
46#include <sys/proc.h>
47#include <sys/procfs.h>
48#include <sys/resourcevar.h>
49#include <sys/systm.h>
50#include <sys/signalvar.h>
51#include <sys/stat.h>
52#include <sys/sx.h>
53#include <sys/syscall.h>
54#include <sys/sysctl.h>
55#include <sys/sysent.h>
56#include <sys/vnode.h>
57#include <sys/imgact_elf.h>
58
59#include <vm/vm.h>
60#include <vm/vm_kern.h>
61#include <vm/vm_param.h>
62#include <vm/pmap.h>
63#include <vm/vm_map.h>
64#include <vm/vm_object.h>
65#include <vm/vm_extern.h>
66
67#include <compat/freebsd32/freebsd32_signal.h>
68#include <compat/freebsd32/freebsd32_util.h>
69#include <compat/freebsd32/freebsd32_proto.h>
70#include <compat/freebsd32/freebsd32_syscall.h>
71#include <compat/ia32/ia32_signal.h>
72#ifdef __amd64__
73#include <machine/psl.h>
74#include <machine/segments.h>
75#include <machine/specialreg.h>
76#else
77#include <i386/include/psl.h>
78#include <i386/include/segments.h>
79#include <i386/include/specialreg.h>
80#endif
81#include <machine/frame.h>
82#include <machine/md_var.h>
83#include <machine/pcb.h>
84#include <machine/cpufunc.h>
85
86CTASSERT(sizeof(struct ia32_mcontext) == 640);
87CTASSERT(sizeof(struct ia32_ucontext) == 704);
88CTASSERT(sizeof(struct ia32_sigframe) == 800);
89CTASSERT(sizeof(struct siginfo32) == 64);
90#ifdef COMPAT_FREEBSD4
91CTASSERT(sizeof(struct ia32_mcontext4) == 260);
92CTASSERT(sizeof(struct ia32_ucontext4) == 324);
93CTASSERT(sizeof(struct ia32_sigframe4) == 408);
94#endif
95
96static register_t *ia32_copyout_strings(struct image_params *imgp);
97static void ia32_fixlimit(struct rlimit *rl, int which);
98
99SYSCTL_NODE(_compat, OID_AUTO, ia32, CTLFLAG_RW, 0, "ia32 mode");
100
101static u_long ia32_maxdsiz = IA32_MAXDSIZ;
102SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxdsiz, CTLFLAG_RW, &ia32_maxdsiz, 0, "");
103TUNABLE_ULONG("compat.ia32.maxdsiz", &ia32_maxdsiz);
104static u_long ia32_maxssiz = IA32_MAXSSIZ;
105SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxssiz, CTLFLAG_RW, &ia32_maxssiz, 0, "");
106TUNABLE_ULONG("compat.ia32.maxssiz", &ia32_maxssiz);
107static u_long ia32_maxvmem = IA32_MAXVMEM;
108SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxvmem, CTLFLAG_RW, &ia32_maxvmem, 0, "");
109TUNABLE_ULONG("compat.ia32.maxvmem", &ia32_maxvmem);
110
111struct sysentvec ia32_freebsd_sysvec = {
112 .sv_size = FREEBSD32_SYS_MAXSYSCALL,
113 .sv_table = freebsd32_sysent,
114 .sv_mask = 0,
115 .sv_sigsize = 0,
116 .sv_sigtbl = NULL,
117 .sv_errsize = 0,
118 .sv_errtbl = NULL,
119 .sv_transtrap = NULL,
120 .sv_fixup = elf32_freebsd_fixup,
121 .sv_sendsig = ia32_sendsig,
122 .sv_sigcode = ia32_sigcode,
123 .sv_szsigcode = &sz_ia32_sigcode,
124 .sv_prepsyscall = NULL,
125 .sv_name = "FreeBSD ELF32",
126 .sv_coredump = elf32_coredump,
127 .sv_imgact_try = NULL,
128 .sv_minsigstksz = MINSIGSTKSZ,
129 .sv_pagesize = IA32_PAGE_SIZE,
130 .sv_minuser = 0,
131 .sv_maxuser = FREEBSD32_USRSTACK,
132 .sv_usrstack = FREEBSD32_USRSTACK,
133 .sv_psstrings = FREEBSD32_PS_STRINGS,
134 .sv_stackprot = VM_PROT_ALL,
135 .sv_copyout_strings = ia32_copyout_strings,
136 .sv_setregs = ia32_setregs,
137 .sv_fixlimit = ia32_fixlimit,
138 .sv_maxssiz = &ia32_maxssiz,
139 .sv_flags = SV_ABI_FREEBSD | SV_IA32 | SV_ILP32
140};
141
142
143static Elf32_Brandinfo ia32_brand_info = {
144 .brand = ELFOSABI_FREEBSD,
145 .machine = EM_386,
146 .compat_3_brand = "FreeBSD",
147 .emul_path = NULL,
148 .interp_path = "/libexec/ld-elf.so.1",
149 .sysvec = &ia32_freebsd_sysvec,
150 .interp_newpath = "/libexec/ld-elf32.so.1",
151 .brand_note = &elf32_freebsd_brandnote,
152 .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE
153};
154
155SYSINIT(ia32, SI_SUB_EXEC, SI_ORDER_ANY,
156 (sysinit_cfunc_t) elf32_insert_brand_entry,
157 &ia32_brand_info);
158
159static Elf32_Brandinfo ia32_brand_oinfo = {
160 .brand = ELFOSABI_FREEBSD,
161 .machine = EM_386,
162 .compat_3_brand = "FreeBSD",
163 .emul_path = NULL,
164 .interp_path = "/usr/libexec/ld-elf.so.1",
165 .sysvec = &ia32_freebsd_sysvec,
166 .interp_newpath = "/libexec/ld-elf32.so.1",
167 .brand_note = &elf32_freebsd_brandnote,
168 .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE
169};
170
171SYSINIT(oia32, SI_SUB_EXEC, SI_ORDER_ANY,
172 (sysinit_cfunc_t) elf32_insert_brand_entry,
173 &ia32_brand_oinfo);
174
175static Elf32_Brandinfo kia32_brand_info = {
176 .brand = ELFOSABI_FREEBSD,
177 .machine = EM_386,
178 .compat_3_brand = "FreeBSD",
179 .emul_path = NULL,
180 .interp_path = "/lib/ld.so.1",
181 .sysvec = &ia32_freebsd_sysvec,
182 .brand_note = &elf32_kfreebsd_brandnote,
|
184};
185
186SYSINIT(kia32, SI_SUB_EXEC, SI_ORDER_ANY,
187 (sysinit_cfunc_t) elf32_insert_brand_entry,
188 &kia32_brand_info);
189
190
191void
192elf32_dump_thread(struct thread *td __unused, void *dst __unused,
193 size_t *off __unused)
194{
195}
196
197
198/* XXX may be freebsd32 MI */
199static register_t *
200ia32_copyout_strings(struct image_params *imgp)
201{
202 int argc, envc;
203 u_int32_t *vectp;
204 char *stringp, *destp;
205 u_int32_t *stack_base;
206 struct freebsd32_ps_strings *arginfo;
207 size_t execpath_len;
208 int szsigcode;
209
210 /*
211 * Calculate string base and vector table pointers.
212 * Also deal with signal trampoline code for this exec type.
213 */
214 if (imgp->execpath != NULL && imgp->auxargs != NULL)
215 execpath_len = strlen(imgp->execpath) + 1;
216 else
217 execpath_len = 0;
218 arginfo = (struct freebsd32_ps_strings *)FREEBSD32_PS_STRINGS;
219 szsigcode = *(imgp->proc->p_sysent->sv_szsigcode);
220 destp = (caddr_t)arginfo - szsigcode - SPARE_USRSPACE -
221 roundup(execpath_len, sizeof(char *)) -
222 roundup((ARG_MAX - imgp->args->stringspace), sizeof(char *));
223
224 /*
225 * install sigcode
226 */
227 if (szsigcode)
228 copyout(imgp->proc->p_sysent->sv_sigcode,
229 ((caddr_t)arginfo - szsigcode), szsigcode);
230
231 /*
232 * Copy the image path for the rtld.
233 */
234 if (execpath_len != 0) {
235 imgp->execpathp = (uintptr_t)arginfo - szsigcode - execpath_len;
236 copyout(imgp->execpath, (void *)imgp->execpathp,
237 execpath_len);
238 }
239
240 /*
241 * If we have a valid auxargs ptr, prepare some room
242 * on the stack.
243 */
244 if (imgp->auxargs) {
245 /*
246 * 'AT_COUNT*2' is size for the ELF Auxargs data. This is for
247 * lower compatibility.
248 */
249 imgp->auxarg_size = (imgp->auxarg_size) ? imgp->auxarg_size
250 : (AT_COUNT * 2);
251 /*
252 * The '+ 2' is for the null pointers at the end of each of
253 * the arg and env vector sets,and imgp->auxarg_size is room
254 * for argument of Runtime loader.
255 */
256 vectp = (u_int32_t *) (destp - (imgp->args->argc +
257 imgp->args->envc + 2 + imgp->auxarg_size + execpath_len) *
258 sizeof(u_int32_t));
259 } else
260 /*
261 * The '+ 2' is for the null pointers at the end of each of
262 * the arg and env vector sets
263 */
264 vectp = (u_int32_t *)
265 (destp - (imgp->args->argc + imgp->args->envc + 2) * sizeof(u_int32_t));
266
267 /*
268 * vectp also becomes our initial stack base
269 */
270 stack_base = vectp;
271
272 stringp = imgp->args->begin_argv;
273 argc = imgp->args->argc;
274 envc = imgp->args->envc;
275 /*
276 * Copy out strings - arguments and environment.
277 */
278 copyout(stringp, destp, ARG_MAX - imgp->args->stringspace);
279
280 /*
281 * Fill in "ps_strings" struct for ps, w, etc.
282 */
283 suword32(&arginfo->ps_argvstr, (u_int32_t)(intptr_t)vectp);
284 suword32(&arginfo->ps_nargvstr, argc);
285
286 /*
287 * Fill in argument portion of vector table.
288 */
289 for (; argc > 0; --argc) {
290 suword32(vectp++, (u_int32_t)(intptr_t)destp);
291 while (*stringp++ != 0)
292 destp++;
293 destp++;
294 }
295
296 /* a null vector table pointer separates the argp's from the envp's */
297 suword32(vectp++, 0);
298
299 suword32(&arginfo->ps_envstr, (u_int32_t)(intptr_t)vectp);
300 suword32(&arginfo->ps_nenvstr, envc);
301
302 /*
303 * Fill in environment portion of vector table.
304 */
305 for (; envc > 0; --envc) {
306 suword32(vectp++, (u_int32_t)(intptr_t)destp);
307 while (*stringp++ != 0)
308 destp++;
309 destp++;
310 }
311
312 /* end of vector table is a null pointer */
313 suword32(vectp, 0);
314
315 return ((register_t *)stack_base);
316}
317
318static void
319ia32_fixlimit(struct rlimit *rl, int which)
320{
321
322 switch (which) {
323 case RLIMIT_DATA:
324 if (ia32_maxdsiz != 0) {
325 if (rl->rlim_cur > ia32_maxdsiz)
326 rl->rlim_cur = ia32_maxdsiz;
327 if (rl->rlim_max > ia32_maxdsiz)
328 rl->rlim_max = ia32_maxdsiz;
329 }
330 break;
331 case RLIMIT_STACK:
332 if (ia32_maxssiz != 0) {
333 if (rl->rlim_cur > ia32_maxssiz)
334 rl->rlim_cur = ia32_maxssiz;
335 if (rl->rlim_max > ia32_maxssiz)
336 rl->rlim_max = ia32_maxssiz;
337 }
338 break;
339 case RLIMIT_VMEM:
340 if (ia32_maxvmem != 0) {
341 if (rl->rlim_cur > ia32_maxvmem)
342 rl->rlim_cur = ia32_maxvmem;
343 if (rl->rlim_max > ia32_maxvmem)
344 rl->rlim_max = ia32_maxvmem;
345 }
346 break;
347 }
348}
| 184};
185
186SYSINIT(kia32, SI_SUB_EXEC, SI_ORDER_ANY,
187 (sysinit_cfunc_t) elf32_insert_brand_entry,
188 &kia32_brand_info);
189
190
191void
192elf32_dump_thread(struct thread *td __unused, void *dst __unused,
193 size_t *off __unused)
194{
195}
196
197
198/* XXX may be freebsd32 MI */
199static register_t *
200ia32_copyout_strings(struct image_params *imgp)
201{
202 int argc, envc;
203 u_int32_t *vectp;
204 char *stringp, *destp;
205 u_int32_t *stack_base;
206 struct freebsd32_ps_strings *arginfo;
207 size_t execpath_len;
208 int szsigcode;
209
210 /*
211 * Calculate string base and vector table pointers.
212 * Also deal with signal trampoline code for this exec type.
213 */
214 if (imgp->execpath != NULL && imgp->auxargs != NULL)
215 execpath_len = strlen(imgp->execpath) + 1;
216 else
217 execpath_len = 0;
218 arginfo = (struct freebsd32_ps_strings *)FREEBSD32_PS_STRINGS;
219 szsigcode = *(imgp->proc->p_sysent->sv_szsigcode);
220 destp = (caddr_t)arginfo - szsigcode - SPARE_USRSPACE -
221 roundup(execpath_len, sizeof(char *)) -
222 roundup((ARG_MAX - imgp->args->stringspace), sizeof(char *));
223
224 /*
225 * install sigcode
226 */
227 if (szsigcode)
228 copyout(imgp->proc->p_sysent->sv_sigcode,
229 ((caddr_t)arginfo - szsigcode), szsigcode);
230
231 /*
232 * Copy the image path for the rtld.
233 */
234 if (execpath_len != 0) {
235 imgp->execpathp = (uintptr_t)arginfo - szsigcode - execpath_len;
236 copyout(imgp->execpath, (void *)imgp->execpathp,
237 execpath_len);
238 }
239
240 /*
241 * If we have a valid auxargs ptr, prepare some room
242 * on the stack.
243 */
244 if (imgp->auxargs) {
245 /*
246 * 'AT_COUNT*2' is size for the ELF Auxargs data. This is for
247 * lower compatibility.
248 */
249 imgp->auxarg_size = (imgp->auxarg_size) ? imgp->auxarg_size
250 : (AT_COUNT * 2);
251 /*
252 * The '+ 2' is for the null pointers at the end of each of
253 * the arg and env vector sets,and imgp->auxarg_size is room
254 * for argument of Runtime loader.
255 */
256 vectp = (u_int32_t *) (destp - (imgp->args->argc +
257 imgp->args->envc + 2 + imgp->auxarg_size + execpath_len) *
258 sizeof(u_int32_t));
259 } else
260 /*
261 * The '+ 2' is for the null pointers at the end of each of
262 * the arg and env vector sets
263 */
264 vectp = (u_int32_t *)
265 (destp - (imgp->args->argc + imgp->args->envc + 2) * sizeof(u_int32_t));
266
267 /*
268 * vectp also becomes our initial stack base
269 */
270 stack_base = vectp;
271
272 stringp = imgp->args->begin_argv;
273 argc = imgp->args->argc;
274 envc = imgp->args->envc;
275 /*
276 * Copy out strings - arguments and environment.
277 */
278 copyout(stringp, destp, ARG_MAX - imgp->args->stringspace);
279
280 /*
281 * Fill in "ps_strings" struct for ps, w, etc.
282 */
283 suword32(&arginfo->ps_argvstr, (u_int32_t)(intptr_t)vectp);
284 suword32(&arginfo->ps_nargvstr, argc);
285
286 /*
287 * Fill in argument portion of vector table.
288 */
289 for (; argc > 0; --argc) {
290 suword32(vectp++, (u_int32_t)(intptr_t)destp);
291 while (*stringp++ != 0)
292 destp++;
293 destp++;
294 }
295
296 /* a null vector table pointer separates the argp's from the envp's */
297 suword32(vectp++, 0);
298
299 suword32(&arginfo->ps_envstr, (u_int32_t)(intptr_t)vectp);
300 suword32(&arginfo->ps_nenvstr, envc);
301
302 /*
303 * Fill in environment portion of vector table.
304 */
305 for (; envc > 0; --envc) {
306 suword32(vectp++, (u_int32_t)(intptr_t)destp);
307 while (*stringp++ != 0)
308 destp++;
309 destp++;
310 }
311
312 /* end of vector table is a null pointer */
313 suword32(vectp, 0);
314
315 return ((register_t *)stack_base);
316}
317
318static void
319ia32_fixlimit(struct rlimit *rl, int which)
320{
321
322 switch (which) {
323 case RLIMIT_DATA:
324 if (ia32_maxdsiz != 0) {
325 if (rl->rlim_cur > ia32_maxdsiz)
326 rl->rlim_cur = ia32_maxdsiz;
327 if (rl->rlim_max > ia32_maxdsiz)
328 rl->rlim_max = ia32_maxdsiz;
329 }
330 break;
331 case RLIMIT_STACK:
332 if (ia32_maxssiz != 0) {
333 if (rl->rlim_cur > ia32_maxssiz)
334 rl->rlim_cur = ia32_maxssiz;
335 if (rl->rlim_max > ia32_maxssiz)
336 rl->rlim_max = ia32_maxssiz;
337 }
338 break;
339 case RLIMIT_VMEM:
340 if (ia32_maxvmem != 0) {
341 if (rl->rlim_cur > ia32_maxvmem)
342 rl->rlim_cur = ia32_maxvmem;
343 if (rl->rlim_max > ia32_maxvmem)
344 rl->rlim_max = ia32_maxvmem;
345 }
346 break;
347 }
348}
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