linux_emul.c (416ba5c74546f32a993436a99516d35008e9f384) linux_emul.c (23e8912c6087b3b6690566258c3a06f55a51eb2c)
1/*-
2 * Copyright (c) 2006 Roman Divacky
3 * Copyright (c) 2013 Dmitry Chagin
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:

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40#include <sys/mutex.h>
41#include <sys/sx.h>
42#include <sys/proc.h>
43#include <sys/syscallsubr.h>
44#include <sys/sysent.h>
45
46#include <compat/linux/linux_emul.h>
47#include <compat/linux/linux_misc.h>
1/*-
2 * Copyright (c) 2006 Roman Divacky
3 * Copyright (c) 2013 Dmitry Chagin
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:

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40#include <sys/mutex.h>
41#include <sys/sx.h>
42#include <sys/proc.h>
43#include <sys/syscallsubr.h>
44#include <sys/sysent.h>
45
46#include <compat/linux/linux_emul.h>
47#include <compat/linux/linux_misc.h>
48#include <compat/linux/linux_persona.h>
48#include <compat/linux/linux_util.h>
49
50
51/*
52 * This returns reference to the thread emuldata entry (if found)
53 *
54 * Hold PROC_LOCK when referencing emuldata from other threads.
55 */

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122 em->pdeath_signal = 0;
123 em->robust_futexes = NULL;
124 em->child_clear_tid = NULL;
125 em->child_set_tid = NULL;
126
127 /* epoll should be destroyed in a case of exec. */
128 pem = pem_find(p);
129 KASSERT(pem != NULL, ("proc_exit: proc emuldata not found.\n"));
49#include <compat/linux/linux_util.h>
50
51
52/*
53 * This returns reference to the thread emuldata entry (if found)
54 *
55 * Hold PROC_LOCK when referencing emuldata from other threads.
56 */

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123 em->pdeath_signal = 0;
124 em->robust_futexes = NULL;
125 em->child_clear_tid = NULL;
126 em->child_set_tid = NULL;
127
128 /* epoll should be destroyed in a case of exec. */
129 pem = pem_find(p);
130 KASSERT(pem != NULL, ("proc_exit: proc emuldata not found.\n"));
130
131 pem->persona = 0;
131 if (pem->epoll != NULL) {
132 emd = pem->epoll;
133 pem->epoll = NULL;
134 free(emd, M_EPOLL);
135 }
136 }
137
138}

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215 return (0);
216}
217
218void
219linux_proc_exec(void *arg __unused, struct proc *p, struct image_params *imgp)
220{
221 struct thread *td = curthread;
222 struct thread *othertd;
132 if (pem->epoll != NULL) {
133 emd = pem->epoll;
134 pem->epoll = NULL;
135 free(emd, M_EPOLL);
136 }
137 }
138
139}

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216 return (0);
217}
218
219void
220linux_proc_exec(void *arg __unused, struct proc *p, struct image_params *imgp)
221{
222 struct thread *td = curthread;
223 struct thread *othertd;
224#if defined(__amd64__)
225 struct linux_pemuldata *pem;
226#endif
223
224 /*
225 * In a case of execing from linux binary properly detach
226 * other threads from the user space.
227 */
228 if (__predict_false(SV_PROC_ABI(p) == SV_ABI_LINUX)) {
229 FOREACH_THREAD_IN_PROC(p, othertd) {
230 if (td != othertd)

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238 */
239 if (__predict_false((imgp->sysent->sv_flags & SV_ABI_MASK) ==
240 SV_ABI_LINUX)) {
241
242 if (SV_PROC_ABI(p) == SV_ABI_LINUX)
243 linux_proc_init(td, NULL, 0);
244 else
245 linux_proc_init(td, td, 0);
227
228 /*
229 * In a case of execing from linux binary properly detach
230 * other threads from the user space.
231 */
232 if (__predict_false(SV_PROC_ABI(p) == SV_ABI_LINUX)) {
233 FOREACH_THREAD_IN_PROC(p, othertd) {
234 if (td != othertd)

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242 */
243 if (__predict_false((imgp->sysent->sv_flags & SV_ABI_MASK) ==
244 SV_ABI_LINUX)) {
245
246 if (SV_PROC_ABI(p) == SV_ABI_LINUX)
247 linux_proc_init(td, NULL, 0);
248 else
249 linux_proc_init(td, td, 0);
250#if defined(__amd64__)
251 /*
252 * An IA32 executable which has executable stack will have the
253 * READ_IMPLIES_EXEC personality flag set automatically.
254 */
255 if (SV_PROC_FLAG(td->td_proc, SV_ILP32) &&
256 imgp->stack_prot & VM_PROT_EXECUTE) {
257 pem = pem_find(p);
258 pem->persona |= LINUX_READ_IMPLIES_EXEC;
259 }
260#endif
246 }
247}
248
249void
250linux_thread_dtor(void *arg __unused, struct thread *td)
251{
252 struct linux_emuldata *em;
253

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262}
263
264void
265linux_thread_dtor(void *arg __unused, struct thread *td)
266{
267 struct linux_emuldata *em;
268

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