1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
| //===-- sanitizer_netbsd.cpp ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is shared between Sanitizer run-time libraries and implements
// NetBSD-specific functions from sanitizer_libc.h.
//===----------------------------------------------------------------------===//
#include "sanitizer_platform.h"
#if SANITIZER_NETBSD
#include "sanitizer_common.h"
#include "sanitizer_flags.h"
#include "sanitizer_getauxval.h"
#include "sanitizer_internal_defs.h"
#include "sanitizer_libc.h"
#include "sanitizer_linux.h"
#include "sanitizer_mutex.h"
#include "sanitizer_placement_new.h"
#include "sanitizer_procmaps.h"
#include <sys/param.h>
#include <sys/types.h>
#include <sys/exec.h>
#include <sys/mman.h>
#include <sys/ptrace.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <dlfcn.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <link.h>
#include <lwp.h>
#include <pthread.h>
#include <sched.h>
#include <signal.h>
#include <ucontext.h>
#include <unistd.h>
extern "C" void *__mmap(void *, size_t, int, int, int, int,
off_t) SANITIZER_WEAK_ATTRIBUTE;
extern "C" int __sysctl(const int *, unsigned int, void *, size_t *,
const void *, size_t) SANITIZER_WEAK_ATTRIBUTE;
extern "C" int _sys_close(int) SANITIZER_WEAK_ATTRIBUTE;
extern "C" int _sys_open(const char *, int, ...) SANITIZER_WEAK_ATTRIBUTE;
extern "C" ssize_t _sys_read(int, void *, size_t) SANITIZER_WEAK_ATTRIBUTE;
extern "C" ssize_t _sys_write(int, const void *,
size_t) SANITIZER_WEAK_ATTRIBUTE;
extern "C" int __ftruncate(int, int, off_t) SANITIZER_WEAK_ATTRIBUTE;
extern "C" ssize_t _sys_readlink(const char *, char *,
size_t) SANITIZER_WEAK_ATTRIBUTE;
extern "C" int _sys_sched_yield() SANITIZER_WEAK_ATTRIBUTE;
extern "C" int _sys___nanosleep50(const void *,
void *) SANITIZER_WEAK_ATTRIBUTE;
extern "C" int _sys_execve(const char *, char *const[],
char *const[]) SANITIZER_WEAK_ATTRIBUTE;
extern "C" off_t __lseek(int, int, off_t, int) SANITIZER_WEAK_ATTRIBUTE;
extern "C" int __fork() SANITIZER_WEAK_ATTRIBUTE;
extern "C" int _sys___sigprocmask14(int, const void *,
void *) SANITIZER_WEAK_ATTRIBUTE;
extern "C" int _sys___wait450(int wpid, int *, int,
void *) SANITIZER_WEAK_ATTRIBUTE;
namespace __sanitizer {
static void *GetRealLibcAddress(const char *symbol) {
void *real = dlsym(RTLD_NEXT, symbol);
if (!real)
real = dlsym(RTLD_DEFAULT, symbol);
if (!real) {
Printf("GetRealLibcAddress failed for symbol=%s", symbol);
Die();
}
return real;
}
#define _REAL(func, ...) real##_##func(__VA_ARGS__)
#define DEFINE__REAL(ret_type, func, ...) \
static ret_type (*real_##func)(__VA_ARGS__) = NULL; \
if (!real_##func) { \
real_##func = (ret_type(*)(__VA_ARGS__))GetRealLibcAddress(#func); \
} \
CHECK(real_##func);
// --------------- sanitizer_libc.h
uptr internal_mmap(void *addr, uptr length, int prot, int flags, int fd,
OFF_T offset) {
CHECK(&__mmap);
return (uptr)__mmap(addr, length, prot, flags, fd, 0, offset);
}
uptr internal_munmap(void *addr, uptr length) {
DEFINE__REAL(int, munmap, void *a, uptr b);
return _REAL(munmap, addr, length);
}
int internal_mprotect(void *addr, uptr length, int prot) {
DEFINE__REAL(int, mprotect, void *a, uptr b, int c);
return _REAL(mprotect, addr, length, prot);
}
uptr internal_close(fd_t fd) {
CHECK(&_sys_close);
return _sys_close(fd);
}
uptr internal_open(const char *filename, int flags) {
CHECK(&_sys_open);
return _sys_open(filename, flags);
}
uptr internal_open(const char *filename, int flags, u32 mode) {
CHECK(&_sys_open);
return _sys_open(filename, flags, mode);
}
uptr internal_read(fd_t fd, void *buf, uptr count) {
sptr res;
CHECK(&_sys_read);
HANDLE_EINTR(res, (sptr)_sys_read(fd, buf, (size_t)count));
return res;
}
uptr internal_write(fd_t fd, const void *buf, uptr count) {
sptr res;
CHECK(&_sys_write);
HANDLE_EINTR(res, (sptr)_sys_write(fd, buf, count));
return res;
}
uptr internal_ftruncate(fd_t fd, uptr size) {
sptr res;
CHECK(&__ftruncate);
HANDLE_EINTR(res, __ftruncate(fd, 0, (s64)size));
return res;
}
uptr internal_stat(const char *path, void *buf) {
DEFINE__REAL(int, __stat50, const char *a, void *b);
return _REAL(__stat50, path, buf);
}
uptr internal_lstat(const char *path, void *buf) {
DEFINE__REAL(int, __lstat50, const char *a, void *b);
return _REAL(__lstat50, path, buf);
}
uptr internal_fstat(fd_t fd, void *buf) {
DEFINE__REAL(int, __fstat50, int a, void *b);
return _REAL(__fstat50, fd, buf);
}
uptr internal_filesize(fd_t fd) {
struct stat st;
if (internal_fstat(fd, &st))
return -1;
return (uptr)st.st_size;
}
uptr internal_dup(int oldfd) {
DEFINE__REAL(int, dup, int a);
return _REAL(dup, oldfd);
}
uptr internal_dup2(int oldfd, int newfd) {
DEFINE__REAL(int, dup2, int a, int b);
return _REAL(dup2, oldfd, newfd);
}
uptr internal_readlink(const char *path, char *buf, uptr bufsize) {
CHECK(&_sys_readlink);
return (uptr)_sys_readlink(path, buf, bufsize);
}
uptr internal_unlink(const char *path) {
DEFINE__REAL(int, unlink, const char *a);
return _REAL(unlink, path);
}
uptr internal_rename(const char *oldpath, const char *newpath) {
DEFINE__REAL(int, rename, const char *a, const char *b);
return _REAL(rename, oldpath, newpath);
}
uptr internal_sched_yield() {
CHECK(&_sys_sched_yield);
return _sys_sched_yield();
}
void internal__exit(int exitcode) {
DEFINE__REAL(void, _exit, int a);
_REAL(_exit, exitcode);
Die(); // Unreachable.
}
unsigned int internal_sleep(unsigned int seconds) {
struct timespec ts;
ts.tv_sec = seconds;
ts.tv_nsec = 0;
CHECK(&_sys___nanosleep50);
int res = _sys___nanosleep50(&ts, &ts);
if (res)
return ts.tv_sec;
return 0;
}
uptr internal_execve(const char *filename, char *const argv[],
char *const envp[]) {
CHECK(&_sys_execve);
return _sys_execve(filename, argv, envp);
}
tid_t GetTid() {
DEFINE__REAL(int, _lwp_self);
return _REAL(_lwp_self);
}
int TgKill(pid_t pid, tid_t tid, int sig) {
DEFINE__REAL(int, _lwp_kill, int a, int b);
(void)pid;
return _REAL(_lwp_kill, tid, sig);
}
u64 NanoTime() {
timeval tv;
DEFINE__REAL(int, __gettimeofday50, void *a, void *b);
internal_memset(&tv, 0, sizeof(tv));
_REAL(__gettimeofday50, &tv, 0);
return (u64)tv.tv_sec * 1000 * 1000 * 1000 + tv.tv_usec * 1000;
}
uptr internal_clock_gettime(__sanitizer_clockid_t clk_id, void *tp) {
DEFINE__REAL(int, __clock_gettime50, __sanitizer_clockid_t a, void *b);
return _REAL(__clock_gettime50, clk_id, tp);
}
uptr internal_ptrace(int request, int pid, void *addr, int data) {
DEFINE__REAL(int, ptrace, int a, int b, void *c, int d);
return _REAL(ptrace, request, pid, addr, data);
}
uptr internal_waitpid(int pid, int *status, int options) {
CHECK(&_sys___wait450);
return _sys___wait450(pid, status, options, 0 /* rusage */);
}
uptr internal_getpid() {
DEFINE__REAL(int, getpid);
return _REAL(getpid);
}
uptr internal_getppid() {
DEFINE__REAL(int, getppid);
return _REAL(getppid);
}
uptr internal_getdents(fd_t fd, void *dirp, unsigned int count) {
DEFINE__REAL(int, __getdents30, int a, void *b, size_t c);
return _REAL(__getdents30, fd, dirp, count);
}
uptr internal_lseek(fd_t fd, OFF_T offset, int whence) {
CHECK(&__lseek);
return __lseek(fd, 0, offset, whence);
}
uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
Printf("internal_prctl not implemented for NetBSD");
Die();
return 0;
}
uptr internal_sigaltstack(const void *ss, void *oss) {
DEFINE__REAL(int, __sigaltstack14, const void *a, void *b);
return _REAL(__sigaltstack14, ss, oss);
}
int internal_fork() {
CHECK(&__fork);
return __fork();
}
int internal_sysctl(const int *name, unsigned int namelen, void *oldp,
uptr *oldlenp, const void *newp, uptr newlen) {
CHECK(&__sysctl);
return __sysctl(name, namelen, oldp, (size_t *)oldlenp, newp, (size_t)newlen);
}
int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp,
const void *newp, uptr newlen) {
DEFINE__REAL(int, sysctlbyname, const char *a, void *b, size_t *c,
const void *d, size_t e);
return _REAL(sysctlbyname, sname, oldp, (size_t *)oldlenp, newp,
(size_t)newlen);
}
uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
__sanitizer_sigset_t *oldset) {
CHECK(&_sys___sigprocmask14);
return _sys___sigprocmask14(how, set, oldset);
}
void internal_sigfillset(__sanitizer_sigset_t *set) {
DEFINE__REAL(int, __sigfillset14, const void *a);
(void)_REAL(__sigfillset14, set);
}
void internal_sigemptyset(__sanitizer_sigset_t *set) {
DEFINE__REAL(int, __sigemptyset14, const void *a);
(void)_REAL(__sigemptyset14, set);
}
void internal_sigdelset(__sanitizer_sigset_t *set, int signo) {
DEFINE__REAL(int, __sigdelset14, const void *a, int b);
(void)_REAL(__sigdelset14, set, signo);
}
uptr internal_clone(int (*fn)(void *), void *child_stack, int flags,
void *arg) {
DEFINE__REAL(int, clone, int (*a)(void *b), void *c, int d, void *e);
return _REAL(clone, fn, child_stack, flags, arg);
}
} // namespace __sanitizer
#endif
|