1 //===-- sanitizer_netbsd.cc -----------------------------------------------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file is shared between Sanitizer run-time libraries and implements
10 // NetBSD-specific functions from sanitizer_libc.h.
11 //===----------------------------------------------------------------------===//
13 #include "sanitizer_platform.h"
17 #include "sanitizer_common.h"
18 #include "sanitizer_flags.h"
19 #include "sanitizer_getauxval.h"
20 #include "sanitizer_internal_defs.h"
21 #include "sanitizer_libc.h"
22 #include "sanitizer_linux.h"
23 #include "sanitizer_mutex.h"
24 #include "sanitizer_placement_new.h"
25 #include "sanitizer_procmaps.h"
27 #include <sys/param.h>
28 #include <sys/types.h>
32 #include <sys/ptrace.h>
33 #include <sys/resource.h>
35 #include <sys/syscall.h>
36 #include <sys/sysctl.h>
51 extern "C" void *__mmap(void *, size_t, int, int, int, int,
52 off_t) SANITIZER_WEAK_ATTRIBUTE;
53 extern "C" int __sysctl(const int *, unsigned int, void *, size_t *,
54 const void *, size_t) SANITIZER_WEAK_ATTRIBUTE;
55 extern "C" int _sys_close(int) SANITIZER_WEAK_ATTRIBUTE;
56 extern "C" int _sys_open(const char *, int, ...) SANITIZER_WEAK_ATTRIBUTE;
57 extern "C" ssize_t _sys_read(int, void *, size_t) SANITIZER_WEAK_ATTRIBUTE;
58 extern "C" ssize_t _sys_write(int, const void *,
59 size_t) SANITIZER_WEAK_ATTRIBUTE;
60 extern "C" int __ftruncate(int, int, off_t) SANITIZER_WEAK_ATTRIBUTE;
61 extern "C" ssize_t _sys_readlink(const char *, char *,
62 size_t) SANITIZER_WEAK_ATTRIBUTE;
63 extern "C" int _sys_sched_yield() SANITIZER_WEAK_ATTRIBUTE;
64 extern "C" int _sys___nanosleep50(const void *,
65 void *) SANITIZER_WEAK_ATTRIBUTE;
66 extern "C" int _sys_execve(const char *, char *const[],
67 char *const[]) SANITIZER_WEAK_ATTRIBUTE;
68 extern "C" off_t __lseek(int, int, off_t, int) SANITIZER_WEAK_ATTRIBUTE;
69 extern "C" int __fork() SANITIZER_WEAK_ATTRIBUTE;
70 extern "C" int _sys___sigprocmask14(int, const void *,
71 void *) SANITIZER_WEAK_ATTRIBUTE;
72 extern "C" int _sys___wait450(int wpid, int *, int,
73 void *) SANITIZER_WEAK_ATTRIBUTE;
75 namespace __sanitizer {
77 static void *GetRealLibcAddress(const char *symbol) {
78 void *real = dlsym(RTLD_NEXT, symbol);
80 real = dlsym(RTLD_DEFAULT, symbol);
82 Printf("GetRealLibcAddress failed for symbol=%s", symbol);
88 #define _REAL(func, ...) real##_##func(__VA_ARGS__)
89 #define DEFINE__REAL(ret_type, func, ...) \
90 static ret_type (*real_##func)(__VA_ARGS__) = NULL; \
92 real_##func = (ret_type(*)(__VA_ARGS__))GetRealLibcAddress(#func); \
96 // --------------- sanitizer_libc.h
97 uptr internal_mmap(void *addr, uptr length, int prot, int flags, int fd,
100 return (uptr)__mmap(addr, length, prot, flags, fd, 0, offset);
103 uptr internal_munmap(void *addr, uptr length) {
104 DEFINE__REAL(int, munmap, void *a, uptr b);
105 return _REAL(munmap, addr, length);
108 int internal_mprotect(void *addr, uptr length, int prot) {
109 DEFINE__REAL(int, mprotect, void *a, uptr b, int c);
110 return _REAL(mprotect, addr, length, prot);
113 uptr internal_close(fd_t fd) {
115 return _sys_close(fd);
118 uptr internal_open(const char *filename, int flags) {
120 return _sys_open(filename, flags);
123 uptr internal_open(const char *filename, int flags, u32 mode) {
125 return _sys_open(filename, flags, mode);
128 uptr internal_read(fd_t fd, void *buf, uptr count) {
131 HANDLE_EINTR(res, (sptr)_sys_read(fd, buf, (size_t)count));
135 uptr internal_write(fd_t fd, const void *buf, uptr count) {
138 HANDLE_EINTR(res, (sptr)_sys_write(fd, buf, count));
142 uptr internal_ftruncate(fd_t fd, uptr size) {
145 HANDLE_EINTR(res, __ftruncate(fd, 0, (s64)size));
149 uptr internal_stat(const char *path, void *buf) {
150 DEFINE__REAL(int, __stat50, const char *a, void *b);
151 return _REAL(__stat50, path, buf);
154 uptr internal_lstat(const char *path, void *buf) {
155 DEFINE__REAL(int, __lstat50, const char *a, void *b);
156 return _REAL(__lstat50, path, buf);
159 uptr internal_fstat(fd_t fd, void *buf) {
160 DEFINE__REAL(int, __fstat50, int a, void *b);
161 return _REAL(__fstat50, fd, buf);
164 uptr internal_filesize(fd_t fd) {
166 if (internal_fstat(fd, &st))
168 return (uptr)st.st_size;
171 uptr internal_dup(int oldfd) {
172 DEFINE__REAL(int, dup, int a);
173 return _REAL(dup, oldfd);
176 uptr internal_dup2(int oldfd, int newfd) {
177 DEFINE__REAL(int, dup2, int a, int b);
178 return _REAL(dup2, oldfd, newfd);
181 uptr internal_readlink(const char *path, char *buf, uptr bufsize) {
182 CHECK(&_sys_readlink);
183 return (uptr)_sys_readlink(path, buf, bufsize);
186 uptr internal_unlink(const char *path) {
187 DEFINE__REAL(int, unlink, const char *a);
188 return _REAL(unlink, path);
191 uptr internal_rename(const char *oldpath, const char *newpath) {
192 DEFINE__REAL(int, rename, const char *a, const char *b);
193 return _REAL(rename, oldpath, newpath);
196 uptr internal_sched_yield() {
197 CHECK(&_sys_sched_yield);
198 return _sys_sched_yield();
201 void internal__exit(int exitcode) {
202 DEFINE__REAL(void, _exit, int a);
203 _REAL(_exit, exitcode);
204 Die(); // Unreachable.
207 unsigned int internal_sleep(unsigned int seconds) {
211 CHECK(&_sys___nanosleep50);
212 int res = _sys___nanosleep50(&ts, &ts);
218 uptr internal_execve(const char *filename, char *const argv[],
219 char *const envp[]) {
221 return _sys_execve(filename, argv, envp);
225 DEFINE__REAL(int, _lwp_self);
226 return _REAL(_lwp_self);
229 int TgKill(pid_t pid, tid_t tid, int sig) {
230 DEFINE__REAL(int, _lwp_kill, int a, int b);
232 return _REAL(_lwp_kill, tid, sig);
237 DEFINE__REAL(int, __gettimeofday50, void *a, void *b);
238 internal_memset(&tv, 0, sizeof(tv));
239 _REAL(__gettimeofday50, &tv, 0);
240 return (u64)tv.tv_sec * 1000 * 1000 * 1000 + tv.tv_usec * 1000;
243 uptr internal_clock_gettime(__sanitizer_clockid_t clk_id, void *tp) {
244 DEFINE__REAL(int, __clock_gettime50, __sanitizer_clockid_t a, void *b);
245 return _REAL(__clock_gettime50, clk_id, tp);
248 uptr internal_ptrace(int request, int pid, void *addr, int data) {
249 DEFINE__REAL(int, ptrace, int a, int b, void *c, int d);
250 return _REAL(ptrace, request, pid, addr, data);
253 uptr internal_waitpid(int pid, int *status, int options) {
254 CHECK(&_sys___wait450);
255 return _sys___wait450(pid, status, options, 0 /* rusage */);
258 uptr internal_getpid() {
259 DEFINE__REAL(int, getpid);
260 return _REAL(getpid);
263 uptr internal_getppid() {
264 DEFINE__REAL(int, getppid);
265 return _REAL(getppid);
268 uptr internal_getdents(fd_t fd, void *dirp, unsigned int count) {
269 DEFINE__REAL(int, __getdents30, int a, void *b, size_t c);
270 return _REAL(__getdents30, fd, dirp, count);
273 uptr internal_lseek(fd_t fd, OFF_T offset, int whence) {
275 return __lseek(fd, 0, offset, whence);
278 uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
279 Printf("internal_prctl not implemented for NetBSD");
284 uptr internal_sigaltstack(const void *ss, void *oss) {
285 DEFINE__REAL(int, __sigaltstack14, const void *a, void *b);
286 return _REAL(__sigaltstack14, ss, oss);
289 int internal_fork() {
294 int internal_sysctl(const int *name, unsigned int namelen, void *oldp,
295 uptr *oldlenp, const void *newp, uptr newlen) {
297 return __sysctl(name, namelen, oldp, (size_t *)oldlenp, newp, (size_t)newlen);
300 int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp,
301 const void *newp, uptr newlen) {
302 DEFINE__REAL(int, sysctlbyname, const char *a, void *b, size_t *c,
303 const void *d, size_t e);
304 return _REAL(sysctlbyname, sname, oldp, (size_t *)oldlenp, newp,
308 uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
309 __sanitizer_sigset_t *oldset) {
310 CHECK(&_sys___sigprocmask14);
311 return _sys___sigprocmask14(how, set, oldset);
314 void internal_sigfillset(__sanitizer_sigset_t *set) {
315 DEFINE__REAL(int, __sigfillset14, const void *a);
316 (void)_REAL(__sigfillset14, set);
319 void internal_sigemptyset(__sanitizer_sigset_t *set) {
320 DEFINE__REAL(int, __sigemptyset14, const void *a);
321 (void)_REAL(__sigemptyset14, set);
324 void internal_sigdelset(__sanitizer_sigset_t *set, int signo) {
325 DEFINE__REAL(int, __sigdelset14, const void *a, int b);
326 (void)_REAL(__sigdelset14, set, signo);
329 uptr internal_clone(int (*fn)(void *), void *child_stack, int flags,
331 DEFINE__REAL(int, clone, int (*a)(void *b), void *c, int d, void *e);
333 return _REAL(clone, fn, child_stack, flags, arg);
336 } // namespace __sanitizer