1 //===-- sanitizer_netbsd.cc -----------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file is shared between Sanitizer run-time libraries and implements
11 // NetBSD-specific functions from sanitizer_libc.h.
12 //===----------------------------------------------------------------------===//
14 #include "sanitizer_platform.h"
18 #include "sanitizer_common.h"
19 #include "sanitizer_flags.h"
20 #include "sanitizer_getauxval.h"
21 #include "sanitizer_internal_defs.h"
22 #include "sanitizer_libc.h"
23 #include "sanitizer_linux.h"
24 #include "sanitizer_mutex.h"
25 #include "sanitizer_placement_new.h"
26 #include "sanitizer_procmaps.h"
28 #include <sys/param.h>
29 #include <sys/types.h>
33 #include <sys/ptrace.h>
34 #include <sys/resource.h>
36 #include <sys/syscall.h>
37 #include <sys/sysctl.h>
52 extern "C" void *__mmap(void *, size_t, int, int, int, int,
53 off_t) SANITIZER_WEAK_ATTRIBUTE;
54 extern "C" int __sysctl(const int *, unsigned int, void *, size_t *,
55 const void *, size_t) SANITIZER_WEAK_ATTRIBUTE;
56 extern "C" int _sys_close(int) SANITIZER_WEAK_ATTRIBUTE;
57 extern "C" int _sys_open(const char *, int, ...) SANITIZER_WEAK_ATTRIBUTE;
58 extern "C" ssize_t _sys_read(int, void *, size_t) SANITIZER_WEAK_ATTRIBUTE;
59 extern "C" ssize_t _sys_write(int, const void *,
60 size_t) SANITIZER_WEAK_ATTRIBUTE;
61 extern "C" int __ftruncate(int, int, off_t) SANITIZER_WEAK_ATTRIBUTE;
62 extern "C" ssize_t _sys_readlink(const char *, char *,
63 size_t) SANITIZER_WEAK_ATTRIBUTE;
64 extern "C" int _sys_sched_yield() SANITIZER_WEAK_ATTRIBUTE;
65 extern "C" int _sys___nanosleep50(const void *,
66 void *) SANITIZER_WEAK_ATTRIBUTE;
67 extern "C" int _sys_execve(const char *, char *const[],
68 char *const[]) SANITIZER_WEAK_ATTRIBUTE;
69 extern "C" off_t __lseek(int, int, off_t, int) SANITIZER_WEAK_ATTRIBUTE;
70 extern "C" int __fork() SANITIZER_WEAK_ATTRIBUTE;
71 extern "C" int _sys___sigprocmask14(int, const void *,
72 void *) SANITIZER_WEAK_ATTRIBUTE;
73 extern "C" int _sys___wait450(int wpid, int *, int,
74 void *) SANITIZER_WEAK_ATTRIBUTE;
76 namespace __sanitizer {
78 static void *GetRealLibcAddress(const char *symbol) {
79 void *real = dlsym(RTLD_NEXT, symbol);
81 real = dlsym(RTLD_DEFAULT, symbol);
83 Printf("GetRealLibcAddress failed for symbol=%s", symbol);
89 #define _REAL(func, ...) real##_##func(__VA_ARGS__)
90 #define DEFINE__REAL(ret_type, func, ...) \
91 static ret_type (*real_##func)(__VA_ARGS__) = NULL; \
93 real_##func = (ret_type(*)(__VA_ARGS__))GetRealLibcAddress(#func); \
97 // --------------- sanitizer_libc.h
98 uptr internal_mmap(void *addr, uptr length, int prot, int flags, int fd,
101 return (uptr)__mmap(addr, length, prot, flags, fd, 0, offset);
104 uptr internal_munmap(void *addr, uptr length) {
105 DEFINE__REAL(int, munmap, void *a, uptr b);
106 return _REAL(munmap, addr, length);
109 int internal_mprotect(void *addr, uptr length, int prot) {
110 DEFINE__REAL(int, mprotect, void *a, uptr b, int c);
111 return _REAL(mprotect, addr, length, prot);
114 uptr internal_close(fd_t fd) {
116 return _sys_close(fd);
119 uptr internal_open(const char *filename, int flags) {
121 return _sys_open(filename, flags);
124 uptr internal_open(const char *filename, int flags, u32 mode) {
126 return _sys_open(filename, flags, mode);
129 uptr internal_read(fd_t fd, void *buf, uptr count) {
132 HANDLE_EINTR(res, (sptr)_sys_read(fd, buf, (size_t)count));
136 uptr internal_write(fd_t fd, const void *buf, uptr count) {
139 HANDLE_EINTR(res, (sptr)_sys_write(fd, buf, count));
143 uptr internal_ftruncate(fd_t fd, uptr size) {
146 HANDLE_EINTR(res, __ftruncate(fd, 0, (s64)size));
150 uptr internal_stat(const char *path, void *buf) {
151 DEFINE__REAL(int, __stat50, const char *a, void *b);
152 return _REAL(__stat50, path, buf);
155 uptr internal_lstat(const char *path, void *buf) {
156 DEFINE__REAL(int, __lstat50, const char *a, void *b);
157 return _REAL(__lstat50, path, buf);
160 uptr internal_fstat(fd_t fd, void *buf) {
161 DEFINE__REAL(int, __fstat50, int a, void *b);
162 return _REAL(__fstat50, fd, buf);
165 uptr internal_filesize(fd_t fd) {
167 if (internal_fstat(fd, &st))
169 return (uptr)st.st_size;
172 uptr internal_dup(int oldfd) {
173 DEFINE__REAL(int, dup, int a);
174 return _REAL(dup, oldfd);
177 uptr internal_dup2(int oldfd, int newfd) {
178 DEFINE__REAL(int, dup2, int a, int b);
179 return _REAL(dup2, oldfd, newfd);
182 uptr internal_readlink(const char *path, char *buf, uptr bufsize) {
183 CHECK(&_sys_readlink);
184 return (uptr)_sys_readlink(path, buf, bufsize);
187 uptr internal_unlink(const char *path) {
188 DEFINE__REAL(int, unlink, const char *a);
189 return _REAL(unlink, path);
192 uptr internal_rename(const char *oldpath, const char *newpath) {
193 DEFINE__REAL(int, rename, const char *a, const char *b);
194 return _REAL(rename, oldpath, newpath);
197 uptr internal_sched_yield() {
198 CHECK(&_sys_sched_yield);
199 return _sys_sched_yield();
202 void internal__exit(int exitcode) {
203 DEFINE__REAL(void, _exit, int a);
204 _REAL(_exit, exitcode);
205 Die(); // Unreachable.
208 unsigned int internal_sleep(unsigned int seconds) {
212 CHECK(&_sys___nanosleep50);
213 int res = _sys___nanosleep50(&ts, &ts);
219 uptr internal_execve(const char *filename, char *const argv[],
220 char *const envp[]) {
222 return _sys_execve(filename, argv, envp);
226 DEFINE__REAL(int, _lwp_self);
227 return _REAL(_lwp_self);
230 int TgKill(pid_t pid, tid_t tid, int sig) {
231 DEFINE__REAL(int, _lwp_kill, int a, int b);
233 return _REAL(_lwp_kill, tid, sig);
238 DEFINE__REAL(int, __gettimeofday50, void *a, void *b);
239 internal_memset(&tv, 0, sizeof(tv));
240 _REAL(__gettimeofday50, &tv, 0);
241 return (u64)tv.tv_sec * 1000 * 1000 * 1000 + tv.tv_usec * 1000;
244 uptr internal_clock_gettime(__sanitizer_clockid_t clk_id, void *tp) {
245 DEFINE__REAL(int, __clock_gettime50, __sanitizer_clockid_t a, void *b);
246 return _REAL(__clock_gettime50, clk_id, tp);
249 uptr internal_ptrace(int request, int pid, void *addr, void *data) {
250 Printf("internal_ptrace not implemented for NetBSD");
255 uptr internal_waitpid(int pid, int *status, int options) {
256 CHECK(&_sys___wait450);
257 return _sys___wait450(pid, status, options, 0 /* rusage */);
260 uptr internal_getpid() {
261 DEFINE__REAL(int, getpid);
262 return _REAL(getpid);
265 uptr internal_getppid() {
266 DEFINE__REAL(int, getppid);
267 return _REAL(getppid);
270 uptr internal_getdents(fd_t fd, void *dirp, unsigned int count) {
271 DEFINE__REAL(int, __getdents30, int a, void *b, size_t c);
272 return _REAL(__getdents30, fd, dirp, count);
275 uptr internal_lseek(fd_t fd, OFF_T offset, int whence) {
277 return __lseek(fd, 0, offset, whence);
280 uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
281 Printf("internal_prctl not implemented for NetBSD");
286 uptr internal_sigaltstack(const void *ss, void *oss) {
287 DEFINE__REAL(int, __sigaltstack14, const void *a, void *b);
288 return _REAL(__sigaltstack14, ss, oss);
291 int internal_fork() {
296 int internal_sysctl(const int *name, unsigned int namelen, void *oldp,
297 uptr *oldlenp, const void *newp, uptr newlen) {
299 return __sysctl(name, namelen, oldp, (size_t *)oldlenp, newp, (size_t)newlen);
302 int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp,
303 const void *newp, uptr newlen) {
304 DEFINE__REAL(int, sysctlbyname, const char *a, void *b, size_t *c,
305 const void *d, size_t e);
306 return _REAL(sysctlbyname, sname, oldp, (size_t *)oldlenp, newp,
310 uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
311 __sanitizer_sigset_t *oldset) {
312 CHECK(&_sys___sigprocmask14);
313 return _sys___sigprocmask14(how, set, oldset);
316 void internal_sigfillset(__sanitizer_sigset_t *set) {
317 DEFINE__REAL(int, __sigfillset14, const void *a);
318 (void)_REAL(__sigfillset14, set);
321 void internal_sigemptyset(__sanitizer_sigset_t *set) {
322 DEFINE__REAL(int, __sigemptyset14, const void *a);
323 (void)_REAL(__sigemptyset14, set);
326 uptr intrnal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg,
327 int *parent_tidptr, void *newtls, int *child_tidptr) {
328 Printf("internal_clone not implemented for NetBSD");
333 } // namespace __sanitizer