135124Sjb/* 235124Sjb * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>. 335124Sjb * All rights reserved. 435124Sjb * 535124Sjb * Redistribution and use in source and binary forms, with or without 635124Sjb * modification, are permitted provided that the following conditions 735124Sjb * are met: 835124Sjb * 1. Redistributions of source code must retain the above copyright 935124Sjb * notice, this list of conditions and the following disclaimer. 1035124Sjb * 2. Redistributions in binary form must reproduce the above copyright 1135124Sjb * notice, this list of conditions and the following disclaimer in the 1235124Sjb * documentation and/or other materials provided with the distribution. 13165968Simp * 3. Neither the name of the author nor the names of any co-contributors 1435124Sjb * may be used to endorse or promote products derived from this software 1535124Sjb * without specific prior written permission. 1635124Sjb * 1735124Sjb * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 1835124Sjb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1935124Sjb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2035124Sjb * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2135124Sjb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2235124Sjb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2335124Sjb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2435124Sjb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2535124Sjb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2635124Sjb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2735124Sjb * SUCH DAMAGE. 2835124Sjb * 2950476Speter * $FreeBSD: releng/10.2/lib/libc/include/libc_private.h 287872 2015-09-16 20:59:41Z delphij $ 3035124Sjb * 3135124Sjb * Private definitions for libc, libc_r and libpthread. 3235124Sjb * 3335124Sjb */ 3435124Sjb 3535124Sjb#ifndef _LIBC_PRIVATE_H_ 3635124Sjb#define _LIBC_PRIVATE_H_ 37237434Skib#include <sys/_types.h> 38199606Sjhb#include <sys/_pthreadtypes.h> 3935124Sjb 4035124Sjb/* 4135124Sjb * This global flag is non-zero when a process has created one 4235124Sjb * or more threads. It is used to avoid calling locking functions 4335124Sjb * when they are not required. 4435124Sjb */ 4535124Sjbextern int __isthreaded; 4635124Sjb 4735124Sjb/* 48231868Skib * Elf_Auxinfo *__elf_aux_vector, the pointer to the ELF aux vector 49231868Skib * provided by kernel. Either set for us by rtld, or found at runtime 50231868Skib * on stack for static binaries. 51231868Skib * 52231868Skib * Type is void to avoid polluting whole libc with ELF types. 53231868Skib */ 54231868Skibextern void *__elf_aux_vector; 55231868Skib 56231868Skib/* 57228843Scperciva * libc should use libc_dlopen internally, which respects a global 58228843Scperciva * flag where loading of new shared objects can be restricted. 59228843Scperciva */ 60228843Scpercivavoid *libc_dlopen(const char *, int); 61228843Scperciva 62228843Scperciva/* 63228843Scperciva * For dynamic linker. 64228843Scperciva */ 65228843Scpercivavoid _rtld_error(const char *fmt, ...); 66228843Scperciva 67228843Scperciva/* 6835124Sjb * File lock contention is difficult to diagnose without knowing 6935124Sjb * where locks were set. Allow a debug library to be built which 7035124Sjb * records the source file and line number of each lock call. 7135124Sjb */ 7235124Sjb#ifdef _FLOCK_DEBUG 7335124Sjb#define _FLOCKFILE(x) _flockfile_debug(x, __FILE__, __LINE__) 7435124Sjb#else 7571579Sdeischen#define _FLOCKFILE(x) _flockfile(x) 7635124Sjb#endif 7735124Sjb 7835124Sjb/* 7935124Sjb * Macros for locking and unlocking FILEs. These test if the 8035124Sjb * process is threaded to avoid locking when not required. 8135124Sjb */ 8235124Sjb#define FLOCKFILE(fp) if (__isthreaded) _FLOCKFILE(fp) 8371579Sdeischen#define FUNLOCKFILE(fp) if (__isthreaded) _funlockfile(fp) 8435124Sjb 85234657Skibstruct _spinlock; 86254706Sjillesextern struct _spinlock __stdio_thread_lock __hidden; 87234657Skib#define STDIO_THREAD_LOCK() \ 88234657Skibdo { \ 89234657Skib if (__isthreaded) \ 90234657Skib _SPINLOCK(&__stdio_thread_lock); \ 91234657Skib} while (0) 92234657Skib#define STDIO_THREAD_UNLOCK() \ 93234657Skibdo { \ 94234657Skib if (__isthreaded) \ 95234657Skib _SPINUNLOCK(&__stdio_thread_lock); \ 96234657Skib} while (0) 97234657Skib 98278875Skibvoid __libc_spinlock_stub(struct _spinlock *); 99278875Skibvoid __libc_spinunlock_stub(struct _spinlock *); 100278875Skib 10193399Smarkm/* 102106866Sdeischen * Indexes into the pthread jump table. 103106866Sdeischen * 104106866Sdeischen * Warning! If you change this type, you must also change the threads 105106866Sdeischen * libraries that reference it (libc_r, libpthread). 106106866Sdeischen */ 107106866Sdeischentypedef enum { 108156319Sdeischen PJT_ATFORK, 109156319Sdeischen PJT_ATTR_DESTROY, 110156319Sdeischen PJT_ATTR_GETDETACHSTATE, 111156319Sdeischen PJT_ATTR_GETGUARDSIZE, 112156319Sdeischen PJT_ATTR_GETINHERITSCHED, 113156319Sdeischen PJT_ATTR_GETSCHEDPARAM, 114156319Sdeischen PJT_ATTR_GETSCHEDPOLICY, 115156319Sdeischen PJT_ATTR_GETSCOPE, 116156319Sdeischen PJT_ATTR_GETSTACKADDR, 117156319Sdeischen PJT_ATTR_GETSTACKSIZE, 118156319Sdeischen PJT_ATTR_INIT, 119156319Sdeischen PJT_ATTR_SETDETACHSTATE, 120156319Sdeischen PJT_ATTR_SETGUARDSIZE, 121156319Sdeischen PJT_ATTR_SETINHERITSCHED, 122156319Sdeischen PJT_ATTR_SETSCHEDPARAM, 123156319Sdeischen PJT_ATTR_SETSCHEDPOLICY, 124156319Sdeischen PJT_ATTR_SETSCOPE, 125156319Sdeischen PJT_ATTR_SETSTACKADDR, 126156319Sdeischen PJT_ATTR_SETSTACKSIZE, 127156319Sdeischen PJT_CANCEL, 128156319Sdeischen PJT_CLEANUP_POP, 129156319Sdeischen PJT_CLEANUP_PUSH, 130106866Sdeischen PJT_COND_BROADCAST, 131106866Sdeischen PJT_COND_DESTROY, 132106866Sdeischen PJT_COND_INIT, 133106866Sdeischen PJT_COND_SIGNAL, 134156319Sdeischen PJT_COND_TIMEDWAIT, 135106866Sdeischen PJT_COND_WAIT, 136156319Sdeischen PJT_DETACH, 137156319Sdeischen PJT_EQUAL, 138156319Sdeischen PJT_EXIT, 139106866Sdeischen PJT_GETSPECIFIC, 140156319Sdeischen PJT_JOIN, 141106866Sdeischen PJT_KEY_CREATE, 142106866Sdeischen PJT_KEY_DELETE, 143156319Sdeischen PJT_KILL, 144106866Sdeischen PJT_MAIN_NP, 145156319Sdeischen PJT_MUTEXATTR_DESTROY, 146156319Sdeischen PJT_MUTEXATTR_INIT, 147156319Sdeischen PJT_MUTEXATTR_SETTYPE, 148106866Sdeischen PJT_MUTEX_DESTROY, 149106866Sdeischen PJT_MUTEX_INIT, 150106866Sdeischen PJT_MUTEX_LOCK, 151106866Sdeischen PJT_MUTEX_TRYLOCK, 152106866Sdeischen PJT_MUTEX_UNLOCK, 153106866Sdeischen PJT_ONCE, 154106866Sdeischen PJT_RWLOCK_DESTROY, 155106866Sdeischen PJT_RWLOCK_INIT, 156106866Sdeischen PJT_RWLOCK_RDLOCK, 157106866Sdeischen PJT_RWLOCK_TRYRDLOCK, 158106866Sdeischen PJT_RWLOCK_TRYWRLOCK, 159106866Sdeischen PJT_RWLOCK_UNLOCK, 160106866Sdeischen PJT_RWLOCK_WRLOCK, 161106866Sdeischen PJT_SELF, 162156319Sdeischen PJT_SETCANCELSTATE, 163156319Sdeischen PJT_SETCANCELTYPE, 164106866Sdeischen PJT_SETSPECIFIC, 165106866Sdeischen PJT_SIGMASK, 166156319Sdeischen PJT_TESTCANCEL, 167201546Sdavidxu PJT_CLEANUP_POP_IMP, 168201546Sdavidxu PJT_CLEANUP_PUSH_IMP, 169213153Sdavidxu PJT_CANCEL_ENTER, 170213153Sdavidxu PJT_CANCEL_LEAVE, 171106866Sdeischen PJT_MAX 172106866Sdeischen} pjt_index_t; 173106866Sdeischen 174106870Sdeischentypedef int (*pthread_func_t)(void); 175106880Sdeischentypedef pthread_func_t pthread_func_entry_t[2]; 176106866Sdeischen 177106880Sdeischenextern pthread_func_entry_t __thr_jtable[]; 178106866Sdeischen 179277317Skibvoid __set_error_selector(int *(*arg)(void)); 180277317Skibint _pthread_mutex_init_calloc_cb_stub(pthread_mutex_t *mutex, 181277317Skib void *(calloc_cb)(__size_t, __size_t)); 182277317Skib 183277317Skibtypedef int (*interpos_func_t)(void); 184277317Skibinterpos_func_t *__libc_interposing_slot(int interposno); 185277317Skibextern interpos_func_t __libc_interposing[] __hidden; 186277317Skib 187277317Skibenum { 188277317Skib INTERPOS_accept, 189277317Skib INTERPOS_accept4, 190277317Skib INTERPOS_aio_suspend, 191277317Skib INTERPOS_close, 192277317Skib INTERPOS_connect, 193277317Skib INTERPOS_fcntl, 194277317Skib INTERPOS_fsync, 195277317Skib INTERPOS_fork, 196277317Skib INTERPOS_msync, 197277317Skib INTERPOS_nanosleep, 198277317Skib INTERPOS_openat, 199277317Skib INTERPOS_poll, 200277317Skib INTERPOS_pselect, 201277317Skib INTERPOS_recvfrom, 202277317Skib INTERPOS_recvmsg, 203277317Skib INTERPOS_select, 204277317Skib INTERPOS_sendmsg, 205277317Skib INTERPOS_sendto, 206277317Skib INTERPOS_setcontext, 207277317Skib INTERPOS_sigaction, 208277317Skib INTERPOS_sigprocmask, 209277317Skib INTERPOS_sigsuspend, 210277317Skib INTERPOS_sigwait, 211277317Skib INTERPOS_sigtimedwait, 212277317Skib INTERPOS_sigwaitinfo, 213277317Skib INTERPOS_swapcontext, 214277317Skib INTERPOS_system, 215277317Skib INTERPOS_tcdrain, 216277317Skib INTERPOS_read, 217277317Skib INTERPOS_readv, 218277317Skib INTERPOS_wait4, 219277317Skib INTERPOS_write, 220277317Skib INTERPOS_writev, 221277317Skib INTERPOS__pthread_mutex_init_calloc_cb, 222278875Skib INTERPOS_spinlock, 223278875Skib INTERPOS_spinunlock, 224281454Skib INTERPOS_kevent, 225281981Skib INTERPOS_wait6, 226281981Skib INTERPOS_ppoll, 227277317Skib INTERPOS_MAX 228277317Skib}; 229277317Skib 230106866Sdeischen/* 231111618Snectar * yplib internal interfaces 232111618Snectar */ 233111618Snectar#ifdef YP 234111618Snectarint _yp_check(char **); 235111618Snectar#endif 236111618Snectar 237133754Sdfr/* 238133754Sdfr * Initialise TLS for static programs 239133754Sdfr */ 240133754Sdfrvoid _init_tls(void); 241111618Snectar 242111618Snectar/* 243199606Sjhb * Provides pthread_once()-like functionality for both single-threaded 244199606Sjhb * and multi-threaded applications. 245199606Sjhb */ 246199606Sjhbint _once(pthread_once_t *, void (*)(void)); 247199606Sjhb 248199606Sjhb/* 249133754Sdfr * Set the TLS thread pointer 250133754Sdfr */ 251133754Sdfrvoid _set_tp(void *tp); 252133754Sdfr 253133754Sdfr/* 25493399Smarkm * This is a pointer in the C run-time startup code. It is used 25593399Smarkm * by getprogname() and setprogname(). 25693399Smarkm */ 25793399Smarkmextern const char *__progname; 25893399Smarkm 259122069Sdeischen/* 260182225Sjasone * This function is used by the threading libraries to notify malloc that a 261182225Sjasone * thread is exiting. 262182225Sjasone */ 263182225Sjasonevoid _malloc_thread_cleanup(void); 264182225Sjasone 265182225Sjasone/* 266154248Sjasone * These functions are used by the threading libraries in order to protect 267154248Sjasone * malloc across fork(). 268122069Sdeischen */ 269154248Sjasonevoid _malloc_prefork(void); 270154248Sjasonevoid _malloc_postfork(void); 271122069Sdeischen 272277317Skibvoid _malloc_first_thread(void); 273277317Skib 274150040Sstefanf/* 275150040Sstefanf * Function to clean up streams, called from abort() and exit(). 276150040Sstefanf */ 277279049Skibextern void (*__cleanup)(void) __hidden; 278150040Sstefanf 279171219Speter/* 280171219Speter * Get kern.osreldate to detect ABI revisions. Explicitly 281171219Speter * ignores value of $OSVERSION and caches result. Prototypes 282171219Speter * for the wrapped "new" pad-less syscalls are here for now. 283171219Speter */ 284277317Skibint __getosreldate(void); 285171219Speter#include <sys/_types.h> 286277317Skib#include <sys/_sigset.h> 287171219Speter 288171219Speter/* With pad */ 289277317Skib__off_t __sys_freebsd6_lseek(int, int, __off_t, int); 290277317Skibint __sys_freebsd6_ftruncate(int, int, __off_t); 291277317Skibint __sys_freebsd6_truncate(const char *, int, __off_t); 292277317Skib__ssize_t __sys_freebsd6_pread(int, void *, __size_t, int, __off_t); 293277317Skib__ssize_t __sys_freebsd6_pwrite(int, const void *, __size_t, int, __off_t); 294277317Skibvoid * __sys_freebsd6_mmap(void *, __size_t, int, int, int, int, __off_t); 295171219Speter 296277317Skibstruct aiocb; 297277317Skibstruct fd_set; 298277317Skibstruct iovec; 299281454Skibstruct kevent; 300277317Skibstruct msghdr; 301277317Skibstruct pollfd; 302277317Skibstruct rusage; 303277317Skibstruct sigaction; 304277317Skibstruct sockaddr; 305237434Skibstruct timespec; 306237434Skibstruct timeval; 307237434Skibstruct timezone; 308277317Skibstruct __siginfo; 309277317Skibstruct __ucontext; 310281981Skibstruct __wrusage; 311281981Skibenum idtype; 312277317Skibint __sys_aio_suspend(const struct aiocb * const[], int, 313277317Skib const struct timespec *); 314277317Skibint __sys_accept(int, struct sockaddr *, __socklen_t *); 315277317Skibint __sys_accept4(int, struct sockaddr *, __socklen_t *, int); 316277317Skibint __sys_clock_gettime(__clockid_t, struct timespec *ts); 317277317Skibint __sys_close(int); 318277317Skibint __sys_connect(int, const struct sockaddr *, __socklen_t); 319277317Skibint __sys_fcntl(int, int, ...); 320277317Skibint __sys_fsync(int); 321277317Skib__pid_t __sys_fork(void); 322277317Skibint __sys_ftruncate(int, __off_t); 323277317Skibint __sys_gettimeofday(struct timeval *, struct timezone *); 324281454Skibint __sys_kevent(int, const struct kevent *, int, struct kevent *, 325281454Skib int, const struct timespec *); 326277317Skib__off_t __sys_lseek(int, __off_t, int); 327277317Skibvoid *__sys_mmap(void *, __size_t, int, int, int, __off_t); 328277317Skibint __sys_msync(void *, __size_t, int); 329277317Skibint __sys_nanosleep(const struct timespec *, struct timespec *); 330277317Skibint __sys_open(const char *, int, ...); 331277317Skibint __sys_openat(int, const char *, int, ...); 332277317Skibint __sys_pselect(int, struct fd_set *, struct fd_set *, 333277317Skib struct fd_set *, const struct timespec *, 334277317Skib const __sigset_t *); 335277317Skibint __sys_poll(struct pollfd *, unsigned, int); 336281981Skibint __sys_ppoll(struct pollfd *, unsigned, const struct timespec *, 337281981Skib const __sigset_t *); 338277317Skib__ssize_t __sys_pread(int, void *, __size_t, __off_t); 339277317Skib__ssize_t __sys_pwrite(int, const void *, __size_t, __off_t); 340277317Skib__ssize_t __sys_read(int, void *, __size_t); 341277317Skib__ssize_t __sys_readv(int, const struct iovec *, int); 342277317Skib__ssize_t __sys_recv(int, void *, __size_t, int); 343277317Skib__ssize_t __sys_recvfrom(int, void *, __size_t, int, struct sockaddr *, 344277317Skib __socklen_t *); 345277317Skib__ssize_t __sys_recvmsg(int, struct msghdr *, int); 346277317Skibint __sys_select(int, struct fd_set *, struct fd_set *, 347277317Skib struct fd_set *, struct timeval *); 348277317Skib__ssize_t __sys_sendmsg(int, const struct msghdr *, int); 349277317Skib__ssize_t __sys_sendto(int, const void *, __size_t, int, 350277317Skib const struct sockaddr *, __socklen_t); 351277317Skibint __sys_setcontext(const struct __ucontext *); 352277317Skibint __sys_sigaction(int, const struct sigaction *, 353277317Skib struct sigaction *); 354277317Skibint __sys_sigprocmask(int, const __sigset_t *, __sigset_t *); 355277317Skibint __sys_sigsuspend(const __sigset_t *); 356277317Skibint __sys_sigtimedwait(const __sigset_t *, struct __siginfo *, 357277317Skib const struct timespec *); 358277317Skibint __sys_sigwait(const __sigset_t *, int *); 359277317Skibint __sys_sigwaitinfo(const __sigset_t *, struct __siginfo *); 360277317Skibint __sys_swapcontext(struct __ucontext *, 361277317Skib const struct __ucontext *); 362277317Skibint __sys_thr_kill(long, int); 363277317Skibint __sys_thr_self(long *); 364277317Skibint __sys_truncate(const char *, __off_t); 365277317Skib__pid_t __sys_wait4(__pid_t, int *, int, struct rusage *); 366281981Skib__pid_t __sys_wait6(enum idtype, __id_t, int *, int, 367281981Skib struct __wrusage *, struct __siginfo *); 368277317Skib__ssize_t __sys_write(int, const void *, __size_t); 369277317Skib__ssize_t __sys_writev(int, const struct iovec *, int); 370237434Skib 371287872Sdelphijint __libc_sigaction(int, const struct sigaction *, 372287872Sdelphij struct sigaction *) __hidden; 373287872Sdelphijint __libc_sigprocmask(int, const __sigset_t *, __sigset_t *) 374287872Sdelphij __hidden; 375287872Sdelphijint __libc_sigsuspend(const __sigset_t *) __hidden; 376277317Skibint __libc_sigwait(const __sigset_t * __restrict, 377277317Skib int * restrict sig); 378277317Skibint __libc_system(const char *); 379277317Skibint __libc_tcdrain(int); 380277317Skibint __fcntl_compat(int fd, int cmd, ...); 381277317Skib 382179947Sed/* execve() with PATH processing to implement posix_spawnp() */ 383179947Sedint _execvpe(const char *, char * const *, char * const *); 384179947Sed 385211416Skibint _elf_aux_info(int aux, void *buf, int buflen); 386211706Skibstruct dl_phdr_info; 387211706Skibint __elf_phdr_match_addr(struct dl_phdr_info *, void *); 388231868Skibvoid __init_elf_aux_vector(void); 389211416Skib 390213153Sdavidxuvoid _pthread_cancel_enter(int); 391213153Sdavidxuvoid _pthread_cancel_leave(int); 392213153Sdavidxu 39335124Sjb#endif /* _LIBC_PRIVATE_H_ */ 394