/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
* Private definitions for libc, libc_r and libpthread.
*
*/
#ifndef _LIBC_PRIVATE_H_
#define _LIBC_PRIVATE_H_
#include <sys/_types.h>
#include <sys/_pthreadtypes.h>
/*
* This global flag is non-zero when a process has created one
* or more threads. It is used to avoid calling locking functions
* when they are not required.
*/
#ifndef __LIBC_ISTHREADED_DECLARED
#define __LIBC_ISTHREADED_DECLARED
extern int __isthreaded;
#endif
/*
* Elf_Auxinfo *__elf_aux_vector, the pointer to the ELF aux vector
* provided by kernel. Either set for us by rtld, or found at runtime
* on stack for static binaries.
*
* Type is void to avoid polluting whole libc with ELF types.
*/
extern void *__elf_aux_vector;
/*
* libc should use libc_dlopen internally, which respects a global
* flag where loading of new shared objects can be restricted.
*/
void *libc_dlopen(const char *, int);
/*
* For dynamic linker.
*/
void _rtld_error(const char *fmt, ...);
/*
* File lock contention is difficult to diagnose without knowing
* where locks were set. Allow a debug library to be built which
* records the source file and line number of each lock call.
*/
#ifdef _FLOCK_DEBUG
#define _FLOCKFILE(x) _flockfile_debug(x, __FILE__, __LINE__)
#else
#define _FLOCKFILE(x) _flockfile(x)
#endif
/*
* Macros for locking and unlocking FILEs. These test if the
* process is threaded to avoid locking when not required.
*/
#define FLOCKFILE(fp) if (__isthreaded) _FLOCKFILE(fp)
#define FUNLOCKFILE(fp) if (__isthreaded) _funlockfile(fp)
struct _spinlock;
extern struct _spinlock __stdio_thread_lock __hidden;
#define STDIO_THREAD_LOCK() \
do { \
if (__isthreaded) \
_SPINLOCK(&__stdio_thread_lock); \
} while (0)
#define STDIO_THREAD_UNLOCK() \
do { \
if (__isthreaded) \
_SPINUNLOCK(&__stdio_thread_lock); \
} while (0)
void __libc_spinlock_stub(struct _spinlock *);
void __libc_spinunlock_stub(struct _spinlock *);
/*
* Indexes into the pthread jump table.
*
* Warning! If you change this type, you must also change the threads
* libraries that reference it (libc_r, libpthread).
*/
typedef enum {
PJT_ATFORK,
PJT_ATTR_DESTROY,
PJT_ATTR_GETDETACHSTATE,
PJT_ATTR_GETGUARDSIZE,
PJT_ATTR_GETINHERITSCHED,
PJT_ATTR_GETSCHEDPARAM,
PJT_ATTR_GETSCHEDPOLICY,
PJT_ATTR_GETSCOPE,
PJT_ATTR_GETSTACKADDR,
PJT_ATTR_GETSTACKSIZE,
PJT_ATTR_INIT,
PJT_ATTR_SETDETACHSTATE,
PJT_ATTR_SETGUARDSIZE,
PJT_ATTR_SETINHERITSCHED,
PJT_ATTR_SETSCHEDPARAM,
PJT_ATTR_SETSCHEDPOLICY,
PJT_ATTR_SETSCOPE,
PJT_ATTR_SETSTACKADDR,
PJT_ATTR_SETSTACKSIZE,
PJT_CANCEL,
PJT_CLEANUP_POP,
PJT_CLEANUP_PUSH,
PJT_COND_BROADCAST,
PJT_COND_DESTROY,
PJT_COND_INIT,
PJT_COND_SIGNAL,
PJT_COND_TIMEDWAIT,
PJT_COND_WAIT,
PJT_DETACH,
PJT_EQUAL,
PJT_EXIT,
PJT_GETSPECIFIC,
PJT_JOIN,
PJT_KEY_CREATE,
PJT_KEY_DELETE,
PJT_KILL,
PJT_MAIN_NP,
PJT_MUTEXATTR_DESTROY,
PJT_MUTEXATTR_INIT,
PJT_MUTEXATTR_SETTYPE,
PJT_MUTEX_DESTROY,
PJT_MUTEX_INIT,
PJT_MUTEX_LOCK,
PJT_MUTEX_TRYLOCK,
PJT_MUTEX_UNLOCK,
PJT_ONCE,
PJT_RWLOCK_DESTROY,
PJT_RWLOCK_INIT,
PJT_RWLOCK_RDLOCK,
PJT_RWLOCK_TRYRDLOCK,
PJT_RWLOCK_TRYWRLOCK,
PJT_RWLOCK_UNLOCK,
PJT_RWLOCK_WRLOCK,
PJT_SELF,
PJT_SETCANCELSTATE,
PJT_SETCANCELTYPE,
PJT_SETSPECIFIC,
PJT_SIGMASK,
PJT_TESTCANCEL,
PJT_CLEANUP_POP_IMP,
PJT_CLEANUP_PUSH_IMP,
PJT_CANCEL_ENTER,
PJT_CANCEL_LEAVE,
PJT_MUTEX_CONSISTENT,
PJT_MUTEXATTR_GETROBUST,
PJT_MUTEXATTR_SETROBUST,
PJT_GETTHREADID_NP,
PJT_ATTR_GET_NP,
PJT_MAX
} pjt_index_t;
typedef int (*pthread_func_t)(void);
typedef pthread_func_t pthread_func_entry_t[2];
extern pthread_func_entry_t __thr_jtable[];
void __set_error_selector(int *(*arg)(void));
int _pthread_mutex_init_calloc_cb_stub(pthread_mutex_t *mutex,
void *(calloc_cb)(__size_t, __size_t));
typedef int (*interpos_func_t)(void);
interpos_func_t *__libc_interposing_slot(int interposno);
extern interpos_func_t __libc_interposing[] __hidden;
enum {
INTERPOS_accept,
INTERPOS_accept4,
INTERPOS_aio_suspend,
INTERPOS_close,
INTERPOS_connect,
INTERPOS_fcntl,
INTERPOS_fsync,
INTERPOS_fork,
INTERPOS_msync,
INTERPOS_nanosleep,
INTERPOS_openat,
INTERPOS_poll,
INTERPOS_pselect,
INTERPOS_recvfrom,
INTERPOS_recvmsg,
INTERPOS_select,
INTERPOS_sendmsg,
INTERPOS_sendto,
INTERPOS_setcontext,
INTERPOS_sigaction,
INTERPOS_sigprocmask,
INTERPOS_sigsuspend,
INTERPOS_sigwait,
INTERPOS_sigtimedwait,
INTERPOS_sigwaitinfo,
INTERPOS_swapcontext,
INTERPOS_system,
INTERPOS_tcdrain,
INTERPOS_read,
INTERPOS_readv,
INTERPOS_wait4,
INTERPOS_write,
INTERPOS_writev,
INTERPOS__pthread_mutex_init_calloc_cb,
INTERPOS_spinlock,
INTERPOS_spinunlock,
INTERPOS_kevent,
INTERPOS_wait6,
INTERPOS_ppoll,
INTERPOS_map_stacks_exec,
INTERPOS_fdatasync,
INTERPOS_clock_nanosleep,
INTERPOS_distribute_static_tls,
INTERPOS_pdfork,
INTERPOS_MAX
};
/*
* yplib internal interfaces
*/
#ifdef YP
int _yp_check(char **);
#endif
/*
* Initialise TLS for static programs
*/
void _init_tls(void);
/*
* Provides pthread_once()-like functionality for both single-threaded
* and multi-threaded applications.
*/
int _once(pthread_once_t *, void (*)(void));
/*
* Set the TLS thread pointer
*/
void _set_tp(void *tp);
/*
* This is a pointer in the C run-time startup code. It is used
* by getprogname() and setprogname().
*/
extern const char *__progname;
/*
* This function is used by the threading libraries to notify malloc that a
* thread is exiting.
*/
void _malloc_thread_cleanup(void);
/*
* This function is used by the threading libraries to notify libc that a
* thread is exiting, so its thread-local dtors should be called.
*/
void __cxa_thread_call_dtors(void);
int __cxa_thread_atexit_hidden(void (*dtor_func)(void *), void *obj,
void *dso_symbol) __hidden;
/*
* These functions are used by the threading libraries in order to protect
* malloc across fork().
*/
void _malloc_prefork(void);
void _malloc_postfork(void);
void _malloc_first_thread(void);
/*
* Function to clean up streams, called from abort() and exit().
*/
extern void (*__cleanup)(void) __hidden;
/*
* Get kern.osreldate to detect ABI revisions. Explicitly
* ignores value of $OSVERSION and caches result.
*/
int __getosreldate(void);
#include <sys/_types.h>
#include <sys/_sigset.h>
struct aiocb;
struct fd_set;
struct iovec;
struct kevent;
struct msghdr;
struct pollfd;
struct rusage;
struct sigaction;
struct sockaddr;
struct stat;
struct statfs;
struct timespec;
struct timeval;
struct timezone;
struct __siginfo;
struct __ucontext;
struct __wrusage;
enum idtype;
int __sys_aio_suspend(const struct aiocb * const[], int,
const struct timespec *);
int __sys_accept(int, struct sockaddr *, __socklen_t *);
int __sys_accept4(int, struct sockaddr *, __socklen_t *, int);
int __sys_clock_gettime(__clockid_t, struct timespec *ts);
int __sys_clock_nanosleep(__clockid_t, int,
const struct timespec *, struct timespec *);
int __sys_close(int);
int __sys_close_range(unsigned, unsigned, int);
int __sys_connect(int, const struct sockaddr *, __socklen_t);
int __sys_fcntl(int, int, ...);
int __sys_fdatasync(int);
int __sys_fstat(int fd, struct stat *);
int __sys_fstatfs(int fd, struct statfs *);
int __sys_fstatat(int, const char *, struct stat *, int);
int __sys_fsync(int);
__pid_t __sys_fork(void);
int __sys_ftruncate(int, __off_t);
__ssize_t __sys_getdirentries(int, char *, __size_t, __off_t *);
int __sys_getfsstat(struct statfs *, long, int);
int __sys_gettimeofday(struct timeval *, struct timezone *);
int __sys_kevent(int, const struct kevent *, int, struct kevent *,
int, const struct timespec *);
__off_t __sys_lseek(int, __off_t, int);
void *__sys_mmap(void *, __size_t, int, int, int, __off_t);
int __sys_msync(void *, __size_t, int);
int __sys_nanosleep(const struct timespec *, struct timespec *);
int __sys_open(const char *, int, ...);
int __sys_openat(int, const char *, int, ...);
int __sys_pdfork(int *, int);
int __sys_pselect(int, struct fd_set *, struct fd_set *,
struct fd_set *, const struct timespec *,
const __sigset_t *);
int __sys_ptrace(int, __pid_t, char *, int);
int __sys_poll(struct pollfd *, unsigned, int);
int __sys_ppoll(struct pollfd *, unsigned, const struct timespec *,
const __sigset_t *);
__ssize_t __sys_pread(int, void *, __size_t, __off_t);
__ssize_t __sys_pwrite(int, const void *, __size_t, __off_t);
__ssize_t __sys_read(int, void *, __size_t);
__ssize_t __sys_readv(int, const struct iovec *, int);
__ssize_t __sys_recv(int, void *, __size_t, int);
__ssize_t __sys_recvfrom(int, void *, __size_t, int, struct sockaddr *,
__socklen_t *);
__ssize_t __sys_recvmsg(int, struct msghdr *, int);
int __sys_select(int, struct fd_set *, struct fd_set *,
struct fd_set *, struct timeval *);
__ssize_t __sys_sendmsg(int, const struct msghdr *, int);
__ssize_t __sys_sendto(int, const void *, __size_t, int,
const struct sockaddr *, __socklen_t);
int __sys_setcontext(const struct __ucontext *);
int __sys_sigaction(int, const struct sigaction *,
struct sigaction *);
int __sys_sigprocmask(int, const __sigset_t *, __sigset_t *);
int __sys_sigsuspend(const __sigset_t *);
int __sys_sigtimedwait(const __sigset_t *, struct __siginfo *,
const struct timespec *);
int __sys_sigwait(const __sigset_t *, int *);
int __sys_sigwaitinfo(const __sigset_t *, struct __siginfo *);
int __sys___specialfd(int, const void *, __size_t);
int __sys_statfs(const char *, struct statfs *);
int __sys_swapcontext(struct __ucontext *,
const struct __ucontext *);
int __sys_thr_kill(long, int);
int __sys_thr_self(long *);
int __sys_truncate(const char *, __off_t);
__pid_t __sys_wait4(__pid_t, int *, int, struct rusage *);
__pid_t __sys_wait6(enum idtype, __id_t, int *, int,
struct __wrusage *, struct __siginfo *);
__ssize_t __sys_write(int, const void *, __size_t);
__ssize_t __sys_writev(int, const struct iovec *, int);
int __sys_shm_open2(const char *, int, __mode_t, int, const char *);
int __libc_sigaction(int, const struct sigaction *,
struct sigaction *) __hidden;
int __libc_sigprocmask(int, const __sigset_t *, __sigset_t *)
__hidden;
int __libc_sigsuspend(const __sigset_t *) __hidden;
int __libc_sigwait(const __sigset_t * __restrict,
int * restrict sig);
int __libc_system(const char *);
int __libc_tcdrain(int);
int __fcntl_compat(int fd, int cmd, ...);
int __sys_futimens(int fd, const struct timespec *times) __hidden;
int __sys_utimensat(int fd, const char *path,
const struct timespec *times, int flag) __hidden;
/* execve() with PATH processing to implement posix_spawnp() */
int _execvpe(const char *, char * const *, char * const *);
int _elf_aux_info(int aux, void *buf, int buflen);
struct dl_phdr_info;
int __elf_phdr_match_addr(struct dl_phdr_info *, void *);
void __init_elf_aux_vector(void);
void __libc_map_stacks_exec(void);
void __libc_distribute_static_tls(__size_t, void *, __size_t, __size_t);
__uintptr_t __libc_static_tls_base(__size_t);
void _pthread_cancel_enter(int);
void _pthread_cancel_leave(int);
struct _pthread_cleanup_info;
void ___pthread_cleanup_push_imp(void (*)(void *), void *,
struct _pthread_cleanup_info *);
void ___pthread_cleanup_pop_imp(int);
void __throw_constraint_handler_s(const char * restrict msg, int error);
struct __nl_cat_d;
struct _xlocale;
struct __nl_cat_d *__catopen_l(const char *name, int type,
struct _xlocale *locale);
#endif /* _LIBC_PRIVATE_H_ */
