mirror of
https://github.com/freebsd/freebsd-src
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92771bc00a
Reviewed by: imp Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D44916
381 lines
9.9 KiB
C
381 lines
9.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Private definitions for libc, libc_r and libpthread.
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*
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*/
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#ifndef _LIBC_PRIVATE_H_
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#define _LIBC_PRIVATE_H_
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#include <sys/_types.h>
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#include <sys/_pthreadtypes.h>
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#include <libsys.h>
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extern char **environ;
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/*
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* The kernel doesn't expose PID_MAX to the user space. Save it here
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* to allow to run a newer world on a pre-1400079 kernel.
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*/
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#define _PID_MAX 99999
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/*
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* This global flag is non-zero when a process has created one
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* or more threads. It is used to avoid calling locking functions
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* when they are not required.
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*/
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#ifndef __LIBC_ISTHREADED_DECLARED
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#define __LIBC_ISTHREADED_DECLARED
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extern int __isthreaded;
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#endif
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/*
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* Elf_Auxinfo *__elf_aux_vector, the pointer to the ELF aux vector
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* provided by kernel. Either set for us by rtld, or found at runtime
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* on stack for static binaries.
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*
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* Type is void to avoid polluting whole libc with ELF types.
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*/
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extern void *__elf_aux_vector;
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/*
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* libc should use libc_dlopen internally, which respects a global
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* flag where loading of new shared objects can be restricted.
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*/
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void *libc_dlopen(const char *, int);
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/*
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* For dynamic linker.
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*/
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void _rtld_error(const char *fmt, ...);
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/*
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* File lock contention is difficult to diagnose without knowing
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* where locks were set. Allow a debug library to be built which
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* records the source file and line number of each lock call.
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*/
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#ifdef _FLOCK_DEBUG
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#define _FLOCKFILE(x) _flockfile_debug(x, __FILE__, __LINE__)
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#else
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#define _FLOCKFILE(x) _flockfile(x)
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#endif
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/*
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* Macros for locking and unlocking FILEs. These test if the
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* process is threaded to avoid locking when not required.
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*/
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#define FLOCKFILE(fp) if (__isthreaded) _FLOCKFILE(fp)
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#define FUNLOCKFILE(fp) if (__isthreaded) _funlockfile(fp)
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struct _spinlock;
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extern struct _spinlock __stdio_thread_lock __hidden;
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#define STDIO_THREAD_LOCK() \
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do { \
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if (__isthreaded) \
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_SPINLOCK(&__stdio_thread_lock); \
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} while (0)
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#define STDIO_THREAD_UNLOCK() \
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do { \
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if (__isthreaded) \
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_SPINUNLOCK(&__stdio_thread_lock); \
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} while (0)
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void __libc_spinlock_stub(struct _spinlock *);
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void __libc_spinunlock_stub(struct _spinlock *);
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/*
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* Indexes into the pthread jump table.
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*
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* Warning! If you change this type, you must also change the threads
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* libraries that reference it (libc_r, libpthread).
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*/
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typedef enum {
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PJT_ATFORK,
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PJT_ATTR_DESTROY,
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PJT_ATTR_GETDETACHSTATE,
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PJT_ATTR_GETGUARDSIZE,
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PJT_ATTR_GETINHERITSCHED,
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PJT_ATTR_GETSCHEDPARAM,
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PJT_ATTR_GETSCHEDPOLICY,
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PJT_ATTR_GETSCOPE,
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PJT_ATTR_GETSTACKADDR,
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PJT_ATTR_GETSTACKSIZE,
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PJT_ATTR_INIT,
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PJT_ATTR_SETDETACHSTATE,
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PJT_ATTR_SETGUARDSIZE,
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PJT_ATTR_SETINHERITSCHED,
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PJT_ATTR_SETSCHEDPARAM,
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PJT_ATTR_SETSCHEDPOLICY,
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PJT_ATTR_SETSCOPE,
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PJT_ATTR_SETSTACKADDR,
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PJT_ATTR_SETSTACKSIZE,
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PJT_CANCEL,
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PJT_CLEANUP_POP,
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PJT_CLEANUP_PUSH,
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PJT_COND_BROADCAST,
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PJT_COND_DESTROY,
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PJT_COND_INIT,
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PJT_COND_SIGNAL,
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PJT_COND_TIMEDWAIT,
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PJT_COND_WAIT,
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PJT_DETACH,
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PJT_EQUAL,
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PJT_EXIT,
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PJT_GETSPECIFIC,
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PJT_JOIN,
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PJT_KEY_CREATE,
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PJT_KEY_DELETE,
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PJT_KILL,
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PJT_MAIN_NP,
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PJT_MUTEXATTR_DESTROY,
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PJT_MUTEXATTR_INIT,
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PJT_MUTEXATTR_SETTYPE,
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PJT_MUTEX_DESTROY,
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PJT_MUTEX_INIT,
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PJT_MUTEX_LOCK,
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PJT_MUTEX_TRYLOCK,
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PJT_MUTEX_UNLOCK,
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PJT_ONCE,
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PJT_RWLOCK_DESTROY,
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PJT_RWLOCK_INIT,
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PJT_RWLOCK_RDLOCK,
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PJT_RWLOCK_TRYRDLOCK,
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PJT_RWLOCK_TRYWRLOCK,
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PJT_RWLOCK_UNLOCK,
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PJT_RWLOCK_WRLOCK,
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PJT_SELF,
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PJT_SETCANCELSTATE,
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PJT_SETCANCELTYPE,
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PJT_SETSPECIFIC,
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PJT_SIGMASK,
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PJT_TESTCANCEL,
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PJT_CLEANUP_POP_IMP,
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PJT_CLEANUP_PUSH_IMP,
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PJT_CANCEL_ENTER,
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PJT_CANCEL_LEAVE,
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PJT_MUTEX_CONSISTENT,
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PJT_MUTEXATTR_GETROBUST,
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PJT_MUTEXATTR_SETROBUST,
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PJT_GETTHREADID_NP,
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PJT_ATTR_GET_NP,
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PJT_GETNAME_NP,
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PJT_MAX
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} pjt_index_t;
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typedef int (*pthread_func_t)(void);
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typedef pthread_func_t pthread_func_entry_t[2];
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extern pthread_func_entry_t __thr_jtable[];
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void __set_error_selector(int *(*arg)(void));
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int _pthread_mutex_init_calloc_cb_stub(pthread_mutex_t *mutex,
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void *(calloc_cb)(__size_t, __size_t));
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typedef int (*interpos_func_t)(void);
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interpos_func_t *__libc_interposing_slot(int interposno);
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extern interpos_func_t __libc_interposing[] __hidden;
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interpos_func_t *__libsys_interposing_slot(int interposno);
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enum {
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INTERPOS_accept,
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INTERPOS_accept4,
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INTERPOS_aio_suspend,
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INTERPOS_close,
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INTERPOS_connect,
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INTERPOS_fcntl,
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INTERPOS_fsync,
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INTERPOS_fork,
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INTERPOS_msync,
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INTERPOS_nanosleep,
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INTERPOS_openat,
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INTERPOS_poll,
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INTERPOS_pselect,
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INTERPOS_recvfrom,
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INTERPOS_recvmsg,
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INTERPOS_select,
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INTERPOS_sendmsg,
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INTERPOS_sendto,
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INTERPOS_setcontext,
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INTERPOS_sigaction,
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INTERPOS_sigprocmask,
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INTERPOS_sigsuspend,
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INTERPOS_sigwait,
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INTERPOS_sigtimedwait,
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INTERPOS_sigwaitinfo,
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INTERPOS_swapcontext,
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INTERPOS_system,
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INTERPOS_tcdrain,
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INTERPOS_read,
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INTERPOS_readv,
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INTERPOS_wait4,
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INTERPOS_write,
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INTERPOS_writev,
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INTERPOS__pthread_mutex_init_calloc_cb,
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INTERPOS_spinlock,
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INTERPOS_spinunlock,
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INTERPOS_kevent,
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INTERPOS_wait6,
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INTERPOS_ppoll,
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INTERPOS_map_stacks_exec,
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INTERPOS_fdatasync,
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INTERPOS_clock_nanosleep,
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INTERPOS_distribute_static_tls,
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INTERPOS_pdfork,
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INTERPOS_MAX
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};
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#define _INTERPOS_SYS(type, idx, ...) \
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((type *)*(__libc_interposing_slot(idx)))(__VA_ARGS__)
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#define INTERPOS_SYS(syscall, ...) \
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_INTERPOS_SYS(__sys_## syscall ##_t, INTERPOS_## syscall \
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__VA_OPT__(,) __VA_ARGS__)
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/*
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* yplib internal interfaces
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*/
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#ifdef YP
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int _yp_check(char **);
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#endif
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void __libc_start1(int, char *[], char *[],
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void (*)(void), int (*)(int, char *[], char *[])) __dead2;
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void __libc_start1_gcrt(int, char *[], char *[],
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void (*)(void), int (*)(int, char *[], char *[]),
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int *, int *) __dead2;
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/*
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* Initialise TLS for static programs
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*/
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void _init_tls(void);
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/*
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* Provides pthread_once()-like functionality for both single-threaded
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* and multi-threaded applications.
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*/
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int _once(pthread_once_t *, void (*)(void));
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/*
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* This is a pointer in the C run-time startup code. It is used
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* by getprogname() and setprogname().
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*/
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extern const char *__progname;
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/*
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* This function is used by the threading libraries to notify malloc that a
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* thread is exiting.
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*/
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void _malloc_thread_cleanup(void);
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/*
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* This function is used by the threading libraries to notify libc that a
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* thread is exiting, so its thread-local dtors should be called.
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*/
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void __cxa_thread_call_dtors(void);
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int __cxa_thread_atexit_hidden(void (*dtor_func)(void *), void *obj,
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void *dso_symbol) __hidden;
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/*
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* These functions are used by the threading libraries in order to protect
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* malloc across fork().
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*/
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void _malloc_prefork(void);
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void _malloc_postfork(void);
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void _malloc_first_thread(void);
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/*
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* Function to clean up streams, called from abort() and exit().
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*/
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extern void (*__cleanup)(void) __hidden;
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/*
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* Get kern.osreldate to detect ABI revisions. Explicitly
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* ignores value of $OSVERSION and caches result.
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*/
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int __getosreldate(void);
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#include <sys/_types.h>
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#include <sys/_sigset.h>
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struct aiocb;
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struct fd_set;
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struct iovec;
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struct kevent;
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struct msghdr;
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struct pollfd;
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struct rusage;
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struct sigaction;
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struct sockaddr;
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struct stat;
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struct statfs;
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struct timespec;
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struct timeval;
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struct timezone;
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struct __siginfo;
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struct __ucontext;
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struct __wrusage;
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enum idtype;
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int __libc_sigaction(int, const struct sigaction *,
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struct sigaction *) __hidden;
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int __libc_sigprocmask(int, const __sigset_t *, __sigset_t *)
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__hidden;
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int __libc_sigsuspend(const __sigset_t *) __hidden;
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int __libsys_sigwait(const __sigset_t *, int *) __hidden;
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int __libc_system(const char *);
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int __libc_tcdrain(int);
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int _elf_aux_info(int aux, void *buf, int buflen);
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struct dl_phdr_info;
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int __elf_phdr_match_addr(struct dl_phdr_info *, void *);
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void __init_elf_aux_vector(void);
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void __libc_map_stacks_exec(void);
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void __libc_distribute_static_tls(__size_t, void *, __size_t, __size_t);
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__uintptr_t __libc_static_tls_base(__size_t);
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void _pthread_cancel_enter(int);
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void _pthread_cancel_leave(int);
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struct _pthread_cleanup_info;
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void ___pthread_cleanup_push_imp(void (*)(void *), void *,
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struct _pthread_cleanup_info *);
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void ___pthread_cleanup_pop_imp(int);
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void __throw_constraint_handler_s(const char * restrict msg, int error);
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struct __nl_cat_d;
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struct _xlocale;
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struct __nl_cat_d *__catopen_l(const char *name, int type,
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struct _xlocale *locale);
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int __strerror_rl(int errnum, char *strerrbuf, size_t buflen,
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struct _xlocale *locale);
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#endif /* _LIBC_PRIVATE_H_ */
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