glibc/dlfcn/dlfcn.h
Ulrich Drepper 8ce9ea0ca6 Update.
* dlfcn/dlfcn.h (RTLD_DEFAULT): Don't use NULL.

	* iconv/iconv.h (iconv): Fix prototype.

	* misc/libgen.h: When using gcc using renaming feature to get XPG
	definition of basename.

	* misc/search.h (struct entry): Fix type of element data.

	* posix/unistd.h (getpagesize): Declare as const function.

	* sysdeps/unix/sysv/linux/alpha/bits/sigaction.h: Define SA_NOCLDWAIT.
	* sysdeps/unix/sysv/linux/bits/sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/sigaction.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/sigaction.h: Likewise.

	* signal/signal.h [__USE_XOPEN]: Define uid_t.
	(sigstack): Correct type of first parameter.
	* sysdeps/generic/sigstack.c (sigstack): Likewise.
	* sysdeps/unix/sysv/linux/sigstack.c (sigstack): Likewise.

	* sysdeps/unix/sysv/linux/alpha/bits/siginfo.h: New file.  Copy of
	old sysdeps/unix/sysv/linux/bits/siginfo.h.
	* sysdeps/unix/sysv/linux/sparc/sparc64/bits/siginfo.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/siginfo.h [struct siginfo] (si_band):
	Change type to `long int'.

	* signal/signal.h [__USE_XOPEN]: Declare sigpause to redirect to
	__xpg_sigpause.
	* sysdeps/generic/sigpause.c: Define __xpg_sigpause.
	* sysdeps/posix/sigpause.c: Likewise.

	* conform/conformtest.pl: Correct bugs.  Add more functionality.
	* conform/data/dlfcn.h-data: Correct typos.
	* conform/data/ftw.h-data: Likewise.
	* conform/data/iconv.h-data: Likewise.
	* conform/data/nl_types.h-data: Likewise.
	* conform/data/search.h-data: Likewise.
	* conform/data/semaphore.h-data: New file.
	* conform/data/setjmp.h-data: New file.
	* conform/data/signal.h-data: New file.
	* conform/data/stdarg.h-data: New file.
	* conform/data/stddef.h-data: New file.
	* conform/data/stdio.h-data: New file.
2000-02-23 06:02:09 +00:00

101 lines
3.8 KiB
C

/* User functions for run-time dynamic loading.
Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _DLFCN_H
#define _DLFCN_H 1
#include <features.h>
/* Collect various system dependent definitions and declarations. */
#include <bits/dlfcn.h>
#ifdef __USE_GNU
/* If the first argument of `dlsym' or `dlvsym' is set to RTLD_NEXT
the run-time address of the symbol called NAME in the next shared
object is returned. The "next" relation is defined by the order
the shared objects were loaded. */
# define RTLD_NEXT ((void *) -1l)
/* If the first argument to `dlsym' or `dlvsym' is set to RTLD_DEFAULT
the run-time address of the symbol called NAME in the global scope
is returned. */
# define RTLD_DEFAULT ((void *) 0)
#endif
__BEGIN_DECLS
/* Open the shared object FILE and map it in; return a handle that can be
passed to `dlsym' to get symbol values from it. */
extern void *dlopen (__const char *__file, int __mode) __THROW;
/* Unmap and close a shared object opened by `dlopen'.
The handle cannot be used again after calling `dlclose'. */
extern int dlclose (void *__handle) __THROW;
/* Find the run-time address in the shared object HANDLE refers to
of the symbol called NAME. */
extern void *dlsym (void *__restrict __handle,
__const char *__restrict __name) __THROW;
#ifdef __USE_GNU
/* Find the run-time address in the shared object HANDLE refers to
of the symbol called NAME with VERSION. */
extern void *dlvsym (void *__restrict __handle,
__const char *__restrict __name,
__const char *__restrict __version) __THROW;
#endif
/* When any of the above functions fails, call this function
to return a string describing the error. Each call resets
the error string so that a following call returns null. */
extern char *dlerror (void) __THROW;
#ifdef __USE_GNU
/* Fill in *INFO with the following information about ADDRESS.
Returns 0 iff no shared object's segments contain that address. */
typedef struct
{
__const char *dli_fname; /* File name of defining object. */
void *dli_fbase; /* Load address of that object. */
__const char *dli_sname; /* Name of nearest symbol. */
void *dli_saddr; /* Exact value of nearest symbol. */
} Dl_info;
extern int dladdr (const void *__address, Dl_info *__info) __THROW;
/* To support profiling of shared objects it is a good idea to call
the function found using `dlsym' using the following macro since
these calls do not use the PLT. But this would mean the dynamic
loader has no chance to find out when the function is called. The
macro applies the necessary magic so that profiling is possible.
Rewrite
foo = (*fctp) (arg1, arg2);
into
foo = DL_CALL_FCT (fctp, (arg1, arg2));
*/
# define DL_CALL_FCT(fctp, args) \
(_dl_mcount_wrapper_check (fctp), (*(fctp)) args)
/* This function calls the profiling functions. */
extern void _dl_mcount_wrapper_check (void *__selfpc) __THROW;
#endif
__END_DECLS
#endif /* dlfcn.h */