16fc3635f7
that this provokes. "Wherever possible" means "In the kernel OR NOT
C++" (implying C).
There are places where (void *) pointers are not valid, such as for
function pointers, but in the special case of (void *)0, agreement
settles on it being OK.
Most of the fixes were NULL where an integer zero was needed; many
of the fixes were NULL where ascii <nul> ('\0') was needed, and a
few were just "other".
Tested on: i386 sparc64
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/*-
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* Copyright (c) 1998 John D. Polstra
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Linkage to services provided by the dynamic linker.
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*/
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#include <dlfcn.h>
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#include <stddef.h>
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static const char sorry[] = "Service unavailable";
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/*
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* For ELF, the dynamic linker directly resolves references to its
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* services to functions inside the dynamic linker itself. These
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* weak-symbol stubs are necessary so that "ld" won't complain about
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* undefined symbols. The stubs are executed only when the program is
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* linked statically, or when a given service isn't implemented in the
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* dynamic linker. They must return an error if called, and they must
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* be weak symbols so that the dynamic linker can override them.
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*/
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#pragma weak _rtld_error
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void
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_rtld_error(const char *fmt, ...)
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{
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}
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#pragma weak dladdr
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int
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dladdr(const void *addr, Dl_info *dlip)
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{
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_rtld_error(sorry);
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return 0;
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}
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#pragma weak dlclose
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int
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dlclose(void *handle)
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{
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_rtld_error(sorry);
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return -1;
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}
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#pragma weak dlerror
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const char *
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dlerror(void)
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{
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return sorry;
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}
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#pragma weak dllockinit
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void
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dllockinit(void *context,
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void *(*lock_create)(void *context),
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void (*rlock_acquire)(void *lock),
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void (*wlock_acquire)(void *lock),
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void (*lock_release)(void *lock),
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void (*lock_destroy)(void *lock),
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void (*context_destroy)(void *context))
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{
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if (context_destroy != NULL)
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context_destroy(context);
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}
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#pragma weak dlopen
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void *
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dlopen(const char *name, int mode)
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{
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_rtld_error(sorry);
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return NULL;
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}
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#pragma weak dlsym
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void *
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dlsym(void * __restrict handle, const char * __restrict name)
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{
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_rtld_error(sorry);
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return NULL;
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}
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#pragma weak dlinfo
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int
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dlinfo(void * __restrict handle, int request, void * __restrict p)
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{
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_rtld_error(sorry);
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return 0;
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}
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#pragma weak _rtld_thread_init
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void
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_rtld_thread_init(void * li)
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{
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_rtld_error(sorry);
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}
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