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451dc2b7cc
Instead of specifying the main name part of the environment variable as the string literal, create array of the var names and access them by symbolic index. Convert main name parts into complete names by prefixing with ABI-specific ld_env_vars. This way the name is not repeated, and also it can carry additional proporties explicitly. For instance, cleanup of the environment for the setuid image does not require retyping all names. Reviewed by: arichardson, markj MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D31545
90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1999, 2000 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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* $FreeBSD$
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*/
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#ifndef RTLD_MACHDEP_H
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#define RTLD_MACHDEP_H 1
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#include <sys/types.h>
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#include <machine/atomic.h>
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#include <machine/acle-compat.h>
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struct Struct_Obj_Entry;
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/* Return the address of the .dynamic section in the dynamic linker. */
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#define rtld_dynamic(obj) (&_DYNAMIC)
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Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
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const struct Struct_Obj_Entry *defobj, const struct Struct_Obj_Entry *obj,
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const Elf_Rel *rel);
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#define make_function_pointer(def, defobj) \
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((defobj)->relocbase + (def)->st_value)
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#define call_initfini_pointer(obj, target) \
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(((InitFunc)(target))())
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#define call_init_pointer(obj, target) \
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(((InitArrFunc)(target))(main_argc, main_argv, environ))
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#define call_ifunc_resolver(ptr) \
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(((Elf_Addr (*)(void))ptr)())
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#define TLS_TCB_SIZE 8
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typedef struct {
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unsigned long ti_module;
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unsigned long ti_offset;
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} tls_index;
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#define round(size, align) \
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(((size) + (align) - 1) & ~((align) - 1))
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#define calculate_first_tls_offset(size, align, offset) \
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round(8, align)
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#define calculate_tls_offset(prev_offset, prev_size, size, align, offset) \
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round(prev_offset + prev_size, align)
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#define calculate_tls_post_size(align) \
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round(TLS_TCB_SIZE, align) - TLS_TCB_SIZE
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extern void *__tls_get_addr(tls_index *ti);
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#define RTLD_DEFAULT_STACK_PF_EXEC PF_X
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#define RTLD_DEFAULT_STACK_EXEC PROT_EXEC
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extern void arm_abi_variant_hook(Elf_Auxinfo **);
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#ifdef __ARM_FP
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#define md_abi_variant_hook(x) arm_abi_variant_hook(x)
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#else
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#define md_abi_variant_hook(x)
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#endif
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#define TLS_VARIANT_I 1
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#define TLS_DTV_OFFSET 0
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#endif
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