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68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*-
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* Copyright (c) 2006 Joseph Koshy
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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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#include <ar.h>
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#include <assert.h>
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#include <libelf.h>
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#include "_libelf.h"
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char *
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elf_getident(Elf *e, size_t *sz)
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{
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if (e == NULL) {
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LIBELF_SET_ERROR(ARGUMENT, 0);
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goto error;
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}
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if (e->e_cmd == ELF_C_WRITE && e->e_rawfile == NULL) {
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LIBELF_SET_ERROR(SEQUENCE, 0);
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goto error;
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}
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assert(e->e_kind != ELF_K_AR || e->e_cmd == ELF_C_READ);
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if (sz) {
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if (e->e_kind == ELF_K_AR)
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*sz = SARMAG;
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else if (e->e_kind == ELF_K_ELF)
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*sz = EI_NIDENT;
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else
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*sz = e->e_rawsize;
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}
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return (e->e_rawfile);
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error:
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if (sz)
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*sz = 0;
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return (NULL);
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}
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