101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
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/*-
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* Copyright (c) 2016 Kai Wang
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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 <errno.h>
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#include "_libpe.h"
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ELFTC_VCSID("$Id: pe_buffer.c 3312 2016-01-10 09:23:51Z kaiwang27 $");
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PE_Buffer *
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pe_getbuffer(PE_Scn *ps, PE_Buffer *pb)
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{
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PE *pe;
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PE_SecBuf *sb;
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if (ps == NULL) {
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errno = EINVAL;
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return (NULL);
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}
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pe = ps->ps_pe;
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if ((ps->ps_flags & LIBPE_F_LOAD_SECTION) == 0) {
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if (pe->pe_flags & LIBPE_F_FD_DONE) {
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errno = EACCES;
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return (NULL);
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}
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if (pe->pe_flags & LIBPE_F_SPECIAL_FILE) {
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if (libpe_load_all_sections(pe) < 0)
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return (NULL);
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} else {
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if (libpe_load_section(pe, ps) < 0)
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return (NULL);
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}
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}
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sb = (PE_SecBuf *) pb;
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if (sb == NULL)
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sb = STAILQ_FIRST(&ps->ps_b);
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else
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sb = STAILQ_NEXT(sb, sb_next);
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return ((PE_Buffer *) sb);
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}
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PE_Buffer *
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pe_newbuffer(PE_Scn *ps)
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{
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PE *pe;
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PE_SecBuf *sb;
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if (ps == NULL) {
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errno = EINVAL;
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return (NULL);
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}
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pe = ps->ps_pe;
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if (pe->pe_flags & LIBPE_F_FD_DONE) {
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errno = EACCES;
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return (NULL);
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}
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if ((ps->ps_flags & LIBPE_F_LOAD_SECTION) == 0) {
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if (libpe_load_section(pe, ps) < 0)
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return (NULL);
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}
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if ((sb = libpe_alloc_buffer(ps, 0)) == NULL)
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return (NULL);
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sb->sb_flags |= PE_F_DIRTY;
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ps->ps_flags |= PE_F_DIRTY;
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return ((PE_Buffer *) sb);
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}
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