87 lines
2.4 KiB
C
87 lines
2.4 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 <assert.h>
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#include <errno.h>
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#include <unistd.h>
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#include "_libpe.h"
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ELFTC_VCSID("$Id: pe_update.c 3312 2016-01-10 09:23:51Z kaiwang27 $");
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off_t
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pe_update(PE *pe)
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{
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off_t off;
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if (pe == NULL) {
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errno = EINVAL;
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return (-1);
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}
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if (pe->pe_cmd == PE_C_READ || pe->pe_flags & LIBPE_F_FD_DONE) {
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errno = EACCES;
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return (-1);
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}
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if (pe->pe_cmd == PE_C_RDWR || (pe->pe_cmd == PE_C_WRITE &&
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(pe->pe_flags & LIBPE_F_SPECIAL_FILE) == 0)) {
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if (lseek(pe->pe_fd, 0, SEEK_SET) < 0) {
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errno = EIO;
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return (-1);
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}
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}
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off = 0;
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if (pe->pe_obj == PE_O_PE32 || pe->pe_obj == PE_O_PE32P) {
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if ((off = libpe_write_msdos_stub(pe, off)) < 0)
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return (-1);
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if ((off = libpe_write_pe_header(pe, off)) < 0)
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return (-1);
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}
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if (libpe_resync_sections(pe, off) < 0)
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return (-1);
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if ((off = libpe_write_coff_header(pe, off)) < 0)
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return (-1);
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if ((off = libpe_write_section_headers(pe, off)) < 0)
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return (-1);
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if ((off = libpe_write_sections(pe, off)) < 0)
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return (-1);
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if (ftruncate(pe->pe_fd, off) < 0) {
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errno = EIO;
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return (-1);
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}
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return (off);
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}
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