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/*-
* Copyright (c) 2016 Kai Wang
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <assert.h>
#include <errno.h>
#include <unistd.h>
#include "_libpe.h"
ELFTC_VCSID("$Id: pe_update.c 3312 2016-01-10 09:23:51Z kaiwang27 $");
off_t
pe_update(PE *pe)
{
off_t off;
if (pe == NULL) {
errno = EINVAL;
return (-1);
}
if (pe->pe_cmd == PE_C_READ || pe->pe_flags & LIBPE_F_FD_DONE) {
errno = EACCES;
return (-1);
}
if (pe->pe_cmd == PE_C_RDWR || (pe->pe_cmd == PE_C_WRITE &&
(pe->pe_flags & LIBPE_F_SPECIAL_FILE) == 0)) {
if (lseek(pe->pe_fd, 0, SEEK_SET) < 0) {
errno = EIO;
return (-1);
}
}
off = 0;
if (pe->pe_obj == PE_O_PE32 || pe->pe_obj == PE_O_PE32P) {
if ((off = libpe_write_msdos_stub(pe, off)) < 0)
return (-1);
if ((off = libpe_write_pe_header(pe, off)) < 0)
return (-1);
}
if (libpe_resync_sections(pe, off) < 0)
return (-1);
if ((off = libpe_write_coff_header(pe, off)) < 0)
return (-1);
if ((off = libpe_write_section_headers(pe, off)) < 0)
return (-1);
if ((off = libpe_write_sections(pe, off)) < 0)
return (-1);
if (ftruncate(pe->pe_fd, off) < 0) {
errno = EIO;
return (-1);
}
return (off);
}
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