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/*-
* Copyright (c) 2015 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 <sys/queue.h>
#include <errno.h>
#include <stdlib.h>
#include "_libpe.h"
ELFTC_VCSID("$Id: pe_init.c 3312 2016-01-10 09:23:51Z kaiwang27 $");
PE *
pe_init(int fd, PE_Cmd c, PE_Object o)
{
PE *pe;
if ((pe = calloc(1, sizeof(*pe))) == NULL) {
errno = ENOMEM;
return (NULL);
}
pe->pe_fd = fd;
pe->pe_cmd = c;
pe->pe_obj = o;
STAILQ_INIT(&pe->pe_scn);
switch (c) {
case PE_C_READ:
case PE_C_RDWR:
if (libpe_open_object(pe) < 0)
goto init_fail;
break;
case PE_C_WRITE:
if (o < PE_O_PE32 || o > PE_O_COFF) {
errno = EINVAL;
goto init_fail;
}
break;
default:
errno = EINVAL;
goto init_fail;
}
return (pe);
init_fail:
pe_finish(pe);
return (NULL);
}
void
pe_finish(PE *pe)
{
if (pe == NULL)
return;
libpe_release_object(pe);
}
PE_Object
pe_object(PE *pe)
{
if (pe == NULL) {
errno = EINVAL;
return (PE_O_UNKNOWN);
}
return (pe->pe_obj);
}
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