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