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165 lines
3.8 KiB
C
165 lines
3.8 KiB
C
/*-
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* Copyright (c) 2006 Joseph Koshy
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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 <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <libelf.h>
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#include "_libelf.h"
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unsigned int
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elf_flagdata(Elf_Data *d, Elf_Cmd c, unsigned int flags)
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{
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Elf *e;
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Elf_Scn *scn;
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unsigned int r;
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if (d == NULL)
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return (0);
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if ((c != ELF_C_SET && c != ELF_C_CLR) || (scn = d->d_scn) == NULL ||
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(e = scn->s_elf) == NULL || e->e_kind != ELF_K_ELF ||
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(flags & ~ELF_F_DIRTY) != 0) {
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LIBELF_SET_ERROR(ARGUMENT, 0);
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return (0);
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}
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if (c == ELF_C_SET)
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r = scn->s_flags |= flags;
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else
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r = scn->s_flags &= ~flags;
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return (r);
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}
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unsigned int
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elf_flagehdr(Elf *e, Elf_Cmd c, unsigned int flags)
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{
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int ec;
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void *ehdr;
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if (e == NULL)
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return (0);
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if ((c != ELF_C_SET && c != ELF_C_CLR) ||
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(e->e_kind != ELF_K_ELF) || (flags & ~ELF_F_DIRTY) != 0 ||
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((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
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LIBELF_SET_ERROR(ARGUMENT, 0);
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return (0);
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}
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if (ec == ELFCLASS32)
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ehdr = e->e_u.e_elf.e_ehdr.e_ehdr32;
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else
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ehdr = e->e_u.e_elf.e_ehdr.e_ehdr64;
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if (ehdr == NULL) {
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LIBELF_SET_ERROR(SEQUENCE, 0);
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return (0);
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}
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return (elf_flagelf(e, c, flags));
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}
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unsigned int
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elf_flagelf(Elf *e, Elf_Cmd c, unsigned int flags)
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{
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int r;
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if (e == NULL)
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return (0);
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if ((c != ELF_C_SET && c != ELF_C_CLR) ||
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(e->e_kind != ELF_K_ELF) ||
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(flags & ~(ELF_F_DIRTY|ELF_F_LAYOUT)) != 0) {
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LIBELF_SET_ERROR(ARGUMENT, 0);
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return (0);
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}
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if (c == ELF_C_SET)
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r = e->e_flags |= flags;
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else
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r = e->e_flags &= ~flags;
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return (r);
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}
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unsigned int
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elf_flagphdr(Elf *e, Elf_Cmd c, unsigned int flags)
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{
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int ec;
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void *phdr;
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if (e == NULL)
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return (0);
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if ((c != ELF_C_SET && c != ELF_C_CLR) ||
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(e->e_kind != ELF_K_ELF) || (flags & ~ELF_F_DIRTY) != 0 ||
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((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
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LIBELF_SET_ERROR(ARGUMENT, 0);
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return (0);
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}
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if (ec == ELFCLASS32)
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phdr = e->e_u.e_elf.e_phdr.e_phdr32;
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else
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phdr = e->e_u.e_elf.e_phdr.e_phdr64;
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if (phdr == NULL) {
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LIBELF_SET_ERROR(SEQUENCE, 0);
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return (0);
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}
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return (elf_flagelf(e, c, flags));
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}
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unsigned int
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elf_flagscn(Elf_Scn *s, Elf_Cmd c, unsigned int flags)
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{
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int r;
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if (s == NULL)
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return (0);
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if ((c != ELF_C_SET && c != ELF_C_CLR) ||
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(flags & ~ELF_F_DIRTY) != 0) {
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LIBELF_SET_ERROR(ARGUMENT, 0);
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return (0);
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}
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if (c == ELF_C_SET)
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r = s->s_flags |= flags;
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else
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r = s->s_flags &= ~flags;
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return (r);
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}
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unsigned int
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elf_flagshdr(Elf_Scn *s, Elf_Cmd c, unsigned int flags)
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{
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return (elf_flagscn(s, c, flags));
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}
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