/* $NetBSD: elf_flag.c,v 1.4 2022/05/01 19:41:35 jkoshy Exp $ */ /*- * Copyright (c) 2006,2008-2009,2011 Joseph Koshy * 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 <libelf.h> #include "_libelf.h" __RCSID("$NetBSD: elf_flag.c,v 1.4 2022/05/01 19:41:35 jkoshy Exp $"); ELFTC_VCSID("Id: elf_flag.c 3174 2015-03-27 17:13:41Z emaste"); unsigned int elf_flagarhdr(Elf_Arhdr *a, Elf_Cmd c, unsigned int flags) { unsigned int r; if (a == NULL) return (0); if ((c != ELF_C_SET && c != ELF_C_CLR) || (flags & ~ELF_F_DIRTY) != 0) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } if (c == ELF_C_SET) r = a->ar_flags |= flags; else r = a->ar_flags &= ~flags; return (r & LIBELF_F_API_MASK); } unsigned int elf_flagdata(Elf_Data *d, Elf_Cmd c, unsigned int flags) { unsigned int r; struct _Libelf_Data *ld; if (d == NULL) return (0); if ((c != ELF_C_SET && c != ELF_C_CLR) || (flags & ~ELF_F_DIRTY) != 0) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } ld = (struct _Libelf_Data *) d; if (c == ELF_C_SET) r = ld->d_flags |= flags; else r = ld->d_flags &= ~flags; return (r & LIBELF_F_API_MASK); } unsigned int elf_flagehdr(Elf *e, Elf_Cmd c, unsigned int flags) { int ec; void *ehdr; if (e == NULL) return (0); if ((c != ELF_C_SET && c != ELF_C_CLR) || (e->e_kind != ELF_K_ELF) || (flags & ~ELF_F_DIRTY) != 0 || ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } if (ec == ELFCLASS32) ehdr = e->e_u.e_elf.e_ehdr.e_ehdr32; else ehdr = e->e_u.e_elf.e_ehdr.e_ehdr64; if (ehdr == NULL) { LIBELF_SET_ERROR(SEQUENCE, 0); return (0); } return (elf_flagelf(e, c, flags)); } unsigned int elf_flagelf(Elf *e, Elf_Cmd c, unsigned int flags) { unsigned int r; if (e == NULL) return (0); if ((c != ELF_C_SET && c != ELF_C_CLR) || (e->e_kind != ELF_K_ELF) || (flags & ~(ELF_F_ARCHIVE | ELF_F_ARCHIVE_SYSV | ELF_F_DIRTY | ELF_F_LAYOUT)) != 0) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } if ((flags & ELF_F_ARCHIVE_SYSV) && (flags & ELF_F_ARCHIVE) == 0) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } if ((flags & ELF_F_ARCHIVE) && e->e_cmd != ELF_C_WRITE) { LIBELF_SET_ERROR(MODE, 0); return (0); } if (c == ELF_C_SET) r = e->e_flags |= flags; else r = e->e_flags &= ~flags; return (r & LIBELF_F_API_MASK); } unsigned int elf_flagphdr(Elf *e, Elf_Cmd c, unsigned int flags) { int ec; void *phdr; if (e == NULL) return (0); if ((c != ELF_C_SET && c != ELF_C_CLR) || (e->e_kind != ELF_K_ELF) || (flags & ~ELF_F_DIRTY) != 0 || ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } if (ec == ELFCLASS32) phdr = e->e_u.e_elf.e_phdr.e_phdr32; else phdr = e->e_u.e_elf.e_phdr.e_phdr64; if (phdr == NULL) { LIBELF_SET_ERROR(SEQUENCE, 0); return (0); } return (elf_flagelf(e, c, flags)); } unsigned int elf_flagscn(Elf_Scn *s, Elf_Cmd c, unsigned int flags) { unsigned int r; if (s == NULL) return (0); if ((c != ELF_C_SET && c != ELF_C_CLR) || (flags & ~ELF_F_DIRTY) != 0) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } if (c == ELF_C_SET) r = s->s_flags |= flags; else r = s->s_flags &= ~flags; return (r & LIBELF_F_API_MASK); } unsigned int elf_flagshdr(Elf_Scn *s, Elf_Cmd c, unsigned int flags) { return (elf_flagscn(s, c, flags)); }