/* $NetBSD: gelf_phdr.c,v 1.3 2009/12/29 17:05:58 thorpej Exp $ */ /*- * Copyright (c) 2006 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 /* __FBSDID("$FreeBSD: src/lib/libelf/gelf_phdr.c,v 1.1.10.1.2.1 2009/10/25 01:10:29 kensmith Exp $"); */ #include #include #include #include "_libelf.h" Elf32_Phdr * elf32_getphdr(Elf *e) { return (_libelf_getphdr(e, ELFCLASS32)); } Elf64_Phdr * elf64_getphdr(Elf *e) { return (_libelf_getphdr(e, ELFCLASS64)); } GElf_Phdr * gelf_getphdr(Elf *e, int index, GElf_Phdr *d) { int ec; Elf32_Ehdr *eh32; Elf64_Ehdr *eh64; Elf32_Phdr *ep32; Elf64_Phdr *ep64; if (d == NULL || e == NULL || ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) || (e->e_kind != ELF_K_ELF) || index < 0) { LIBELF_SET_ERROR(ARGUMENT, 0); return (NULL); } if (ec == ELFCLASS32) { if ((eh32 = _libelf_ehdr(e, ELFCLASS32, 0)) == NULL || ((ep32 = _libelf_getphdr(e, ELFCLASS32)) == NULL)) return (NULL); if (index >= eh32->e_phnum) { LIBELF_SET_ERROR(ARGUMENT, 0); return (NULL); } ep32 += index; d->p_type = ep32->p_type; d->p_offset = ep32->p_offset; d->p_vaddr = (Elf64_Addr) ep32->p_vaddr; d->p_paddr = (Elf64_Addr) ep32->p_paddr; d->p_filesz = (Elf64_Xword) ep32->p_filesz; d->p_memsz = (Elf64_Xword) ep32->p_memsz; d->p_flags = ep32->p_flags; d->p_align = (Elf64_Xword) ep32->p_align; } else { if ((eh64 = _libelf_ehdr(e, ELFCLASS64, 0)) == NULL || (ep64 = _libelf_getphdr(e, ELFCLASS64)) == NULL) return (NULL); if (index >= eh64->e_phnum) { LIBELF_SET_ERROR(ARGUMENT, 0); return (NULL); } ep64 += index; *d = *ep64; } return (d); } Elf32_Phdr * elf32_newphdr(Elf *e, size_t count) { return (_libelf_newphdr(e, ELFCLASS32, count)); } Elf64_Phdr * elf64_newphdr(Elf *e, size_t count) { return (_libelf_newphdr(e, ELFCLASS64, count)); } void * gelf_newphdr(Elf *e, size_t count) { if (e == NULL) { LIBELF_SET_ERROR(ARGUMENT, 0); return (NULL); } return (_libelf_newphdr(e, e->e_class, count)); } int gelf_update_phdr(Elf *e, int ndx, GElf_Phdr *s) { int ec, phnum; void *ehdr; Elf32_Phdr *ph32; Elf64_Phdr *ph64; if (s == NULL || e == NULL || e->e_kind != ELF_K_ELF || ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } if (e->e_cmd == ELF_C_READ) { LIBELF_SET_ERROR(MODE, 0); return (0); } if ((ehdr = _libelf_ehdr(e, ec, 0)) == NULL) return (0); if (ec == ELFCLASS32) phnum = ((Elf32_Ehdr *) ehdr)->e_phnum; else phnum = ((Elf64_Ehdr *) ehdr)->e_phnum; if (ndx < 0 || ndx > phnum) { LIBELF_SET_ERROR(ARGUMENT, 0); return (0); } if (ec == ELFCLASS64) { ph64 = e->e_u.e_elf.e_phdr.e_phdr64 + ndx; *ph64 = *s; return (1); } ph32 = e->e_u.e_elf.e_phdr.e_phdr32 + ndx; ph32->p_type = s->p_type; ph32->p_flags = s->p_flags; LIBELF_COPY_U32(ph32, s, p_offset); LIBELF_COPY_U32(ph32, s, p_vaddr); LIBELF_COPY_U32(ph32, s, p_paddr); LIBELF_COPY_U32(ph32, s, p_filesz); LIBELF_COPY_U32(ph32, s, p_memsz); LIBELF_COPY_U32(ph32, s, p_align); (void) elf_flagphdr(e, ELF_C_SET, ELF_F_DIRTY); return (1); }