Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/tests/update3.c b/tests/update3.c
new file mode 100644
index 0000000..7a4224d
--- /dev/null
+++ b/tests/update3.c
@@ -0,0 +1,205 @@
+/* Test program for elf_update function.
+ Copyright (C) 2000, 2002, 2005, 2016 Red Hat, Inc.
+ This file is part of elfutils.
+ Written by Ulrich Drepper <drepper@redhat.com>, 2000.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ elfutils is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <libelf.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include ELFUTILS_HEADER(dwelf)
+
+
+int
+main (int argc, char *argv[] __attribute__ ((unused)))
+{
+ const char *fname = "xxx_update3";
+ int fd;
+ Elf *elf;
+ Elf32_Ehdr *ehdr;
+ Elf32_Phdr *phdr;
+ Elf_Scn *scn;
+ Elf32_Shdr *shdr;
+ Elf_Data *data;
+ Dwelf_Strtab *shst;
+ Dwelf_Strent *shstrtabse;
+ int i;
+
+ fd = open (fname, O_RDWR | O_CREAT | O_TRUNC, 0666);
+ if (fd == -1)
+ {
+ printf ("cannot open `%s': %s\n", fname, strerror (errno));
+ exit (1);
+ }
+
+ elf_version (EV_CURRENT);
+
+ elf_fill (0x42);
+
+ elf = elf_begin (fd, ELF_C_WRITE, NULL);
+ if (elf == NULL)
+ {
+ printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ /* Create an ELF header. */
+ ehdr = elf32_newehdr (elf);
+ if (ehdr == NULL)
+ {
+ printf ("cannot create ELF header: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ /* Print the ELF header values. */
+ if (argc > 1)
+ {
+ for (i = 0; i < EI_NIDENT; ++i)
+ printf (" %02x", ehdr->e_ident[i]);
+ printf ("\
+\ntype = %hu\nmachine = %hu\nversion = %u\nentry = %u\nphoff = %u\n"
+ "shoff = %u\nflags = %u\nehsize = %hu\nphentsize = %hu\n"
+ "phnum = %hu\nshentsize = %hu\nshnum = %hu\nshstrndx = %hu\n",
+ ehdr->e_type, ehdr->e_machine, ehdr->e_version, ehdr->e_entry,
+ ehdr->e_phoff, ehdr->e_shoff, ehdr->e_flags, ehdr->e_ehsize,
+ ehdr->e_phentsize, ehdr->e_phnum, ehdr->e_shentsize,
+ ehdr->e_shnum, ehdr->e_shstrndx);
+ }
+
+ ehdr->e_ident[0] = 42;
+ ehdr->e_ident[4] = 1;
+ ehdr->e_ident[5] = 1;
+ ehdr->e_ident[6] = 2;
+ ehdr->e_type = ET_EXEC;
+ ehdr->e_version = 1;
+ ehdr->e_ehsize = 1;
+ elf_flagehdr (elf, ELF_C_SET, ELF_F_DIRTY);
+
+ /* Create the program header. */
+ phdr = elf32_newphdr (elf, 1);
+ if (phdr == NULL)
+ {
+ printf ("cannot create program header: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ phdr[0].p_type = PT_PHDR;
+ elf_flagphdr (elf, ELF_C_SET, ELF_F_DIRTY);
+
+ shst = dwelf_strtab_init (true);
+
+ scn = elf_newscn (elf);
+ if (scn == NULL)
+ {
+ printf ("cannot create SHSTRTAB section: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+ shdr = elf32_getshdr (scn);
+ if (shdr == NULL)
+ {
+ printf ("cannot get header for SHSTRTAB section: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ shstrtabse = dwelf_strtab_add (shst, ".shstrtab");
+
+ shdr->sh_type = SHT_STRTAB;
+ shdr->sh_flags = 0;
+ shdr->sh_addr = 0;
+ shdr->sh_link = SHN_UNDEF;
+ shdr->sh_info = SHN_UNDEF;
+ shdr->sh_addralign = 1;
+ shdr->sh_entsize = 0;
+
+ /* We have to store the section index in the ELF header. */
+ ehdr->e_shstrndx = elf_ndxscn (scn);
+
+ data = elf_newdata (scn);
+ if (data == NULL)
+ {
+ printf ("cannot create data SHSTRTAB section: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ /* No more sections, finalize the section header string table. */
+ dwelf_strtab_finalize (shst, data);
+
+ shdr->sh_name = dwelf_strent_off (shstrtabse);
+
+ /* Let the library compute the internal structure information. */
+ if (elf_update (elf, ELF_C_NULL) < 0)
+ {
+ printf ("failure in elf_update(NULL): %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ ehdr = elf32_getehdr (elf);
+
+ phdr[0].p_offset = ehdr->e_phoff;
+ phdr[0].p_offset = ehdr->e_phoff;
+ phdr[0].p_vaddr = ehdr->e_phoff;
+ phdr[0].p_paddr = ehdr->e_phoff;
+ phdr[0].p_flags = PF_R | PF_X;
+ phdr[0].p_filesz = ehdr->e_phnum * elf32_fsize (ELF_T_PHDR, 1, EV_CURRENT);
+ phdr[0].p_memsz = ehdr->e_phnum * elf32_fsize (ELF_T_PHDR, 1, EV_CURRENT);
+ phdr[0].p_align = sizeof (Elf32_Word);
+
+ /* Write out the file. */
+ if (elf_update (elf, ELF_C_WRITE) < 0)
+ {
+ printf ("failure in elf_update(WRITE): %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ /* We don't need the string table anymore. */
+ dwelf_strtab_free (shst);
+
+ /* And the data allocated in the .shstrtab section. */
+ free (data->d_buf);
+
+ /* Print the ELF header values. */
+ if (argc > 1)
+ {
+ for (i = 0; i < EI_NIDENT; ++i)
+ printf (" %02x", ehdr->e_ident[i]);
+ printf ("\
+\ntype = %hu\nmachine = %hu\nversion = %u\nentry = %u\nphoff = %u\n"
+ "shoff = %u\nflags = %u\nehsize = %hu\nphentsize = %hu\n"
+ "phnum = %hu\nshentsize = %hu\nshnum = %hu\nshstrndx = %hu\n",
+ ehdr->e_type, ehdr->e_machine, ehdr->e_version, ehdr->e_entry,
+ ehdr->e_phoff, ehdr->e_shoff, ehdr->e_flags, ehdr->e_ehsize,
+ ehdr->e_phentsize, ehdr->e_phnum, ehdr->e_shentsize,
+ ehdr->e_shnum, ehdr->e_shstrndx);
+ }
+
+ if (elf_end (elf) != 0)
+ {
+ printf ("failure in elf_end: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ unlink (fname);
+
+ return 0;
+}