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/vendorelf.c b/tests/vendorelf.c
new file mode 100644
index 0000000..bc13cce
--- /dev/null
+++ b/tests/vendorelf.c
@@ -0,0 +1,197 @@
+/* Test program for adding a program header to a vendor specific ELF file.
+ Copyright (C) 2016 Red Hat, Inc.
+ This file is part of elfutils.
+
+ 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 <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include ELFUTILS_HEADER(elf)
+#include <gelf.h>
+
+void
+check_elf (const char *fname, int class, int use_mmap)
+{
+ printf ("\nfname: %s\n", fname);
+
+ int 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 *elf = elf_begin (fd, use_mmap ? ELF_C_WRITE_MMAP : ELF_C_WRITE, NULL);
+ if (elf == NULL)
+ {
+ printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ // Create an ELF header.
+ if (gelf_newehdr (elf, class) == 0)
+ {
+ printf ("cannot create ELF header: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ GElf_Ehdr ehdr_mem;
+ GElf_Ehdr *ehdr = gelf_getehdr (elf, &ehdr_mem);
+ if (ehdr == NULL)
+ {
+ printf ("cannot get ELF header: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ // Initialize header.
+ ehdr->e_ident[EI_DATA] = class == ELFCLASS64 ? ELFDATA2LSB : ELFDATA2MSB;
+ ehdr->e_ident[EI_OSABI] = ELFOSABI_GNU;
+ ehdr->e_type = ET_LOOS + 1;
+ ehdr->e_machine = EM_X86_64;
+ ehdr->e_version = EV_CURRENT;
+
+ if (gelf_update_ehdr (elf, ehdr) == 0)
+ {
+ printf ("cannot update ELF header: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ // Create a program header.
+ if (gelf_newphdr (elf, 1) == 0)
+ {
+ printf ("cannot create program header: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ GElf_Phdr phdr;
+ if (gelf_getphdr (elf, 0, &phdr) == NULL)
+ {
+ printf ("cannot get program header: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ // Some random values to check later.
+ phdr.p_type = PT_NULL;
+ phdr.p_offset = 0;
+ phdr.p_vaddr = 0;
+ phdr.p_paddr = 1;
+ phdr.p_filesz = 0;
+ phdr.p_memsz = 1024;
+ phdr.p_flags = PF_R;
+ phdr.p_align = 16;
+
+ if (gelf_update_phdr (elf, 0, &phdr) == 0)
+ {
+ printf ("cannot update program header: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ // Write everything to disk.
+ if (elf_update (elf, ELF_C_WRITE) < 0)
+ {
+ printf ("failure in elf_update(WRITE): %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ if (elf_end (elf) != 0)
+ {
+ printf ("failure in elf_end: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ close (fd);
+
+ /* Reread the ELF from disk now. */
+ fd = open (fname, O_RDONLY, 0666);
+ if (fd == -1)
+ {
+ printf ("cannot open `%s' read-only: %s\n", fname, strerror (errno));
+ exit (1);
+ }
+
+ elf = elf_begin (fd, use_mmap ? ELF_C_READ_MMAP : ELF_C_READ, NULL);
+ if (elf == NULL)
+ {
+ printf ("cannot create ELF descriptor read-only: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ // Is our phdr there?
+ size_t phnum;
+ if (elf_getphdrnum (elf, &phnum) != 0)
+ {
+ printf ("cannot get phdr num: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ if (phnum != 1)
+ {
+ printf ("Expected just 1 phdr, got: %zd\n", phnum);
+ exit (1);
+ }
+
+ if (gelf_getphdr (elf, 0, &phdr) == NULL)
+ {
+ printf ("cannot get program header from file: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ if (phdr.p_type != PT_NULL
+ || phdr.p_offset != 0
+ || phdr.p_vaddr != 0
+ || phdr.p_paddr != 1
+ || phdr.p_filesz != 0
+ || phdr.p_memsz != 1024
+ || phdr.p_flags != PF_R
+ || phdr.p_align != 16)
+ {
+ printf ("Unexpected phdr values\n");
+ exit (1);
+ }
+
+ if (elf_end (elf) != 0)
+ {
+ printf ("failure in elf_end: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ close (fd);
+
+ unlink (fname);
+}
+
+int
+main (int argc __attribute__ ((unused)),
+ char *argv[] __attribute__ ((unused)))
+{
+ elf_version (EV_CURRENT);
+
+ check_elf ("vendor.elf.32", ELFCLASS32, 0);
+ check_elf ("vendor.elf.32.mmap", ELFCLASS32, 1);
+ check_elf ("vendor.elf.64", ELFCLASS64, 0);
+ check_elf ("vendor.elf.64.mmap", ELFCLASS64, 1);
+
+ return 0;
+}