Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/libelf/gelf_getshdr.c b/libelf/gelf_getshdr.c
new file mode 100644
index 0000000..3858c8e
--- /dev/null
+++ b/libelf/gelf_getshdr.c
@@ -0,0 +1,103 @@
+/* Return section header.
+ Copyright (C) 1998, 1999, 2000, 2002, 2015 Red Hat, Inc.
+ This file is part of elfutils.
+ Written by Ulrich Drepper <drepper@redhat.com>, 1998.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ 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 copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <gelf.h>
+#include <string.h>
+
+#include "libelfP.h"
+
+
+GElf_Shdr *
+gelf_getshdr (Elf_Scn *scn, GElf_Shdr *dst)
+{
+ GElf_Shdr *result = NULL;
+
+ if (scn == NULL)
+ return NULL;
+
+ if (dst == NULL)
+ {
+ __libelf_seterrno (ELF_E_INVALID_OPERAND);
+ return NULL;
+ }
+
+ rwlock_rdlock (scn->elf->lock);
+
+ if (scn->elf->class == ELFCLASS32)
+ {
+ /* Copy the elements one-by-one. */
+ Elf32_Shdr *shdr
+ = scn->shdr.e32 ?: __elf32_getshdr_rdlock (scn);
+
+ if (shdr == NULL)
+ {
+ __libelf_seterrno (ELF_E_INVALID_OPERAND);
+ goto out;
+ }
+
+#define COPY(name) \
+ dst->name = shdr->name
+ COPY (sh_name);
+ COPY (sh_type);
+ COPY (sh_flags);
+ COPY (sh_addr);
+ COPY (sh_offset);
+ COPY (sh_size);
+ COPY (sh_link);
+ COPY (sh_info);
+ COPY (sh_addralign);
+ COPY (sh_entsize);
+
+ result = dst;
+ }
+ else
+ {
+ Elf64_Shdr *shdr
+ = scn->shdr.e64 ?: __elf64_getshdr_rdlock (scn);
+
+ if (shdr == NULL)
+ {
+ __libelf_seterrno (ELF_E_INVALID_OPERAND);
+ goto out;
+ }
+
+ /* We only have to copy the data. */
+ result = memcpy (dst, shdr, sizeof (GElf_Shdr));
+ }
+
+ out:
+ rwlock_unlock (scn->elf->lock);
+
+ return result;
+}
+INTDEF(gelf_getshdr)