1 files changed, 117 insertions, 0 deletions
diff --git a/libelf/gelf_getphdr.c b/libelf/gelf_getphdr.c
new file mode 100644
index 00000000..fd033e56
--- /dev/null
+++ b/libelf/gelf_getphdr.c
@@ -0,0 +1,117 @@
+/* Return program header table entry.
+   Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
+   Written by Ulrich Drepper <drepper@redhat.com>, 1998.
+
+   This program 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, version 2.
+
+   This program 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, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <gelf.h>
+#include <string.h>
+
+#include "libelfP.h"
+
+
+GElf_Phdr *
+gelf_getphdr (elf, ndx, dst)
+     Elf *elf;
+     int ndx;
+     GElf_Phdr *dst;
+{
+  GElf_Phdr *result = NULL;
+
+  if (elf == NULL)
+    return NULL;
+
+  if (unlikely (elf->kind != ELF_K_ELF))
+    {
+      __libelf_seterrno (ELF_E_INVALID_HANDLE);
+      return NULL;
+    }
+
+  if (dst == NULL)
+    {
+      __libelf_seterrno (ELF_E_INVALID_OPERAND);
+      return NULL;
+    }
+
+  rwlock_rdlock (elf->lock);
+
+  if (elf->class == ELFCLASS32)
+    {
+      /* Copy the elements one-by-one.  */
+      Elf32_Phdr *phdr = elf->state.elf32.phdr;
+
+      if (phdr == NULL)
+	{
+	  phdr = INTUSE(elf32_getphdr) (elf);
+	  if (phdr == NULL)
+	    /* The error number is already set.  */
+	    goto out;
+	}
+
+      /* Test whether the index is ok.  */
+      if (ndx >= elf->state.elf32.ehdr->e_phnum)
+	{
+	  __libelf_seterrno (ELF_E_INVALID_INDEX);
+	  goto out;
+	}
+
+      /* We know the result now.  */
+      result = dst;
+
+      /* Now correct the pointer to point to the correct element.  */
+      phdr += ndx;
+
+#define COPY(Name) result->Name = phdr->Name
+      COPY (p_type);
+      COPY (p_offset);
+      COPY (p_vaddr);
+      COPY (p_paddr);
+      COPY (p_filesz);
+      COPY (p_memsz);
+      COPY (p_flags);
+      COPY (p_align);
+    }
+  else
+    {
+      /* Copy the elements one-by-one.  */
+      Elf64_Phdr *phdr = elf->state.elf64.phdr;
+
+      if (phdr == NULL)
+	{
+	  phdr = INTUSE(elf64_getphdr) (elf);
+	  if (phdr == NULL)
+	    /* The error number is already set.  */
+	    goto out;
+	}
+
+      /* Test whether the index is ok.  */
+      if (ndx >= elf->state.elf64.ehdr->e_phnum)
+	{
+	  __libelf_seterrno (ELF_E_INVALID_INDEX);
+	  goto out;
+	}
+
+      /* We only have to copy the data.  */
+      result = memcpy (dst, phdr + ndx, sizeof (GElf_Phdr));
+    }
+
+ out:
+  rwlock_unlock (elf->lock);
+
+  return result;
+}