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Diffstat (limited to 'libelf/gelf_update_vernaux.c')
-rw-r--r--libelf/gelf_update_vernaux.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/libelf/gelf_update_vernaux.c b/libelf/gelf_update_vernaux.c
new file mode 100644
index 00000000..3f506d48
--- /dev/null
+++ b/libelf/gelf_update_vernaux.c
@@ -0,0 +1,69 @@
+/* Update additional required symbol version information.
+ Copyright (C) 2001, 2002 Red Hat, Inc.
+ Written by Ulrich Drepper <drepper@redhat.com>, 2001.
+
+ 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 <assert.h>
+#include <gelf.h>
+#include <string.h>
+
+#include "libelfP.h"
+
+
+int
+gelf_update_vernaux (data, offset, src)
+ Elf_Data *data;
+ int offset;
+ GElf_Vernaux *src;
+{
+ Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data;
+
+ if (data == NULL)
+ return 0;
+
+ /* The types for 32 and 64 bit are the same. Lucky us. */
+ assert (sizeof (GElf_Vernaux) == sizeof (Elf32_Vernaux));
+ assert (sizeof (GElf_Vernaux) == sizeof (Elf64_Vernaux));
+
+ /* Check whether we have to resize the data buffer. */
+ if (unlikely (offset < 0)
+ || unlikely ((offset + sizeof (GElf_Vernaux)) > data_scn->d.d_size))
+ {
+ __libelf_seterrno (ELF_E_INVALID_INDEX);
+ return 0;
+ }
+
+ if (unlikely (data_scn->d.d_type != ELF_T_VNEED))
+ {
+ /* The type of the data better should match. */
+ __libelf_seterrno (ELF_E_DATA_MISMATCH);
+ return 0;
+ }
+
+ rwlock_wrlock (data_scn->s->elf->lock);
+
+ memcpy ((char *) data_scn->d.d_buf + offset, src, sizeof (GElf_Vernaux));
+
+ /* Mark the section as modified. */
+ data_scn->s->flags |= ELF_F_DIRTY;
+
+ rwlock_unlock (data_scn->s->elf->lock);
+
+ return 1;
+}