diff options
Diffstat (limited to 'libelf/gelf_update_verdaux.c')
-rw-r--r-- | libelf/gelf_update_verdaux.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/libelf/gelf_update_verdaux.c b/libelf/gelf_update_verdaux.c new file mode 100644 index 00000000..e21428e0 --- /dev/null +++ b/libelf/gelf_update_verdaux.c @@ -0,0 +1,69 @@ +/* Update additional symbol version definition 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_verdaux (data, offset, src) + Elf_Data *data; + int offset; + GElf_Verdaux *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_Verdaux) == sizeof (Elf32_Verdaux)); + assert (sizeof (GElf_Verdaux) == sizeof (Elf64_Verdaux)); + + /* Check whether we have to resize the data buffer. */ + if (unlikely (offset < 0) + || unlikely ((offset + sizeof (GElf_Verdaux)) > data_scn->d.d_size)) + { + __libelf_seterrno (ELF_E_INVALID_INDEX); + return 0; + } + + if (unlikely (data_scn->d.d_type != ELF_T_VDEF)) + { + /* 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_Verdaux)); + + /* Mark the section as modified. */ + data_scn->s->flags |= ELF_F_DIRTY; + + rwlock_unlock (data_scn->s->elf->lock); + + return 1; +} |