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78 lines
2.2 KiB
78 lines
2.2 KiB
/* Update additional required symbol version information. |
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Copyright (C) 2001, 2002, 2015 Red Hat, Inc. |
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This file is part of elfutils. |
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Written by Ulrich Drepper <drepper@redhat.com>, 2001. |
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This file is free software; you can redistribute it and/or modify |
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it under the terms of either |
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* the GNU Lesser General Public License as published by the Free |
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Software Foundation; either version 3 of the License, or (at |
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your option) any later version |
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or |
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* the GNU General Public License as published by the Free |
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Software Foundation; either version 2 of the License, or (at |
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your option) any later version |
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or both in parallel, as here. |
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elfutils is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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You should have received copies of the GNU General Public License and |
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the GNU Lesser General Public License along with this program. If |
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not, see <http://www.gnu.org/licenses/>. */ |
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#ifdef HAVE_CONFIG_H |
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# include <config.h> |
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#endif |
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#include <assert.h> |
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#include <gelf.h> |
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#include <string.h> |
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#include "libelfP.h" |
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int |
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gelf_update_vernaux (Elf_Data *data, int offset, GElf_Vernaux *src) |
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{ |
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Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data; |
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if (data == NULL) |
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return 0; |
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/* The types for 32 and 64 bit are the same. Lucky us. */ |
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assert (sizeof (GElf_Vernaux) == sizeof (Elf32_Vernaux)); |
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assert (sizeof (GElf_Vernaux) == sizeof (Elf64_Vernaux)); |
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/* Check whether we have to resize the data buffer. */ |
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if (unlikely (offset < 0) |
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|| unlikely ((offset + sizeof (GElf_Vernaux)) > data_scn->d.d_size)) |
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{ |
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__libelf_seterrno (ELF_E_INVALID_INDEX); |
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return 0; |
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} |
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if (unlikely (data_scn->d.d_type != ELF_T_VNEED)) |
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{ |
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/* The type of the data better should match. */ |
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__libelf_seterrno (ELF_E_DATA_MISMATCH); |
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return 0; |
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} |
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rwlock_wrlock (data_scn->s->elf->lock); |
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memcpy ((char *) data_scn->d.d_buf + offset, src, sizeof (GElf_Vernaux)); |
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/* Mark the section as modified. */ |
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data_scn->s->flags |= ELF_F_DIRTY; |
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rwlock_unlock (data_scn->s->elf->lock); |
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return 1; |
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}
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