1 /* Update required symbol version information. 2 Copyright (C) 2001, 2002, 201r Red Hat, Inc. 3 This file is part of elfutils. 4 Written by Ulrich Drepper <drepper (at) redhat.com>, 2001. 5 6 This file is free software; you can redistribute it and/or modify 7 it under the terms of either 8 9 * the GNU Lesser General Public License as published by the Free 10 Software Foundation; either version 3 of the License, or (at 11 your option) any later version 12 13 or 14 15 * the GNU General Public License as published by the Free 16 Software Foundation; either version 2 of the License, or (at 17 your option) any later version 18 19 or both in parallel, as here. 20 21 elfutils is distributed in the hope that it will be useful, but 22 WITHOUT ANY WARRANTY; without even the implied warranty of 23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 24 General Public License for more details. 25 26 You should have received copies of the GNU General Public License and 27 the GNU Lesser General Public License along with this program. If 28 not, see <http://www.gnu.org/licenses/>. */ 29 30 #ifdef HAVE_CONFIG_H 31 # include <config.h> 32 #endif 33 34 #include <assert.h> 35 #include <gelf.h> 36 #include <string.h> 37 38 #include "libelfP.h" 39 40 41 int 42 gelf_update_verneed (Elf_Data *data, int offset, GElf_Verneed *src) 43 { 44 Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data; 45 46 if (data == NULL) 47 return 0; 48 49 /* The types for 32 and 64 bit are the same. Lucky us. */ 50 assert (sizeof (GElf_Verneed) == sizeof (Elf32_Verneed)); 51 assert (sizeof (GElf_Verneed) == sizeof (Elf64_Verneed)); 52 53 /* Check whether we have to resize the data buffer. */ 54 if (unlikely (offset < 0) 55 || unlikely ((offset + sizeof (GElf_Verneed)) > data_scn->d.d_size)) 56 { 57 __libelf_seterrno (ELF_E_INVALID_INDEX); 58 return 0; 59 } 60 61 if (unlikely (data_scn->d.d_type != ELF_T_VNEED)) 62 { 63 /* The type of the data better should match. */ 64 __libelf_seterrno (ELF_E_DATA_MISMATCH); 65 return 0; 66 } 67 68 rwlock_wrlock (data_scn->s->elf->lock); 69 70 memcpy ((char *) data_scn->d.d_buf + offset, src, sizeof (GElf_Verneed)); 71 72 /* Mark the section as modified. */ 73 data_scn->s->flags |= ELF_F_DIRTY; 74 75 rwlock_unlock (data_scn->s->elf->lock); 76 77 return 1; 78 } 79
