1 /* Update symbol version information. 2 Copyright (C) 2001, 2002 Red Hat, Inc. 3 Written by Ulrich Drepper <drepper (at) redhat.com>, 2001. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation, version 2. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software Foundation, 16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 17 18 #ifdef HAVE_CONFIG_H 19 # include <config.h> 20 #endif 21 22 #include <assert.h> 23 #include <gelf.h> 24 #include <stdlib.h> 25 26 #include "libelfP.h" 27 28 29 int 30 gelf_update_versym (data, ndx, src) 31 Elf_Data *data; 32 int ndx; 33 GElf_Versym *src; 34 { 35 Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data; 36 37 if (data == NULL) 38 return 0; 39 40 /* The types for 32 and 64 bit are the same. Lucky us. */ 41 assert (sizeof (GElf_Versym) == sizeof (Elf32_Versym)); 42 assert (sizeof (GElf_Versym) == sizeof (Elf64_Versym)); 43 44 /* Check whether we have to resize the data buffer. */ 45 if (unlikely (ndx < 0) 46 || unlikely ((ndx + 1) * sizeof (GElf_Versym) > data_scn->d.d_size)) 47 { 48 __libelf_seterrno (ELF_E_INVALID_INDEX); 49 return 0; 50 } 51 52 if (unlikely (data_scn->d.d_type != ELF_T_HALF)) 53 { 54 /* The type of the data better should match. */ 55 __libelf_seterrno (ELF_E_DATA_MISMATCH); 56 return 0; 57 } 58 59 rwlock_wrlock (data_scn->s->elf->lock); 60 61 ((GElf_Versym *) data_scn->d.d_buf)[ndx] = *src; 62 63 /* Mark the section as modified. */ 64 data_scn->s->flags |= ELF_F_DIRTY; 65 66 rwlock_unlock (data_scn->s->elf->lock); 67 68 return 1; 69 } 70
