diff options
Diffstat (limited to 'libelf/elf_getident.c')
-rw-r--r-- | libelf/elf_getident.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libelf/elf_getident.c b/libelf/elf_getident.c new file mode 100644 index 00000000..b673b5c6 --- /dev/null +++ b/libelf/elf_getident.c @@ -0,0 +1,51 @@ +/* Retrieve file identification data. + Copyright (C) 1998, 1999, 2000, 2002, 2004 Red Hat, Inc. + Written by Ulrich Drepper <drepper@redhat.com>, 1998. + + 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 <stddef.h> + +#include "libelfP.h" + + +char * +elf_getident (elf, ptr) + Elf *elf; + size_t *ptr; +{ + /* In case this is no ELF file, the handle is invalid and we return + NULL. */ + if (elf == NULL || elf->kind != ELF_K_ELF) + { + if (ptr != NULL) + *ptr = 0; + return NULL; + } + + /* We already read the ELF header. Return a pointer to it and store + the length in *PTR. */ + if (ptr != NULL) + *ptr = EI_NIDENT; + + return (char *) (elf->class == ELFCLASS32 + || (offsetof (struct Elf, state.elf32.ehdr) + == offsetof (struct Elf, state.elf64.ehdr)) + ? elf->state.elf32.ehdr->e_ident + : elf->state.elf64.ehdr->e_ident); +} |