diff options
Diffstat (limited to 'src/rtld/dl-object.c')
-rw-r--r-- | src/rtld/dl-object.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/rtld/dl-object.c b/src/rtld/dl-object.c new file mode 100644 index 0000000..19f0265 --- /dev/null +++ b/src/rtld/dl-object.c @@ -0,0 +1,57 @@ +/* glibc-2.22: elf/dl-object.c */ + +/* Storage management for the chain of loaded shared objects. + Copyright (C) 1995-2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <assert.h> +#include <error.h> +#include <errno.h> +#include <string.h> +#include "rtld.h" + +/* Allocate a `struct link_map' for a new object being loaded, + and enter it into the _dl_loaded list. */ +struct link_map * +_dl_new_object (const char *realname, const char *libname, int type) +{ + size_t libname_len = strlen (libname) + 1; + struct link_map *new; + struct libname_list *newname; + + new = (struct link_map *) calloc (sizeof (*new) + + + sizeof (*newname) + libname_len, 1); + + if (new == NULL) + return NULL; + + new->l_libname = newname + = (struct libname_list *) ((char *) (new + 1)); + newname->name = (char *) memcpy (newname + 1, libname, libname_len); + /* newname->next = NULL; We use calloc therefore not necessary. */ + + /* When we create the executable link map, or a VDSO link map, we start + with "" for the l_name. In these cases "" points to ld.so rodata + and won't get dumped during core file generation. Therefore to assist + gdb and to create more self-contained core files we adjust l_name to + point at the newly allocated copy (which will get dumped) instead of + the ld.so rodata copy. */ + new->l_name = *realname ? realname : (char *) newname->name + libname_len - 1; + new->l_type = type; + + return new; +} |