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-rw-r--r--src/rtld/dl-object.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/rtld/dl-object.c b/src/rtld/dl-object.c
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+/* 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;
+}