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-rw-r--r--elf/dl-object.c229
1 files changed, 0 insertions, 229 deletions
diff --git a/elf/dl-object.c b/elf/dl-object.c
deleted file mode 100644
index 4c43235148..0000000000
--- a/elf/dl-object.c
+++ /dev/null
@@ -1,229 +0,0 @@
-/* Storage management for the chain of loaded shared objects.
- Copyright (C) 1995-2017 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 <errno.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <ldsodefs.h>
-
-#include <assert.h>
-
-
-/* Add the new link_map NEW to the end of the namespace list. */
-void
-internal_function
-_dl_add_to_namespace_list (struct link_map *new, Lmid_t nsid)
-{
- /* We modify the list of loaded objects. */
- __rtld_lock_lock_recursive (GL(dl_load_write_lock));
-
- if (GL(dl_ns)[nsid]._ns_loaded != NULL)
- {
- struct link_map *l = GL(dl_ns)[nsid]._ns_loaded;
- while (l->l_next != NULL)
- l = l->l_next;
- new->l_prev = l;
- /* new->l_next = NULL; Would be necessary but we use calloc. */
- l->l_next = new;
- }
- else
- GL(dl_ns)[nsid]._ns_loaded = new;
- ++GL(dl_ns)[nsid]._ns_nloaded;
- new->l_serial = GL(dl_load_adds);
- ++GL(dl_load_adds);
-
- __rtld_lock_unlock_recursive (GL(dl_load_write_lock));
-}
-
-
-/* Allocate a `struct link_map' for a new object being loaded,
- and enter it into the _dl_loaded list. */
-struct link_map *
-internal_function
-_dl_new_object (char *realname, const char *libname, int type,
- struct link_map *loader, int mode, Lmid_t nsid)
-{
- size_t libname_len = strlen (libname) + 1;
- struct link_map *new;
- struct libname_list *newname;
-#ifdef SHARED
- /* We create the map for the executable before we know whether we have
- auditing libraries and if yes, how many. Assume the worst. */
- unsigned int naudit = GLRO(dl_naudit) ?: ((mode & __RTLD_OPENEXEC)
- ? DL_NNS : 0);
- size_t audit_space = naudit * sizeof (new->l_audit[0]);
-#else
-# define audit_space 0
-#endif
-
- new = (struct link_map *) calloc (sizeof (*new) + audit_space
- + sizeof (struct link_map *)
- + sizeof (*newname) + libname_len, 1);
- if (new == NULL)
- return NULL;
-
- new->l_real = new;
- new->l_symbolic_searchlist.r_list = (struct link_map **) ((char *) (new + 1)
- + audit_space);
-
- new->l_libname = newname
- = (struct libname_list *) (new->l_symbolic_searchlist.r_list + 1);
- newname->name = (char *) memcpy (newname + 1, libname, libname_len);
- /* newname->next = NULL; We use calloc therefore not necessary. */
- newname->dont_free = 1;
-
- /* 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;
- /* If we set the bit now since we know it is never used we avoid
- dirtying the cache line later. */
- if ((GLRO(dl_debug_mask) & DL_DEBUG_UNUSED) == 0)
- new->l_used = 1;
- new->l_loader = loader;
-#if NO_TLS_OFFSET != 0
- new->l_tls_offset = NO_TLS_OFFSET;
-#endif
- new->l_ns = nsid;
-
-#ifdef SHARED
- for (unsigned int cnt = 0; cnt < naudit; ++cnt)
- {
- new->l_audit[cnt].cookie = (uintptr_t) new;
- /* new->l_audit[cnt].bindflags = 0; */
- }
-#endif
-
- /* new->l_global = 0; We use calloc therefore not necessary. */
-
- /* Use the 'l_scope_mem' array by default for the 'l_scope'
- information. If we need more entries we will allocate a large
- array dynamically. */
- new->l_scope = new->l_scope_mem;
- new->l_scope_max = sizeof (new->l_scope_mem) / sizeof (new->l_scope_mem[0]);
-
- /* Counter for the scopes we have to handle. */
- int idx = 0;
-
- if (GL(dl_ns)[nsid]._ns_loaded != NULL)
- /* Add the global scope. */
- new->l_scope[idx++] = &GL(dl_ns)[nsid]._ns_loaded->l_searchlist;
-
- /* If we have no loader the new object acts as it. */
- if (loader == NULL)
- loader = new;
- else
- /* Determine the local scope. */
- while (loader->l_loader != NULL)
- loader = loader->l_loader;
-
- /* Insert the scope if it isn't the global scope we already added. */
- if (idx == 0 || &loader->l_searchlist != new->l_scope[0])
- {
- if ((mode & RTLD_DEEPBIND) != 0 && idx != 0)
- {
- new->l_scope[1] = new->l_scope[0];
- idx = 0;
- }
-
- new->l_scope[idx] = &loader->l_searchlist;
- }
-
- new->l_local_scope[0] = &new->l_searchlist;
-
- /* Don't try to find the origin for the main map which has the name "". */
- if (realname[0] != '\0')
- {
- size_t realname_len = strlen (realname) + 1;
- char *origin;
- char *cp;
-
- if (realname[0] == '/')
- {
- /* It is an absolute path. Use it. But we have to make a
- copy since we strip out the trailing slash. */
- cp = origin = (char *) malloc (realname_len);
- if (origin == NULL)
- {
- origin = (char *) -1;
- goto out;
- }
- }
- else
- {
- size_t len = realname_len;
- char *result = NULL;
-
- /* Get the current directory name. */
- origin = NULL;
- do
- {
- char *new_origin;
-
- len += 128;
- new_origin = (char *) realloc (origin, len);
- if (new_origin == NULL)
- /* We exit the loop. Note that result == NULL. */
- break;
- origin = new_origin;
- }
- while ((result = __getcwd (origin, len - realname_len)) == NULL
- && errno == ERANGE);
-
- if (result == NULL)
- {
- /* We were not able to determine the current directory.
- Note that free(origin) is OK if origin == NULL. */
- free (origin);
- origin = (char *) -1;
- goto out;
- }
-
- /* Find the end of the path and see whether we have to add a
- slash. We could use rawmemchr but this need not be
- fast. */
- cp = (strchr) (origin, '\0');
- if (cp[-1] != '/')
- *cp++ = '/';
- }
-
- /* Add the real file name. */
- cp = __mempcpy (cp, realname, realname_len);
-
- /* Now remove the filename and the slash. Leave the slash if
- the name is something like "/foo". */
- do
- --cp;
- while (*cp != '/');
-
- if (cp == origin)
- /* Keep the only slash which is the first character. */
- ++cp;
- *cp = '\0';
-
- out:
- new->l_origin = origin;
- }
-
- return new;
-}
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