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148 |
jeremybenn |
/* Load the dependencies of a mapped object.
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Copyright (C) 1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <assert.h>
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#include <dlfcn.h>
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#include <errno.h>
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#include <libintl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <ldsodefs.h>
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#include <dl-dst.h>
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/* Whether an shared object references one or more auxiliary objects
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is signaled by the AUXTAG entry in l_info. */
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#define AUXTAG (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM \
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+ DT_EXTRATAGIDX (DT_AUXILIARY))
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/* Whether an shared object references one or more auxiliary objects
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is signaled by the AUXTAG entry in l_info. */
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#define FILTERTAG (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM \
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+ DT_EXTRATAGIDX (DT_FILTER))
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/* This is zero at program start to signal that the global scope map is
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allocated by rtld. Later it keeps the size of the map. It might be
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reset if in _dl_close if the last global object is removed. */
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size_t _dl_global_scope_alloc;
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extern size_t _dl_platformlen;
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/* When loading auxiliary objects we must ignore errors. It's ok if
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an object is missing. */
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struct openaux_args
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{
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/* The arguments to openaux. */
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struct link_map *map;
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int trace_mode;
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const char *strtab;
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const char *name;
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/* The return value of openaux. */
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struct link_map *aux;
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};
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static void
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openaux (void *a)
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{
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struct openaux_args *args = (struct openaux_args *) a;
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| 67 |
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args->aux = _dl_map_object (args->map, args->name, 0,
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| 68 |
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(args->map->l_type == lt_executable
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? lt_library : args->map->l_type),
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| 70 |
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args->trace_mode, 0);
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}
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/* We use a very special kind of list to track the path
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through the list of loaded shared objects. We have to
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produce a flat list with unique members of all involved objects.
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*/
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struct list
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{
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int done; /* Nonzero if this map was processed. */
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struct link_map *map; /* The data. */
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| 83 |
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struct list *next; /* Elements for normal list. */
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};
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| 86 |
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| 87 |
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/* Macro to expand DST. It is an macro since we use `alloca'. */
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#define expand_dst(l, str, fatal) \
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({ \
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| 90 |
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const char *__str = (str); \
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const char *__result = __str; \
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size_t __cnt = DL_DST_COUNT(__str, 0); \
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\
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| 94 |
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if (__cnt != 0) \
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{ \
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| 96 |
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char *__newp; \
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| 97 |
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\
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| 98 |
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__newp = (char *) alloca (DL_DST_REQUIRED (l, __str, strlen (__str), \
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| 99 |
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__cnt)); \
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\
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__result = DL_DST_SUBSTITUTE (l, __str, __newp, 0); \
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\
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| 103 |
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if (*__result == '\0') \
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| 104 |
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{ \
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/* The replacement for the DST is not known. We can't \
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processed. */ \
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| 107 |
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if (fatal) \
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_dl_signal_error (0, __str, NULL, N_("\
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| 109 |
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empty dynamics string token substitution")); \
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else \
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{ \
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/* This is for DT_AUXILIARY. */ \
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if (__builtin_expect (_dl_debug_mask & DL_DEBUG_LIBS, 0)) \
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_dl_debug_printf ("cannot load auxiliary `%s' because of" \
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"empty dynamic string token " \
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"substitution\n", __str); \
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| 117 |
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continue; \
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| 118 |
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} \
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| 119 |
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} \
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| 120 |
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} \
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\
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| 122 |
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__result; })
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| 124 |
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| 125 |
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void
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| 126 |
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internal_function
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| 127 |
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_dl_map_object_deps (struct link_map *map,
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struct link_map **preloads, unsigned int npreloads,
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int trace_mode)
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{
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struct list known[1 + npreloads + 1];
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| 132 |
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struct list *runp, *tail;
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| 133 |
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unsigned int nlist, i;
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/* Object name. */
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| 135 |
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const char *name;
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| 136 |
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int errno_saved;
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| 137 |
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int errno_reason;
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| 138 |
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const char *errstring;
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| 139 |
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const char *objname;
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| 140 |
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| 141 |
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auto inline void preload (struct link_map *map);
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| 142 |
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| 143 |
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inline void preload (struct link_map *map)
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| 144 |
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{
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| 145 |
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known[nlist].done = 0;
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| 146 |
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known[nlist].map = map;
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| 147 |
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known[nlist].next = &known[nlist + 1];
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| 148 |
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| 149 |
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++nlist;
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| 150 |
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/* We use `l_reserved' as a mark bit to detect objects we have
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| 151 |
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already put in the search list and avoid adding duplicate
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| 152 |
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elements later in the list. */
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| 153 |
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map->l_reserved = 1;
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}
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| 155 |
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| 156 |
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/* No loaded object so far. */
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| 157 |
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nlist = 0;
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| 158 |
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| 159 |
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/* First load MAP itself. */
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| 160 |
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preload (map);
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| 162 |
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/* Add the preloaded items after MAP but before any of its dependencies. */
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| 163 |
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for (i = 0; i < npreloads; ++i)
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preload (preloads[i]);
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| 165 |
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| 166 |
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/* Terminate the lists. */
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| 167 |
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known[nlist - 1].next = NULL;
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| 169 |
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/* Pointer to last unique object. */
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| 170 |
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tail = &known[nlist - 1];
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| 171 |
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| 172 |
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/* Process each element of the search list, loading each of its
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| 173 |
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auxiliary objects and immediate dependencies. Auxiliary objects
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will be added in the list before the object itself and
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| 175 |
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dependencies will be appended to the list as we step through it.
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| 176 |
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This produces a flat, ordered list that represents a
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breadth-first search of the dependency tree.
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| 179 |
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The whole process is complicated by the fact that we better
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| 180 |
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should use alloca for the temporary list elements. But using
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| 181 |
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alloca means we cannot use recursive function calls. */
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| 182 |
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errno_saved = errno;
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| 183 |
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errno_reason = 0;
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| 184 |
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errstring = NULL;
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| 185 |
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errno = 0;
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| 186 |
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name = NULL;
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| 187 |
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for (runp = known; runp; )
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{
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| 189 |
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struct link_map *l = runp->map;
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| 190 |
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struct link_map **needed = NULL;
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| 191 |
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unsigned int nneeded = 0;
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| 192 |
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| 193 |
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/* Unless otherwise stated, this object is handled. */
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| 194 |
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runp->done = 1;
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| 195 |
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| 196 |
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/* Allocate a temporary record to contain the references to the
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| 197 |
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dependencies of this object. */
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| 198 |
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if (l->l_searchlist.r_list == NULL && l->l_initfini == NULL
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| 199 |
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&& l != map && l->l_ldnum > 0)
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| 200 |
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needed = (struct link_map **) alloca (l->l_ldnum
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| 201 |
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* sizeof (struct link_map *));
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| 202 |
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| 203 |
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if (l->l_info[DT_NEEDED] || l->l_info[AUXTAG] || l->l_info[FILTERTAG])
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| 204 |
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{
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| 205 |
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const char *strtab = (const void *) D_PTR (l, l_info[DT_STRTAB]);
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| 206 |
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struct openaux_args args;
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| 207 |
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struct list *orig;
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| 208 |
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const ElfW(Dyn) *d;
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| 209 |
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| 210 |
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args.strtab = strtab;
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| 211 |
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args.map = l;
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| 212 |
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args.trace_mode = trace_mode;
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| 213 |
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orig = runp;
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| 214 |
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| 215 |
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for (d = l->l_ld; d->d_tag != DT_NULL; ++d)
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| 216 |
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if (__builtin_expect (d->d_tag, DT_NEEDED) == DT_NEEDED)
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| 217 |
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{
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| 218 |
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/* Map in the needed object. */
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| 219 |
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struct link_map *dep;
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| 220 |
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int err;
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| 221 |
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| 222 |
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/* Recognize DSTs. */
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| 223 |
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name = expand_dst (l, strtab + d->d_un.d_val, 0);
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| 224 |
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/* Store the tag in the argument structure. */
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| 225 |
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args.name = name;
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| 226 |
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| 227 |
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err = _dl_catch_error (&objname, &errstring, openaux, &args);
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| 228 |
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if (__builtin_expect (errstring != NULL, 0))
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| 229 |
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{
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| 230 |
|
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if (err)
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| 231 |
|
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errno_reason = err;
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| 232 |
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else
|
| 233 |
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errno_reason = -1;
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| 234 |
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goto out;
|
| 235 |
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}
|
| 236 |
|
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else
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| 237 |
|
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dep = args.aux;
|
| 238 |
|
|
|
| 239 |
|
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if (! dep->l_reserved)
|
| 240 |
|
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{
|
| 241 |
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/* Allocate new entry. */
|
| 242 |
|
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struct list *newp;
|
| 243 |
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| 244 |
|
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newp = alloca (sizeof (struct list));
|
| 245 |
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| 246 |
|
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/* Append DEP to the list. */
|
| 247 |
|
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newp->map = dep;
|
| 248 |
|
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newp->done = 0;
|
| 249 |
|
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newp->next = NULL;
|
| 250 |
|
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tail->next = newp;
|
| 251 |
|
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tail = newp;
|
| 252 |
|
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++nlist;
|
| 253 |
|
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/* Set the mark bit that says it's already in the list. */
|
| 254 |
|
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dep->l_reserved = 1;
|
| 255 |
|
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}
|
| 256 |
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|
| 257 |
|
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/* Remember this dependency. */
|
| 258 |
|
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if (needed != NULL)
|
| 259 |
|
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needed[nneeded++] = dep;
|
| 260 |
|
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}
|
| 261 |
|
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else if (d->d_tag == DT_AUXILIARY || d->d_tag == DT_FILTER)
|
| 262 |
|
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{
|
| 263 |
|
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struct list *newp;
|
| 264 |
|
|
|
| 265 |
|
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/* Recognize DSTs. */
|
| 266 |
|
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name = expand_dst (l, strtab + d->d_un.d_val,
|
| 267 |
|
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d->d_tag == DT_AUXILIARY);
|
| 268 |
|
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/* Store the tag in the argument structure. */
|
| 269 |
|
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args.name = name;
|
| 270 |
|
|
|
| 271 |
|
|
if (d->d_tag == DT_AUXILIARY)
|
| 272 |
|
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{
|
| 273 |
|
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int err;
|
| 274 |
|
|
|
| 275 |
|
|
/* Say that we are about to load an auxiliary library. */
|
| 276 |
|
|
if (__builtin_expect (_dl_debug_mask & DL_DEBUG_LIBS, 0))
|
| 277 |
|
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_dl_debug_printf ("load auxiliary object=%s"
|
| 278 |
|
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" requested by file=%s\n", name,
|
| 279 |
|
|
l->l_name[0]
|
| 280 |
|
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? l->l_name : _dl_argv[0]);
|
| 281 |
|
|
|
| 282 |
|
|
/* We must be prepared that the addressed shared
|
| 283 |
|
|
object is not available. */
|
| 284 |
|
|
err = _dl_catch_error (&objname, &errstring, openaux,
|
| 285 |
|
|
&args);
|
| 286 |
|
|
if (__builtin_expect (errstring != NULL, 0))
|
| 287 |
|
|
{
|
| 288 |
|
|
/* We are not interested in the error message. */
|
| 289 |
|
|
assert (errstring != NULL);
|
| 290 |
|
|
if (errstring != _dl_out_of_memory)
|
| 291 |
|
|
free ((char *) errstring);
|
| 292 |
|
|
|
| 293 |
|
|
/* Simply ignore this error and continue the work. */
|
| 294 |
|
|
continue;
|
| 295 |
|
|
}
|
| 296 |
|
|
}
|
| 297 |
|
|
else
|
| 298 |
|
|
{
|
| 299 |
|
|
int err;
|
| 300 |
|
|
|
| 301 |
|
|
/* Say that we are about to load an auxiliary library. */
|
| 302 |
|
|
if (__builtin_expect (_dl_debug_mask & DL_DEBUG_LIBS, 0))
|
| 303 |
|
|
_dl_debug_printf ("load filtered object=%s"
|
| 304 |
|
|
" requested by file=%s\n", name,
|
| 305 |
|
|
l->l_name[0]
|
| 306 |
|
|
? l->l_name : _dl_argv[0]);
|
| 307 |
|
|
|
| 308 |
|
|
/* For filter objects the dependency must be available. */
|
| 309 |
|
|
err = _dl_catch_error (&objname, &errstring, openaux,
|
| 310 |
|
|
&args);
|
| 311 |
|
|
if (__builtin_expect (errstring != NULL, 0))
|
| 312 |
|
|
{
|
| 313 |
|
|
if (err)
|
| 314 |
|
|
errno_reason = err;
|
| 315 |
|
|
else
|
| 316 |
|
|
errno_reason = -1;
|
| 317 |
|
|
goto out;
|
| 318 |
|
|
}
|
| 319 |
|
|
}
|
| 320 |
|
|
|
| 321 |
|
|
/* The auxiliary object is actually available.
|
| 322 |
|
|
Incorporate the map in all the lists. */
|
| 323 |
|
|
|
| 324 |
|
|
/* Allocate new entry. This always has to be done. */
|
| 325 |
|
|
newp = alloca (sizeof (struct list));
|
| 326 |
|
|
|
| 327 |
|
|
/* We want to insert the new map before the current one,
|
| 328 |
|
|
but we have no back links. So we copy the contents of
|
| 329 |
|
|
the current entry over. Note that ORIG and NEWP now
|
| 330 |
|
|
have switched their meanings. */
|
| 331 |
|
|
memcpy (newp, orig, sizeof (*newp));
|
| 332 |
|
|
|
| 333 |
|
|
/* Initialize new entry. */
|
| 334 |
|
|
orig->done = 0;
|
| 335 |
|
|
orig->map = args.aux;
|
| 336 |
|
|
|
| 337 |
|
|
/* Remember this dependency. */
|
| 338 |
|
|
if (needed != NULL)
|
| 339 |
|
|
needed[nneeded++] = args.aux;
|
| 340 |
|
|
|
| 341 |
|
|
/* We must handle two situations here: the map is new,
|
| 342 |
|
|
so we must add it in all three lists. If the map
|
| 343 |
|
|
is already known, we have two further possibilities:
|
| 344 |
|
|
- if the object is before the current map in the
|
| 345 |
|
|
search list, we do nothing. It is already found
|
| 346 |
|
|
early
|
| 347 |
|
|
- if the object is after the current one, we must
|
| 348 |
|
|
move it just before the current map to make sure
|
| 349 |
|
|
the symbols are found early enough
|
| 350 |
|
|
*/
|
| 351 |
|
|
if (args.aux->l_reserved)
|
| 352 |
|
|
{
|
| 353 |
|
|
/* The object is already somewhere in the list.
|
| 354 |
|
|
Locate it first. */
|
| 355 |
|
|
struct list *late;
|
| 356 |
|
|
|
| 357 |
|
|
/* This object is already in the search list we
|
| 358 |
|
|
are building. Don't add a duplicate pointer.
|
| 359 |
|
|
Just added by _dl_map_object. */
|
| 360 |
|
|
for (late = newp; late->next != NULL; late = late->next)
|
| 361 |
|
|
if (late->next->map == args.aux)
|
| 362 |
|
|
break;
|
| 363 |
|
|
|
| 364 |
|
|
if (late->next != NULL)
|
| 365 |
|
|
{
|
| 366 |
|
|
/* The object is somewhere behind the current
|
| 367 |
|
|
position in the search path. We have to
|
| 368 |
|
|
move it to this earlier position. */
|
| 369 |
|
|
orig->next = newp;
|
| 370 |
|
|
|
| 371 |
|
|
/* Now remove the later entry from the list
|
| 372 |
|
|
and adjust the tail pointer. */
|
| 373 |
|
|
if (tail == late->next)
|
| 374 |
|
|
tail = late;
|
| 375 |
|
|
late->next = late->next->next;
|
| 376 |
|
|
|
| 377 |
|
|
/* We must move the object earlier in the chain. */
|
| 378 |
|
|
if (args.aux->l_prev != NULL)
|
| 379 |
|
|
args.aux->l_prev->l_next = args.aux->l_next;
|
| 380 |
|
|
if (args.aux->l_next != NULL)
|
| 381 |
|
|
args.aux->l_next->l_prev = args.aux->l_prev;
|
| 382 |
|
|
|
| 383 |
|
|
args.aux->l_prev = newp->map->l_prev;
|
| 384 |
|
|
newp->map->l_prev = args.aux;
|
| 385 |
|
|
if (args.aux->l_prev != NULL)
|
| 386 |
|
|
args.aux->l_prev->l_next = args.aux;
|
| 387 |
|
|
args.aux->l_next = newp->map;
|
| 388 |
|
|
}
|
| 389 |
|
|
else
|
| 390 |
|
|
{
|
| 391 |
|
|
/* The object must be somewhere earlier in the
|
| 392 |
|
|
list. Undo to the current list element what
|
| 393 |
|
|
we did above. */
|
| 394 |
|
|
memcpy (orig, newp, sizeof (*newp));
|
| 395 |
|
|
continue;
|
| 396 |
|
|
}
|
| 397 |
|
|
}
|
| 398 |
|
|
else
|
| 399 |
|
|
{
|
| 400 |
|
|
/* This is easy. We just add the symbol right here. */
|
| 401 |
|
|
orig->next = newp;
|
| 402 |
|
|
++nlist;
|
| 403 |
|
|
/* Set the mark bit that says it's already in the list. */
|
| 404 |
|
|
args.aux->l_reserved = 1;
|
| 405 |
|
|
|
| 406 |
|
|
/* The only problem is that in the double linked
|
| 407 |
|
|
list of all objects we don't have this new
|
| 408 |
|
|
object at the correct place. Correct this here. */
|
| 409 |
|
|
if (args.aux->l_prev)
|
| 410 |
|
|
args.aux->l_prev->l_next = args.aux->l_next;
|
| 411 |
|
|
if (args.aux->l_next)
|
| 412 |
|
|
args.aux->l_next->l_prev = args.aux->l_prev;
|
| 413 |
|
|
|
| 414 |
|
|
args.aux->l_prev = newp->map->l_prev;
|
| 415 |
|
|
newp->map->l_prev = args.aux;
|
| 416 |
|
|
if (args.aux->l_prev != NULL)
|
| 417 |
|
|
args.aux->l_prev->l_next = args.aux;
|
| 418 |
|
|
args.aux->l_next = newp->map;
|
| 419 |
|
|
}
|
| 420 |
|
|
|
| 421 |
|
|
/* Move the tail pointer if necessary. */
|
| 422 |
|
|
if (orig == tail)
|
| 423 |
|
|
tail = newp;
|
| 424 |
|
|
|
| 425 |
|
|
/* Move on the insert point. */
|
| 426 |
|
|
orig = newp;
|
| 427 |
|
|
}
|
| 428 |
|
|
}
|
| 429 |
|
|
|
| 430 |
|
|
/* Terminate the list of dependencies and store the array address. */
|
| 431 |
|
|
if (needed != NULL)
|
| 432 |
|
|
{
|
| 433 |
|
|
needed[nneeded++] = NULL;
|
| 434 |
|
|
|
| 435 |
|
|
l->l_initfini = (struct link_map **)
|
| 436 |
|
|
malloc ((nneeded + 1) * sizeof needed[0]);
|
| 437 |
|
|
if (l->l_initfini == NULL)
|
| 438 |
|
|
_dl_signal_error (ENOMEM, map->l_name, NULL,
|
| 439 |
|
|
N_("cannot allocate dependency list"));
|
| 440 |
|
|
l->l_initfini[0] = l;
|
| 441 |
|
|
memcpy (&l->l_initfini[1], needed, nneeded * sizeof needed[0]);
|
| 442 |
|
|
}
|
| 443 |
|
|
|
| 444 |
|
|
/* If we have no auxiliary objects just go on to the next map. */
|
| 445 |
|
|
if (runp->done)
|
| 446 |
|
|
do
|
| 447 |
|
|
runp = runp->next;
|
| 448 |
|
|
while (runp != NULL && runp->done);
|
| 449 |
|
|
}
|
| 450 |
|
|
|
| 451 |
|
|
out:
|
| 452 |
|
|
if (errno == 0 && errno_saved != 0)
|
| 453 |
|
|
__set_errno (errno_saved);
|
| 454 |
|
|
|
| 455 |
|
|
if (map->l_initfini != NULL && map->l_type == lt_loaded)
|
| 456 |
|
|
{
|
| 457 |
|
|
/* This object was previously loaded as a dependency and we have
|
| 458 |
|
|
a separate l_initfini list. We don't need it anymore. */
|
| 459 |
|
|
assert (map->l_searchlist.r_list == NULL);
|
| 460 |
|
|
free (map->l_initfini);
|
| 461 |
|
|
}
|
| 462 |
|
|
|
| 463 |
|
|
/* Store the search list we built in the object. It will be used for
|
| 464 |
|
|
searches in the scope of this object. */
|
| 465 |
|
|
map->l_initfini =
|
| 466 |
|
|
(struct link_map **) malloc ((2 * nlist + 1)
|
| 467 |
|
|
* sizeof (struct link_map *));
|
| 468 |
|
|
if (map->l_initfini == NULL)
|
| 469 |
|
|
_dl_signal_error (ENOMEM, map->l_name, NULL,
|
| 470 |
|
|
N_("cannot allocate symbol search list"));
|
| 471 |
|
|
|
| 472 |
|
|
|
| 473 |
|
|
map->l_searchlist.r_list = &map->l_initfini[nlist + 1];
|
| 474 |
|
|
map->l_searchlist.r_nlist = nlist;
|
| 475 |
|
|
|
| 476 |
|
|
for (nlist = 0, runp = known; runp; runp = runp->next)
|
| 477 |
|
|
{
|
| 478 |
|
|
if (__builtin_expect (trace_mode, 0) && runp->map->l_faked)
|
| 479 |
|
|
/* This can happen when we trace the loading. */
|
| 480 |
|
|
--map->l_searchlist.r_nlist;
|
| 481 |
|
|
else
|
| 482 |
|
|
map->l_searchlist.r_list[nlist++] = runp->map;
|
| 483 |
|
|
|
| 484 |
|
|
/* Now clear all the mark bits we set in the objects on the search list
|
| 485 |
|
|
to avoid duplicates, so the next call starts fresh. */
|
| 486 |
|
|
runp->map->l_reserved = 0;
|
| 487 |
|
|
}
|
| 488 |
|
|
|
| 489 |
|
|
/* Maybe we can remove some relocation dependencies now. */
|
| 490 |
|
|
assert (map->l_searchlist.r_list[0] == map);
|
| 491 |
|
|
for (i = 0; i < map->l_reldepsact; ++i)
|
| 492 |
|
|
{
|
| 493 |
|
|
unsigned int j;
|
| 494 |
|
|
|
| 495 |
|
|
for (j = 1; j < nlist; ++j)
|
| 496 |
|
|
if (map->l_searchlist.r_list[j] == map->l_reldeps[i])
|
| 497 |
|
|
{
|
| 498 |
|
|
/* A direct or transitive dependency is also on the list
|
| 499 |
|
|
of relocation dependencies. Remove the latter. */
|
| 500 |
|
|
--map->l_reldeps[i]->l_opencount;
|
| 501 |
|
|
|
| 502 |
|
|
for (j = i + 1; j < map->l_reldepsact; ++j)
|
| 503 |
|
|
map->l_reldeps[j - 1] = map->l_reldeps[j];
|
| 504 |
|
|
|
| 505 |
|
|
--map->l_reldepsact;
|
| 506 |
|
|
|
| 507 |
|
|
/* Account for the '++i' performed by the 'for'. */
|
| 508 |
|
|
--i;
|
| 509 |
|
|
break;
|
| 510 |
|
|
}
|
| 511 |
|
|
}
|
| 512 |
|
|
|
| 513 |
|
|
/* Now determine the order in which the initialization has to happen. */
|
| 514 |
|
|
memcpy (map->l_initfini, map->l_searchlist.r_list,
|
| 515 |
|
|
nlist * sizeof (struct link_map *));
|
| 516 |
|
|
/* We can skip looking for the binary itself which is at the front
|
| 517 |
|
|
of the search list. Look through the list backward so that circular
|
| 518 |
|
|
dependencies are not changing the order. */
|
| 519 |
|
|
for (i = 1; i < nlist; ++i)
|
| 520 |
|
|
{
|
| 521 |
|
|
struct link_map *l = map->l_searchlist.r_list[i];
|
| 522 |
|
|
unsigned int j;
|
| 523 |
|
|
unsigned int k;
|
| 524 |
|
|
|
| 525 |
|
|
/* Find the place in the initfini list where the map is currently
|
| 526 |
|
|
located. */
|
| 527 |
|
|
for (j = 1; map->l_initfini[j] != l; ++j)
|
| 528 |
|
|
;
|
| 529 |
|
|
|
| 530 |
|
|
/* Find all object for which the current one is a dependency and
|
| 531 |
|
|
move the found object (if necessary) in front. */
|
| 532 |
|
|
for (k = j + 1; k < nlist; ++k)
|
| 533 |
|
|
{
|
| 534 |
|
|
struct link_map **runp;
|
| 535 |
|
|
|
| 536 |
|
|
runp = map->l_initfini[k]->l_initfini;
|
| 537 |
|
|
if (runp != NULL)
|
| 538 |
|
|
{
|
| 539 |
|
|
while (*runp != NULL)
|
| 540 |
|
|
if (__builtin_expect (*runp++ == l, 0))
|
| 541 |
|
|
{
|
| 542 |
|
|
struct link_map *here = map->l_initfini[k];
|
| 543 |
|
|
|
| 544 |
|
|
/* Move it now. */
|
| 545 |
|
|
memmove (&map->l_initfini[j] + 1,
|
| 546 |
|
|
&map->l_initfini[j],
|
| 547 |
|
|
(k - j) * sizeof (struct link_map *));
|
| 548 |
|
|
map->l_initfini[j] = here;
|
| 549 |
|
|
|
| 550 |
|
|
break;
|
| 551 |
|
|
}
|
| 552 |
|
|
}
|
| 553 |
|
|
}
|
| 554 |
|
|
}
|
| 555 |
|
|
/* Terminate the list of dependencies. */
|
| 556 |
|
|
map->l_initfini[nlist] = NULL;
|
| 557 |
|
|
|
| 558 |
|
|
if (errno_reason)
|
| 559 |
|
|
_dl_signal_error (errno_reason == -1 ? 0 : errno_reason,
|
| 560 |
|
|
objname, NULL, errstring);
|
| 561 |
|
|
}
|
