1/*-
2 * Copyright 1996, 1997, 1998, 1999, 2000 John D. Polstra.
3 * Copyright 2003 Alexander Kabaev <kan@FreeBSD.ORG>.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

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18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/libexec/rtld-elf/rtld.c 214728 2010-11-03 09:23:08Z kib $
27 */
28
29/*
30 * Dynamic linker for ELF.
31 *
32 * John Polstra <jdp@polstra.com>.
33 */
34

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1270 return hints[0] != '\0' ? hints : NULL;
1271}
1272
1273static void
1274init_dag(Obj_Entry *root)
1275{
1276 DoneList donelist;
1277
1278 if (root->dag_inited)
1279 return;
1280 donelist_init(&donelist);
1281 init_dag1(root, root, &donelist);
1282 root->dag_inited = true;
1283}
1284
1285static void
1286init_dag1(Obj_Entry *root, Obj_Entry *obj, DoneList *dlp)
1287{
1288 const Needed_Entry *needed;
1289
1290 if (donelist_check(dlp, obj))

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2043 unload_object(obj);
2044 obj = NULL;
2045 } else {
2046 /* Make list of init functions to call. */
2047 initlist_add_objects(obj, &obj->next, &initlist);
2048 }
2049 } else {
2050
2051 /*
2052 * Bump the reference counts for objects on this DAG. If
2053 * this is the first dlopen() call for the object that was
2054 * already loaded as a dependency, initialize the dag
2055 * starting at it.
2056 */
2057 if (obj->dl_refcount == 1)
2058 init_dag(obj);
2059 else
2060 ref_dag(obj);
2061
2062 if (ld_tracing)
2063 goto trace;
2064 }
2065 if (obj != NULL && (nodelete || obj->z_nodelete) && !obj->ref_nodel) {
2066 dbg("obj %s nodelete", obj->path);
2067 ref_dag(obj);
2068 obj->z_nodelete = obj->ref_nodel = true;

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