Fix libdl bug reported by Cedric Hombourger in

http://uclibc.org/lists/uclibc/2007-January/017165.html

2 files changed, 32 insertions, 30 deletions

diff --git a/ldso/ldso/ldso.c b/ldso/ldso/ldso.c
index f8f3dc67c..d31ae1d73 100644
--- a/ldso/ldso/ldso.c
+++ b/ldso/ldso/ldso.c
@@ -192,6 +192,7 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 	unsigned long *_dl_envp;		/* The environment address */
 	ElfW(Addr) relro_addr = 0;
 	size_t relro_size = 0;
+	struct stat st;
 
 	/* Wahoo!!! We managed to make a function call!  Get malloc
 	 * setup so we can use _dl_dprintf() to print debug noise
@@ -725,6 +726,10 @@ void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
 					      (unsigned long)tpnt->dynamic_addr,
 					      0);
 
+		if (_dl_stat(tpnt->libname, &st) >= 0) {
+			tpnt->st_dev = st.st_dev;
+			tpnt->st_ino = st.st_ino;
+		} 
 		tpnt->n_phent = epnt->e_phnum;
 		tpnt->ppnt = myppnt;
 		for (j = 0; j < epnt->e_phnum; j++, myppnt++) {
diff --git a/ldso/libdl/libdl.c b/ldso/libdl/libdl.c
index e7e33c426..505f09546 100644
--- a/ldso/libdl/libdl.c
+++ b/ldso/libdl/libdl.c
@@ -246,36 +246,31 @@ void *dlopen(const char *libname, int flag)
 
 				tpnt1->rtld_flags |= (flag & RTLD_GLOBAL);
 
-				if (tpnt1->usage_count == 1) {
-					tpnt1->init_flag |= DL_OPENED;
-					/* This list is for dlsym() and relocation */
-					dyn_ptr->next = (struct dyn_elf *) malloc(sizeof(struct dyn_elf));
-					_dl_memset (dyn_ptr->next, 0, sizeof (struct dyn_elf));
-					dyn_ptr = dyn_ptr->next;
-					dyn_ptr->dyn = tpnt1;
-				}
-				if (tpnt1->init_flag & DL_OPENED) {
-					/* Used to record RTLD_LOCAL scope */
-					tmp = alloca(sizeof(struct init_fini_list));
-					tmp->tpnt = tpnt1;
-					tmp->next = runp->tpnt->init_fini;
-					runp->tpnt->init_fini = tmp;
-
-					for (tmp=dep_list; tmp; tmp = tmp->next) {
-						if (tpnt1 == tmp->tpnt) { /* if match => cirular dependency, drop it */
-							_dl_if_debug_print("Circular dependency, skipping '%s',\n",
-									tmp->tpnt->libname);
-							tpnt1->usage_count--;
-							break;
-						}
-					}
-					if (!tmp) { /* Don't add if circular dependency detected */
-						runp2->next = alloca(sizeof(*runp));
-						runp2 = runp2->next;
-						runp2->tpnt = tpnt1;
-						runp2->next = NULL;
+				/* This list is for dlsym() and relocation */
+				dyn_ptr->next = (struct dyn_elf *) malloc(sizeof(struct dyn_elf));
+				_dl_memset (dyn_ptr->next, 0, sizeof (struct dyn_elf));
+				dyn_ptr = dyn_ptr->next;
+				dyn_ptr->dyn = tpnt1;
+				/* Used to record RTLD_LOCAL scope */
+				tmp = alloca(sizeof(struct init_fini_list));
+				tmp->tpnt = tpnt1;
+				tmp->next = runp->tpnt->init_fini;
+				runp->tpnt->init_fini = tmp;
+
+				for (tmp=dep_list; tmp; tmp = tmp->next) {
+					if (tpnt1 == tmp->tpnt) { /* if match => cirular dependency, drop it */
+						_dl_if_debug_print("Circular dependency, skipping '%s',\n",
+								   tmp->tpnt->libname);
+						tpnt1->usage_count--;
+						break;
 					}
 				}
+				if (!tmp) { /* Don't add if circular dependency detected */
+					runp2->next = alloca(sizeof(*runp));
+					runp2 = runp2->next;
+					runp2->tpnt = tpnt1;
+					runp2->next = NULL;
+				}
 			}
 		}
 	}
@@ -441,8 +436,10 @@ void *dlsym(void *vhandle, const char *name)
 			}
 		}
 	}
-
-	ret = _dl_find_hash((char*)name, handle, NULL, 0);
+	tpnt = NULL;
+	if (handle == _dl_symbol_tables)
+	   tpnt = handle->dyn; /* Only search RTLD_GLOBAL objs if global object */
+	ret = _dl_find_hash((char*)name, handle, tpnt, 0);
 
 	/*
 	 * Nothing found.