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Diffstat (limited to 'ldso/libdl/libdl.c')
-rw-r--r--ldso/libdl/libdl.c81
1 files changed, 46 insertions, 35 deletions
diff --git a/ldso/libdl/libdl.c b/ldso/libdl/libdl.c
index 6d287a794..dec41848c 100644
--- a/ldso/libdl/libdl.c
+++ b/ldso/libdl/libdl.c
@@ -34,6 +34,8 @@ extern char *_dl_find_hash(const char *, struct dyn_elf *, struct elf_resolve *,
__attribute__ ((__weak__, __alias__ ("foobar")));
extern struct elf_resolve * _dl_load_shared_library(int, struct dyn_elf **, struct elf_resolve *, char *)
__attribute__ ((__weak__, __alias__ ("foobar")));
+extern struct elf_resolve * _dl_check_if_named_library_is_loaded(const char *full_libname)
+ __attribute__ ((__weak__, __alias__ ("foobar")));
extern int _dl_fixup(struct elf_resolve *tpnt, int lazy)
__attribute__ ((__weak__, __alias__ ("foobar")));
extern int _dl_copy_fixups(struct dyn_elf * tpnt)
@@ -54,20 +56,27 @@ extern struct r_debug *_dl_debug_addr __attribute__ ((__weak__, __alias__ ("foob
extern unsigned long _dl_error_number __attribute__ ((__weak__, __alias__ ("foobar1")));
extern void *(*_dl_malloc_function)(size_t) __attribute__ ((__weak__, __alias__ ("foobar1")));
#ifdef __SUPPORT_LD_DEBUG__
-#define _dl_debug_file 2
+extern char *_dl_debug __attribute__ ((__weak__, __alias__ ("foobar1")));
+extern char *_dl_debug_symbols __attribute__ ((__weak__, __alias__ ("foobar1")));
+extern char *_dl_debug_move __attribute__ ((__weak__, __alias__ ("foobar1")));
+extern char *_dl_debug_reloc __attribute__ ((__weak__, __alias__ ("foobar1")));
+extern char *_dl_debug_detail __attribute__ ((__weak__, __alias__ ("foobar1")));
+extern char *_dl_debug_nofixups __attribute__ ((__weak__, __alias__ ("foobar1")));
+extern char *_dl_debug_bindings __attribute__ ((__weak__, __alias__ ("foobar1")));
+extern int _dl_debug_file __attribute__ ((__weak__, __alias__ ("foobar1")));
#endif
-#else
+
+#else /* __PIC__ */
+
#ifdef __SUPPORT_LD_DEBUG__
-static char *_dl_debug = 0;
-static char *_dl_debug_symbols = 0;
-static char *_dl_debug_move = 0;
-static char *_dl_debug_reloc = 0;
-static char *_dl_debug_detail = 0;
-static char *_dl_debug_nofixups = 0;
-static char *_dl_debug_bindings = 0;
-static int _dl_debug_file = 2;
-#elif defined __SUPPORT_LD_DEBUG_EARLY__
-#define _dl_debug_file 2
+char *_dl_debug = 0;
+char *_dl_debug_symbols = 0;
+char *_dl_debug_move = 0;
+char *_dl_debug_reloc = 0;
+char *_dl_debug_detail = 0;
+char *_dl_debug_nofixups = 0;
+char *_dl_debug_bindings = 0;
+int _dl_debug_file = 2;
#endif
char *_dl_library_path = 0;
char *_dl_ldsopath = 0;
@@ -75,6 +84,7 @@ struct r_debug *_dl_debug_addr = NULL;
static char *_dl_malloc_addr, *_dl_mmap_zero;
#include "../ldso/_dl_progname.h" /* Pull in the name of ld.so */
#include "../ldso/hash.c"
+#define _dl_trace_loaded_objects 0
#include "../ldso/readelflib1.c"
void *(*_dl_malloc_function) (size_t size);
int _dl_fixup(struct elf_resolve *tpnt, int lazy);
@@ -168,6 +178,7 @@ void *_dlopen(const char *libname, int flag)
/* Try to load the specified library */
#ifdef __SUPPORT_LD_DEBUG__
+ if(_dl_debug)
_dl_dprintf(_dl_debug_file, "Trying to dlopen '%s'\n", (char*)libname);
#endif
if (!(tpnt = _dl_load_shared_library(0, &rpnt, tfrom, (char*)libname))) {
@@ -189,39 +200,35 @@ void *_dlopen(const char *libname, int flag)
#ifdef __SUPPORT_LD_DEBUG__
+ if(_dl_debug)
_dl_dprintf(_dl_debug_file, "Looking for needed libraries\n");
#endif
for (tcurr = tpnt; tcurr; tcurr = tcurr->next)
{
Elf32_Dyn *dpnt;
char *lpntstr;
- const char *libname1, *ptr;
for (dpnt = (Elf32_Dyn *) tcurr->dynamic_addr; dpnt->d_tag; dpnt++) {
if (dpnt->d_tag == DT_NEEDED) {
- lpntstr = (char*)tcurr->loadaddr + tcurr->dynamic_info[DT_STRTAB] +
- dpnt->d_un.d_val;
-
- /* Skip over any initial initial './' and '/' stuff to
- * get the short form libname with no path garbage */
- libname1 = lpntstr;
- ptr = _dl_strrchr(libname1, '/');
- if (ptr) {
- libname1 = ptr + 1;
- }
-
- /* Linked with glibc? */
- if (_dl_strcmp(libname1, "libc.so.6") == 0) {
- _dl_dprintf(2, "\tERROR: %s is linked with GNU libc!\n",
- tcurr->libname);
- goto oops;
- }
+ char *name;
+ lpntstr = (char*) (tcurr->loadaddr + tcurr->dynamic_info[DT_STRTAB] +
+ dpnt->d_un.d_val);
+ name = _dl_get_last_path_component(lpntstr);
#ifdef __SUPPORT_LD_DEBUG__
+ if(_dl_debug)
_dl_dprintf(_dl_debug_file, "Trying to load '%s', needed by '%s'\n",
lpntstr, tcurr->libname);
#endif
-
+#if 0
+ if ((tpnt1 = _dl_check_if_named_library_is_loaded(name)))
+ {
+ /* If the needed library is already loaded, then we
+ * need to override all globals and weaks in the current
+ * chain... Or something. */
+ continue;
+ }
+#endif
if (!(tpnt1 = _dl_load_shared_library(0, &rpnt, tcurr, lpntstr))) {
goto oops;
@@ -254,6 +261,7 @@ void *_dlopen(const char *libname, int flag)
#endif
#ifdef __SUPPORT_LD_DEBUG__
+ if(_dl_debug)
_dl_dprintf(_dl_debug_file, "Beginning dlopen relocation fixups\n");
#endif
/*
@@ -265,6 +273,7 @@ void *_dlopen(const char *libname, int flag)
goto oops;
#ifdef __SUPPORT_LD_DEBUG__
+ if(_dl_debug)
_dl_dprintf(_dl_debug_file, "Beginning dlopen copy fixups\n");
#endif
if (_dl_symbol_tables) {
@@ -289,22 +298,22 @@ void *_dlopen(const char *libname, int flag)
}
}
-#ifdef __SUPPORT_LD_DEBUG__
+#if 0 //def __SUPPORT_LD_DEBUG__
+ if(_dl_debug)
_dlinfo();
#endif
#ifdef __PIC__
/* Find the last library so we can run things in the right order */
- for (rpnt = _dl_symbol_tables; rpnt!=NULL&& rpnt->next!=NULL; rpnt=rpnt->next)
+ for (tpnt = dyn_chain->dyn; tpnt->next!=NULL; tpnt = tpnt->next)
;
/* Run the ctors and set up the dtors */
- for (;rpnt!=NULL; rpnt=rpnt->prev)
+ for (; tpnt != dyn_chain->dyn->prev; tpnt=tpnt->prev)
{
/* Apparently crt1 for the application is responsible for handling this.
* We only need to run the init/fini for shared libraries
*/
- tpnt = rpnt->dyn;
if (tpnt->libtype == program_interpreter)
continue;
if (tpnt->libtype == elf_executable)
@@ -318,6 +327,7 @@ void *_dlopen(const char *libname, int flag)
dl_elf_func = (void (*)(void)) (tpnt->loadaddr + tpnt->dynamic_info[DT_INIT]);
if (dl_elf_func && *dl_elf_func != NULL) {
#ifdef __SUPPORT_LD_DEBUG__
+ if(_dl_debug)
_dl_dprintf(2, "running ctors for library %s at '%x'\n", tpnt->libname, dl_elf_func);
#endif
(*dl_elf_func) ();
@@ -328,6 +338,7 @@ void *_dlopen(const char *libname, int flag)
dl_elf_func = (void (*)(void)) (tpnt->loadaddr + tpnt->dynamic_info[DT_FINI]);
if (dl_elf_func && *dl_elf_func != NULL) {
#ifdef __SUPPORT_LD_DEBUG__
+ if(_dl_debug)
_dl_dprintf(2, "setting up dtors for library %s at '%x'\n", tpnt->libname, dl_elf_func);
#endif
atexit(dl_elf_func);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 05:18:10 +0000