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Diffstat (limited to 'ldso/libdl/libdl.c')
-rw-r--r--ldso/libdl/libdl.c61
1 files changed, 31 insertions, 30 deletions
diff --git a/ldso/libdl/libdl.c b/ldso/libdl/libdl.c
index f914cf3be..8646a74d8 100644
--- a/ldso/libdl/libdl.c
+++ b/ldso/libdl/libdl.c
@@ -67,8 +67,7 @@ extern void _dl_perform_mips_global_got_relocations(struct elf_resolve *tpnt, in
extern char *_dl_debug;
#endif
-
-#else /* SHARED */
+#else /* !SHARED */
#define _dl_malloc malloc
#define _dl_free free
@@ -77,20 +76,20 @@ extern char *_dl_debug;
* the symbols that otherwise would have been loaded in from ldso... */
#ifdef __SUPPORT_LD_DEBUG__
-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;
+char *_dl_debug = NULL;
+char *_dl_debug_symbols = NULL;
+char *_dl_debug_move = NULL;
+char *_dl_debug_reloc = NULL;
+char *_dl_debug_detail = NULL;
+char *_dl_debug_nofixups = NULL;
+char *_dl_debug_bindings = NULL;
+int _dl_debug_file = NULL;
#endif
const char *_dl_progname = ""; /* Program name */
void *(*_dl_malloc_function)(size_t);
void (*_dl_free_function) (void *p);
-char *_dl_library_path = 0; /* Where we look for libraries */
-char *_dl_ldsopath = 0; /* Location of the shared lib loader */
+char *_dl_library_path = NULL; /* Where we look for libraries */
+char *_dl_ldsopath = NULL; /* Location of the shared lib loader */
int _dl_errno = 0; /* We can't use the real errno in ldso */
size_t _dl_pagesize = PAGE_SIZE; /* Store the page size for use later */
/* This global variable is also to communicate with debuggers such as gdb. */
@@ -117,7 +116,7 @@ struct r_debug *_dl_debug_addr = NULL;
static int do_dlclose(void *, int need_fini);
-static const char *dl_error_names[] = {
+static const char *const dl_error_names[] = {
"",
"File not found",
"Unable to open /dev/zero",
@@ -222,7 +221,8 @@ void *dlopen(const char *libname, int flag)
tfrom = tpnt;
}
}
- for (rpnt = _dl_symbol_tables; rpnt && rpnt->next; rpnt=rpnt->next);
+ for (rpnt = _dl_symbol_tables; rpnt && rpnt->next; rpnt = rpnt->next)
+ continue;
relro_ptr = rpnt;
now_flag = (flag & RTLD_NOW) ? RTLD_NOW : 0;
@@ -265,18 +265,17 @@ void *dlopen(const char *libname, int flag)
}
}
return dyn_chain;
- } else {
- tpnt->init_flag |= DL_OPENED;
}
+ tpnt->init_flag |= DL_OPENED;
+
_dl_if_debug_print("Looking for needed libraries\n");
nlist = 0;
runp = alloca(sizeof(*runp));
runp->tpnt = tpnt;
runp->next = NULL;
dep_list = runp2 = runp;
- for (; runp; runp = runp->next)
- {
+ for (; runp; runp = runp->next) {
ElfW(Dyn) *dpnt;
char *lpntstr;
@@ -397,7 +396,6 @@ void *dlopen(const char *libname, int flag)
}
/* TODO: Should we set the protections of all pages back to R/O now ? */
-
/* Notify the debugger we have added some objects. */
if (_dl_debug_addr) {
dl_brk = (void (*)(void)) _dl_debug_addr->r_brk;
@@ -453,10 +451,10 @@ void *dlsym(void *vhandle, const char *name)
char *name2 = tmp_buf;
size_t nlen = strlen (name) + 1;
if (nlen + 1 > sizeof (tmp_buf))
- name2 = malloc (nlen + 1);
+ name2 = malloc (nlen + 1);
if (name2 == 0) {
- _dl_error_number = LD_ERROR_MMAP_FAILED;
- return 0;
+ _dl_error_number = LD_ERROR_MMAP_FAILED;
+ return 0;
}
name2[0] = '_';
memcpy (name2 + 1, name, nlen);
@@ -500,7 +498,7 @@ void *dlsym(void *vhandle, const char *name)
}
tpnt = NULL;
if (handle == _dl_symbol_tables)
- tpnt = handle->dyn; /* Only search RTLD_GLOBAL objs if global object */
+ tpnt = handle->dyn; /* Only search RTLD_GLOBAL objs if global object */
ret = _dl_find_hash(name2, handle, tpnt, ELF_RTYPE_CLASS_DLSYM);
/*
@@ -566,8 +564,9 @@ static int do_dlclose(void *vhandle, int need_fini)
if (--tpnt->usage_count == 0) {
if ((tpnt->dynamic_info[DT_FINI]
|| tpnt->dynamic_info[DT_FINI_ARRAY])
- && need_fini &&
- !(tpnt->init_flag & FINI_FUNCS_CALLED)) {
+ && need_fini
+ && !(tpnt->init_flag & FINI_FUNCS_CALLED)
+ ) {
tpnt->init_flag |= FINI_FUNCS_CALLED;
_dl_run_fini_array(tpnt);
@@ -600,8 +599,8 @@ static int do_dlclose(void *vhandle, int need_fini)
_dl_loaded_modules = tpnt->next;
if (_dl_loaded_modules)
_dl_loaded_modules->prev = 0;
- } else
- for (run_tpnt = _dl_loaded_modules; run_tpnt; run_tpnt = run_tpnt->next)
+ } else {
+ for (run_tpnt = _dl_loaded_modules; run_tpnt; run_tpnt = run_tpnt->next) {
if (run_tpnt->next == tpnt) {
_dl_if_debug_print("removing loaded_modules: %s\n", tpnt->libname);
run_tpnt->next = run_tpnt->next->next;
@@ -609,6 +608,8 @@ static int do_dlclose(void *vhandle, int need_fini)
run_tpnt->next->prev = run_tpnt;
break;
}
+ }
+ }
/* Next, remove tpnt from the global symbol table list */
if (_dl_symbol_tables) {
@@ -616,7 +617,7 @@ static int do_dlclose(void *vhandle, int need_fini)
_dl_symbol_tables = _dl_symbol_tables->next;
if (_dl_symbol_tables)
_dl_symbol_tables->prev = 0;
- } else
+ } else {
for (rpnt1 = _dl_symbol_tables; rpnt1->next; rpnt1 = rpnt1->next) {
if (rpnt1->next->dyn == tpnt) {
_dl_if_debug_print("removing symbol_tables: %s\n", tpnt->libname);
@@ -628,6 +629,7 @@ static int do_dlclose(void *vhandle, int need_fini)
break;
}
}
+ }
}
free(tpnt->libname);
free(tpnt);
@@ -636,7 +638,6 @@ static int do_dlclose(void *vhandle, int need_fini)
free(handle->init_fini.init_fini);
free(handle);
-
if (_dl_debug_addr) {
dl_brk = (void (*)(void)) _dl_debug_addr->r_brk;
if (dl_brk != NULL) {
@@ -671,7 +672,7 @@ char *dlerror(void)
* Dump information to stderr about the current loaded modules
*/
#ifdef __USE_GNU
-static char *type[] = { "Lib", "Exe", "Int", "Mod" };
+static const char type[][4] = { "Lib", "Exe", "Int", "Mod" };
int dlinfo(void)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-09 20:58:08 +0000