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authorUlrich Drepper <drepper@redhat.com>1998-11-02 22:26:02 +0000
committerUlrich Drepper <drepper@redhat.com>1998-11-02 22:26:02 +0000
commite254df14d58746e1e09dca15f43e8a88c5c5218b (patch)
treec5ac1ab7b84d497d957f269a93d0eeb305854669 /elf
parente3e35cfc95cbfdc7829a5717af244d978d309f42 (diff)
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Update.
* elf/Makefile (libdl-routines): Add dlopenold. * elf/Versions [libdl, GLIBC_2.1]: Add dlopen. * elf/dl-open.c (_dl_open): Check whether RTLD_LAZY or RTLD_GLOBAL is set and bounce otherwise. * elf/dlopen.c: Rename function to __dlopen_check and make version named dlopen. * elf/dlopenold.c: New file. 1998-11-02 Ulrich Drepper <drepper@cygnus.com>
Diffstat (limited to 'elf')
-rw-r--r--elf/Makefile2
-rw-r--r--elf/Versions2
-rw-r--r--elf/dl-open.c4
-rw-r--r--elf/dlopen.c7
-rw-r--r--elf/dlopenold.c59
5 files changed, 71 insertions, 3 deletions
diff --git a/elf/Makefile b/elf/Makefile
index ddd9d222fb..763908e7c5 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -42,7 +42,7 @@ distribute = $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \
extra-libs = libdl
extra-libs-others = $(extra-libs)
-libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr
+libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr dlopenold
before-compile = $(objpfx)trusted-dirs.h
diff --git a/elf/Versions b/elf/Versions
index c8bea74545..ff01d78a10 100644
--- a/elf/Versions
+++ b/elf/Versions
@@ -32,6 +32,6 @@ libdl {
dladdr; dlclose; dlerror; dlopen; dlsym;
}
GLIBC_2.1 {
- dlvsym;
+ dlopen; dlvsym;
}
}
diff --git a/elf/dl-open.c b/elf/dl-open.c
index 9bbbee80f7..8cf1084a94 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -154,6 +154,10 @@ _dl_open (const char *file, int mode)
char *errstring;
int errcode;
+ if ((mode & RTLD_BINDING_MASK) == 0)
+ /* One of the flags must be set. */
+ _dl_signal_error (EINVAL, file, _("invalid mode for dlopen()"));
+
/* Make sure we are alone. */
__libc_lock_lock (_dl_load_lock);
diff --git a/elf/dlopen.c b/elf/dlopen.c
index d616e489f2..496fc7d386 100644
--- a/elf/dlopen.c
+++ b/elf/dlopen.c
@@ -41,7 +41,7 @@ dlopen_doit (void *a)
void *
-dlopen (const char *file, int mode)
+__dlopen_check (const char *file, int mode)
{
struct dlopen_args args;
args.file = file;
@@ -49,3 +49,8 @@ dlopen (const char *file, int mode)
return _dlerror_run (dlopen_doit, &args) ? NULL : args.new;
}
+#if defined PIC && defined DO_VERSIONING
+default_symbol_version (__dlopen_check, dlopen, GLIBC_2.1);
+#else
+weak_alias (__dlopen_check, dlopen)
+#endif
diff --git a/elf/dlopenold.c b/elf/dlopenold.c
new file mode 100644
index 0000000000..a9659ae3ec
--- /dev/null
+++ b/elf/dlopenold.c
@@ -0,0 +1,59 @@
+/* Load a shared object at run time.
+ Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifdef PIC
+
+#include <dlfcn.h>
+#include <stddef.h>
+#include <elf/ldsodefs.h>
+
+struct dlopen_args
+{
+ /* The arguments for dlopen_doit. */
+ const char *file;
+ int mode;
+ /* The return value of dlopen_doit. */
+ struct link_map *new;
+};
+
+
+static void
+dlopen_doit (void *a)
+{
+ struct dlopen_args *args = (struct dlopen_args *) a;
+
+ args->new = _dl_open (args->file ?: "", args->mode);
+}
+
+
+void *
+__dlopen_nocheck (const char *file, int mode)
+{
+ struct dlopen_args args;
+ args.file = file;
+
+ if ((mode & RTLD_BINDING_MASK) == 0)
+ /* By default assume RTLD_LAZY. */
+ mode |= RTLD_LAZY;
+ args.mode = mode;
+
+ return _dlerror_run (dlopen_doit, &args) ? NULL : args.new;
+}
+symbol_version (__dlopen_nocheck, dlopen, GLIBC_2.0);
+#endif