* csu/elf-init.c (__libc_csu_fini): Don't do anything here.

* sysdeps/generic/libc-start.c: Don't register program destructor here.
	* dlfcn/Makefile: Add rules to build dlfcn.c.
	(LDFLAGS-dl.so): Removed.
	* dlfcn/dlclose.c: _dl_close is now in ld.so, use function pointer
	table.
	* dlfcn/dlmopen.c: Likewise for _dl_open.
	* dlfcn/dlopen.c: Likewise.
	* dlfcn/dlopenold.c: Likewise.
	* elf/dl-libc.c: Likewise for _dl_open and _dl_close.
	* elf/Makefile (routines): Remove dl-open and dl-close.
	(dl-routines): Add dl-open, dl-close, and dl-trampoline.
	Add rules to build and run tst-audit1.
	* elf/tst-audit1.c: New file.
	* elf/tst-auditmod1.c: New file.
	* elf/Versions [libc]: Remove _dl_open and _dl_close.
	* elf/dl-close.c: Change for use inside ld.so instead of libc.so.
	* elf/dl-open.c: Likewise.
	* elf/dl-debug.c (_dl_debug_initialize): Allow reinitialization,
	signaled by nonzero parameter.
	* elf/dl-init.c: Fix use of r_state.
	* elf/dl-load.c: Likewise.

	* elf/dl-close.c: Add auditing checkpoints.
	* elf/dl-open.c: Likewise.
	* elf/dl-fini.c: Likewise.
	* elf/dl-load.c: Likewise.
	* elf/dl-sym.c: Likewise.
	* sysdeps/generic/libc-start.c: Likewise.
	* elf/dl-object.c: Allocate memory for auditing information.
	* elf/dl-reloc.c: Remove RESOLV.  We now always need the map.
	Correctly initialize slotinfo.
	* elf/dynamic-link.h: Adjust after removal of RESOLV.
	* sysdeps/hppa/dl-lookupcfg.h: Likewise.
	* sysdeps/ia64/dl-lookupcfg.h: Likewise.
	* sysdeps/powerpc/powerpc64/dl-lookupcfg.h: Removed.
	* elf/dl-runtime.c (_dl_fixup): Little cleanup.
	(_dl_profile_fixup): New parameters to point to register struct and
	variable for frame size.
	Add auditing checkpoints.
	(_dl_call_pltexit): New function.
	Don't define trampoline code here.
	* elf/rtld.c: Recognize LD_AUDIT.  Load modules on startup.
	Remove all the functions from _rtld_global_ro which only _dl_open
	and _dl_close needed.
	Add auditing checkpoints.
	* elf/link.h: Define symbols for auditing interfaces.
	* include/link.h: Likewise.
	* include/dlfcn.h: Define __RTLD_AUDIT.
	Remove prototypes for _dl_open and _dl_close.
	Adjust access to argc and argv in libdl.
	* dlfcn/dlfcn.c: New file.
	* sysdeps/generic/dl-lookupcfg.h: Remove all content now that RESOLVE
	is gone.
	* sysdeps/generic/ldsodefs.h: Add definitions for auditing interfaces.
	* sysdeps/generic/unsecvars.h: Add LD_AUDIT.
	* sysdeps/i386/dl-machine.h: Remove trampoline code here.
	Adjust for removal of RESOLVE.
	* sysdeps/x86_64/dl-machine.h: Likewise.
	* sysdeps/generic/dl-trampoline.c: New file.
	* sysdeps/i386/dl-trampoline.c: New file.
	* sysdeps/x86_64/dl-trampoline.c: New file.

	* sysdeps/generic/dl-tls.c: Cleanups.  Fixup for dtv_t change.
	Fix updating of DTV.
	* sysdeps/generic/libc-tls.c: Likewise.

	* sysdeps/arm/bits/link.h: Renamed to ...
	* sysdeps/arm/buts/linkmap.h: ...this.
	* sysdeps/generic/bits/link.h: Renamed to...
	* sysdeps/generic/bits/linkmap.h: ...this.
	* sysdeps/hppa/bits/link.h: Renamed to...
	* sysdeps/hppa/bits/linkmap.h: ...this.
	* sysdeps/hppa/i386/link.h: Renamed to...
	* sysdeps/hppa/i386/linkmap.h: ...this.
	* sysdeps/hppa/ia64/link.h: Renamed to...
	* sysdeps/hppa/ia64/linkmap.h: ...this.
	* sysdeps/hppa/s390/link.h: Renamed to...
	* sysdeps/hppa/s390/linkmap.h: ...this.
	* sysdeps/hppa/sh/link.h: Renamed to...
	* sysdeps/hppa/sh/linkmap.h: ...this.
	* sysdeps/hppa/x86_64/link.h: Renamed to...
	* sysdeps/hppa/x86_64/linkmap.h: ...this.
2005-01-06  Ulrich Drepper  <drepper@redhat.com>

	* allocatestack.c (init_one_static_tls): Adjust initialization of DTV
	entry for static tls deallocation fix.
	* sysdeps/alpha/tls.h (dtv_t): Change pointer type to be struct which
	also contains information whether the memory pointed to is static
	TLS or not.
	* sysdeps/i386/tls.h: Likewise.
	* sysdeps/ia64/tls.h: Likewise.
	* sysdeps/powerpc/tls.h: Likewise.
	* sysdeps/s390/tls.h: Likewise.
	* sysdeps/sh/tls.h: Likewise.
	* sysdeps/sparc/tls.h: Likewise.
	* sysdeps/x86_64/tls.h: Likewise.

2 files changed, 86 insertions, 16 deletions

diff --git a/include/dlfcn.h b/include/dlfcn.h
index bfa1b9041b..460c037ed1 100644
--- a/include/dlfcn.h
+++ b/include/dlfcn.h
@@ -7,9 +7,24 @@
 #define __RTLD_SPROF	0x40000000
 #define __RTLD_OPENEXEC	0x20000000
 #define __RTLD_CALLMAP	0x10000000
+#define __RTLD_AUDIT	0x08000000
 
 #define __LM_ID_CALLER	-2
 
+#ifdef SHARED
+/* Locally stored program arguments.  */
+extern int __dlfcn_argc attribute_hidden;
+extern char **__dlfcn_argv attribute_hidden;
+#else
+/* These variables are defined and initialized in the startup code.  */
+extern int __libc_argc attribute_hidden;
+extern char **__libc_argv attribute_hidden;
+
+# define __dlfcn_argc __libc_argc
+# define __dlfcn_argv __libc_argv
+#endif
+
+
 /* Now define the internal interfaces.  */
 
 #define __libc_dlopen(name) \
@@ -29,18 +44,8 @@ extern int _dl_addr (const void *address, Dl_info *info,
 libc_hidden_proto (_dl_addr)
 #endif
 
-/* Open the shared object NAME, relocate it, and run its initializer if it
-   hasn't already been run.  MODE is as for `dlopen' (see <dlfcn.h>).  If
-   the object is already opened, returns its existing map.  */
-extern void *_dl_open (const char *name, int mode, const void *caller,
-		       Lmid_t nsid)
-     internal_function;
-libc_hidden_proto (_dl_open)
-
 /* Close an object previously opened by _dl_open.  */
-extern void _dl_close (void *map)
-     internal_function;
-libc_hidden_proto (_dl_close)
+extern void _dl_close (void *map) attribute_hidden;
 
 /* Look up NAME in shared object HANDLE (which may be RTLD_DEFAULT or
    RTLD_NEXT).  WHO is the calling function, for RTLD_NEXT.  Returns
diff --git a/include/link.h b/include/link.h
index 3078b72a87..49e0e1b041 100644
--- a/include/link.h
+++ b/include/link.h
@@ -34,6 +34,7 @@
 
 #include <bits/elfclass.h>		/* Defines __ELF_NATIVE_CLASS.  */
 #include <bits/link.h>
+#include <bits/linkmap.h>
 #include <dl-lookupcfg.h>
 #include <tls.h>		/* Defines USE_TLS.  */
 
@@ -199,6 +200,10 @@ struct link_map
 				       should be called on this link map
 				       when relocation finishes.  */
     unsigned int l_used:1;	/* Nonzero if the DSO is used.  */
+    unsigned int l_auditing:1;	/* Nonzero if the DSO is used in auditing.  */
+    unsigned int l_audit_any_plt:1; /* Nonzero if at least one audit module
+				       is interested in the PLT interception.*/
+
     /* Array with version names.  */
     unsigned int l_nversions;
     struct r_found_version *l_versions;
@@ -207,7 +212,14 @@ struct link_map
     struct r_search_path_struct l_rpath_dirs;
 
     /* Collected results of relocation while profiling.  */
-    ElfW(Addr) *l_reloc_result;
+    struct reloc_result
+    {
+      ElfW(Addr) addr;
+      struct link_map *bound;
+      unsigned int boundndx;
+      uint32_t enterexit;
+      unsigned int flags;
+    } *l_reloc_result;
 
     /* Pointer to the version information if available.  */
     ElfW(Versym) *l_versyms;
@@ -263,11 +275,7 @@ struct link_map
     {
       const ElfW(Sym) *sym;
       int type_class;
-#ifdef DL_LOOKUP_RETURNS_MAP
       struct link_map *value;
-#else
-      ElfW(Addr) value;
-#endif
       const ElfW(Sym) *ret;
     } l_lookup_cache;
 
@@ -297,8 +305,65 @@ struct link_map
        done.  */
     ElfW(Addr) l_relro_addr;
     size_t l_relro_size;
+
+    /* Audit information.  This array apparent must be the last in the
+       structure.  Never add something after it.  */
+    struct auditstate
+    {
+      uintptr_t cookie;
+      unsigned int bindflags;
+    } l_audit[0];
+  };
+
+/* Version numbers for la_version handshake interface.  */
+#define LAV_CURRENT	1
+
+/* Activity types signaled through la_activity.  */
+enum
+  {
+    LA_ACT_CONSISTENT,
+    LA_ACT_ADD,
+    LA_ACT_DELETE
+  };
+
+/* Values representing origin of name for dynamic loading.  */
+enum
+  {
+    LA_SER_ORIG = 0x01,		/* Original name.  */
+    LA_SER_LIBPATH = 0x02,	/* Directory from LD_LIBRARY_PATH.  */
+    LA_SER_RUNPATH = 0x04,	/* Directory from RPATH/RUNPATH.  */
+    LA_SER_CONFIG = 0x08,	/* Found through ldconfig.  */
+    LA_SER_DEFAULT = 0x40,	/* Default directory.  */
+    LA_SER_SECURE = 0x80	/* Unused.  */
+  };
+
+/* Values for la_objopen return value.  */
+enum
+  {
+    LA_FLG_BINDTO = 0x01,	/* Audit symbols bound to this object.  */
+    LA_FLG_BINDFROM = 0x02	/* Audit symbols bound from this object.  */
   };
 
+/* Values for la_symbind flags parameter.  */
+enum
+  {
+    LA_SYMB_NOPLTENTER = 0x01,	/* la_pltenter will not be called.  */
+    LA_SYMB_NOPLTEXIT = 0x02,	/* la_pltexit will not be called.  */
+    LA_SYMB_STRUCTCALL = 0x04,	/* Return value is a structure.  */
+    LA_SYMB_DLSYM = 0x08,	/* Binding due to dlsym call.  */
+    LA_SYMB_ALTVALUE = 0x10	/* Value has been changed by a previous
+				   la_symbind call.  */
+  };
+
+#if __ELF_NATIVE_CLASS == 32
+# define symbind symbind32
+# define pltenter plt
+#elif __ELF_NATIVE_CLASS == 64
+# define symbind symbind64
+#else
+# error "__ELF_NATIVE_CLASS must be defined"
+#endif
+
 struct dl_phdr_info
   {
     ElfW(Addr) dlpi_addr;