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authorRoland McGrath <roland@gnu.org>2003-03-10 09:12:11 +0000
committerRoland McGrath <roland@gnu.org>2003-03-10 09:12:11 +0000
commit8dd569934c2019dff527f0587f3d809efeec7c03 (patch)
tree56541d1fa27eed805f18da76464f4b1be727adb5 /dlfcn
parente48f96382f237c0edad5c446eca867092406a51d (diff)
downloadglibc-8dd569934c2019dff527f0587f3d809efeec7c03.tar.gz
2003-03-10 Roland McGrath <roland@redhat.com>
* dlfcn/Makefile (libdl-routines): Add dladdr1. * dlfcn/dladdr1.c: New file. * dlfcn/dlfcn.h [__USE_GNU]: Declare dladdr1. [__USE_GNU] (RTLD_DL_SYMENT, RTLD_DL_LINKMAP): New enum constants. * elf/dl-addr.c (_dl_addr): Take new args, a struct link_map ** and a const ElfNN_Sym ** to fill in. * include/dlfcn.h: Update decl. Include <link.h>. * dlfcn/dladdr.c (dladdr): Update caller. * malloc/mtrace.c (tr_where): Likewise. * sysdeps/generic/elf/backtracesyms.c: Likewise. * sysdeps/generic/elf/backtracesymsfd.c: Likewise. * dlfcn/Versions (libdl: GLIBC_2.3.3): New set, add dladdr1. * Versions.def (libdl): Define GLIBC_2.3.3 set.
Diffstat (limited to 'dlfcn')
-rw-r--r--dlfcn/Makefile2
-rw-r--r--dlfcn/Versions3
-rw-r--r--dlfcn/dladdr.c4
-rw-r--r--dlfcn/dladdr1.c35
-rw-r--r--dlfcn/dlfcn.h19
5 files changed, 59 insertions, 4 deletions
diff --git a/dlfcn/Makefile b/dlfcn/Makefile
index 40eb7888cc..d11336140e 100644
--- a/dlfcn/Makefile
+++ b/dlfcn/Makefile
@@ -19,7 +19,7 @@
subdir := dlfcn
headers := bits/dlfcn.h dlfcn.h
extra-libs := libdl
-libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr eval
+libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr dladdr1 eval
distribute := dlopenold.c glreflib1.c glreflib2.c failtestmod.c eval.c \
defaultmod1.c defaultmod2.c errmsg1mod.c modatexit.c \
modcxaatexit.c modstatic.c \
diff --git a/dlfcn/Versions b/dlfcn/Versions
index b99822ad08..ca44a4678f 100644
--- a/dlfcn/Versions
+++ b/dlfcn/Versions
@@ -5,4 +5,7 @@ libdl {
GLIBC_2.1 {
dlopen; dlvsym;
}
+ GLIBC_2.3.3 {
+ dladdr1;
+ }
}
diff --git a/dlfcn/dladdr.c b/dlfcn/dladdr.c
index 2ebc652d3a..b5490e5a8d 100644
--- a/dlfcn/dladdr.c
+++ b/dlfcn/dladdr.c
@@ -1,5 +1,5 @@
/* Locate the shared object symbol nearest a given address.
- Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2003 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
@@ -22,5 +22,5 @@
int
dladdr (const void *address, Dl_info *info)
{
- return _dl_addr (address, info);
+ return _dl_addr (address, info, NULL, NULL);
}
diff --git a/dlfcn/dladdr1.c b/dlfcn/dladdr1.c
new file mode 100644
index 0000000000..51b53b5861
--- /dev/null
+++ b/dlfcn/dladdr1.c
@@ -0,0 +1,35 @@
+/* Locate the shared object symbol nearest a given address.
+ Copyright (C) 2003 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <dlfcn.h>
+
+int
+dladdr1 (const void *address, Dl_info *info, void **extra, int flags)
+{
+ switch (flags)
+ {
+ default: /* Make this an error? */
+ case 0:
+ return _dl_addr (address, info, NULL, NULL);
+ case RTLD_DL_SYMENT:
+ return _dl_addr (address, info, NULL, (const ElfW(Sym) **) extra);
+ case RTLD_DL_LINKMAP:
+ return _dl_addr (address, info, (struct link_map **) extra, NULL);
+ }
+}
diff --git a/dlfcn/dlfcn.h b/dlfcn/dlfcn.h
index 6f88a897ce..6c8e4abcc4 100644
--- a/dlfcn/dlfcn.h
+++ b/dlfcn/dlfcn.h
@@ -1,5 +1,5 @@
/* User functions for run-time dynamic loading.
- Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1995-1999,2000,2001,2003 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
@@ -83,6 +83,23 @@ typedef struct
/* Fill in *INFO with the following information about ADDRESS.
Returns 0 iff no shared object's segments contain that address. */
extern int dladdr (__const void *__address, Dl_info *__info) __THROW;
+
+/* Same as `dladdr', but additionally sets *EXTRA_INFO according to FLAGS. */
+extern int dladdr1 (__const void *__address, Dl_info *__info,
+ void **__extra_info, int __flags) __THROW;
+
+/* These are the possible values for the FLAGS argument to `dladdr1'.
+ This indicates what extra information is stored at *EXTRA_INFO.
+ It may also be zero, in which case the EXTRA_INFO argument is not used. */
+enum
+ {
+ /* Matching symbol table entry (const ElfNN_Sym *). */
+ RTLD_DL_SYMENT = 1,
+
+ /* The object containing the address (struct link_map *). */
+ RTLD_DL_LINKMAP = 2
+ };
+
#endif
__END_DECLS