[SCM] master: elfutils: load dynsym when debuginfo not available

[pmachata@sourceware.org]

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- Log -----------------------------------------------------------------
commit 35c524fa916d0a8fa8a68fce1164f7dbd7c3bad3
Author: Petr Machata <pmachata@redhat.com>
Date:   Wed Apr 2 06:29:08 2008 +0200

    elfutils: load dynsym when debuginfo not available

-----------------------------------------------------------------------

Summary of changes:
 frysk-imports/elfutils/libdwfl/ChangeLog           |    6 ++++++
 .../elfutils/libdwfl/dwfl_module_getdwarf.c        |   15 +++++++++++++++
 2 files changed, 21 insertions(+), 0 deletions(-)

First 500 lines of diff:
diff --git a/frysk-imports/elfutils/libdwfl/ChangeLog b/frysk-imports/elfutils/libdwfl/ChangeLog
index 30272d1..9182f49 100644
--- a/frysk-imports/elfutils/libdwfl/ChangeLog
+++ b/frysk-imports/elfutils/libdwfl/ChangeLog
@@ -1,3 +1,9 @@
+2008-04-02  Petr Machata  <pmachata@redhat.com>
+
+	* dwfl_module_getdwarf.c (find_debuginfo): Return DWFL_E_CB when
+	the callback results in an error.
+	(find_file): Likewise.
+
 2008-03-24  Stan Cox  <scox@redhat.com>
 
 	* dwfl_module_getdwarf.c (load_symtab): Keep looking for an external
diff --git a/frysk-imports/elfutils/libdwfl/dwfl_module_getdwarf.c b/frysk-imports/elfutils/libdwfl/dwfl_module_getdwarf.c
index 4044514..5e84924 100644
--- a/frysk-imports/elfutils/libdwfl/dwfl_module_getdwarf.c
+++ b/frysk-imports/elfutils/libdwfl/dwfl_module_getdwarf.c
@@ -117,6 +117,15 @@ find_file (Dwfl_Module *mod)
   mod->main.fd = (*mod->dwfl->callbacks->find_elf) (MODCB_ARGS (mod),
 						    &mod->main.name,
 						    &mod->main.elf);
+
+  /* Bail out on error, but if there was a pre-primed file name left
+     behind by the callback, try to open that file name.  */
+  if (mod->main.fd < 0 && mod->main.name == NULL)
+    {
+      mod->elferr = DWFL_E_CB;
+      return;
+    }
+
   mod->elferr = open_elf (mod, &mod->main);
 
   if (mod->elferr == DWFL_E_NOERROR && !mod->main.valid)
@@ -206,6 +215,12 @@ find_debuginfo (Dwfl_Module *mod)
 							   debuglink_file,
 							   debuglink_crc,
 							   &mod->debug.name);
+
+  /* Bail out on error, but if there was a pre-primed file name left
+     behind by the callback, try to open that file name.  */
+  if (mod->debug.fd < 0 && mod->debug.name == NULL)
+    return DWFL_E_CB;
+
   return open_elf (mod, &mod->debug);
 }
 


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