linux-kernel - [PATCH 2.6.27-rc1-git5 23/26] mdb: add kallsyms fixes for duplicate names

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Message-Id: <200808050626.m756QaCJ003783@wolfmountaingroup.com>
Date:	Tue, 5 Aug 2008 00:26:36 -0600
From:	jmerkey@...fmountaingroup.com
To:	linux-kernel@...r.kernel.org
Subject: [PATCH 2.6.27-rc1-git5 23/26] mdb: add kallsyms fixes for duplicate names

Centralized external definitions into include files and corrected 
the file to conform to Linux coding practices.  fixed word wrap
problems with patches.

add the ability to call through kallsyms and output strstr() matches
for name searches, since modules can have functions that share identical
names with the kernel functions.

Signed-off-by: Jeffrey Vernon Merkey (jmerkey@...fmountaingroup.com)

--- a/kernel/kallsyms.c	2008-08-04 15:53:44.000000000 -0600
+++ b/kernel/kallsyms.c	2008-08-04 15:49:51.000000000 -0600
@@ -477,5 +477,48 @@
 }
 __initcall(kallsyms_init);
 
+#ifdef CONFIG_MDB
+struct kallsym_iter mdb_iter;
+int mdb_kallsyms(char *str, int (*print)(char *s, ...))
+{
+    register loff_t pos = 0;
+    register struct kallsym_iter *iter = &mdb_iter;
+
+    if (!print)
+       return 0;
+
+    // set to beginning of the kallsyms list 
+    reset_iter(iter, 0);
+    while (1)
+    {
+       // search the kallsyms list
+       if (!update_iter(iter, pos++))
+          break;
+
+       if (!iter->name[0])
+ 	  continue;
+
+       // if an exclusion search was specified, skip non-matching entries
+       if (str && *str && !strstr(iter->name, str))
+          continue;
+
+       if (iter->module_name[0])
+       {
+          if (print("%0*lx %c %s [%s]\n", (int)(2*sizeof(void*)),
+	      iter->value, iter->type, iter->name,
+	      iter->module_name))
+             return 1;
+       }
+       else
+       {
+          if (print("%0*lx %c %s\n", (int)(2*sizeof(void*)),
+   	      iter->value, iter->type, iter->name))
+             return 1;
+       }
+    }
+    return 0;
+}
+#endif
+
 EXPORT_SYMBOL(__print_symbol);
 EXPORT_SYMBOL_GPL(sprint_symbol);
--
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