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authorAnders Kaseorg <andersk@mit.edu>2008-12-05 19:03:58 -0500
committerRusty Russell <rusty@rustcorp.com.au>2009-03-31 13:05:32 +1030
commit75a66614db21007bcc8c37f9c5d5b922981387b9 (patch)
treed02c905a3aee02ec25ce38700f47d0fa57d2cbf7 /kernel/kallsyms.c
parenta6e6abd575fcbe6572ebc7a70ad616406d206fa8 (diff)
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Ksplice: Add functions for walking kallsyms symbols
Impact: New API kallsyms_lookup_name only returns the first match that it finds. Ksplice needs information about all symbols with a given name in order to correctly resolve local symbols. kallsyms_on_each_symbol provides a generic mechanism for iterating over the kallsyms table. Cc: Jeff Arnold <jbarnold@mit.edu> Cc: Tim Abbott <tabbott@mit.edu> Signed-off-by: Anders Kaseorg <andersk@mit.edu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'kernel/kallsyms.c')
-rw-r--r--kernel/kallsyms.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 7b8b0f21a5b1..374faf9bfdc7 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -161,6 +161,25 @@ unsigned long kallsyms_lookup_name(const char *name)
return module_kallsyms_lookup_name(name);
}
+int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *,
+ unsigned long),
+ void *data)
+{
+ char namebuf[KSYM_NAME_LEN];
+ unsigned long i;
+ unsigned int off;
+ int ret;
+
+ for (i = 0, off = 0; i < kallsyms_num_syms; i++) {
+ off = kallsyms_expand_symbol(off, namebuf);
+ ret = fn(data, namebuf, NULL, kallsyms_addresses[i]);
+ if (ret != 0)
+ return ret;
+ }
+ return module_kallsyms_on_each_symbol(fn, data);
+}
+EXPORT_SYMBOL_GPL(kallsyms_on_each_symbol);
+
static unsigned long get_symbol_pos(unsigned long addr,
unsigned long *symbolsize,
unsigned long *offset)