Simplify module_get_kallsym() by dropping length arg
module_get_kallsym() could in theory truncate module symbol name to fit in
buffer, but nobody does this. Always use KSYM_NAME_LEN + 1 bytes for name.
Suggested by lg^WRusty.
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/module.h b/include/linux/module.h
index f0b0faf..7999302 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -373,7 +373,7 @@
/* Returns module and fills in value, defined and namebuf, or NULL if
symnum out of range. */
struct module *module_get_kallsym(unsigned int symnum, unsigned long *value,
- char *type, char *name, size_t namelen);
+ char *type, char *name);
/* Look for this name: can be of form module:name. */
unsigned long module_kallsyms_lookup_name(const char *name);
@@ -529,8 +529,7 @@
static inline struct module *module_get_kallsym(unsigned int symnum,
unsigned long *value,
- char *type, char *name,
- size_t namelen)
+ char *type, char *name)
{
return NULL;
}
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 5a0de84..d086c91 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -312,7 +312,7 @@
{
iter->owner = module_get_kallsym(iter->pos - kallsyms_num_syms,
&iter->value, &iter->type,
- iter->name, sizeof(iter->name));
+ iter->name);
if (iter->owner == NULL)
return 0;
diff --git a/kernel/module.c b/kernel/module.c
index 9bdbd12..43a529a 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -19,6 +19,7 @@
#include <linux/module.h>
#include <linux/moduleloader.h>
#include <linux/init.h>
+#include <linux/kallsyms.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
@@ -2124,7 +2125,7 @@
}
struct module *module_get_kallsym(unsigned int symnum, unsigned long *value,
- char *type, char *name, size_t namelen)
+ char *type, char *name)
{
struct module *mod;
@@ -2134,7 +2135,7 @@
*value = mod->symtab[symnum].st_value;
*type = mod->symtab[symnum].st_info;
strlcpy(name, mod->strtab + mod->symtab[symnum].st_name,
- namelen);
+ KSYM_NAME_LEN + 1);
mutex_unlock(&module_mutex);
return mod;
}