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Commit e4dca7b7 authored by Kees Cook's avatar Kees Cook Committed by Jessica Yu
Browse files

treewide: Fix function prototypes for module_param_call() 



Several function prototypes for the set/get functions defined by
module_param_call() have a slightly wrong argument types. This fixes
those in an effort to clean up the calls when running under type-enforced
compiler instrumentation for CFI. This is the result of running the
following semantic patch:

@match_module_param_call_function@
declarer name module_param_call;
identifier _name, _set_func, _get_func;
expression _arg, _mode;
@@

 module_param_call(_name, _set_func, _get_func, _arg, _mode);

@fix_set_prototype
 depends on match_module_param_call_function@
identifier match_module_param_call_function._set_func;
identifier _val, _param;
type _val_type, _param_type;
@@

 int _set_func(
-_val_type _val
+const char * _val
 ,
-_param_type _param
+const struct kernel_param * _param
 ) { ... }

@fix_get_prototype
 depends on match_module_param_call_function@
identifier match_module_param_call_function._get_func;
identifier _val, _param;
type _val_type, _param_type;
@@

 int _get_func(
-_val_type _val
+char * _val
 ,
-_param_type _param
+const struct kernel_param * _param
 ) { ... }

Two additional by-hand changes are included for places where the above
Coccinelle script didn't notice them:

	drivers/platform/x86/thinkpad_acpi.c
	fs/lockd/svc.c

Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Signed-off-by: default avatarJessica Yu <jeyu@kernel.org>
parent b2f270e8

arch/powerpc/platforms/pseries/cmm.c

+1 −1
Original line number Diff line number Diff line
@@ -742,7 +742,7 @@ static void cmm_exit(void) 
 * Return value:

 * 	0 on success / other on failure

 **/

static int cmm_set_disable(const char *val, struct kernel_param *kp)

static int cmm_set_disable(const char *val, const struct kernel_param *kp)

{

	int disable = simple_strtoul(val, NULL, 10);

arch/x86/oprofile/nmi_int.c

+1 −1
Original line number Diff line number Diff line
@@ -592,7 +592,7 @@ enum __force_cpu_type { 


static int force_cpu_type;



static int set_cpu_type(const char *str, struct kernel_param *kp)

static int set_cpu_type(const char *str, const struct kernel_param *kp)

{

	if (!strcmp(str, "timer")) {

		force_cpu_type = timer;

drivers/acpi/button.c

+4 −2
Original line number Diff line number Diff line
@@ -557,7 +557,8 @@ static int acpi_button_remove(struct acpi_device *device) 
	return 0;

}



static int param_set_lid_init_state(const char *val, struct kernel_param *kp)

static int param_set_lid_init_state(const char *val,

				    const struct kernel_param *kp)

{

	int result = 0;
@@ -575,7 +576,8 @@ static int param_set_lid_init_state(const char *val, struct kernel_param *kp) 
	return result;

}



static int param_get_lid_init_state(char *buffer, struct kernel_param *kp)

static int param_get_lid_init_state(char *buffer,

				    const struct kernel_param *kp)

{

	switch (lid_init_state) {

	case ACPI_BUTTON_LID_INIT_OPEN:

drivers/acpi/ec.c

+4 −2
Original line number Diff line number Diff line
@@ -1939,7 +1939,8 @@ static const struct dev_pm_ops acpi_ec_pm = { 
	SET_SYSTEM_SLEEP_PM_OPS(acpi_ec_suspend, acpi_ec_resume)

};



static int param_set_event_clearing(const char *val, struct kernel_param *kp)

static int param_set_event_clearing(const char *val,

				    const struct kernel_param *kp)

{

	int result = 0;
@@ -1957,7 +1958,8 @@ static int param_set_event_clearing(const char *val, struct kernel_param *kp) 
	return result;

}



static int param_get_event_clearing(char *buffer, struct kernel_param *kp)

static int param_get_event_clearing(char *buffer,

				    const struct kernel_param *kp)

{

	switch (ec_event_clearing) {

	case ACPI_EC_EVT_TIMING_STATUS:

drivers/acpi/sysfs.c

+5 −3
Original line number Diff line number Diff line
@@ -229,7 +229,8 @@ module_param_cb(trace_method_name, &param_ops_trace_method, &trace_method_name, 
module_param_cb(trace_debug_layer, &param_ops_trace_attrib, &acpi_gbl_trace_dbg_layer, 0644);

module_param_cb(trace_debug_level, &param_ops_trace_attrib, &acpi_gbl_trace_dbg_level, 0644);



static int param_set_trace_state(const char *val, struct kernel_param *kp)

static int param_set_trace_state(const char *val,

				 const struct kernel_param *kp)

{

	acpi_status status;

	const char *method = trace_method_name;
@@ -265,7 +266,7 @@ static int param_set_trace_state(const char *val, struct kernel_param *kp) 
	return 0;

}



static int param_get_trace_state(char *buffer, struct kernel_param *kp)

static int param_get_trace_state(char *buffer, const struct kernel_param *kp)

{

	if (!(acpi_gbl_trace_flags & ACPI_TRACE_ENABLED))

		return sprintf(buffer, "disable");
@@ -294,7 +295,8 @@ MODULE_PARM_DESC(aml_debug_output, 
		 "To enable/disable the ACPI Debug Object output.");



/* /sys/module/acpi/parameters/acpica_version */

static int param_get_acpica_version(char *buffer, struct kernel_param *kp)

static int param_get_acpica_version(char *buffer,

				    const struct kernel_param *kp)

{

	int result;