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USB: core: be specific about attribute permissions

Browse Source 
Instead of having to audit all sysfs attributes, to ensure we get them
right, use the default macros the driver core provides us (read-only,
read-write) to make the code simpler, and to prevent any mistakes from
ever happening.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2013-08-23 16:05:26 -07:00
parent 598d03610a
commit d03f254f2e
4 changed files with 166 additions and 197 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
drivers/usb/core/endpoint.c
View File

@ -32,31 +32,31 @@ struct ep_attribute {
container_of(_attr, struct ep_attribute, attr)
#define usb_ep_attr(field, format_string) \
static ssize_t show_ep_##field(struct device *dev, \
static ssize_t field##_show(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct ep_device *ep = to_ep_device(dev); \
return sprintf(buf, format_string, ep->desc->field); \
} \
static DEVICE_ATTR(field, S_IRUGO, show_ep_##field, NULL);
static DEVICE_ATTR_RO(field)
usb_ep_attr(bLength, "%02x\n")
usb_ep_attr(bEndpointAddress, "%02x\n")
usb_ep_attr(bmAttributes, "%02x\n")
usb_ep_attr(bInterval, "%02x\n")
usb_ep_attr(bLength, "%02x\n");
usb_ep_attr(bEndpointAddress, "%02x\n");
usb_ep_attr(bmAttributes, "%02x\n");
usb_ep_attr(bInterval, "%02x\n");
static ssize_t show_ep_wMaxPacketSize(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t wMaxPacketSize_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ep_device *ep = to_ep_device(dev);
return sprintf(buf, "%04x\n",
usb_endpoint_maxp(ep->desc) & 0x07ff);
}
static DEVICE_ATTR(wMaxPacketSize, S_IRUGO, show_ep_wMaxPacketSize, NULL);
static DEVICE_ATTR_RO(wMaxPacketSize);
static ssize_t show_ep_type(struct device *dev, struct device_attribute *attr,
char *buf)
static ssize_t type_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct ep_device *ep = to_ep_device(dev);
char *type = "unknown";
@ -77,10 +77,10 @@ static ssize_t show_ep_type(struct device *dev, struct device_attribute *attr,
}
return sprintf(buf, "%s\n", type);
}
static DEVICE_ATTR(type, S_IRUGO, show_ep_type, NULL);
static DEVICE_ATTR_RO(type);
static ssize_t show_ep_interval(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t interval_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct ep_device *ep = to_ep_device(dev);
char unit;
@ -123,10 +123,10 @@ static ssize_t show_ep_interval(struct device *dev,
return sprintf(buf, "%d%cs\n", interval, unit);
}
static DEVICE_ATTR(interval, S_IRUGO, show_ep_interval, NULL);
static DEVICE_ATTR_RO(interval);
static ssize_t show_ep_direction(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t direction_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct ep_device *ep = to_ep_device(dev);
char *direction;
@ -139,7 +139,7 @@ static ssize_t show_ep_direction(struct device *dev,
direction = "out";
return sprintf(buf, "%s\n", direction);
}
static DEVICE_ATTR(direction, S_IRUGO, show_ep_direction, NULL);
static DEVICE_ATTR_RO(direction);
static struct attribute *ep_dev_attrs[] = {
&dev_attr_bLength.attr,

17
drivers/usb/core/hcd.c
View File

@ -849,9 +849,8 @@ static int usb_rh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
/*
* Show & store the current value of authorized_default
*/
static ssize_t usb_host_authorized_default_show(struct device *dev,
struct device_attribute *attr,
char *buf)
static ssize_t authorized_default_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *rh_usb_dev = to_usb_device(dev);
struct usb_bus *usb_bus = rh_usb_dev->bus;
@ -863,9 +862,9 @@ static ssize_t usb_host_authorized_default_show(struct device *dev,
return snprintf(buf, PAGE_SIZE, "%u\n", usb_hcd->authorized_default);
}
static ssize_t usb_host_authorized_default_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
static ssize_t authorized_default_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
ssize_t result;
unsigned val;
@ -885,11 +884,7 @@ static ssize_t usb_host_authorized_default_store(struct device *dev,
result = -EINVAL;
return result;
}
static DEVICE_ATTR(authorized_default, 0644,
usb_host_authorized_default_show,
usb_host_authorized_default_store);
static DEVICE_ATTR_RW(authorized_default);
/* Group all the USB bus attributes */
static struct attribute *usb_bus_attrs[] = {

7
drivers/usb/core/port.c
View File

@ -23,8 +23,8 @@
static const struct attribute_group *port_dev_group[];
static ssize_t show_port_connect_type(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t connect_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_port *port_dev = to_usb_port(dev);
char *result;
@ -46,8 +46,7 @@ static ssize_t show_port_connect_type(struct device *dev,
return sprintf(buf, "%s\n", result);
}
static DEVICE_ATTR(connect_type, S_IRUGO, show_port_connect_type,
NULL);
static DEVICE_ATTR_RO(connect_type);
static struct attribute *port_dev_attrs[] = {
&dev_attr_connect_type.attr,

303
drivers/usb/core/sysfs.c
View File

@ -18,8 +18,8 @@
/* Active configuration fields */
#define usb_actconfig_show(field, format_string) \
static ssize_t show_##field(struct device *dev, \
struct device_attribute *attr, char *buf) \
static ssize_t field##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct usb_device *udev; \
struct usb_host_config *actconfig; \
@ -35,12 +35,12 @@ static ssize_t show_##field(struct device *dev, \
#define usb_actconfig_attr(field, format_string) \
usb_actconfig_show(field, format_string) \
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
static DEVICE_ATTR_RO(field)
usb_actconfig_attr(bNumInterfaces, "%2d\n")
usb_actconfig_attr(bmAttributes, "%2x\n")
usb_actconfig_attr(bNumInterfaces, "%2d\n");
usb_actconfig_attr(bmAttributes, "%2x\n");
static ssize_t show_bMaxPower(struct device *dev,
static ssize_t bMaxPower_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *udev;
@ -52,9 +52,9 @@ static ssize_t show_bMaxPower(struct device *dev,
return 0;
return sprintf(buf, "%dmA\n", usb_get_max_power(udev, actconfig));
}
static DEVICE_ATTR(bMaxPower, S_IRUGO, show_bMaxPower, NULL);
static DEVICE_ATTR_RO(bMaxPower);
static ssize_t show_configuration_string(struct device *dev,
static ssize_t configuration_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *udev;
@ -66,14 +66,14 @@ static ssize_t show_configuration_string(struct device *dev,
return 0;
return sprintf(buf, "%s\n", actconfig->string);
}
static DEVICE_ATTR(configuration, S_IRUGO, show_configuration_string, NULL);
static DEVICE_ATTR_RO(configuration);
/* configuration value is always present, and r/w */
usb_actconfig_show(bConfigurationValue, "%u\n");
static ssize_t
set_bConfigurationValue(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t bConfigurationValue_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
int config, value;
@ -85,13 +85,12 @@ set_bConfigurationValue(struct device *dev, struct device_attribute *attr,
usb_unlock_device(udev);
return (value < 0) ? value : count;
}
static DEVICE_ATTR_IGNORE_LOCKDEP(bConfigurationValue, S_IRUGO | S_IWUSR,
show_bConfigurationValue, set_bConfigurationValue);
bConfigurationValue_show, bConfigurationValue_store);
/* String fields */
#define usb_string_attr(name) \
static ssize_t show_##name(struct device *dev, \
static ssize_t name##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct usb_device *udev; \
@ -103,14 +102,14 @@ static ssize_t show_##name(struct device *dev, \
usb_unlock_device(udev); \
return retval; \
} \
static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
static DEVICE_ATTR_RO(name)
usb_string_attr(product);
usb_string_attr(manufacturer);
usb_string_attr(serial);
static ssize_t
show_speed(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t speed_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev;
char *speed;
@ -139,40 +138,40 @@ show_speed(struct device *dev, struct device_attribute *attr, char *buf)
}
return sprintf(buf, "%s\n", speed);
}
static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);
static DEVICE_ATTR_RO(speed);
static ssize_t
show_busnum(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t busnum_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev;
udev = to_usb_device(dev);
return sprintf(buf, "%d\n", udev->bus->busnum);
}
static DEVICE_ATTR(busnum, S_IRUGO, show_busnum, NULL);
static DEVICE_ATTR_RO(busnum);
static ssize_t
show_devnum(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t devnum_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev;
udev = to_usb_device(dev);
return sprintf(buf, "%d\n", udev->devnum);
}
static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL);
static DEVICE_ATTR_RO(devnum);
static ssize_t
show_devpath(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t devpath_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev;
udev = to_usb_device(dev);
return sprintf(buf, "%s\n", udev->devpath);
}
static DEVICE_ATTR(devpath, S_IRUGO, show_devpath, NULL);
static DEVICE_ATTR_RO(devpath);
static ssize_t
show_version(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t version_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev;
u16 bcdUSB;
@ -181,30 +180,30 @@ show_version(struct device *dev, struct device_attribute *attr, char *buf)
bcdUSB = le16_to_cpu(udev->descriptor.bcdUSB);
return sprintf(buf, "%2x.%02x\n", bcdUSB >> 8, bcdUSB & 0xff);
}
static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
static DEVICE_ATTR_RO(version);
static ssize_t
show_maxchild(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t maxchild_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev;
udev = to_usb_device(dev);
return sprintf(buf, "%d\n", udev->maxchild);
}
static DEVICE_ATTR(maxchild, S_IRUGO, show_maxchild, NULL);
static DEVICE_ATTR_RO(maxchild);
static ssize_t
show_quirks(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t quirks_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev;
udev = to_usb_device(dev);
return sprintf(buf, "0x%x\n", udev->quirks);
}
static DEVICE_ATTR(quirks, S_IRUGO, show_quirks, NULL);
static DEVICE_ATTR_RO(quirks);
static ssize_t
show_avoid_reset_quirk(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t avoid_reset_quirk_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *udev;
@ -212,9 +211,9 @@ show_avoid_reset_quirk(struct device *dev, struct device_attribute *attr, char *
return sprintf(buf, "%d\n", !!(udev->quirks & USB_QUIRK_RESET));
}
static ssize_t
set_avoid_reset_quirk(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t avoid_reset_quirk_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
int val;
@ -229,22 +228,20 @@ set_avoid_reset_quirk(struct device *dev, struct device_attribute *attr,
usb_unlock_device(udev);
return count;
}
static DEVICE_ATTR_RW(avoid_reset_quirk);
static DEVICE_ATTR(avoid_reset_quirk, S_IRUGO | S_IWUSR,
show_avoid_reset_quirk, set_avoid_reset_quirk);
static ssize_t
show_urbnum(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t urbnum_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev;
udev = to_usb_device(dev);
return sprintf(buf, "%d\n", atomic_read(&udev->urbnum));
}
static DEVICE_ATTR(urbnum, S_IRUGO, show_urbnum, NULL);
static DEVICE_ATTR_RO(urbnum);
static ssize_t
show_removable(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t removable_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev;
char *state;
@ -264,30 +261,29 @@ show_removable(struct device *dev, struct device_attribute *attr, char *buf)
return sprintf(buf, "%s\n", state);
}
static DEVICE_ATTR(removable, S_IRUGO, show_removable, NULL);
static DEVICE_ATTR_RO(removable);
static ssize_t
show_ltm_capable(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t ltm_capable_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (usb_device_supports_ltm(to_usb_device(dev)))
return sprintf(buf, "%s\n", "yes");
return sprintf(buf, "%s\n", "no");
}
static DEVICE_ATTR(ltm_capable, S_IRUGO, show_ltm_capable, NULL);
static DEVICE_ATTR_RO(ltm_capable);
#ifdef CONFIG_PM
static ssize_t
show_persist(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t persist_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev = to_usb_device(dev);
return sprintf(buf, "%d\n", udev->persist_enabled);
}
static ssize_t
set_persist(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t persist_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
int value;
@ -304,8 +300,7 @@ set_persist(struct device *dev, struct device_attribute *attr,
usb_unlock_device(udev);
return count;
}
static DEVICE_ATTR(persist, S_IRUGO | S_IWUSR, show_persist, set_persist);
static DEVICE_ATTR_RW(persist);
static int add_persist_attributes(struct device *dev)
{
@ -340,17 +335,15 @@ static void remove_persist_attributes(struct device *dev)
#ifdef CONFIG_PM_RUNTIME
static ssize_t
show_connected_duration(struct device *dev, struct device_attribute *attr,
char *buf)
static ssize_t connected_duration_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *udev = to_usb_device(dev);
return sprintf(buf, "%u\n",
jiffies_to_msecs(jiffies - udev->connect_time));
}
static DEVICE_ATTR(connected_duration, S_IRUGO, show_connected_duration, NULL);
static DEVICE_ATTR_RO(connected_duration);
/*
* If the device is resumed, the last time the device was suspended has
@ -359,9 +352,8 @@ static DEVICE_ATTR(connected_duration, S_IRUGO, show_connected_duration, NULL);
*
* If the device is suspended, the active_duration is up-to-date.
*/
static ssize_t
show_active_duration(struct device *dev, struct device_attribute *attr,
char *buf)
static ssize_t active_duration_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *udev = to_usb_device(dev);
int duration;
@ -372,18 +364,17 @@ show_active_duration(struct device *dev, struct device_attribute *attr,
duration = jiffies_to_msecs(udev->active_duration);
return sprintf(buf, "%u\n", duration);
}
static DEVICE_ATTR_RO(active_duration);
static DEVICE_ATTR(active_duration, S_IRUGO, show_active_duration, NULL);
static ssize_t
show_autosuspend(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t autosuspend_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", dev->power.autosuspend_delay / 1000);
}
static ssize_t
set_autosuspend(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t autosuspend_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
int value;
@ -394,9 +385,7 @@ set_autosuspend(struct device *dev, struct device_attribute *attr,
pm_runtime_set_autosuspend_delay(dev, value * 1000);
return count;
}
static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR,
show_autosuspend, set_autosuspend);
static DEVICE_ATTR_RW(autosuspend);
static const char on_string[] = "on";
static const char auto_string[] = "auto";
@ -411,8 +400,8 @@ static void warn_level(void) {
}
}
static ssize_t
show_level(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t level_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_device *udev = to_usb_device(dev);
const char *p = auto_string;
@ -423,9 +412,8 @@ show_level(struct device *dev, struct device_attribute *attr, char *buf)
return sprintf(buf, "%s\n", p);
}
static ssize_t
set_level(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t level_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
int len = count;
@ -453,12 +441,10 @@ set_level(struct device *dev, struct device_attribute *attr,
usb_unlock_device(udev);
return rc;
}
static DEVICE_ATTR_RW(level);
static DEVICE_ATTR(level, S_IRUGO | S_IWUSR, show_level, set_level);
static ssize_t
show_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr,
char *buf)
static ssize_t usb2_hardware_lpm_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *udev = to_usb_device(dev);
const char *p;
@ -471,9 +457,9 @@ show_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "%s\n", p);
}
static ssize_t
set_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t usb2_hardware_lpm_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
bool value;
@ -493,21 +479,19 @@ set_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr,
return ret;
}
static DEVICE_ATTR_RW(usb2_hardware_lpm);
static DEVICE_ATTR(usb2_hardware_lpm, S_IRUGO | S_IWUSR, show_usb2_hardware_lpm,
set_usb2_hardware_lpm);
static ssize_t
show_usb2_lpm_l1_timeout(struct device *dev, struct device_attribute *attr,
char *buf)
static ssize_t usb2_lpm_l1_timeout_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct usb_device *udev = to_usb_device(dev);
return sprintf(buf, "%d\n", udev->l1_params.timeout);
}
static ssize_t
set_usb2_lpm_l1_timeout(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t usb2_lpm_l1_timeout_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
u16 timeout;
@ -519,21 +503,18 @@ set_usb2_lpm_l1_timeout(struct device *dev, struct device_attribute *attr,
return count;
}
static DEVICE_ATTR_RW(usb2_lpm_l1_timeout);
static DEVICE_ATTR(usb2_lpm_l1_timeout, S_IRUGO | S_IWUSR,
show_usb2_lpm_l1_timeout, set_usb2_lpm_l1_timeout);
static ssize_t
show_usb2_lpm_besl(struct device *dev, struct device_attribute *attr,
char *buf)
static ssize_t usb2_lpm_besl_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *udev = to_usb_device(dev);
return sprintf(buf, "%d\n", udev->l1_params.besl);
}
static ssize_t
set_usb2_lpm_besl(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t usb2_lpm_besl_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
u8 besl;
@ -545,9 +526,7 @@ set_usb2_lpm_besl(struct device *dev, struct device_attribute *attr,
return count;
}
static DEVICE_ATTR(usb2_lpm_besl, S_IRUGO | S_IWUSR,
show_usb2_lpm_besl, set_usb2_lpm_besl);
static DEVICE_ATTR_RW(usb2_lpm_besl);
static struct attribute *usb2_hardware_lpm_attr[] = {
&dev_attr_usb2_hardware_lpm.attr,
@ -604,7 +583,7 @@ static void remove_power_attributes(struct device *dev)
/* Descriptor fields */
#define usb_descriptor_attr_le16(field, format_string) \
static ssize_t \
show_##field(struct device *dev, struct device_attribute *attr, \
field##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct usb_device *udev; \
@ -613,15 +592,15 @@ show_##field(struct device *dev, struct device_attribute *attr, \
return sprintf(buf, format_string, \
le16_to_cpu(udev->descriptor.field)); \
} \
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
static DEVICE_ATTR_RO(field)
usb_descriptor_attr_le16(idVendor, "%04x\n")
usb_descriptor_attr_le16(idProduct, "%04x\n")
usb_descriptor_attr_le16(bcdDevice, "%04x\n")
usb_descriptor_attr_le16(idVendor, "%04x\n");
usb_descriptor_attr_le16(idProduct, "%04x\n");
usb_descriptor_attr_le16(bcdDevice, "%04x\n");
#define usb_descriptor_attr(field, format_string) \
static ssize_t \
show_##field(struct device *dev, struct device_attribute *attr, \
field##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct usb_device *udev; \
@ -629,34 +608,31 @@ show_##field(struct device *dev, struct device_attribute *attr, \
udev = to_usb_device(dev); \
return sprintf(buf, format_string, udev->descriptor.field); \
} \
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
usb_descriptor_attr(bDeviceClass, "%02x\n")
usb_descriptor_attr(bDeviceSubClass, "%02x\n")
usb_descriptor_attr(bDeviceProtocol, "%02x\n")
usb_descriptor_attr(bNumConfigurations, "%d\n")
usb_descriptor_attr(bMaxPacketSize0, "%d\n")
static DEVICE_ATTR_RO(field)
usb_descriptor_attr(bDeviceClass, "%02x\n");
usb_descriptor_attr(bDeviceSubClass, "%02x\n");
usb_descriptor_attr(bDeviceProtocol, "%02x\n");
usb_descriptor_attr(bNumConfigurations, "%d\n");
usb_descriptor_attr(bMaxPacketSize0, "%d\n");
/* show if the device is authorized (1) or not (0) */
static ssize_t usb_dev_authorized_show(struct device *dev,
struct device_attribute *attr,
char *buf)
static ssize_t authorized_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *usb_dev = to_usb_device(dev);
return snprintf(buf, PAGE_SIZE, "%u\n", usb_dev->authorized);
}
/*
* Authorize a device to be used in the system
*
* Writing a 0 deauthorizes the device, writing a 1 authorizes it.
*/
static ssize_t usb_dev_authorized_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
static ssize_t authorized_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t size)
{
ssize_t result;
struct usb_device *usb_dev = to_usb_device(dev);
@ -670,14 +646,12 @@ static ssize_t usb_dev_authorized_store(struct device *dev,
result = usb_authorize_device(usb_dev);
return result < 0? result : size;
}
static DEVICE_ATTR_IGNORE_LOCKDEP(authorized, 0644,
usb_dev_authorized_show, usb_dev_authorized_store);
static DEVICE_ATTR_IGNORE_LOCKDEP(authorized, S_IRUGO | S_IWUSR,
authorized_show, authorized_store);
/* "Safely remove a device" */
static ssize_t usb_remove_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t remove_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_device *udev = to_usb_device(dev);
int rc = 0;
@ -694,7 +668,7 @@ static ssize_t usb_remove_store(struct device *dev,
usb_unlock_device(udev);
return rc;
}
static DEVICE_ATTR_IGNORE_LOCKDEP(remove, 0200, NULL, usb_remove_store);
static DEVICE_ATTR_IGNORE_LOCKDEP(remove, S_IWUSR, NULL, remove_store);
static struct attribute *dev_attrs[] = {
@ -853,7 +827,7 @@ void usb_remove_sysfs_dev_files(struct usb_device *udev)
/* Interface Accociation Descriptor fields */
#define usb_intf_assoc_attr(field, format_string) \
static ssize_t \
show_iad_##field(struct device *dev, struct device_attribute *attr, \
iad_##field##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
@ -861,18 +835,18 @@ show_iad_##field(struct device *dev, struct device_attribute *attr, \
return sprintf(buf, format_string, \
intf->intf_assoc->field); \
} \
static DEVICE_ATTR(iad_##field, S_IRUGO, show_iad_##field, NULL);
static DEVICE_ATTR_RO(iad_##field)
usb_intf_assoc_attr(bFirstInterface, "%02x\n")
usb_intf_assoc_attr(bInterfaceCount, "%02d\n")
usb_intf_assoc_attr(bFunctionClass, "%02x\n")
usb_intf_assoc_attr(bFunctionSubClass, "%02x\n")
usb_intf_assoc_attr(bFunctionProtocol, "%02x\n")
usb_intf_assoc_attr(bFirstInterface, "%02x\n");
usb_intf_assoc_attr(bInterfaceCount, "%02d\n");
usb_intf_assoc_attr(bFunctionClass, "%02x\n");
usb_intf_assoc_attr(bFunctionSubClass, "%02x\n");
usb_intf_assoc_attr(bFunctionProtocol, "%02x\n");
/* Interface fields */
#define usb_intf_attr(field, format_string) \
static ssize_t \
show_##field(struct device *dev, struct device_attribute *attr, \
field##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
@ -880,17 +854,17 @@ show_##field(struct device *dev, struct device_attribute *attr, \
return sprintf(buf, format_string, \
intf->cur_altsetting->desc.field); \
} \
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
static DEVICE_ATTR_RO(field)
usb_intf_attr(bInterfaceNumber, "%02x\n")
usb_intf_attr(bAlternateSetting, "%2d\n")
usb_intf_attr(bNumEndpoints, "%02x\n")
usb_intf_attr(bInterfaceClass, "%02x\n")
usb_intf_attr(bInterfaceSubClass, "%02x\n")
usb_intf_attr(bInterfaceProtocol, "%02x\n")
usb_intf_attr(bInterfaceNumber, "%02x\n");
usb_intf_attr(bAlternateSetting, "%2d\n");
usb_intf_attr(bNumEndpoints, "%02x\n");
usb_intf_attr(bInterfaceClass, "%02x\n");
usb_intf_attr(bInterfaceSubClass, "%02x\n");
usb_intf_attr(bInterfaceProtocol, "%02x\n");
static ssize_t show_interface_string(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t interface_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_interface *intf;
char *string;
@ -903,10 +877,10 @@ static ssize_t show_interface_string(struct device *dev,
return 0;
return sprintf(buf, "%s\n", string);
}
static DEVICE_ATTR(interface, S_IRUGO, show_interface_string, NULL);
static DEVICE_ATTR_RO(interface);
static ssize_t show_modalias(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct usb_interface *intf;
struct usb_device *udev;
@ -929,10 +903,11 @@ static ssize_t show_modalias(struct device *dev,
alt->desc.bInterfaceProtocol,
alt->desc.bInterfaceNumber);
}
static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL);
static DEVICE_ATTR_RO(modalias);
static ssize_t show_supports_autosuspend(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t supports_autosuspend_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct usb_interface *intf;
struct usb_device *udev;
@ -952,7 +927,7 @@ static ssize_t show_supports_autosuspend(struct device *dev,
return ret;
}
static DEVICE_ATTR(supports_autosuspend, S_IRUGO, show_supports_autosuspend, NULL);
static DEVICE_ATTR_RO(supports_autosuspend);
static struct attribute *intf_attrs[] = {
&dev_attr_bInterfaceNumber.attr,