staging: usbip: userspace: migrate usbip_host_driver to libudev
This patch modifies usbip_host_driver to use libudev.
Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com>
Reviewed-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_common.c b/drivers/staging/usbip/userspace/libsrc/usbip_common.c
index 6620d18..998c11c 100644
--- a/drivers/staging/usbip/userspace/libsrc/usbip_common.c
+++ b/drivers/staging/usbip/userspace/libsrc/usbip_common.c
@@ -2,6 +2,7 @@
* Copyright (C) 2005-2007 Takahiro Hirofuchi
*/
+#include <libudev.h>
#include "usbip_common.h"
#include "names.h"
@@ -12,6 +13,8 @@
int usbip_use_stderr;
int usbip_use_debug;
+extern struct udev *udev_context;
+
struct speed_string {
int num;
char *speed;
@@ -111,75 +114,48 @@
}
-int read_attr_value(struct sysfs_device *dev, const char *name,
+int read_attr_value(struct udev_device *dev, const char *name,
const char *format)
{
- char attrpath[SYSFS_PATH_MAX];
- struct sysfs_attribute *attr;
+ const char *attr;
int num = 0;
int ret;
- snprintf(attrpath, sizeof(attrpath), "%s/%s", dev->path, name);
-
- attr = sysfs_open_attribute(attrpath);
+ attr = udev_device_get_sysattr_value(dev, name);
if (!attr) {
- dbg("sysfs_open_attribute failed: %s", attrpath);
- return 0;
- }
-
- ret = sysfs_read_attribute(attr);
- if (ret < 0) {
- dbg("sysfs_read_attribute failed");
+ err("udev_device_get_sysattr_value failed");
goto err;
}
- ret = sscanf(attr->value, format, &num);
+ ret = sscanf(attr, format, &num);
if (ret < 1) {
- dbg("sscanf failed");
+ err("sscanf failed");
goto err;
}
err:
- sysfs_close_attribute(attr);
return num;
}
-int read_attr_speed(struct sysfs_device *dev)
+int read_attr_speed(struct udev_device *dev)
{
- char attrpath[SYSFS_PATH_MAX];
- struct sysfs_attribute *attr;
- char speed[100];
- int ret;
+ const char *speed;
- snprintf(attrpath, sizeof(attrpath), "%s/%s", dev->path, "speed");
-
- attr = sysfs_open_attribute(attrpath);
- if (!attr) {
- dbg("sysfs_open_attribute failed: %s", attrpath);
- return 0;
- }
-
- ret = sysfs_read_attribute(attr);
- if (ret < 0) {
- dbg("sysfs_read_attribute failed");
+ speed = udev_device_get_sysattr_value(dev, "speed");
+ if (!speed) {
+ err("udev_device_get_sysattr_value failed");
goto err;
}
- ret = sscanf(attr->value, "%99s\n", speed);
- if (ret < 1) {
- dbg("sscanf failed");
- goto err;
- }
-err:
- sysfs_close_attribute(attr);
-
for (int i = 0; speed_strings[i].speed != NULL; i++) {
if (!strcmp(speed, speed_strings[i].speed))
return speed_strings[i].num;
}
+err:
+
return USB_SPEED_UNKNOWN;
}
@@ -190,9 +166,10 @@
} while (0)
-int read_usb_device(struct sysfs_device *sdev, struct usbip_usb_device *udev)
+int read_usb_device(struct udev_device *sdev, struct usbip_usb_device *udev)
{
uint32_t busnum, devnum;
+ const char *path, *name;
READ_ATTR(udev, uint8_t, sdev, bDeviceClass, "%02x\n");
READ_ATTR(udev, uint8_t, sdev, bDeviceSubClass, "%02x\n");
@@ -209,10 +186,13 @@
READ_ATTR(udev, uint8_t, sdev, devnum, "%d\n");
udev->speed = read_attr_speed(sdev);
- strncpy(udev->path, sdev->path, SYSFS_PATH_MAX);
- strncpy(udev->busid, sdev->name, SYSFS_BUS_ID_SIZE);
+ path = udev_device_get_syspath(sdev);
+ name = udev_device_get_sysname(sdev);
- sscanf(sdev->name, "%u-%u", &busnum, &devnum);
+ strncpy(udev->path, path, SYSFS_PATH_MAX);
+ strncpy(udev->busid, name, SYSFS_BUS_ID_SIZE);
+
+ sscanf(name, "%u-%u", &busnum, &devnum);
udev->busnum = busnum;
return 0;
@@ -222,13 +202,13 @@
struct usbip_usb_interface *uinf)
{
char busid[SYSFS_BUS_ID_SIZE];
- struct sysfs_device *sif;
+ struct udev_device *sif;
sprintf(busid, "%s:%d.%d", udev->busid, udev->bConfigurationValue, i);
- sif = sysfs_open_device("usb", busid);
+ sif = udev_device_new_from_subsystem_sysname(udev_context, "usb", busid);
if (!sif) {
- dbg("sysfs_open_device(\"usb\", \"%s\") failed", busid);
+ err("udev_device_new_from_subsystem_sysname %s failed", busid);
return -1;
}
@@ -236,8 +216,6 @@
READ_ATTR(uinf, uint8_t, sif, bInterfaceSubClass, "%02x\n");
READ_ATTR(uinf, uint8_t, sif, bInterfaceProtocol, "%02x\n");
- sysfs_close_device(sif);
-
return 0;
}