* Copyright (C) 2005-2007 Takahiro Hirofuchi
*/
+#include <libudev.h>
#include "usbip_common.h"
#include "names.h"
int usbip_use_stderr;
int usbip_use_debug;
+extern struct udev *udev_context;
+
struct speed_string {
int num;
char *speed;
}
-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;
-
- 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;
- }
+ const char *speed;
- 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;
}
} 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");
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;
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;
}
READ_ATTR(uinf, uint8_t, sif, bInterfaceSubClass, "%02x\n");
READ_ATTR(uinf, uint8_t, sif, bInterfaceProtocol, "%02x\n");
- sysfs_close_device(sif);
-
return 0;
}
#include <sys/types.h>
#include <sys/stat.h>
+#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
+#include <libudev.h>
+
#include "usbip_common.h"
#include "usbip_host_driver.h"
+#include "list.h"
+#include "sysfs_utils.h"
#undef PROGNAME
#define PROGNAME "libusbip"
struct usbip_host_driver *host_driver;
-
-#define SYSFS_OPEN_RETRIES 100
+struct udev *udev_context;
static int32_t read_attr_usbip_status(struct usbip_usb_device *udev)
{
- char attrpath[SYSFS_PATH_MAX];
- struct sysfs_attribute *attr;
+ char status_attr_path[SYSFS_PATH_MAX];
+ int fd;
+ int length;
+ char status;
int value = 0;
- int rc;
- struct stat s;
- int retries = SYSFS_OPEN_RETRIES;
-
- /* This access is racy!
- *
- * Just after detach, our driver removes the sysfs
- * files and recreates them.
- *
- * We may try and fail to open the usbip_status of
- * an exported device in the (short) window where
- * it has been removed and not yet recreated.
- *
- * This is a bug in the interface. Nothing we can do
- * except work around it here by polling for the sysfs
- * usbip_status to reappear.
- */
-
- snprintf(attrpath, SYSFS_PATH_MAX, "%s/usbip_status",
- udev->path);
-
- while (retries > 0) {
- if (stat(attrpath, &s) == 0)
- break;
-
- if (errno != ENOENT) {
- dbg("stat failed: %s", attrpath);
- return -1;
- }
-
- usleep(10000); /* 10ms */
- retries--;
- }
- if (retries == 0)
- dbg("usbip_status not ready after %d retries",
- SYSFS_OPEN_RETRIES);
- else if (retries < SYSFS_OPEN_RETRIES)
- dbg("warning: usbip_status ready after %d retries",
- SYSFS_OPEN_RETRIES - retries);
+ snprintf(status_attr_path, SYSFS_PATH_MAX, "%s/usbip_status",
+ udev->path);
- attr = sysfs_open_attribute(attrpath);
- if (!attr) {
- dbg("sysfs_open_attribute failed: %s", attrpath);
+ if ((fd = open(status_attr_path, O_RDONLY)) < 0) {
+ err("error opening attribute %s", status_attr_path);
return -1;
}
- rc = sysfs_read_attribute(attr);
- if (rc) {
- dbg("sysfs_read_attribute failed: %s", attrpath);
- sysfs_close_attribute(attr);
+ length = read(fd, &status, 1);
+ if (length < 0) {
+ err("error reading attribute %s", status_attr_path);
+ close(fd);
return -1;
}
- value = atoi(attr->value);
-
- sysfs_close_attribute(attr);
+ value = atoi(&status);
return value;
}
-static struct usbip_exported_device *usbip_exported_device_new(char *sdevpath)
+static
+struct usbip_exported_device *usbip_exported_device_new(const char *sdevpath)
{
struct usbip_exported_device *edev = NULL;
struct usbip_exported_device *edev_old;
size_t size;
int i;
- edev = calloc(1, sizeof(*edev));
- if (!edev) {
- dbg("calloc failed");
- return NULL;
- }
+ edev = calloc(1, sizeof(struct usbip_exported_device));
- edev->sudev = sysfs_open_device_path(sdevpath);
+ edev->sudev = udev_device_new_from_syspath(udev_context, sdevpath);
if (!edev->sudev) {
- dbg("sysfs_open_device_path failed: %s", sdevpath);
+ err("udev_device_new_from_syspath: %s", sdevpath);
goto err;
}
goto err;
/* reallocate buffer to include usb interface data */
- size = sizeof(*edev) + edev->udev.bNumInterfaces *
+ size = sizeof(struct usbip_exported_device) + edev->udev.bNumInterfaces *
sizeof(struct usbip_usb_interface);
edev_old = edev;
return edev;
err:
- if (edev && edev->sudev)
- sysfs_close_device(edev->sudev);
+ if (edev->sudev)
+ udev_device_unref(edev->sudev);
if (edev)
free(edev);
return NULL;
}
-static int check_new(struct dlist *dlist, struct sysfs_device *target)
-{
- struct sysfs_device *dev;
-
- dlist_for_each_data(dlist, dev, struct sysfs_device) {
- if (!strncmp(dev->bus_id, target->bus_id, SYSFS_BUS_ID_SIZE))
- /* device found and is not new */
- return 0;
- }
- return 1;
-}
-
-static void delete_nothing(void *unused_data)
-{
- /*
- * NOTE: Do not delete anything, but the container will be deleted.
- */
- (void) unused_data;
-}
-
static int refresh_exported_devices(void)
{
- /* sysfs_device of usb_device */
- struct sysfs_device *sudev;
- struct dlist *sudev_list;
- struct dlist *sudev_unique_list;
struct usbip_exported_device *edev;
-
- sudev_unique_list = dlist_new_with_delete(sizeof(struct sysfs_device),
- delete_nothing);
-
- sudev_list = sysfs_get_driver_devices(host_driver->sysfs_driver);
-
- if (!sudev_list) {
- /*
- * Not an error condition. There are simply no devices bound to
- * the driver yet.
- */
- dbg("bind " USBIP_HOST_DRV_NAME ".ko to a usb device to be "
- "exportable!");
- return 0;
- }
-
- dlist_for_each_data(sudev_list, sudev, struct sysfs_device)
- if (check_new(sudev_unique_list, sudev))
- dlist_unshift(sudev_unique_list, sudev);
-
- dlist_for_each_data(sudev_unique_list, sudev, struct sysfs_device) {
- edev = usbip_exported_device_new(sudev->path);
-
- if (!edev) {
- dbg("usbip_exported_device_new failed");
- continue;
+ struct udev_enumerate *enumerate;
+ struct udev_list_entry *devices, *dev_list_entry;
+ struct udev_device *dev;
+ const char *path;
+
+ enumerate = udev_enumerate_new(udev_context);
+ udev_enumerate_add_match_subsystem(enumerate, "usb");
+ udev_enumerate_scan_devices(enumerate);
+
+ devices = udev_enumerate_get_list_entry(enumerate);
+
+ udev_list_entry_foreach(dev_list_entry, devices) {
+ path = udev_list_entry_get_name(dev_list_entry);
+ dev = udev_device_new_from_syspath(udev_context, path);
+
+ /* Check whether device uses usbip-host driver. */
+ if (!strcmp(udev_device_get_driver(dev),
+ USBIP_HOST_DRV_NAME)) {
+ edev = usbip_exported_device_new(path);
+ if (!edev) {
+ dbg("usbip_exported_device_new failed");
+ continue;
+ }
+
+ list_add(&edev->node, &host_driver->edev_list);
+ host_driver->ndevs++;
}
-
- dlist_unshift(host_driver->edev_list, edev);
- host_driver->ndevs++;
}
- dlist_destroy(sudev_unique_list);
-
return 0;
}
-static struct sysfs_driver *open_sysfs_host_driver(void)
+static void usbip_exported_device_destroy(void)
{
- char bus_type[] = "usb";
- char sysfs_mntpath[SYSFS_PATH_MAX];
- char host_drv_path[SYSFS_PATH_MAX];
- struct sysfs_driver *host_drv;
- int rc;
-
- rc = sysfs_get_mnt_path(sysfs_mntpath, SYSFS_PATH_MAX);
- if (rc < 0) {
- dbg("sysfs_get_mnt_path failed");
- return NULL;
- }
-
- snprintf(host_drv_path, SYSFS_PATH_MAX, "%s/%s/%s/%s/%s",
- sysfs_mntpath, SYSFS_BUS_NAME, bus_type, SYSFS_DRIVERS_NAME,
- USBIP_HOST_DRV_NAME);
+ struct list_head *i, *tmp;
+ struct usbip_exported_device *edev;
- host_drv = sysfs_open_driver_path(host_drv_path);
- if (!host_drv) {
- dbg("sysfs_open_driver_path failed");
- return NULL;
+ list_for_each_safe(i, tmp, &host_driver->edev_list) {
+ edev = list_entry(i, struct usbip_exported_device, node);
+ list_del(i);
+ free(edev);
}
-
- return host_drv;
-}
-
-static void usbip_exported_device_delete(void *dev)
-{
- struct usbip_exported_device *edev = dev;
- sysfs_close_device(edev->sudev);
- free(dev);
}
int usbip_host_driver_open(void)
{
int rc;
- host_driver = calloc(1, sizeof(*host_driver));
- if (!host_driver) {
- dbg("calloc failed");
+ udev_context = udev_new();
+ if (!udev_context) {
+ err("udev_new failed");
return -1;
}
- host_driver->ndevs = 0;
- host_driver->edev_list =
- dlist_new_with_delete(sizeof(struct usbip_exported_device),
- usbip_exported_device_delete);
- if (!host_driver->edev_list) {
- dbg("dlist_new_with_delete failed");
- goto err_free_host_driver;
- }
+ host_driver = calloc(1, sizeof(*host_driver));
- host_driver->sysfs_driver = open_sysfs_host_driver();
- if (!host_driver->sysfs_driver)
- goto err_destroy_edev_list;
+ host_driver->ndevs = 0;
+ INIT_LIST_HEAD(&host_driver->edev_list);
rc = refresh_exported_devices();
if (rc < 0)
- goto err_close_sysfs_driver;
+ goto err_free_host_driver;
return 0;
-err_close_sysfs_driver:
- sysfs_close_driver(host_driver->sysfs_driver);
-err_destroy_edev_list:
- dlist_destroy(host_driver->edev_list);
err_free_host_driver:
free(host_driver);
host_driver = NULL;
+ udev_unref(udev_context);
+
return -1;
}
if (!host_driver)
return;
- if (host_driver->edev_list)
- dlist_destroy(host_driver->edev_list);
- if (host_driver->sysfs_driver)
- sysfs_close_driver(host_driver->sysfs_driver);
+ usbip_exported_device_destroy();
free(host_driver);
host_driver = NULL;
+
+ udev_unref(udev_context);
}
int usbip_host_refresh_device_list(void)
{
int rc;
- if (host_driver->edev_list)
- dlist_destroy(host_driver->edev_list);
+ usbip_exported_device_destroy();
host_driver->ndevs = 0;
- host_driver->edev_list =
- dlist_new_with_delete(sizeof(struct usbip_exported_device),
- usbip_exported_device_delete);
- if (!host_driver->edev_list) {
- dbg("dlist_new_with_delete failed");
- return -1;
- }
+ INIT_LIST_HEAD(&host_driver->edev_list);
rc = refresh_exported_devices();
if (rc < 0)
int usbip_host_export_device(struct usbip_exported_device *edev, int sockfd)
{
char attr_name[] = "usbip_sockfd";
- char attr_path[SYSFS_PATH_MAX];
- struct sysfs_attribute *attr;
+ char sockfd_attr_path[SYSFS_PATH_MAX];
char sockfd_buff[30];
int ret;
}
/* only the first interface is true */
- snprintf(attr_path, sizeof(attr_path), "%s/%s",
+ snprintf(sockfd_attr_path, sizeof(sockfd_attr_path), "%s/%s",
edev->udev.path, attr_name);
- attr = sysfs_open_attribute(attr_path);
- if (!attr) {
- dbg("sysfs_open_attribute failed: %s", attr_path);
- return -1;
- }
-
snprintf(sockfd_buff, sizeof(sockfd_buff), "%d\n", sockfd);
- dbg("write: %s", sockfd_buff);
- ret = sysfs_write_attribute(attr, sockfd_buff, strlen(sockfd_buff));
+ ret = write_sysfs_attribute(sockfd_attr_path, sockfd_buff,
+ strlen(sockfd_buff));
if (ret < 0) {
- dbg("sysfs_write_attribute failed: sockfd %s to %s",
- sockfd_buff, attr_path);
- goto err_write_sockfd;
+ err("write_sysfs_attribute failed: sockfd %s to %s",
+ sockfd_buff, sockfd_attr_path);
+ return ret;
}
- dbg("connect: %s", edev->udev.busid);
-
-err_write_sockfd:
- sysfs_close_attribute(attr);
+ info("connect: %s", edev->udev.busid);
return ret;
}
struct usbip_exported_device *usbip_host_get_device(int num)
{
+ struct list_head *i;
struct usbip_exported_device *edev;
- struct dlist *dlist = host_driver->edev_list;
int cnt = 0;
- dlist_for_each_data(dlist, edev, struct usbip_exported_device) {
+ list_for_each(i, &host_driver->edev_list) {
+ edev = list_entry(i, struct usbip_exported_device, node);
if (num == cnt)
return edev;
else
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