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f3probe: reduce code of the manual reset

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One doesn't have to wait for the remove event,
only for the add event.
This commit is contained in:
Michel Machado 2014-12-18 08:30:55 -03:00
parent 1caeff3205
commit 263ea4f68e
1 changed files with 3 additions and 27 deletions
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30
libdevs.c
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@ -398,25 +398,6 @@ static struct udev_monitor *create_monitor(struct udev *udev,
return mon;
}
static void wait_for_remove_action(struct udev *udev, const char *devnode)
{
struct udev_monitor *mon;
bool done;
mon = create_monitor(udev, "usb", "usb_device");
assert(mon);
do {
struct udev_device *dev = udev_monitor_receive_device(mon);
assert(dev);
done = !strcmp(udev_device_get_action(dev), "remove") &&
!strcmp(udev_device_get_devnode(dev), devnode);
udev_device_unref(dev);
} while (!done);
assert(!udev_monitor_unref(mon));
}
static char *wait_for_add_action(struct udev *udev,
const char *id_vendor, const char *id_product, const char *serial)
{
@ -462,7 +443,7 @@ static int bdev_manual_usb_reset(struct device *dev)
struct block_device *bdev = dev_bdev(dev);
struct udev *udev;
struct udev_device *usb_dev;
const char *devnode, *id_vendor, *id_product, *serial;
const char *id_vendor, *id_product, *serial, *devnode;
udev = udev_new();
if (!udev)
@ -473,7 +454,6 @@ static int bdev_manual_usb_reset(struct device *dev)
if (!usb_dev)
errx(1, "Unable to find USB parent device of block device `%s'",
bdev->filename);
devnode = udev_device_get_devnode(usb_dev);
id_vendor = udev_device_get_sysattr_value(usb_dev, "idVendor");
id_product = udev_device_get_sysattr_value(usb_dev, "idProduct");
serial = udev_device_get_sysattr_value(usb_dev, "serial");
@ -485,14 +465,10 @@ static int bdev_manual_usb_reset(struct device *dev)
*/
assert(!close(bdev->fd));
printf("Please unplug the USB drive. Waiting...");
fflush(stdout);
wait_for_remove_action(udev, devnode);
printf(" Thanks\n");
printf("Please plug back the USB drive. Waiting...");
printf("Please unplug and plug back the USB drive. Waiting...");
fflush(stdout);
devnode = wait_for_add_action(udev, id_vendor, id_product, serial);
assert(devnode);
printf(" Thanks\n\n");
udev_device_unref(usb_dev);