Wait for device to disappear after reboot-bootloader.
(Linux only for now) With fastboot reading serial numbers from sysfs, it had
become possible for a fastboot command issued immediately after rebooting
the bootloader to fail, because sysfs still thought the device was online.
To prevent this, after reboot-bootloader we wait for the device to disconnect.
Also made usb_read and usb_write fail immediately if the descriptor has been
closed; this prevents an incorrect error message ("Bad file descriptor")
when errors from fb_getvar are ignored (e.g., by fb_format_supported).
Also removed unused fd param from filter_usb_device, and simplified logic
in usb_write by using do/while instead of a special case for len == 0.
Change-Id: I799b857eab411fd8ad25f5777fc61c685152ea86
diff --git a/fastboot/fastboot.h b/fastboot/fastboot.h
index c1b2964..976c397 100644
--- a/fastboot/fastboot.h
+++ b/fastboot/fastboot.h
@@ -58,10 +58,13 @@
void fb_queue_command(const char *cmd, const char *msg);
void fb_queue_download(const char *name, void *data, unsigned size);
void fb_queue_notice(const char *notice);
+void fb_queue_wait_for_disconnect(void);
int fb_execute_queue(usb_handle *usb);
int fb_queue_is_empty(void);
/* util stuff */
+double now();
+char *mkmsg(const char *fmt, ...);
void die(const char *fmt, ...);
/* Current product */