linux persistent usb

the layman. The USB device has a configuration, which we mentioned earlier, and there is another setting (setting ). A little strange, aren't these two words the same thing? Let's take our most familiar mobile phone for example. If you don't talk about the configuration, you just need to set it. Various configurations of a mobile phone may have been determined. For example, the vibration or ringtones are determined, and various functions are determin

, structusb_sg_request actually represents a scattergather request. From the perspective of our non-USB core layer, the usage of these two structs is the same. For each urb request, all we do is apply for a struct variable or request a pointer, and then apply for memory. The second step is to submit urb, that is, call usb_submit_urb ().Core will help us solve the problem. Every module in Linux provides serv

Install ubuntu on a USB flash drive and start Linux from the USB flash drive. If we install the Linux system directly on our hard disk, the GRUB of Linux will overwrite the boot guide of window. It is not convenient to carry. So I want to install a ubuntu system on a

This story uses kernel code 2.6.22. In the Linux kernel code directory, all the code related to the device driver is under the drivers/Directory. Using the ls command in this directory, you can see many subdirectories: lfg1: /usr/src/linux-2.6.22/drivers # lsKconfi... This story uses kernel code 2.6.22. In the Linux kernel code directory, all the code related to

Create a Windows 7 installation USB flash drive and a Windows 7 installation USB flash drive in linux Http://blog.csdn.net/pipisorry/article/details/41369821 Linux is installed, and win7 is installed with a USB flash drive (network installation should be acceptable ), First,

course, after the value is assigned, it represents an array name, just as we have defined the value assigned in struct usb_driver usb_storage_driver ,. id_table = storage_usb_ids. Well, let's take a look at the structure of usb_device_id. Struct usb_device_id from include/Linux/mod_devicetable.h: 98 struct usb_device_id { 99/* whichfields to match against? */ 100 _ match_flags; 101 102/* used for product specificmatches; range is random */ 103 _ 16id

Udisk boot installation linux( not the installation of linux5111.diskgenius.exe on the udisk can meet my needs. I tried it and it is still very useful. The DiskGenius software interface is used to create a usb hdd boot disk. this software is used to create a usb hdd boot disk. at this time, the USB flash disk can be st

unsigned int delay_use = 5; 111 module_param (delay_use, uint, S_IRUGO | S_IWUSR ); 112 MODULE_PARM_DESC (delay_use, "seconds todelay before using a new device "); Set delay_use to 5, while module_param is a macro provided by Linux Kernel 2.6, so that delay_use can be set when the module is loaded. (If this parameter is not set, the value 5 indicates that a new device is waiting for a delay of 5 seconds .) Why latency? When the inserted

USB flash drive to install Linux system, unplug the USB drive system cannot bootProblem Description:Use a USB stick to install the Linux operating system, excluding the USB stick, unable to boot the system normally, you must inser

U disk boot and installation of Linux (not to install Linux on the u disk) 1. DiskGenius.exe this software can meet my needs, try it, it is still very useful.DiskGenius Software InterfaceCreate a usb hdd boot diskUse this software to make the USB flash drive into a usb hdd b

unsigned int delay_use = 5; 111 module_param (delay_use, uint, s_irugo | s_iwusr ); 112 module_parm_desc (delay_use, "seconds todelay before using a new device "); Set delay_use to 5, while module_param is a macro provided by Linux kernel 2.6, so that delay_use can be set when the module is loaded. (If this parameter is not set, the value 5 indicates that a new device is waiting for a delay of 5 seconds .) Why latency? When the inserted

-storage: devicescan complete \ n "); 936 937/* shocould we unbind if no devices weredetected? */ 938} 939 940 scsi_host_put (us_to_host (us )); 941 complete_and_exit ( threads_gone, 0 ); 942} Row 3, where does delay_use come from? In the same file, a static variable is defined at the beginning: 110 static unsigned int delay_use = 5; 111 module_param (delay_use, uint, S_IRUGO | S_IWUSR ); 112 MODULE_PARM_DESC (delay_use, "seconds todelay before using a new device "); Set delay_use to

The following describes the usb_stor_control_thread () function. What wakes up is the up ( (us-> sema) from the queuecommand, and us-> sulfate is assigned to the Server Load balancer, in contrast, the Server Load balancer is a parameter passed in when the SCSI core layer calls the queuecommand. Focus on usb_stor_control_thread (). Row 3: As mentioned earlier, we have to look at the dev_mutex lock from a higher perspective after reading the entire module. Line 3: If us_fw.x_disconnecting is set,

The following describes the usb_stor_control_thread () function. What wakes up is the up ( (US-> SEMA) from the queuecommand, and us-> sulfate is assigned to the Server Load balancer, in contrast, the Server Load balancer is a parameter passed in when the SCSI core layer calls the queuecommand. Focus on usb_stor_control_thread (). Row 3: As mentioned earlier, we have to look at the dev_mutex lock from a higher perspective after reading the entire module. Line 3: If us_fw.x_disconnecting is set,

Capture the USB flash drive as an iso file in linux and copy the USB flash drive in batches using iso Sometimes we need to capture the entire USB flash drive as an iso file. This iso can be used to burn the disc. Of course, we can also use the software to burn it back to another US