device mapper

According to ldd3, the Linux device model can be considered as an advanced textbook, which is unnecessary for most program authors. But I personally think: For an embedded Linux underlying programmer, this part of content is very important. For example, I learned about ARM9. many bus (such as SPI, IIC, IIS, and so on) have been written into subsystems in Linux, and no driver needs to be written by myself; unlike PCI, USB, and other tutorials on ldd3,

A new device driver model-platform (platform) device driver, platform device driver (platform_device) and platform driver (Platform_driver) is introduced into the Linux2.6 kernel, The introduction of platform devices makes Linux device drivers more portable.First, platform equipmentPlatform

Android Device Manager Vulnerability 2: prevents users from activating the Device Manager, android2 -- In June 2013, Russian security vendor Kaspersky found the most powerful mobile trojan in history-Obad. a. This Trojan exploits an unknown Android Device Manager Vulnerability (ANDROID-9067882). A mobile phone trojan that has activated the permission of the

Environment: Solaris 10,oracle 11.2.0.4 2nodes RACSymptoms: Rman backup error is as followsRMAN-00571: ===========================================================RMAN-00569: =============== ERROR MESSAGE, STACK follows ===============RMAN-00571: ===========================================================Rman-03009:failure of allocate command on DEV_0 channel at 12/05/2014 10:25:25Ora-19554:error allocating device,

Device files: block Device file B: A device that is randomly accessed by block;character device file C : by character, linear device;Common block device file B: HDDDevice file name for the hard disk device:IDE, ATA:HDSATA, SCSI, U

Linux MTD (Memory technology Device) subsystem analysisFor Atheros Char deviceRead the Linux MTD Source code Analysis to this part of the overall understanding, combined with the existing code, analysis of how Atheros MTD is used.Linux kernel:2.6.31.Atheros platform:qca9890???Refer to the Linux MTD Source code Analysis , where MTD is divided into 4 layers, from top to bottom: Character device node, characte

Loaded from http://blog.csdn.net/sjwangjinbao/article/details/6077225When writing a bus device driver, it was found that the struct device in the 2.6.33.2 kernel had no members of BUS_ID, and the const char *init_name member was found. However, this member cannot be used directly to set and read the device name.The method for kernel operation is dev_name and Dev_

Article Title: linux Device Driver note-character Device Driver. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. ※"Global" means that if a device is enabled multiple times, all file descriptors that open it share the data. "Pe

In Unix-like operating systems,Loop Device,LoopbackDevice,VND(Vnode disk), orLofi(Loopback FileInterface) is a pseudo-device that makes a fileAccessible as a pseudo-device. A loop device may allow some kindData elaboration during this redirection; for example, the device may

A new set of driver management and registration mechanisms have been introduced from Linux 2.6:P latform_device and Platform_driver.Most of the device drivers in Linux can use this mechanism, the device is represented by Platform_device, and the driver is registered with Platform_driver.Compared with the traditional device driver mechanism (registration via Drive

Brief introduction A block device driver accesses a device primarily by transmitting a fixed-size random data Linux kernel video block devices are basic device types that differ from character devices The Linux block device driver interface allows the block d