The Integration Of File System In The Linux User Space And Its Application On The Camera

With the development of embedded system, more and more persons put their eyes’on the Linux system that has its own characters. Because of Linux itself features, theyinclude open source, higher level safe and easily changed. At the same time theembedded system also need the operation system which can provide stable freekernel,cut or add modules easily, transplant to another platforms. The features meet theembedded system special requirements.Based on company customers’ requirements, accomplished the broadcasting andrecording of functions in the Linux kernel operating system in my paper, cooperatingthem in the Linux user space.So we usually combine Linux operating system and the embedded system together.My paper have been finished through Linux operating system that is mixed withembedded system. In order to achieve the company’s needs and have copyrights, ourown design depend on open source software, and we want to avoid compiling the Linuxkernel once again after file handled. As a fact of that, we choose to design andaccomplish them in the Linux operating system user space.My paper is to complete the former requirements including the broadcasting andrecording functions, according to the advanced digital camera’s special requirements.Not only provide the above functions, but also improve the performance of the filesystem. For video camera special requirements, we should choose the particular filesystem which needn’t be interviewed too often. If the file system called for journalcatalog in detail, it will destroy the disk and then cut down the life of the disk.Compared with the journal file system, the exFAT file system is more suited for videocamera.But the Linux operating system can’t support exFAT file system writing operation.We have to make the best use of fuse-exfat plug-in unit in order to mount the exFAT filesystem. At last, we can build the exFAT file sytem in the Linux operating systemsuccessfully by the basis of FUSE framework.Integrating the file system wrapper module, the file system encapsulation moduleand the exFAT file system wrapper module into the entirety, greatly improve the filesystem performance and shorten the time of interviewing the disk. Compared with thetraditional Linux framework file system, writing file rate has improved a lot.In a word, after having finished the graduate design mentioned in my paper, thereis the file system in the Linux operating system user space, including the exFAT filesystem mounted, in order to improve file system functions a lot. For example, the writing file rate has improved quite a lot.