December 2004
Intermediate to advanced
976 pages
33h 33m
English
As described in Chapter 9, in the framework of the Windows I/O system, NTFS and other file systems are loadable device drivers that run in kernel mode. They are invoked indirectly by applications that use Windows or other I/O APIs (such as POSIX). As Figure 12-20 shows, the Windows environment subsystems call Windows system services, which in turn locate the appropriate loaded drivers and call them. (For a description of system service dispatching, see the section "System Service Dispatching" in Chapter 3.)

Figure 12-20. Components of the Windows I/O system
The layered drivers pass I/O requests to one another by calling the ...
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