Peeling Apple's Operating Systems
System-level developers, kernel hackers, and intrigued Apple-lytes, take heed: This book lets you explore the nooks and crannies of Mac OS X and iOS, delving into the architecture of both systems, and picking up where the frameworks (and documentation) leave off. It offers clear, detailed explanation of the inner workings of Apple's systems, including proprietary APIs, most of which are documented for the first time.
As you traverse the architecture, moving from user to kernel mode, each layer and component is unraveled with annotated code samples and hands-on experiments, comparing and contrasting its implementation in both OSes. Topics include:
- The boot process: Mac's EFI, iOS's iBoot, and kernel startup
- Processes, threads, and virtual memory management
- Debugging and profiling, using DTrace, ptrace, and hidden system calls
- The system level APIs: POSIX calls, Mach traps, and OS X/iOS proprietary
- File system architecture, including VFS and HFS+
- Network architecture: from sockets to interfaces, and network drivers
- Kernel extensions, drivers, and a discussion of I/O Kit architecture
- Security features, Mandatory Access Control, and iOS jail
The companion web site (http://www.newosxbook.com) includes sample programs, freely downloadable tools, updated references, and bonus additions.
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