BSD的一些代码分析

发布于 2008-05-22 21:55:04 浏览：17284 订阅该版

8 个回答

layer2 2008-05-25

这家伙很懒，什么也没写！

the important files in the kern as below(可能有不精确的，代后会更正 ):

- bufq_disksort.c      ---        	Seek sort for disks
- bufq_fcfs.c          ---        	First-come first-served sort for disks
- cnmagic.c            ---         	magic string
- core_elf32.c         ---        	Support for the Elf32/Elf64 core file format
- core_elf64.c         ---        	Support for the Elf32/Elf64 core file format
- core_netbsd.c        ---        	Support for the historic NetBSD core file format
- exec_aout.c          ---        	Support for out executable  format
- exec_conf.c          ---        	Build in functions of supporting xx executable format.exec switch
- exec_elf32.c         ---        	Support for elf32 executable format
- exec_elf64.c         ---        	Support for elf64 executable format
- exec_script.c        ---        	support for script executable format
- exec_subr.c          ---        	vm function support for exec_xx.c(setup the virtual memory space and to load the program code and data sections)
- init_main.c          ---        	System startup; initialize the world, create process 0, mount root filesystem, and fork to create init and pagedaemon.  Most of the hard work is done in the lower-level initialization routines including startup(), which does memory initialization and autoconfiguration.
- init_sysctl.c        ---        	init system control
- init_sysent.c        ---        	System call switch table.
- kern_acct.c          ---        	simplify accounting operations, this mechanism should be replaced by one in which an accounting log file
- kern_auth.c          ---        	Authorize a request by credential
- kern_clock.c         ---        	Clock handling routines
- kern_descrip.c       ---         Descriptor management.
- kern_event.c         ---        	An array containing for each system call an entry with the number of arguments, the size of the system call arguments structure, and a pointer to the function that implements the system call in the kernel
- kern_exec.c          ---        	entry of execve switch and init execve  switchs
- kern_exit.c          ---        	a suit of exiting function about kern
- kern_fork.c          ---        	system  fork
- kern_kthread.c       ---        	functions about kthread creating and destroying 
- kern_ktrace.c        ---        	operations to ktrace system call
- kern_lock.c          ---        	kernel lock
- kern_lwp.c           ---        	Support  a light-weight process
- kern_malloc.c        ---        	Functions about kernel memory malloc and free 
- kern_ntptime.c       ---        	These routines constitute the Network Time Protocol (NTP) interfaces for user and daemon application programs
- kern_physio.c        ---        	Raw Devices and Physical I/O
- kern_proc.c          ---        	management about process
- kern_prot.c          ---        	System calls related to processes and protection
- kern_ras.c           ---        	restartable atomic sequences
- kern_resource.c      ---        	Resource controls and accounting.
- kern_sa.c            ---        	 the scheduler activation implementation that permits efficent management of concurrency
- kern_sig.c           ---        	 kernel signal
- kern_subr.c          ---        	kern subroutines  including hook, trace ,device ..
- kern_synch.c         ---              Scheduling algorithms
- kern_sysctl.c        ---        	kern  system control,sysctl system call.
- kern_tc.c            ---        	kern timer counter
- kern_time.c          ---        	Time of day and interval timer support.
- kern_timeout.c       ---        	Timeouts are kept in a hierarchical timing wheel. The c_time is the value of the global variable ""hardclock_ticks"" when the timeout should be called.
- kern_todr.c          ---        	time-of-day clock support
- kern_uuid.c          ---        	support uuid (Universally Unique  IDentifier)
- kern_xxx.c           ---        	system reboot (the　ｒｅａｓｏｎ　ｔｈａｔ　ｔｈｅ name is ＸＸＸ　？？)
- subr_autoconf.c      ---        	Autoconfiguration subroutines.
- subr_blist.c         ---       	Bitmap allocator/deallocator, using a radix tree with hinting
- subr_bufq.c          ---       	support　device buffer queue
- subr_callback.c      ---       	support callback
- subr_devsw.c         ---       	New device switch framework is developing. So debug options are always turned on.
- subr_disk.c          ---       	subroutine　about disk
- subr_evcnt.c         ---       	generic  event counter framework
- subr_extent.c        ---       	General purpose extent manager.
- subr_iostat.c        ---       	support the i/o statistics
- subr_kmem.c          ---       	allocator of kernel wired memory.
- subr_log.c           ---       	Error log buffer for kernel printf's.
- subr_once.c          ---       	support Running a function exactly once
- subr_optstr.c        ---       	The options string management functions 
- subr_pool.c          ---       	Pool resource management utility.
- subr_prf.c           ---       	printf
- subr_prof.c          ---       	system  profiling
- subr_specificdata.c  ---       	support specificdata
- subr_userconf.c      ---       	user conf  function suit
- subr_vmem.c          ---       	Magazines and Vmem: Extending the Slab Allocator to Many CPUs and Arbitrary Resources
- subr_workqueue.c     ---       	support work queue ( Enqueue the work wk into the workqueue wq)
- subr_xxx.c           ---       	Miscellaneous trivial functions, including many that are often inline-expanded or done in assembler.
- sys_generic.c        ---       	generic functions
- sys_pipe.c           ---       	This file contains a high-performance replacement for the socket-based pipes scheme originally used in FreeBSD/4.4Lite.
- sys_pmc.c            ---       	support performance-monitoring counter 
- sys_process.c        ---       	support process trace
- sys_socket.c         ---       	support socket
- syscalls.c           ---       	system call
- sysv_ipc.c           ---       	support ipc
- sysv_msg.c           ---       	support msg
- sysv_sem.c           ---       	suppoort sem
- sysv_shm.c           ---       	support shm
- tty.c                ---       	support tty
- tty_bsdpty.c         ---       	support tty
- tty_conf.c           ---       	support tty
- tty_ptm.c            ---       	pty multiplexor driver 
- tty_pty.c            ---       	Pseudo-teletype Driver
- tty_subr.c           ---       	support tty
- tty_tty.c            ---       	Indirect driver for controlling tty.
- uipc_domain.c        ---       	network domain management
- uipc_mbuf.c          ---       	memory management in the kernel IPC subsystem
- uipc_mbuf2.c         ---       	memory management in the kernel IPC subsystem
- uipc_proto.c         ---       	Definitions of protocols supported in the UNIX domain
- uipc_sem.c           ---       	uipc semphore for socket
- uipc_socket.c        ---       	Socket operation routines. These routines are called by the routines in sys_socket.c or from a system process, and implement the semantics of socket operations by switching out to the protocol specific routines.
- uipc_socket2.c       ---       	Primitive routines for operating on sockets and socket buffers
- uipc_syscalls.c      ---       	System call interface to the socket abstraction.
- uipc_usrreq.c        ---       	UNIX domain sockets
- vfs_bio.c            ---       	support vfs, realization of the buffer zone management
- vfs_cache.c          ---       	vfs   name cache
- vfs_getcwd.c         ---       	Gets the current working directory
- vfs_hooks.c          ---       	VFS hooks.
- vfs_init.c           ---       	vfs init, Allocate and fill in operations vectors.
- vfs_lockf.c          ---       	record locking on (vf)files
- vfs_lookup.c         ---       	lookup function
- vfs_subr.c           ---       	External virtual filesystem routines
- vfs_syscalls.c       ---       	Virtual File System System Calls
- vfs_vnops.c          ---       	vnode operations
- vfs_xattr.c          ---       	VFS extended attribute support.
- vnode_if.c           ---       	Vnode Operations