android平台初步分析

谁借莪１个温暖的怀抱￠ 2022-08-07 04:49 2阅读 0赞

来自：[http://dyverin.blogspot.com/2009/05/android.html][http_dyverin.blogspot.com_2009_05_android.html],里面的目录结构和unyaffs比较有用。

内核打印:  
Uncompressing Linux.......................................................................................... done, booting the kernel.  
Linux version 2.6.29-00135-ga4ae495 (dybbuk@localhost.localdomain) (gcc version 4.3.1 (GCC) ) \#1 Mon May 18 22:01:19 CST 2009  
CPU: ARM926EJ-S \[41069265\] revision 5 (ARMv5TEJ), cr=00093177  
CPU: VIVT data cache, VIVT instruction cache  
Machine: Goldfish  
Memory policy: ECC disabled, Data cache writeback  
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 24384  
Kernel command line: qemu=1 console=ttyS0 androidboot.console=ttyS1 **android**.checkjni=1**android**.qemud=ttyS2 **android**.ndns=1  
Unknown boot option \`androidboot.console=ttyS1': ignoring  
Unknown boot option \`**android**.checkjni=1': ignoring  
Unknown boot option \`**android**.qemud=ttyS2': ignoring  
Unknown boot option \`**android**.ndns=1': ignoring  
PID hash table entries: 512 (order: 9, 2048 bytes)  
Console: colour dummy device 80x30  
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)  
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)  
Memory: 96MB = 96MB total  
Memory: 93880KB available (2528K code, 671K data, 108K init)  
Calibrating delay loop... 183.91 BogoMIPS (lpj=919552)  
Mount-cache hash table entries: 512  
CPU: Testing write buffer coherency: ok  
net\_namespace: 520 bytes  
NET: Registered protocol family 16  
bio: create slab at 0  
NET: Registered protocol family 2  
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)  
TCP established hash table entries: 4096 (order: 3, 32768 bytes)  
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)  
TCP: Hash tables configured (established 4096 bind 4096)  
TCP reno registered  
NET: Registered protocol family 1  
checking if image is initramfs... it is  
Freeing initrd memory: 140K  
goldfish\_new\_pdev goldfish\_interrupt\_controller at ff000000 irq -1  
goldfish\_new\_pdev goldfish\_device\_bus at ff001000 irq 1  
goldfish\_new\_pdev goldfish\_timer at ff003000 irq 3  
goldfish\_new\_pdev goldfish\_rtc at ff010000 irq 10  
goldfish\_new\_pdev goldfish\_tty at ff002000 irq 4  
goldfish\_new\_pdev goldfish\_tty at ff011000 irq 11  
goldfish\_new\_pdev goldfish\_tty at ff012000 irq 12  
goldfish\_new\_pdev smc91x at ff013000 irq 13  
goldfish\_new\_pdev goldfish\_fb at ff014000 irq 14  
goldfish\_new\_pdev goldfish\_audio at ff004000 irq 15  
goldfish\_new\_pdev goldfish\_memlog at ff006000 irq -1  
goldfish\_new\_pdev goldfish-battery at ff015000 irq 16  
goldfish\_new\_pdev goldfish\_events at ff016000 irq 17  
goldfish\_new\_pdev goldfish\_nand at ff017000 irq -1  
goldfish\_new\_pdev goldfish-switch at ff018000 irq 18  
goldfish\_new\_pdev goldfish-switch at ff019000 irq 19  
goldfish\_pdev\_worker registered goldfish-switch  
goldfish\_pdev\_worker registered goldfish-switch  
goldfish\_pdev\_worker registered goldfish\_nand  
goldfish\_pdev\_worker registered goldfish\_events  
goldfish\_pdev\_worker registered goldfish-battery  
goldfish\_pdev\_worker registered goldfish\_memlog  
goldfish\_audio\_probe  
goldfish\_pdev\_worker registered goldfish\_audio  
goldfish\_pdev\_worker registered goldfish\_fb  
goldfish\_pdev\_worker registered smc91x  
goldfish\_pdev\_worker registered goldfish\_tty  
goldfish\_pdev\_worker registered goldfish\_tty  
goldfish\_pdev\_worker registered goldfish\_tty  
goldfish\_pdev\_worker registered goldfish\_rtc  
goldfish\_pdev\_worker registered goldfish\_timer  
goldfish\_pdev\_worker registered goldfish\_device\_bus  
goldfish\_pdev\_worker registered goldfish\_interrupt\_controller  
ashmem: initialized  
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).  
yaffs May 18 2009 21:56:58 Installing.  
msgmni has been set to 183  
alg: No test for stdrng (krng)  
io scheduler noop registered  
io scheduler anticipatory registered (default)  
io scheduler deadline registered  
io scheduler cfq registered  
allocating frame buffer 320 \* 480, got ffc10000  
Console: switching to colour frame buffer device 40x30  
console \[ttyS0\] enabled  
brd: module loaded  
loop: module loaded  
nbd: registered device at major 43  
smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre  
eth0 (smc91x): not using net\_device\_ops yet  
eth0: SMC91C11xFD (rev 1) at c684c000 IRQ 13 \[nowait\]  
eth0: Ethernet addr: 52:54:00:12:34:56  
goldfish nand dev0: size 4000000, page 2048, extra 64, erase 131072  
goldfish nand dev1: size 4000000, page 2048, extra 64, erase 131072  
goldfish nand dev2: size 4000000, page 2048, extra 64, erase 131072  
mice: PS/2 mouse device common for all mice  
\*\*\* events probe \*\*\*  
events\_probe() addr=0xc6854000 irq=17  
events\_probe() keymap=qwerty  
input: qwerty as /devices/virtual/input/input0  
goldfish\_rtc goldfish\_rtc: rtc core: registered goldfish\_rtc as rtc0  
logger: created 64K log 'log\_main'  
logger: created 256K log 'log\_events'  
logger: created 64K log 'log\_radio'  
IPv4 over IPv4 tunneling driver  
GRE over IPv4 tunneling driver  
TCP cubic registered  
NET: Registered protocol family 17  
RPC: Registered udp transport module.  
RPC: Registered tcp transport module.  
802.1Q VLAN Support v1.8 Ben Greear  
All bugs added by David S. Miller  
VFP support v0.3: implementor 41 architecture 1 part 10 variant 9 rev 0  
goldfish\_rtc goldfish\_rtc: setting system clock to 2009-05-19 05:21:03 UTC (1242710463)  
Freeing init memory: 108K  
init: cannot open '/initlogo.rle'  
yaffs: passed flags ""  
yaffs: Attempting MTD mount on 31.0, "mtdblock0"  
yaffs\_read\_super: isCheckpointed 0  
save exit: isCheckpointed 1  
yaffs: dev is 32505857 name is "mtdblock1"  
yaffs: passed flags ""  
yaffs: Attempting MTD mount on 31.1, "mtdblock1"  
yaffs: restored from checkpoint  
yaffs\_read\_super: isCheckpointed 1  
yaffs: dev is 32505858 name is "mtdblock2"  
yaffs: passed flags ""  
yaffs: Attempting MTD mount on 31.2, "mtdblock2"  
yaffs\_read\_super: isCheckpointed 0  
init: cannot find '/system/bin/playmp3', disabling 'bootsound'  
\# eth0: link up  
warning: \`rild' uses 32-bit capabilities (legacy support in use)  
从这行打印开始,内核调用用户层的init,开始执行ramdisk中的程序.  
init: cannot open '/initlogo.rle'  
**android**的init 与标准linux 的init 逻辑有些差异.他包含开机显示, 像上面的打印则是开机logo的打印. 还包含监控服务的内容,以及udev的内容,以及.  
init会读/init.rc这个配置文件,然后会读取/proc/cpuinfo中Hardware这一行的值,来选择读取/init.Hardware.rc这个文件.  
ramdisk 目录层次:  
.  
|-- data  
|-- default.prop  
|-- dev  
|-- init  
|-- init.goldfish.rc  
|-- init.rc  
|-- proc  
|-- sbin  
| \`-- adbd  
|-- sys  
\`-- system  
目录中没有库文件,所以init与adbd都是静态链接程序.  
init.rc 里会把主要的根文件系统(nand flash中一个分区)mount到/system 目录下,然后执行里面的一些后台程序.  
yaffs2 image可以使用unyaffs解开(http://code.google.com/p/unyaffs):  
.  
|-- abc  
|-- app  
| |-- AlarmClock.apk  
| |-- Browser.apk  
| |-- Calendar.apk  
| |-- CalendarProvider.apk  
| |-- Camera.apk  
| |-- Contacts.apk  
| |-- ContactsProvider.apk  
| |-- Development.apk  
| |-- DownloadProvider.apk  
| |-- DrmProvider.apk  
| |-- GoogleSearch.apk  
| |-- HTMLViewer.apk  
| |-- LatinIME.apk  
| |-- Launcher.apk  
| |-- MediaProvider.apk  
| |-- Mms.apk  
| |-- Music.apk  
| |-- PackageInstaller.apk  
| |-- Phone.apk  
| |-- Settings.apk  
| |-- SettingsProvider.apk  
| |-- SoundRecorder.apk  
| |-- SpareParts.apk  
| |-- SubscribedFeedsProvider.apk  
| |-- TelephonyProvider.apk  
| |-- Term.apk  
| \`-- UserDictionaryProvider.apk  
|-- bin  
| |-- am  
| |-- app\_process  
| |-- applypatch  
| |-- bugreport -> dumpstate  
| |-- cat -> toolbox  
| |-- check\_prereq  
| |-- chmod -> toolbox  
| |-- chown -> toolbox  
| |-- cmp -> toolbox  
| |-- dalvikvm  
| |-- date -> toolbox  
| |-- dbus-daemon  
| |-- dd -> toolbox  
| |-- debuggerd  
| |-- dexopt  
| |-- df -> toolbox  
| |-- dhcpcd  
| |-- dmesg -> toolbox  
| |-- dosfsck  
| |-- dumpcrash -> dumpstate  
| |-- dumpstate  
| |-- dumpsys  
| |-- dvz  
| |-- flash\_image  
| |-- gdbserver  
| |-- getevent -> toolbox  
| |-- getprop -> toolbox  
| |-- gzip  
| |-- hd -> toolbox  
| |-- id -> toolbox  
| |-- ifconfig -> toolbox  
| |-- iftop -> toolbox  
| |-- ime  
| |-- input  
| |-- insmod -> toolbox  
| |-- installd  
| |-- ioctl -> toolbox  
| |-- iptables  
| |-- kill -> toolbox  
| |-- linker  
| |-- ln -> toolbox  
| |-- log -> toolbox  
| |-- logcat  
| |-- logwrapper  
| |-- ls -> toolbox  
| |-- lsmod -> toolbox  
| |-- mediaserver  
| |-- mkdir -> toolbox  
| |-- mkdosfs -> toolbox  
| |-- monkey  
| |-- mount -> toolbox  
| |-- mv -> toolbox  
| |-- netcfg  
| |-- netstat -> toolbox  
| |-- notify -> toolbox  
| |-- ping  
| |-- pm  
| |-- printenv -> toolbox  
| |-- ps -> toolbox  
| |-- pv2way\_omx\_engine\_test  
| |-- pvplayer\_engine\_test  
| |-- qemud  
| |-- radiooptions  
| |-- reboot -> toolbox  
| |-- recovery  
| |-- renice -> toolbox  
| |-- rild  
| |-- rm -> toolbox  
| |-- rmdir -> toolbox  
| |-- rmmod -> toolbox  
| |-- route -> toolbox  
| |-- schedtest  
| |-- schedtop -> toolbox  
| |-- sdutil  
| |-- sendevent -> toolbox  
| |-- service  
| |-- servicemanager  
| |-- setconsole -> toolbox  
| |-- setprop -> toolbox  
| |-- sh  
| |-- showlease  
| |-- sleep -> toolbox  
| |-- smd -> toolbox  
| |-- start -> toolbox  
| |-- stop -> toolbox  
| |-- surfaceflinger  
| |-- svc  
| |-- sync -> toolbox  
| |-- system\_server  
| |-- test\_pvauthorengine  
| |-- toolbox  
| |-- top -> toolbox  
| |-- umount -> toolbox  
| |-- vmstat -> toolbox  
| |-- vold  
| |-- watchprops -> toolbox  
| \`-- wipe -> toolbox  
|-- build.prop  
|-- etc  
| |-- NOTICE.html.gz  
| |-- apns-conf.xml  
| |-- bookmarks.xml  
| |-- dbus.conf  
| |-- dhcpcd  
| | |-- dhcpcd-hooks  
| | | |-- 01-test  
| | | |-- 20-dns.conf  
| | | \`-- 95-configured  
| | |-- dhcpcd-run-hooks  
| | \`-- dhcpcd.conf  
| |-- event-log-tags  
| |-- hosts  
| |-- init.goldfish.sh  
| |-- permissions  
| | \`-- platform.xml  
| |-- pvplayer.cfg  
| |-- security  
| | |-- cacerts.bks  
| | \`-- otacerts.zip  
| \`-- vold.conf  
|-- fonts  
| |-- DroidSans-Bold.ttf  
| |-- DroidSans.ttf  
| |-- DroidSansFallback.ttf  
| |-- DroidSansMono.ttf  
| |-- DroidSerif-Bold.ttf  
| |-- DroidSerif-BoldItalic.ttf  
| |-- DroidSerif-Italic.ttf  
| \`-- DroidSerif-Regular.ttf  
|-- framework  
| |-- am.jar  
| |-- **android**.awt.jar  
| |-- **android**.policy.jar  
| |-- **android**.test.runner.jar  
| |-- com. **android**.im.plugin.jar  
| |-- core.jar  
| |-- ext.jar  
| |-- framework-res.apk  
| |-- framework-tests.jar  
| |-- framework.jar  
| |-- ime.jar  
| |-- input.jar  
| |-- monkey.jar  
| |-- pm.jar  
| |-- services.jar  
| \`-- svc.jar  
|-- lib  
| |-- browsertestplugin.so  
| |-- hw  
| | \`-- sensors.goldfish.so  
| |-- libEGL.so  
| |-- libFFTEm.so  
| |-- libGLESv1\_CM.so  
| |-- libaes.so  
| |-- libagl.so  
| |-- libandroid\_runtime.so  
| |-- libandroid\_servers.so  
| |-- libaudioflinger.so  
| |-- libc.so  
| |-- libc\_debug.so  
| |-- libcameraservice.so  
| |-- libcorecg.so  
| |-- libcrypto.so  
| |-- libctest.so  
| |-- libcutils.so  
| |-- libdbus.so  
| |-- libdl.so  
| |-- libdrm1.so  
| |-- libdrm1\_jni.so  
| |-- libdvm.so  
| |-- libemoji.so  
| |-- libexif.so  
| |-- libexpat.so  
| |-- libhardware.so  
| |-- libhardware\_legacy.so  
| |-- libicudata.so  
| |-- libicui18n.so  
| |-- libicuuc.so  
| |-- libjni\_latinime.so  
| |-- liblog.so  
| |-- libm.so  
| |-- libmedia.so  
| |-- libmedia\_jni.so  
| |-- libmediaplayerservice.so  
| |-- libnativehelper.so  
| |-- libnetutils.so  
| |-- libomx\_aacdec\_sharedlibrary.so  
| |-- libomx\_amrdec\_sharedlibrary.so  
| |-- libomx\_amrenc\_sharedlibrary.so  
| |-- libomx\_avcdec\_sharedlibrary.so  
| |-- libomx\_avcenc\_sharedlibrary.so  
| |-- libomx\_m4vdec\_sharedlibrary.so  
| |-- libomx\_m4venc\_sharedlibrary.so  
| |-- libomx\_mp3dec\_sharedlibrary.so  
| |-- libomx\_sharedlibrary.so  
| |-- libopencore\_2way.so  
| |-- libopencore\_author.so  
| |-- libopencore\_common.so  
| |-- libopencore\_download.so  
| |-- libopencore\_downloadreg.so  
| |-- libopencore\_mp4local.so  
| |-- libopencore\_mp4localreg.so  
| |-- libopencore\_net\_support.so  
| |-- libopencore\_player.so  
| |-- libopencore\_rtsp.so  
| |-- libopencore\_rtspreg.so  
| |-- libpagemap.so  
| |-- libpixelflinger.so  
| |-- libreference-ril.so  
| |-- libril.so  
| |-- libsgl.so  
| |-- libskiagl.so  
| |-- libsonivox.so  
| |-- libsoundpool.so  
| |-- libsqlite.so  
| |-- libsrec\_jni.so  
| |-- libssl.so  
| |-- libstdc++.so  
| |-- libsurfaceflinger.so  
| |-- libsystem\_server.so  
| |-- libthread\_db.so  
| |-- libui.so  
| |-- libutils.so  
| |-- libvorbisidec.so  
| |-- libwbxml.so  
| |-- libwbxml\_jni.so  
| |-- libwebcore.so  
| |-- libwpa\_client.so  
| |-- libxml2wbxml.so  
| \`-- libz.so  
|-- usr  
| |-- keychars  
| | |-- qwerty.kcm.bin  
| | |-- qwerty2.kcm.bin  
| | \`-- tuttle2.kcm.bin  
| |-- keylayout  
| | |-- AVRCP.kl  
| | |-- qwerty.kl  
| | \`-- tuttle2.kl  
| |-- share  
| | |-- bmd  
| | | |-- RFFspeed\_501.bmd  
| | | \`-- RFFstd\_501.bmd  
| | \`-- zoneinfo  
| | |-- zoneinfo.dat  
| | |-- zoneinfo.idx  
| | \`-- zoneinfo.version  
| \`-- srec  
| \`-- config  
| \`-- en.us  
| |-- baseline.par  
| |-- baseline11k.par  
| |-- baseline8k.par  
| |-- dictionary  
| | |-- basic.ok  
| | |-- cmu6plus.ok.zip  
| | \`-- enroll.ok  
| |-- g2p  
| | \`-- en-US-ttp.data  
| |-- grammars  
| | \`-- VoiceDialer.g2g  
| \`-- models  
| |-- generic.swiarb  
| |-- generic11.lda  
| |-- generic11\_f.swimdl  
| |-- generic11\_m.swimdl  
| |-- generic8.lda  
| |-- generic8\_f.swimdl  
| \`-- generic8\_m.swimdl  
\`-- xbin  
|-- add-property-tag  
|-- backup  
|-- check-lost+found  
|-- cpueater  
|-- crasher  
|-- daemonize  
|-- dbus-monitor  
|-- **dbus-send**  
|-- dexdump  
|-- latencytop  
|-- librank  
|-- nc  
|-- netperf  
|-- netserver  
|-- opcontrol  
|-- oprofiled  
|-- pppd  
|-- procmem  
|-- procrank  
|-- scp  
|-- showmap  
|-- showslab  
|-- sqlite3  
|-- ssh  
|-- strace  
|-- su  
\`-- timeinfo  
25 directories, 302 files

[http_dyverin.blogspot.com_2009_05_android.html]: http://dyverin.blogspot.com/2009/05/android.html

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