ENOSYS:
error code
2008年1月31日 星期四
svn
co:
co = checkout，將程式donwload下來
svn co http://SVN_PATH/svn_project
svn import . svn://192.168.1.200/projects/tickets --message "initial import" –username eldon
將程式存放到repository
svn checkout svn://192.168.1.200/projects/tickets tickets
將repository上的程式download下來
svn remove log/*
svn commit --message "removing all log files from subversion"
移除repository上log/下的files
svn propset svn:ignore "*.log" log/
svn commit –message "Ignore all log files in the log directory"
除止log下的files上傳到repository
co = checkout，將程式donwload下來
svn co http://SVN_PATH/svn_project
svn import . svn://192.168.1.200/projects/tickets --message "initial import" –username eldon
將程式存放到repository
svn checkout svn://192.168.1.200/projects/tickets tickets
將repository上的程式download下來
svn remove log/*
svn commit --message "removing all log files from subversion"
移除repository上log/下的files
svn propset svn:ignore "*.log" log/
svn commit –message "Ignore all log files in the log directory"
除止log下的files上傳到repository
create matching directory
I/O Kit dictionary-creation function
IOServiceMatching:
creates a dictionary you can use to match on an object’s class or superclass.
use IOProviderClass key
ex:
CFMutableDictionaryRef myUSBMatchDictionary = NULL;
myUSBMatchDictionary = IOServiceMatching(kIOUSBDeviceName);
IOServiceMatching:
creates a dictionary you can use to match on an object’s class or superclass.
use IOProviderClass key
ex:
CFMutableDictionaryRef myUSBMatchDictionary = NULL;
myUSBMatchDictionary = IOServiceMatching(kIOUSBDeviceName);
scsi inquiry
inquiry command
If EVPD = 1, server should return VPD specified by the page code
If EVPD = 0, server shall return the standard INQUIRY data
If EVPD = 1, server should return VPD specified by the page code
If EVPD = 0, server shall return the standard INQUIRY data
ShiftOne JRat
可trace Java程式運行過程中的function call。
如何trace
在觀察的java程式的VM arguments加上
-javaagent:shiftone-jrat.jar
如何trace
在觀察的java程式的VM arguments加上
-javaagent:shiftone-jrat.jar
shark( profile program in MAC)
ex:
如果test是java的程式，
java -agentlib:Shark test 使得此程式可被shark觀看，
然後在shark的程式裡選擇start開始sample。
選擇java call trace可觀看程式運行時的function call呼叫情形。
如果test是java的程式，
java -agentlib:Shark test 使得此程式可被shark觀看，
然後在shark的程式裡選擇start開始sample。
選擇java call trace可觀看程式運行時的function call呼叫情形。
2008年1月30日 星期三
log4j
It allows the developer to control which log statements are output with arbitrary granularity
ex:
log4j.logger.idv.ben.MyTestClass=DEBUG, stdout, F
定義"idv.ben.MyTestClass",
輸出到stdout和F，
static Logger logger = Logger.getLogger("idv.ben.MyTestClass");
取得定義的logger
logger.debug("Hello Log4j");
印出Hello Log4j
ex:
log4j.logger.idv.ben.MyTestClass=DEBUG, stdout, F
定義"idv.ben.MyTestClass",
輸出到stdout和F，
static Logger logger = Logger.getLogger("idv.ben.MyTestClass");
取得定義的logger
logger.debug("Hello Log4j");
印出Hello Log4j
TIME SIGNATURE and staff
4
4
上面的4表示一小節(measure)有4拍，
下面的4表示which type of note will receive one beat，這裡表示4分音符代表一拍
staff(五線譜)
4
上面的4表示一小節(measure)有4拍，
下面的4表示which type of note will receive one beat，這裡表示4分音符代表一拍
staff(五線譜)
darwin port
http://darwinports.com/
update
sudo port -d selfupdate
install ethereal
sudo port install ethereal
update
sudo port -d selfupdate
install ethereal
sudo port install ethereal
2008年1月29日 星期二
black keys，C， Treble Clef, QUARTER REST
black keys有兩種，
2個black keys連在一起
3個black keys連在一起
C: on the left side of each group of two black keys
MIDDLE C: the C that is closest to the EXACT middle of piano
Each section starts with a C and includes the next 6 white keys, making 7 keys in a section.
Notice that each section of 7 keys includes a group of 2 black keys and a group of 3 black keys.
The Treble Clef tells you to use your right hand
quarter rest tells you to do is REST for 1 beat
2個black keys連在一起
3個black keys連在一起
C: on the left side of each group of two black keys
MIDDLE C: the C that is closest to the EXACT middle of piano
Each section starts with a C and includes the next 6 white keys, making 7 keys in a section.
Notice that each section of 7 keys includes a group of 2 black keys and a group of 3 black keys.
The Treble Clef tells you to use your right hand
quarter rest tells you to do is REST for 1 beat
smartmontools
smartd -q onecheck Registers devices, and checks the status of the devices exactly once
SystemStarter
Start, stop, and restart system services
SystemStarter [-gvxdDqn] [action [service]]
Actions:
start, stop, restart
SystemStarter [-gvxdDqn] [action [service]]
Actions:
start, stop, restart
2008年1月28日 星期一
2008年1月27日 星期日
Java Socket
InetAddress getLocalAddress():
Gets the local address to which the socket is bound.
public class InetAddress
An IP address is either a 32-bit or 128-bit unsigned number used by IP
Gets the local address to which the socket is bound.
public class InetAddress
An IP address is either a 32-bit or 128-bit unsigned number used by IP
2008年1月24日 星期四
2008年1月23日 星期三
instanceof
判斷一個物件是否是某個type
ex: if(x instanceof Dog)
如果x的type是dog，and dog extends Animal
x instanceof Dog and x instanceof Animal are both true
如果y的type是Animal，
y instanceof Animal is ture. But y instanceof Dog is false
ex: if(x instanceof Dog)
如果x的type是dog，and dog extends Animal
x instanceof Dog and x instanceof Animal are both true
如果y的type是Animal，
y instanceof Animal is ture. But y instanceof Dog is false
enumeration
java.util Interface Enumeration
for traverse sequence of elements
hasMoreElements()
E nextElement()
Collections' method
static Enumeration enumeration(Collection c):
Returns an enumeration over the specified collection.
for traverse sequence of elements
hasMoreElements()
E nextElement()
Collections' method
static
Returns an enumeration over the specified collection.
NetworkInterface, InetAddress, Inet6Address
java.net.NetworkInterface
public final class NetworkInterface extends Object
A Network Interface made up of a name, and a list of IP addresses assigned to this interface.
static Enumeration getNetworkInterfaces()
Returns all the interfaces on this machine
java.net Class InetAddress
public class InetAddressextends Object implements Serializable
An instance of an InetAddress consists of an IP address and possibly its corresponding host name
String getHostAddress()
Returns the IP address string in textual presentation
byte[] getAddress()
Returns the raw IP address of this InetAddress object.
java.net Class Inet6Address
public final class Inet6Address extends InetAddress
preferred form is x:x:x:x:x:x:x:x, x is 16進位，16 bits
ex: 1080:0:0:0:8:800:200C:417A
public final class NetworkInterface extends Object
A Network Interface made up of a name, and a list of IP addresses assigned to this interface.
static Enumeration
Returns all the interfaces on this machine
java.net Class InetAddress
public class InetAddressextends Object implements Serializable
An instance of an InetAddress consists of an IP address and possibly its corresponding host name
String getHostAddress()
Returns the IP address string in textual presentation
byte[] getAddress()
Returns the raw IP address of this InetAddress object.
java.net Class Inet6Address
public final class Inet6Address extends InetAddress
preferred form is x:x:x:x:x:x:x:x, x is 16進位，16 bits
ex: 1080:0:0:0:8:800:200C:417A
how to get resource
1. get Class object of the class that has resource
2. if resource is image or audio , use getResource(String name) to get resource as a URL.
Then read it with getImage or getAudioClip
3. other resource use getResourceAsStream(String name) to get InputStream to read.
2. if resource is image or audio , use getResource(String name) to get resource as a URL.
Then read it with getImage or getAudioClip
3. other resource use getResourceAsStream(String name) to get InputStream to read.
property
The keys & values are strings
java.util.Properties
property file format:
key = value
ex:
Properties settings = new Properties();
settings.put("PROMPT", "$p$g");
settings.put("TEMP", "C:\\Windows\\Temp");
settings.put("CLASSPATH", "c:\\jdk\\lib;.");
settings.store(System.out, "Environment settings");
output:
#Environment settings
#Sun Jan 21 07:22:52 1996
CLASSPATH=c:\\jdk\\lib;.
TEMP=C:\\Windows\\Temp
PROMPT=$p$g
store(OutputStream out, String comments):
Writes this property list (key and element pairs) in this Properties table to the output stream
to load properties from a file:
FileInputStream in = new FileInputStream("text.properties");
settings.load(in);
use getProperty(String key) to get property
java.util.Properties
property file format:
key = value
ex:
Properties settings = new Properties();
settings.put("PROMPT", "$p$g");
settings.put("TEMP", "C:\\Windows\\Temp");
settings.put("CLASSPATH", "c:\\jdk\\lib;.");
settings.store(System.out, "Environment settings");
output:
#Environment settings
#Sun Jan 21 07:22:52 1996
CLASSPATH=c:\\jdk\\lib;.
TEMP=C:\\Windows\\Temp
PROMPT=$p$g
store(OutputStream out, String comments):
Writes this property list (key and element pairs) in this Properties table to the output stream
to load properties from a file:
FileInputStream in = new FileInputStream("text.properties");
settings.load(in);
use getProperty(String key) to get property
2008年1月22日 星期二
eclipse cvs
Synchronize with Repository
顯示本地端檔案與CVS的差異
Commit
將檔案更改送上CVS, 參考 Eclipse/CVS Commit
Update
更新本地端檔案, 參考 Eclipse/CVS Update
顯示本地端檔案與CVS的差異
Commit
將檔案更改送上CVS, 參考 Eclipse/CVS Commit
Update
更新本地端檔案, 參考 Eclipse/CVS Update
2008年1月21日 星期一
Enable hidden disk image formats in Disk Utility
defaults write com.apple.DiskUtility advanced-image-options 1
/System/Library directory
/System/Library/Extensions contains device drivers and other kernel extensions
/System/Library/Frameworks contains frameworks and shared libraries that have published API
/System/Library/PrivateFrameworks contains frameworks and shared libraries that are private to Apple
/System/Library/FileSystems contins loadable file systems
/System/Library/Frameworks contains frameworks and shared libraries that have published API
/System/Library/PrivateFrameworks contains frameworks and shared libraries that are private to Apple
/System/Library/FileSystems contins loadable file systems
mach, darwin , xnu
port: in-kernel message queue
a process can have several ports within itself, each of which can be used to wait for a message
darwin's kernel is called xnu
a process can have several ports within itself, each of which can be used to wait for a message
darwin's kernel is called xnu
2008年1月20日 星期日
2008年1月17日 星期四
文字模式
[Ctrl] + [Alt] + [F1] ~ [F6] ：文字介面登入 tty1 ~ tty6 終端機
0 - halt (系統直接關機)
1 - single user mode (單人維護模式，用在系統出問題時的維護)
2 - Multi-user, without NFS (類似底下的 runlevel 3，但無 NFS 服務)
3 - Full multi-user mode (完整的含有網路功能的純文字模式)
4 - unused (系統保留功能)
5 - X11 (與 runlevel 3 類似，但使用 X Window)
6 - reboot (重新開機)
修改/etc/inittab
開機預設的 run level 設定項目
id:3:initdefault:
0 - halt (系統直接關機)
1 - single user mode (單人維護模式，用在系統出問題時的維護)
2 - Multi-user, without NFS (類似底下的 runlevel 3，但無 NFS 服務)
3 - Full multi-user mode (完整的含有網路功能的純文字模式)
4 - unused (系統保留功能)
5 - X11 (與 runlevel 3 類似，但使用 X Window)
6 - reboot (重新開機)
修改/etc/inittab
開機預設的 run level 設定項目
id:3:initdefault:
影片. 舒服音樂會. 淳佳
台中:
望春風
http://youtube.com/watch?v=266pfx6i1Zc
慶幸有你愛我(新專輯主打歌)
http://youtube.com/watch?v=BnjizwPDiFc
有心人。有情人(和歌迷合唱)
http://youtube.com/watch?v=x5nri5r10X4
angel(英文歌)
http://youtube.com/watch?v=wg-kpoMuoso
女人們的咖啡(獨唱專輯裡的合唱版)
http://youtube.com/watch?v=U3lO4b6wwP8
約好的以後(淳佳覺得歌詞很感人的新歌)
http://youtube.com/watch?v=ePzz1jOsTr8
遇見(熊天平寫的新歌)+有一天我會
http://youtube.com/watch?v=rSxTmds28Lg
我想聽妳說(清唱)
http://youtube.com/watch?v=swqUpPRtGXg
未知的以後(清唱)
http://youtube.com/watch?v=MFPGeFQd0gQ
愛如潮水
http://youtube.com/watch?v=VEMXC3aaoRs
望春風
http://youtube.com/watch?v=266pfx6i1Zc
慶幸有你愛我(新專輯主打歌)
http://youtube.com/watch?v=BnjizwPDiFc
有心人。有情人(和歌迷合唱)
http://youtube.com/watch?v=x5nri5r10X4
angel(英文歌)
http://youtube.com/watch?v=wg-kpoMuoso
女人們的咖啡(獨唱專輯裡的合唱版)
http://youtube.com/watch?v=U3lO4b6wwP8
約好的以後(淳佳覺得歌詞很感人的新歌)
http://youtube.com/watch?v=ePzz1jOsTr8
遇見(熊天平寫的新歌)+有一天我會
http://youtube.com/watch?v=rSxTmds28Lg
我想聽妳說(清唱)
http://youtube.com/watch?v=swqUpPRtGXg
未知的以後(清唱)
http://youtube.com/watch?v=MFPGeFQd0gQ
愛如潮水
http://youtube.com/watch?v=VEMXC3aaoRs
redundant controller
LG can be assigned to the primary or secondary controller.
The I/O to drive is managed by the controller taht owns LG
If the controller owns LG fais, the I/O will be managed by another controller
The I/O to drive is managed by the controller taht owns LG
If the controller owns LG fais, the I/O will be managed by another controller
scsi channel, lun and host ID
a SCSI channel( bus) 最多可接15個drives(不包括RAID controller)
So a channel can have 15個ID
SCSI-based subsystem: 8個drives在一個drive channel上，
SATA-based subsystem:一個drive channel，一個drive
host ID is link cabinet, and the drawers are like LUNs(Logical Unit Number)
一個host ID可以有32個LUN。
Connection between RAID controllers & drives
physical location of physical drives
Mapping partitions to host ID/ LUN
So a channel can have 15個ID
SCSI-based subsystem: 8個drives在一個drive channel上，
SATA-based subsystem:一個drive channel，一個drive
host ID is link cabinet, and the drawers are like LUNs(Logical Unit Number)
一個host ID可以有32個LUN。
Connection between RAID controllers & drives
physical location of physical drives
Mapping partitions to host ID/ LUN
2008年1月16日 星期三
ioRegistryExplorer and ioreg
ioRegistryExplorer
show key/value of devices in I/O Registry in GUI mode
ioreg:
show key/value of devices in I/O Registry in command mode
ex:
hard disk in ioRegistryExplorer
IOService : Root:Macmini1,1:Macmini1,1:AppleACPIPlatformExpert:PCI0@0:AppleACPIPCI:SATA@1F,2: AppleAHCI:PRT2@2:IOAHCIDevice@0:AppleAHCIDiskDriver:IOAHCIBlockStorageDevice:
IOBlockStorageDriver:FUJITSU MHV2080BHPL Media
FUJITSU MHV2080BHPL Media
IOAHCIBlockStorageDevice
show key/value of devices in I/O Registry in GUI mode
ioreg:
show key/value of devices in I/O Registry in command mode
ex:
hard disk in ioRegistryExplorer
IOService : Root:Macmini1,1:Macmini1,1:AppleACPIPlatformExpert:PCI0@0:AppleACPIPCI:SATA@1F,2: AppleAHCI:PRT2@2:IOAHCIDevice@0:AppleAHCIDiskDriver:IOAHCIBlockStorageDevice:
IOBlockStorageDriver:FUJITSU MHV2080BHPL Media
FUJITSU MHV2080BHPL Media
IOAHCIBlockStorageDevice
mach_port_t and io_object_t
in /System/Library/Frameworks/IOKit.framework/Headers/IOTypes.h
typedef mach_port_t io_object_t;
typedef io_object_t io_iterator_t;
typedef mach_port_t io_object_t;
typedef io_object_t io_iterator_t;
scsi device type in mac
defined in /System/Library/Frameworks/IOKit.framework/Headers/scsi-commands.h
kINQUIRY_PERIPHERAL_TYPE_DirectAccessSBCDevice = 0x00,
kINQUIRY_PERIPHERAL_TYPE_SequentialAccessSSCDevice = 0x01,
kINQUIRY_PERIPHERAL_TYPE_PrinterSSCDevice = 0x02,
kINQUIRY_PERIPHERAL_TYPE_ProcessorSPCDevice = 0x03,
kINQUIRY_PERIPHERAL_TYPE_WriteOnceSBCDevice = 0x04,
kINQUIRY_PERIPHERAL_TYPE_CDROM_MMCDevice = 0x05,
kINQUIRY_PERIPHERAL_TYPE_ScannerSCSI2Device = 0x06,
kINQUIRY_PERIPHERAL_TYPE_OpticalMemorySBCDevice = 0x07,
kINQUIRY_PERIPHERAL_TYPE_MediumChangerSMCDevice = 0x08,
kINQUIRY_PERIPHERAL_TYPE_CommunicationsSSCDevice = 0x09,
/* 0x0A - 0x0B ASC IT8 Graphic Arts Prepress Devices */
kINQUIRY_PERIPHERAL_TYPE_StorageArrayControllerSCC2Device= 0x0C,
kINQUIRY_PERIPHERAL_TYPE_EnclosureServicesSESDevice = 0x0D,
kINQUIRY_PERIPHERAL_TYPE_SimplifiedDirectAccessRBCDevice = 0x0E,
kINQUIRY_PERIPHERAL_TYPE_OpticalCardReaderOCRWDevice = 0x0F,
/* 0x10 - 0x1E Reserved Device Types */
kINQUIRY_PERIPHERAL_TYPE_ObjectBasedStorageDevice = 0x11,
kINQUIRY_PERIPHERAL_TYPE_AutomationDriveInterface = 0x12,
kINQUIRY_PERIPHERAL_TYPE_WellKnownLogicalUnit = 0x1E,
kINQUIRY_PERIPHERAL_TYPE_UnknownOrNoDeviceType = 0x1F,
kINQUIRY_PERIPHERAL_TYPE_Mask = 0x1F
kINQUIRY_PERIPHERAL_TYPE_DirectAccessSBCDevice = 0x00,
kINQUIRY_PERIPHERAL_TYPE_SequentialAccessSSCDevice = 0x01,
kINQUIRY_PERIPHERAL_TYPE_PrinterSSCDevice = 0x02,
kINQUIRY_PERIPHERAL_TYPE_ProcessorSPCDevice = 0x03,
kINQUIRY_PERIPHERAL_TYPE_WriteOnceSBCDevice = 0x04,
kINQUIRY_PERIPHERAL_TYPE_CDROM_MMCDevice = 0x05,
kINQUIRY_PERIPHERAL_TYPE_ScannerSCSI2Device = 0x06,
kINQUIRY_PERIPHERAL_TYPE_OpticalMemorySBCDevice = 0x07,
kINQUIRY_PERIPHERAL_TYPE_MediumChangerSMCDevice = 0x08,
kINQUIRY_PERIPHERAL_TYPE_CommunicationsSSCDevice = 0x09,
/* 0x0A - 0x0B ASC IT8 Graphic Arts Prepress Devices */
kINQUIRY_PERIPHERAL_TYPE_StorageArrayControllerSCC2Device= 0x0C,
kINQUIRY_PERIPHERAL_TYPE_EnclosureServicesSESDevice = 0x0D,
kINQUIRY_PERIPHERAL_TYPE_SimplifiedDirectAccessRBCDevice = 0x0E,
kINQUIRY_PERIPHERAL_TYPE_OpticalCardReaderOCRWDevice = 0x0F,
/* 0x10 - 0x1E Reserved Device Types */
kINQUIRY_PERIPHERAL_TYPE_ObjectBasedStorageDevice = 0x11,
kINQUIRY_PERIPHERAL_TYPE_AutomationDriveInterface = 0x12,
kINQUIRY_PERIPHERAL_TYPE_WellKnownLogicalUnit = 0x1E,
kINQUIRY_PERIPHERAL_TYPE_UnknownOrNoDeviceType = 0x1F,
kINQUIRY_PERIPHERAL_TYPE_Mask = 0x1F
2008年1月15日 星期二
ERR_PTR and IS_ERR
defined in linux/err.h
void *ERR_PTR(long error) :
A function returning a pointer type can return an error value
long IS_ERR(const void *ptr)
test whether a returned pointer is an error code or not:
long PTR_ERR(const void *ptr)
get the actual error code
void *ERR_PTR(long error) :
A function returning a pointer type can return an error value
long IS_ERR(const void *ptr)
test whether a returned pointer is an error code or not:
long PTR_ERR(const void *ptr)
get the actual error code
2008年1月14日 星期一
2008年1月13日 星期日
i/o kit and nub
nub:
an object that defines an access point and communication channel for a phyiscal device(such as disk drive and bus) or a logical service(such as driver matcing)
I/O registry: track live(instantiated) object
I/O category: track all I/O kit classes available on the system
(1) get the i/o kit master port
use kIOMasterPortDefault ( pass kIOMasterPortDefault to the function that requires master port)
(2) create a matching dictionary:
method 1( match IOProviderClass):
ex:
CFMutableDictionaryRef myUSBMatchDictionary = NULL;
myUSBMatchDictionary = IOServiceMatching("IOUSBInterface");
find the devices with IOProviderClass = "IOUSBInterface"
method 2:
create a matching dictionary that defines which device to access
a matching directory is a CFMutableDictionaryRef object, containing a set of key-value pairs that describe device properties
use CFDictionaryCreateMutable to create. CFDictionaryCreateMutable is defined in CoreFoundation.
use CFDictionarySetValue to set property.
ex:
CFMutableDictionaryRef mySubDictionary;
mySubDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(mySubDictionary, CFSTR(kMyDevicePropertyKey),
CFSTR(kMyDevicePropertyValue));
CFMutableDictionaryRef myMatchingDictionary;
myMatchingDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(myMatchingDictionary, CFSTR(kIOPropertyMatchKey),
mySubDictionary);
(3) looking up devices in I/O registry
use IOServiceGetMatchingServices to find devices that match the passed-in matching dictionary. It suppies IOIterator object that you can use to access matching devices
an object that defines an access point and communication channel for a phyiscal device(such as disk drive and bus) or a logical service(such as driver matcing)
I/O registry: track live(instantiated) object
I/O category: track all I/O kit classes available on the system
(1) get the i/o kit master port
use kIOMasterPortDefault ( pass kIOMasterPortDefault to the function that requires master port)
(2) create a matching dictionary:
method 1( match IOProviderClass):
ex:
CFMutableDictionaryRef myUSBMatchDictionary = NULL;
myUSBMatchDictionary = IOServiceMatching("IOUSBInterface");
find the devices with IOProviderClass = "IOUSBInterface"
method 2:
create a matching dictionary that defines which device to access
a matching directory is a CFMutableDictionaryRef object, containing a set of key-value pairs that describe device properties
use CFDictionaryCreateMutable to create. CFDictionaryCreateMutable is defined in CoreFoundation.
use CFDictionarySetValue to set property.
ex:
CFMutableDictionaryRef mySubDictionary;
mySubDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(mySubDictionary, CFSTR(kMyDevicePropertyKey),
CFSTR(kMyDevicePropertyValue));
CFMutableDictionaryRef myMatchingDictionary;
myMatchingDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(myMatchingDictionary, CFSTR(kIOPropertyMatchKey),
mySubDictionary);
(3) looking up devices in I/O registry
use IOServiceGetMatchingServices to find devices that match the passed-in matching dictionary. It suppies IOIterator object that you can use to access matching devices
compile with framework
ex:
gcc -Wall diskarb_info.c -framework DiskArbitration -framework CoreFoundation
framework 種類:
Carbon, Security, CoreFoundation, Foundation, IOKit, ApplicationServices, DiskArbitration, CoreServices,
gcc -Wall diskarb_info.c -framework DiskArbitration -framework CoreFoundation
framework 種類:
Carbon, Security, CoreFoundation, Foundation, IOKit, ApplicationServices, DiskArbitration, CoreServices,
2008年1月12日 星期六
感受 .台中. 舒服音樂會. 淳佳
今天從板橋南下台中，
為了聆聽免費的音樂會，
雖然交通費花了不少，
但享受了一場十全十美的音樂會，
只恨我相機到了中途沒電，而且沒有錄影功能。
但我還是可以用文字簡單說明一下是哪十點達成十全十美。
1. 現在聽淳佳唱歌的感覺，比起cd更令人感動。
2. 淳佳唱了些其它語言的歌，例如台語的望春風，Sarah Mclanchlan的Angel。
3. 淳佳本人在現場看來比專輯上更漂亮。
4. 為淳佳伴奏的兩位吉它手的演出也讓表演更加精彩。
5. 現場有吃到飽的蛋糕，餅乾和飲料。
6. 歌迷們都很親切，彼此聊得很開心。
7. 每個人都能和淳佳"一對一"的合照。
8. 淳佳和從來沒搭配過的歌迷合唱有心人有情人，出人意料地好聽。
9. 音樂會後歌迷們和淳佳近距離的聊天。
10.最後，淳佳在現場展現平常電視上看不到的活潑的一面唷。
我想唯一不滿意的就是沒電前拍的照片都太差了，
之後有更好的活動照片或影片，
再和大家分享。
2008年1月11日 星期五
comile error in mac
problem
mac_scsi.c:1: error: stray '\239' in program
mac_scsi.c:1: error: stray '\187' in program
mac_scsi.c:1: error: stray '\191' in program
answer:
save file with Western(Mac OS Roman)
mac_scsi.c:1: error: stray '\239' in program
mac_scsi.c:1: error: stray '\187' in program
mac_scsi.c:1: error: stray '\191' in program
answer:
save file with Western(Mac OS Roman)
mac scsi
example code:
Developer/Examples/IOKit/scsi/SCSITaskLib/Authoring/UnixTool/AuthoringUnitTestUnixTool.c
IOSCSIPeripheralDeviceType00 for block storage devices such as internal disk drives
IOSCSIPeripheralDeviceType05 for multimedia devices such as CD and DVD drives
IOSCSIPeripheralDeviceType07 for magneto-optical devices
IOSCSIPeripheralDeviceType0E for reduced block command devices such as flash cards and
smart media devices
Developer/Examples/IOKit/scsi/SCSITaskLib/Authoring/UnixTool/AuthoringUnitTestUnixTool.c
IOSCSIPeripheralDeviceType00 for block storage devices such as internal disk drives
IOSCSIPeripheralDeviceType05 for multimedia devices such as CD and DVD drives
IOSCSIPeripheralDeviceType07 for magneto-optical devices
IOSCSIPeripheralDeviceType0E for reduced block command devices such as flash cards and
smart media devices
2008年1月10日 星期四
2008年1月9日 星期三
fink and install ethereal
The Fink project wants to bring the full world of Unix Open Source software to Darwin and Mac OS X
http://www.finkproject.org/
download fink
http://www.finkproject.org/download/index.php?phpLang=en
(1) install Fink 0.8.1 XYZ Installer.pkg
(2) install FinkCommander GUI application
lauch FinkCommander GUI application
(1) Source->scanpackages
(2) Source->Utilities->index
ex: install ethereal
(1) find ethereal from FinkCommander GUI application
(2) Binary->Install
(3) install AquaEthereal, which provides a convenient way to launch ethereal in Mac OSX
http://www.finkproject.org/
download fink
http://www.finkproject.org/download/index.php?phpLang=en
(1) install Fink 0.8.1 XYZ Installer.pkg
(2) install FinkCommander GUI application
lauch FinkCommander GUI application
(1) Source->scanpackages
(2) Source->Utilities->index
ex: install ethereal
(1) find ethereal from FinkCommander GUI application
(2) Binary->Install
(3) install AquaEthereal, which provides a convenient way to launch ethereal in Mac OSX
2008年1月8日 星期二
load and unload driver
cp -r test.kext /tmp
kextload -v test.kext
show loaded kernel extension
kextstat
/System/Library/Extensions/ is the standard location of kernel extensions
sudocp-R MyKEXT.kext /tmp :
使得kext的權限變成root/whale
kextload -v test.kext
show loaded kernel extension
kextstat
/System/Library/Extensions/ is the standard location of kernel extensions
sudocp-R MyKEXT.kext /tmp :
使得kext的權限變成root/whale
2008年1月7日 星期一
major number and minor number
type dev_t:
major & minor numbers are store in variable of type dev_t, which is 32bit
major & minor numbers are store in variable of type dev_t, which is 32bit
<q> and <blockquote>
<q>:
for short quotes that are part of an existing paragraph
<blockquote>:
for longer qoutes taht need to be displayed on their own
for short quotes that are part of an existing paragraph
<blockquote>:
for longer qoutes taht need to be displayed on their own
list in html
(1) put each list item in <li> element
li = list item
(2) enclouse list items with either <ol> or <ul> element
ol = ordered list
ul = unordered list
li = list item
(2) enclouse list items with either <ol> or <ul> element
ol = ordered list
ul = unordered list
pointer to function
ex: int (*comp)( void*, void*)
comp is a pointer to a function that has two void* arguments and return an int
comp is a pointer to a function that has two void* arguments and return an int
device without request queue
Some devices have no real need for a request queue. They can hande requests directly as they are generated.
However, the request queue must still be created. The queue will not be used to handle the actual requests, but it contains other infrastructure needed by the block subsystem
(1) create queue
request_queue_t *blk_alloc_queue(int gfp_mask);
(2) set up the request function
typedef int (make_request_fn) (request_queue_t *q, struct bio *bio);
(3) To arrange for your driver's function to be called
void blk_queue_make_request(request_queue_t *q, make_request_fn *func);
(4) when your driver shuts down, be sure to return the request queue to the system
void blk_put_queue(request_queue_t *queue);
However, the request queue must still be created. The queue will not be used to handle the actual requests, but it contains other infrastructure needed by the block subsystem
(1) create queue
request_queue_t *blk_alloc_queue(int gfp_mask);
(2) set up the request function
typedef int (make_request_fn) (request_queue_t *q, struct bio *bio);
(3) To arrange for your driver's function to be called
void blk_queue_make_request(request_queue_t *q, make_request_fn *func);
(4) when your driver shuts down, be sure to return the request queue to the system
void blk_put_queue(request_queue_t *queue);
request queue
represented by a pointer to struct request_queue
initialization:
request_queue_t *blk_init_queue(request_fn_proc *request_fn, spinlock_t *lock);
// request_fn is the driver's function which will process requests
remove queue
void blk_cleanup_queue(request_queue_t *q);
Note that neither of these functions is normally called if a "make request" function is being used
find the next request to process with
struct request *elv_next_request(request_queue_t *q);
a request contains a list of BIO structures. iterating through a request's BIOs
struct bio *bio;
rq_for_each_bio(bio, req) {
/* Process this BIO */
}
As your driver performs the transfers described by the BIO structures, it will need to update the kernel on its progress.
int end_that_request_first(struct request *req, int uptodate, int nsectors);
remove request from queue
void blkdev_dequeue_request(struct request *req);
void end_that_request_last(struct request *req);
initialization:
request_queue_t *blk_init_queue(request_fn_proc *request_fn, spinlock_t *lock);
// request_fn is the driver's function which will process requests
remove queue
void blk_cleanup_queue(request_queue_t *q);
Note that neither of these functions is normally called if a "make request" function is being used
find the next request to process with
struct request *elv_next_request(request_queue_t *q);
a request contains a list of BIO structures. iterating through a request's BIOs
struct bio *bio;
rq_for_each_bio(bio, req) {
/* Process this BIO */
}
As your driver performs the transfers described by the BIO structures, it will need to update the kernel on its progress.
int end_that_request_first(struct request *req, int uptodate, int nsectors);
remove request from queue
void blkdev_dequeue_request(struct request *req);
void end_that_request_last(struct request *req);
2008年1月6日 星期日
linux driver command
lsmod 顯示目前已經載入的模組清單
insmod moduleName
load module into kernel
ex: insmod hello.ko
rmmod:
remove module
insmod moduleName
load module into kernel
ex: insmod hello.ko
rmmod:
remove module
create block device driver
example: sbd( simple block driver)
ps: referenc http://lwn.net/Articles/58719/
(1) define a sturcture to represent the disk
static struct sbd_device {
unsigned long size;
spinlock_t lock;
u8 *data;
struct gendisk *gd;
} Device;
(2) disk initializtion
Device.size = nsectors*hardsect_size;
spin_lock_init(&Device.lock);
Device.data = vmalloc(Device.size);
if (Device.data == NULL)
return -ENOMEM;
(3) register with kernel( assignment of a dynamic major number (if requested), and causing the block
driver to show up in /proc/devices.)
major_num = register_blkdev(major_num, "sbd");
(4) gendisk( general disk) initializtion
Device.gd = alloc_disk(16);
Device.gd->major = major_num;
Device.gd->first_minor = 0;
Device.gd->fops = &sbd_ops;
Device.gd->private_data = &Device;
strcpy (Device.gd->disk_name, "sbd0");
set_capacity(Device.gd, nsectors*(hardsect_size/KERNEL_SECTOR_SIZE));
//The fops field is a pointer to the block_device_operations structure
//The private_data field can be used by the driver, so we stick a pointer to our sbd_device structure
(5) set up the request queue
static struct request_queue *Queue;
/* ... */
Queue = blk_init_queue(sbd_request, &Device.lock);
if (Queue == NULL)
goto out;
blk_queue_hardsect_size(Queue, hardsect_size);
Device.gd->queue = Queue;
// sbd_request is the request function
// the lock used by the driver to serialize access to internal resources is the best choice for controlling
access to the request queue as well
(6) add the disk to the system
add_disk(Device.gd);
(7) open and release( ( kept in the block_device_operations structure)
Drivers for real hardware may need to lock and unlock doors, check for media
(8) the request method
static void sbd_request(request_queue_t *q)
{
struct request *req;
while ((req = elv_next_request(q)) != NULL) {
if (! blk_fs_request(req)) {
end_request(req, 0);
continue;
}
sbd_transfer(&Device, req->sector, req->current_nr_sectors,
req->buffer, rq_data_dir(req));
end_request(req, 1);
}
}
// elv_next_request(): getting the first request in the queue. this function does not actually remove the
// request from the queue
// there can be multiple types of requests
// A nonzero return value from the blk_fs_request() macro says "this is a normal filesystem request."
// sbd_transfer(): just a memcpy() with some checking
// rq_data_dir(): A nonzero value (WRITE) indicates that this is a write request
// end_request(): finish processing of this request
(9) ioctl
int sbd_ioctl (struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
long size;
struct hd_geometry geo;
switch(cmd) {
/*
* The only command we need to interpret is HDIO_GETGEO, since
* we can't partition the drive otherwise. We have no real
* geometry, of course, so make something up.
*/
case HDIO_GETGEO:
size = Device.size*(hardsect_size/KERNEL_SECTOR_SIZE);
geo.cylinders = (size & ~0x3f) >> 6;
geo.heads = 4;
geo.sectors = 16;
geo.start = 4;
if (copy_to_user((void *) arg, &geo, sizeof(geo)))
return -EFAULT;
return 0;
}
return -ENOTTY; /* unknown command */
}
ps: referenc http://lwn.net/Articles/58719/
(1) define a sturcture to represent the disk
static struct sbd_device {
unsigned long size;
spinlock_t lock;
u8 *data;
struct gendisk *gd;
} Device;
(2) disk initializtion
Device.size = nsectors*hardsect_size;
spin_lock_init(&Device.lock);
Device.data = vmalloc(Device.size);
if (Device.data == NULL)
return -ENOMEM;
(3) register with kernel( assignment of a dynamic major number (if requested), and causing the block
driver to show up in /proc/devices.)
major_num = register_blkdev(major_num, "sbd");
(4) gendisk( general disk) initializtion
Device.gd = alloc_disk(16);
Device.gd->major = major_num;
Device.gd->first_minor = 0;
Device.gd->fops = &sbd_ops;
Device.gd->private_data = &Device;
strcpy (Device.gd->disk_name, "sbd0");
set_capacity(Device.gd, nsectors*(hardsect_size/KERNEL_SECTOR_SIZE));
//The fops field is a pointer to the block_device_operations structure
//The private_data field can be used by the driver, so we stick a pointer to our sbd_device structure
(5) set up the request queue
static struct request_queue *Queue;
/* ... */
Queue = blk_init_queue(sbd_request, &Device.lock);
if (Queue == NULL)
goto out;
blk_queue_hardsect_size(Queue, hardsect_size);
Device.gd->queue = Queue;
// sbd_request is the request function
// the lock used by the driver to serialize access to internal resources is the best choice for controlling
access to the request queue as well
(6) add the disk to the system
add_disk(Device.gd);
(7) open and release( ( kept in the block_device_operations structure)
Drivers for real hardware may need to lock and unlock doors, check for media
(8) the request method
static void sbd_request(request_queue_t *q)
{
struct request *req;
while ((req = elv_next_request(q)) != NULL) {
if (! blk_fs_request(req)) {
end_request(req, 0);
continue;
}
sbd_transfer(&Device, req->sector, req->current_nr_sectors,
req->buffer, rq_data_dir(req));
end_request(req, 1);
}
}
// elv_next_request(): getting the first request in the queue. this function does not actually remove the
// request from the queue
// there can be multiple types of requests
// A nonzero return value from the blk_fs_request() macro says "this is a normal filesystem request."
// sbd_transfer(): just a memcpy() with some checking
// rq_data_dir(): A nonzero value (WRITE) indicates that this is a write request
// end_request(): finish processing of this request
(9) ioctl
int sbd_ioctl (struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
long size;
struct hd_geometry geo;
switch(cmd) {
/*
* The only command we need to interpret is HDIO_GETGEO, since
* we can't partition the drive otherwise. We have no real
* geometry, of course, so make something up.
*/
case HDIO_GETGEO:
size = Device.size*(hardsect_size/KERNEL_SECTOR_SIZE);
geo.cylinders = (size & ~0x3f) >> 6;
geo.heads = 4;
geo.sectors = 16;
geo.start = 4;
if (copy_to_user((void *) arg, &geo, sizeof(geo)))
return -EFAULT;
return 0;
}
return -ENOTTY; /* unknown command */
}
open iscsi
start:
rcopen-iscsi start
or
service open-iscsi start
show status:
rcopen-iscsi status
connect to target
iscsiadm -m discovery -t st -p 192.168.111.11
show connected target
iscsiadm -m node [a3f400] 192.168.111.11:3260,1 iqn.2006-05.net.anything:store0
login
iscsiadm -m node -r a3f400 -l
stop open-iscsi
rcopen-iscsi stop
mount:
run iscsi daemon
/sbin/iscsid -f
loginall
iscsiadm -m node --loginall=all
rcopen-iscsi start
or
service open-iscsi start
show status:
rcopen-iscsi status
connect to target
iscsiadm -m discovery -t st -p 192.168.111.11
show connected target
iscsiadm -m node [a3f400] 192.168.111.11:3260,1 iqn.2006-05.net.anything:store0
login
iscsiadm -m node -r a3f400 -l
stop open-iscsi
rcopen-iscsi stop
mount:
run iscsi daemon
/sbin/iscsid -f
loginall
iscsiadm -m node --loginall=all
important macro
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
return variable whose type is “type” & has member “member”, the member is pointed by “ptr”
#define list_entry(ptr, type, member) \
container_of(ptr, type, member)
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
return variable whose type is “type” & has member “member”, the member is pointed by “ptr”
#define list_entry(ptr, type, member) \
container_of(ptr, type, member)
SG_IO ioctl, sg_io_hdr_t structure and to_scsi_device
evpd(enable vital product data):
the server shall return VPD specified by Page Code when evpd=1
The SG_IO ioctl permits user applications to send SCSI commands to a device
defined in /scsi/sg.h
sg_io_hdr_t structure is the main control structure for the version 3 SCSI generic driver
typedef struct sg_io_hdr
{
int interface_id; /* [i] 'S' (required) */
int dxfer_direction; /* [i] */
unsigned char cmd_len; /* [i] */
unsigned char mx_sb_len; /* [i] */
unsigned short iovec_count; /* [i] */
unsigned int dxfer_len; /* [i] */
// If 'iovec_count' is zero then this value is a pointer to user memory of at least 'dxfer_len' bytes in
// length. If there is a data
//transfer associated with the command then the data will be transferred to or from this user memory.
void * dxferp; /* [i], [*io] */
// This value points to the SCSI command to be executed. The command is assumed to be 'cmd_len'
// bytes long.
unsigned char * cmdp; /* [i], [*i] */
//This value points to user memory of at least 'mx_sb_len' bytes length where the SCSI sense buffer will
//be output. Most successful commands do not output a sense buffer and this will be indicated by
// 'sb_len_wr' being zero
unsigned char * sbp; /* [i], [*o] */
unsigned int timeout; /* [i] unit: millisecs */
unsigned int flags; /* [i] */
int pack_id; /* [i->o] */
void * usr_ptr; /* [i->o] */
unsigned char status; /* [o] */
unsigned char masked_status;/* [o] */
unsigned char msg_status; /* [o] */
unsigned char sb_len_wr; /* [o] */
unsigned short host_status; /* [o] */
unsigned short driver_status;/* [o] */
int resid; /* [o] */
unsigned int duration; /* [o] */
unsigned int info; /* [o] */
} sg_io_hdr_t; /* 64 bytes long (on i386) */
ex:
struct sg_io_hdr io_hdr;
ioctl(fd, SG_IO, &io_hdr)
in scsi_device.h
#define to_scsi_device ( d ) container_of(d, struct scsi_device, sdev_gendev)
unsigned char * cmdp;
ex: Inquiry Command: 0x12
command code:
inquiry 0x12
send diagnostic 1d
receive diagnostic results 1c
page code:
00: Supported vital product data pages
80: Unit Serial Number Page
83: Device Identification
c0: Vendor specific, Physical Device Identification
c1: Vendor specific, Logical Drive Geometry
vpd( vital projuct data) page:
ex:
unit serial number VPD page:
The PAGE LENGTH field specifies the length of the product serial number
fscanf and fgets
reading from file
#include
int fscanf(FILE *stream, const char *format, ... );
pass a FILE pointer as the first argument of fscanf. The second argument is like the first argument of scanf i.e. a string containing format specifiers. Then follows a list variable addresses so that you can store the inputted data.
#include
char * fgets ( char * str, int num, FILE * stream );
Reads characters from stream and stores them as a C string into str until (num-1) characters have been read or either a newline or a the End-of-File is reached
#include
int fscanf(FILE *stream, const char *format, ... );
pass a FILE pointer as the first argument of fscanf. The second argument is like the first argument of scanf i.e. a string containing format specifiers. Then follows a list variable addresses so that you can store the inputted data.
#include
char * fgets ( char * str, int num, FILE * stream );
Reads characters from stream and stores them as a C string into str until (num-1) characters have been read or either a newline or a the End-of-File is reached
getopt() in Linux
getopt (int argc, char **argv, const char *options)
The getopt function gets the next option argument from the argument list specified by the argv and argc arguments.
The options argument is a string that specifies the option characters that are valid for this program
The getopt function gets the next option argument from the argument list specified by the argv and argc arguments.
The options argument is a string that specifies the option characters that are valid for this program
cfdisk, mkfs, mount
cfdisk
分割disk
ex: cfdisk /dev/hdb
mkfs format disk
ex: mkfs -t vfat /dev/hdb0
mount device directory
ex: mount /dev/hda3 /mnt/disk1
mount /dev/hda3 to /mnt/disk1 directory
ex: mount -t vfat /dev/hda3 /mnt/disk1
format = vfat
分割disk
ex: cfdisk /dev/hdb
mkfs format disk
ex: mkfs -t vfat /dev/hdb0
mount device directory
ex: mount /dev/hda3 /mnt/disk1
mount /dev/hda3 to /mnt/disk1 directory
ex: mount -t vfat /dev/hda3 /mnt/disk1
format = vfat
我的software list
網路
上網: safari
BBS: AlienBBS
p2p: aMule
寫blog: blogger, iWeb
FTP: CyberDuck
VNC: Chicken of the VNC
音樂，影片
聽音樂，看影片: iTunes，QuickTime Player
看DVD: DVD Player
錄音: Audio Hijack Pro
剪接音樂: GarageBand
copy DVD to computer: MacTheRipper
圖片，投影片:
iPhoto: 管理照片
修改圖片: ImageWell
投影片: keynote
做圖: OmniGraffle Professional
工具:
螢幕亮度調整: Brightness Control
其它
計帳: MacMoney
Dictionary: MDict
Virtunal machine: Vmware Vusion
通訊: Skype
程式:
Java: JBuilder 2007
Mac程式: XCode
上網: safari
BBS: AlienBBS
p2p: aMule
寫blog: blogger, iWeb
FTP: CyberDuck
VNC: Chicken of the VNC
音樂，影片
聽音樂，看影片: iTunes，QuickTime Player
看DVD: DVD Player
錄音: Audio Hijack Pro
剪接音樂: GarageBand
copy DVD to computer: MacTheRipper
圖片，投影片:
iPhoto: 管理照片
修改圖片: ImageWell
投影片: keynote
做圖: OmniGraffle Professional
工具:
螢幕亮度調整: Brightness Control
其它
計帳: MacMoney
Dictionary: MDict
Virtunal machine: Vmware Vusion
通訊: Skype
程式:
Java: JBuilder 2007
Mac程式: XCode
淳佳的眼裡眉間
從淳佳發表第一張專輯"有心人有情人"後，
就喜歡上淳佳溫暖的聲音，
最近她發行新專輯了，
專輯名稱是"慶幸擁有.蔡淳佳"，
果然是一張適合在冬天聆聽的專輯。
整張專輯裡，
我最喜歡"眼裡眉間"這首歌，
帶點中國風的歌，
陳樂融老師填的詞，
在這裡和大家分享歌詞，
如果要聽到這首好聽的歌，
最簡單的方式就是買專輯支持一下唷!
人一別 枯萎了花蕊
茶和飯 減少了滋味
要如何 拿捏我潺潺的依戀
細細思念 不會累
＊睡不著 不如聽風吹
數星星 照亮誰家屋簷
我明白要給彼此幸福的機會
臨行的誓約 不能有缺＊
＃你放了太多愛 在我眼裡眉間
可以不用眺望天邊也能喜悅
有情人不能朝夕相對
也不會傷痛欲絕 自信的人不自憐
我放了很多愛 隨你披星戴月
好好把握這次緣分去看世界
放心我不會就此狼狽 也不會以淚洗面
我的微笑 請你帶著 一路上回味＃
就喜歡上淳佳溫暖的聲音，
最近她發行新專輯了，
專輯名稱是"慶幸擁有.蔡淳佳"，
果然是一張適合在冬天聆聽的專輯。
整張專輯裡，
我最喜歡"眼裡眉間"這首歌，
帶點中國風的歌，
陳樂融老師填的詞，
在這裡和大家分享歌詞，
如果要聽到這首好聽的歌，
最簡單的方式就是買專輯支持一下唷!
人一別 枯萎了花蕊
茶和飯 減少了滋味
要如何 拿捏我潺潺的依戀
細細思念 不會累
＊睡不著 不如聽風吹
數星星 照亮誰家屋簷
我明白要給彼此幸福的機會
臨行的誓約 不能有缺＊
＃你放了太多愛 在我眼裡眉間
可以不用眺望天邊也能喜悅
有情人不能朝夕相對
也不會傷痛欲絕 自信的人不自憐
我放了很多愛 隨你披星戴月
好好把握這次緣分去看世界
放心我不會就此狼狽 也不會以淚洗面
我的微笑 請你帶著 一路上回味＃
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