标签归档：devices

linux kernel定制（五）

2013 年 6 月 7 日 admin 发表回复

5 获得驱动模块的脚本
转载请注明出处[By SELinux+]

#!/bin/sh
#auth qfong.com
#site: www.selinuxplus.com www.qfong.com

export black='\033[0m'
export boldblack='\033[1;0m'
export red='\033[31m'
export boldred='\033[1;31m'
export green='\033[32m'
export boldgreen='\033[1;32m'
export yellow='\033[33m'
export boldyellow='\033[1;33m'
export blue='\033[34m'
export boldblue='\033[1;34m'
export magenta='\033[35m'
export boldmagenta='\033[1;35m'
export cyan='\033[36m'
export boldcyan='\033[1;36m'
export white='\033[37m'
export boldwhite='\033[1;37m'


cecho ()


{
local default_msg="No message passed."

message=${1:-$default_msg}	# Defaults to default message.


color=${2:-black}		# Defaults to black, if not specified.

case $color in
	black)
		 printf "$black" ;;
	boldblack)
		 printf "$boldblack" ;;
	red)
		 printf "$red" ;;
	boldred)
		 printf "$boldred" ;;
	yellow)
		 printf "$yellow" ;;
	boldyellow)
		 printf "$boldyellow" ;;
	blue)
		 printf "$blue" ;;
	boldblue)
		 printf "$boldblue" ;;
	magenta)
		 printf "$magenta" ;;
	boldmagenta)
		 printf "$boldmagenta" ;;
	cyan)
		 printf "$cyan" ;;
	boldcyan)
		 printf "$boldcyan" ;;
	white)
		 printf "$white" ;;
	boldwhite)
		 printf "$boldwhite" ;;
esac
  printf "%s"  "$message"
  tput sgr0			# Reset to normal.
  printf "$black"

return
}
cechon ()


{
local default_msg="No message passed."

message=${1:-$default_msg}	# Defaults to default message.


color=${2:-black}		# Defaults to black, if not specified.

case $color in
	black)
		 printf "$black" ;;
	boldblack)
		 printf "$boldblack" ;;
	red)
		 printf "$red" ;;
	boldred)
		 printf "$boldred" ;;
	yellow)
		 printf "$yellow" ;;
	boldyellow)
		 printf "$boldyellow" ;;
	blue)
		 printf "$blue" ;;
	boldblue)
		 printf "$boldblue" ;;
	magenta)
		 printf "$magenta" ;;
	boldmagenta)
		 printf "$boldmagenta" ;;
	cyan)
		 printf "$cyan" ;;
	boldcyan)
		 printf "$boldcyan" ;;
	white)
		 printf "$white" ;;
	boldwhite)
		 printf "$boldwhite" ;;
esac
  printf "%s\n"  "$message"
  tput sgr0			# Reset to normal.
  printf "$black"

return
}


driver()
{
if [ $# != "2" ]; then
        echo 
        cechon "Script to display the drivers and modules for a specified sysfs class device" "boldblue"
        cechon "Usage: $0 <CLASS_NAME>" "boldred"
        echo "example usage:"
        cecho  "     $0 d " "blue"
	cechon "sha" "boldmagenta"
        echo "Will show all drivers and modules for the sda block device."
        cechon "==============================================================" "white"
        exit 1
fi 


##
## for " find /sys/class -name sda "
##
DEV=$2
if test -e "$2";then
	DEVPATH=$2
else
	#find sysfs device directory for device
	DEVPATH=$(find /sys/class -name "$2" |head -1 )
	test -z "$DEVPATH" && DEVPATH=$(find /sys/block -name "$2" |head -1 )
	test -z "$DEVPATH" && DEVPATH=$(find /sys/bus -name "$2" |head -1 )
	if ! test -e "$DEVPATH";then
		cechon "No Device Found !!!" "red"
		exit 1
	fi
fi
cechon "==============================================================" "white"
        cechon "	Get Driver Tools ... " "boldred"
cechon "==============================================================" "white"
printf "Looking at sysfs devices:"
cechon "$DEVPATH" "boldmagenta"
if test -L "$DEVPATH" ;then
	# resolve class device link to device directory
	EDVPATH=$(readlink -f $DEVPATH)
	printf "Resolve link to:"
	cechon "$DEVPATH" "boldmagenta"
fi

if test -d "$DEVPATH";then
	#resolve old-style "device" loink to the parent device
	PARENT=$DEVPATH
	while test "$PARENT" != "/";do
		if test -L "$PARENT/device"; then
			DEVPATH=$(readlink -f $PARENT/device)
			printf "follow 'device' link to parent ::"
			cechon "$DEVPATH" "boldmagenta"	
			break	
		fi
		PARENT=$(dirname $PARENT)
	done
fi
	cechon "##############################################################" "white"
while test "$DEVPATH" != "/" ;do
	DRIVERPATH=
	DRIVER=
	MOUDLEPATH=
	MODULE=
	if test -e $DEVPATH/driver ;then

		DRIVERPATH=$(readlink -f $DEVPATH/driver)
		DRIVER=$(basename $DRIVERPATH)	
		printf "Found driver:"
		cechon "$DRIVER" "boldmagenta"	
		if test -e $DRIVERPATH/module; then
			MODULEPATH=$(readlink -f $DRIVERPATH/module)
			MODULE=$(basename $MODULEPATH)
			printf "Found module:"
			cechon "$MODULE" "boldmagenta"	
		fi
		cechon "--------------------------------------------------------------" "white"
		
	fi
	DEVPATH=$(dirname $DEVPATH)
done
}
modules(){
for i in `find /sys/ -name modalias -exec cat {} \;`;
do
 /sbin/modprobe --config /dev/null --show-depends $i ;
done | rev |cut -f 1 -d '/' |rev |sort -u   >/tmp/list_modules  


clear 
clear 
clear
cechon "==============================================================" "white"
        cechon "	Get Modules Tools ... " "boldred"
cechon "==============================================================" "white"
cat /tmp/list_modules
rm /tmp/list_modules
}
usages(){
        cechon "Usage: $0 <FILES> " "boldred"
        echo "example usage:"
        cecho  "     $0 " "blue"
	cechon "d|m" "boldmagenta"
        cechon "==============================================================" "white"
}

INP=$1
INF=${1:-usage}
if [[ $1 == "d" ]];then

driver $@
elif [[ $1 == "m" ]];then
modules
elif [[ $1 == "usages" ]];then
usages
else
usages
fi

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

#!/bin/sh

#auth qfong.com

#site: www.selinuxplus.com www.qfong.com

export black='\033[0m'

export boldblack='\033[1;0m'

export red='\033[31m'

export boldred='\033[1;31m'

export green='\033[32m'

export boldgreen='\033[1;32m'

export yellow='\033[33m'

export boldyellow='\033[1;33m'

export blue='\033[34m'

export boldblue='\033[1;34m'

export magenta='\033[35m'

export boldmagenta='\033[1;35m'

export cyan='\033[36m'

export boldcyan='\033[1;36m'

export white='\033[37m'

export boldwhite='\033[1;37m'

cecho ()

{

local default_msg="No message passed."

message=${1:-$default_msg} # Defaults to default message.

color=${2:-black} # Defaults to black, if not specified.

case $color in

black)

printf "$black" ;;

boldblack)

printf "$boldblack" ;;

red)

printf "$red" ;;

boldred)

printf "$boldred" ;;

yellow)

printf "$yellow" ;;

boldyellow)

printf "$boldyellow" ;;

blue)

printf "$blue" ;;

boldblue)

printf "$boldblue" ;;

magenta)

printf "$magenta" ;;

boldmagenta)

printf "$boldmagenta" ;;

cyan)

printf "$cyan" ;;

boldcyan)

printf "$boldcyan" ;;

white)

printf "$white" ;;

boldwhite)

printf "$boldwhite" ;;

esac

printf "%s" "$message"

tput sgr0 # Reset to normal.

printf "$black"

return

}

cechon ()

{

local default_msg="No message passed."

message=${1:-$default_msg} # Defaults to default message.

color=${2:-black} # Defaults to black, if not specified.

case $color in

black)

printf "$black" ;;

boldblack)

printf "$boldblack" ;;

red)

printf "$red" ;;

boldred)

printf "$boldred" ;;

yellow)

printf "$yellow" ;;

boldyellow)

printf "$boldyellow" ;;

blue)

printf "$blue" ;;

boldblue)

printf "$boldblue" ;;

magenta)

printf "$magenta" ;;

boldmagenta)

printf "$boldmagenta" ;;

cyan)

printf "$cyan" ;;

boldcyan)

printf "$boldcyan" ;;

white)

printf "$white" ;;

boldwhite)

printf "$boldwhite" ;;

esac

printf "%s\n" "$message"

tput sgr0 # Reset to normal.

printf "$black"

return

}

driver()

{

if [ $# != "2" ]; then

echo

cechon "Script to display the drivers and modules for a specified sysfs class device" "boldblue"

cechon "Usage: $0 <CLASS_NAME>" "boldred"

echo "example usage:"

cecho " $0 d " "blue"

cechon "sha" "boldmagenta"

echo "Will show all drivers and modules for the sda block device."

cechon "==============================================================" "white"

exit 1

## for " find /sys/class -name sda "

DEV=$2

if test -e "$2";then

DEVPATH=$2

else

#find sysfs device directory for device

DEVPATH=$(find /sys/class -name "$2" |head -1 )

test -z "$DEVPATH" && DEVPATH=$(find /sys/block -name "$2" |head -1 )

test -z "$DEVPATH" && DEVPATH=$(find /sys/bus -name "$2" |head -1 )

if ! test -e "$DEVPATH";then

cechon "No Device Found !!!" "red"

exit 1

cechon "==============================================================" "white"

cechon " Get Driver Tools ... " "boldred"

cechon "==============================================================" "white"

printf "Looking at sysfs devices:"

cechon "$DEVPATH" "boldmagenta"

if test -L "$DEVPATH" ;then

# resolve class device link to device directory

EDVPATH=$(readlink -f $DEVPATH)

printf "Resolve link to:"

cechon "$DEVPATH" "boldmagenta"

if test -d "$DEVPATH";then

#resolve old-style "device" loink to the parent device

PARENT=$DEVPATH

while test "$PARENT" != "/";do

if test -L "$PARENT/device"; then

DEVPATH=$(readlink -f $PARENT/device)

printf "follow 'device' link to parent ::"

cechon "$DEVPATH" "boldmagenta"

break

PARENT=$(dirname $PARENT)

done

cechon "##############################################################" "white"

while test "$DEVPATH" != "/" ;do

DRIVERPATH=

DRIVER=

MOUDLEPATH=

MODULE=

if test -e $DEVPATH/driver ;then

DRIVERPATH=$(readlink -f $DEVPATH/driver)

DRIVER=$(basename $DRIVERPATH)

printf "Found driver:"

cechon "$DRIVER" "boldmagenta"

if test -e $DRIVERPATH/module; then

MODULEPATH=$(readlink -f $DRIVERPATH/module)

MODULE=$(basename $MODULEPATH)

printf "Found module:"

cechon "$MODULE" "boldmagenta"

cechon "--------------------------------------------------------------" "white"

DEVPATH=$(dirname $DEVPATH)

done

}

modules(){

for i in `find /sys/ -name modalias -exec cat {} \;`;

/sbin/modprobe --config /dev/null --show-depends $i ;

done | rev |cut -f 1 -d '/' |rev |sort -u >/tmp/list_modules

clear

cechon "==============================================================" "white"

cechon " Get Modules Tools ... " "boldred"

cechon "==============================================================" "white"

cat /tmp/list_modules

rm /tmp/list_modules

}

usages(){

cechon "Usage: $0 <FILES> " "boldred"

echo "example usage:"

cecho " $0 " "blue"

cechon "d|m" "boldmagenta"

cechon "==============================================================" "white"

}

INP=$1

INF=${1:-usage}

if [[ $1 == "d" ]];then

driver $@

elif [[ $1 == "m" ]];then

modules

elif [[ $1 == "usages" ]];then

usages

else

usages

Kernel、系统管理

linux kernel定制（四）

2013 年 6 月 7 日 admin 发表回复

4 内核选项
内核选项这里我们主要说明驱动的选择：

Device Drivers  --->
Generic Driver Options  --->
(/sbin/hotplug) path to uevent helper
[*] Prevent firmware from being built
-*- Userspace firmware loading support
[*]   Include in-kernel firmware blobs in kernel binary
()    External firmware blobs to build into the kernel binary
[ ] Driver Core verbose debug messages
[ ] Managed device resources verbose debug messages <=== 管理设备资源的冗长调试信息，我不需要
<*> Connector - unified userspace <-> kernelspace linker  --->// 内核空间与用户空间的信道
[*]   Report process events to userspace // 报告处理时间给用户空间
< > Memory Technology Device (MTD) support  --->
< > Parallel port support  --->
-*- Plug and Play support  --->
[ ]   PNP debugging messages <=== 调试信息，
[ ] Block devices  ---> <===比如ramdisk, 磁盘阵列，CD/DVD刻录等，详见内部选项
[ ] Misc devices  ---> <=== 没有需要支持的杂项设备
< > ATA/ATAPI/MFM/RLL support  --->
SCSI device support  --->
< > RAID Transport Class
-*- SCSI device support
[] legacy /proc/scsi/ support <=== SCSI设备
*** SCSI support type (disk, tape, CD-ROM) ***
<*> SCSI disk support // 就算你用SATA，此选项也必选
< > SCSI tape support
< > SCSI OnStream SC-x0 tape support
<> SCSI CDROM support <=== SCSI设备
<> SCSI generic support <=== SCSI设备
< > SCSI media changer support
[ ] Probe all LUNs on each SCSI device
[] Verbose SCSI error reporting (kernel size +=12K) <=== SCSI设备
[ ] SCSI logging facility
[ ] Asynchronous SCSI scanning
SCSI Transports  --->
<> Parallel SCSI (SPI) Transport Attributes <=== SCSI设备
< > FiberChannel Transport Attributes
< > iSCSI Transport Attributes
< > SAS Domain Transport Attributes
< > SRP Transport Attributes
[ ] SCSI low-level drivers  --->
< > SCSI Device Handlers  --->
< > OSD-Initiator library
Serial ATA (prod) and Parallel ATA (experimental) drivers  --->
        [*]  Verbose ATA error reporting
[*]   ATA ACPI Support
[ ]   SATA Port Multiplier support <=== 我SATA设备，没有使用 多路SATA/SATA Hub 的需求。Port Multiplier是南桥芯片提供的一种支持多块SATA设备，并共享总带宽的技术。
<*>   AHCI SATA support
< >      Platform AHCI SATA support
< >      Inito 162x SATA support
< >   Silicon Image 3124/3132 SATA support
[*]   ATA SFF support // 选择自己硬件对应的驱动即可
< >     ServerWorks Frodo / Apple K2 SATA support
<*>     Intel ESB, ICH, PIIX3, PIIX4 PATA/SATA support // Intel ICH，G系列chipset driver
< >     Marvell SATA support 
< >     NVIDIA SATA support  
< >     Pacific Digital ADMA support                  
< >     Pacific Digital SATA QStor support            
< >     Promise SATA TX2/TX4 support                  
< >     Silicon Image SATA support                    
< >     SiS 964/965/966/180 SATA support              
< >     ULi Electronics SATA support                  
< >     VIA SATA support     
< >     VITESSE VSC-7174 / INTEL 31244 SATA support   
< >     Initio 162x SATA support                      
< >     ACPI firmware driver for PATA                 
< >     ALi PATA support     
< >     AMD/NVidia PATA support <=== PATA支持
< >     ARTOP 6210/6260 PATA support                  
< >     ATI PATA support     
< >     CMD64x PATA support  
< >     CS5510/5520 PATA support                      
< >     CS5530 PATA support
< >     CS5536 PATA support                            
< >     EFAR SLC90E66 support                         
< >     Generic ATA support                           
< >     HPT 366/368 PATA support                      
< >     HPT 343/363 PATA support                      
< >     IT8211/2 PATA support                         
< >     JMicron PATA support                          
< >     Compaq Triflex PATA support                   
< >     Marvell PATA support via legacy mode          
<>     Intel PATA MPIIX support <=== PATA支持
< >     Intel PATA old PIIX support <=== PATA支持
< >     NETCELL Revolution RAID support               
< >     Nat Semi NS87410 PATA support                 
< >     Nat Semi NS87415 PATA support                 
< >     Older Promise PATA controller support         
< >     PC Tech RZ1000 PATA support                   
< >     SC1200 PATA support                           
< >     SERVERWORKS OSB4/CSB5/CSB6/HT1000 PATA support
< >     Promise PATA 2027x support                     
< >     CMD / Silicon Image 680 PATA support          
< >     SiS PATA support                              
< >     VIA PATA support                              
< >     Winbond SL82C105 PATA support                 
< >     Intel SCH PATA support <=== PATA支持
[ ] Multiple devices driver support (RAID and LVM)  ---> <===（磁盘阵列）和LVM（逻辑卷管理器，添加，删除逻辑分区）的需求
[ ] Fusion MPT device support  --->
IEEE 1394 (FireWire) support  --->
< > I2O device support  --->
[ ] Macintosh device drivers  ---> <=== Mac系统硬件设备驱动， 
[*] Network device support  --->
< >   Dummy net driver support                        
< >   Bonding driver support                          
< >   EQL (serial line load balancing) support        
< >   Universal TUN/TAP device driver support         
< >   Virtual ethernet pair device                    
< >   General Instruments Surfboard 1000              
< >   ARCnet support  ---> 
-*-   PHY Device support and infrastructure  ---> <=== PHY (物理层控制芯片)  
[ ]   Ethernet (10 or 100Mbit)  ---> <=== 如果你是百 M卡，请自行选择
[*]   Ethernet (1000 Mbit)  ---> // 选择自己对应的硬件
[ ]   Ethernet (10000 Mbit)  ---> <=== 如果你是万M卡，请自行选择
<>   Token Ring driver support  ---> <=== IBM的令牌环网，用以太网的忽略
[ ]     Wireless LAN  --->  <=== 不用无线网络
      *** Enable WiMAX (Networking options) to see the WiMAX drivers *** 
      USB Network Adapters  --->           
[ ]   Wan interfaces support  --->                    
<>   FDDI driver support <=== 光纤卡驱动，相信没几个人能用上这玩意
< >   PPP (point-to-point protocol) support           
< >   SLIP (serial line) support                      
[ ]   Fibre Channel driver support
[ ]    Network console logging support
[ ]    VMware VMXNET3 ethernet driver
[ ] ISDN support  --->       
< > Telephony support  --->  
Input device support  --->
-*- Generic input layer (needed for keyboard, mouse, ...)
-*-   Support for memoryless force-feedback devices   
<>   Polled input device skeleton  <=== 一种周期性轮询硬件状态的驱动，去掉后没什么副作用
      *** Userland interfaces ***                     
-*-   Mouse interface
[ ]     Provide legacy /dev/psaux device 
(1024)  Horizontal screen resolution                  
(768)   Vertical screen resolution                    
< >   Joystick interface                              
<*>   Event interface  // 将输入设备的事件存储到/dev/input/eventX供应用程序读取
< >   Event debugging                                 
      *** Input Device Drivers ***                    
-*-   Keyboards  --->
[*]   Mice  --->                             
[]   Joysticks/Gamepads  --->  <=== 游戏设备
[]   Tablets  ---> <=== 平板PC
[]   Touchscreens  --->  <=== 触摸屏
[]   Miscellaneous devices  ---> <=== 杂七杂八的驱动，扬声器，笔记本扩展按键等
Hardware I/O ports  --->
Character devices  ---> 
-*- Virtual terminal         
[*]   Support for binding and unbinding console drivers // 在某些系统上可以使用多个控制台驱动程序(如framebuffer控制台驱动程序),该选项使得你可以选择其中之一 ，我一般只用默认的虚拟终端
[] /dev/kmem virtual device support  <=== 支持/dev/kmem设备，很少用    
[] Non-standard serial port support  <===非标准的串口设备
 Serial drivers  --->
< > 8250/16550 and compatible serial support <=== 兼容一些老式的串口设备，一般不用
    *** Non-8250 serial port support ***
< > Digi International NEO PCI Support
-*- Unix98 PTY support       
[ ]   Support multiple instances of devpts            
[ ] Legacy (BSD) PTY support 
< > IPMI top-level message handler  --->              
<*> Hardware Random Number Generator Core support     
< >   Timer IOMEM HW Random Number Generator support  
<*>   Intel HW Random Number Generator support    
<>   AMD HW Random Number Generator support  <=== AMD主板
< >   AMD Geode HW Random Number Generator support <===AMD主板
<>   VIA HW Random Number Generator support <=== VIA主板    
<> /dev/nvram support  <=== 直接存取CMOS，太危险，关
< > Siemens R3964 line discipline
< > Applicom intelligent fieldbus card support        
< > ACP Modem (Mwave) support
< > NatSemi PC8736x GPIO Support                      
< > NatSemi Base GPIO Support
< > AMD CS5535/CS5536 GPIO (Geode Companion Device)   
< > RAW driver (/dev/raw/rawN)
[*] HPET - High Precision Event Timer              
[ ]   Allow mmap of HPET     
< > Hangcheck timer
-*- I2C support  ---> // 感知硬件状态，比如温度，风扇转速
[ ] SPI support  --->        
    PPS support  --->        
[ ] GPIO Support  --->       
< > Dallas's 1-wire support  --->                     
-*- Power supply class support  --->                  
<*> Hardware Monitoring support  --->      
-*- Generic Thermal sysfs driver  --->                
[] Watchdog Timer Support  ---> <=== 系统监视程序
    Sonics Silicon Backplane  --->                    
[*]    Multifunction device drivers  --->                
[ ] Voltage and Current Regulator Support  --->       
< > Multimedia support  ---> 
Graphics support  --->
< > /dev/agpgart (AGP Support)  ---> < --- virtualbox不支持虚拟独立显卡
-*-  VGA arbitration
(16) Maximium number of GPU
[ ] Latop Hybird Graphics – GPU switch support           
<*> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)  --->
<> Lowlevel video output switch controls 
<> Support for frame buffer devices  --->
[ ] Backlight & LCD device support  --->  < --- 支持背光设置，比如pda等
    Display device support  ---> 
    Console display driver support  --->  
[ ]   Enable Scrollback Buffer in System RAM
<> Sound card support  --->  <===声卡
[] HID Devices  --->  <===人力工程学设备
[] USB support  --->  <=== 这个选项，对于跑物理机建议开启，因为有可能你的键盘是USB的， 
< > MMC/SD/SDIO card support  --->  
< > Sony MemoryStick card support (EXPERIMENTAL)  --->
[] LED Support  --->  <=== 发光二级管，应该是跟显示器相关的驱动， 
[ ] Accessibility support  --->
< > InfiniBand support  ---> 
[*] EDAC (Error Detection And Correction) reporting  ---> // 硬件故障repoting
<*> Real Time Clock  --->
[*] DMA Engine support  ---> 
[ ] Auxiliary Display support  --->                   
< > Userspace I/O drivers  --->                       
    TI VLYNQ  --->           
[ ] Staging drivers  --->    
[] X86 Platform Specific Device Drivers  ---> <=== 一些笔记本的驱动，

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

Device Drivers --->

Generic Driver Options --->

(/sbin/hotplug) path to uevent helper

[*] Prevent firmware from being built

-*- Userspace firmware loading support

[*] Include in-kernel firmware blobs in kernel binary

() External firmware blobs to build into the kernel binary

[ ] Driver Core verbose debug messages

[ ] Managed device resources verbose debug messages <=== 管理设备资源的冗长调试信息，我不需要

<*> Connector - unified userspace <-> kernelspace linker --->// 内核空间与用户空间的信道

[*] Report process events to userspace // 报告处理时间给用户空间

< > Memory Technology Device (MTD) support --->

< > Parallel port support --->

-*- Plug and Play support --->

[ ] PNP debugging messages <=== 调试信息，

[ ] Block devices ---> <===比如ramdisk, 磁盘阵列，CD/DVD刻录等，详见内部选项

[ ] Misc devices ---> <=== 没有需要支持的杂项设备

< > ATA/ATAPI/MFM/RLL support --->

SCSI device support --->

< > RAID Transport Class

-*- SCSI device support

[] legacy /proc/scsi/ support <=== SCSI设备

*** SCSI support type (disk, tape, CD-ROM) ***

<*> SCSI disk support // 就算你用SATA，此选项也必选

< > SCSI tape support

< > SCSI OnStream SC-x0 tape support

<> SCSI CDROM support <=== SCSI设备

<> SCSI generic support <=== SCSI设备

< > SCSI media changer support

[ ] Probe all LUNs on each SCSI device

[] Verbose SCSI error reporting (kernel size +=12K) <=== SCSI设备

[ ] SCSI logging facility

[ ] Asynchronous SCSI scanning

SCSI Transports --->

<> Parallel SCSI (SPI) Transport Attributes <=== SCSI设备

< > FiberChannel Transport Attributes

< > iSCSI Transport Attributes

< > SAS Domain Transport Attributes

< > SRP Transport Attributes

[ ] SCSI low-level drivers --->

< > SCSI Device Handlers --->

< > OSD-Initiator library

Serial ATA (prod) and Parallel ATA (experimental) drivers --->

[*] Verbose ATA error reporting

[*] ATA ACPI Support

[ ] SATA Port Multiplier support <=== 我SATA设备，没有使用多路SATA/SATA Hub 的需求。Port Multiplier是南桥芯片提供的一种支持多块SATA设备，并共享总带宽的技术。

<*> AHCI SATA support

< > Platform AHCI SATA support

< > Inito 162x SATA support

< > Silicon Image 3124/3132 SATA support

[*] ATA SFF support // 选择自己硬件对应的驱动即可

< > ServerWorks Frodo / Apple K2 SATA support

<*> Intel ESB, ICH, PIIX3, PIIX4 PATA/SATA support // Intel ICH，G系列chipset driver

< > Marvell SATA support

< > NVIDIA SATA support

< > Pacific Digital ADMA support

< > Pacific Digital SATA QStor support

< > Promise SATA TX2/TX4 support

< > Silicon Image SATA support

< > SiS 964/965/966/180 SATA support

< > ULi Electronics SATA support

< > VIA SATA support

< > VITESSE VSC-7174 / INTEL 31244 SATA support

< > Initio 162x SATA support

< > ACPI firmware driver for PATA

< > ALi PATA support

< > AMD/NVidia PATA support <=== PATA支持

< > ARTOP 6210/6260 PATA support

< > ATI PATA support

< > CMD64x PATA support

< > CS5510/5520 PATA support

< > CS5530 PATA support

< > CS5536 PATA support

< > EFAR SLC90E66 support

< > Generic ATA support

< > HPT 366/368 PATA support

< > HPT 343/363 PATA support

< > IT8211/2 PATA support

< > JMicron PATA support

< > Compaq Triflex PATA support

< > Marvell PATA support via legacy mode

<> Intel PATA MPIIX support <=== PATA支持

< > Intel PATA old PIIX support <=== PATA支持

< > NETCELL Revolution RAID support

< > Nat Semi NS87410 PATA support

< > Nat Semi NS87415 PATA support

< > Older Promise PATA controller support

< > PC Tech RZ1000 PATA support

< > SC1200 PATA support

< > SERVERWORKS OSB4/CSB5/CSB6/HT1000 PATA support

< > Promise PATA 2027x support

< > CMD / Silicon Image 680 PATA support

< > SiS PATA support

< > VIA PATA support

< > Winbond SL82C105 PATA support

< > Intel SCH PATA support <=== PATA支持

[ ] Multiple devices driver support (RAID and LVM) ---> <===（磁盘阵列）和LVM（逻辑卷管理器，添加，删除逻辑分区）的需求

[ ] Fusion MPT device support --->

IEEE 1394 (FireWire) support --->

< > I2O device support --->

[ ] Macintosh device drivers ---> <=== Mac系统硬件设备驱动，

[*] Network device support --->

< > Dummy net driver support

< > Bonding driver support

< > EQL (serial line load balancing) support

< > Universal TUN/TAP device driver support

< > Virtual ethernet pair device

< > General Instruments Surfboard 1000

< > ARCnet support --->

-*- PHY Device support and infrastructure ---> <=== PHY (物理层控制芯片)

[ ] Ethernet (10 or 100Mbit) ---> <=== 如果你是百 M卡，请自行选择

[*] Ethernet (1000 Mbit) ---> // 选择自己对应的硬件

[ ] Ethernet (10000 Mbit) ---> <=== 如果你是万M卡，请自行选择

<> Token Ring driver support ---> <=== IBM的令牌环网，用以太网的忽略

[ ] Wireless LAN ---> <=== 不用无线网络

*** Enable WiMAX (Networking options) to see the WiMAX drivers ***

USB Network Adapters --->

[ ] Wan interfaces support --->

<> FDDI driver support <=== 光纤卡驱动，相信没几个人能用上这玩意

< > PPP (point-to-point protocol) support

< > SLIP (serial line) support

[ ] Fibre Channel driver support

[ ] Network console logging support

[ ] VMware VMXNET3 ethernet driver

[ ] ISDN support --->

< > Telephony support --->

Input device support --->

-*- Generic input layer (needed for keyboard, mouse, ...)

-*- Support for memoryless force-feedback devices

<> Polled input device skeleton <=== 一种周期性轮询硬件状态的驱动，去掉后没什么副作用

*** Userland interfaces ***

-*- Mouse interface

[ ] Provide legacy /dev/psaux device

(1024) Horizontal screen resolution

(768) Vertical screen resolution

< > Joystick interface

<*> Event interface // 将输入设备的事件存储到/dev/input/eventX供应用程序读取

< > Event debugging

*** Input Device Drivers ***

-*- Keyboards --->

[*] Mice --->

[] Joysticks/Gamepads ---> <=== 游戏设备

[] Tablets ---> <=== 平板PC

[] Touchscreens ---> <=== 触摸屏

[] Miscellaneous devices ---> <=== 杂七杂八的驱动，扬声器，笔记本扩展按键等

Hardware I/O ports --->

Character devices --->

-*- Virtual terminal

[*] Support for binding and unbinding console drivers // 在某些系统上可以使用多个控制台驱动程序(如framebuffer控制台驱动程序),该选项使得你可以选择其中之一，我一般只用默认的虚拟终端

[] /dev/kmem virtual device support <=== 支持/dev/kmem设备，很少用

[] Non-standard serial port support <===非标准的串口设备

Serial drivers --->

< > 8250/16550 and compatible serial support <=== 兼容一些老式的串口设备，一般不用

*** Non-8250 serial port support ***

< > Digi International NEO PCI Support

-*- Unix98 PTY support

[ ] Support multiple instances of devpts

[ ] Legacy (BSD) PTY support

< > IPMI top-level message handler --->

<*> Hardware Random Number Generator Core support

< > Timer IOMEM HW Random Number Generator support

<*> Intel HW Random Number Generator support

<> AMD HW Random Number Generator support <=== AMD主板

< > AMD Geode HW Random Number Generator support <===AMD主板

<> VIA HW Random Number Generator support <=== VIA主板

<> /dev/nvram support <=== 直接存取CMOS，太危险，关

< > Siemens R3964 line discipline

< > Applicom intelligent fieldbus card support

< > ACP Modem (Mwave) support

< > NatSemi PC8736x GPIO Support

< > NatSemi Base GPIO Support

< > AMD CS5535/CS5536 GPIO (Geode Companion Device)

< > RAW driver (/dev/raw/rawN)

[*] HPET - High Precision Event Timer

[ ] Allow mmap of HPET

< > Hangcheck timer

-*- I2C support ---> // 感知硬件状态，比如温度，风扇转速

[ ] SPI support --->

PPS support --->

[ ] GPIO Support --->

< > Dallas's 1-wire support --->

-*- Power supply class support --->

<*> Hardware Monitoring support --->

-*- Generic Thermal sysfs driver --->

[] Watchdog Timer Support ---> <=== 系统监视程序

Sonics Silicon Backplane --->

[*] Multifunction device drivers --->

[ ] Voltage and Current Regulator Support --->

< > Multimedia support --->

Graphics support --->

< > /dev/agpgart (AGP Support) ---> < --- virtualbox不支持虚拟独立显卡

-*- VGA arbitration

(16) Maximium number of GPU

[ ] Latop Hybird Graphics – GPU switch support

<*> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support) --->

<> Lowlevel video output switch controls

<> Support for frame buffer devices --->

[ ] Backlight & LCD device support ---> < --- 支持背光设置，比如pda等

Display device support --->

Console display driver support --->

[ ] Enable Scrollback Buffer in System RAM

<> Sound card support ---> <===声卡

[] HID Devices ---> <===人力工程学设备

[] USB support ---> <=== 这个选项，对于跑物理机建议开启，因为有可能你的键盘是USB的，

< > MMC/SD/SDIO card support --->

< > Sony MemoryStick card support (EXPERIMENTAL) --->

[] LED Support ---> <=== 发光二级管，应该是跟显示器相关的驱动，

[ ] Accessibility support --->

< > InfiniBand support --->

[*] EDAC (Error Detection And Correction) reporting ---> // 硬件故障repoting

<*> Real Time Clock --->

[*] DMA Engine support --->

[ ] Auxiliary Display support --->

< > Userspace I/O drivers --->

TI VLYNQ --->

[ ] Staging drivers --->

[] X86 Platform Specific Device Drivers ---> <=== 一些笔记本的驱动，

如果你想了解更多的内核选项，可以参考kernel-options文件。

Kernel、系统管理

linux kernel定制（三）

2013 年 6 月 7 日 admin 发表回复

3 定制内核
转载请注明出处[By SELinux+]
我们在选择驱动中找到的2个驱动，这次我们要去实验一下。
实验环境:kernel-2.6.40.fc15内核，kernel-2.6.40是f15最新的内核。为了更好的方便使用，我们不使用前面示例中的kernel-2.6.38的内核，其框架基本一致。
1 以太网网卡驱动e1000e
2 CDROM驱动 BLK_DEV_SR
首先我们定制内核配置选项
1加载e1000e,去掉其他的网卡驱动。
2 取消CDROM驱动
下图为我们取消网卡的其他选项，仅选择Ethernet(1000Mbit)

下图为取消CDROM 支持

保存配置，进行编译

cp .config ../../../SOURCES/config-x86_64-generic
rpmbuild -bb kernel.spec

1 2	cp .config ../../../SOURCES/config-x86_64-generic rpmbuild -bb kernel.spec

编译安装后的效果如下：

[root@qfong.com ~]# uname -r

2.6.40.6-0.qf.fc15.x86_64

[root@qfong.com ~]# ping 8.8.8.8

PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_req=1 ttl=47 time=111 ms
64 bytes from 8.8.8.8: icmp_req=2 ttl=47 time=111 ms
64 bytes from 8.8.8.8: icmp_req=3 ttl=47 time=109 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 109.565/111.052/111.850/1.087 ms

[root@qfong.com ~]# ls /dev/sr

ls: cannot access /dev/sr: No such file or directory

[root@qfong.com ~]# uname -r

2.6.40.6-0.qf.fc15.x86_64

[root@qfong.com ~]# ping 8.8.8.8

PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.

64 bytes from 8.8.8.8: icmp_req=1 ttl=47 time=111 ms

64 bytes from 8.8.8.8: icmp_req=2 ttl=47 time=111 ms

64 bytes from 8.8.8.8: icmp_req=3 ttl=47 time=109 ms

--- 8.8.8.8 ping statistics ---

3 packets transmitted, 3 received, 0% packet loss, time 2003ms

rtt min/avg/max/mdev = 109.565/111.052/111.850/1.087 ms

[root@qfong.com ~]# ls /dev/sr

ls: cannot access /dev/sr: No such file or directory

我们发现sr的设备不存在了。而网络可以正常使用

Kernel、系统管理

linux kernel定制（二）

2013 年 6 月 7 日 admin 发表回复

2.2寻找磁盘控制器
转载请注明出处 [By SELinux+]
本节为来实验效果，我们将进行稍微的去掉某个驱动，以达到设备无法运行的测试效果。
所有的块设备都显示在/sys/block和/sys/class/block中

[root@qfong.com ~]# tree -d /sys/block/ |egrep "hd|sd|sr"
├── sda -> ../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda
└── sr0 -> ../devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sr0

[root@qfong.com ~]# tree -d /sys/block/ |egrep "hd|sd|sr"

├── sda -> ../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda

└── sr0 -> ../devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sr0

和之前的网络设备一样，我们这里寻找sr设备，该设备是一个cdrom，本节我们要卸载cdrom驱动。

[root@qfong.com ~]# ll /sys/block/sr0/
total 0
-r--r--r--. 1 root root 4096 Oct  9 02:14 alignment_offset
lrwxrwxrwx. 1 root root    0 Oct  9 02:14 bdi -> ../../../../../../../virtual/bdi/11:0
-r--r--r--. 1 root root 4096 Oct  9 02:14 capability
-r--r--r--. 1 root root 4096 Oct  8 20:46 dev
lrwxrwxrwx. 1 root root    0 Oct  9 02:14 device -> ../../../2:0:0:0
-r--r--r--. 1 root root 4096 Oct  9 02:14 discard_alignment
-r--r--r--. 1 root root 4096 Oct  9 02:14 events
-r--r--r--. 1 root root 4096 Oct  9 02:14 events_async
-rw-r--r--. 1 root root 4096 Oct  8 20:45 events_poll_msecs
-r--r--r--. 1 root root 4096 Oct  9 02:14 ext_range
drwxr-xr-x. 2 root root    0 Oct  8 20:46 holders
-r--r--r--. 1 root root 4096 Oct  9 02:14 inflight
drwxr-xr-x. 2 root root    0 Oct  9 01:07 power
drwxr-xr-x. 3 root root    0 Oct  8 20:46 queue
-r--r--r--. 1 root root 4096 Oct  8 20:46 range
-r--r--r--. 1 root root 4096 Oct  8 20:46 removable
-r--r--r--. 1 root root 4096 Oct  9 02:14 ro
-r--r--r--. 1 root root 4096 Oct  9 02:14 size
drwxr-xr-x. 2 root root    0 Oct  8 20:46 slaves
-r--r--r--. 1 root root 4096 Oct  9 02:14 stat
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 subsystem -> ../../../../../../../../class/block
drwxr-xr-x. 2 root root    0 Oct  9 01:07 trace
-rw-r--r--. 1 root root 4096 Oct  8 20:46 uevent

[root@qfong.com ~]# ll /sys/block/sr0/

total 0

-r--r--r--. 1 root root 4096 Oct 9 02:14 alignment_offset

lrwxrwxrwx. 1 root root 0 Oct 9 02:14 bdi -> ../../../../../../../virtual/bdi/11:0

-r--r--r--. 1 root root 4096 Oct 9 02:14 capability

-r--r--r--. 1 root root 4096 Oct 8 20:46 dev

lrwxrwxrwx. 1 root root 0 Oct 9 02:14 device -> ../../../2:0:0:0

-r--r--r--. 1 root root 4096 Oct 9 02:14 discard_alignment

-r--r--r--. 1 root root 4096 Oct 9 02:14 events

-r--r--r--. 1 root root 4096 Oct 9 02:14 events_async

-rw-r--r--. 1 root root 4096 Oct 8 20:45 events_poll_msecs

-r--r--r--. 1 root root 4096 Oct 9 02:14 ext_range

drwxr-xr-x. 2 root root 0 Oct 8 20:46 holders

-r--r--r--. 1 root root 4096 Oct 9 02:14 inflight

drwxr-xr-x. 2 root root 0 Oct 9 01:07 power

drwxr-xr-x. 3 root root 0 Oct 8 20:46 queue

-r--r--r--. 1 root root 4096 Oct 8 20:46 range

-r--r--r--. 1 root root 4096 Oct 8 20:46 removable

-r--r--r--. 1 root root 4096 Oct 9 02:14 ro

-r--r--r--. 1 root root 4096 Oct 9 02:14 size

drwxr-xr-x. 2 root root 0 Oct 8 20:46 slaves

-r--r--r--. 1 root root 4096 Oct 9 02:14 stat

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 subsystem -> ../../../../../../../../class/block

drwxr-xr-x. 2 root root 0 Oct 9 01:07 trace

-rw-r--r--. 1 root root 4096 Oct 8 20:46 uevent

我们现在沿着sysfs中的设备进行寻找这个设备驱动

[root@qfong.com sr0]#ll /sys/devices/pci0000\:00/0000\:00\:1f.2/host2/target2\:0\:0/2\:0\:0\:0/
total 0
drwxr-xr-x. 3 root root    0 Oct  8 20:46 block
drwxr-xr-x. 3 root root    0 Oct  8 20:46 bsg
--w-------. 1 root root 4096 Oct  9 02:17 delete
-r--r--r--. 1 root root 4096 Oct  9 02:17 device_blocked
-rw-r--r--. 1 root root 4096 Oct  9 02:17 dh_state
lrwxrwxrwx. 1 root root    0 Oct  9 02:17 driver -> ../../../../../../bus/scsi/drivers/sr
-r--r--r--. 1 root root 4096 Oct  8 20:46 evt_media_change
lrwxrwxrwx. 1 root root    0 Oct  9 02:17 generic -> scsi_generic/sg1
-r--r--r--. 1 root root 4096 Oct  9 02:17 iocounterbits
-r--r--r--. 1 root root 4096 Oct  9 02:17 iodone_cnt
-r--r--r--. 1 root root 4096 Oct  9 02:17 ioerr_cnt
-r--r--r--. 1 root root 4096 Oct  9 02:17 iorequest_cnt
-r--r--r--. 1 root root 4096 Oct  9 01:07 modalias
-r--r--r--. 1 root root 4096 Oct  8 20:46 model
drwxr-xr-x. 2 root root    0 Oct  9 01:07 power
-rw-r--r--. 1 root root 4096 Oct  9 02:17 queue_depth
-rw-r--r--. 1 root root 4096 Oct  9 02:17 queue_ramp_up_period
-r--r--r--. 1 root root 4096 Oct  9 02:17 queue_type
--w-------. 1 root root 4096 Oct  9 02:17 rescan
-r--r--r--. 1 root root 4096 Oct  9 02:17 rev
drwxr-xr-x. 3 root root    0 Oct  8 20:46 scsi_device
drwxr-xr-x. 3 root root    0 Oct  8 20:46 scsi_generic
-r--r--r--. 1 root root 4096 Oct  8 20:46 scsi_level
-rw-r--r--. 1 root root 4096 Oct  9 02:17 state
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 subsystem -> ../../../../../../bus/scsi
-rw-r--r--. 1 root root 4096 Oct  9 02:17 sw_activity
-rw-r--r--. 1 root root 4096 Oct  9 02:17 timeout
-r--r--r--. 1 root root 4096 Oct  8 20:46 type
-rw-r--r--. 1 root root 4096 Oct  8 20:46 uevent
-rw-r--r--. 1 root root 4096 Oct  9 02:17 unload_heads
-r--r--r--. 1 root root 4096 Oct  8 20:46 vendor

[root@qfong.com sr0]#ll /sys/devices/pci0000\:00/0000\:00\:1f.2/host2/target2\:0\:0/2\:0\:0\:0/

total 0

drwxr-xr-x. 3 root root 0 Oct 8 20:46 block

drwxr-xr-x. 3 root root 0 Oct 8 20:46 bsg

--w-------. 1 root root 4096 Oct 9 02:17 delete

-r--r--r--. 1 root root 4096 Oct 9 02:17 device_blocked

-rw-r--r--. 1 root root 4096 Oct 9 02:17 dh_state

lrwxrwxrwx. 1 root root 0 Oct 9 02:17 driver -> ../../../../../../bus/scsi/drivers/sr

-r--r--r--. 1 root root 4096 Oct 8 20:46 evt_media_change

lrwxrwxrwx. 1 root root 0 Oct 9 02:17 generic -> scsi_generic/sg1

-r--r--r--. 1 root root 4096 Oct 9 02:17 iocounterbits

-r--r--r--. 1 root root 4096 Oct 9 02:17 iodone_cnt

-r--r--r--. 1 root root 4096 Oct 9 02:17 ioerr_cnt

-r--r--r--. 1 root root 4096 Oct 9 02:17 iorequest_cnt

-r--r--r--. 1 root root 4096 Oct 9 01:07 modalias

-r--r--r--. 1 root root 4096 Oct 8 20:46 model

drwxr-xr-x. 2 root root 0 Oct 9 01:07 power

-rw-r--r--. 1 root root 4096 Oct 9 02:17 queue_depth

-rw-r--r--. 1 root root 4096 Oct 9 02:17 queue_ramp_up_period

-r--r--r--. 1 root root 4096 Oct 9 02:17 queue_type

--w-------. 1 root root 4096 Oct 9 02:17 rescan

-r--r--r--. 1 root root 4096 Oct 9 02:17 rev

drwxr-xr-x. 3 root root 0 Oct 8 20:46 scsi_device

drwxr-xr-x. 3 root root 0 Oct 8 20:46 scsi_generic

-r--r--r--. 1 root root 4096 Oct 8 20:46 scsi_level

-rw-r--r--. 1 root root 4096 Oct 9 02:17 state

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 subsystem -> ../../../../../../bus/scsi

-rw-r--r--. 1 root root 4096 Oct 9 02:17 sw_activity

-rw-r--r--. 1 root root 4096 Oct 9 02:17 timeout

-r--r--r--. 1 root root 4096 Oct 8 20:46 type

-rw-r--r--. 1 root root 4096 Oct 8 20:46 uevent

-rw-r--r--. 1 root root 4096 Oct 9 02:17 unload_heads

-r--r--r--. 1 root root 4096 Oct 8 20:46 vendor

我们看到这个scsi磁盘控制器控制着该设备，因此scsi设备是我们必须要加到我们内核配置里面的，因为scsi控制着scsi总线上的所有磁盘设备。我们主要目标是找到控制该设备的硬件驱动
接着我们继续寻找硬件的驱动
在sysfs链接中返回上一级目录，继续寻找，试着找出控制硬件的驱动

[root@qfong.com 2:0:0:0]# cd ..
[root@qfong.com target2:0:0]# ll
total 0
drwxr-xr-x. 7 root root    0 Oct  8 20:46 2:0:0:0
drwxr-xr-x. 2 root root    0 Oct  9 01:07 power
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 subsystem -> ../../../../../bus/scsi
-rw-r--r--. 1 root root 4096 Oct  8 20:46 uevent

[root@qfong.com 2:0:0:0]# cd ..

[root@qfong.com target2:0:0]# ll

total 0

drwxr-xr-x. 7 root root 0 Oct 8 20:46 2:0:0:0

drwxr-xr-x. 2 root root 0 Oct 9 01:07 power

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 subsystem -> ../../../../../bus/scsi

-rw-r--r--. 1 root root 4096 Oct 8 20:46 uevent

该目录下没有driver的链接，我们继续返回上一级目录

[root@qfong.com target2:0:0]# cd ..
[root@qfong.com host2]# ll
total 0
drwxr-xr-x. 2 root root    0 Oct  9 01:07 power
drwxr-xr-x. 3 root root    0 Oct  8 20:46 scsi_host
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 subsystem -> ../../../../bus/scsi
drwxr-xr-x. 4 root root    0 Oct  8 20:46 target2:0:0
-rw-r--r--. 1 root root 4096 Oct  8 20:46 uevent

[root@qfong.com target2:0:0]# cd ..

[root@qfong.com host2]# ll

total 0

drwxr-xr-x. 2 root root 0 Oct 9 01:07 power

drwxr-xr-x. 3 root root 0 Oct 8 20:46 scsi_host

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 subsystem -> ../../../../bus/scsi

drwxr-xr-x. 4 root root 0 Oct 8 20:46 target2:0:0

-rw-r--r--. 1 root root 4096 Oct 8 20:46 uevent

该目录下仍没有driver的链接，我们继续返回上一级目录

[root@qfong.com host2]# cd ..
[root@qfong.com 0000:00:1f.2]# ll
total 0
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata1
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata2
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata3
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata4
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata5
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata6
-rw-r--r--. 1 root root 4096 Oct  9 04:35 broken_parity_status
-r--r--r--. 1 root root 4096 Oct  8 20:46 class
-rw-r--r--. 1 root root  256 Oct  8 20:46 config
-r--r--r--. 1 root root 4096 Oct  9 04:35 consistent_dma_mask_bits
-r--r--r--. 1 root root 4096 Oct  8 20:46 device
-r--r--r--. 1 root root 4096 Oct  9 04:35 dma_mask_bits
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 driver -> ../../../bus/pci/drivers/ahci
-rw-------. 1 root root 4096 Oct  9 04:35 enable
lrwxrwxrwx. 1 root root    0 Oct  9 04:35 firmware_node -> ../../LNXSYSTM:00/device:00/PNP0A03:00/device:1f

[root@qfong.com host2]# cd ..

[root@qfong.com 0000:00:1f.2]# ll

total 0

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata1

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata2

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata3

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata4

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata5

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata6

-rw-r--r--. 1 root root 4096 Oct 9 04:35 broken_parity_status

-r--r--r--. 1 root root 4096 Oct 8 20:46 class

-rw-r--r--. 1 root root 256 Oct 8 20:46 config

-r--r--r--. 1 root root 4096 Oct 9 04:35 consistent_dma_mask_bits

-r--r--r--. 1 root root 4096 Oct 8 20:46 device

-r--r--r--. 1 root root 4096 Oct 9 04:35 dma_mask_bits

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 driver -> ../../../bus/pci/drivers/ahci

-rw-------. 1 root root 4096 Oct 9 04:35 enable

lrwxrwxrwx. 1 root root 0 Oct 9 04:35 firmware_node -> ../../LNXSYSTM:00/device:00/PNP0A03:00/device:1f

该目录下我们看到了为的驱动程序了。该驱动为 driver -> ../../../bus/pci/drivers/ahci
achi便是我们要寻找的驱动,但是achi驱动是inter芯片组的驱动，对我们来说这个驱动不是我们真正想要的，我们要分析我们的设备，cdrom是在scsi设备上的，我们要找到scsi的接口。接下来，我们继续寻找最终的驱动

[root@qfong.com linux-2.6.38.x86_64]# find -type f -name Makefile |xargs grep "ahci"
./drivers/ata/Makefile:obj-$(CONFIG_SATA_AHCI)+= ahci.o libahci.o
./drivers/ata/Makefile:obj-$(CONFIG_SATA_ACARD_AHCI)+= acard-ahci.o libahci.o
./drivers/ata/Makefile:obj-$(CONFIG_SATA_AHCI_PLATFORM)+= ahci_platform.o libahci.o

[root@qfong.com linux-2.6.38.x86_64]# find -type f -name Makefile |xargs grep "ahci"

./drivers/ata/Makefile:obj-$(CONFIG_SATA_AHCI)+= ahci.o libahci.o

./drivers/ata/Makefile:obj-$(CONFIG_SATA_ACARD_AHCI)+= acard-ahci.o libahci.o

./drivers/ata/Makefile:obj-$(CONFIG_SATA_AHCI_PLATFORM)+= ahci_platform.o libahci.o

我们回到上一层driver -> ../../../../../../bus/scsi/drivers/sr
我们看到我们的驱动指向的是sr

[root@qfong.com linux-2.6.38.x86_64]# find -type f -name "Makefile" |xargs grep  "sr" |grep "CONFIG_" |grep "scsi"
./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_SRP_ATTRS)+= scsi_transport_srp.o
./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_ARCMSR)+= arcmsr/
./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_SRP)+= libsrp.o
./drivers/scsi/Makefile:obj-$(CONFIG_BLK_DEV_SR)+= sr_mod.o
./drivers/scsi/arcmsr/Makefile:obj-$(CONFIG_SCSI_ARCMSR)：= arcmsr.o

[root@qfong.com linux-2.6.38.x86_64]# find -type f -name "Makefile" |xargs grep "sr" |grep "CONFIG_" |grep "scsi"

./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_SRP_ATTRS)+= scsi_transport_srp.o

./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_ARCMSR)+= arcmsr/

./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_SRP)+= libsrp.o

./drivers/scsi/Makefile:obj-$(CONFIG_BLK_DEV_SR)+= sr_mod.o

./drivers/scsi/arcmsr/Makefile:obj-$(CONFIG_SCSI_ARCMSR)：= arcmsr.o

我们猜想上图的sr_mod.o应该是我们所要寻找的驱动。
那么他指向的驱动为CONFIG_BLK_DEV_SR

如上图所示：我们看到来scsi CDROM 支持的选项。
当然了，寻找驱动很麻烦，我给大家准备了一个脚本，可以轻易的获得驱动。以上仅是对其分析的方法进行说明

2019年一月
一	二	三	四	五	六	日
« 十
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30	31

基础 分享 安全

基础分享安全