使用udev自動重命名和編號nics使用udev

我寫的udev規則自動重命名和編號具有特定MAC地址的網卡。使用udev自動重命名和編號nics使用udev

產生的規則應該這樣做幾乎相同75-persistent-net-generator.rules不（符合前3個字節網卡的MAC地址，這取決於如何此供應商的多卡安裝它命名爲「mycard *」，寫重命名規則爲70-persistent-net.rules ）。

這是多遠我來直到如今

# udev rules to name rename cards to mycard 

ACTION!="add", GOTO="persistent_mycard_generator_end" 
SUBSYSTEM!="net", GOTO="persistent_mycard_generator_end" 

# ignore the interface if a name has already been set 
NAME=="mycard*", GOTO="persistent_mycard_generator_end" 

# device name whitelist 
KERNEL!="eth*", GOTO="persistent_mycard_generator_end" 

# read MAC address 
ENV{MATCHADDR}="$attr{address}" 

# match interface type 
ENV{MATCHIFTYPE}="$attr{type}" 

# ignore non mycard MAC addresses 
ENV{MATCHADDR}!="00:11:22:*", GOTO="persistent_mycard_generator_end" 

# default comment 
ENV{COMMENT}=="", ENV{COMMENT}="mycard connected through ($attr{driver})" 

#### THIS IS THE PART I DON'T GET #### 

# write rule 
DRIVERS=="?*", IMPORT{program}="write_net_rules" 

# rename interface if needed 
ENV{INTERFACE_NEW}=="?*", NAME="mycard*" 

#### THIS IS THE END OF THE PART I DON'T GET #### 

LABEL="persistent_mycard_generator_end

任務「部分我不明白」應該做的是重命名卡（可以說這是ETH3）如果要mycard0或它是系統中具有匹配的MAC地址mycard1等的第二張卡。

由於提前， flokra

來源

2009-10-29 flokra

如果設置了ENV {接口}爲「mycard0」呼叫write_net_rules之前，它會找到第一個未使用mycardN你，寫出它的規則，並返回名稱在ENV {INTERFACE_NEW}中。

來源

2009-11-06 00:41:06

幾乎就是這樣。留下一個問題：編寫的規則具有'KERNEL == mycard *'而不是'KERNEL == eth *'，因此不適用。我今天早上寫了一個完整的解決方案，並在我回家時發佈。 – flokra 2009-11-06 15:19:25

OK，這裏是我的解決方案（我已經在Debian 5.0和Ubuntu 9.04進行了測試，所以我不知道這是否與其他發行版的udev進行的實現工作）：

75-持久mycard-generator.rules

ACTION!="add", GOTO="persistent_mycard_generator_end" 
SUBSYSTEM!="net", GOTO="persistent_mycard_generator_end" 

# ignore the interface if a name has already been set 
NAME=="?*", GOTO="persistent_mycard_generator_end" 

# device name whitelist 
KERNEL!="eth*", GOTO="persistent_mycard_generator_end" 

# by default match on the MAC address and interface type 
ENV{MATCHADDR}="$attr{address}" 
ENV{MATCHIFTYPE}="$attr{type}" 

# match interface dev_id 
ATTR{dev_id}=="?*", ENV{MATCHDEVID}="$attr{dev_id}" 

# by default match on the MAC address and interface type 
ENV{MATCHADDR}="$attr{address}" 
ENV{MATCHIFTYPE}="$attr{type}" 

# match interface dev_id 
ATTR{dev_id}=="?*", ENV{MATCHDEVID}="$attr{dev_id}" 

# terminate processing if card is not a mycard 
ENV{MATCHADDR}!="AA:BB:CC:*", GOTO="persistent_mycard_generator_end" 

# provide nice comments for the generated rules 
SUBSYSTEMS=="pci", ENV{COMMENT}="PCI device $attr{vendor}:$attr{device}" 
SUBSYSTEMS=="pcmcia", ENV{COMMENT}="PCMCIA device $attr{card_id}:$attr{manf_id}" 
SUBSYSTEMS=="usb", ENV{COMMENT}="USB device 0x$attr{idVendor}:0x$attr{idProduct}" 
ENV{COMMENT}=="", ENV{COMMENT}="Unknown $env{SUBSYSTEM} device($env{DEVPATH})" 
ATTRS{driver}=="?*", ENV{COMMENT}="$env{COMMENT} ($attr{driver})" 

# add mycard to comment 
ENV{COMMENT}="$env{COMMENT} (mycard)" 

# set interface name to mycard0 (initially) 
ENV{INTERFACE}="mycard0" 

# generate and write the rule 
DRIVERS=="?*", IMPORT{program}="write_mycard_rules" 

# rename the interface if requested 
ENV{INTERFACE_NEW}=="?*",NAME="$env{INTERFACE_NEW}" 

LABEL="persistent_mycard_generator_end"

write_mycard_rules

RULES_FILE='/etc/udev/rules.d/70-persistent-net.rules' 

. /lib/udev/hotplug.functions 

interface_name_taken() { 
    local value="$(find_all_rules 'NAME=' $INTERFACE)" 
    if [ "$value" ]; then 
     return 0 
    fi 
    return 1 

} 

find_next_available() { 
    raw_find_next_available "$(find_all_rules 'NAME=' "$1")" 
} 

write_rule() { 
    local match="$1" 
    local name="$2" 
    local comment="$3" 

    { 
    if [ "$PRINT_HEADER" ]; then 
     PRINT_HEADER= 
     echo "# This file was automatically generated by the $0" 
     echo "# program run by the persistent-mycard-generator.rules rules file." 
     echo "#" 
     echo "# You can modify it, as long as you keep each rule on a single line." 
    fi 

    echo "" 
    [ "$comment" ] && echo "# $comment" 
    echo "SUBSYSTEM==\"net\", ACTION==\"add\"$match, NAME=\"$name\"" 
    } >> $RULES_FILE 
} 

if [ -z "$INTERFACE" ]; then 
    echo "missing \$INTERFACE" >&2 
    exit 1 
fi 

# Prevent concurrent processes from modifying the file at the same time. 
lock_rules_file 

# Check if the rules file is writeable. 
choose_rules_file 

# the DRIVERS key is needed to not match bridges and VLAN sub-interfaces 
if [ "$MATCHADDR" ]; then 
    match="$match, DRIVERS==\"?*\", ATTR{address}==\"$MATCHADDR\"" 
fi 


if [ "$MATCHDRV" ]; then 
    match="$match, DRIVERS==\"$MATCHDRV\"" 
fi 

if [ "$MATCHDEVID" ]; then 
    match="$match, ATTR{dev_id}==\"$MATCHDEVID\"" 
fi 


if [ "$MATCHID" ]; then 
    match="$match, KERNELS==\"$MATCHID\"" 
fi   

if [ "$MATCHIFTYPE" ]; then 
    match="$match, ATTR{type}==\"$MATCHIFTYPE\"" 
fi 


if [ -z "$match" ]; then 
    echo "missing valid match" >&2 
    unlock_rules_file 
    exit 1 
fi 

basename=${INTERFACE%%[0-9]*} 
match="$match, KERNEL==\"eth*\"" 
if [ "$INTERFACE_NAME" ]; then 
    # external tools may request a custom name 
    COMMENT="$COMMENT (custom name provided by external tool)" 

    if [ "$INTERFACE_NAME" != "$INTERFACE" ]; then 
     INTERFACE=$INTERFACE_NAME; 
     echo "INTERFACE_NEW=$INTERFACE" 
    fi 
else 
    # if a rule using the current name already exists, find a new name 
    if interface_name_taken; then 
     INTERFACE="$basename$(find_next_available "$basename[0-9]*")" 
     echo "INTERFACE_NEW=$INTERFACE" 
    fi 
fi 

write_rule "$match" "$INTERFACE" "$COMMENT" 
unlock_rules_file 
exit 0

75-persistent-mycard-generator.rules中最重要的更改是ENV{INTERFACE}="mycard0"，它設置卡片應該獲得的名稱以及match="$match, KERNEL==\"eth*\""位於write_mycard_rules中，這迫使udev不使用新名稱覆蓋已使用的內核子系統。

來源

2009-11-07 11:45:04 flokra

使用udev自動重命名和編號nics使用udev

回答

相關問題