使用udev自动重命名和编号nics使用udev

我写的udev规则自动重命名和编号具有特定MAC地址的网卡。使用udev自动重命名和编号nics使用udev

产生的规则应该这样做几乎相同75-persistent-net-generator.rules不（符合前3个字节网卡的MAC地址，这取决于如何此供应商的多卡安装它命名为“mycard *”，写重命名规则为70-persistent-net.rules ）。

这是多远我来直到如今

# 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

任务“部分我不明白”应该做的是重命名卡（可以说这是ETH3）如果要mycard0或它是系统中具有匹配的MAC地址mycard1等的第二张卡。

由于提前， flokra

来源

2009-10-29 flokra

如果设置了ENV {接口}为“mycard0”呼叫write_net_rules之前，它会找到第一个未使用mycardN你，写出它的规则，并返回名称在ENV {INTERFACE_NEW}中。

来源

2009-11-06 00:41:06

几乎就是这样。留下一个问题：编写的规则具有'KERNEL == mycard *'而不是'KERNEL == eth *'，因此不适用。我今天早上写了一个完整的解决方案，并在我回家时发布。 – flokra 2009-11-06 15:19:25

OK，这里是我的解决方案（我已经在Debian 5.0和Ubuntu 9.04进行了测试，所以我不知道这是否与其他发行版的udev进行的实现工作）：

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"，它设置卡片应该获得的名称以及match="$match, KERNEL==\"eth*\""位于write_mycard_rules中，这迫使udev不使用新名称覆盖已使用的内核子系统。

来源

2009-11-07 11:45:04 flokra

使用udev自动重命名和编号nics使用udev

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