51 lines
1.2 KiB
Bash
Executable File
51 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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# $Id: scull_load,v 1.4 2004/11/03 06:19:49 rubini Exp $
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module="scull"
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device="scull"
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mode="664"
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# Group: since distributions do it differently, look for wheel or use staff
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if grep -q '^staff:' /etc/group; then
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group="staff"
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else
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group="wheel"
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fi
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# invoke insmod with all arguments we got
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# and use a pathname, as insmod doesn't look in . by default
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/sbin/insmod ./$module.ko $* || exit 1
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# retrieve major number
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major=$(awk "\$2==\"$module\" {print \$1}" /proc/devices)
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# Remove stale nodes and replace them, then give gid and perms
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# Usually the script is shorter, it's scull that has several devices in it.
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echo ${device}0 $major 0
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rm -f /dev/${device}[0-3]
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mknod /dev/${device}0 c $major 0
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mknod /dev/${device}1 c $major 1
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mknod /dev/${device}2 c $major 2
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mknod /dev/${device}3 c $major 3
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ln -sf ${device}0 /dev/${device}
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chgrp $group /dev/${device}[0-3]
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chmod $mode /dev/${device}[0-3]
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#创建管道设备，测试阻塞和非阻塞功能
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rm -f /dev/${device}pipe[0-3]
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mknod /dev/${device}pipe0 c $major 4
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mknod /dev/${device}pipe1 c $major 5
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mknod /dev/${device}pipe2 c $major 6
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mknod /dev/${device}pipe3 c $major 7
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ln -sf ${device}pipe0 /dev/${device}pipe
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chgrp $group /dev/${device}pipe[0-3]
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chmod $mode /dev/${device}pipe[0-3]
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