echo 'hello lining' > /dev/wordcount-白红宇

echo 'hello lining' > /dev/wordcount

阅读量：2298 次

发布时间：2019-05-09

本文共 5925 字，大约阅读时间需要 19 分钟。

[root@localhost read_write]# echo 'hello lining' > /dev/wordcount

[root@localhost read_write]# cat /dev/wordcount

hello lining

[root@localhost read_write]# ./build.sh

1：Ubuntu Linux

2：S3C6410开发板

3：Android模拟器

请选择要在那类设备上运行（1）3

make: Entering directory `/home/shikun/android-git/goldfish'

LD /root/drivers/ch06/word_count/read_write/built-in.o

CC [M] /root/drivers/ch06/word_count/read_write/word_count.o

/root/drivers/ch06/word_count/read_write/word_count.c: In function 'word_count_write':

/root/drivers/ch06/word_count/read_write/word_count.c:39:16: warning: ignoring return value of 'copy_from_user', declared with attribute warn_unused_result [-Wunused-result]

/root/drivers/ch06/word_count/read_write/word_count.c: In function 'word_count_read':

/root/drivers/ch06/word_count/read_write/word_count.c:22:15: warning: ignoring return value of 'copy_to_user', declared with attribute warn_unused_result [-Wunused-result]

Building modules, stage 2.

MODPOST 1 modules

WARNING: "misc_deregister" [/root/drivers/ch06/word_count/read_write/word_count.ko] undefined!

WARNING: "misc_register" [/root/drivers/ch06/word_count/read_write/word_count.ko] undefined!

WARNING: "__copy_to_user" [/root/drivers/ch06/word_count/read_write/word_count.ko] undefined!

WARNING: "printk" [/root/drivers/ch06/word_count/read_write/word_count.ko] undefined!

WARNING: "__memzero" [/root/drivers/ch06/word_count/read_write/word_count.ko] undefined!

WARNING: "__copy_from_user" [/root/drivers/ch06/word_count/read_write/word_count.ko] undefined!

CC /root/drivers/ch06/word_count/read_write/word_count.mod.o

/root/drivers/ch06/word_count/read_write/word_count.mod.c:8:1: error: variable '__this_module' has initializer but incomplete type

/root/drivers/ch06/word_count/read_write/word_count.mod.c:9:2: error: unknown field 'name' specified in initializer

/root/drivers/ch06/word_count/read_write/word_count.mod.c:9:2: warning: excess elements in struct initializer [enabled by default]

/root/drivers/ch06/word_count/read_write/word_count.mod.c:9:2: warning: (near initialization for '__this_module') [enabled by default]

/root/drivers/ch06/word_count/read_write/word_count.mod.c:10:2: error: unknown field 'init' specified in initializer

/root/drivers/ch06/word_count/read_write/word_count.mod.c:10:2: warning: excess elements in struct initializer [enabled by default]

/root/drivers/ch06/word_count/read_write/word_count.mod.c:10:2: warning: (near initialization for '__this_module') [enabled by default]

/root/drivers/ch06/word_count/read_write/word_count.mod.c:14:2: error: unknown field 'arch' specified in initializer

/root/drivers/ch06/word_count/read_write/word_count.mod.c:14:10: error: 'MODULE_ARCH_INIT' undeclared here (not in a function)

/root/drivers/ch06/word_count/read_write/word_count.mod.c:14:2: warning: excess elements in struct initializer [enabled by default]

/root/drivers/ch06/word_count/read_write/word_count.mod.c:14:2: warning: (near initialization for '__this_module') [enabled by default]

make[1]: *** [/root/drivers/ch06/word_count/read_write/word_count.mod.o] Error 1

make: *** [modules] Error 2

make: Leaving directory `/home/shikun/android-git/goldfish'

/root/drivers/common.sh: line 35: adb: command not found

/root/drivers/common.sh: line 38: adb: command not found

[root@localhost read_write]#

========================================================================

[root@localhost read_write]# clear