Hi,
Thank you for your help. Now I am using a wait queue instead of the semaphore,
and it works well. Thank you very much.
>I don't have asm/uaccess.h on any of my systems.
>
>On RHL 8.0 I get:
>[summer@orange summer]$ gcc -c -Wall test.c -o test
>In file included from test.c:10:
>/usr/include/linux/string.h:8:2: warning: #warning Using kernel header
>in userland!
>test.c:19:25: asm/uaccess.h: No such file or directory
>test.c: In function `ftok':
>test.c:26: storage size of `st' isn't known
>test.c:26: warning: unused variable `st'
>test.c: At top level:
>test.c:35: warning: return type defaults to `int'
>test.c: In function `init_module':
>test.c:40: warning: implicit declaration of function `sys_semget'
>test.c:44: warning: implicit declaration of function `sys_semctl'
>[summer@orange summer]$
>
>On 7.3:
>[summer@numbat summer]$ gcc -c -Wall test.c -o test
>test.c:19:25: asm/uaccess.h: No such file or directory
>[summer@numbat summer]$
>
>I think those inplicit declarations are part of the problem.
>
>
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>
>
>
>
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Jiangbo
[EMAIL PROTECTED]
2002-11-30
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