Re: mmap, SIGBUS, and handling it

[Mihai RUSU]

On Fri, 10 May 2002, David S. Miller wrote:

>    From: Mihai RUSU <[e-mail]>
>    Date: Fri, 10 May 2002 18:37:21 +0300 (EEST)
>
>    PS: why signal(SIGBUS,SIG_IGN) doesnt work, but a user handler its called
>    if set with signal(SIGBUS,handle_sigbus) ?
>
> How would you like the kernel to "ignore" a page fault that cannot be
> serviced?
>

You are right, its not that I want to ignore it. The problem was that I
want to handle it some way but I dont know how. If I will make a user
handler for it how can I know if its a SIGBUS from a HW error or a SIGBUS
from that write()-case. Because I have to continue serving files even
after received a SIGBUS in that write (otherwise my file server will exit
with SIGBUS and thats no good :) ).

Take for example any single process ftp/http server, they are hit by this
problem. Which solution would you recommend ? :)

----------------------------
Mihai RUSU

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