Hi:
It is well know that is not recomended to keep a spinlock locked during
operations that can be preempted. Some of these operations are copy_to_user,
copy_from_user.
Below is the code of the write_lock() as a sample.
340 static inline void __write_lock(rwlock_t *lock)
341{
342pr
Hi:
It is well know that is not recomended to keep a spinlock locked during
operations that can be preempted. Some of these operations are copy_to_user,
copy_from_user.
Below is the code of the write_lock() as a sample.
340 static inline void __write_lock(rwlock_t *lock)
341{
342pr
Hi:
It is well know that is not recomended to keep a spinlock locked during
operations that can be preempted. Some of these operations are copy_to_user,
copy_from_user.
Below is the code of the write_lock() as a sample.
340 static inline void __write_lock(rwlock_t *lock)
341{
342pr
I sent 3 identical emails to the list because hotmail does not acknowledge them.
I am sorry.
PAP
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Hi,
[1] is the module I wrote for intercepting the system call fork(). I have
taken the conventional way of hooking the system call. Firstly I found out
the address of the sys_call_table from the System.map. Then I used it in
the module to substitute for the original fork() with my own version of
You can access the code also from the below link.
https://gist.github.com/4634681
On Fri, Jan 25, 2013 at 6:58 PM, Paul Davies C wrote:
> Hi,
> [1] is the module I wrote for intercepting the system call fork(). I
> have taken the conventional way of hooking the system call. Firstly I found
> o
Hi Grzegorz,
To my knowledge if we try write to a read only area ,the kernel gives an
OOPS.As I stated in the question,the module does not give me any errors.I
have disabled page protections before writing to sys_call_table. I believe
that is enough to make the sys_call_table RW. What do you thi
hi:
I have to know the default mail delivery agent on my system to configure mail
client.
Is there mothod?
How mail delivery agent work for receiving mails?
thanks!
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On Fri, 2013-01-25 at 10:00 -0300, Pablo Pessolani wrote:
> Hi:
>It is well know that is not recomended to keep a spinlock locked
> during operations that can be preempted. Some of these operations are
> copy_to_user, copy_from_user.
> Below is the code of the write_lock() as a sample.
>
> 34
On Fri, 25 Jan 2013 18:58:29 +0530, Paul Davies C said:
> [1] is the module I wrote for intercepting the system call fork().
Totally skipping over the details of actually doing it - it's usually
considered a Bad Idea to hook a system call, and 98% of the time there's
a much better way to achiev
On Fri, 25 Jan 2013 09:58:42 -0300, Pablo Pessolani said:
> My question is: Is there any know consequence if I enable preemption before
> copy_to_user/copy_from user (keeping the spinlock locked) and then disable
> preemption again after the copy?
Well, at that point, you potentially have "a s
Hi all,
Are there any guides for developers new to Linux for:
* converting board files to device-tree
* porting drivers and patches from Android to current mainline?
There are a lot of ARM mobile devices out there that aren't supported by
Linux mainline and having these guides availa
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