Samstag, 12. Juni 2010

process identifiers (pid) and namespaces

process credentials
process identifiers and namespaces

http://manpages.courier-mta.org/htmlman7/credentials.7.html

http://www.mjmwired.net/kernel/Documentation/credentials.txt

暴力小英一詞產生的正確時間、原因、反應與影響:

2008 年11月6日,蔡英文在抗議海協會會長陳雲林來台的「 圍城 」遊行中,無法管制遊行幹部與群眾[2],最終爆發流血衝突並共造成超過200人受傷,其中包含 149名警察。

「被稱為暴力小英並不可恥,為台灣人民抗暴而遭此污名,理當光榮而驕傲的接受。」

予告編 G〆ン'75  第267話~第280話
http://www.youtube.com/watch?v=l-lZ3TeGmfo&feature=related

予告編 G〆ン'75  第281話~第296話
http://www.youtube.com/watch?v=l2Y2xvyrPc0&feature=related

予告編 G〆ン'75  第281話~第296話
http://www.youtube.com/watch?v=l2Y2xvyrPc0&feature=related

予告編 G〆ン'75  第319話~第330話
http://www.youtube.com/watch?v=nyNdPxYAraY&feature=related



2 Kommentare:

Anonym hat gesagt…

file system info and filesystem information

when I browse the struct task_struct, there are 3 similar fields...

//1. file system info
int link_count, total_link_count;

. . .

//2. filesystem information
struct fs_struct *fs;

. . .

//3. open file information
struct files_struct *files;

Anyone know the differences?

At least, you have the CHOICE to take the RAD or BLUE pill. Then you take the responsibility.
Do not deceive yourself.

http://www.youtube.com/watch?v=arcJksDgCOU&feature=related

When you are detained in the police station. . .

http://www.youtube.com/watch?v=7ypZSJ2_RDY&feature=related

Anonym hat gesagt…

PID namespaces in the 2.6.24 kernel
http://lwn.net/Articles/259217/

"One of the new features in the upcoming 2.6.24 kernel will be the PID namespaces support developed by the OpenVZ team with the help of IBM. The PID namespace allows for creating sets of tasks, with each such set looking like a standalone machine with respect to process IDs. In other words, tasks in different namespaces can have the same IDs.

This feature is the major prerequisite for the migration of containers between hosts; having a namespace, one may move it to another host while keeping the PID values -- and this is a requirement since a task is not expected to change its PID. Without this feature, the migration will very likely fail, as the processes with the same IDs can exist on the destination node, which will cause conflicts when addressing tasks by their IDs.

PID namespaces are hierarchical; once a new PID namespace is created, all the tasks in the current PID namespace will see the tasks (i.e. will be able to address them with their PIDs) in this new namespace. However, tasks from the new namespace will not see the ones from the current. This means that now each task has more than one PID -- one for each namespace. "

see also : Notes from a container
http://lwn.net/Articles/256389/