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linuxprocessposixsignalssigkill
Liran Orevi
Liran Orevi

Reputation: 4913

What is the SIGKILL permissions policy?

What is the SIGKILL permissions policy?

I assume I can't kill something of the kernel, or of some other user, while running on non-root, but I haven't found any document about this.

Upvotes: 1

Views: 892

Answers (1)

A B
A B

Reputation: 8876

From http://linux.die.net/man/2/kill :

For a process to have permission to send a signal it must either be privileged (under Linux: have the CAP_KILL capability), or the real or effective user ID of the sending process must equal the real or saved set-user-ID of the target process. In the case of SIGCONT it suffices when the sending and receiving processes belong to the same session.

Upvotes: 2

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