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How does bash deal with signal?
From: |
Peng Yu |
Subject: |
How does bash deal with signal? |
Date: |
Wed, 24 Mar 2021 23:44:10 -0500 |
Hi,
I see sigaction() and signal() are not exactly the same. Does bash
code use sigaction() exclusively?
https://stackoverflow.com/questions/231912/what-is-the-difference-between-sigaction-and-signal
If so, I can expect all other signals will be blocked until the
current handler returns?
And there should be not a vulnerability like the following in bash?
"This means that the signal() handler must reinstall itself as its
first action. It also opens up a window of vulnerability ..."
--
Regards,
Peng
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