Bug #2420: Use pthread_sigmask instead of sigprogmask for signal handling - Suricata - Open Information Security Foundation

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Bug #2420

closed

Use pthread_sigmask instead of sigprogmask for signal handling

Added by Maurizio Abba almost 7 years ago. Updated almost 7 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Maurizio Abba

Target version:

4.1beta1

Affected Versions:

Effort:

Difficulty:

Label:

Description

According to http://man7.org/linux/man-pages/man2/sigprocmask.2.html sigprogmask behavior is undefined in multithreaded environment. It should be substituted by phtread_sigmask.

Furthermore, instead of blocking the handling of SIGUSR2 after the starting of each function, we can just block handling before starting the various threads and re-enabling it afterward. In this way, only the main thread will be able to react to sig USR2