PROBE::SIGNAL.PROC(3stap) Signal Tapset PROBE::SIGNAL.PROC(3stap)

# [NAME](#NAME)

probe::signal.procmask - Examining or changing blocked signals

# [SYNOPSIS](#SYNOPSIS)

```
probe signal.procmask {}
```

# [VALUES](#VALUES)

*how*

Indicates how to change the blocked signals; possible values are SIG\_BLOCK=0 (for blocking signals), SIG\_UNBLOCK=1 (for unblocking signals), and SIG\_SETMASK=2 for setting the signal mask.

*name*

Name of the probe point

*sigset\_addr*

The address of the signal set (sigset\_t) to be implemented

*sigset*

The actual value to be set for sigset\_t (correct?)

*oldsigset\_addr*

The old address of the signal set (sigset\_t)

# [SEE ALSO0](#SEE_ALSO0)

[*tapset::signal*(3stap)](/man/enterprise-packages/systemtap/tapset::signal.3stap)

September 2026 SystemTap Tapset Reference Ver

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Document: probe::signal.procmask(3stap) from systemtap 5.6-r0 (Chainguard OS)
Source: https://sourceware.org/git/systemtap.git