TAPSET::ERRNO(3stap) TAPSET::ERRNO(3stap)

# [NAME](#NAME)

tapset::errno - systemtap errno tapset

# [DESCRIPTION](#DESCRIPTION)

[**errno\_str**](#errno_str)

Symbolic string associated with error code

See [*function::errno\_str*(3stap)](/man/enterprise-packages/systemtap/function::errno_str.3stap)  
for details.

[**returnval**](#returnval)

Possible return value of probed function

See [*function::returnval*(3stap)](/man/enterprise-packages/systemtap/function::returnval.3stap)  
for details.

[**returnstr**](#returnstr)

Formats the return value as a string

See [*function::returnstr*(3stap)](/man/enterprise-packages/systemtap/function::returnstr.3stap)  
for details.

[**return\_str**](#return_str)

Formats the return value as a string

See [*function::return\_str*(3stap)](/man/enterprise-packages/systemtap/function::return_str.3stap)  
for details.

# [SEE ALSO](#SEE_ALSO)

[*function::errno\_str*(3stap)](/man/enterprise-packages/systemtap/function::errno_str.3stap), [*function::returnval*(3stap)](/man/enterprise-packages/systemtap/function::returnval.3stap), [*function::returnstr*(3stap)](/man/enterprise-packages/systemtap/function::returnstr.3stap), [*function::return\_str*(3stap)](/man/enterprise-packages/systemtap/function::return_str.3stap), [*stap*(1)](/man/enterprise-packages/systemtap/stap.1), [*stapprobes*(3stap)](/man/enterprise-packages/systemtap/stapprobes.3stap)

September 2026 SystemTap Tapset Reference

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Document: tapset::errno(3stap) from systemtap 5.6-r1 (Chainguard OS)
Source: https://sourceware.org/git/systemtap.git