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NAME | C SYNOPSIS | CAVEAT | DESCRIPTION | RETURN VALUES | SEE ALSO | COLOPHON |
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PMCHECKATTRIBUTE(3) Library Functions Manual PMCHECKATTRIBUTE(3)
__pmCheckAttribute - check value for a client connection attribute
#include "pmapi.h"
#include "libpcp.h"
int __pmCheckAttribute(__pmAttrKey attr, const char *value);
cc ... -lpcp
This documentation is intended for internal Performance Co-Pilot
(PCP) developer use.
These interfaces are not part of the PCP APIs that are guaranteed
to remain fixed across releases, and they may not work, or may
provide different semantics at some point in the future.
Connection attributes are exchanged between pmcd(1) and PCP client
tools at the start of the protocol exchange. They provide option‐
al information relating to an individual connection, such as the
name of a specific container that is under analysis by the client.
__pmCheckAttribute verifies that the given attribute attr follows
the expected syntax for that type of attribute. This assists with
the prevention of malicious content being accepted by pmcd as
these attributes may subsequently be used in parsers or carried
into structured output such as JSON format.
When presented with an unrecognised attribute or an invalid value
for the specified attribute, __pmCheckAttribute returns a negative
value suitable for reporting with pmErrStr(3). Otherwise the re‐
turn value is zero indicating success.
pmdbg(1), PMAPI(3) and pmErrStr(3).
This page is part of the PCP (Performance Co-Pilot) project. In‐
formation about the project can be found at ⟨http://www.pcp.io/⟩.
If you have a bug report for this manual page, send it to
pcp@groups.io. This page was obtained from the project's upstream
Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on
2025-08-11. (At that time, the date of the most recent commit
that was found in the repository was 2025-08-11.) If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a
mail to man-pages@man7.org
Performance Co-Pilot PCP PMCHECKATTRIBUTE(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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