pmgetusername(3) — Linux manual page


PMGETUSERNAME(3)          Library Functions Manual          PMGETUSERNAME(3)

NAME         top

       pmGetUsername - fetch special PCP username

C SYNOPSIS         top

       #include <pcp/pmapi.h>

       int pmGetUsername(char **username)

       cc ... -lpcp

DESCRIPTION         top

       Within the Performance Co-Pilot (PCP) some applications use a special
       (non-root) username to allow access, e.g. to write log files into
       protected directories.

       pmGetUsername returns the name via username.

       The variable name PCP_USER is fetched using pmGetOptionalConfig(3).
       If this succeeds, pmGetUsername returns 1.  Otherwise.  username is
       set to the default value of pcp and pmGetUsername returns 0.

       pmGetUsername is most often used in conjunction with
       pmSetProcessIdentity(3) at process start up.

SEE ALSO         top

       PMAPI(3), pmGetOptionalConfig(3) and pmSetProcessIdentity(3).

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
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       If you have a bug report for this manual page, send it to  This page was obtained from the project's upstream
       Git repository ⟨⟩ on
       2020-09-18.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-09-18.)  If you discover any
       rendering problems in this HTML version of the page, or you believe
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       (which is not part of the original manual page), send a mail to

Performance Co-Pilot                 PCP                    PMGETUSERNAME(3)