capng_get_rootid(3) — Linux manual page

CAPNG_GET_ROOTID(3)           Libcap-ng API          CAPNG_GET_ROOTID(3)

NAME

       capng_get_rootid - get namespace root id

SYNOPSIS

       #include <cap-ng.h>

       int capng_get_rootid(void);

DESCRIPTION

       capng_get_rootid gets the rootid for capabilities operations.
       This is only applicable for file system operations.

RETURN VALUE

       If the file is in the init namespace or the kernel does not
       support V3 file system capabilities, it returns
       CAPNG_UNSET_ROOTID. Otherwise it return an integer for the
       namespace root id.

SEE ALSO

       capng_get_caps_fd(3), capabilities(7)

AUTHOR

       Steve Grubb

COLOPHON

       This page is part of the libcap-ng (capabilities commands and
       library (NG)) project.  Information about the project can be
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Red Hat                         Sept 2020            CAPNG_GET_ROOTID(3)