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capng_get_rootid(3) — Linux manual page

CAPNG_GET_ROOTID(3)           Libcap-ng APICAPNG_GET_ROOTID(3)

NAME        top

       capng_get_rootid - get namespace root id

SYNOPSIS        top

#include <cap-ng.h>       int capng_get_rootid(void);

DESCRIPTION        top

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

RETURN VALUE        top

       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        top

capng_get_caps_fd(3),capabilities(7)

AUTHOR        top

       Steve Grubb

COLOPHON        top

       This page is part of thelibcap-ng (capabilities commands and       library (NG)) project.  Information about the project can be found       at ⟨https://people.redhat.com/sgrubb/libcap-ng/⟩.  It is not known       how to report bugs for this man page; if you know, please send a       mail to man-pages@man7.org.  This page was obtained from the       tarball fetched from       ⟨https://people.redhat.com/sgrubb/libcap-ng/index.html⟩ on       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 isnot       part of the original manual page), send a mail to       man-pages@man7.orgRed Hat                         Sept 2020CAPNG_GET_ROOTID(3)

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