capng_set_rootid(3)
| CAPNG_SET_ROOTID(3) | Libcap-ng API | CAPNG_SET_ROOTID(3) |
NAME
capng_set_rootid - set namespace root id
SYNOPSIS
#include <cap-ng.h>
int capng_set_rootid(int rootid);
DESCRIPTION
capng_set_rootid sets the rootid for file capabilities operations. Pass CAPNG_UNSET_ROOTID to clear a previously selected namespace root id and go back to writing regular V2 file capabilities.
RETURN VALUE
On success, it returns 0. It returns -1 if there is an internal error, the kernel does not support V3 filesystem capabilities, or an invalid rootid is supplied.
SEE ALSO
AUTHOR
Steve Grubb
| March 2026 | Red Hat |
