NAME
capng_lock - lock the current process capabilities settings
SYNOPSIS
#include <cap-ng.h>
int capng_lock(void);
DESCRIPTION
capng_lock will take steps to prevent children of the current process
to regain full privileges if the uid is 0. This should be called while
possessing the CAP_SETPCAP capability in the kernel. This function will
do the following if permitted by the kernel: Set the NOROOT option on
for PR_SET_SECUREBITS, set the NOROOT_LOCKED option to on for
PR_SET_SECUREBITS, set the PR_NO_SETUID_FIXUP option on for
PR_SET_SECUREBITS, and set the PR_NO_SETUID_FIXUP_LOCKED option on for
PR_SET_SECUREBITS.
RETURN VALUE
This returns 0 on success and a negative number on failure. -1 means a
failure setting any of the PR_SET_SECUREBITS options.
SEE ALSO
capng_apply(3), prctl(2), capabilities(7)
AUTHOR
Steve Grubb