PR_SET_SECUREBITS(2const)                            PR_SET_SECUREBITS(2const)

NAME
       PR_SET_SECUREBITS - set the "securebits" flags of the calling thread

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <linux/prctl.h>  /* Definition of PR_* constants */
       #include <sys/prctl.h>

       int prctl(PR_SET_SECUREBITS, unsigned long flags);

DESCRIPTION
       Set the "securebits" flags of the calling thread to the value supplied
       in flags.  See capabilities(7).

RETURN VALUE
       On success, 0 is returned.  On error, -1 is returned, and errno is set
       to indicate the error.

ERRORS
       EINVAL flags is not a valid value.

       EPERM  The caller does not have the CAP_SETPCAP capability, or tried to
              unset a "locked" flag, or tried to set a flag whose
              corresponding locked flag was set (see capabilities(7)).

STANDARDS
       Linux.

HISTORY
       Linux 2.6.26.

SEE ALSO
       prctl(2), PR_GET_SECUREBITS(2const), capabilities(7)

Linux man-pages 6.19              2026-02-08         PR_SET_SECUREBITS(2const)