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PR_CAPBSET_DROP(2const) — Linux manual page

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | VERSIONS | STANDARDS | HISTORY | SEE ALSO | COLOPHON 

PR_CAPBSET_DROP(2const)                          PR_CAPBSET_DROP(2const)

NAME         top

       PR_CAPBSET_DROP - drop a capability from the calling thread's
       capability bounding set

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

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

       int prctl(PR_CAPBSET_DROP, long cap);

DESCRIPTION         top

       Drop the capability specified by cap from the calling thread's
       capability bounding set.  Any children of the calling thread will
       inherit the newly reduced bounding set.

RETURN VALUE         top

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

ERRORS         top

       EINVAL File capabilities are not enabled in the kernel.

       EINVAL cap does not specify a valid capability.

       EPERM  The caller does not have the CAP_SETPCAP capability.

VERSIONS         top

       A higher-level interface layered on top of this operation is
       provided in the libcap(3) library in the form of
       cap_drop_bound(3).

STANDARDS         top

       Linux.

HISTORY         top

       Linux 2.6.25.

SEE ALSO         top

       prctl(2), PR_CAPBSET_READ(2const) libcap(3), cap_drop_bound(3)

COLOPHON         top

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Linux man-pages 6.9.1          2024-06-02        PR_CAPBSET_DROP(2const)

Pages that refer to this page: PR_CAPBSET_READ(2const),  prctl(2)

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