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PR_CAP_AMBIENT_RAISE(2const) — Linux manual page

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

PR_CAP_AMBIENT_RAISE(2const)PR_CAP_AMBIENT_RAISE(2const)

NAME top

       PR_CAP_AMBIENT_RAISE - add to the ambient capability set of the       calling thread

LIBRARY top

       Standard C library (libc,-lc)

SYNOPSIS top

#include <linux/prctl.h>/* Definition ofPR_*constants */#include <sys/prctl.h>int prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, longcap, 0L, 0L);

DESCRIPTION top

       The capability specified incap is added to the ambient capability       set.  The specified capability must already be present in both the       permitted and the inheritable sets of the process.  This operation       is not permitted if theSECBIT_NO_CAP_AMBIENT_RAISEsecurebit is       set.

RETURN VALUE top

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

ERRORS top

EINVALcap does not specify a valid capability.EPERMeither the capability specified incap is not present in              the process's permitted and inheritable capability sets, or              thePR_CAP_AMBIENT_LOWERsecurebit has been set.

VERSIONS top

       SeePR_CAP_AMBIENT(2const).

STANDARDS top

       Linux.

HISTORY top

       Linux 4.3.

COLOPHON top

       This page is part of theman-pages (Linux kernel and C library       user-space interface documentation) project.  Information about       the project can be found at        ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report       for this manual page, see       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.       This page was obtained from the tarball man-pages-6.15.tar.gz       fetched from       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ 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.orgLinux man-pages 6.15            2025-05-17PR_CAP_AMBIENT_RAISE(2const)

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