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

       int prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, long cap, 0L, 0L);

DESCRIPTION         top

       The capability specified in cap 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 the SECBIT_NO_CAP_AMBIENT_RAISE securebit is
       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 cap does not specify a valid capability.

       EPERM  either the capability specified in cap is not present in
              the process's permitted and inheritable capability sets, or
              the PR_CAP_AMBIENT_LOWER securebit has been set.

VERSIONS         top

       See PR_CAP_AMBIENT(2const).

STANDARDS         top

       Linux.

HISTORY         top

       Linux 4.3.

SEE ALSO         top

       prctl(2), PR_CAP_AMBIENT(2const), libcap(3)

COLOPHON         top

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Linux man-pages 6.15            2025-05-17   PR_CAP_AMBIENT_RAISE(2const)

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