plucky (2) PR_CAPBSET_READ.2const.gz

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NAME
       PR_CAPBSET_READ - read the calling thread's capability bounding set


LIBRARY
       Standard C library (libc, -lc)


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

       int prctl(PR_CAPBSET_READ, long cap);


DESCRIPTION
       Return  1  if the capability specified in cap is in the calling thread's capability bounding set, or 0 if
       it is not.

       The capability constants are defined in <linux/capability.h>.

       The capability bounding set dictates whether the process can receive  the  capability  through  a  file's
       permitted capability set on a subsequent call to execve(2).


RETURN VALUE
       On  success, this call returns the boolean value described above.  On error, -1 is returned, and errno is
       set to indicate the error.


ERRORS
       EINVAL cap does not specify a valid capability.


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


STANDARDS
       Linux.


HISTORY
       Linux 2.6.25.


SEE ALSO
       prctl(2), PR_CAPBSET_DROP(2const), libcap(3), cap_get_bound(3)