PR_CAP_AMBIENT_IS_SET - read the ambient capability set of the calling thread

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

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NAME

PR_CAP_AMBIENT_IS_SET − read the ambient capability set 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_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, long cap, 0L, 0L);

DESCRIPTION

This call returns 1 if the capability in cap is in the ambient capability set and 0 if it is not.

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

See PR_CAP_AMBIENT(2const).

STANDARDS

Linux.

HISTORY

Linux 4.3.

SEE ALSO

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

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