pr_cap_ambient_is_set(2const)

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>\n  /* Definition of \nPR_*\n constants */
\n#include <sys/prctl.h>

int prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, long \ncap\n, 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)