| EINVAL | op is not a valid value. |
NAME
PR_CAP_AMBIENT - read or change 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, long \nop\n, ...);DESCRIPTION
Reads or changes the ambient capability set of the calling thread, according to the value of op, which must be one of the following:
- PR_CAP_AMBIENT_RAISE
- PR_CAP_AMBIENT_LOWER
- PR_CAP_AMBIENT_IS_SET
- PR_CAP_AMBIENT_CLEAR_ALL
RETURN VALUE
On success, a nonnegative value is returned. On error, -1 is returned, and errno is set to indicate the error.
ERRORS
- EINVAL
op is not a valid value.
VERSIONS
Higher-level interfaces layered on top of the above operations are provided in the libcap(3) library in the form of cap_get_ambient(3), cap_set_ambient(3), and cap_reset_ambient(3).
STANDARDS
Linux.
HISTORY
Linux 4.3.
SEE ALSO
prctl(2), PR_CAP_AMBIENT_RAISE(2const), PR_CAP_AMBIENT_LOWER(2const), PR_CAP_AMBIENT_IS_SET(2const), PR_CAP_AMBIENT_CLEAR_ALL(2const), libcap(3), cap_get_ambient(3), cap_set_ambient(3), cap_reset_ambient(3)