PR_CAP_AMBIENT(2const) PR_CAP_AMBIENT(2const)
NAME
PR_CAP_AMBIENT - read or change the ambient capability set of the call-
ing 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, long op, ...);
DESCRIPTION
Reads or changes the ambient capability set of the calling thread, ac-
cording 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 pro-
vided 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), lib-
cap(3), cap_get_ambient(3), cap_set_ambient(3), cap_reset_ambient(3)
Linux man-pages 6.9.1 2024-06-01 PR_CAP_AMBIENT(2const)
Generated by dwww version 1.16 on Tue Dec 16 04:25:54 CET 2025.