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FreeBSD 11.0 - man page for cap_sandboxed (freebsd section 3)

CAP_SANDBOXED(3)					   BSD Library Functions Manual 					  CAP_SANDBOXED(3)

NAME
cap_sandboxed -- Check if in a capability mode sandbox
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/capsicum.h> #include <stdbool.h> bool cap_sandboxed(void);
DESCRIPTION
cap_sandboxed() returns true if the process is in a capability mode sandbox or false if it is not. This function is a more handy alternative to the cap_getmode(2) system call as it always succeeds, so there is no need for error checking. If the support for capability mode is not compiled into the kernel, cap_sandboxed() will always return false.
RETURN VALUES
Function cap_sandboxed() is always successful and will return either true or false.
SEE ALSO
cap_enter(2), capsicum(4)
AUTHORS
This function was implemented and manual page was written by Pawel Jakub Dawidek <pawel@dawidek.net> under sponsorship of the FreeBSD Founda- tion.
BSD
March 27, 2014 BSD