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capng_have_capabilities(3)

Red Hat
Aug 2018

libcap-ng-dev

Development and header files for libcap-ng

libcap-ng

A library making programming with POSIX capabilities easier than traditional libcap

libcap-ng-devel

Header files for libcap-ng library

NAME

capng_have_capabilities, capng_have_permitted_capabilities - check for capabilities

SYNOPSIS

#include <cap-ng.h>
capng_results_t capng_have_capabilities(capng_select_t set); capng_results_t capng_have_permitted_capabilities(void);

DESCRIPTION

capng_have_capabilities will check the selected internal capabilities sets to see what the status is. The capabilities sets must be previously setup with calls to capng_get_caps_process, capng_get_caps_fd, or in some other way setup. The options are CAPNG_SELECT_CAPS for the traditional capabilities, CAPNG_SELECT_BOUNDS for the bounding set, or CAPNG_SELECT_BOTH if clearing both is desired. When capabilities are checked, it will only look at the effective capabilities.
If, however, the source of capabilities comes from a file, then you may need to additionally check the permitted capabilities. It’s for this reason that capng_have_permitted_capabilities was created. It takes no arguments because it simply checks the permitted set.

RETURN VALUE

This funtion will return one of the following four self explanatory values: CAPNG_FAIL, CAPNG_NONE, CAPNG_PARTIAL, CAPNG_FULL.

AUTHOR

Steve Grubb
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