checkPasswdAccess(3) -- Linux man page



security_compute_av, security_compute_create, security_compute_relabel, security_compute_user - query the SE Linux policy database in the kernel.



#include <selinux/selinux.h>
#include <selinux/flask.h>

int security_compute_av(security_context_t scon, security_context_t tcon, security_class_t tclass, access_vector_t requested, struct av_decision *avd);

int security_compute_create(security_context_t scon, security_context_t tcon, security_class_t tclass, security_context_t *newcon);

int security_compute_relabel(security_context_t scon, security_context_t tcon, security_class_t tclass, security_context_t *newcon);

int security_compute_user(security_context_t scon, const char *username, security_context_t **con);

int checkPasswdAccess(access_vector_t requested);



security_compute_av queries whether the policy permits the source context scon to access the target context tcon via class tclass with the requested access vector. See the cron source for a usage example.

security_compute_create is used to compute a context to use for labeling a new object in a particular class based on a SID pair.

security_compute_relabel is used to compute the new context to use when relabeling an object, it is used in the source and the newrole source to determine the correct label for the tty at login time, but can be used for other things.

security_compute_user is used to determine the set of user contexts that can be reached from a source context. Is mainly used by get_ordered_context_list.

checkPasswdAccess This functions is a helper functions that allows you to check for a permission in the passwd class. checkPasswdAccess uses getprevcon() for the source and target security contexts.



0 for success and on error -1 is returned.



getcon(3), getfilecon(3), get_ordered_context_list(3)