context_new, context_str, context_free, context_type_get, context_type_set, context_range_get, context_range_set,context_role_get, context_role_set, context_user_get, context_user_set - Routines to manipulate SELinux security contexts . #include <selinux/context.h> "context_t context_new(const char *" context_str ); "const char * context_str(context_t " con ); "void context_free(context_t " con ); "const char * context_type_get(context_t " con ); "const char * context_range_get(context_t " con ); "const char * context_role_get(context_t " con ); "const char * context_user_get(context_t " con ); "int context_type_set(context_t " con ", const char *" type ); "int context_range_set(context_t " con ", const char *" range ); "int context_role_set(context_t " con ", const char *" role ); "int context_user_set(context_t " con ", const char *" user ); . These functions allow an application to manipulate the fields of a security context string without requiring it to know the format of the string. context_new () returns a new context initialized to a context string. context_str () returns a pointer to the string value of the context_t , valid until the next call to context_str () or context_free () for the same context_t* . context_free () frees the storage used by a context. context_type_get (), context_range_get (), context_role_get (), \%context_user_get () get a pointer to the string value of a context component. Note: Values returned by the get functions are only valid until the next call to a set function or context_free () for the same context_t structure. context_type_set (), context_range_set (), context_role_set (), \%context_user_set () set a context component. . On failure context_*_set () functions return non-zero and 0 on success. The other functions return NULL on failure and non-NULL on success. On failure errno is set appropriately. . selinux "(8)"