Index · Directives systemd 250


sd_bus_interface_name_is_valid, sd_bus_service_name_is_valid, sd_bus_member_name_is_valid, sd_bus_object_path_is_valid — Check if a string is a valid bus name or object path


#include <systemd/sd-bus.h>
int sd_bus_interface_name_is_valid(const char* p);
int sd_bus_service_name_is_valid(const char* p);
int sd_bus_member_name_is_valid(const char* p);
int sd_bus_object_path_is_valid(const char* p);


sd_bus_interface_name_is_valid() checks if a given string p is a syntactically valid bus interface name. Similarly, sd_bus_service_name_is_valid() checks if the argument is a valid bus service name, sd_bus_member_name_is_valid() checks if the argument is a valid bus interface member name, and sd_bus_object_path_is_valid() checks if the argument is a valid bus object path. Those functions generally check that only allowed characters are used and that the length of the string is within limits.

Return Value

Those functions return 1 if the argument is a valid interface / service / member name or object path, and 0 if it is not. If the argument is NULL, an error is returned.


Returned errors may indicate the following problems:


The p parameter is NULL.


These APIs are implemented as a shared library, which can be compiled and linked to with the libsystemd pkg-config(1) file.

See Also

systemd(1), sd-bus(3), sd_bus_call_method(3)