table of contents
| SD_BUS_CAN_SEND(3) | sd_bus_can_send | SD_BUS_CAN_SEND(3) |
NAME¶
sd_bus_can_send - Check which types can be sent over a bus object
SYNOPSIS¶
#include <systemd/sd-bus.h>
void sd_bus_can_send(sd_bus *bus, char type);
DESCRIPTION¶
sd_bus_can_send() is mostly used for checking if file descriptor passing is available on the given bus. type can be any of the SD_BUS_TYPE constants.
RETURN VALUE¶
On failure, sd_bus_can_send() returns a negative errno-style error code. If values of the given type can be sent over the given bus, it returns a positive integer. Otherwise, it returns zero.
Errors¶
Returned errors may indicate the following problems:
-ENOPKG
The bus object bus could not be resolved.
-ENOTCONN
The input parameter bus is NULL or the bus
is not connected.
-ECHILD
The bus object bus was created in a different
process.
NOTES¶
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 252 |