1SD_BUS_GET_CURRENT_HANDLER(s3d)_bus_get_current_handlSeDr_BUS_GET_CURRENT_HANDLER(3)
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6 sd_bus_get_current_handler, sd_bus_get_current_message,
7 sd_bus_get_current_slot, sd_bus_get_current_userdata - Query
8 information of the callback a bus object is currently running
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11 #include <systemd/sd-bus.h>
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13 typedef int (*sd_bus_message_handler_t)(sd_bus_message *m,
14 void *userdata,
15 sd_bus_error *ret_error);
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17 sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus);
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19 sd_bus_message* sd_bus_get_current_message(sd_bus *bus);
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21 sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus);
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23 void* sd_bus_get_current_userdata(sd_bus *bus);
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26 Whenever sd-bus is about to invoke a user-supplied callback function,
27 it stores the current callback, D-Bus message, slot and userdata
28 pointer and allows these to be queried via
29 sd_bus_get_current_handler(), sd_bus_get_current_message(),
30 sd_bus_get_current_slot() and sd_bus_get_current_userdata(),
31 respectively. If bus cannot be resolved or if execution does not reside
32 in a user-supplied callback of bus, these functions return NULL.
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35 On success, these functions return the requested object. On failure,
36 they return NULL.
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39 These APIs are implemented as a shared library, which can be compiled
40 and linked to with the libsystemd pkg-config(1) file.
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43 systemd(1), sd-bus(3)
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47systemd 251 SD_BUS_GET_CURRENT_HANDLER(3)