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   sd_bus_message_dump    ( 3 )

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Имя (Name)

sd_bus_message_dump - Produce a string representation of a
       message for debugging purposes

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Синопсис (Synopsis)

#include <systemd/sd-bus.h>

       int sd_bus_message_dump(sd_bus_message *m, FILE *f,
                               uint64_t flags);

       SD_BUS_MESSAGE_DUMP_WITH_HEADER, SD_BUS_MESSAGE_DUMP_SUBTREE_ONLY

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Описание (Description)

The sd_bus_message_dump() function writes a textual
       representation of the message m to the stream f. This function is
       intended to be used for debugging purposes, and the output is
       neither stable nor designed to be machine readable.

       The flags parameter may be used to modify the output. With
       SD_BUS_MESSAGE_DUMP_WITH_HEADER, a header that specifies the
       message type and flags and some additional metadata is printed.
       When SD_BUS_MESSAGE_DUMP_SUBTREE_ONLY is not passed, the contents
       of the whole message are printed. When it is passed, only the
       current container in printed.

       Note that this function moves the read pointer of the message. It
       may be necessary to reset the position afterwards, for example
       with sd_bus_message_rewind(3).

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Примеры (Examples)

Output for a signal message (with
       SD_BUS_MESSAGE_DUMP_WITH_HEADER):

           > Type=signal  Endian=l  Flags=1  Version=1  Cookie=22
             Path=/value/a  Interface=org.freedesktop.DBus.Properties  Member=PropertiesChanged
             MESSAGE "sa{sv}as" {
                     STRING "org.freedesktop.systemd.ValueTest";
                     ARRAY "{sv}" {
                             DICT_ENTRY "sv" {
                                     STRING "Value";
                                     VARIANT "s" {
                                             STRING "object 0x1e, path /value/a";
                                     };
                             };
                     };
                     ARRAY "s" {
                             STRING "Value2";
                             STRING "AnExplicitProperty";
                     };
             };

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Возвращаемое значение (Return value)

On success, this function returns 0 or a positive integer. On
       failure, it returns a negative errno-style error code. No error
       codes are currently defined.

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Примечание (Note)

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

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Смотри также (See also)

systemd(1), sd-bus(3)

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