SD_BUS_MESSAGE_DUMP(3)        sd_bus_message_dump       SD_BUS_MESSAGE_DUMP(3)

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

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

DESCRIPTION
       The sd_bus_message_dump() function writes a textual representation of
       the message m to the stream f. If f is NULL, standard output (stdio)
       will be used. 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).

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";
                     };
             };

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.

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(1), sd-bus(3)

systemd 252                                             SD_BUS_MESSAGE_DUMP(3)

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