NAME

       sd_bus_message_copy - Copy the contents of one message to another

SYNOPSIS

       #include <systemd/sd-bus.h>

       int sd_bus_message_copy(sd_bus_message *m, sd_bus_message *source, int all);

DESCRIPTION

       sd_bus_message_copy() copies the contents from message source to m. If all is false, a
       single complete type is copied (basic or container). If all is true, the contents are
       copied until the end of the currently open container or the end of source.

RETURN VALUE

       On success, this call returns true if anything was copied, and false if there was nothing
       to copy. On failure, it returns a negative errno-style error code.

   Errors
       Returned errors may indicate the following problems:

       -EINVAL
           source or m are NULL.

       -EPERM
           Message m has been sealed or source has not been sealed.

       -ESTALE
           Destination message is in invalid state.

       -ENXIO
           Destination message cannot be appended to.

       -ENOMEM
           Memory allocation failed.

NOTES

       Functions described here are available as a shared library, which can be compiled against
       and linked to with the libsystemd pkg-config(1) file.

       The code described here uses getenv(3), which is declared to be not multi-thread-safe.
       This means that the code calling the functions described here must not call setenv(3) from
       a parallel thread. It is recommended to only do calls to setenv() from an early phase of
       the program when no other threads have been started.

SEE ALSO

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