x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
SD_BUS_MESSAGE_REWIND(3) sd_bus_message_rewind SD_BUS_MESSAGE_REWIND(3)
NAME
sd_bus_message_rewind - Return to beginning of message or current
container
SYNOPSIS
#include <systemd/sd-bus.h>
int sd_bus_message_rewind(sd_bus_message *m, int complete);
DESCRIPTION
sd_bus_message_rewind() moves the "read pointer" in the message m to
either the beginning of the message (if complete is true) or to the
beginning of the currently open container. If no container is open,
complete has no effect.
RETURN VALUE
On success, this function returns 0 or a positive integer. The value is
zero if the current container or whole message in case no container is
open is empty, and positive otherwise. On failure, it returns a
negative errno-style error code.
Errors
Returned errors may indicate the following problems:
-EINVAL
The m parameter is NULL.
-EPERM
The message m has not been sealed.
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_read(3)
systemd 254 SD_BUS_MESSAGE_REWIND(3)
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