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sd_bus_message_rewind(3) — Linux manual page

SD_BUS_MESSAGE_REWIND(3)  sd_bus_message_rewindSD_BUS_MESSAGE_REWIND(3)

NAME        top

       sd_bus_message_rewind - Return to beginning of message or current       container

SYNOPSIS        top

#include <systemd/sd-bus.h>int sd_bus_message_rewind(sd_bus_message *m, intcomplete);

DESCRIPTION        top

sd_bus_message_rewind()moves the "read pointer" in the messagem       to either the beginning of the message (ifcomplete is true) or to       the beginning of the currently open container. If no container is       open,complete has no effect.

RETURN VALUE        top

       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           Them parameter isNULL.-EPERM           The messagem has not been sealed.

NOTES        top

       Functions described here are available as a shared library, which       can be compiled against and linked to with thelibsystemd pkg-config(1) file.       The code described here usesgetenv(3), which is declared to be       not multi-thread-safe. This means that the code calling the       functions described here must not callsetenv(3) from a parallel       thread. It is recommended to only do calls tosetenv()from an       early phase of the program when no other threads have been       started.

HISTORY        top

sd_bus_message_rewind()was added in version 240.

SEE ALSO        top

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

COLOPHON        top

       This page is part of thesystemd (systemd system and service       manager) project.  Information about the project can be found at       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have a       bug report for this manual page, see       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.       This page was obtained from the project's upstream Git repository       ⟨https://github.com/systemd/systemd.git⟩ on 2025-08-11.  (At that       time, the date of the most recent commit that was found in the       repository was 2025-08-11.)  If you discover any rendering       problems in this HTML version of the page, or you believe there is       a better or more up-to-date source for the page, or you have       corrections or improvements to the information in this COLOPHON       (which isnot part of the original manual page), send a mail to       man-pages@man7.orgsystemd 258~rc2SD_BUS_MESSAGE_REWIND(3)

Pages that refer to this page:sd-bus(3), sd_bus_message_dump(3), systemd.directives(7), systemd.index(7)

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