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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | HISTORY | SEE ALSO | COLOPHON |
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SD_VAR...TIMEOUT(3) sd_varlink_set_relative_timeout SD_VAR...TIMEOUT(3)
sd_varlink_set_relative_timeout - Set method call time-out
#include <systemd/sd-varlink.h>
int sd_varlink_set_relative_timeout(sd_varlink *link,
uint64_t usec);
sd_varlink_set_relative_timeout() sets the relative timeout in µs
to enforce on Varlink method calls. A default time-out of 45s
(currently) applies, which may be changed with this call. Set to
UINT64_MAX to disable the time-out, and to 0 to revert to revert
back to the default time-out. The time-out begins whenever a
method call is started, and if no response is received by the time
the time-out elapses a synthetic io.systemd.TimedOut error is
raised as client-generated reply to the method call.
This call is particularly useful for method calls issued via
sd_varlink_observe() that shall remain open continuously for a
long time.
On success, sd_varlink_set_relative_timeout() returns a
non-negative integer. On failure, it returns a negative
errno-style error code.
Errors
Returned errors may indicate the following problems:
-EINVAL
An argument is invalid.
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.
sd_varlink_set_relative_timeout() was added in version 257.
systemd(1), sd-varlink(3)
This page is part of the systemd (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 2026-01-16. (At that
time, the date of the most recent commit that was found in the
repository was 2026-01-16.) 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 is not part of the original manual page), send a mail to
man-pages@man7.org
systemd 260~devel SD_VAR...TIMEOUT(3)
Pages that refer to this page: systemd.directives(7), systemd.index(7)
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HTML rendering created 2026-01-16 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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