Re: [systemd-devel] Scheme bindings
On Fri, Nov 20, 2015 at 01:53:02PM +0100, Jan Synacek wrote: > Zbigniew Jędrzejewski-Szmekwrites: > > > On Fri, Nov 13, 2015 at 09:27:17AM +0100, Jan Synáček wrote: > >> Hello, > >> > >> if anybody lurking here and hacking on systemd also likes scheme, I > >> created bindings for GNU Guile [1]. The API is far from covered, but > >> journal API and sd_listen* stuff is usable. You can now write socket > >> activated services in scheme! > >> > >> [1] https://github.com/jsynacek/guile-systemd > > > > Hi, > > > > when you construct a list like this, do you have normal or reverse order: > > for (i = 0; i < r; i++) > >s_fds = scm_cons(scm_from_int(SD_LISTEN_FDS_START+i), s_fds); > > ? > > Good catch, it's reversed. But, does it really matter in practice? Sure. Positions of sockets passed by systemd are stable if they come from the same socket unit, so you can distinguish otherwise identical sockets by number. > > return sd_booted() ? SCM_BOOL_T : SCM_BOOL_F; > > → sd_booted can return negative for error. > > _public_ int sd_booted(void) { > return laccess("/run/systemd/system/", F_OK) >= 0; > } > > This returns a "boolean" value. I'm not really sure why it would return > anything else. But, the documentation indeed says that it can return > negative values when it fails. It currently doesn't, but the bindings are written to a public api, not the implementation. Maybe sd_booted() should be documented to never return an error. Zbyszek ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] Scheme bindings
Zbigniew Jędrzejewski-Szmekwrites: > On Fri, Nov 13, 2015 at 09:27:17AM +0100, Jan Synáček wrote: >> Hello, >> >> if anybody lurking here and hacking on systemd also likes scheme, I >> created bindings for GNU Guile [1]. The API is far from covered, but >> journal API and sd_listen* stuff is usable. You can now write socket >> activated services in scheme! >> >> [1] https://github.com/jsynacek/guile-systemd > > Hi, > > when you construct a list like this, do you have normal or reverse order: > for (i = 0; i < r; i++) >s_fds = scm_cons(scm_from_int(SD_LISTEN_FDS_START+i), s_fds); > ? Good catch, it's reversed. But, does it really matter in practice? > return sd_booted() ? SCM_BOOL_T : SCM_BOOL_F; > → sd_booted can return negative for error. _public_ int sd_booted(void) { return laccess("/run/systemd/system/", F_OK) >= 0; } This returns a "boolean" value. I'm not really sure why it would return anything else. But, the documentation indeed says that it can return negative values when it fails. Cheers, -- Jan Synacek Software Engineer, Red Hat signature.asc Description: PGP signature ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] Scheme bindings
David Timothy Strausswrites: > Would you be interested in moving this work to the systemd umbrella project > on GitHub? You would still manage the team, but it may get more visibility. Sure, why not. > On Fri, Nov 13, 2015, 19:27 Jan Synáček wrote: > >> Hello, >> >> if anybody lurking here and hacking on systemd also likes scheme, I >> created bindings for GNU Guile [1]. The API is far from covered, but >> journal API and sd_listen* stuff is usable. You can now write socket >> activated services in scheme! >> >> [1] https://github.com/jsynacek/guile-systemd >> >> Have fun, >> -- >> Jan Synacek >> Software Engineer, Red Hat >> ___ >> systemd-devel mailing list >> systemd-devel@lists.freedesktop.org >> http://lists.freedesktop.org/mailman/listinfo/systemd-devel >> -- Jan Synacek Software Engineer, Red Hat signature.asc Description: PGP signature ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] Scheme bindings
On Fri, Nov 13, 2015 at 09:27:17AM +0100, Jan Synáček wrote: > Hello, > > if anybody lurking here and hacking on systemd also likes scheme, I > created bindings for GNU Guile [1]. The API is far from covered, but > journal API and sd_listen* stuff is usable. You can now write socket > activated services in scheme! > > [1] https://github.com/jsynacek/guile-systemd Hi, when you construct a list like this, do you have normal or reverse order: for (i = 0; i < r; i++) s_fds = scm_cons(scm_from_int(SD_LISTEN_FDS_START+i), s_fds); ? return sd_booted() ? SCM_BOOL_T : SCM_BOOL_F; → sd_booted can return negative for error. Zbyszek ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] Scheme bindings
Would you be interested in moving this work to the systemd umbrella project on GitHub? You would still manage the team, but it may get more visibility. On Fri, Nov 13, 2015, 19:27 Jan Synáčekwrote: > Hello, > > if anybody lurking here and hacking on systemd also likes scheme, I > created bindings for GNU Guile [1]. The API is far from covered, but > journal API and sd_listen* stuff is usable. You can now write socket > activated services in scheme! > > [1] https://github.com/jsynacek/guile-systemd > > Have fun, > -- > Jan Synacek > Software Engineer, Red Hat > ___ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/systemd-devel > ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel