On Thu, 25.07.13 19:35, Gerardo Exequiel Pozzi (vmlinuz...@yahoo.com.ar) wrote:
> On 07/25/2013 05:06 PM, Lennart Poettering wrote: > > On Sat, 20.07.13 16:37, Gerardo Exequiel Pozzi (vmlinuz...@yahoo.com.ar) > > wrote: > > > >> Hello > >> > >> I am maintainer of Archiso project (The Arch Linux live ISO creator). > >> > >> I like a feature for systemd within unit files, mainly for importing > >> /proc/cmdline in initramfs stage, or in a generic form for any other > >> file with a similar format. Something like ImportOneLineFile=, like > >> current EnvironmentFile=. > >> > >> In this way, we can use/pass parameters to Exec*= directives if needed. > > > > So you awant to import kernel cmdline arguments into your environment? > > Yes, in a particular unit. > > > Note that you can do that already with the systemd.setenv= kernel > > command line option. What else do you need? > > > > Yes. But doing in this way: > > * Makes each variable passed, global to all units. > * For each parameter that I need to process I need to prefix them. > > So for example > archisobasedir=arch archisolabel=ARCH_201307 checksum=y > becomes: > systemd.setenv=archisobasedir=arch > systemd.setenv=archisolabel=ARCH_201307 systemd.setenv=checksum=y > > And if booting via PXE, think about automatic cmdline appended by > "ip=..." PXELINUX/IPAPPEND... > > The other solution that I have is using a service+script for > parsing/dumping cmdline in a file, then import with EnvironmentFile= but > does not look good. Other way maybe is using a generator, but they run > too early and I need to wait for some things happens before generating > units in a dynamic way. Hmm, but how do you process those variables further? In a shell script anyway? That sounds as if it would be appropriate to also parse /proc/cmdline from there? Why would it be better to do this in systemd rather than in the shell script itself? (or similar: better than in the Pythons script itself, Perl script, C program ...) Lennart -- Lennart Poettering - Red Hat, Inc. _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
