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On Mon, Sep 19, 2011 at 7:08 PM, Joshua Kinard <kumba@g.o> wrote: |
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> That's what I take issue with -- the whims of a commercial enterprise |
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> ultimately deciding, at some possible, future point, what path we take. In |
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> other words, those of us not running cluster farms shouldn't have to change |
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> things, even slightly (like using an initramfs if needed) for those that do. |
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> Linux's greatest asset is its extreme configurability -- a single source |
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> tree can be compiled to run on super computers or cable boxes. |
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|
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For what it's worth, I've got a simple alternative to the initramfs |
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approach, that may be handy for people like you. The idea is to enable |
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CONFIG_DEVTMPFS=y and CONFIG_DEVTMPFS_MOUNT=y in the kernel, pass |
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something like init=/sbin/linuxrc as a kernel parameter via the |
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bootloader, and have /sbin/linuxrc be a simple shell script that mounts |
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/proc, /sys, and /usr before calling 'exec /sbin/init'. |
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|
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You can use whatever shell you want for /sbin/linuxrc, as long as it |
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doesn't have some kind of dependency on /usr. For example, if you want |
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your script to run using a really minimal shell with the fewest possible |
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dependencies, you can put '#!/sbin/busybox ash' in the shebang so that |
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it will use your statically linked busybox. |
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|
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Something like this should do the trick in /sbin/linuxrc: |
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|
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#!/sbin/busybox ash |
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mount -t proc proc /proc |
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mount -t sysfs sysfs /sys |
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mount /usr |
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exec /sbin/init |
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|
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-- |
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Thanks, |
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Zac |