Messages in this thread | | | Date | Fri, 2 Nov 2018 14:14:44 -0700 | From | Daniel Walker <> | Subject | Re: [PATCH] Make JFFS2 endianness configurable |
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On Fri, Nov 02, 2018 at 09:15:06PM +0100, Richard Weinberger wrote: > On Fri, Nov 2, 2018 at 3:04 PM Daniel Walker <danielwa@cisco.com> wrote: > > Do you have any thought on how to implement it ? I was think abstracting the > > endian functions in the nodelist.h > > Yes, see what UFS does. > > > static inline jint16_t cpu_to_je16(jint16_t x) { > > if (check_big_endian()) { > > return cpu_to_be16(x); > > } else if (check_little_endian()) { > > return cpu_to_le16(x); > > } > > } > > > > but how would you setup the checking ? > > Make it a mount option and store the endianness mode in the super block.
It's actually a mkfs option currently. I'm not sure how that factors in,
from the mkfs.jffs2 man page,
-l, --little-endian Create a little-endian JFFS2 image. Default is to make an image with the same endianness as the host.
-b, --big-endian Create a big-endian JFFS2 image. Default is to make an image with the same endianness as the host.
Daniel
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