Some more thoughts with your example, dmsetup might look like:
# dmsetup create --bootformat "lroot:uuid,rw,0 2097152 linear 8:2 0, \
2097152 2097152 linear 8:3 0, 4194304 2097152 linear 8:4 0"
- also supporting creating multiple devices if the semi-colon is used
- colon to separate name from uuid, like we already do major:minor
- colon to separate other flags from rw if we need them in future
- splitting first on a unescaped semi-colons, then on the first two
unescaped commas, and then on unescaped commas and then unescaped spaces
within the table
- backslash escapes the following character so it is never a treated
as a separator
- lroot\:uuid\;\\\ \"\, would be a device with no uuid and the name
lroot:uuid;\ ", (on a non-udev system without name mangling)
# dmsetup ls --bootformat lroot
dm="lroot:uuid,rw,0 2097152 linear 8:2 0, 2097152 2097152 \
linear 8:3 0, 4194304 2097152 linear 8:4 0"
# dmsetup ls --bootformat
(all devices on one output line)
While the code also supports devices in the /dev/sda2 format for
convenience, please use the preferred 8:2 format in any implementation
and documented examples (to avoid the unnecessary dependency on /dev and
its dependencies).
Or with some alternative name for the option
--boot[format|param]
--short[format]
--kernelparam
--condensed
other suggestions?
dmsetup create --condensed
dmsetup ls --condensed
Alasdair
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