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RFC: Add range check for variables #30

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RFC: Add range check for variables #30

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Commits on Jul 23, 2024

  1. Add range check for variables 

    Add range check for variables using the ".flags" variable. Different
types of ranges can be specified for strings, decimals and hex-values.

- For string one can specify a regular expression for valid string.
- For decimals one can specify an integer range
- For hex values one can specify a bitmask

The range is added by the '@' character after the access flags.

Example:

Environment:

.flags=foo:sw@r"aaab+",bla:dw@100-200,blub:xw@0xffff
foo=aaab
bla=123
blub=0x1234

Commandline:

$ fw_setenv foo aaac
libuboot_set_env failed: -1

$ fw_setenv foo aaabbbb
$ fw_printenv
bla=123
blub=0x1234
foo=aaabbb

Signed-off-by: Lukas Funke <[email protected]>
    @luckyfunky
    luckyfunky committed Jul 23, 2024
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