From: Lukas Funke <[email protected]>
This series extends the flags-variable with ranges for environment
variables. The range is appended to the variable flags using
the '@'-character. A range can be decimal (min/max), bitmask or regular
expression (64 byte).
Value ranges for variables can be used to make the environment more
robust against faults such as invalid user input or attacks.
Decimal-range: foo:da@<min>-<max>
Hexadecimal-range(bitmask): bar:xa@0xdeadbeed
Regex-range: mystring:sa@r"klaus|haus|maus"
Example:
"decimalvalue:dw@100-200,"
...
=> env set decimalvalue 1
1 < 100 || 1 > 200
=> env set decimalvalue 150
=>
Lukas Funke (1):
env: introduce variable ranges
cmd/nvedit.c | 30 +++---
env/flags.c | 217 +++++++++++++++++++++++++++++++++++++-
include/configs/sandbox.h | 5 +
include/env_flags.h | 27 ++++-
include/search.h | 1 +
test/env/Makefile | 1 +
test/env/range.c | 113 ++++++++++++++++++++
7 files changed, 377 insertions(+), 17 deletions(-)
create mode 100644 test/env/range.c
--
2.30.2
