From: Masami Hiramatsu (Google) <[email protected]> Add the EBNF definition to Documentation/admin-guide/bootconfig.rst as an additional section to formally define the bootconfig syntax.
Signed-off-by: Masami Hiramatsu (Google) <[email protected]> --- Changes in v2: - Move EBNF as a separated section. --- Documentation/admin-guide/bootconfig.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/Documentation/admin-guide/bootconfig.rst b/Documentation/admin-guide/bootconfig.rst index f712758472d5..41bd1ee92395 100644 --- a/Documentation/admin-guide/bootconfig.rst +++ b/Documentation/admin-guide/bootconfig.rst @@ -152,6 +152,23 @@ Note that you can NOT put a comment or a newline between value and delimiter key = 1 # comment ,2 +EBNF definition +=============== + +The syntax is defined in EBNF as follows:: + + Config = { Statement } + Statement = [ Key [ Assignment | Block ] | Comment ] ( "\n" | ";" ) + Assignment = ( "=" | "+=" | ":=" ) ValueList + ValueList = [ Value { "," [ { ( Comment | "\n" ) } ] Value } ] + Block = "{" { Statement } "}" + Key = Word { "." Word } + Word = [a-zA-Z0-9_-]+ + Value = QuotedValue | UnquotedValue + QuotedValue = "\"" { any_character_except_double_quote } "\"" + | "'" { any_character_except_single_quote } "'" + UnquotedValue = { any_printable_character_except_delimiters } + Comment = "#" { any_character_except_newline } /proc/bootconfig ================
