https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218154
Bug ID: 218154
Summary: Cannot use [bcdef] characters at escape sequence of
jail.conf(5)
Product: Base System
Version: 11.0-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: [email protected]
Reporter: [email protected]
Created attachment 181220
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=181220&action=edit
patch to usr.sbin/jail/jaillex.l
jail.conf(5) accepts escape sequence like "foo\x2Dbar" but you cannot use
[bcdef] characters in it.
It's easy to understand at usr.sbin/jail/jaillex.l:
if (s[1] >= '0' && s[1] <= '9')
*d = *++s - '0';
else if (s[1] >= 'A' && s[1] <= 'F')
*d = *++s + (0xA - 'A');
else if (s[1] >= 'a' && s[1] <= 'a')
~~~ oops...
*d = *++s + (0xa - 'a');
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