src-test2/sys/ddb/db_script.c, branch release/8.2.0FreeBSD source treehttps://cgit-dev.freebsd.org/src-test2/atom?h=release%2F8.2.02007-12-26T10:51:07ZRemove duplicate $FreeBSD$ that snuck in.2007-12-26T10:51:07ZRobert Watsonrwatson@FreeBSD.org2007-12-26T10:51:07Zurn:sha1:44daa2da55636aae9df0c71d5878fa787778b178
MFC after: 3 months
Add a simple scripting facility to DDB(4), allowing the user to2007-12-26T09:33:19ZRobert Watsonrwatson@FreeBSD.org2007-12-26T09:33:19Zurn:sha1:c9b0cc3b9623c30583400b137b82ec92483435ad
define a set of named scripts. Each script consists of a list of DDB
commands separated by ";"s that will be executed verbatim. No higher
level language constructs, such as branching, are provided for:
scripts are executed by sequentially injecting commands into the DDB
input buffer.
Four new commands are present in DDB: "run" to run a specific script,
"script" to define or print a script, "scripts" to list currently
defined scripts, and "unscript" to delete a script, modeled on shell
alias commands. Scripts may also be manipulated using sysctls in the
debug.ddb.scripting MIB space, although users will prefer to use the
soon-to-be-added ddb(8) tool for usability reasons.
Scripts with certain names are automatically executed on various DDB
events, such as entering the debugger via a panic, a witness error,
watchdog, breakpoint, sysctl, serial break, etc, allowing customized
handling.
MFC after: 3 months