mirror of
https://github.com/lxsang/meta-rpi-diya.git
synced 2024-11-08 14:38:21 +01:00
83 lines
2.1 KiB
Bash
83 lines
2.1 KiB
Bash
#!/bin/sh
|
|
# Copyright (C) 2011 O.S. Systems Software LTDA.
|
|
# Licensed on MIT
|
|
|
|
# Adds support to dynamic debugging of initramfs using bootparam in
|
|
# following format:
|
|
# shell : starts a shell before and after each module
|
|
# shell=before:<module> : starts a shell before <module> is loaded and run
|
|
# shell=after:<module> : starts a shell after <module> is loaded and run
|
|
#
|
|
# shell-debug : run set -x as soon as possible
|
|
# shell-debug=before:<module> : run set -x before <module> is loaded and run
|
|
# shell-debug=after:<module> : run set -x after <module> is loaded and run
|
|
|
|
DEBUG_SHELL="false"
|
|
|
|
debug_hook_handler() {
|
|
status=$1
|
|
module=$2
|
|
|
|
if [ -n "$bootparam_shell" ] && [ "$bootparam_shell" != "true" ]; then
|
|
shell_wanted_status=`expr $bootparam_shell : '\(.*\):.*'`
|
|
shell_wanted_module=`expr $bootparam_shell : '.*:\(.*\)'`
|
|
|
|
if [ "$shell_wanted_status" = "before" ]; then
|
|
shell_wanted_status=pre
|
|
else
|
|
shell_wanted_status=post
|
|
fi
|
|
fi
|
|
|
|
if [ "$bootparam_shell" = "true" ] ||
|
|
( [ "$status" = "$shell_wanted_status" ] &&
|
|
[ "$module" = "$shell_wanted_module" ] ); then
|
|
if [ "$status" = "pre" ]; then
|
|
status_msg="before"
|
|
else
|
|
status_msg="after"
|
|
fi
|
|
|
|
msg "Starting shell $status_msg $module..."
|
|
sh
|
|
fi
|
|
|
|
if [ -n "$bootparam_shell_debug" ] && [ "$bootparam_shell_debug" != "true" ]; then
|
|
shell_debug_wanted_status=`expr $bootparam_shell_debug : '\(.*\):.*'`
|
|
shell_debug_wanted_module=`expr $bootparam_shell_debug : '.*:\(.*\)'`
|
|
|
|
if [ "$shell_debug_wanted_status" = "before" ]; then
|
|
shell_debug_wanted_status=pre
|
|
else
|
|
shell_debug_wanted_status=post
|
|
fi
|
|
fi
|
|
|
|
if [ "$bootparam_shell_debug" = "true" ] ||
|
|
( [ "$status" = "$shell_debug_wanted_status" ] &&
|
|
[ "$module" = "$shell_debug_wanted_module" ] ); then
|
|
if [ "$DEBUG_SHELL" = "true" ]; then
|
|
return 0
|
|
fi
|
|
|
|
if [ "$status" = "pre" ]; then
|
|
status_msg="before"
|
|
else
|
|
status_msg="after"
|
|
fi
|
|
|
|
msg "Starting shell debugging $status_msg $module..."
|
|
DEBUG_SHELL="true"
|
|
set -x
|
|
fi
|
|
}
|
|
|
|
debug_enabled() {
|
|
return 0
|
|
}
|
|
|
|
debug_run() {
|
|
add_module_pre_hook "debug_hook_handler"
|
|
add_module_post_hook "debug_hook_handler"
|
|
}
|