Add in a new restart init target, triggered by SIGHUP. Patch from

Russ Dill, with adjustments by me.
 -Erik

1 files changed, 9 insertions, 2 deletions

diff --git a/include/usage.h b/include/usage.h
index b84cdd5e3..a970c0f9c 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -765,6 +765,7 @@
 "       ::ctrlaltdel:/sbin/reboot\n" \
 "       ::shutdown:/sbin/swapoff -a\n" \
 "       ::shutdown:/bin/umount -a -r\n" \
+"       ::restart:/sbin/init\n" \
 "\n" \
 "if it detects that /dev/console is _not_ a serial console, it will also run:\n" \
 "\n" \
@@ -796,7 +797,7 @@
 "       <action>: \n" \
 "\n" \
 "               Valid actions include: sysinit, respawn, askfirst, wait, \n" \
-"               once, ctrlaltdel, and shutdown.\n" \
+"               once, restart, ctrlaltdel, and shutdown.\n" \
 "\n" \
 "               The available actions can be classified into two groups: actions\n" \
 "               that are run only once, and actions that are re-run when the specified\n" \
@@ -809,7 +810,10 @@
 "                       completion of all sysinit actions, all 'wait' actions are run.\n" \
 "                       'wait' actions, like  'sysinit' actions, cause init to wait until\n" \
 "                       the specified task completes.  'once' actions are asynchronous,\n" \
-"                       therefore, init does not wait for them to complete.  'ctrlaltdel'\n" \
+"                       therefore, init does not wait for them to complete.  'restart' is\n" \
+"                       the action taken to restart the init process.  By default this should\n" \
+"                       simply run /sbin/init, but can be a script which runs pivot_root or it\n" \
+"                       can do all sorts of other interesting things.  The 'ctrlaltdel' init\n" \
 "                       actions are run when the system detects that someone on the system\n" \
 "                       console has pressed the CTRL-ALT-DEL key combination.  Typically one\n" \
 "                       wants to run 'reboot' at this point to cause the system to reboot.\n" \
@@ -865,6 +869,9 @@
 "       # Example how to put a getty on a modem line.\n" \
 "       #::respawn:/sbin/getty 57600 ttyS2\n" \
 "       \n" \
+"       # Stuff to do when restarting the init process\n" \
+"       ::restart:/sbin/init\n" \
+"       \n" \
 "       # Stuff to do before rebooting\n" \
 "       ::ctrlaltdel:/sbin/reboot\n" \
 "       ::shutdown:/bin/umount -a -r\n" \