Correct .Nm use. Add rcsid. Use min for minutes instead of mn.
This commit is contained in:
Philippe Charnier
parent
e333b9445f
commit
5df42cf4ae
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=37417
@ -33,7 +33,7 @@
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)init.8 8.3 (Berkeley) 4/18/94
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.\" $Id: init.8,v 1.10 1997/08/02 00:22:48 davidn Exp $
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.\" $Id: init.8,v 1.11 1998/06/19 08:34:52 jkoshy Exp $
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.\"
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.Dd April 18, 1994
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.Dt INIT 8
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@ -45,18 +45,18 @@
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.Nm init
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.Sh DESCRIPTION
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The
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.Nm init
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.Nm
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program
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is the last stage of the boot process.
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It normally runs the automatic reboot sequence as described in
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.Xr reboot 8 ,
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and if this succeeds, begins multi-user operation.
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If the reboot scripts fail,
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.Nm init
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.Nm
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commences single user operation by giving
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the super-user a shell on the console.
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The
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.Nm init
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.Nm
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program may be passed parameters
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from the boot program to
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prevent the system from going multi-user and to instead execute
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@ -66,27 +66,27 @@ later be made to go to multi-user by exiting the
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single-user shell (with ^D).
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This
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causes
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.Nm init
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.Nm
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to run the
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.Pa /etc/rc
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start up command file in fastboot mode (skipping disk checks).
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.Pp
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If the
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.Nm console
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.Em console
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entry in the
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.Xr ttys 5
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file is marked ``insecure'',
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then
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.Nm init
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.Nm
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will require that the superuser password be
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entered before the system will start a single-user shell.
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The password check is skipped if the
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.Nm console
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.Em console
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is marked as ``secure''.
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.Pp
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The kernel runs with four different levels of security.
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Any superuser process can raise the security level, but only
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.Nm init
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.Nm
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can lower it.
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The security levels are:
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.Bl -tag -width flag
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@ -116,10 +116,10 @@ while the system is multi-user.
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.El
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.Pp
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If the security level is initially -1, then
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.Nm init
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.Nm
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leaves it unchanged.
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Otherwise,
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.Nm init
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.Nm
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arranges to run the system in level 0 mode while single user
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and in level 1 mode while multiuser.
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If level 2 mode is desired while running multiuser,
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@ -132,7 +132,7 @@ to set the
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variable to the required security level.
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.Pp
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In multi-user operation,
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.Nm init
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.Nm
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maintains
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processes for the terminal ports found in the file
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.Xr ttys 5 .
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@ -153,7 +153,7 @@ executes a shell for that user. When this shell
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dies, either because the user logged out
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or an abnormal termination occurred (a signal),
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the
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.Nm init
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.Nm
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program wakes up, deletes the user
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from the
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.Xr utmp 5
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@ -162,7 +162,7 @@ file of current users and records the logout in the
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file.
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The cycle is
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then restarted by
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.Nm init
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.Nm
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executing a new
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.Nm getty
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for the line.
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@ -173,34 +173,34 @@ may be changed in the
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file without a reboot by sending the signal
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.Dv SIGHUP
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to
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.Nm init
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.Nm
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with the command
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.Dq Li "kill -HUP 1" .
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On receipt of this signal,
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.Nm init
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.Nm
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re-reads the
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.Xr ttys 5
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file.
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When a line is turned off in
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.Xr ttys 5 ,
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.Nm init
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.Nm
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will send a SIGHUP signal to the controlling process
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for the session associated with the line.
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For any lines that were previously turned off in the
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.Xr ttys 5
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file and are now on,
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.Nm init
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.Nm
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executes a new
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.Nm getty
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to enable a new login.
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If the getty or window field for a line is changed,
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the change takes effect at the end of the current
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login session (e.g., the next time
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.Nm init
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.Nm
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starts a process on the line).
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If a line is commented out or deleted from
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.Xr ttys 5 ,
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.Nm init
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.Nm
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will not do anything at all to that line.
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However, it will complain that the relationship between lines
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in the
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@ -218,7 +218,7 @@ signal, for example,
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.Dq Li "kill \-TERM 1" .
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If there are processes outstanding that are deadlocked (because of
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hardware or software failure),
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.Nm init
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.Nm
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will not wait for them all to die (which might take forever), but
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will time out after 30 seconds and print a warning message.
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.Pp
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@ -246,7 +246,7 @@ This is useful for shutting the machine down cleanly from inside the kernel
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or from X when the machine appears to be hung.
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.Pp
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When shutting down the machine,
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.Nm init
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.Nm
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will try to run the
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.Pa /etc/rc.shutdown
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script. This script can be used to cleanly terminate specific programs such
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@ -255,11 +255,11 @@ as
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(the InterNetNews server).
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.Pp
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The role of
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.Nm init
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.Nm
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is so critical that if it dies, the system will reboot itself
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automatically.
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If, at bootstrap time, the
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.Nm init
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.Nm
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process cannot be located, the system will panic with the message
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``panic: "init died (signal %d, exit %d)''.
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.Sh DIAGNOSTICS
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@ -281,20 +281,20 @@ a persistent device error condition.
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.Sh FILES
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.Bl -tag -width /var/log/wtmp -compact
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.It Pa /dev/console
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System console device.
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system console device
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.It Pa /dev/tty*
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Terminal ports found in
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.Xr ttys 5 .
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terminal ports found in
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.Xr ttys 5
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.It Pa /var/run/utmp
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Record of Current users on the system.
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record of current users on the system
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.It Pa /var/log/wtmp
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Record of all logins and logouts.
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record of all logins and logouts
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.It Pa /etc/ttys
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The terminal initialization information file.
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the terminal initialization information file
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.It Pa /etc/rc
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System startup commands.
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system startup commands
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.It Pa /etc/rc.shutdown
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System shutdown commands.
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system shutdown commands
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.El
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.Sh SEE ALSO
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.Xr kill 1 ,
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@ -32,18 +32,20 @@
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: init.c,v 1.28 1997/10/10 12:14:48 peter Exp $
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*/
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#ifndef lint
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static char copyright[] =
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static const char copyright[] =
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"@(#) Copyright (c) 1991, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)init.c 8.1 (Berkeley) 7/15/93";
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#endif
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static const char rcsid[] =
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"$Id$";
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#endif /* not lint */
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#include <sys/param.h>
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@ -94,7 +96,7 @@ static char sccsid[] = "@(#)init.c 8.1 (Berkeley) 7/15/93";
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#define WINDOW_WAIT 3 /* wait N secs after starting window */
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#define STALL_TIMEOUT 30 /* wait N secs after warning */
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#define DEATH_WATCH 10 /* wait N secs for procs to die */
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#define DEATH_SCRIPT 120 /* wait for 2mn for /etc/rc.shutdown */
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#define DEATH_SCRIPT 120 /* wait for 2min for /etc/rc.shutdown */
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#define RESOURCE_RC "daemon"
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#define RESOURCE_WINDOW "default"
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#define RESOURCE_GETTY "default"
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