From b1db09be5a19f814ed5dc7e0ab095c3355926da6 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <dvlasenk@redhat.com>
Date: Tue, 12 Oct 2010 13:47:15 +0200
Subject: init/*: move applet/kbuild/config/help bits into applet source files
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
---
init/Config.src | 127 ------------------------------
init/Kbuild.src | 4 -
init/bootchartd.c | 4 +
init/halt.c | 62 +++++++++++++++
init/init.c | 231 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
init/mesg.c | 18 +++++
6 files changed, 315 insertions(+), 131 deletions(-)
(limited to 'init')
diff --git a/init/Config.src b/init/Config.src
index 2cac3573e..5767c93f0 100644
--- a/init/Config.src
+++ b/init/Config.src
@@ -7,131 +7,4 @@ menu "Init Utilities"
INSERT
-config INIT
- bool "init"
- default y
- select FEATURE_SYSLOG
- help
- init is the first program run when the system boots.
-
-config FEATURE_USE_INITTAB
- bool "Support reading an inittab file"
- default y
- depends on INIT
- help
- Allow init to read an inittab file when the system boot.
-
-config FEATURE_KILL_REMOVED
- bool "Support killing processes that have been removed from inittab"
- default n
- depends on FEATURE_USE_INITTAB
- help
- When respawn entries are removed from inittab and a SIGHUP is
- sent to init, this option will make init kill the processes
- that have been removed.
-
-config FEATURE_KILL_DELAY
- int "How long to wait between TERM and KILL (0 - send TERM only)" if FEATURE_KILL_REMOVED
- range 0 1024
- default 0
- depends on FEATURE_KILL_REMOVED
- help
- With nonzero setting, init sends TERM, forks, child waits N
- seconds, sends KILL and exits. Setting it too high is unwise
- (child will hang around for too long and could actually kill
- the wrong process!)
-
-config FEATURE_INIT_SCTTY
- bool "Run commands with leading dash with controlling tty"
- default y
- depends on INIT
- help
- If this option is enabled, init will try to give a controlling
- tty to any command which has leading hyphen (often it's "-/bin/sh").
- More precisely, init will do "ioctl(STDIN_FILENO, TIOCSCTTY, 0)".
- If device attached to STDIN_FILENO can be a ctty but is not yet
- a ctty for other session, it will become this process' ctty.
- This is not the traditional init behavour, but is often what you want
- in an embedded system where the console is only accessed during
- development or for maintenance.
- NB: using cttyhack applet may work better.
-
-config FEATURE_INIT_SYSLOG
- bool "Enable init to write to syslog"
- default y
- depends on INIT
-
-config FEATURE_EXTRA_QUIET
- bool "Be _extra_ quiet on boot"
- default y
- depends on INIT
- help
- Prevent init from logging some messages to the console during boot.
-
-config FEATURE_INIT_COREDUMPS
- bool "Support dumping core for child processes (debugging only)"
- default y
- depends on INIT
- help
- If this option is enabled and the file /.init_enable_core
- exists, then init will call setrlimit() to allow unlimited
- core file sizes. If this option is disabled, processes
- will not generate any core files.
-
-config FEATURE_INITRD
- bool "Support running init from within an initrd (not initramfs)"
- default y
- depends on INIT
- help
- Legacy support for running init under the old-style initrd. Allows
- the name linuxrc to act as init, and it doesn't assume init is PID 1.
-
- This does not apply to initramfs, which runs /init as PID 1 and
- requires no special support.
-
-config INIT_TERMINAL_TYPE
- string "Initial terminal type"
- default "linux"
- depends on INIT
- help
- This is the initial value set by init for the TERM environment
- variable. This variable is used by programs which make use of
- extended terminal capabilities.
-
- Note that on Linux, init attempts to detect serial terminal and
- sets TERM to "vt102" if one is found.
-
-config HALT
- bool "poweroff, halt, and reboot"
- default y
- help
- Stop all processes and either halt, reboot, or power off the system.
-
-config FEATURE_CALL_TELINIT
- bool "Call telinit on shutdown and reboot"
- default y
- depends on HALT && !INIT
- help
- Call an external program (normally telinit) to facilitate
- a switch to a proper runlevel.
-
- This option is only available if you selected halt and friends,
- but did not select init.
-
-config TELINIT_PATH
- string "Path to telinit executable"
- default "/sbin/telinit"
- depends on FEATURE_CALL_TELINIT
- help
- When busybox halt and friends have to call external telinit
- to facilitate proper shutdown, this path is to be used when
- locating telinit executable.
-
-config MESG
- bool "mesg"
- default y
- help
- Mesg controls access to your terminal by others. It is typically
- used to allow or disallow other users to write to your terminal
-
endmenu
diff --git a/init/Kbuild.src b/init/Kbuild.src
index 32dd5a045..6b4fb7470 100644
--- a/init/Kbuild.src
+++ b/init/Kbuild.src
@@ -7,7 +7,3 @@
lib-y:=
INSERT
-lib-$(CONFIG_HALT) += halt.o
-lib-$(CONFIG_INIT) += init.o
-lib-$(CONFIG_MESG) += mesg.o
-lib-$(CONFIG_BOOTCHARTD) += bootchartd.o
diff --git a/init/bootchartd.c b/init/bootchartd.c
index f14d5c0fd..5a1b3e8e8 100644
--- a/init/bootchartd.c
+++ b/init/bootchartd.c
@@ -3,6 +3,10 @@
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//applet:IF_BOOTCHARTD(APPLET(bootchartd, _BB_DIR_SBIN, _BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_BOOTCHARTD) += bootchartd.o
+
//config:config BOOTCHARTD
//config: bool "bootchartd"
//config: default y
diff --git a/init/halt.c b/init/halt.c
index 903953e80..47f1ef7b2 100644
--- a/init/halt.c
+++ b/init/halt.c
@@ -7,6 +7,68 @@
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
+//applet:IF_HALT(APPLET(halt, _BB_DIR_SBIN, _BB_SUID_DROP))
+//applet:IF_HALT(APPLET_ODDNAME(poweroff, halt, _BB_DIR_SBIN, _BB_SUID_DROP, poweroff))
+//applet:IF_HALT(APPLET_ODDNAME(reboot, halt, _BB_DIR_SBIN, _BB_SUID_DROP, reboot))
+
+//kbuild:lib-$(CONFIG_HALT) += halt.o
+
+//config:config HALT
+//config: bool "poweroff, halt, and reboot"
+//config: default y
+//config: help
+//config: Stop all processes and either halt, reboot, or power off the system.
+//config:
+//config:config FEATURE_CALL_TELINIT
+//config: bool "Call telinit on shutdown and reboot"
+//config: default y
+//config: depends on HALT && !INIT
+//config: help
+//config: Call an external program (normally telinit) to facilitate
+//config: a switch to a proper runlevel.
+//config:
+//config: This option is only available if you selected halt and friends,
+//config: but did not select init.
+//config:
+//config:config TELINIT_PATH
+//config: string "Path to telinit executable"
+//config: default "/sbin/telinit"
+//config: depends on FEATURE_CALL_TELINIT
+//config: help
+//config: When busybox halt and friends have to call external telinit
+//config: to facilitate proper shutdown, this path is to be used when
+//config: locating telinit executable.
+
+//usage:#define halt_trivial_usage
+//usage: "[-d DELAY] [-n] [-f]" IF_FEATURE_WTMP(" [-w]")
+//usage:#define halt_full_usage "\n\n"
+//usage: "Halt the system\n"
+//usage: "\nOptions:"
+//usage: "\n -d SEC Delay interval"
+//usage: "\n -n Do not sync"
+//usage: "\n -f Force (don't go through init)"
+//usage: IF_FEATURE_WTMP(
+//usage: "\n -w Only write a wtmp record"
+//usage: )
+//usage:
+//usage:#define poweroff_trivial_usage
+//usage: "[-d DELAY] [-n] [-f]"
+//usage:#define poweroff_full_usage "\n\n"
+//usage: "Halt and shut off power\n"
+//usage: "\nOptions:"
+//usage: "\n -d SEC Delay interval"
+//usage: "\n -n Do not sync"
+//usage: "\n -f Force (don't go through init)"
+//usage:
+//usage:#define reboot_trivial_usage
+//usage: "[-d DELAY] [-n] [-f]"
+//usage:#define reboot_full_usage "\n\n"
+//usage: "Reboot the system\n"
+//usage: "\nOptions:"
+//usage: "\n -d SEC Delay interval"
+//usage: "\n -n Do not sync"
+//usage: "\n -f Force (don't go through init)"
+
#include "libbb.h"
#include "reboot.h"
diff --git a/init/init.c b/init/init.c
index 5c0d11402..340731b8b 100644
--- a/init/init.c
+++ b/init/init.c
@@ -9,6 +9,237 @@
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//applet:IF_INIT(APPLET(init, _BB_DIR_SBIN, _BB_SUID_DROP))
+//applet:IF_FEATURE_INITRD(APPLET_ODDNAME(linuxrc, init, _BB_DIR_ROOT, _BB_SUID_DROP, linuxrc))
+
+//kbuild:lib-$(CONFIG_INIT) += init.o
+
+//config:config INIT
+//config: bool "init"
+//config: default y
+//config: select FEATURE_SYSLOG
+//config: help
+//config: init is the first program run when the system boots.
+//config:
+//config:config FEATURE_USE_INITTAB
+//config: bool "Support reading an inittab file"
+//config: default y
+//config: depends on INIT
+//config: help
+//config: Allow init to read an inittab file when the system boot.
+//config:
+//config:config FEATURE_KILL_REMOVED
+//config: bool "Support killing processes that have been removed from inittab"
+//config: default n
+//config: depends on FEATURE_USE_INITTAB
+//config: help
+//config: When respawn entries are removed from inittab and a SIGHUP is
+//config: sent to init, this option will make init kill the processes
+//config: that have been removed.
+//config:
+//config:config FEATURE_KILL_DELAY
+//config: int "How long to wait between TERM and KILL (0 - send TERM only)" if FEATURE_KILL_REMOVED
+//config: range 0 1024
+//config: default 0
+//config: depends on FEATURE_KILL_REMOVED
+//config: help
+//config: With nonzero setting, init sends TERM, forks, child waits N
+//config: seconds, sends KILL and exits. Setting it too high is unwise
+//config: (child will hang around for too long and could actually kill
+//config: the wrong process!)
+//config:
+//config:config FEATURE_INIT_SCTTY
+//config: bool "Run commands with leading dash with controlling tty"
+//config: default y
+//config: depends on INIT
+//config: help
+//config: If this option is enabled, init will try to give a controlling
+//config: tty to any command which has leading hyphen (often it's "-/bin/sh").
+//config: More precisely, init will do "ioctl(STDIN_FILENO, TIOCSCTTY, 0)".
+//config: If device attached to STDIN_FILENO can be a ctty but is not yet
+//config: a ctty for other session, it will become this process' ctty.
+//config: This is not the traditional init behavour, but is often what you want
+//config: in an embedded system where the console is only accessed during
+//config: development or for maintenance.
+//config: NB: using cttyhack applet may work better.
+//config:
+//config:config FEATURE_INIT_SYSLOG
+//config: bool "Enable init to write to syslog"
+//config: default y
+//config: depends on INIT
+//config:
+//config:config FEATURE_EXTRA_QUIET
+//config: bool "Be _extra_ quiet on boot"
+//config: default y
+//config: depends on INIT
+//config: help
+//config: Prevent init from logging some messages to the console during boot.
+//config:
+//config:config FEATURE_INIT_COREDUMPS
+//config: bool "Support dumping core for child processes (debugging only)"
+//config: default y
+//config: depends on INIT
+//config: help
+//config: If this option is enabled and the file /.init_enable_core
+//config: exists, then init will call setrlimit() to allow unlimited
+//config: core file sizes. If this option is disabled, processes
+//config: will not generate any core files.
+//config:
+//config:config FEATURE_INITRD
+//config: bool "Support running init from within an initrd (not initramfs)"
+//config: default y
+//config: depends on INIT
+//config: help
+//config: Legacy support for running init under the old-style initrd. Allows
+//config: the name linuxrc to act as init, and it doesn't assume init is PID 1.
+//config:
+//config: This does not apply to initramfs, which runs /init as PID 1 and
+//config: requires no special support.
+//config:
+//config:config INIT_TERMINAL_TYPE
+//config: string "Initial terminal type"
+//config: default "linux"
+//config: depends on INIT
+//config: help
+//config: This is the initial value set by init for the TERM environment
+//config: variable. This variable is used by programs which make use of
+//config: extended terminal capabilities.
+//config:
+//config: Note that on Linux, init attempts to detect serial terminal and
+//config: sets TERM to "vt102" if one is found.
+
+//usage:#define init_trivial_usage
+//usage: ""
+//usage:#define init_full_usage "\n\n"
+//usage: "Init is the parent of all processes"
+//usage:
+//usage:#define init_notes_usage
+//usage: "This version of init is designed to be run only by the kernel.\n"
+//usage: "\n"
+//usage: "BusyBox init doesn't support multiple runlevels. The runlevels field of\n"
+//usage: "the /etc/inittab file is completely ignored by BusyBox init. If you want\n"
+//usage: "runlevels, use sysvinit.\n"
+//usage: "\n"
+//usage: "BusyBox init works just fine without an inittab. If no inittab is found,\n"
+//usage: "it has the following default behavior:\n"
+//usage: "\n"
+//usage: " ::sysinit:/etc/init.d/rcS\n"
+//usage: " ::askfirst:/bin/sh\n"
+//usage: " ::ctrlaltdel:/sbin/reboot\n"
+//usage: " ::shutdown:/sbin/swapoff -a\n"
+//usage: " ::shutdown:/bin/umount -a -r\n"
+//usage: " ::restart:/sbin/init\n"
+//usage: "\n"
+//usage: "if it detects that /dev/console is _not_ a serial console, it will also run:\n"
+//usage: "\n"
+//usage: " tty2::askfirst:/bin/sh\n"
+//usage: " tty3::askfirst:/bin/sh\n"
+//usage: " tty4::askfirst:/bin/sh\n"
+//usage: "\n"
+//usage: "If you choose to use an /etc/inittab file, the inittab entry format is as follows:\n"
+//usage: "\n"
+//usage: " <id>:<runlevels>:<action>:<process>\n"
+//usage: "\n"
+//usage: " <id>:\n"
+//usage: "\n"
+//usage: " WARNING: This field has a non-traditional meaning for BusyBox init!\n"
+//usage: " The id field is used by BusyBox init to specify the controlling tty for\n"
+//usage: " the specified process to run on. The contents of this field are\n"
+//usage: " appended to \"/dev/\" and used as-is. There is no need for this field to\n"
+//usage: " be unique, although if it isn't you may have strange results. If this\n"
+//usage: " field is left blank, the controlling tty is set to the console. Also\n"
+//usage: " note that if BusyBox detects that a serial console is in use, then only\n"
+//usage: " entries whose controlling tty is either the serial console or /dev/null\n"
+//usage: " will be run. BusyBox init does nothing with utmp. We don't need no\n"
+//usage: " stinkin' utmp.\n"
+//usage: "\n"
+//usage: " <runlevels>:\n"
+//usage: "\n"
+//usage: " The runlevels field is completely ignored.\n"
+//usage: "\n"
+//usage: " <action>:\n"
+//usage: "\n"
+//usage: " Valid actions include: sysinit, respawn, askfirst, wait,\n"
+//usage: " once, restart, ctrlaltdel, and shutdown.\n"
+//usage: "\n"
+//usage: " The available actions can be classified into two groups: actions\n"
+//usage: " that are run only once, and actions that are re-run when the specified\n"
+//usage: " process exits.\n"
+//usage: "\n"
+//usage: " Run only-once actions:\n"
+//usage: "\n"
+//usage: " 'sysinit' is the first item run on boot. init waits until all\n"
+//usage: " sysinit actions are completed before continuing. Following the\n"
+//usage: " completion of all sysinit actions, all 'wait' actions are run.\n"
+//usage: " 'wait' actions, like 'sysinit' actions, cause init to wait until\n"
+//usage: " the specified task completes. 'once' actions are asynchronous,\n"
+//usage: " therefore, init does not wait for them to complete. 'restart' is\n"
+//usage: " the action taken to restart the init process. By default this should\n"
+//usage: " simply run /sbin/init, but can be a script which runs pivot_root or it\n"
+//usage: " can do all sorts of other interesting things. The 'ctrlaltdel' init\n"
+//usage: " actions are run when the system detects that someone on the system\n"
+//usage: " console has pressed the CTRL-ALT-DEL key combination. Typically one\n"
+//usage: " wants to run 'reboot' at this point to cause the system to reboot.\n"
+//usage: " Finally the 'shutdown' action specifies the actions to taken when\n"
+//usage: " init is told to reboot. Unmounting filesystems and disabling swap\n"
+//usage: " is a very good here.\n"
+//usage: "\n"
+//usage: " Run repeatedly actions:\n"
+//usage: "\n"
+//usage: " 'respawn' actions are run after the 'once' actions. When a process\n"
+//usage: " started with a 'respawn' action exits, init automatically restarts\n"
+//usage: " it. Unlike sysvinit, BusyBox init does not stop processes from\n"
+//usage: " respawning out of control. The 'askfirst' actions acts just like\n"
+//usage: " respawn, except that before running the specified process it\n"
+//usage: " displays the line \"Please press Enter to activate this console.\"\n"
+//usage: " and then waits for the user to press enter before starting the\n"
+//usage: " specified process.\n"
+//usage: "\n"
+//usage: " Unrecognized actions (like initdefault) will cause init to emit an\n"
+//usage: " error message, and then go along with its business. All actions are\n"
+//usage: " run in the order they appear in /etc/inittab.\n"
+//usage: "\n"
+//usage: " <process>:\n"
+//usage: "\n"
+//usage: " Specifies the process to be executed and its command line.\n"
+//usage: "\n"
+//usage: "Example /etc/inittab file:\n"
+//usage: "\n"
+//usage: " # This is run first except when booting in single-user mode\n"
+//usage: " #\n"
+//usage: " ::sysinit:/etc/init.d/rcS\n"
+//usage: " \n"
+//usage: " # /bin/sh invocations on selected ttys\n"
+//usage: " #\n"
+//usage: " # Start an \"askfirst\" shell on the console (whatever that may be)\n"
+//usage: " ::askfirst:-/bin/sh\n"
+//usage: " # Start an \"askfirst\" shell on /dev/tty2-4\n"
+//usage: " tty2::askfirst:-/bin/sh\n"
+//usage: " tty3::askfirst:-/bin/sh\n"
+//usage: " tty4::askfirst:-/bin/sh\n"
+//usage: " \n"
+//usage: " # /sbin/getty invocations for selected ttys\n"
+//usage: " #\n"
+//usage: " tty4::respawn:/sbin/getty 38400 tty4\n"
+//usage: " tty5::respawn:/sbin/getty 38400 tty5\n"
+//usage: " \n"
+//usage: " \n"
+//usage: " # Example of how to put a getty on a serial line (for a terminal)\n"
+//usage: " #\n"
+//usage: " #::respawn:/sbin/getty -L ttyS0 9600 vt100\n"
+//usage: " #::respawn:/sbin/getty -L ttyS1 9600 vt100\n"
+//usage: " #\n"
+//usage: " # Example how to put a getty on a modem line\n"
+//usage: " #::respawn:/sbin/getty 57600 ttyS2\n"
+//usage: " \n"
+//usage: " # Stuff to do when restarting the init process\n"
+//usage: " ::restart:/sbin/init\n"
+//usage: " \n"
+//usage: " # Stuff to do before rebooting\n"
+//usage: " ::ctrlaltdel:/sbin/reboot\n"
+//usage: " ::shutdown:/bin/umount -a -r\n"
+//usage: " ::shutdown:/sbin/swapoff -a\n"
+
#include "libbb.h"
#include <syslog.h>
#include <paths.h>
diff --git a/init/mesg.c b/init/mesg.c
index ef5f0eb66..b560df205 100644
--- a/init/mesg.c
+++ b/init/mesg.c
@@ -7,6 +7,24 @@
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//applet:IF_MESG(APPLET(mesg, _BB_DIR_USR_BIN, _BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_MESG) += mesg.o
+
+//config:config MESG
+//config: bool "mesg"
+//config: default y
+//config: help
+//config: Mesg controls access to your terminal by others. It is typically
+//config: used to allow or disallow other users to write to your terminal
+
+//usage:#define mesg_trivial_usage
+//usage: "[y|n]"
+//usage:#define mesg_full_usage "\n\n"
+//usage: "Control write access to your terminal\n"
+//usage: " y Allow write access to your terminal\n"
+//usage: " n Disallow write access to your terminal"
+
#include "libbb.h"
#ifdef USE_TTY_GROUP
--
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