# # For a description of the syntax of this configuration file, # see scripts/kbuild/config-language.txt. # comment "-------------------------------------------------" comment "Init Utilities" comment "-------------------------------------------------" config KEMBTK_BUSYB_BOOTCHARTD bool "bootchartd" default y help bootchartd is commonly used to profile the boot process for the purpose of speeding it up. In this case, it is started by the kernel as the init process. This is configured by adding the init=/sbin/bootchartd option to the kernel command line. It can also be used to monitor the resource usage of a specific application or the running system in general. In this case, bootchartd is started interactively by running bootchartd start and stopped using bootchartd stop. config KEMBTK_BUSYB_FEATURE_BOOTCHARTD_BLOATED_HEADER bool "Compatible, bloated header" default y depends on KEMBTK_BUSYB_BOOTCHARTD help Create extended header file compatible with "big" bootchartd. "Big" bootchartd is a shell script and it dumps some "convenient" info int the header, such as: title = Boot chart for `hostname` (`date`) system.uname = `uname -srvm` system.release = `cat /etc/DISTRO-release` system.cpu = `grep '^model name' /proc/cpuinfo | head -1` ($cpucount) system.kernel.options = `cat /proc/cmdline` This data is not mandatory for bootchart graph generation, and is considered bloat. Nevertheless, this option makes bootchartd applet to dump a subset of it. config KEMBTK_BUSYB_FEATURE_BOOTCHARTD_CONFIG_FILE bool "Support bootchartd.conf" default y depends on KEMBTK_BUSYB_BOOTCHARTD help Enable reading and parsing of $PWD/bootchartd.conf and /etc/bootchartd.conf files. config KEMBTK_BUSYB_HALT bool "poweroff, halt, and reboot" default y help Stop all processes and either halt, reboot, or power off the system. config KEMBTK_BUSYB_FEATURE_CALL_TELINIT bool "Call telinit on shutdown and reboot" default y depends on KEMBTK_BUSYB_HALT && !KEMBTK_BUSYB_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 KEMBTK_BUSYB_TELINIT_PATH string "Path to telinit executable" default "/sbin/telinit" depends on KEMBTK_BUSYB_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 KEMBTK_BUSYB_INIT bool "init" default y select KEMBTK_BUSYB_FEATURE_SYSLOG help init is the first program run when the system boots. config KEMBTK_BUSYB_FEATURE_USE_INITTAB bool "Support reading an inittab file" default y depends on KEMBTK_BUSYB_INIT help Allow init to read an inittab file when the system boot. config KEMBTK_BUSYB_FEATURE_KILL_REMOVED bool "Support killing processes that have been removed from inittab" depends on KEMBTK_BUSYB_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 KEMBTK_BUSYB_FEATURE_KILL_DELAY int "How long to wait between TERM and KEMBTK_BUSYB_KILL (0 - send TERM only)" if KEMBTK_BUSYB_FEATURE_KILL_REMOVED range 0 1024 default 0 depends on KEMBTK_BUSYB_FEATURE_KILL_REMOVED help With nonzero setting, init sends TERM, forks, child waits N seconds, sends KEMBTK_BUSYB_KILL and exits. Setting it too high is unwise (child will hang around for too long and could actually kill the wrong process!) config KEMBTK_BUSYB_FEATURE_INIT_SCTTY bool "Run commands with leading dash with controlling tty" default y depends on KEMBTK_BUSYB_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 KEMBTK_BUSYB_FEATURE_INIT_SYSLOG bool "Enable init to write to syslog" default y depends on KEMBTK_BUSYB_INIT config KEMBTK_BUSYB_FEATURE_EXTRA_QUIET bool "Be _extra_ quiet on boot" default y depends on KEMBTK_BUSYB_INIT help Prevent init from logging some messages to the console during boot. config KEMBTK_BUSYB_FEATURE_INIT_COREDUMPS bool "Support dumping core for child processes (debugging only)" default y depends on KEMBTK_BUSYB_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 KEMBTK_BUSYB_FEATURE_INITRD bool "Support running init from within an initrd (not initramfs)" default y depends on KEMBTK_BUSYB_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 KEMBTK_BUSYB_INIT_TERMINAL_TYPE string "Initial terminal type" default "linux" depends on KEMBTK_BUSYB_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 KEMBTK_BUSYB_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 config KEMBTK_BUSYB_FEATURE_MESG_ENABLE_ONLY_GROUP bool "Enable writing to tty only by group, not by everybody" default y depends on KEMBTK_BUSYB_MESG help Usually, ttys are owned by group "tty", and "write" tool is setgid to this group. This way, "mesg y" only needs to enable "write by owning group" bit in tty mode. If you set this option to N, "mesg y" will enable writing by anybody at all. This is not recommended.