init/*: move applet/kbuild/config/help bits into applet source files
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
This commit is contained in:
Denys Vlasenko
parent
d4d289acf5
commit
b1db09be5a
@ -72,7 +72,6 @@ IF_BASENAME(APPLET_NOFORK(basename, basename, _BB_DIR_USR_BIN, _BB_SUID_DROP, ba
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IF_BBCONFIG(APPLET(bbconfig, _BB_DIR_BIN, _BB_SUID_DROP))
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IF_BEEP(APPLET(beep, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_BLKID(APPLET(blkid, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_BOOTCHARTD(APPLET(bootchartd, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_BRCTL(APPLET(brctl, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
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IF_BZIP2(APPLET(bzip2, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_CAL(APPLET(cal, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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@ -165,7 +164,6 @@ IF_GETSEBOOL(APPLET(getsebool, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
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IF_GETTY(APPLET(getty, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_GUNZIP(APPLET(gunzip, _BB_DIR_BIN, _BB_SUID_DROP))
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IF_GZIP(APPLET(gzip, _BB_DIR_BIN, _BB_SUID_DROP))
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IF_HALT(APPLET(halt, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_HD(APPLET_NOEXEC(hd, hexdump, _BB_DIR_USR_BIN, _BB_SUID_DROP, hd))
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IF_HDPARM(APPLET(hdparm, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_HEAD(APPLET_NOEXEC(head, head, _BB_DIR_USR_BIN, _BB_SUID_DROP, head))
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@ -181,7 +179,6 @@ IF_IFENSLAVE(APPLET(ifenslave, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_IFPLUGD(APPLET(ifplugd, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_IFUPDOWN(APPLET_ODDNAME(ifup, ifupdown, _BB_DIR_SBIN, _BB_SUID_DROP, ifup))
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IF_INETD(APPLET(inetd, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
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IF_INIT(APPLET(init, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_INOTIFYD(APPLET(inotifyd, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_INSMOD(APPLET(insmod, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_MODPROBE_SMALL(APPLET_ODDNAME(insmod, modprobe, _BB_DIR_SBIN, _BB_SUID_DROP, modprobe))
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@ -212,7 +209,6 @@ IF_LENGTH(APPLET_NOFORK(length, length, _BB_DIR_USR_BIN, _BB_SUID_DROP, length))
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IF_LESS(APPLET(less, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_SETARCH(APPLET_ODDNAME(linux32, setarch, _BB_DIR_BIN, _BB_SUID_DROP, linux32))
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IF_SETARCH(APPLET_ODDNAME(linux64, setarch, _BB_DIR_BIN, _BB_SUID_DROP, linux64))
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IF_FEATURE_INITRD(APPLET_ODDNAME(linuxrc, init, _BB_DIR_ROOT, _BB_SUID_DROP, linuxrc))
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IF_LN(APPLET_NOEXEC(ln, ln, _BB_DIR_BIN, _BB_SUID_DROP, ln))
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IF_LOAD_POLICY(APPLET(load_policy, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
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IF_LOADFONT(APPLET(loadfont, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
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@ -241,7 +237,6 @@ IF_MAN(APPLET(man, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_MATCHPATHCON(APPLET(matchpathcon, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
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IF_MD5SUM(APPLET_NOEXEC(md5sum, md5_sha1_sum, _BB_DIR_USR_BIN, _BB_SUID_DROP, md5sum))
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IF_MDEV(APPLET(mdev, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_MESG(APPLET(mesg, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_MICROCOM(APPLET(microcom, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_MKDIR(APPLET_NOFORK(mkdir, mkdir, _BB_DIR_BIN, _BB_SUID_DROP, mkdir))
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IF_MKFS_VFAT(APPLET_ODDNAME(mkdosfs, mkfs_vfat, _BB_DIR_SBIN, _BB_SUID_DROP, mkfs_vfat))
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@ -284,7 +279,6 @@ IF_PIPE_PROGRESS(APPLET(pipe_progress, _BB_DIR_BIN, _BB_SUID_DROP))
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IF_PIVOT_ROOT(APPLET(pivot_root, _BB_DIR_SBIN, _BB_SUID_DROP))
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IF_PKILL(APPLET_ODDNAME(pkill, pgrep, _BB_DIR_USR_BIN, _BB_SUID_DROP, pkill))
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IF_POPMAILDIR(APPLET(popmaildir, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
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IF_HALT(APPLET_ODDNAME(poweroff, halt, _BB_DIR_SBIN, _BB_SUID_DROP, poweroff))
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IF_PRINTENV(APPLET_NOFORK(printenv, printenv, _BB_DIR_BIN, _BB_SUID_DROP, printenv))
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IF_PRINTF(APPLET_NOFORK(printf, printf, _BB_DIR_USR_BIN, _BB_SUID_DROP, printf))
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IF_PS(APPLET(ps, _BB_DIR_BIN, _BB_SUID_DROP))
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@ -297,7 +291,6 @@ IF_READAHEAD(APPLET(readahead, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_READLINK(APPLET(readlink, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_READPROFILE(APPLET(readprofile, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
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IF_REALPATH(APPLET(realpath, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_HALT(APPLET_ODDNAME(reboot, halt, _BB_DIR_SBIN, _BB_SUID_DROP, reboot))
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IF_REFORMIME(APPLET(reformime, _BB_DIR_BIN, _BB_SUID_DROP))
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IF_RENICE(APPLET(renice, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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IF_RESET(APPLET(reset, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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@ -1515,36 +1515,6 @@ INSERT
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"$ ls -la /tmp/busybox*\n" \
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"-rw-rw-r-- 1 andersen andersen 554058 Apr 14 17:49 /tmp/busybox.tar.gz\n"
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#define halt_trivial_usage \
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"[-d DELAY] [-n] [-f]" IF_FEATURE_WTMP(" [-w]")
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#define halt_full_usage "\n\n" \
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"Halt the system\n" \
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"\nOptions:" \
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"\n -d SEC Delay interval" \
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"\n -n Do not sync" \
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"\n -f Force (don't go through init)" \
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IF_FEATURE_WTMP( \
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"\n -w Only write a wtmp record" \
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)
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#define poweroff_trivial_usage \
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"[-d DELAY] [-n] [-f]"
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#define poweroff_full_usage "\n\n" \
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"Halt and shut off power\n" \
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"\nOptions:" \
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"\n -d SEC Delay interval" \
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"\n -n Do not sync" \
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"\n -f Force (don't go through init)" \
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#define reboot_trivial_usage \
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"[-d DELAY] [-n] [-f]"
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#define reboot_full_usage "\n\n" \
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"Reboot the system\n" \
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"\nOptions:" \
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"\n -d SEC Delay interval" \
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"\n -n Do not sync" \
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"\n -f Force (don't go through init)" \
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#define hdparm_trivial_usage \
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"[OPTIONS] [DEVICE]"
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#define hdparm_full_usage "\n\n" \
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@ -1863,138 +1833,6 @@ INSERT
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"\n -R N Pause services after N connects/min" \
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"\n (default: 0 - disabled)" \
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#define init_trivial_usage \
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""
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#define init_full_usage "\n\n" \
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"Init is the parent of all processes"
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#define init_notes_usage \
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"This version of init is designed to be run only by the kernel.\n" \
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"\n" \
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"BusyBox init doesn't support multiple runlevels. The runlevels field of\n" \
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"the /etc/inittab file is completely ignored by BusyBox init. If you want\n" \
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"runlevels, use sysvinit.\n" \
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"\n" \
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"BusyBox init works just fine without an inittab. If no inittab is found,\n" \
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"it has the following default behavior:\n" \
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"\n" \
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" ::sysinit:/etc/init.d/rcS\n" \
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" ::askfirst:/bin/sh\n" \
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" ::ctrlaltdel:/sbin/reboot\n" \
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" ::shutdown:/sbin/swapoff -a\n" \
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" ::shutdown:/bin/umount -a -r\n" \
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" ::restart:/sbin/init\n" \
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"\n" \
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"if it detects that /dev/console is _not_ a serial console, it will also run:\n" \
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"\n" \
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" tty2::askfirst:/bin/sh\n" \
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" tty3::askfirst:/bin/sh\n" \
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" tty4::askfirst:/bin/sh\n" \
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"\n" \
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"If you choose to use an /etc/inittab file, the inittab entry format is as follows:\n" \
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"\n" \
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" <id>:<runlevels>:<action>:<process>\n" \
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"\n" \
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" <id>:\n" \
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"\n" \
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" WARNING: This field has a non-traditional meaning for BusyBox init!\n" \
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" The id field is used by BusyBox init to specify the controlling tty for\n" \
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" the specified process to run on. The contents of this field are\n" \
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" appended to \"/dev/\" and used as-is. There is no need for this field to\n" \
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" be unique, although if it isn't you may have strange results. If this\n" \
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" field is left blank, the controlling tty is set to the console. Also\n" \
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" note that if BusyBox detects that a serial console is in use, then only\n" \
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" entries whose controlling tty is either the serial console or /dev/null\n" \
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" will be run. BusyBox init does nothing with utmp. We don't need no\n" \
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" stinkin' utmp.\n" \
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"\n" \
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" <runlevels>:\n" \
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"\n" \
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" The runlevels field is completely ignored.\n" \
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"\n" \
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" <action>:\n" \
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"\n" \
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" Valid actions include: sysinit, respawn, askfirst, wait,\n" \
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" once, restart, ctrlaltdel, and shutdown.\n" \
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"\n" \
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" The available actions can be classified into two groups: actions\n" \
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" that are run only once, and actions that are re-run when the specified\n" \
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" process exits.\n" \
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"\n" \
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" Run only-once actions:\n" \
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"\n" \
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" 'sysinit' is the first item run on boot. init waits until all\n" \
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" sysinit actions are completed before continuing. Following the\n" \
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" completion of all sysinit actions, all 'wait' actions are run.\n" \
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" 'wait' actions, like 'sysinit' actions, cause init to wait until\n" \
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" the specified task completes. 'once' actions are asynchronous,\n" \
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" therefore, init does not wait for them to complete. 'restart' is\n" \
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" the action taken to restart the init process. By default this should\n" \
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" simply run /sbin/init, but can be a script which runs pivot_root or it\n" \
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" can do all sorts of other interesting things. The 'ctrlaltdel' init\n" \
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" actions are run when the system detects that someone on the system\n" \
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" console has pressed the CTRL-ALT-DEL key combination. Typically one\n" \
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" wants to run 'reboot' at this point to cause the system to reboot.\n" \
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" Finally the 'shutdown' action specifies the actions to taken when\n" \
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" init is told to reboot. Unmounting filesystems and disabling swap\n" \
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" is a very good here.\n" \
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"\n" \
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" Run repeatedly actions:\n" \
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"\n" \
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" 'respawn' actions are run after the 'once' actions. When a process\n" \
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" started with a 'respawn' action exits, init automatically restarts\n" \
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" it. Unlike sysvinit, BusyBox init does not stop processes from\n" \
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" respawning out of control. The 'askfirst' actions acts just like\n" \
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" respawn, except that before running the specified process it\n" \
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" displays the line \"Please press Enter to activate this console.\"\n" \
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" and then waits for the user to press enter before starting the\n" \
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" specified process.\n" \
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"\n" \
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" Unrecognized actions (like initdefault) will cause init to emit an\n" \
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" error message, and then go along with its business. All actions are\n" \
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" run in the order they appear in /etc/inittab.\n" \
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"\n" \
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" <process>:\n" \
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"\n" \
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" Specifies the process to be executed and its command line.\n" \
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"\n" \
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"Example /etc/inittab file:\n" \
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"\n" \
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" # This is run first except when booting in single-user mode\n" \
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" #\n" \
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" ::sysinit:/etc/init.d/rcS\n" \
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" \n" \
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" # /bin/sh invocations on selected ttys\n" \
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" #\n" \
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" # Start an \"askfirst\" shell on the console (whatever that may be)\n" \
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" ::askfirst:-/bin/sh\n" \
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" # Start an \"askfirst\" shell on /dev/tty2-4\n" \
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" tty2::askfirst:-/bin/sh\n" \
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" tty3::askfirst:-/bin/sh\n" \
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" tty4::askfirst:-/bin/sh\n" \
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" \n" \
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" # /sbin/getty invocations for selected ttys\n" \
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" #\n" \
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" tty4::respawn:/sbin/getty 38400 tty4\n" \
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" tty5::respawn:/sbin/getty 38400 tty5\n" \
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" \n" \
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" \n" \
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" # Example of how to put a getty on a serial line (for a terminal)\n" \
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" #\n" \
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" #::respawn:/sbin/getty -L ttyS0 9600 vt100\n" \
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" #::respawn:/sbin/getty -L ttyS1 9600 vt100\n" \
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" #\n" \
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" # Example how to put a getty on a modem line\n" \
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" #::respawn:/sbin/getty 57600 ttyS2\n" \
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" \n" \
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" # Stuff to do when restarting the init process\n" \
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" ::restart:/sbin/init\n" \
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" \n" \
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" # Stuff to do before rebooting\n" \
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" ::ctrlaltdel:/sbin/reboot\n" \
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" ::shutdown:/bin/umount -a -r\n" \
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" ::shutdown:/sbin/swapoff -a\n"
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#define inotifyd_trivial_usage \
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"PROG FILE1[:MASK]..."
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#define inotifyd_full_usage "\n\n" \
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@ -2651,13 +2489,6 @@ INSERT
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"the last line match .* to override this.)\n\n" \
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)
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#define mesg_trivial_usage \
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"[y|n]"
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#define mesg_full_usage "\n\n" \
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"Control write access to your terminal\n" \
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" y Allow write access to your terminal\n" \
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" n Disallow write access to your terminal"
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#define microcom_trivial_usage \
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"[-d DELAY] [-t TIMEOUT] [-s SPEED] [-X] TTY"
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#define microcom_full_usage "\n\n" \
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127
init/Config.src
127
init/Config.src
@ -7,131 +7,4 @@ menu "Init Utilities"
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INSERT
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config INIT
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bool "init"
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default y
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select FEATURE_SYSLOG
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help
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init is the first program run when the system boots.
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config FEATURE_USE_INITTAB
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bool "Support reading an inittab file"
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default y
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depends on INIT
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help
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Allow init to read an inittab file when the system boot.
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config FEATURE_KILL_REMOVED
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bool "Support killing processes that have been removed from inittab"
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default n
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depends on FEATURE_USE_INITTAB
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help
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When respawn entries are removed from inittab and a SIGHUP is
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sent to init, this option will make init kill the processes
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that have been removed.
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config FEATURE_KILL_DELAY
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int "How long to wait between TERM and KILL (0 - send TERM only)" if FEATURE_KILL_REMOVED
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range 0 1024
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default 0
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depends on FEATURE_KILL_REMOVED
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help
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With nonzero setting, init sends TERM, forks, child waits N
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seconds, sends KILL and exits. Setting it too high is unwise
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(child will hang around for too long and could actually kill
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the wrong process!)
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config FEATURE_INIT_SCTTY
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bool "Run commands with leading dash with controlling tty"
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default y
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depends on INIT
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help
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If this option is enabled, init will try to give a controlling
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tty to any command which has leading hyphen (often it's "-/bin/sh").
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More precisely, init will do "ioctl(STDIN_FILENO, TIOCSCTTY, 0)".
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If device attached to STDIN_FILENO can be a ctty but is not yet
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a ctty for other session, it will become this process' ctty.
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This is not the traditional init behavour, but is often what you want
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in an embedded system where the console is only accessed during
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development or for maintenance.
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NB: using cttyhack applet may work better.
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config FEATURE_INIT_SYSLOG
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bool "Enable init to write to syslog"
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default y
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depends on INIT
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config FEATURE_EXTRA_QUIET
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bool "Be _extra_ quiet on boot"
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default y
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depends on INIT
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help
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Prevent init from logging some messages to the console during boot.
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config FEATURE_INIT_COREDUMPS
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bool "Support dumping core for child processes (debugging only)"
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default y
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depends on INIT
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help
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If this option is enabled and the file /.init_enable_core
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exists, then init will call setrlimit() to allow unlimited
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core file sizes. If this option is disabled, processes
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will not generate any core files.
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config FEATURE_INITRD
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bool "Support running init from within an initrd (not initramfs)"
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default y
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depends on INIT
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help
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Legacy support for running init under the old-style initrd. Allows
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the name linuxrc to act as init, and it doesn't assume init is PID 1.
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This does not apply to initramfs, which runs /init as PID 1 and
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requires no special support.
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config INIT_TERMINAL_TYPE
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string "Initial terminal type"
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default "linux"
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depends on INIT
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help
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This is the initial value set by init for the TERM environment
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variable. This variable is used by programs which make use of
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extended terminal capabilities.
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Note that on Linux, init attempts to detect serial terminal and
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sets TERM to "vt102" if one is found.
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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
|
||||
|
||||
@ -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
|
||||
|
||||
@ -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-$(CONFIG_BOOTCHARTD) += bootchartd.o
|
||||
|
||||
//config:config BOOTCHARTD
|
||||
//config: bool "bootchartd"
|
||||
//config: default y
|
||||
|
||||
62
init/halt.c
62
init/halt.c
@ -7,6 +7,68 @@
|
||||
* Licensed under GPLv2, see file LICENSE in this source tree.
|
||||
*/
|
||||
|
||||
//applet:IF_HALT(APPLET(halt, _BB_DIR_SBIN, _BB_SUID_DROP))
|
||||
//applet:IF_HALT(APPLET_ODDNAME(poweroff, halt, _BB_DIR_SBIN, _BB_SUID_DROP, poweroff))
|
||||
//applet:IF_HALT(APPLET_ODDNAME(reboot, halt, _BB_DIR_SBIN, _BB_SUID_DROP, reboot))
|
||||
|
||||
//kbuild:lib-$(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"
|
||||
|
||||
|
||||
231
init/init.c
231
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>
|
||||
|
||||
18
init/mesg.c
18
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
|
||||
|
||||
Loading…
Reference in New Issue
Block a user