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760fc6debc
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363 Commits

Author SHA1 Message Date
Bogdan Purcareata
760fc6debc init: halt on SIGPWR too 
Most init processes implement a handler for SIGPWR that gracefully
stops all child processes when shutting down a machine. Some other
technologies rely on this signal - e.g. Busybox powered LXC
containers.

This patch makes busybox init halt when receiving SIGPWR.

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-11-26 13:54:48 +01:00
Denys Vlasenko
8b59b2c13e libbb: move nuke_str() from passwd into libbb 
function                                             old     new   delta
nuke_str                                               -      15     +15
ask_and_check_password_extended                      215     206      -9
init_main                                            781     771     -10
nuke_str                                              27       -     -27
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/2 up/down: 15/-46)            Total: -31 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-11-19 13:36:45 +01:00
Yuan-Hsiang Lee
b21bc80c76 init: fix illegal memory access when max message length is reached 
Signed-off-by: Yuan-Hsiang Lee <yhlee@ubnt.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-11-03 00:13:16 +01:00
Denys Vlasenko
730e4d8b52 init: better --help text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-10-12 04:52:22 +02:00
Paulius Zaleckas
9f07af6156 init: don't srop unterminated processes' entries during inittab reload 
This feature was removed in 72c99af

It is useful when process is removed from inittab and later added
back, but never terminated. It prevents init from spawning duplicate.

function                                             old     new   delta
check_delayed_sigs                                   176     182      +6

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-08-16 12:01:58 +02:00
Denys Vlasenko
d2e07bc16c init: don't use fixed size buffer for command 
We store init actions forever. 256 bytes per action means that
a typical inittab of ~10 commands uses 2.5k just to remember
command strings - which are usually _much_ shorter than 256 bytes.

At a cost of a bit more code, it's possible to allocate
only actually needed amount.

function                                             old     new   delta
init_exec                                            224     248     +24
new_init_action                                      140     142      +2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-08-16 11:48:48 +02:00
Denys Vlasenko
f958425451 init: remove special-case code for machines with less tham 1 MB of RAM. 
function                                             old     new   delta
init_main                                            920     781    -139

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-05-21 16:36:51 +02:00
Denys Vlasenko
2c0508b4fa examples/inittab: fix a few incorrect statements about init 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-03-29 14:35:44 +01:00
Denys Vlasenko
60cb48ca50 whitespace cleanup. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-01-14 15:57:44 +01:00
Denys Vlasenko
da2b2da6a7 init: add a segv debugging aid, disabled by default 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-01-30 12:15:22 +01:00
Denys Vlasenko
ef7aa46bc4 init: code shrink -4 bytes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-12-05 03:54:28 +01:00
Denys Vlasenko
beb860ac75 init: utmp update of DEAD_PROCESS was misplaced, and could be skipped. Fixing. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-12-05 03:31:05 +01:00
Denys Vlasenko
67905e2d7c *: work around sysinfo.h versus linux/*.h problems 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-07-26 13:42:12 +02:00
Denys Vlasenko
32176ccec4 init: fix a case where execv's 1st arg was wrong 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-21 05:07:43 +01:00
Denys Vlasenko
8d0e0cdadf move utmp.h include to libbb.h 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-01-25 23:21:46 +01:00
Denys Vlasenko
b9f2d9f7d9 mass removal of underscores from _BB_DIR_foo and _BB_SUID_foo 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-01-18 13:58:01 +01:00
Denys Vlasenko
6088e138e1 init: simpler handling of leading dash in commands 
function                                             old     new   delta
init_exec                                            233     219     -14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-12-25 23:58:42 +01:00
Denys Vlasenko
db5fe62b6d init: if PID!=1, show clearer error message. move usage text closer to main() 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-11-02 20:13:03 +01:00
Denys Vlasenko
3b060528a2 init: do not sleep forever on usage errors 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-25 00:40:32 +02:00
Denys Vlasenko
f2657a9968 init: do not clear CRTSCTS (fix from Debian bug 528560) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-24 02:04:10 +02:00
Denys Vlasenko
b1db09be5a init/*: move applet/kbuild/config/help bits into applet source files 
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2010-10-12 13:47:15 +02:00
Denys Vlasenko
0ef64bdb40 *: make GNU licensing statement forms more regular 
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-08-16 20:14:46 +02:00
Jeremie Koenig
1c05303fdc init: make the initial $TERM value configurable 
Signed-off-by: Jeremie Koenig <jk@jk.fr.eu.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-07-19 00:46:00 +02:00
Jeremie Koenig
714674e4da init,halt: portability improvements 
* make init and halt use the same RB_* constants for reboot()
* conditionalize the Linux-specific code

Inspired by init.init.diff from the Debian kFreeBSD patches at:
http://svn.debian.org/viewsvn/d-i/people/slackydeb/kfreebsd/busybox/1.14/debian

Signed-off-by: Jeremie Koenig <jk@jk.fr.eu.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-07-19 00:45:51 +02:00
Jeremie Koenig
f812eace18 init,loginutils: termios portability fixes 
Signed-off-by: Jeremie Koenig <jk@jk.fr.eu.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-07-19 00:45:42 +02:00
Denys Vlasenko
f8d8aa1cea libbb: add skip_dev_pfx() 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-04-06 18:50:05 +02:00
Denys Vlasenko
87fb72032e init: clear utmp entries for dead processes, if they (entries) exist 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-04-06 18:49:28 +02:00
Denys Vlasenko
d7171c1140 init: fix logically inverted FEATURE_EXTRA_QUIET check 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-12-15 00:34:59 +01:00
Denys Vlasenko
1a8de6f8a2 init: use applet_name instead of "init" - we can be linuxrc 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-12-14 03:16:28 +01:00
Denys Vlasenko
18f89128e5 init: for paranoid reasons, restore SIGCONT too. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-12-14 03:08:30 +01:00
Denys Vlasenko
bcc6ec9b7e init: fix "while true; do reboot; done" bug. +15 bytes. Closes bug 781 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-12-14 03:03:29 +01:00
Denys Vlasenko
6be918d0ae init: make FEATURE_EXTRA_QUIET more consistent. +1 byte 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-12-14 01:32:11 +01:00
Denys Vlasenko
6e54249e05 init: restore possibility to reload inittab even before we finish initialization 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-11-15 03:07:19 +01:00
Denys Vlasenko
6331cf059c *: use "can't" instead of "cannot" 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-11-13 09:08:27 +01:00
Denys Vlasenko
90a9904e9e remove some GNUisms. by Dan Fandrich (dan AT coneharvesters.com) 
function                                             old     new   delta
logdirs_reopen                                      1310    1308      -2
read_line_input                                     4757    4753      -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-6)               Total: -6 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-09-06 02:36:23 +02:00
Denys Vlasenko
3ed181b7ac init: make comment more understandable. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-07-19 14:29:18 +02:00
Denis Vlasenko
5981ba5843 init: test for vt terminal with VT_OPENQRY, 
assume that anything else is TERM=vt102, not TERM=linux.
 (Serial console test is less correct)
 Tentatively closes bug 195.

function                                             old     new   delta
init_main                                            946     919     -27
 2009-03-19 02:35:44 +00:00
Denis Vlasenko
4774179cb9 mail.c: more robust handling of SIGCHLD 
init: more robust signal handling
 2009-03-10 16:01:57 +00:00
Denis Vlasenko
93b38208d1 init: fix compile breakage with '# CONFIG_FEATURE_KILL_REMOVED is not set' 
runsvdir.c: fix typo in comment
 2009-02-14 20:58:13 +00:00
Denis Vlasenko
9ec0ecbfdd init: remove wait() loop on restart, it may be dangerous 2009-01-31 19:26:12 +00:00
Denis Vlasenko
4ae8a05b13 init: fix a bug where on reload order of entries might be wrong 
function                                             old     new   delta
run_shutdown_and_kill_processes                        -      97     +97
pause_and_low_level_reboot                             -      48     +48
run_actions                                           81     107     +26
restart_handler                                       56      81     +25
new_init_action                                      137     150     +13
run                                                  576     579      +3
open_stdio_to_tty                                    110      98     -12
check_delayed_sigs                                   195     170     -25
waitfor                                              354     318     -36
low_level_reboot                                      53       -     -53
kill_all_processes                                   115       -    -115
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 4/3 up/down: 212/-241)          Total: -29 bytes
 2009-01-31 18:55:54 +00:00
Denis Vlasenko
e35af56790 modutils-24: use xasprintf and xzalloc where appropriate, 
remove unreachanble code
build system: correct some dependencies in config system
init: convert one #if into if() - for Rob.

function                                             old     new   delta
obj_string_patch                                     136     129      -7
bb_init_module_24                                   4759    4615    -144
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-151)           Total: -151 bytes
 2009-01-31 14:22:24 +00:00
Denis Vlasenko
fc2a4fc2ba init: small correction in a comment 2009-01-31 01:07:05 +00:00
Denis Vlasenko
72c99af0b4 init: major improvement in documentation and signal handling. 
Lots of nasty, but hard to trip, races are fixed.

   text    data     bss     dec     hex filename
1038828     924   10932 1050684  10083c busybox_old
1038787     924   10932 1050643  100813 busybox_unstripped
 2009-01-31 01:03:45 +00:00
Denis Vlasenko
cab28aa7de init: preparatory patch, no code changes 2009-01-31 01:02:07 +00:00
Denis Vlasenko
6c62246a35 init: reinstate proper handling of !ENABLE_FEATURE_USE_INITTAB 2009-01-29 02:01:04 +00:00
Denis Vlasenko
b2b2c404b5 init: reduce ifdef forest (specially for Rob's happiness) 2009-01-28 23:56:31 +00:00
Denis Vlasenko
1bcdcd2ef0 init: do not eat last char in messages; 
do not print duplicate "init:" prefix to syslog
 2008-12-09 21:23:31 +00:00
Denis Vlasenko
a34b8a4d30 init: O_NONBLOCK needs more thought. reverted for now 2008-11-29 23:14:37 +00:00
Denis Vlasenko
3fa36e2350 *: a bit of code shrink 
function                                             old     new   delta
stop_handler                                          41      38      -3
sulogin_main                                         508     504      -4
got_cont                                               4       -      -4
cont_handler                                          11       -     -11
startservice                                         309     297     -12
processorstart                                       423     409     -14
tcpudpsvd_main                                      1861    1843     -18
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/5 up/down: 0/-66)             Total: -66 bytes
 2008-11-09 00:15:11 +00:00