modutils: delete unused global variable

function                                             old     new   delta
modprobe_main                                        570     567      -3
insmod_main                                          101      98      -3
insmod_outputname                                      4       -      -4
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/2 up/down: 0/-10)             Total: -10 bytes
   text    data     bss     dec     hex filename
 816784     476    7892  825152   c9740 busybox_old
 816778     476    7888  825142   c9736 busybox_unstripped

networking/libiproute/*: code shrink by optimizing numeric conversions
 and other misc stuff

function                                             old     new   delta
print_tunnel                                         660     656      -4
format_host                                            5       -      -5
get_unsigned                                          70      54     -16
get_u32                                               70      54     -16
do_iplink                                           1173    1151     -22
get_prefix                                           417     393     -24
print_rule                                           800     771     -29
print_addrinfo                                      1374    1342     -32
print_route                                         1745    1709     -36
iprule_modify                                        905     866     -39
iproute_modify                                      1105    1048     -57
get_integer                                           70       -     -70
parse_args                                          1684    1440    -244
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/11 up/down: 0/-594)          Total: -594 bytes
   text    data     bss     dec     hex filename
 817378     476    7892  825746   c9992 busybox_old
 816784     476    7892  825152   c9740 busybox_unstripped

sendmail: document and fix usage of fd #4, fix check for helper failure.

function                                             old     new   delta
packed_usage                                       25663   25694     +31
signal_handler                                       191     215     +24
kill_helper                                           22      31      +9
launch_helper                                        194     184     -10
get_cred_or_die                                      142     129     -13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/2 up/down: 64/-23)             Total: 41 bytes

wget: --post-data support by Harald Kuthe (harald-tuxbox AT arcor.de)

function                                             old     new   delta
wget_main                                           2467    2793    +326
static.wget_longopts                                 110     122     +12
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 338/0)             Total: 338 bytes

modprobe: emit "can't open 'modules.dep': (errno)" instead of "module not found"
*: s/can't open %s/can't open '%s'/, it's better to use same string.

function                                             old     new   delta
do_modprobe                                          588     601     +13
config_file_action                                   339     345      +6
modprobe_main                                        565     570      +5
unable_to_open                                        14      16      +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 26/0)               Total: 26 bytes
   text    data     bss     dec     hex filename
 816800     476    7892  825168   c9750 busybox_old
 816812     476    7892  825180   c975c busybox_unstripped

ip: in "ip rule add from all table 1", "all" is taken as 0.0.0.0/32,
whereas "any" and "default" would be 0.0.0.0/0. They must be all 0.0.0.0/0.
Closes bug 57.

expr: a bit more robust handling of regexps with groups (closes bug 87)

printf: fix 1.12.0 breakage (from %*d fix). It was misinterpreting "*"

ls: implement -Q and -g (-g was accepted but ignored)

function                                             old     new   delta
print_name                                             -     198    +198
showfiles                                           1489    1508     +19
ls_options                                            30      31      +1
opt_flags                                            112     108      -4
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/1 up/down: 218/-4)            Total: 214 bytes

ls: do not follow links with -s (closes bug 33),
 display unsigned data with %XXu, not %XXd.

top: make it work again on 2.4 kernels (closes bug 125)

sendmail: improve help text

wget: fix --header handling

syslogd: create logfile with 0666, not 0600.

tr: update testsuite

tr: fix overflow in expand and complement, fix stop after [:class:],
 fix order of [:xdigit:], make tr require one param at least.

function                                             old     new   delta
expand                                              1743    1849    +106
tr_main                                              463     518     +55
complement                                            72      75      +3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 164/0)             Total: 164 bytes

tr: support [:xdigit:], fix handling of ranges and [x]'s.
 add testsuite entry for each of 3 bugs fixed.

function                                             old     new   delta
static.classes                                        73      82      +9
expand                                              1738    1743      +5
complement                                            74      72      -2
tr_main                                              472     463      -9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/2 up/down: 14/-11)              Total: 3 bytes

runsv: another tiny optimization

function                                             old     new   delta
startservice                                         297     288      -9
ctrl                                                 435     426      -9

runsv: small optimization
*: more paranoia around passing NULL to execl[e]

function                                             old     new   delta
custom                                               240     221     -19

modutils: oveflow fix

unzip: fix thinko with le/be conv and size (closes bug 129)
awk: make "struct global" hack more robust wrt alignment (closes bug 131)

login: fix buglet introduced by "simplification"

flash_eraseall.c: fix vda's breakage

- rephrase helptext for clarity

- improve wording

- by not calling getpagesize() twice we can save 2 bytes (walter harms)

- fix typo (thanks to Peter Kjellerstedt for noticing)

- Dual-license the config parser also under "LGLPv2.1 or later"
  (Vladimir Dronnikov)

make modutils compile again

depmod: accept and ignore -r (Linux kernle build needs this)

flash_eraseall: shrink

function                                             old     new   delta
flash_eraseall_main                                 1044    1006     -38

- add big busybox logo as transparent png

- bail out if screen resolution does not match PPM dimensions.
  Previously a 640x480 PPM on an e.g. 720x400 console would just segfault when
  reading the lines. While this bug should perhaps be fixed to handle such cases
  properly we just exit gracefully until somebody is willing to take care of it
  properly.

- document ppm header and skip whitespace

- update TODOs

- eliminate globals

- make it compile and shrink it a little bit (~-110 bytes)
   text    data     bss     dec     hex filename
   1533       4       0    1537     601 miscutils/flash_eraseall.o.old
   1415       4       0    1419     58b miscutils/flash_eraseall.o
- add some FIXMEs

- add flash_eraseall
This is the result after converting mtd-utils' flash_eraseall to BB.
The functionality given by this patch almost the same except that this
one does not support long options.
I needed this tool a system which does not have a lot of flash for RFS
and merging this into BB as the only way out.

[bigeasy@]$ ./scripts/bloat-o-meter bb_wo_fl bb_w_fl
function                                             old     new   delta
flash_eraseall_main                                    -    1072   +1072
show_progress                                          -      62     +62
packed_usage                                       25156   25176     +20
applet_names                                        1958    1973     +15
applet_main                                         2352    2360      +8
target_endian                                          -       4      +4
applet_nameofs                                       588     590      +2
applet_install_loc                                   147     148      +1
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 5/0 up/down: 1184/0)           Total: 1184 bytes
[bigeasy@]$ size miscutils/flash_eraseall.o
   text    data     bss     dec     hex filename
   1586       4       0    1590     636 miscutils/flash_eraseall.o

Signed-off-by: Benedigt Spranger <b.spranger@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

- PPMs can have comments in the header.
  Thanks to Denys for pointing that out. (~+7b)

ash: make dot command search current directory first, as bash does.

Make "shadowed" numeric config entries (ones which depend on
other options which are off) to have the value of 0, not "".

volume_id: abort early on read failures.
 should help with probing missing fdd's

init: fix compile breakage with '# CONFIG_FEATURE_KILL_REMOVED is not set'
runsvdir.c: fix typo in comment

- improve wording

- improve helptext

- misc untested shrinkage:
$ ./scripts/bloat-o-meter _bb_un.oorig busybox_unstripped
function                                             old     new   delta
fbsplash_main                                        595     985    +390
fb_drawimage                                         493       -    -493
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 390/-493)         Total: -103 bytes

$ size miscutils/fbsplash.o*
   text           data     bss     dec     hex filename
   2019              0       0    2019     7e3 miscutils/fbsplash.o.oorig
   1857              0       0    1857     741 miscutils/fbsplash.o.new

- improve helptext of obsolete devfs stuff..

- cosmetic typo in helptext

killall and sestatus also need ARGVN scanning

mdev: if /sys/class/block exists, don't scan /sys/block

function                                             old     new   delta
kill_main                                            706     884    +178

httpd: tiny optimization

httpd:

Kill config options by making them always on:

FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES

This makes httpd.c remotely readable - it had ~125 #ifdefs, now it has ~100.
The growth on a .config with all FEATURE_HTTPDs off is:

function                                             old     new   delta
send_file_and_exit                                     -     269    +269
parse_conf                                           683     763     +80
free_llist                                             -      32     +32
httpd_main                                           427     454     +27
sighup_handler                                         -      15     +15
handle_incoming_and_exit                            1110     905    -205
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 2/1 up/down: 423/-205)          Total: 218 bytes

sendmail: remove erroneous usage lines

crond,crontab: make cron directory location configurable

telnetd: do not advertise TELNET_LFLOW, we do not support
it properly.

udhcpd: add code which rejects lease files with suspicious or old timestamp.
*: s/time(0)/time(NULL)/g

login: small simplification by Walter Harms. -10 bytes

login: cleanup work by Walter Harms. No logic changes.

dhcpd,dumpleases: write and use 64-bit current time in lease file.
 without it, determination of remaining lease time is unreliable.
 Yes, it's costly in code size, but without it, dumpleases output
 is misleading!

function                                             old     new   delta
read_leases                                          143     282    +139
dumpleases_main                                      447     572    +125
write_leases                                         193     233     +40
hton64                                                29      58     +29
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 333/0)             Total: 333 bytes

modutils-24: code shrink

function                                             old     new   delta
helper_create_alloced_section                          -     117    +117
print_load_map                                       474     450     -24
bb_init_module_24                                   4615    4545     -70
obj_create_alloced_section                           131      30    -101
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/3 up/down: 117/-195)          Total: -78 bytes

ionice: new applet, adapted from Linux kernel' example by Walter Harms

   text    data     bss     dec     hex filename
1050316     924   10952 1062192  103530 busybox_old
1050758     924   10952 1062634  1036ea busybox_unstripped

brctl: fix compilation on 2.4.x kernels

init: remove wait() loop on restart, it may be dangerous

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

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

init: small correction in a comment

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

init: preparatory patch, no code changes

init: reinstate proper handling of !ENABLE_FEATURE_USE_INITTAB

init: reduce ifdef forest (specially for Rob's happiness)

- be gentle to syntax highlighting

- update Michele address

awk: in BEGIN section $0 should be "", not "0".

traceroute: allow -w NUM as small as 1

traceroute: rewrite. Do not emit raw IP packets, instead send UDP or ICMP
 packets and rely on the kernel to form IP headers, select source IP
 and interface. Doing it in traceroute wasn't working too good,
 and was bloating it.

function                                             old     new   delta
freehostinfo                                          29       -     -29
setsin                                                30       -     -30
in_cksum                                              57       -     -57
gethostinfo                                          165       -    -165
ifaddrlist                                           364       -    -364
traceroute_main                                     3713    2951    -762
------------------------------------------------------------------------------
(add/remove: 0/5 grow/shrink: 0/1 up/down: 0/-1407)         Total: -1407 bytes

traceroute: preparatory trivial cleanups

function                                             old     new   delta
traceroute_main                                     3932    3713    -219

tunctl: new applet by Vladimir

function                                             old     new   delta
tunctl_main                                            -     371    +371
packed_usage                                       25669   25799    +130
applet_names                                        1981    1988      +7
applet_main                                         1192    1196      +4
applet_nameofs                                       596     598      +2
applet_install_loc                                   149     150      +1
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/0 up/down: 515/0)             Total: 515 bytes

- add CONFIG_EXTRA_CFLAGS (thanks to keesj)
  This helps with remembering additional flags like e.g. cpu settings for
  people who did not configured their compiler to produce code for their cpu
  per default.

tar: stop changing net tarfile's mode, GNU tar doesn't do it

uname: use wider integer for option bits

uname: add support for -i and -o, fix printing of unknown -p
 value with -a option

function                                             old     new   delta
uname_main                                           166     185     +19
utsname_offset                                        12      16      +4
options                                              621     623      +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 25/0)               Total: 25 bytes

dhcpc: suppress "warning: 'timestamp_before_wait' might be used uninitialized

libbb: shrink linked list ops (by xmaks AT email.cz)

function                                             old     new   delta
llist_pop                                             33      29      -4
llist_unlink                                          47      28     -19
llist_add_to_end                                      50      31     -19
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-42)             Total: -42 bytes

depmod: fix -b option (by timo.teras AT iki.fi)

function                                             old     new   delta
xfreopen_write                                         -      35     +35
parse_module                                         346     353      +7
depmod_main                                          553     546      -7
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/1 up/down: 42/-7)              Total: 35 bytes

adduser: allow adding to group 0; don't _create_ /etc/shadow,
 only append data if it exists.

function                                             old     new   delta
adduser_main                                         642     667     +25

mdev: fix breakage caused by unified parser usage

- use https for bugzilla URLs

- isascii() is obsolescent in SUSv4 and furthermore looks redundant in this spot

do not whine if /sys/block does not exist ... embedded systems dont need stinkin block devices

sysctl: fix another corner case with "dots and slashes"

printf: make integer format strings print long long-sized values.

function                                             old     new   delta
printf_main                                          668     834    +166
bb_strtoll                                             -      84     +84
print_direc                                          391     431     +40
conv_strtoull                                          -      19     +19
conv_strtoll                                           -      19     +19
conv_strtoul                                          16       -     -16
conv_strtol                                           16       -     -16
------------------------------------------------------------------------------
(add/remove: 4/2 grow/shrink: 2/0 up/down: 342/-32)           Total: 296 bytes

udhcpd: disable opton to have absolute lease times in lease file
 (that does not work with dumpleases)
dumpleases: fix -a option.
networking/udhcp/*: code shrink, more compact static leases struture,
 better comments, etc

function                                             old     new   delta
find_free_or_expired_address                           -     147    +147
nobody_responds_to_arp                                 -      84     +84
read_opt                                             781     830     +49
dumpleases_main                                      435     447     +12
send_ACK                                             229     232      +3
read_staticlease                                      90      93      +3
addStaticLease                                        60      61      +1
getIpByMac                                            46      43      -3
reservedIp                                            31      20     -11
keywords                                             304     288     -16
send_offer                                           428     403     -25
write_leases                                         225     193     -32
read_leases                                          184     143     -41
read_yn                                               64       -     -64
find_address                                         191       -    -191
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 5/6 up/down: 299/-383)          Total: -84 bytes

website: announce 1.13.2 amd 1.12.4

dc: fix the "base 2" patch omission of base not being set

libbb: add bb_unsetenv (taken from hush).
udhcpc: stop filtering environment passed to the script.
crond: fix uncovered potential bug (failing unsetenv)
mdev: fix uncovered potential bug (failing unsetenv)
tcp, udpsvd: fix uncovered potential bug (failing unsetenv)

function                                             old     new   delta
safe_setenv                                            -      58     +58
bb_unsetenv                                            -      55     +55
builtin_unset                                        139     138      -1
tcpudpsvd_main                                      1843    1830     -13
free_strings_and_unsetenv                             87      53     -34
udhcp_run_script                                    1186    1133     -53
safe_setenv4                                          62       -     -62
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 0/4 up/down: 113/-163)          Total: -50 bytes

sysctl: fix gcc warning (false positive)

unexpand: fix incorrect expansion, add test for it

function                                             old     new   delta
expand_main                                          676     656     -20

s/an user/a user/

*: tweak error messages
sysctl: shrink; support recursing if name is a directory:
 "sysctl net.ipv4.conf". Patch by xmaks AT email.cz

   text    data     bss     dec     hex filename
 793659     504    7492  801655   c3b77 busybox_old
 793576     504    7492  801572   c3b24 busybox_unstripped