apply post-1.12.1 patches, bump version to 1.12.2

apply post-1.12.0 fixes, bump version to 1.12.1

This is 1.12.0

getopt32: do not return pointer to alloca() areas

envdir: fix "envdir with no params" case

findfs: make it use setuid-ness of busybox binary

fsck: use getmntent_r instead of open-coded parsing. By Vladimir

function                                             old     new   delta
create_fs_device                                     125     158     +33
parse_word                                            41       -     -41
parse_escape                                          55       -     -55
fsck_main                                           2246    1893    -353
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 1/1 up/down: 33/-449)          Total: -416 bytes

linedit: fix use-after-free

libbb: getopt32() should not ever touch argv[0] (even read)

libbb: fix mishandling of "all argv are opts" in getopt32()

function                                             old     new   delta
top_main                                            1100    1095      -5
getopt32                                            1398    1361     -37
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-42)             Total: -42 bytes

ifupdown: fixes for shutdown of DHCP-managed interfaces
 from Wade Berrier <wberrier AT gmail.com>

Updating defconfig, fixing a typo in Config.in

- add new applet rdev (Grant Erickson)
- fixes and shrink (me)

showkey: new applet by Vladimir

setfont: new applet by Vladimir

libbb: use ptsname_r, it's smaller

function                                             old     new   delta
xgetpty                                               91      81     -10
ptsname                                               33       -     -33

   text    data     bss     dec     hex filename
 793828     592    6692  801112   c3958 busybox_old
 793796     592    6660  801048   c3918 busybox_unstripped

ash: fix "(cat < file)" hang introduced by rev 22944.

cut: fix buffer overflow (bug 4544).

chpst: fix "envdir dir" case (bug 4574).

arp: without -H <type>, assume "ether". closes 4564

install: fix long option not taking params (bug 4584)

mkdir: fix "uname 0222; mkdir foo/bar" case
 (by Doug Graham <dgraham AT nortel.com>)

function                                             old     new   delta
bb_make_directory                                    291     280     -11

nmeter: fix read past the end if a buffer. Closes 4594

ifupdown: fixes for custom MAC address, by Wade Berrier <wberrier AT gmail.com>

sendmail: work around (bogus) gcc warning

fix byte-swapping of compressed help on big-endian machines

optimize config_read() (by Timo Teras <timo.teras AT iki.fi>)

function                                             old     new   delta
bb_get_chunk_with_continuation                         -     176    +176
find_pair                                            169     187     +18
...
process_stdin                                        443     433     -10
config_read                                          549     456     -93
bb_get_chunk_from_file                               139       7    -132
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 7/7 up/down: 215/-254)          Total: -39 bytes

grep: option to use GNU regex matching instead of POSIX one.
 This fixes problems with NULs in files being scanned, but
 costs +800 bytes. The same can be done to sed (TODO).

- support relatime / norelatime

- fix typo

modprobe-small: fix infinite looping, by Timo Teras

fix bug 4464 for real. I am dumb.

modprobe: semi-trivial code shrink

function                                             old     new   delta
build_dep                                            870     859     -11
already_loaded                                       134     112     -22
modprobe_main                                        449     368     -81
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-114)           Total: -114 bytes

*: use get_console_fd() as appropriate, and make it fail on open error -
 get_console_fd_or_die().

function                                             old     new   delta
get_console_fd_or_die                                  -     163    +163
loadkmap_main                                        211     201     -10
loadfont_main                                        440     430     -10
dumpkmap_main                                        218     208     -10
kbd_mode_main                                        158     146     -12
setkeycodes_main                                     156     143     -13
get_console_fd                                       163       -    -163
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/5 up/down: 163/-218)          Total: -55 bytes

kbd_mode: remove erroneous & from &var. By Vladimir.

libbb: fix thinko in latest xrealloc_vector change

- reinstate commented out _FORTIFY_SOURCE that was somehow dropped by Denys?

randomconfig fixes

man: teach it to use .lzma if requested by .config
man: fix a case when a full pathname to manpage is given

man: yet another fixlet to "manpage link" code

man: fixlet for man links

man: add handling of "man links", by Ivana Varekova <varekova AT redhat.com>

function                                             old     new   delta
run_pipe                                             102     354    +252
show_manpage                                           -     126    +126
man_main                                             705     615     -90
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/1 up/down: 378/-90)           Total: 288 bytes

*: refactor handling of archived files. "tar f file.tar.lzma" now works too.

function                                             old     new   delta
unpack_Z_stream                                        -    1229   +1229
open_zipped                                            -     176    +176
unpack_bz2_stream_prime                                -      60     +60
tar_main                                             642     677     +35
find_main                                            406     418     +12
sv_main                                             1222    1233     +11
decode_format_string                                 829     837      +8
cmp_main                                             641     649      +8
popstring                                            134     140      +6
filter_accept_list_reassign                          120     125      +5
parse_and_put_prompt                                 800     804      +4
passwd_main                                         1053    1049      -4
make_new_name_gunzip                                 119     114      -5
rpm_main                                            1688    1670     -18
prepare                                              302     283     -19
xmalloc_open_zipped_read_close                       135      61     -74
uncompress                                          1229       -   -1229
------------------------------------------------------------------------------
(add/remove: 3/1 grow/shrink: 8/5 up/down: 1554/-1349)        Total: 205 bytes

- don't free user-supplied string (via -e)
- fix helptext

function                                             old     new   delta
chpasswd_main                                        300     319     +19
packed_usage                                       24352   24344      -8
.rodata                                           122227  122195     -32
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/2 up/down: 19/-40)            Total: -21 bytes

whitespace fixes, no code changed

xargs: fix -e default to match newer GNU xargs, add SUS mandated -E.
 closes bug 4414

modprobe: use buffering line reads (fgets) instead of reads().
libbb: remove reads()

function                                             old     new   delta
include_conf_file_act                                961     980     +19
localcmd                                             282     284      +2
already_loaded                                       155     151      -4
in_cksum                                              58      53      -5
modprobe_main                                       1630    1624      -6
reads                                                129       -    -129
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 2/3 up/down: 21/-144)          Total: -123 bytes

fix some testsuite false positives

libbb: make xrealloc_vector zero out the realloc'ed tail

function                                             old     new   delta
xrealloc_vector_helper                                51      76     +25
man_main                                             712     705      -7
act                                                  250     234     -16
create_list                                           91      70     -21
getopt_main                                          695     664     -31
load_dep_bb                                          281     248     -33
fileAction                                           744     709     -35
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/6 up/down: 25/-143)          Total: -118 bytes

hush: fix mishandling of a'b'c=fff as assignments. They are not.

function                                             old     new   delta
parse_stream                                        1920    2004     +84
done_word                                            715     752     +37
parse_and_run_stream                                 328     333      +5
builtin_exec                                          25      29      +4
pseudo_exec_argv                                     138     139      +1
run_list                                            2006    1999      -7
is_assignment                                        215     134     -81
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/2 up/down: 131/-88)            Total: 43 bytes

hush: remove a comment about already fixed bug

makedevs: shrink by Vladimir

function                                             old     new   delta
makedevs_main                                       1071    1049     -22
packed_usage                                       24744   24708     -36

ssd: fix -K/-S mixup in help text

xargs: update help text

xargs: fix xargs -e; added test for that

halt: signal init regardless of ENABLE_INIT

nameif: shrink (by Vladimir)

function                                             old     new   delta
nameif_main                                          668     636     -32

makedevs: fix help text discrepancies

makedevs: shrink (by Vladimir); testsuite

function                                             old     new   delta
makedevs_main                                       1153    1071     -82

hush: support $_NUMBERS variable names

hush: fix "case ... in <newline> word)..."

hush: support "pattern1|pattern2...)" in case statements

parse_stream                                        1847    1861     +14
run_list                                            1995    2006     +11

tr: fix yet another access past the end of a string (bug 4374)

chpst: large code shrink by Vladimir

function                                             old     new   delta
chpst_main                                          1058    1357    +299
euidgid                                               56       -     -56
suidgid                                               59       -     -59
slimit                                               208       -    -208
packed_usage                                       24638   24420    -218
edir                                                 375       -    -375
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 1/1 up/down: 299/-916)         Total: -617 bytes

ash: bash compat: "shift $BIGNUM" is equivalent to "shift 1"

hush: trivial code shrink

function                                             old     new   delta
builtin_continue                                      48      22     -26

hush: use G.xxx instead of #define xxx G.xxx. We have too many globals
 there and #defines get messy. Remove one write-only G.variable.

randomconfig fix

hush: small fix for repeated continue and fix for wrong loop depth count
 after Ctrl-C; with testcase for first one

hush: fix inverted check (was making all break's to act as "break 99999")

hush: fix break'ing out of {} and () groups; with testcase

function                                             old     new   delta
builtin_break                                         93     129     +36
builtin_continue                                      21      47     +26
run_list                                            1973    1976      +3

randomconfig fixes

hush: add #defines to switch off break/continue if loops are not supported
*: remove a few inline keywords
no code changes

modprobe: support for /etc/modprobe.d, by Timo Teras.

function                                             old     new   delta
include_conf_file_act                                  -     929    +929
include_conf_recursive                                 -      30     +30
include_conf_file2                                     -      30     +30
include_conf_file                                      -      14     +14
include_conf_dir_act                                   -      14     +14
build_dep                                           1011     875    -136
include_conf                                         922       -    -922
------------------------------------------------------------------------------
(add/remove: 5/1 grow/shrink: 0/1 up/down: 1017/-1058)        Total: -41 bytes

libbb: dump: do not use uninitialized memory. close bug 4364.

tr: fix "tr [=" case. Closes bug 4374.

function                                             old     new   delta
expand                                              1701    1738     +37
tr_main                                              472     474      +2

hush: fix "while false; ..." exitcode; add testsuites

hush: support "break N" and "continue N"
 fix non-detection of builtins and applets in "v=break; ...; $v; ..." case
 add testsuite entries for the above

function                                             old     new   delta
builtin_break                                         12      93     +81
run_list                                            1948    1971     +23
builtin_continue                                      12      21      +9
pseudo_exec_argv                                     132     138      +6
builtin_exec                                          23      25      +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 121/0)             Total: 121 bytes

hush: implement break and continue

function                                             old     new   delta
bltins                                               252     276     +24
builtin_continue                                       -      12     +12
builtin_break                                          -      12     +12
static.version_str                                    18      17      -1
run_list                                            1984    1948     -36
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 1/2 up/down: 48/-27)             Total: 11 bytes

hush: in run_list(), some loop_top ops seems to be superfluous.
 comment them out. Also, use separate temp variable
 for verification loop, helps gcc to optimize better.

function                                             old     new   delta
run_list                                            2039    1984     -55

hush: in run_list(), last_cond_code seems to be superfluous. comment it out

function                                             old     new   delta
run_list                                            2055    2039     -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-16)             Total: -16 bytes

hush: explain run_list() in detail; small optimizations

function                                             old     new   delta
hush_main                                            785     786      +1
expand_variables                                    1447    1448      +1
builtin_exit                                          48      49      +1
builtin_eval                                          54      55      +1
run_list                                            2075    2055     -20
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/1 up/down: 4/-20)             Total: -16 bytes

documentation fix

hush: finish and enable optional case...esac support. Code size cost:

function                                             old     new   delta
run_list                                            1891    2075    +184
parse_stream                                        1764    1847     +83
expand_strvec_to_string                                -      83     +83
done_word                                            647     715     +68
static.reserved_list                                 144     168     +24
static.reserved_match                                  -      12     +12
done_pipe                                             95     105     +10
builtin_exit                                          48      46      -2
builtin_eval                                         127      54     -73
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 5/2 up/down: 464/-75)           Total: 389 bytes

fbset: shrink code a bit more

fbset: code shrink

function                                             old     new   delta
ss                                                     -      33     +33
fbset_main                                          1968    1844    -124
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 33/-124)           Total: -91 bytes

netstat: code shrink

function                                             old     new   delta
print_inet_line                                        -     193    +193
scan_inet_proc_line                                    -     130    +130
unix_do_one                                          519     503     -16
do_info                                              145      97     -48
netstat_main                                         601     548     -53
tcp_do_one                                           462      61    -401
raw_do_one                                           513     107    -406
udp_do_one                                           533     119    -414
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/6 up/down: 323/-1338)       Total: -1015 bytes

style fix, no code changes

netstat: optional -p support by L. Gabriel Somlo <somlo AT cmu.edu>

Without FEATURE_NETSTAT_PRG:
function                                             old     new   delta
recursive_action                                     416     425      +9
tcp_do_one                                           420     428      +8
udp_do_one                                           492     499      +7
raw_do_one                                           472     479      +7
expand                                              1697    1701      +4
netstat_main                                         489     492      +3
unix_do_one                                          486     488      +2
flags                                                  1       -      -1
qgravechar                                           109     106      -3
net_conn_line                                          4       -      -4
bbunpack                                             391     383      -8
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 7/2 up/down: 40/-16)             Total: 24 bytes

With FEATURE_NETSTAT_PRG:
file_act                                               -     213    +213
dir_act                                                -     192    +192
netstat_main                                         489     601    +112
prg_cache_get                                          -      50     +50
tcp_do_one                                           420     462     +42
udp_do_one                                           492     533     +41
raw_do_one                                           472     513     +41
unix_do_one                                          486     519     +33
recursive_action                                     416     425      +9
expand                                              1697    1701      +4
flags                                                  1       -      -1
qgravechar                                           109     106      -3
net_conn_line                                          4       -      -4
bbunpack                                             391     383      -8
packed_usage                                       24586   24572     -14
------------------------------------------------------------------------------
(add/remove: 3/2 grow/shrink: 7/3 up/down: 737/-30)           Total: 707 bytes

whitespace fix

man: a forgotten chunk of lask commit (config file parser fixes)

fix several problems with config parser:
 a bug where it underflows the string
 a bug where it never frees parser_t struct
make read_config() return 0 if parser is NULL,
 make config_close() accept and ignore NULL parser -
 eliminates many if() blocks
reverse the sense of parser bit flags - negative flags
 are harder to grok.
hexdump: revert the change to use config parser, it is BIGGER
 and also requires additional quirks in parser
*: explicitly use PARSER_NORMAL instead of 0

function                                             old     new   delta
login_main                                          1575    1596     +21
config_close                                          18      29     +11
bbunpack                                             383     391      +8
qgravechar                                           106     109      +3
rtnl_tab_initialize                                  121     117      -4
expand                                              1697    1693      -4
man_main                                             717     712      -5
nameif_main                                          674     668      -6
hexdump_main                                         597     591      -6
read_config                                          217     209      -8
dnsd_main                                           1478    1470      -8
sysctl_main                                          203     189     -14
config_open2                                          44      25     -19
make_device                                         1177    1141     -36
config_read                                          597     549     -48
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/11 up/down: 43/-158)         Total: -115 bytes

man: ignore (not complain) lines with less than 2 tokens
 in config file

tr: fix "access past the end of a string" bug 4354

mdev: do not complain if mdev.conf does not exist;
 use #if to prevent gcc from generating dead code
 (sadly, it's more ugly this way)

unzip: move check for unsupported zip features to better place

unzip: give better error message when presented with unsupported
 zip file. Add zip documentation and an example of file we cant
 (yet) unpack.

ash: add slightly different testcase

fix example of vcsa creation

ash: fix testcase to not sleep for whole 10 seconds,
 gets annoying pretty fast. Also fix wrong message there.