bb_strtoXXX: close bug 4174 (potential use of buf[-1])

- warn about overlong lines in help-texts
  I initially bailed out with an error, but then that's a bit rough. Just warn to trick somebody into fixing them..

config help fixes

fix up callsites of config_read to check for >= 0

update of config file parser from Vladimir

sendmail: do not discard all headers

cpio: make long opts depend only on ENABLE_GETOPT_LONG

install: do not chown intermediate directories with install -d; shrink
 (by Natanael Copa)

function                                             old     new   delta
.rodata                                           171528  171511     -17
install_main                                         841     697    -144
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-161)           Total: -161 bytes

s/SELINIX/SELINUX/

libbb: get rid of statics in dump.c; code shrinks a lot too

function                                             old     new   delta
alloc_dumper                                           -      26     +26
hexdump_main                                         600     601      +1
static.done                                            1       -      -1
static.ateof                                           1       -      -1
bb_dump_vflag                                          1       -      -1
static.savp                                            4       -      -4
static.nextfs                                          4       -      -4
static.curp                                            4       -      -4
exitval                                                4       -      -4
endfu                                                  4       -      -4
bb_dump_length                                         4       -      -4
bb_dump_fshead                                         4       -      -4
bb_dump_blocksize                                      4       -      -4
_argv                                                  4       -      -4
bb_dump_add                                          365     358      -7
savaddress                                             8       -      -8
eaddress                                               8       -      -8
bb_dump_skip                                           8       -      -8
address                                                8       -      -8
bb_dump_dump                                        2748    2672     -76
next                                                 538     445     -93
------------------------------------------------------------------------------
(add/remove: 1/16 grow/shrink: 1/3 up/down: 27/-247)         Total: -220 bytes
   text    data     bss     dec     hex filename
 789458     607    6764  796829   c289d busybox_old
 789309     601    6696  796606   c27be busybox_unstripped

tee: fix infinite looping on open error (echo asd | tee "")

od,hexdump: fix bug where xrealloc may move pointer,
 leaving other pointers dangling (bug 4104).
 + many style fixes in libbb/dump.c.

mdev: support for serializing hotplug

function                                             old     new   delta
mdev_main                                            503     647    +144

sleep: make fractional seconds separately selectable in .config

libbb: document plans to speed up line-based input

libbb: unified config parser (By Vladimir Dronnikov)
mdev: use it

function                                             old     new   delta
config_read                                            -     400    +400
config_open                                            -      43     +43
config_close                                           -       9      +9
qrealloc                                              33      36      +3
compare_keys                                         735     737      +2
xstrtoull_range_sfx                                  296     295      -1
qgravechar                                           109     106      -3
get_address                                          181     178      -3
next_token                                           928     923      -5
sv_main                                             1228    1222      -6
find_main                                            418     406     -12
next_field                                            32       -     -32
make_device                                         1269    1184     -85
------------------------------------------------------------------------------
(add/remove: 3/1 grow/shrink: 2/7 up/down: 457/-147)          Total: 310 bytes

sendmail: do not ignore CC; accept to: and cc: case-insensitively.
 +20 bytes.

libbb: experimental faster string reading routines.

comm: almost total rewrite; add testsuite

function                                             old     new   delta
writeline                                            128     125      -3
comm_main                                            540     239    -301
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-304)           Total: -304 bytes

ls: fix a bug where we may use uninintialized variable

tee: "-" is a name for stdout, handle it that way

insmod: users report that "|| defined(__powerpc__)" is missing

hush: fix "... pattern) cmd;; esac" case

hush: delete unused field in struct child.
 reinstate needed check for invalid syntax.
 document command parsing in hush_doc.txt.

hush: add case statement support. It is incomplete and disabled for now.
 costs ~300 bytes when enabled.

ash: small code shrink

libbb: shrink print_login_issue (by Vladimir Dronnikov)

function                                             old     new   delta
print_login_issue                                    469     435     -34

whitespace fixes

whitespace fixing script

sleep: if FANCY && DESKTOP, support fractional seconds, minutes,
 hours and so on. It's coreutils compat. bloatcheck is atrocious :(

function                                             old     new   delta
sleep_main                                            71     362    +291
bb_strtod                                              -     127    +127
make_device                                         1269    1294     +25
getoptscmd                                           708     713      +5
switch_root_main                                     402     401      -1
display_speed                                         90      85      -5
show_entry                                           295     289      -6
parse_expr                                           841     833      -8
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/4 up/down: 448/-20)           Total: 428 bytes

*: add FAST_FUNC markers

function                                             old     new   delta
getopt_mk_fifo_nod                                    73      70      -3
mv_main                                              505     501      -4
cp_mv_stat2                                           79      73      -6
cp_main                                              266     257      -9
cp_mv_stat                                            22      10     -12
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/5 up/down: 46/-80)            Total: -34 bytes

mv: fix a case when we move dangling symlink

mdev: check for "/block/" substring for block dev detection

function                                             old     new   delta
make_device                                         1294    1269     -25

mdev: if device was moved at creation, at removal coreectly remove
 it from moved location and also remove symlinks to it

function                                             old     new   delta
build_alias                                            -      78     +78
mdev_main                                            505     503      -2
make_device                                         1300    1294      -6
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/2 up/down: 78/-8)              Total: 70 bytes

fuser: a bit of safety in scanf

cpio: internalize archive_xread_all_eof. add a few paranoia checks
 for corrupted cpio files.
modprobe-small: remove stray include
route: small code shrink

function                                             old     new   delta
get_header_cpio                                      958     980     +22
archive_xread_all_eof                                 33       -     -33
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 22/-33)            Total: -11 bytes

switch_root: shrink

function                                             old     new   delta
switch_root_main                                     402     401      -1
rootdev                                                8       -      -8
delete_contents                                      226     179     -47
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/2 up/down: 0/-56)             Total: -56 bytes

ash: fix segfault in "command -v"

cpio: on unpack, limit filename length to 8k; shorten comment a bit

Announce 1.11.1

cpio: testsuite for bugs.debian.org/cgi-bin/bugreport.cgi?bug=466771
 which was fixed in proevious commit

cpio: support some long options; document GNU options

testsuite: uniformly use $ECHO with -n -e

time: don't segfault with no arguments

taskset: fix some careless code in both fancy and non-fancy cases.
 -5 bytes for fancy, +5 for non-fancy

build system: re-add mistakenly deleted script

website: announce updated HOWTO

fix compile failures resulting from last few commits

fix typo in config help text

dpkg_deb: slight code shrink
ar: reuse existing ar unpacking code
get_header_tar: handle autodetection for tiny .tar.gz files too
unarchive.h: do not include CONFIGed out things

function                                             old     new   delta
get_header_tar                                      1521    1534     +13
dpkg_deb_main                                        400     380     -20
ar_main                                              260     196     -64
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/2 up/down: 13/-84)            Total: -71 bytes

open_transformer: do not return fd, it does not change
libbb: adopt zipped read from modprobe-small

function                                             old     new   delta
getoptscmd                                           708     713      +5
qgravechar                                           106     109      +3
huft_build                                          1165    1168      +3
tr_main                                              474     472      -2
open_transformer                                      91      89      -2
evalvar                                             1376    1374      -2
rpm_main                                            1691    1688      -3
qrealloc                                              36      33      -3
get_header_tar_lzma                                   55      52      -3
get_header_tar_gz                                    100      97      -3
get_header_tar_bz2                                    55      52      -3
get_header_tar_Z                                      89      86      -3
find_main                                            418     406     -12
prepare                                              302     283     -19
xmalloc_open_zipped_read_close                       161     135     -26
xmalloc_read                                         248     199     -49
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/13 up/down: 11/-130)         Total: -119 bytes

modprobe-small: make depmod compatible with kernel build.
 three last commits' sizes combined:

function                                             old     new   delta
find_alias                                           218     612    +394
load_dep_bb                                            -     310    +310
modprobe_main                                        289     380     +91
copy_stringbuf                                         -      40     +40
process_module                                       637     655     +18
reset_stringbuf                                        -      15     +15
parse_module                                         333     334      +1
append                                                84      85      +1
fileAction                                           832     819     -13
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 5/1 up/down: 870/-13)           Total: 857 bytes

modprobe-small: add depfile creation

modprobe-small: add depfile loading

website: add 'Laptop Computers' to sponsors page

whitespace fix

build system: libbusybox cannot be static

fdisk: fix compile failure

hush: compile fixes for !LOOPS case

buld system: suppress a warning

last: fix ctime(ptr) ptr type mismatch

libbb/mtab: fix xrealloc_vector fallout

- fix typo (Cristian Ionescu-Idbohrn)

modprobe-small: preparatory patch for modprobe.dep.bb creation patches,
 Code size impact ~0.

libbb: use improved xmalloc_read() from modprobe-small
who: fix compile breakage on some systems
modprobe-small: improve Config help text wording

add xrealloc_vector.c

website: return HOWTO link and GPL violations address to the top
 of the page

libbb: introduce and use xrealloc_vector

function                                             old     new   delta
xrealloc_vector_helper                                 -      51     +51
create_list                                           84      99     +15
getopt_main                                          690     695      +5
passwd_main                                         1049    1053      +4
get_cached                                            85      89      +4
msh_main                                            1377    1380      +3
add_match                                             42      41      -1
read_lines                                           720     718      -2
grave                                               1068    1066      -2
fill_match_lines                                     143     141      -2
add_to_dirlist                                        67      65      -2
add_input_file                                        49      47      -2
act                                                  252     250      -2
fsck_main                                           2252    2246      -6
man_main                                             765     757      -8
bb_internal_initgroups                               228     220      -8
cut_main                                            1052    1041     -11
add_edge_to_node                                      55      43     -12
dpkg_main                                           3851    3835     -16
ifupdown_main                                       2202    2178     -24
sort_main                                            838     812     -26
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/15 up/down: 82/-124)          Total: -42 bytes

ifupdown: /etc/network/interfaces can have comments with leading blanks

mount: testsuite for "-o mand"

mount: support for "-o mand"

mdev: reinstate "follow symlinks" flag, this time with explanation

modprobe-small: match aliases with fnmatch(), making
 shell pattern-specified alias names in module bodies work.

modprobe-small: fix debug leftover

hush: support "for if in do done then; do echo $if; done" case

function                                             old     new   delta
done_pipe                                             83      95     +12
parse_stream                                        1758    1764      +6
done_word                                            674     647     -27
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 18/-27)             Total: -9 bytes

mdev: do not follow symlinks in /sys (as was intended prior to rev 18811).
If this breaks things, please document why!
mdev,init: use shared code for fd sanitization

function                                             old     new   delta
bb_daemonize_or_rexec                                155     172     +17
mdev_main                                            500     505      +5
init_main                                            907     856     -51
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 22/-51)            Total: -29 bytes

hush: support "for v; do ... done" syntax (implied 'in "$@"')

hush: fix a case where "$@" must expand to no word at all

*: rename ATTRIBUTE_XXX to just XXX.

man: fix inverted cat/man bool variable

man: code shrink

function                                             old     new   delta
man_main                                             725     765     +40
show_manpage                                         112       -    -112
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 40/-112)           Total: -72 bytes

man: support cat pages too (by Jason Curl <jcurlnews AT arcor.de>)

function                                             old     new   delta
show_manpage                                           -     112    +112
run_pipe                                              89     102     +13
man_main                                             721     725      +4

man: fix missed NULL termination of an array

function                                             old     new   delta
man_main                                             741     721     -20

libbb/recursive_action.c: fix slight error in prev commit

modutils: optional modutils-small by Vladimir Dronnikov.
 15kb smaller than standard one.
libbb/recursive_action.c: commented-out code for aborting the scan.

awk: another smallish code shrink

webpage: fix typos

uname,individual: fix improper printf usage
uname,awk: small code shrink

function                                             old     new   delta
uname_main                                           175     166      -9
nvalloc                                              167     157     -10
evaluate                                            6381    6370     -11
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-30)             Total: -30 bytes

- fix trivial exploit vector when setXid

sendmail: fix wrong vfork usage here too
*: shorten error texts

function                                             old     new   delta
launch_helper                                          -     151    +151
vfork_or_die                                          20       -     -20
sendgetmail_main                                    1946    1848     -98
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/1 up/down: 151/-118)           Total: 33 bytes

revert last two commits. vfork cannot be used in subroutine,
it trashes stack on return

- wrap overlong lines

*: introduce and use xfork()

function                                             old     new   delta
xfork                                                  -      20     +20
msh_main                                            1377    1380      +3
mod_process                                          455     446      -9
forkexit_or_rexec                                     30      17     -13
expand_variables                                    1434    1421     -13
open_transformer                                      91      76     -15
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/4 up/down: 23/-50)            Total: -27 bytes

add missing file

*: introduce and use xvfork()

function                                             old     new   delta
time_main                                           1052    1285    +233
crontab_main                                         623     856    +233
ifupdown_main                                       2202    2403    +201
xvfork                                                 -      20     +20
passwd_main                                         1049    1053      +4
grave                                               1068    1066      -2
script_main                                          935     921     -14
vfork_or_die                                          20       -     -20
vfork_compressor                                     206     175     -31
open_as_user                                         109       -    -109
popen2                                               218       -    -218
edit_file                                            910     690    -220
run_command                                          268       -    -268
------------------------------------------------------------------------------
(add/remove: 1/4 grow/shrink: 4/4 up/down: 691/-882)         Total: -191 bytes

ssd: fix missed + in prev commit

ssd: do not stat -x EXECUTABLE, it is not needed anymore
ssd: use PATH
ssd: fix -a without -x case
ssd: fix help text
ssd: CLOSE_EXTRA_FDS in MMU case too
ssd: add testsuite

awk: fix a case with multiple -f options. simplify -f file reading.

function                                             old     new   delta
parse_expr                                           833     841      +8
qrealloc                                              33      36      +3
next_input_file                                      203     198      -5
afopen                                                22       -     -22
ftello                                                41       -     -41
ftell                                                 41       -     -41
__GI_ftell                                            41       -     -41
awk_main                                            1002     944     -58
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 2/2 up/down: 11/-208)          Total: -197 bytes
   text    data     bss     dec     hex filename
 804232     610    6804  811646   c627e busybox_old
 804120     610    6804  811534   c620e busybox_unstripped

crond: use execlp instead of execl

sendmail: from Vladimir:
Here comes the third part of compatibility patch for sendmail.
* Introduced new safe_getdomainname() -- will it be useful?
* Fixed SEGV if sender address is missed. Should snoop for sender address in mail headers?
* More compat: use HOSTNAME instead of HOST when no server is explicitly specified.
* crond: fixed mail recipient address.

function                                             old     new   delta
safe_getdomainname                                     -      56     +56
sendgetmail_main                                    1937    1946      +9
grep_file                                            846     850      +4
crond_main                                          1423    1425      +2
xstrtoull_range_sfx                                  295     296      +1
utoa_to_buf                                          110     108      -2
passwd_main                                         1053    1049      -4
sv_main                                             1234    1228      -6
parse_expr                                           841     833      -8
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/4 up/down: 72/-20)             Total: 52 bytes