httpd: add optional support for error pages
(by Pierre Metras <genepi@sympatico.ca>)

runit/*: get rid of tai[a] time abstraction, it's too bloaty.

   text    data     bss     dec     hex filename
 772537    1058   11092  784687   bf92f busybox.t0/busybox
 772459    1058   11060  784577   bf8c1 busybox.t1/busybox
 772326    1058   11028  784412   bf81c busybox.t2/busybox
 772158    1058   10980  784196   bf744 busybox.t3/busybox
 771490    1055   10988  783533   bf4ad busybox.t4/busybox

removed stray debugging comments

max_option_length[] holds small ints, uint8_t is enough

function                                             old     new   delta
max_option_length                                     44      11     -33

httpd: explain IP/mask parsing, and simplify it a bit.

parse_conf                                          1258    1247     -11
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-11)             Total: -11 bytes
   text    data     bss     dec     hex filename
 772602    1058   11092  784752   bf970 busybox_old
 772594    1058   11092  784744   bf968 busybox_unstripped

httpd: reinstate (much lighter) paranoid connection close code
allegedly needed for some versions of IE. +45 bytes.

httpd: get rid of rmt_port and setenv_log

httpd: get rid of sscanf usage. Rename some variables.

crond: code shrink

libbb,crond,lash: fix getopt32 (don't know how it managed to slip through)
*: fcntl(fd, F_GETFL) doesn't require third parameter at all.

crond: don't start sendmail with absolute path
crond: don't report obsolete version, report true bbox version

don't pass argc in getopt32, it's superfluous

(add/remove: 0/0 grow/shrink: 12/131 up/down: 91/-727) Total: -636 bytes
   text    data     bss     dec     hex filename
 773469    1058   11092  785619   bfcd3 busybox_old
 772644    1058   11092  784794   bf99a busybox_unstripped

httpd: stop reading headers using 1-byte read()

get_line                                              73     105     +32
httpd_main                                           769     766      -3
send_cgi_and_exit                                   1583    1577      -6
send_headers                                         449     432     -17
handle_incoming_and_exit                            2217    2172     -45
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/4 up/down: 32/-71)            Total: -39 bytes

make standalone httpd work on NOMMU machines

get rid of server_ and accepted_socket globals.

get_line                                              74      73      -1
log_and_exit                                          33      32      -1
send_headers                                         457     449      -8
httpd_main                                           906     892     -14
handle_incoming_and_exit                            2136    2113     -23
send_cgi_and_exit                                   1743    1583    -160

introduce and use xdup2(int, int)
stop checking whether setsockopt_reuseaddr(int fd) was successful (it always is)
remove second parameter (sockllen) from xmalloc_sockaddr2xxxxx functions

sockaddr2str                                         142     156     +14
collect_blk                                          467     474      +7
xdup2                                                 28      33      +5
singlemount                                         4456    4454      -2
print_host                                           214     212      -2
nslookup_main                                        139     137      -2
ftpgetput_main                                       414     412      -2
udhcpd_main                                         1258    1255      -3
udhcpc_main                                         2405    2402      -3
traceroute_main                                     4125    4122      -3
nc_main                                             1072    1069      -3
buffer_fill_and_print                                 76      73      -3
xmalloc_sockaddr2hostonly_noport                      18      14      -4
xmalloc_sockaddr2host_noport                          18      14      -4
xmalloc_sockaddr2host                                 15      11      -4
xmalloc_sockaddr2dotted_noport                        18      14      -4
xmalloc_sockaddr2dotted                               18      14      -4
wget_main                                           2618    2614      -4
ping_main                                            393     389      -4
ip_port_str                                          120     115      -5
dhcprelay_main                                      1146    1141      -5
dnsd_main                                           1531    1525      -6
passwd_main                                         1110    1102      -8
udhcp_kernel_packet                                  206     197      -9
udhcp_listen_socket                                  154     144     -10
getty_main                                          2576    2566     -10
setup                                                655     640     -15
xmove_fd                                              51      34     -17
dolisten                                             759     742     -17
tcpudpsvd_main                                      1866    1836     -30
startservice                                         339     299     -40

httpd shrink and logging update, part 7 of 7

   text    data     bss     dec     hex filename
   9836       0       0    9836    266c busybox.t1/networking/httpd.o.orig
   9724       0       0    9724    25fc busybox.t2/networking/httpd.o
   9657       0       0    9657    25b9 busybox.t3/networking/httpd.o
   9342       0       0    9342    247e busybox.t4/networking/httpd.o
   9342       0       0    9342    247e busybox.t5/networking/httpd.o
   9262       0       0    9262    242e busybox.t6/networking/httpd.o
   9283       0       0    9283    2443 busybox.t7/networking/httpd.o
   9334       0       0    9334    2476 busybox.t8/networking/httpd.o

httpd shrink and logging update, part 6 of 7

   text    data     bss     dec     hex filename
   9836       0       0    9836    266c busybox.t1/networking/httpd.o.orig
   9724       0       0    9724    25fc busybox.t2/networking/httpd.o
   9657       0       0    9657    25b9 busybox.t3/networking/httpd.o
   9342       0       0    9342    247e busybox.t4/networking/httpd.o
   9342       0       0    9342    247e busybox.t5/networking/httpd.o
   9262       0       0    9262    242e busybox.t6/networking/httpd.o
   9283       0       0    9283    2443 busybox.t7/networking/httpd.o
   9334       0       0    9334    2476 busybox.t8/networking/httpd.o

httpd shrink and logging update, part 5 of 7

   text    data     bss     dec     hex filename
   9836       0       0    9836    266c busybox.t1/networking/httpd.o.orig
   9724       0       0    9724    25fc busybox.t2/networking/httpd.o
   9657       0       0    9657    25b9 busybox.t3/networking/httpd.o
   9342       0       0    9342    247e busybox.t4/networking/httpd.o
   9342       0       0    9342    247e busybox.t5/networking/httpd.o
   9262       0       0    9262    242e busybox.t6/networking/httpd.o
   9283       0       0    9283    2443 busybox.t7/networking/httpd.o
   9334       0       0    9334    2476 busybox.t8/networking/httpd.o

httpd shrink and logging update, part 4 of 7

   text    data     bss     dec     hex filename
   9836       0       0    9836    266c busybox.t1/networking/httpd.o.orig
   9724       0       0    9724    25fc busybox.t2/networking/httpd.o
   9657       0       0    9657    25b9 busybox.t3/networking/httpd.o
   9342       0       0    9342    247e busybox.t4/networking/httpd.o
   9342       0       0    9342    247e busybox.t5/networking/httpd.o
   9262       0       0    9262    242e busybox.t6/networking/httpd.o
   9283       0       0    9283    2443 busybox.t7/networking/httpd.o
   9334       0       0    9334    2476 busybox.t8/networking/httpd.o

httpd shrink and logging update, part 3 of 7

   text    data     bss     dec     hex filename
   9836       0       0    9836    266c busybox.t1/networking/httpd.o.orig
   9724       0       0    9724    25fc busybox.t2/networking/httpd.o
   9657       0       0    9657    25b9 busybox.t3/networking/httpd.o
   9342       0       0    9342    247e busybox.t4/networking/httpd.o
   9342       0       0    9342    247e busybox.t5/networking/httpd.o
   9262       0       0    9262    242e busybox.t6/networking/httpd.o
   9283       0       0    9283    2443 busybox.t7/networking/httpd.o
   9334       0       0    9334    2476 busybox.t8/networking/httpd.o

httpd shrink and logging update, part 2 of 7

   text    data     bss     dec     hex filename
   9836       0       0    9836    266c busybox.t1/networking/httpd.o.orig
   9724       0       0    9724    25fc busybox.t2/networking/httpd.o
   9657       0       0    9657    25b9 busybox.t3/networking/httpd.o
   9342       0       0    9342    247e busybox.t4/networking/httpd.o
   9342       0       0    9342    247e busybox.t5/networking/httpd.o
   9262       0       0    9262    242e busybox.t6/networking/httpd.o
   9283       0       0    9283    2443 busybox.t7/networking/httpd.o
   9334       0       0    9334    2476 busybox.t8/networking/httpd.o

httpd shring and logging update, part 1 or 7

   text    data     bss     dec     hex filename
   9836       0       0    9836    266c busybox.t1/networking/httpd.o.orig
   9724       0       0    9724    25fc busybox.t2/networking/httpd.o
   9657       0       0    9657    25b9 busybox.t3/networking/httpd.o
   9342       0       0    9342    247e busybox.t4/networking/httpd.o
   9342       0       0    9342    247e busybox.t5/networking/httpd.o
   9262       0       0    9262    242e busybox.t6/networking/httpd.o
   9283       0       0    9283    2443 busybox.t7/networking/httpd.o
   9334       0       0    9334    2476 busybox.t8/networking/httpd.o

remove stray newline from help text

assorted fixes for breakage found by randomconfig

add comments regarding SO_REUSEADDR

Comment out "#include <strings.h>" everywhere

find: fix SELinux-related warning

modprobe: add scanning of /lib/modules/`uname -r`/modules.symbols
  (by Yann E. MORIN)

hdparm: shrink rodata by ~250 bytes

whitespace fixes, no code changes

more: by Tristan Schmelcher <tpkschme@engmail.uwaterloo.ca>:
- Fixed a number of deficiencies in the line wrapping.
- Fixed a bug where the page could scroll multiple times per keypress.
- Re-read terminal dimensions after user input, in case they
  resized the terminal while we were waiting.
- Added an 'R' key to print the rest of the file without prompting.
- Crudely support tabs in the line-wrapping code by converting
  them to 8 spaces.

v[hp]error_msg have 2-3 callsites only -> incorporate there.

if pidfile turned out to be !regular file, do not unlink it.
It's most probably the /dev/null.

dhcpd: make -S and -f actually work

httpd: add -v[v]: prints client addresses, HTTP codes returned [and URLs]

get_line                                               -      70     +70
packed_usage                                       22811   22863     +52
handle_incoming_and_exit                            2246    2277     +31
httpd_main                                          1141    1155     +14
sendHeaders                                          489     482      -7
getLine                                               77       -     -77
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 3/1 up/down: 167/-84)            Total: 83 bytes
   text    data     bss     dec     hex filename
 774335    1058   11092  786485   c0035 busybox_old
 774447    1058   11092  786597   c00a5 busybox_unstripped

httpd: extend -p PORT to -p [IP[v6]:]PORT
httpd: comment out strange code which "closes connection properly"
(isnt exit(0) good enough?)

handle_incoming_and_exit                               -    2246   +2246
httpd_main                                          1116    1141     +25
getLine                                               75      77      +2
packed_usage                                       22827   22811     -16
parse_conf                                          1303    1284     -19
shutdown                                              32       -     -32
handleIncoming                                      2578       -   -2578
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 2/2 up/down: 2273/-2645)       Total: -372 bytes
   text    data     bss     dec     hex filename
 774704    1058   11092  786854   c01a6 busybox_old
 774335    1058   11092  786485   c0035 busybox_unstripped

udhcpd: add -f "foreground" and -S "syslog" options
udhcpc: add -S "syslog" options
remove CONFIG_FEATURE_UDHCP_SYSLOG

function                                             old     new   delta
udhcpd_main                                         1168    1201     +33
udhcpc_main                                         2414    2425     +11
static.udhcpc_longopts                               191     200      +9
qgravechar                                           112     108      -4
packed_usage                                       22843   22827     -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/2 up/down: 53/-20)             Total: 33 bytes

trylink: automatically use custom link script if user provides one
vinfo_msg: one user (info_msg), incorporate in it
*: style fixes

syslogd: set syslog IPC buffer to mode 0644

expand, unexpand: new applets from Tito <farmatito@tiscali.it>

df: match coreutils behavior of wrapping lines if filesystem name is too long.
df: trim help text

httpd: round down sendfile byte count to 64k
*: style fixes

usage.h: style cleanup

s/#ifdef CONFIG_/#if ENABLE_/g

syslogd,logread: get rid of head pointer, fix logread bug in the process

function                                             old     new   delta
logread_main                                         450     462     +12
syslogd_main                                        1246    1252      +6
shbuf                                                  -       4      +4
buf                                                   34      30      -4
packed_usage                                       22729   22724      -5
log_locally                                          957     767    -190
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/3 up/down: 22/-199)          Total: -177 bytes
   text    data     bss     dec     hex filename
 773886    1116   11316  786318   bff8e busybox_old
 773714    1116   11316  786146   bfee2 busybox_unstripped

httpd: sendfile support

fix out-of-source-tree build

trylink: produce even more info about final link stage
trylink: explain how to modify link and drastically decrease amount
  of padding (unfortunately, needs hand editing ATM).
*: add ALIGN1 / ALIGN2 to global strings and arrays of bytes and shorts

size saving: 0.5k

httpd: CGI Status: header fix

httpd: add support for Status: CGI header

httpd: fix CGI handling bug (we were closing wrong fd).

ls,ps,watch: measure terminal width on fd 0, not 1

stat: fix option -Z segv (bug 1454)

udhcpd: fix bug: s/memcmp() != 0/memcmp() == 0/
(by David Updegraff <dave@cray.com>)

bb_uudecode: now this is the more thorough fix... I hope...

bb_uuencode: fix obscure case where we were using data past last byte of source
(fixes testsuite failure)

bb_uuencode                                          154     160      +6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 6/0)                 Total: 6 bytes
   text    data     bss     dec     hex filename
 770284    1096   11228  782608   bf110 busybox_old
 770288    1096   11228  782612   bf114 busybox_unstripped

patch: fix -p -1 handling
checkstack.pl: add blackfin (by Alex Landau <landau_alex@yahoo.com>)

catv: catv without arguments was trying to use environ as argv.
(Alex Landau <landau_alex@yahoo.com>)

trylink: s/&& exit 1/|| exit 1/ (spotted by Alex Landau <landau_alex@yahoo.com>)

sed: fix 'q' command handling ("Nguyen Thai Ngoc Duy" <pclouds@gmail.com>)
     add testsuite entry for it. Fix applet order checker. Fix cmp yelling.
trylink: fix error file and map file generation
applets: fix applet order

env: micro-optimization
printenv: fix "printenv VAR1 VAR2" bug (wasn't printing VAR2)
(spotted by kalyanatejaswi balabhadrapatruni <kalyanatejaswi@yahoo.co.in>)

env_main                                             267     260      -7
printenv_main                                        147      75     -72
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-79)             Total: -79 bytes
   text    data     bss     dec     hex filename
 770336    1096   11228  782660   bf144 busybox_old
 770256    1096   11228  782580   bf0f4 busybox_unstripped

setfiles:
* Bug fix: -f option did not work.
* Using bb_simplify_path to remove extra slash for smaller code.
(by Yuichi Nakamura <ynakam@hitachisoft.jp>)

less: add a bit more robustness in keyboard reading code

mount: print errno on NFS error (again)

svlogd: fix timestamping; do not warn if config is missing
sv: extend help text

ttysize: update copyright

udhcp: slight shrink
udhcpd_main                                         1171    1208     +37
udhcpc_main                                         2363    2387     +24
dhcprelay_main                                      1145    1146      +1
dhcprelay_stopflag                                     4       1      -3
dhcprelay_signal_handler                              11       8      -3
client_background                                     46      42      -4
udhcp_read_interface                                 230     211     -19
udhcp_make_pidfile                                    76       -     -76
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 3/4 up/down: 62/-105)           Total: -43 bytes
   text    data     bss     dec     hex filename
 770052    1096   11228  782376   bf028 busybox_old
 769980    1096   11228  782304   befe0 busybox_unstripped

ttysize: new applet. +200 bytes

start_stop_daemon: NOMMU fixes, round 2 by Alex Landau <landau_alex@yahoo.com>
dhcpc: fixed "ifupdown + udhcpc_without_pidpile_creation" bug

patch: fix bad line ending handling ("Nguyen Thai Ngoc Duy" <pclouds@gmail.com>)

start_stop_daemon: NOMMU fix; smaller fixes

addgroup: "disallow addgroup -g num user group"; make -g 0 work
(Tito <farmatito@tiscali.it>)

dd: use unsigned printf specifier for # of blocks

dd: fix newly introduced bug (introduced by me)

interface.c: code shrink (IIRC ~30 bytes)

ash: comment non-obvious code part

fix for suffix optimization (which was in previous commit)

multiplier suffixes are short, store them directly in struct suffix_mult

function                                             old     new   delta
xstrtoul_range_sfx                                   226     217      -9
xstrtoull_range_sfx                                  291     280     -11
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-20)             Total: -20 bytes
   text    data     bss     dec     hex filename
 669128    2668   13616  685412   a7564 busybox_old
 669108    2668   13616  685392   a7550 busybox_unstripped

dd: fix bug where we assume count=INT_MAX when count is unspecified;
shrink dd while at it

function                                             old     new   delta
dd_main                                             1453    1368     -85
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-85)             Total: -85 bytes
   text    data     bss     dec     hex filename
 669216    2668   13616  685500   a75bc busybox_old
 669128    2668   13616  685412   a7564 busybox_unstripped

passwd: fix bug: we are trying to update shadow even if user's record is in passwd!
getspnam is guilty, it lies that user record exists in shadow.

bb_getpwuid, bb_getgrgid: change order of arguments to more intuitive one;
comment thoroughly when they die and when they dont.

cal: small code shrink

setfiles: small code size reduction (Yuichi Nakamura <ynakam@hitachisoft.jp>)

ps: fix non-desktop ps -ww -- thanks rockeychu

getopt32: fix getopt32 breakage (forgot to memset(0) it) -- thanks rockeychu

Replace index_in_[sub]str_array with index_in_[sub]strings,
which scans thru "abc\0def\0123\0\0" type strings. Saves 250 bytes.

   text    data     bss     dec     hex filename
 781266    1328   11844  794438   c1f46 busybox_old
 781010    1328   11844  794182   c1e46 busybox_unstripped

od: shrink a bit

verbose                                               12      13      +1
open_next_file                                       102      99      -3
limit_bytes_to_format                                  4       1      -3
ioerror                                                4       1      -3
flag_pseudo_start                                      4       1      -3
flag_dump_strings                                      4       1      -3
abbreviate_duplicate_blocks                            4       -      -4
check_and_close                                       96      90      -6
od_main                                             2988    2955     -33
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/7 up/down: 1/-58)             Total: -57 bytes
   text    data     bss     dec     hex filename
 781314    1328   11876  794518   c1f96 busybox_old
 781266    1328   11844  794438   c1f46 busybox_unstripped

setfiles: small tweaks to usage text and code

zcip: remove stray seed48. It's the only thing which was pulling in
rand48 machinery:

zcip_main                                           1552    1537     -15
seed48                                                22       -     -22
__libc_drand48_data                                   24       -     -24
seed48_r                                              78       -     -78
__GI_seed48_r                                         78       -     -78
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 0/1 up/down: 0/-217)           Total: -217 bytes

add comment why preferred stack boundary is 4 on i386

chpasswd: rename long options definition to match other applets. no code changes

getopt32 must remain NOFORK-safe (no mallocs!). Using alloca and pretending
stack is infinite. Unfortunately, +79 bytes.

rework long option handling. saves ~1.2k

function                                             old     new   delta
tar_longopts                                           -     222    +222
static.udhcpc_longopts                                 -     192    +192
start_stop_daemon_longopts                             -     150    +150
getopt32                                            1045    1185    +140
static.wget_longopts                                   -     111    +111
static.od_longopts                                     -     105    +105
getopt_longopts                                        -      96     +96
install_longopts                                       -      67     +67
ipcalc_longopts                                        -      63     +63
static.hwclock_longopts                                -      54     +54
ftpgetput_longopts                                     -      52     +52
static.dumpleases_longopts                             -      32     +32
env_longopts                                           -      31     +31
runparts_longopts                                      -      30     +30
mv_longopts                                            -      24     +24
mkdir_longopts                                         -      19     +19
find_pair                                            164     180     +16
bb_null_long_options                                   -      16     +16
setconsole_longopts                                    -      10     +10
display_speed                                         91      98      +7
collect_blk                                          467     474      +7
show_color                                             4       1      -3
ls_main                                              913     904      -9
bb_default_long_options                               16       -     -16
ls_color_opt                                          32      10     -22
setconsole_long_options                               32       -     -32
arith                                               2077    2030     -47
mv_long_options                                       48       -     -48
mkdir_long_options                                    48       -     -48
env_long_options                                      48       -     -48
static.options                                       248     184     -64
runparts_long_options                                 80       -     -80
ftpgetput_long_options                                96       -     -96
static.hwclock_long_options                          112       -    -112
install_long_options                                 112       -    -112
static.long_options                                  144       -    -144
static.wget_long_options                             160       -    -160
longopts                                             160       -    -160
static.arg_options                                   304       -    -304
tar_long_options                                     320       -    -320
long_options                                         384       -    -384
------------------------------------------------------------------------------
(add/remove: 17/15 grow/shrink: 4/5 up/down: 1444/-2209)     Total: -765 bytes
   text    data     bss     dec     hex filename
 782618    1328   11900  795846   c24c6 busybox_old
 781354    1328   11900  794582   c1fd6 busybox_unstripped

setiles: cosmetics, no real code changes

setfiles,restorecon: new SELinux applets by Yuichi Nakamura <ynakam@hitachisoft.jp>

chpasswd: fix indentation

style fix (stray space before ';')

fix typo in last commit

Three patches from FreeWRT people