kill lash. "lash" builtin still exists, but it runs hush.

Add an RFC for future ipv6 ftp work

hush: implement echo builtin

builtin_echo                                           -      36     +36
bltins                                               384     396     +12
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/0 up/down: 48/0)               Total: 48 bytes

hush: fix $ expansion in redirections, add testcase for that

hush: implement test builtin

hush: plug memory leak

arping: fix help text (-i -> -I), and shorten it a bit

arping: fix a bug where there is implicit count of 4G;
eliminate data/bss usage; code shrink

function                                             old     new   delta
timeout_us                                             4       -      -4
static.start                                           4       -      -4
src                                                    4       -      -4
sock                                                   4       -      -4
sent                                                   4       -      -4
req_recv                                               4       -      -4
received                                               4       -      -4
last                                                   4       -      -4
dst                                                    4       -      -4
count                                                  4       -      -4
brd_sent                                               4       -      -4
brd_recv                                               4       -      -4
catcher                                              375     365     -10
me                                                    20       -     -20
he                                                    20       -     -20
arping_main                                         1941    1874     -67
------------------------------------------------------------------------------
(add/remove: 0/14 grow/shrink: 0/2 up/down: 0/-165)          Total: -165 bytes
   text    data     bss     dec     hex filename
 783035     941    9244  793220   c1a84 busybox_old
 782907     937    9156  793000   c19a8 busybox_unstripped

cut: add proper stdout error handling, fix "-" handling;
modest code shrink

logread: add forgotten INIT_G();

logread: eliminate usage of data/bss
ifup: don't remove virtual iface prefixes (eth0:0)

function                                             old     new   delta
shbuf                                                  4       -      -4
SMrup                                                  6       -      -6
SMrdn                                                 12       -     -12
static.label_buf                                      20       4     -16
get_var                                              158     140     -18
------------------------------------------------------------------------------
(add/remove: 0/3 grow/shrink: 0/2 up/down: 0/-56)             Total: -56 bytes
   text    data     bss     dec     hex filename
 783501     962    9260  793723   c1c7b busybox_old
 783483     942    9244  793669   c1c45 busybox_unstripped

dhcp: stop using magic constants; use (htonl(CONST) != a) - it's smaller

function                                             old     new   delta
udhcp_get_packet                                     146     134     -12
get_raw_packet                                       368     353     -15

udhcpc: remove -W option, -A can be reused for that
help texts: trimmed a bit

static.udhcpc_longopts                               227     209     -18
udhcpc_main                                         2633    2590     -43
packed_usage                                       22927   22871     -56
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-117)           Total: -117 bytes

fix a thinko in build system

ash: fix bug where redirection of closed fd was leaving it open afterwards.

redirect                                             983    1024     +41
bb_echo                                              276     301     +25
popredir                                             118     132     +14
evalcommand                                         1163    1176     +13
bbunpack                                             358     366      +8
echocmd                                               13       5      -8
echo_main                                             13       5      -8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/2 up/down: 101/-16)            Total: 85 bytes
   text    data     bss     dec     hex filename
 774999     962    9236  785197   bfb2d busybox_old
 775084     962    9236  785282   bfb82 busybox_unstripped

sestatus: new SELinux applet (KaiGai Kohei <kaigai@ak.jp.nec.com>)

dhcpc: cleanup and comments; fix buggy timeout handling in corner cases.
-25 bytes.

udhcpc: an option to perform ARP check (Jonas Danielsson <jonas.danielsson@axis.com>)
configurable, ~+300 bytes when on.

cleanup comments and coding style and rewrite the mdev.conf parser to use common busybox functions and call strdup() less often ... saves a ~few hundred bytes

ip: stop propagating argc; optimize ip_parse_common_args

function                                             old     new   delta
find_pair                                            167     187     +20
static.families                                        -      17     +17
die_must_be_on_off                                     -      11     +11
...
on_off                                                33      22     -11
do_ipaddr                                            103      90     -13
do_iptunnel                                         1001     986     -15
iproute_list_or_flush                               1237    1217     -20
static.ip_common_commands                             43      22     -21
do_iproute                                          2217    2193     -24
parse_args                                          1444    1414     -30
ip_do                                                 47      16     -31
do_iprule                                            994     963     -31
ip_main                                              153     113     -40
ipaddr_modify                                       1357    1305     -52
ipaddr_list_or_flush                                2543    2490     -53
ip_parse_common_args                                 294     159    -135
------------------------------------------------------------------------------
(add/remove: 4/1 grow/shrink: 4/24 up/down: 85/-563)         Total: -478 bytes
   text    data     bss     dec     hex filename
 775561     966    9236  785763   bfd63 busybox_old
 775073     962    9236  785271   bfb77 busybox_unstripped

stty: mark variable as static

make output a little more friendly

merge from upstream for systems that dont integrate libintl into their C library:

commit aa1e5ef5c1d95e7ebf0821d9ba27debe43a87a22
Author: Sam Ravnborg <sam@ravnborg.org>
Date:   Sun Aug 12 23:15:44 2007 +0200

    kbuild: check if we can link gettext not just compile

    cygwin provides the header file but the lib file needs
    to be added manually. A generic fix is to check if
    we can compile and link a program that uses gettext()
    and if it fails fall back to NO_NLS.

    International users of cygwin may have to specify
    HOST_LOADLIBES := "-lintl" on the make command line.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

exported symbols may be weak, so allow symbols marked as W

syslogd: use DEV_CONSOLE consistently
init: remove obsolete comment

hexdump: add hd alias, add -R option

add comment clarifying busybox's use of non-standard tar header

tar: fix a case where glibc detects bogus buffer overrun
     which is not really there!

dmesg,klogd: make code more readable
libbb: explain why we declare klogctl
libbb: move defs around so that order makes more sense

- use standard-imposed constants some more

- remove most of the forward declarations. No obj-code changes.

- add note about SUSv3 missing options.

who: add -a (by Tito)

lash: fix compile-time warning

df: add -a
df: don't special case rootfs and /dev/root

function                                             old     new   delta
df_main                                              746     684     -62
find_block_device                                    111       -    -111
find_block_device_in_dir                             243       -    -243
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/1 up/down: 0/-416)           Total: -416 bytes

df: add -i (conditional on CONFIG)
uasge: trim a bit

cosmetic change in message text

bad syntax error should go to stderr

Introduce FEATURE_PREFER_IPV4_ADDRESS. If selected, we have:
function                                             old     new   delta
str2sockaddr                                         328     344     +16

tr: more of code shrink (getopt32-ification)
runtest: cleanup. Method of getting $applets was truly bizarre

function                                             old     new   delta
tr_main                                              655     527    -128

tr: better comments, small code shrink

function                                             old     new   delta
expand                                              2232    2230      -2
tr_main                                              677     655     -22

tr: properly detect read errors (Fernando Silveira <fsilveira@gmail.com>)
readprofile: use xwrite

function                                             old     new   delta
tr_main                                              679     677      -2
readprofile_main                                    1964    1944     -20

trylink: accomodate older versions of ld

who: code shrink by Tito <farmatito@tiscali.it>

function                                             old     new   delta
who_main                                             271     259     -12

add sed mini-doc

sed: support GNU-like '\t' escape in substitutions

inetd: revert bogus fix for bug 1562; shrink inetd a bit

function                                             old     new   delta
dupconfig                                            159     146     -13
getconfigent                                        1123    1073     -50

open_transformer: do not duplicate "<program> -cf -"

   text    data     bss     dec     hex filename
 677858     738    7236  685832   a7708 busybox_old
 677804     738    7236  685778   a76d2 busybox_unstripped

gzip: fix a case where tar xzf fails (we use uninitialized fd)

who: fix wrong date/time field size

Announce 1.8.1

init: fix bug 1584: improper check for fork error

umount: stop using excessive aounts of stack. Surprisingly,
code shrank a lot too

function                                             old     new   delta
umount_main                                          751     640    -111

lineedit: stop using both data/bss and tons of stack.
stack usage was ~10 kb!
unfortunately, noticeable code size growth:
   text    data     bss     dec     hex filename
   9252      12     181    9445    24e5 busybox.t7/libbb/lineedit.o
   9714       4       0    9718    25f6 busybox.t8/libbb/lineedit.o

*: remove superfluous "?" in option parsing

readlink: realpath requires PATH_MAX, bb_common_bufsiz1 can be too small
umount: don't actually need char[2 * PATH_MAX] for realpath

syslogd: support "symlink to symlink" for /dev/log; reduce stack usage

function                                             old     new   delta
create_socket                                          -     134    +134
syslogd_main                                        1132     865    -267
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 134/-267)         Total: -133 bytes
   text    data     bss     dec     hex filename
 775603     974    9420  785997   bfe4d busybox_old
 775445     974    9420  785839   bfdaf busybox_unstripped

- commentary fixes
- use common exit sequence for failure path:
   text    data     bss     dec     hex filename
    308       0       0     308     134 libbb/xreadlink.o.pgf
    296       0       0     296     128 libbb/xreadlink.o

xmalloc_follow_symlinks() -- fix ELOOP issue with absolute paths,
return full path in cases where path doesn't resolve to a link.
change name to better differentiate from xmalloc_readlink().

xreadlink: code shrink
udhcp: add missing tryagain member to client_config

function                                             old     new   delta
xmalloc_readlink_follow                              169     154     -15
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-15)             Total: -15 bytes

follow symlinks to find the true passwd file before updating.

new xmalloc_readlink_follow() routine to fully expand trailing symlinks
to get to a "real" file (or directory).

add "-A N" / "--tryagain=N" option to client, to allow altering the
default 60 second wait after failure to get a lease.

flush typeahead before prompt

login: fix PAM login (was unable to complete Kerberos login)

modprobe: fix a bug where we were entering endless loop
syslogd: strip trailing '\n' too, not only NULs

login: clear dangerous environment variables if started by non-root

fbset: fix buglet where we were using wrong pointer
readahead: stop using stdio.h
*: style fixes

telnet: use poll, it's shorter
*: style fixes

unzip: hmm... gcc doesn't like ATTRIBUTE_PACKED?? Document that...

insmod: make error reporting less verbose

telnetd: fix problem with zombies (by Paul Fox <pgf@brightstareng.com>)
syslogd: strip trailing NULs

change safety check on zip header to allow for extra length, and
revert the header read to use the correct constant rather than
sizeof.  at least one version of gcc (armv4-linux-gcc-3.4.1) pads
the struct to 28 bytes in spite of the packing.

swaponoff: prevent arithmetic overflow (spotted by Paul Fox <pgf@brightstareng.com>)

fix incorrect text of link-time error message. No code changes

webpage: fix typo, remove inconsistent trailing dots
Makefile: version is 1.9.0.svn now

update screenshot

Announce 1.8.0

docs: fix new-applet-HOWTO.txt, delete ipv4_ipv6.txt (it's obsolete)

Announce 1.7.3 on website

ifconfig: code shrink
adjtimex: code shrink
libbb: move nth_string function into libbb
hdparm: nth_string was here

   text    data     bss     dec     hex filename
 730013   10334   12032  752379   b7afb busybox_old
 730093   10134   12032  752259   b7a83 busybox_unstripped

grep: fix -Fo

insmod: code shrink, stop exporting insmod_ng_main.

function                                             old     new   delta
add_ksymoops_symbols                                   -     421    +421
static.section_names                                  20      40     +20
lsmod_main                                           425     424      -1
set_tainted                                          153     150      -3
main_opts                                              4       -      -4
obj_symbol_patch                                      47      42      -5
obj_string_patch                                     144     139      -5
already_loaded                                       144     138      -6
check_dep                                            348     341      -7
append_option                                         75      68      -7
obj_allocate_commons                                 515     501     -14
new_process_module_arguments                        1039    1018     -21
arch_new_symbol                                       31       9     -22
check_module_name_match                               85      61     -24
obj_create_alloced_section                           164     136     -28
include_conf                                         930     902     -28
modprobe_main                                       1643    1535    -108
obj_load                                             924     777    -147
insmod_ng_main                                       245       -    -245
insmod_main                                         4122    3794    -328
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 1/16 up/down: 441/-1003)       Total: -562 bytes
   text    data     bss     dec     hex filename
 776020     974    9420  786414   bffee busybox_old
 775384     974    9420  785778   bfd72 busybox_unstripped

inetd: fix bug 1562 "inetd does not set argv[0] properly" (fix by IlyaPanfilov)
inetd: code shrink while at it

function                                             old     new   delta
static.SOCK_xxx                                        -       6      +6
getconfigent                                        1222    1123     -99
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 6/-99)             Total: -93 bytes
   text    data     bss     dec     hex filename
 776099     974    9420  786493   c003d busybox_old
 776020     974    9420  786414   bffee busybox_unstripped

hdparm: code shrink

   text    data     bss     dec     hex filename
 776494     974    9420  786888   c01c8 busybox_old
 776099     974    9420  786493   c003d busybox_unstripped

e2fsprogs: code shrink

   text    data     bss     dec     hex filename
 776594     974    9420  786988   c022c busybox_old
 776494     974    9420  786888   c01c8 busybox_unstripped

- fix typo in helptext

minor fix in comment, no code changes

ll_types.c: optimize link type table, make it conditional
            on FEATURE_IP_RARE_PROTOCOLS

function                                             old     new   delta
static.arphrd_name                                     -     373    +373
static.arphrd_type                                     -     124    +124
ll_type_n2a                                           58      78     +20
static.arphrd_names                                  496       -    -496
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 1/0 up/down: 517/-496)           Total: 21 bytes
   text    data     bss     dec     hex filename
 776880     974    9420  787274   c034a busybox_old
 776594     974    9420  786988   c022c busybox_unstripped

appletlib.c: make it actally follow _BB_SUID_ALWAYS rules
adduser: implement -S and code shrink / fix uid selection
*: sanitize getspnam_r use

   text    data     bss     dec     hex filename
 777042     974    9676  787692   c04ec busybox_old
 776883     974    9676  787533   c044d busybox_unstripped

syscall: code shrink

   text    data     bss     dec     hex filename
 777209     974    9676  787859   c0593 busybox_old
 777042     974    9676  787692   c04ec busybox_unstripped

mount: size-optimize mount_options[] and nfs_errtbl[]

 777253     974    9676  787903   c05bf busybox_old
 777209     974    9676  787859   c0593 busybox_unstripped

ash: if tcgetattr(stdin) fails, don't mess with tcsetattr
ash: size-optimize ulimit's table of limits

   text    data     bss     dec     hex filename
 777345     974    9676  787995   c061b busybox_old
 777253     974    9676  787903   c05bf busybox_unstripped

svlogd: fix compat problem: svlogd -tt should timestanp stderr too

httpd: fix trivial bug (spotted by Alex Landau)

bzip2: make -d actually work

bb_askpass: handle Ctrl-C, restore termoios on Ctrl-C.
sulogin: remove alarm handling, as it is redundant there.
code shrink. After all differences cancel out:

   text    data     bss     dec     hex filename
 777543    1000    9532  788075   c066b busybox_old
 777543    1000    9532  788075   c066b busybox_unstripped

read_line_input: fix it to not do any fancy editing if echoing is disabled.
ash: make read handling both more correct and smaller

read_line_input                                     4037    4101     +64
input_backward                                       140     139      -1
readcmd                                             1079    1070      -9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/2 up/down: 65/-10)             Total: 54 bytes
   text    data     bss     dec     hex filename
 777575    1000    9532  788107   c068b busybox_old
 777629    1000    9532  788161   c06c1 busybox_unstripped

more fixes for help text wrt long options

website: add link to "No ifup" document