Kbuild: move CONFIG_PAM to general configuration

Currently CONFIG_PAM depends on CONFIG_LOGIN, but is used by the httpd applet too.

This patch moves said option to general configuration, thus allowing to
compile httpd with PAM support independently from login.

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

udhcpc: fix BPF filter. Hopefully fixes the root cause of 4598 and 6746

Use a *signed* large positive value in BPF filter to indicate success.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ifplugd: code shrink

function                                             old     new   delta
ifplugd_main                                        1161    1144     -17

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

htpd: trivial simplification in random interval selection

function                                             old     new   delta
poll_interval                                         57      52      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libbb: don't die if crypt() returns NULL

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

sendmail: use FQDN in default envelope sender

RFC 5321 requires the return path to be supplied with a proper domain
name.

Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

udhcpc: in comments, explain the kind of raw socket we create

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

grep: properly handle grep -w "^str" in !EXTRA_COMPAT case too

function                                             old     new   delta
grep_file                                           1267    1288     +21

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

sendmail: make -f optional, document its default value

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

udhcpc: don't use BPF filter, users report problems (bugs 4598, 6746)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ifupdown: support 'link' address family

Does not configure anything. L2 configuration hook scripts should do
their job on receiving ADDRFAM=link. Configuration will be done only
once, irrespective of L3 protocols used.

Using the 'link' family in the interfaces file conforms to the Debian
implementation:

http://sources.debian.net/src/ifupdown/0.7.47.1/link.defn

function                                             old     new   delta
link_methods                                           -      12     +12
addr_link                                              -      12     +12
link_up_down                                           -       6      +6
static.addr_fams                                      12      16      +4
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 1/0 up/down: 34/0)               Total: 34 bytes

Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

wget: fix use-after-free of ->user. Closes 6836

function                                             old     new   delta
wget_main                                           2207    2223     +16
parse_url                                            339     353     +14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

catv: suppress compiler warning

The warning was:
warning: typedef 'BUG_const_mismatch' locally defined but not used [-Wunused-local-typedefs]

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

zcat: complain if input is not compressed

function                                             old     new   delta
buffer_fill_and_print                                178     191     +13
varvalue                                             735     743      +8
bbunpack                                             747     755      +8
open_zipped                                           85      89      +4
xmalloc_open_zipped_read_close                        61      63      +2
get_addr_1                                           240     242      +2
fbsplash_main                                       1228    1230      +2
pstree_main                                          322     321      -1
builtin_type                                         121     119      -2
do_load                                              954     926     -28
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 7/3 up/down: 39/-31)              Total: 8 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

appletlib: fix set-but-unused warning

When you build with FEATURE_INSTALLER disabled, you get a build
warning like so:

libbb/appletlib.c: In function 'busybox_main':
libbb/appletlib.c:691:7: warning: variable 'use_symbolic_links' set but
                                  not used [-Wunused-but-set-variable]
   int use_symbolic_links;
       ^

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

uname: fix up usage documentation

The -i/-o options were missing, and the -r/-s/-v options were
incorrectly labeled as "OS" instead of "kernel".

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

init: do not fail build if SIGPWR is not defined

Apparently, some *BSD variants (and maybe some other OSes) does not define
SIGPWR signal.  So since commit 760fc6debcba8c, busybox fails to build on
such platforms.  Fix this.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libbb: open_zipped() should not fail on non-compressed files

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

testsuite: fix last "which" change

In commit afa63b2dcdc9b9 I replaced `type -p' with
`command -pv'.  But actually it is wrong, the right
substitution is `command -v'.  We need to find our
busybox which is in the first directory in $PATH, so
`command -p' should not be used because it uses
default PATH, not current value of PATH where our
busybox binary resides.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

less: accept and ignore -s

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

man: parse "DEFINE pager" in config

function                                             old     new   delta
man_main                                             789     844     +55

Signed-off-by: John Spencer <maillist-busybox@barfooze.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

iplink: fix build with kernel versions prior to 2.6.23

Signed-off-by: Eugene Rudoy <gene.devel@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libbb: if opening /dev/loopN returns ENXIO, don't try N++.

function                                             old     new   delta
set_loop                                             639     635      -4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libbb: fix parsing of "10101010" date/time form

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

top.c: fix compilation warnings

pfd[1] is unused

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ntpd: remove now unnecessary check for IP_PKTINFO definition

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ntpd: fix compilation warnings

GCC complained about since_last_update being set but not used.

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

sort: check global flags on fallback sort

Sort now performs global reverse on fallback sort if -r is set. Before
only key local flags were checked.

function                                             old     new   delta
compare_keys                                         712     738     +26

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

sort.c: remove a magic number from compare_keys()

Use bitwise OR of proper flags instead.

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

gitignore: ignore files generated by 'make test'

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

adduser,addgroup: introduce and use CONFIG_LAST_ID

Changes adduser.c, addgroup.c and Config.src to set and use CONFIG_LAST_ID.

function                                             old     new   delta
adduser_main                                         841     865     +24
addgroup_main                                        407     425     +18

Signed-off-by: Tito Ragusa <farmatito@tiscali.it>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

examples/udhcp: do not rewrite resolv.conf if no DNS servers. Closes 6788

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

docs: tweak keep_data_small.txt

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

tar: tighten up pax header validity check

function                                             old     new   delta
get_header_tar                                      1785    1795     +10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

fakeidentd: simplify ndelay manipulations

function                                             old     new   delta
new_peer                                              91      79     -12
do_rd                                                197     152     -45

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

tail: adjust help/usage texts

Signed-off-by: Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

lineedit: fix trivial build failure

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libarchive: open_zipped() does not need to check extensions for e.g. gzip

We only need to check for signature-less extensions,
currently only .lzma. The rest can be happily autodetected.

This fixes "zcat FILE_WITHOUT_GZ_EXT" case, among others.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

build system: fix non-portable sed constructs.

This includes proper line breaks for labels and closing braces,
and removing non-portable \n and \t in s/// functions.

Signed-off-by: Matthias Andree <matthias.andree@gmx.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

fixlet for the previous commit #2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

fixlet for the previous commit

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

networking: explain isrv_run() API

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

fakeidentd: fix use-after-free

function                                             old     new   delta
do_rd                                                199     197      -2

Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

chown: fix help text

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

find: fix a regression introduced with -HLP support

function                                             old     new   delta
find_main                                            294     342     +48

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ping: revert "try SOCK_DGRAM if no root privileges"

It wasn't working, and fixes on top of it would make ping
noticeably larger.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

build system: "make hosttools" doesn't exist, remove it from "make help"

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

build system: stop including alloca.h, stdlib.h provides it

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ntpd: adjust last packet's recv time after a step

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libbb: FreeBSD fix for B<num> baud rate constants not fitting into a short.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

Another FreeBSD fix from Matthias Andree

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ash: in bash compat mode, always export $SHLVL

function                                             old     new   delta
ash_main                                            1437    1442      +5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

grep: fix two bugs with -w

Unfortunately, with !EXTRA_COMPAT, "grep -w ^str" still erroneously matches "strstr".

function                                             old     new   delta
grep_file                                           1499    1510     +11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

platform.h: undef HAVE_STRCHRNUL only on correct versions of FreeBSD

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

Start 1.23.0 development cycle

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

Bump version to 1.22.0

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

testsuite: remove forgotten debug hack

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

fix failures found by randomconfig builds

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

testsuite: disable tests for no longer supported bbox-specific date formats

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

adduser: check whether run with no USERNAME. Closes 6728

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

testsuite: fix false positives for du

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

build system: fix make gconfig

Was getting "undefined reference to symbol 'dlsym@@GLIBC_2.2.5'".

Signed-off-by: Daniel Borca <dborca@yahoo.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

sed: accept s///i as a synonym for s///I ("ignore case")

Signed-off-by: David A. Wheeler <dwheeler@dwheeler.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

hostname: do not use gethostbyname() for "hostname -s"

There's no reason to call gethostbyname() on the value returned
by uname() when asked just for a short name of a host.  This may
also be wrong, when uname is set to one value, but in /etc/hosts
(or elsewhere) the "canonical" name is different.  This is often
the case for localhost entry in /etc/hosts:

  127.0.0.1     localhost       myname

With this content of /etc/hosts, and uname being set to myname,
busybox hostname -s will return localhost, while regular
hostname utility returns myname.

Fix this by not calling gethostbyname() for the simple
'hostname -s' use.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

wget: user-friendly fallback to http

GNU wget: wget google.com // ok
bb before: wget google.com // wget: not an http or ftp url

function                                             old     new   delta
parse_url                                            317     339     +22

Signed-off-by: Lauri Kasanen <curaga@operamail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

kill[all[5]]: code shrink

function                                             old     new   delta
kill_main                                            992     947     -45

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

killall5: return 2 if no processes got killed

function                                             old     new   delta
kill_main                                            943     992     +49

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

do not fail build if MAXSYMLINKS isn't defined

This is needed for, eg, hurd, which is known to have no constraints.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

expand: use printable_string instead of hard-coding implementation

function                                             old     new   delta
expand_main                                          709     690     -19

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ntpd: speed up resyncing if our clock is seriously off

function                                             old     new   delta
recv_and_process_peer_pkt                            892     922     +30

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ntpd: do not invalidate datapoints after step

Used to set p->filter_datapoint[i].d_dispersion = MAXDISP
and clear reachable bits, but this proved to be too agressive:
after step (tested with suspinding laptop for ~30 secs),
this caused all previous data to be considered invalid,
making us needing to collect full ~8 datapoins per peer
after step in order to start trusting them.
In turn, this was making poll interval decrease even after
step was done. (Poll interval decreases already before step
in this scenario, because we see large offsets and end up with
no good peer to select).

function                                             old     new   delta
reset_peer_stats                                     157     139     -18

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ntpd: comment out "spike detection" code

function                                             old     new   delta
update_local_clock                                   982     835    -147

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ntpd: promote log level 3 to production

Without it, peer selection logic is hard to debug

function                                             old     new   delta
update_local_clock                                   861     982    +121
select_and_cluster                                   962    1065    +103
common_ping_main                                    1788    1821     +33
huft_build                                          1287    1296      +9
chpst_main                                           708     704      -4
INET6_resolve                                        127     119      -8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/2 up/down: 266/-12)           Total: 254 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ntpd: let user know if spike was detected

function                                             old     new   delta
update_local_clock                                   861     943     +82

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

Use unsigned printf/scanf conversion where more appropriate

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

fix assorted unused code and wrong format specs found by cppchekc (bug 6716)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

chpst: fix a bug where -U USER was using wrong USER (one from -u USER)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

ping: try SOCK_DGRAM if no root privileges

Signed-off-by: Daniel Borca <dborca@yahoo.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

dpkg-deb: cosmetic correction to usage text

Signed-off-by: Daniel Borca <dborca@yahoo.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

sed: code shrink

function                                             old     new   delta
get_next_line                                        246     250      +4
sed_main                                             671     662      -9
add_input_file                                        47       -     -47
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/1 up/down: 4/-56)             Total: -52 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

sed: open input files sequentially to avoid EMFILE

Currently, sed pre-opens all files, which may cause EMFILE errors
on systems with low ulimit -n.  Change sed to open one file at a time.

function                                             old     new   delta
get_next_line                                        177     235     +58
sed_main                                             682     652     -30
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 58/-30)             Total: 28 bytes

Based on the patch by Daniel Borca <dborca@yahoo.com>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

hush: typo fixes in comments

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

platform: strchrnul is missing if __APPLE__

Signed-off-by: Daniel Borca <dborca@yahoo.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

build system: use od -b instead of od -t x1

od -t is not available in non-CONFIG_DESKTOPed busybox od

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

init: halt on SIGPWR too

Most init processes implement a handler for SIGPWR that gracefully
stops all child processes when shutting down a machine. Some other
technologies rely on this signal - e.g. Busybox powered LXC
containers.

This patch makes busybox init halt when receiving SIGPWR.

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libbb: add sketch of tentative 'better' passwd/group API

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

devfsd: remove static variable

function                                             old     new   delta
static.msg                                             4       -      -4
get_uid_gid                                          114     107      -7
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/1 up/down: 0/-11)             Total: -11 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

build system: do not generate MAX_APPLET_NAME_LEN (unused)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

logread: don't call shmdt() before exit, kernel does it for us.

function                                             old     new   delta
logread_main                                         472     466      -6
interrupted                                           20       9     -11
error_exit                                            20       -     -20
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/2 up/down: 0/-37)             Total: -37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

logread: flush output. closes 6710

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

awk: fix a bug in argc counting in recent change

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

rfkill: use new-style config/kbuild/applet

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

tar: prevent empty file to be treated as valid tarball

function                                             old     new   delta
tar_main                                             879     895     +16

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

fix a copy/paste error in last tar testcase name

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

tar: add a testcase for previous commit

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

tar: fix exitcode check for MMU-spawned unpacking helpers

Testcase: tar xvzf EMPTY_FILE

function                                             old     new   delta
open_transformer                                     102     106      +4
get_header_tar                                      1781    1785      +4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libbb: move nuke_str() from passwd into libbb

function                                             old     new   delta
nuke_str                                               -      15     +15
ask_and_check_password_extended                      215     206      -9
init_main                                            781     771     -10
nuke_str                                              27       -     -27
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/2 up/down: 15/-46)            Total: -31 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

comment tweak

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

sulogin: use common password-checking routine.

This needed some extensions correct_passwd() function,
which got renamed ask_and_check_password() to better describe what it does.

function                                             old     new   delta
ask_and_check_password_extended                        -     215    +215
ask_and_check_password                                 -      12     +12
vlock_main                                           394     397      +3
sulogin_main                                         494     326    -168
correct_password                                     207       -    -207
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 1/1 up/down: 230/-375)         Total: -145 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

archival/*: move "config:" snippets into .c files

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>