du: document incompatibility with standard tool

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
CONFIG_PID_FILE_PATH: new configuration option for pidfile paths

We set a default path for the directory where pidfiles are create
when FEATURE_PIDFILE is selected.  The default has no effect on
applets which must specify a pidfile path on the command line to
run, and it can be overridden by applets which optionally allow
the user to specify the pidfile path.

We also add pidfile write/remove support for klogd, ntpd and watchdog.
For syslogd, we add a missing remove_pidfile() for better cleanup
on daemon exit.

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
ifenslave: fix missing close paren

Reported-by: David J Cozatt <ygdrasil@comcast.net>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
powertop: fix error message

Application tries to use timer_stats module instead of cpufreq_stats.
Error message is printed if opening of the file /proc/timer_stats fails.

Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
dmesg: handle multi-char log levels

Since Linux 3.5 (7ff9554bb5: printk: convert byte-buffer to variable-length
record buffer), klog buffer can now contain log lines with multi-char
loglevel indicators (<[0-9]+>) - So we can no longer just skip 3 bytes.

Instead skip past the terminating '>' like util-linux does.

function                                             old     new   delta
dmesg_main                                           266     280     +13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 13/0)               Total: 13 bytes

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
klogd: handle multi-char log levels

Since Linux 3.5 (7ff9554bb5: printk: convert byte-buffer to variable-length
record buffer), klog buffer can now contain log lines with multi-char
loglevel indicators (<[0-9]+>) - So use strtoul to parse it.

function                                             old     new   delta
klogd_main                                           490     525     +35
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 35/0)               Total: 35 bytes

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
syslogd: add option to log to Linux kernel printk buffer

Why invent our own shared memory circular buffer when the kernel has a
perfectly fine one already?

This can be used as a smaller/simpler alternative to the syslogd IPC support
(as IPC shmem/klogd/logread aren't needed), while also allowing centralised
logging of everything (kernel messages, userspace bootup and syslog)
when used together with ttyprintk.

Notice that kernel 3.5+ is needed to store syslog facility in printk buffer,
otherwise only the priority is stored.

bloat-o-meter compared to IPC+klogd+logread:
function                                             old     new   delta
get_linux_version_code                                 -      84     +84
lbb_prepare                                           25      90     +65
applet_nameofs                                         6       -      -6
static.stdout@@GLIBC_2                                 8       -      -8
applet_names                                          23       9     -14
bb_msg_standard_output                                16       -     -16
init_sem                                              18       -     -18
xatoull_range                                         19       -     -19
overlapping_strcpy                                    21       -     -21
init_data                                             56      32     -24
applet_main                                           24       -     -24
main                                                 124      99     -25
full_write2_str                                       26       -     -26
error_exit                                            26       -     -26
bb_basename                                           30       -     -30
sem_up                                                32       -     -32
interrupted                                           35       -     -35
fflush_stdout_and_exit                                38       -     -38
bb_banner                                             46       -     -46
find_applet_by_name                                   59       -     -59
bb_signals_recursive_norestart                        90       -     -90
run_applet_no_and_exit                               104       -    -104
timestamp_and_log                                    651     523    -128
syslogd_main                                         798     581    -217
xstrtoull_range_sfx                                  267       -    -267
run_applet_and_exit                                  432       -    -432
klogd_main                                           490       -    -490
logread_main                                         508       -    -508
.rodata                                             1870     937    -933
bb_common_bufsiz1                                   8193       -   -8193
------------------------------------------------------------------------------
(add/remove: 2/26 grow/shrink: 1/6 up/down: 149/-11829)    Total: -11680 bytes

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
blkid: add type display for hfsplus

Signed-off-by: Sven-Göran Bergh <sgb@systemasis.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
volume_id: display hfs[+] 128-bit UUID properly

Signed-off-by: Sven-Göran Bergh <sgb@systemasis.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
volume_id: uuid_format small code shrink

function                                             old     new   delta
volume_id_set_uuid                                   318     300     -18

Signed-off-by: Sven-Göran Bergh <sgb@systemasis.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
whitespace fixes. no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
volume_id: add squashfs detection

function                                             old     new   delta
volume_id_probe_squashfs                               -      74     +74
fs1                                                   12      16      +4

Signed-off-by: Sven-Göran Bergh <sgb@systemasis.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Remove redundant 'config FEATURE_VOLUMEID_SQUASHFS'

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
ntpd: fix incorrect m_status field in outgoing packets. Closes 5120

When using busybox ntpd with an NTPv3 client and NTPv4 server (or vice
versa), the version numbers can be incorrectly ORed together, yielding
the bogus value of "NTPv7".  This makes ntpd unusable with clients
such as Chrony and Windows "Internet Time".

This patch avoids the version mangling, by copying only the Leap
Indicator bits from the server's status field.

Signed-off-by: Paul Marks <paul@pmarks.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
sha3sum: new applet

function                                             old     new   delta
KeccakF                                                -     496    +496
KeccakF_RoundConstants                                 -     192    +192
sha3_hash                                              -     171    +171
sha3_end                                               -      40     +40
hash_file                                            274     299     +25
KeccakF_RotationConstants                              -      25     +25
KeccakF_PiLane                                         -      25     +25
packed_usage                                       29213   29232     +19
sha3_begin                                             -      18     +18
KeccakF_Mod5                                           -      10     +10
applet_names                                        2445    2453      +8
applet_main                                         1420    1424      +4
applet_nameofs                                       710     712      +2
------------------------------------------------------------------------------
(add/remove: 8/0 grow/shrink: 9/7 up/down: 1049/-54)         Total: ~995 bytes

Signed-off-by: Lauri Kasanen <curaga@operamail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
whitespace cleanup. no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
sha3: make size/speed optimization decision configurable

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
whitespace fixes. no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
sha3: another speedup for SHA3_SMALL=0 case

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
sha3: code shrink

function                                             old     new   delta
KeccakF                                             1064    1053     -11

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