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Author SHA1 Message Date
Michal Kazior
b817699e6c udhcp: bind to device even for ucast packets 
There are cases where binding to source IP and
destination IP is insufficient to guarantee sane
xmit netdev.

One case where this can fail is when
route-matching netdev carrier is down (cable
unplugged, wifi disconnected), or the netdev is
admin down. Then all the IP based bindings (bind()
+ connect()) will seemingly succeed but the actual
packet can go out through a default gw path.

Depending on the network this happens on
it can create issues or false alarms. It can
also leak some subnet info across networks that
shouldn't be routed.

As such better be safe than sorry and bind to a
netdev to be sure it's used for xmit.

function                                             old     new   delta
udhcp_send_kernel_packet                             293     336     +43
send_packet                                          182     188      +6
bcast_or_ucast                                        37      43      +6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 55/0)               Total: 55 bytes

Signed-off-by: Michal Kazior <michal@plume.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-15 21:44:21 +01:00
Denys Vlasenko
01004f9796 libbb: enable fixed 4k pagesize for 32bit ARM 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-15 21:24:04 +01:00
Denys Vlasenko
4a9ec95565 tls: code shrink in AES code 
function                                             old     new   delta
aes_cbc_decrypt                                      862     847     -15

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-15 18:47:25 +01:00
Denys Vlasenko
fad8d6b6c0 build system: combat gcc zealotry in data alignment, now for x86_64 too 
function                                             old     new   delta
.rodata                                           182928  182620    -308

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-15 18:39:05 +01:00
Denys Vlasenko
2aaacc1453 dd: support for O_DIRECT i/o 
Based on patch by Akash Hadke <hadkeakash4@gmail.com>

function                                             old     new   delta
dd_read                                                -      66     +66
clear_O_DIRECT                                         -      55     +55
write_and_stats                                      102     135     +33
dd_main                                             1578    1601     +23
static.oflag_words                                    19      26      +7
static.iflag_words                                    22      29      +7
packed_usage                                       33665   33668      +3
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 5/0 up/down: 194/0)             Total: 194 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-14 20:27:57 +01:00
Denys Vlasenko
c7b858ff8d libbb: add and use infrastructure for fixed page size optimization 
function                                             old     new   delta
procps_scan                                         1121    1118      -3
getpagesize                                            6       -      -6
rpm_main                                            1037    1027     -10
rpm2cpio_main                                        120     110     -10
ptok                                                  38      21     -17
time_main                                           1282    1261     -21
mkswap_main                                          317     278     -39
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/6 up/down: 0/-106)           Total: -106 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-14 18:54:30 +01:00
Denys Vlasenko
fd3c512f88 libbb: create and use mmap() helpers 
function                                             old     new   delta
mmap_anon                                              -      22     +22
mmap_read                                              -      21     +21
xmmap_anon                                             -      16     +16
rpm_gettags                                          465     447     -18
bb_full_fd_action                                    498     480     -18
uevent_main                                          337     310     -27
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 0/3 up/down: 59/-63)             Total: -4 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-14 18:25:28 +01:00
Denys Vlasenko
db793480cb build system: combat gcc zealotry in data alignment 
text	   data	    bss	    dec	    hex	filename
1020934	    559	   5052	1026545	  fa9f1	busybox_old
1020750	    559	   5052	1026361	  fa939	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-14 05:53:45 +01:00
Denys Vlasenko
a8e19608fc hush: code shrink 
function                                             old     new   delta
run_applet_main                                        -      20     +20
builtin_kill                                         296     288      -8
builtin_test                                          19      10      -9
builtin_printf                                        19      10      -9
builtin_echo                                          19      10      -9
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/4 up/down: 20/-35)            Total: -15 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-14 03:52:54 +01:00
Denys Vlasenko
84d5eddb25 help text: replace [OPTIONS] with actual options (if not too long) 
function                                             old     new   delta
packed_usage                                       33620   33665     +45

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 22:34:05 +01:00
Denys Vlasenko
63139b531f hush: if login shell, also source ~/.profile 
function                                             old     new   delta
hush_main                                           1101    1151     +50

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 22:00:56 +01:00
Denys Vlasenko
1b367cbeda examples: remove /sbin/ prefixes, system should be configured with $PATH to find utilities 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 21:35:26 +01:00
Denys Vlasenko
5d553bc558 more --help text tweaks 
function                                             old     new   delta
packed_usage                                       33545   33581     +36

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 19:18:28 +01:00
Denys Vlasenko
11f1a2553e help text tweaks 
function                                             old     new   delta
packed_usage                                       33547   33545      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 19:04:19 +01:00
Denys Vlasenko
49142d48bd hush: NOMMU fix for hush-psubst/tick6.tests 
function                                             old     new   delta
hush_main                                           1759    1766      +7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 18:44:07 +01:00
Denys Vlasenko
9cabd17e55 hush: fix -c SCRIPT handling 
function                                             old     new   delta
hush_main                                           1763    1759      -4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 18:24:11 +01:00
Denys Vlasenko
31df5a3eee ash: reset SIGHUP earlier: allows HUP traps in .profile, closes 13371 
function                                             old     new   delta
ash_main                                            1188    1203     +15

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 16:36:28 +01:00
Denys Vlasenko
6c5f4296dc traceroute: code shrink 
function                                             old     new   delta
hexdump_if_verbose                                     -     255    +255
common_traceroute_main                              1668    1644     -24
hexdump                                              239       -    -239
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/1 up/down: 255/-263)           Total: -8 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 15:58:47 +01:00
Denys Vlasenko
623e55a396 traceroute: even with -v, don't show other ping processes reply's 
function                                             old     new   delta
traceroute_init                                     1135    1151     +16
common_ping_main                                    1919    1935     +16
common_traceroute_main                              1715    1668     -47
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 32/-47)            Total: -15 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 15:53:06 +01:00
Denys Vlasenko
d067acb005 traceroute: simpler hexdump() 
function                                             old     new   delta
hexdump                                              270     239     -31

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 15:10:07 +01:00
Denys Vlasenko
b4b1828076 traceroute: make "ipv4 or ipv6?" cheaper to find out 
function                                             old     new   delta
traceroute_init                                     1131    1135      +4
hexdump                                              274     270      -4
common_traceroute_main                              1730    1715     -15
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/2 up/down: 4/-19)             Total: -15 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 14:58:11 +01:00
Denys Vlasenko
8055173128 traceroute: don't set SO_DONTROUTE on recv socket, it only affects send 
function                                             old     new   delta
traceroute_init                                     1147    1131     -16

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 14:18:05 +01:00
Denys Vlasenko
724c7df683 traceroute: untangle main loop 
function                                             old     new   delta
common_traceroute_main                              1785    1730     -55

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-12 21:44:32 +01:00
Denys Vlasenko
e76f03b267 traceroute: commonalize verbose printing 
function                                             old     new   delta
hexdump                                                -     274    +274
traceroute_init                                     1172    1147     -25
pr_type                                               79       -     -79
common_traceroute_main                              2091    1785    -306
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/2 up/down: 274/-410)         Total: -136 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-12 21:09:21 +01:00
Denys Vlasenko
df5c5394b0 traceroute: set IP_PKTINFO to see correct local IP of received pkt (fixes -v display) 
Also, assorted code shrink:

function                                             old     new   delta
traceroute_init                                     1210    1172     -38
common_traceroute_main                              2141    2091     -50
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-88)             Total: -88 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-12 20:09:52 +01:00
Denys Vlasenko
cc55bbef75 traceroute: code shrink 
Move init code to a separate function.

function                                             old     new   delta
traceroute_init                                        -    1203   +1203
common_traceroute_main                              3391    2141   -1250
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 1203/-1250)        Total: -47 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-12 18:09:45 +01:00
Denys Vlasenko
70726640b3 traceroute: code shrink 
Do not pass "from" and "to" addresses as parameters, keep them in globals

function                                             old     new   delta
common_traceroute_main                              3426    3391     -35

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-12 18:09:45 +01:00
Denys Vlasenko
d0dea17900 traceroute: code shrink 
Do not byteswap ident (why we were doing it?)

function                                             old     new   delta
common_traceroute_main                              3544    3426    -118

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-12 18:09:45 +01:00
Denys Vlasenko
3978adc445 traceroute: fix traceroute6 -I (icmp mode) 
function                                             old     new   delta
common_traceroute_main                              3530    3544     +14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-12 18:09:45 +01:00
Denys Vlasenko
ef2366cdca nsenter: stop option parsing on 1st non-option 
"nsenter ls -l" gives: invalid option -- 'l'

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-12 08:44:32 +01:00
Denys Vlasenko
030fe31760 libbb: make msleep() result in only one syscall instead of looping 
function                                             old     new   delta
msleep                                                45      52      +7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-11 16:48:47 +01:00
Denys Vlasenko
56ee576507 mount: fix incorrect "success" exitcode if loop device setup fails 
When mounting, in parallel, multiple loop devices (squashfs for the
submitter's case), the following behavior can be observed:

stat64(/path/to/image, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0
openat(AT_FDCWD, /path/to/image, O_RDWR|O_LARGEFILE) = 3
openat(AT_FDCWD, /dev/loop-control, O_RDWR|O_LARGEFILE|O_CLOEXEC) = 4
ioctl(4, LOOP_CTL_GET_FREE)             = 12
close(4)                                = 0
openat(AT_FDCWD, /dev/loop12, O_RDWR|O_LARGEFILE) = 4
ioctl(4, LOOP_GET_STATUS64, {lo_offset=0, lo_number=12, lo_flags=LO_FLAGS_AUTOCLEAR, lo_file_name=/path/to/image, ...}) = 0
close(4)                                = 0
close(3)                                = 0
write(2, "mount: can't setup loop device\n", 31mount: can't setup loop device
) = 31
exit_group(0)                           = ?
+++ exited with 0 +++

The ioctl LOOP_CTL_GET_FREE has resulted in the same result for
a competing mount process. The subsequent ioctl LOOP_GET_STATUS64
fails, having succeeded for the competing mount process.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-09 20:56:43 +01:00
Denys Vlasenko
e7d853b4eb wget: do not ftruncate if -O- is used, closes 13351 
function                                             old     new   delta
wget_main                                           2558    2571     +13
retrieve_file_data                                   612     621      +9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 22/0)               Total: 22 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-08 19:06:28 +01:00
Xabier Oneca
abaee4aada mkdtemp: proper error detection on mktemp 
On error, mktemp returns an empty string, not NULL.

Signed-off-by: Xabier Oneca <xoneca@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-08 18:46:32 +01:00
Denys Vlasenko
c9b93cf290 tar: expand --help 
function                                             old     new   delta
packed_usage                                       33486   33590    +104

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-08 16:46:41 +01:00
Denys Vlasenko
34c5115a7f mount: implement -o nosymfollow, remove bogus -o union 
The (1 << 8) MS_ flag is MS_NOSYMFOLLOW, not MS_UNION.
As far as I see in git history of kernel and util-linux,
MS_UNION did not ever exist.
Why did it appear in our tree in 2009?...

function                                             old     new   delta
mount_option_str                                     379     385      +6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-06 21:56:22 +01:00
Denys Vlasenko
696c38ddca mount: add -o nostrictatime and -o [no]lazytime 
function                                             old     new   delta
mount_option_str                                     345     379     +34
mount_options                                        176     188     +12
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 46/0)               Total: 46 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-06 20:59:41 +01:00
Denys Vlasenko
b1eedfcfa1 mount: do not guess mount as NFS if "hostname:" contains slashes 
function                                             old     new   delta
singlemount                                         1273    1295     +22

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-05 14:14:11 +01:00
Denys Vlasenko
758c2bd58e awk: add a test that $NF is empty 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-04 19:00:06 +01:00
Denys Vlasenko
f4f6e5144b libbb: exec_login_shell() - new function 
function                                             old     new   delta
exec_login_shell                                       -      12     +12
sulogin_main                                         247     240      -7
login_main                                           960     953      -7
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/2 up/down: 12/-14)             Total: -2 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-02 21:51:08 +01:00
Denys Vlasenko
0622416fec libbb: code shrink in exec_shell() 
function                                             old     new   delta
exec_shell                                           129     120      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-02 21:39:57 +01:00
Denys Vlasenko
2075aa93e0 libbb: rename run_shell() to exec_shell() 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-02 21:28:47 +01:00
Denys Vlasenko
b4f93f562d mount: do not guess bind mounts as nfs 
Fails as follows:

$ mount -o bind /dev/disk/by-path/pci-0000:13:00.0-scsi-0:0:3:0 /dir
mount: bad address '/dev/disk/by-path/pci-0000'

function                                             old     new   delta
singlemount                                         1256    1273     +17

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-02 19:10:22 +01:00
Denys Vlasenko
665a659530 awk: FS regex matches only non-empty separators (gawk compat) 
function                                             old     new   delta
awk_split                                            484     553     +69

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-02 19:07:31 +01:00
Denys Vlasenko
50ead33c45 login: log to syslog every bad password, not only 3rd 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-02 17:47:16 +01:00
Denys Vlasenko
6599e380ed mount: make filesystems[] array byte-aligned 
text	   data	    bss	    dec	    hex	filename
1021120	    559	   5052	1026731	  faaab	busybox_old
1021092	    559	   5052	1026703	  faa8f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-11-30 15:10:43 +01:00
Denys Vlasenko
6cc4962b60 decrease padding: gcc-9.3.1 slaps 32-byte alignment on arrays willy-nilly 
text	   data	    bss	    dec	    hex	filename
1021236	    559	   5052	1026847	  fab1f	busybox_old
1021120	    559	   5052	1026731	  faaab	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-11-30 14:58:02 +01:00
Denys Vlasenko
965b795b87 decrease paddign: gcc-9.3.1 slaps 32-byte alignment on arrays willy-nilly 
text	   data	    bss	    dec	    hex	filename
1021988	    559	   5052	1027599	  fae0f	busybox_old
1021236	    559	   5052	1026847	  fab1f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-11-30 13:03:03 +01:00
Denys Vlasenko
2fba2f5bb9 unicode: relax array alignment for tables 
text	   data	    bss	    dec	    hex	filename
1022075	    559	   5052	1027686	  fae66	busybox_old
1021988	    559	   5052	1027599	  fae0f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-11-30 11:30:17 +01:00
Denys Vlasenko
33e955ab91 unicode: fix handling of short 1-4 char tables 
function                                             old     new   delta
in_uint16_table                                       92     107     +15

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-11-30 11:18:00 +01:00