Commit Graph

16649 Commits

Author SHA1 Message Date
Denys Vlasenko
4ac35a30db ash: make interactive ^C break out of PS2 mode
Based on patch by Joachim Nilsson <troglobit@gmail.com>

function                                             old     new   delta
pgetc                                                570     547     -23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-11-16 13:09:37 +01:00
Denys Vlasenko
dc9c10a7b2 hush: make interactive ^C break out of PS2 mode
function                                             old     new   delta
syntax_error_unterm_str                                -      26     +26
parse_stream                                        2238    2251     +13
fgetc_interactive                                    243     249      +6
parse_dollar                                         824     817      -7
syntax_error_unterm_ch                                29      21      -8
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/2 up/down: 45/-15)             Total: 30 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-11-16 13:00:44 +01:00
Joachim Nilsson
efe99b59c6 syslogd: delay PID file creation until syslogd is ready
This patch moves the creation of the PID file until after syslogd has
set up signal handlers and is ready.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-11-16 12:12:04 +01:00
Joachim Nilsson
a4747230ab login: update UTMP before forking
/bin/login updates the preliminary UTMP record created by /bin/getty for
$LOGNAME.  However, if the PID of login is not the same as getty, then
it will create a new entry.  This causes GLIBC getlogin(3) to return the
string 'LOGIN' (set by getty) instead of $LOGNAME.  This affects tools
like /usr/bin/logname but also various 3rd party PAM applications.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-11-16 12:09:53 +01:00
Denys Vlasenko
5323af7f51 awk: fix dodgy multi-char separators splitting logic
function                                             old     new   delta
awk_split                                            521     484     -37

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-11-16 10:40:32 +01:00
Christian Eggers
89f063b900 chrt: support for musl C library
musl "implements" several sched_xxx() functions by returning ENOSYS. As
an alternative, either pthread_(g|s)etschedparam() or direct syscalls
can be used.

References: https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/schedutils/chrt.c?id=fcc3078754291d2f5121797eb91b364f8e24b2f1
References: http://git.musl-libc.org/cgit/musl/commit/src/sched/sched_setscheduler.c?id=1e21e78bf7a5c24c217446d8760be7b7188711c2
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-11-15 20:26:46 +01:00
Denys Vlasenko
64981b4c8e hush: document bugs in [[ =~ ]] comparison
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-11-01 18:47:24 +01:00
Denys Vlasenko
a7c065354f shell: update comments on the status of [[ ]] compat
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-31 04:32:34 +01:00
Denys Vlasenko
b259e97d47 hush: add tests for unquoted < > in [[ ]]
They pass.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-31 03:51:37 +01:00
Denys Vlasenko
d2241f5902 shell: better support of [[ ]] bashism
Still rather rudimentary for ash

function                                             old     new   delta
binop                                                433     589    +156
check_operator                                        65     101     +36
done_word                                            736     769     +33
test_main                                            405     418     +13
parse_stream                                        2227    2238     +11
ops_texts                                            124     133      +9
ops_table                                             80      86      +6
run_pipe                                            1557    1562      +5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 8/0 up/down: 269/0)             Total: 269 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-31 03:34:07 +01:00
Denys Vlasenko
112453acf2 od: unbreak it
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-25 23:44:22 +01:00
Denys Vlasenko
32e1f69ae0 compat: move hexdump -R functionality to xxd -r
function                                             old     new   delta
xxd_main                                             466     680    +214
packed_usage                                       33474   33483      +9
hexdump_opts                                          17      16      -1
hexdump_main                                         565     401    -164
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/2 up/down: 223/-165)           Total: 58 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-25 16:06:45 +01:00
Denys Vlasenko
e16f7eb596 hush: output bash-compat killing signal names
This significantly syncronises ash-signals and hush-signals tests.

function                                             old     new   delta
process_wait_result                                  449     450      +1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-24 04:26:43 +02:00
Denys Vlasenko
b65d6cb00f hush: do not print killing signal name in cmd_whihc_dies_on_signal
function                                             old     new   delta
process_wait_result                                  438     449     +11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-24 03:33:32 +02:00
Denys Vlasenko
079487b487 hexdump: fix dup block comparison
function                                             old     new   delta
bb_dump_dump                                        1523    1520      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-20 19:29:32 +02:00
Denys Vlasenko
dac5b83142 xxd: fix printing of trailing spaces
function                                             old     new   delta
bb_dump_dump                                        1497    1523     +26
xxd_main                                             459     466      +7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 33/0)               Total: 33 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-20 18:57:02 +02:00
Denys Vlasenko
085f19cdff uudecode: fix possible signed char bug
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-07 17:02:46 +02:00
Denys Vlasenko
2496616b0a avoid using strok - eliminates use of hidden global variable
function                                             old     new   delta
udhcp_str2optset                                     616     650     +34
setpriv_main                                         950     975     +25
switch_root_main                                     688     706     +18
parse                                                958     970     +12
getopt_main                                          622     628      +6
parse_resolvconf                                     302     306      +4
mpstat_main                                         1139    1142      +3
static.p                                               4       -      -4
cdcmd                                                717     702     -15
strtok                                               148       -    -148
------------------------------------------------------------------------------
(add/remove: 0/3 grow/shrink: 7/1 up/down: 102/-167)          Total: -65 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-06 02:36:47 +02:00
Xabier Oneca
535a509846 httpd: code shrink
Use decode_base64() from uuencode.c when uudecode/base64 applets are included.
That function is bigger than httpd's decodeBase64(), so we use the old one when
those applets are disabled. Bloat-o-meter when one of those is enabled:

function                                             old     new   delta
handle_incoming_and_exit                            2371    2265    -106

Signed-off-by: Xabier Oneca <xoneca@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-06 02:36:06 +02:00
Rui Salvaterra
eecd6f7a6c ip rule: add support for fwmark/fwmask for policy routing
This adds support for fwmark/fwmask in ip rule which is needed, for example, in
OpenWrt's mwan3. Masks are supported since Linux 2.6.19.

Fixes: https://bugs.busybox.net/show_bug.cgi?id=11621

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-03 22:08:39 +02:00
Denys Vlasenko
16e82c61d4 tar: fix fallout of last_char_is(NULL) no longer being allowed
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-02 18:30:53 +02:00
Denys Vlasenko
a90a54aead udhcp: remove struct packing attribute, eliminates gcc-9.x
"error: taking address of packed member of 'struct ip_udp_dhcp_packet'
may result in an unaligned pointer value" here:

	udhcp_dump_packet(&packet.data);

and in other places.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-01 23:49:16 +02:00
Denys Vlasenko
689d0650ab libbb: shrink recursive_action() by reducing memory pressure
function                                             old     new   delta
recursive_action1                                      -     316    +316
file_action_grep                                     161     164      +3
add_to_prg_cache_if_socket                           202     205      +3
depmod_main                                          509     511      +2
writeFileToTarball                                   488     489      +1
parse_module                                         281     282      +1
fileAction                                           207     208      +1
act                                                  189     190      +1
add_to_dirlist                                        65      64      -1
writeTarFile                                         196     194      -2
uuidcache_init                                        47      45      -2
uuidcache_check_device                               109     107      -2
true_action                                            8       6      -2
run_parts_main                                       310     308      -2
netstat_main                                         534     532      -2
lsusb_main                                            29      27      -2
lspci_main                                            45      43      -2
initial_scan                                         138     136      -2
grep_main                                            845     843      -2
find_main                                            482     480      -2
config_file_action                                   437     435      -2
chmod_main                                           142     140      -2
dirAction                                             14      10      -4
diff_main                                           1544    1540      -4
chown_main                                           154     148      -6
skip_dir                                             136     129      -7
dir_act                                              191     184      -7
recursive_action                                     453      69    -384
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 7/20 up/down: 328/-439)        Total: -111 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-01 21:52:16 +02:00
Denys Vlasenko
3c3928fc65 tydy up a few uses of recursive_action(), no logic changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-01 20:27:28 +02:00
Denys Vlasenko
4a0eb0370c gcc-9.x warning fixes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-01 03:07:22 +02:00
Denys Vlasenko
aaa0709e7b libbb: do not open-code __errno_location() call
Thanks dalias!

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-01 01:44:26 +02:00
Denys Vlasenko
841878e7ee shell: remove FAST_FUNC from a static function
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-01 00:57:05 +02:00
Denys Vlasenko
b1c7a66ca6 libbb: extend "errno pointer" trick to other than __GLIBC__
Savings on musl:

function                                             old     new   delta
resume_main                                          582     614     +32
lbb_prepare                                            -      20     +20
seq_main                                             432     449     +17
fgetsetversion                                        74      88     +14
...
script_main                                         1207    1180     -27
close_silently                                        28       -     -28
shell_builtin_ulimit                                 655     626     -29
lineedit_read_key                                    280     247     -33
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 25/123 up/down: 182/-882)      Total: -700 bytes
   text	   data	    bss	    dec	    hex	filename
1005858	    551	   5676	1012085	  f7175	busybox_old
1005136	    551	   5680	1011367	  f6ea7	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-01 00:34:44 +02:00
Steffen Trumtrar
6561e07460 mount: support the sizelimit and offset option for loop devices
Starting with linux kernel v5.4 squashfs has a more strict parameter
checking implemented. Unlike util-linux mount, busybox never supported
the sizelimit option but simply forwards it to the kernel.
Since v5.4 mounting will fail with

    squashfs: Unknown parameter 'sizelimit'

Support the sizelimit parameter by setting it in the LOOP_SET_STATUS64
structure before handing it to the kernel.

While at it also add support for the offset option, which currently will
always be set to 0.

function                                             old     new   delta
cut_out_ull_opt                                        -     167    +167
singlemount                                         1230    1266     +36
set_loop                                             834     862     +28
losetup_main                                         479     483      +4
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/0 up/down: 235/0)             Total: 235 bytes

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-10-01 00:31:11 +02:00
Denys Vlasenko
abefc3c276 libbb: fold common64_hash() into its only user
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-09-30 22:22:04 +02:00
Denys Vlasenko
bd202a5ec1 xargs: fix -I SUBSTR behaviour
function                                             old     new   delta
process_stdin_with_replace                           165     204     +39

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-09-30 00:00:43 +02:00
Denys Vlasenko
d4dd48f294 shell: add testsuite for "wait $pid" waiting for other tasks
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-09-29 22:36:36 +02:00
Denys Vlasenko
91e11eba6e ash: jobs: Fix waitcmd busy loop
Upstream commit:

    Date: Tue, 2 Jun 2020 23:46:48 +1000
    jobs: Fix waitcmd busy loop

    We need to clear gotsigchld in waitproc because it is used as
    a loop conditional for the waitcmd case.  Without it waitcmd
    may busy loop after a SIGCHLD.

    This patch also changes gotsigchld into a volatile sig_atomic_t
    to prevent compilers from optimising its accesses away.

    Fixes: 6c691b3e5099 ("jobs: Only clear gotsigchld when waiting...")
    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

This change also incorporates other changes to bring us closer to upstream.

function                                             old     new   delta
dowait                                               553     636     +83

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-09-29 20:35:55 +02:00
Denys Vlasenko
8d5f465a20 ash: jobs: Fix infinite loop in waitproc
Upstream commit:

    Date: Fri, 10 Apr 2020 21:03:09 +1000
    jobs: Fix infinite loop in waitproc

    After we changed the resetting of gotsigchld so that it is only
    done if jp is NULL, we can now get an infinite loop in waitproc
    if gotsigchld is set but there is no outstanding child because
    everything had been waited for previously without gotsigchld being
    zeroed.

    This patch fixes it by always zeroing gotsigchld as we did before.
    The bug that the previous patch was trying to fix is now resolved
    by switching the blocking mode to DOWAIT_NORMAL after the specified
    job has been completed so that we really do wait for all outstanding
    dead children.

    Reported-by: Harald van Dijk <harald@gigawatt.nl>
    Fixes: 6c691b3e5099 ("jobs: Only clear gotsigchld when waiting...")
    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

function                                             old     new   delta
dowait                                               553     631     +78

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-09-29 20:21:27 +02:00
Denys Vlasenko
777a6357c0 ash: remove a tentative TODO, it's a wrong idea
Upstream tried it, and then reverted by:

    From: Herbert Xu <herbert@gondor.apana.org.au>
    Date: Tue, 26 May 2020 23:19:05 +1000
    parser: Fix double-backslash nl in old-style command sub

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-09-29 20:21:27 +02:00
Denys Vlasenko
afb5d8b2db ntpd: fix the case where two replies received at once and first one causes a step
function                                             old     new   delta
recv_and_process_peer_pkt                           2476    2486     +10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-09-29 14:19:17 +02:00
Sergey Ponomarev
a949399d17 httpd: Make Deny/Allow by IP config support optional
When disabled:

function                                             old     new   delta
if_ip_denied_send_HTTP_FORBIDDEN_and_exit             52       -     -52
handle_incoming_and_exit                            2201    2097    -104
scan_ip                                              170       -    -170
parse_conf                                          1365    1065    -300
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/2 up/down: 0/-626)           Total: -626 bytes

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-08-16 14:58:31 +02:00
Sergey Ponomarev
4864a68596 httpd: Support caching via ETag header
If server responds with ETag then next time client can resend it via If-None-Match header.
Then httpd will check if file wasn't modified and if not return 304 Not Modified status code.
The ETag value is constructed from file's last modification date in unix epoch and it's size:
"hex(last_mod)-hex(file_size)" e.g. "5e132e20-417" (with quotes).
That means that it's not completely reliable as hash functions but fair enough.
The same form of ETag is used by Nginx so load balancing of static content is safe.

function                                             old     new   delta
handle_incoming_and_exit                            2135    2201     +66
http_response                                         88      96      +8
send_headers                                         676     683      +7
parse_conf                                          1362    1365      +3
http_response_type                                    22      24      +2
send_file_and_exit                                   847     841      -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/1 up/down: 86/-6)              Total: 80 bytes

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-08-15 23:54:48 +02:00
Sergey Ponomarev
b6efac31d8 httpd: Don't add Last-Modified header to response
The Last-Modified header is used for caching.
The client (browser) will send back the received date to server via If-Modified-Since request header.
But both headers MUST be an RFC 1123 formatted string.
And the formatting consumes resources on request parsing and response generation.
Instead we can use ETag header.
This simplifies logic and the only downside is that in JavaScript the document.lastModified will return null.

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-08-15 23:23:45 +02:00
Sergey Ponomarev
68f75bb9ce httpd: Don't add Date header to response
RFC 2616 sec. 14.18 says that server MUST send Date header.
But in fact the header make sense only for Cache-Control and can be omitted.
In the same time the Date eats power, CPU and network resources which are critical for embedded systems.

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-08-15 23:04:49 +02:00
Sergey Ponomarev
b414cdf5b4 httpd: Update to HTTP/1.1
HTTP v1.1 was released in 1999 year and it's time to update BB HTTPD.
Browsers may behave badly with HTTP/1.0
E.g. Chrome does not send the If-None-Match header with ETag.

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-08-15 22:51:14 +02:00
Eddie James
1a5d6fcbb5 hwclock: Fix settimeofday for glibc v2.31+
The glibc implementation changed for settimeofday, resulting in "invalid
argument" error when attempting to set both timezone and time with a single
call. Fix this by calling settimeofday twice

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-08-15 22:29:00 +02:00
Denys Vlasenko
a77f3ecf68 grep: for -L, exitcode 0 means files *without* matches were found, closes 13151
This is a recent change in GNU grep as well (after 3.1)

function                                             old     new   delta
grep_file                                           1215    1228     +13

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-08-15 00:39:30 +02:00
Ron Yorston
5c69ad0ecd build system: drop PLATFORM_LINUX
PLATFORM_LINUX is a hidden configuration option which is disabled by
default and enabled at over a hundred locations for features that are
deemed to be Linux specific.

The only effect of PLATFORM_LINUX is to control compilation of
libbb/match_fstype.c.  This file is only needed by mount and umount.

Remove all references to PLATFORM_LINUX and compile match_fstype.c
if mount or umount is enabled.

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-08-13 17:12:56 +02:00
Martin Lewis
9914d8b861 udhcpc: add support for long options
Duplicate options are currently overridden (only the last option is kept).
This leads to unexpected behavior when using long options.

The patch adds support for long options in compliance with RFC 3396.

Fixes #13136.

function                                             old     new   delta
udhcp_run_script                                     601     725    +124
optitem_unset_env_and_free                             -      38     +38
putenvp                                               46      59     +13
static.xmalloc_optname_optval                        718     717      -1
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/1 up/down: 175/-1)            Total: 174 bytes

Signed-off-by: Martin Lewis <martin.lewis.x84@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-08-13 16:48:07 +02:00
Christian Eggers
8a485b0a36 ip address: Add support for "valid_lft" and "preferred_lft" options
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-07-31 18:48:50 +02:00
Christian Eggers
31d34f3bd8 ip: Add support for "noprefixroute" option
The "noprefixroute" option suppresses automatic generation of a routing
table entry based on the interface's ip address.

The ifa_flags field has only 8 bit. If higher bits are set,
rta_tb[IFA_FLAGS] has to be used instead.

Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-07-31 18:45:36 +02:00
Christian Eggers
39925026f6 shell: Fix "read -d ''" behavior
With bash's read builtin it is possible to read from a file (e.g.
device-tree) until the first '\0' character:

IFS= read -r -d '' VARIABLE < file

In busybox ash the -d extension is also implemented, but checking the
read character for '\0' has to be performed after comparing with the
delimiter.

Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-07-31 18:42:30 +02:00
Sergey Ponomarev
a088da4476 httpd_indexcgi.c: use CSS for odd/even rows
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-07-31 18:14:54 +02:00
Sergey Ponomarev
197ae0f9ae httpd_indexcgi.c: minimize style CSS
Remove new lines \n and some semicolons ;. This minimize page style size from 655 to 604

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-07-31 17:53:48 +02:00