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2101 Commits

Author SHA1 Message Date
Denys Vlasenko
50db1f29bf sysctl: recognize ";comment" and "<whitespace>#comment" lines 
function                                             old     new   delta
config_read                                          639     699     +60

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 18:20:34 +02:00
Denys Vlasenko
20077c1429 libbb: make trim() return pointer to terminating NUL 
function                                             old     new   delta
trim                                                  80      90     +10
angle_address                                         56      50      -6
sysctl_main                                          282     273      -9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: +10/-15)           Total:  -5 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 17:50:35 +02:00
Denys Vlasenko
9cf89cdf84 sysctl: fix file parsing, do not require -w for VAR=VAL 
function                                             old     new   delta
sysctl_act_on_setting                                  -     451    +451
sysctl_main                                          222     282     +60
packed_usage                                       31744   31793     +49
config_read                                          604     639     +35
sysctl_act_recursive                                 612     163    -449
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/1 up/down: 595/-449)          Total: 146 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 13:45:22 +02:00
Denys Vlasenko
b182e9ad60 libbb: use _exit, not exit, in bb_daemonize_or_rexec() 
By the time we reach exit in parent, child already exited or execed.
We should not re-run libc cleanup code.

While at it, introduce bb_daemon_helper() and add a few comments.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 23:04:17 +02:00
Denys Vlasenko
dd5a40246b getopt32: move support for "always treat first arg as option" to users (tar/ar) 
Now getopt() never leaks (and never performs) any xmalloc's.

function                                             old     new   delta
ar_main                                              522     556     +34
tar_main                                             986    1014     +28
getopt32                                            1458    1350    -108
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 62/-108)           Total: -46 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 16:46:17 +02:00
Denys Vlasenko
727948e585 getopt32: factor out code to treat all args as options 
Working towards making getopt32() xmalloc-free

function                                             old     new   delta
make_all_argv_opts                                     -      58     +58
top_main                                             914     912      -2
getopt32                                            1517    1458     -59
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/2 up/down: 58/-61)             Total: -3 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 16:33:23 +02:00
Denys Vlasenko
19c9f31af1 nofork: fix a bug uncovered by hush testsuite (forgotten fflush) 
function                                             old     new   delta
run_nofork_applet                                    280     287      +7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-03 19:52:47 +02:00
Denys Vlasenko
39194f0309 new NOFORKs: pwdx,kill[all5],ttysize,realpath,readlink NOEXECs: date,resize 
function                                             old     new   delta
run_nofork_applet                                    258     280     +22
readlink_main                                        112     123     +11
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 33/0)               Total: 33 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-03 19:03:32 +02:00
Denys Vlasenko
84ea60ed65 line editing: make read_line_input() not take timeout param 
It's almost always -1.

function                                             old     new   delta
read_line_input                                     3902    3912     +10
new_line_input_t                                      24      31      +7
pgetc                                                583     585      +2
save_command_ps_at_cur_history                        80      78      -2
read_line                                             76      74      -2
fgetc_interactive                                    246     244      -2
addLines                                              84      82      -2
doCommands                                          2226    2222      -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/5 up/down: 19/-12)              Total: 7 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-02 17:27:28 +02:00
Denys Vlasenko
95f7953f2c do not use `a' quoting style in comments 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-02 14:26:33 +02:00
Ron Yorston
008fc9499a libbb: remove vdprintf 
Two reasons:

* it's only built for GNU C Library versions < 2 (released 1997)

* it isn't used anywhere in BusyBox

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-29 17:30:21 +02:00
Denys Vlasenko
147d2ce3dd standalone shell / prefer_applets: fix "exe" in comm fields 
function                                             old     new   delta
main                                                  92     106     +14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-29 02:19:01 +02:00
Denys Vlasenko
f128bdbbd7 shell: make standalone shell tab-complete "busybox" 
function                                             old     new   delta
busybox_main                                           -     624    +624
packed_usage                                       31758   31777     +19
applet_names                                        2638    2646      +8
applet_main                                         1528    1532      +4
applet_install_loc                                   191     192      +1
run_applet_and_exit                                  681      78    -603
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/1 up/down: 656/-603)           Total: 53 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-29 00:59:24 +02:00
Denys Vlasenko
86d5bf4246 config: trim/improve item names and help texts. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-27 02:59:13 +02:00
Denys Vlasenko
86981e3ad2 ash: allow "trap NUM [SIG]..." syntax 
While at it, make get_signum() return -1 for numeric strings >= NSIG.

function                                             old     new   delta
trapcmd                                              292     306     +14
get_signum                                           295     300      +5
builtin_trap                                         413     412      -1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 19/-1)              Total: 18 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-25 20:06:17 +02:00
Denys Vlasenko
ef0366eb4f libbb: avoid malloc/free in bb_unsetenv() 
function                                             old     new   delta
bb_unsetenv                                           55      83     +28

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-22 02:15:17 +02:00
Denys Vlasenko
72089cf6b4 config: deindent all help texts 
Those two spaces after tab have no effect, and always a nuisance when editing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-21 09:50:55 +02:00
Denys Vlasenko
a3df2fa525 config: merge "Busybox Settings" and "Busybox Library Tuning" into one menu 
Tweak a few help texts while at it

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-15 20:49:32 +02:00
Johannes Schindelin
e5b1f5af73 copyfd: guard use of munmap() with #if (windows builds need this) 
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-15 11:44:13 +02:00
Denys Vlasenko
7d7c7bb220 libbb: hide getnetbyaddr() inside "#if ENABLE_FEATURE_ETC_NETWORKS" block 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 20:17:17 +02:00
Denys Vlasenko
90678f0cd7 xxd: allow "-" as file name meaning stdin 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 16:29:30 +02:00
Denys Vlasenko
63214a68f1 libbb/dump: allow skipping over stdin too 
function                                             old     new   delta
next                                                 294     265     -29

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 16:18:16 +02:00
Denys Vlasenko
5f7904b6d1 libbb/dump: fix a few broken commits and shrink code 
function                                             old     new   delta
next                                                 310     294     -16

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 16:03:43 +02:00
Denys Vlasenko
a03ac60677 libbb: safe_write should not return EINTR 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 14:22:09 +02:00
Denys Vlasenko
75e90b1548 cat: fix "cat -An" ignoring -n; make numbering go througn all files 
function                                             old     new   delta
cat_main                                             418     428     +10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 10:47:18 +02:00
Denys Vlasenko
12a4f9afe7 libbb: do not die if setgid/setuid(real_id) on startup fails 
Based on a patch from Steven McDonald <steven@steven-mcdonald.id.au>:

This makes 'unshare --user' work correctly in the case where the user's
shell is provided by busybox itself.

'unshare --user' creates a new user namespace without any uid mappings.
As a result, /bin/busybox is setuid nobody:nogroup within the
namespace, as that is the only user. However, since no uids are mapped,
attempting to call setgid/setuid fails, even though this would do
nothing:

  $ unshare --user ./busybox.broken ash
  ash: setgid: Invalid argument

'unshare --map-root-user' still works, but because Linux only allows
uid/gid mappings to be set up once, creating a root mapping makes such
a namespace useless for creating multi-user containers.

With this patch, setgid and setuid will not be called in the case where
they would do nothing, which is always the case inside a new user
namespace because all uids are effectively mapped to nobody:

  $ id -u
  1000
  $ ls -lh busybox.fixed
  -rwsr-xr-x    1 root     root      826.2K May 21 00:33 busybox.fixed
  $ unshare --user ./busybox.fixed ash
  $ id -u
  65534

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-10 09:17:43 +02:00
Denys Vlasenko
69a5ec9dcc main: fix the case where user has "halt" as login shell. Closes 9986 
halt::0:0::/:/sbin/halt

function                                             old     new   delta
run_applet_and_exit                                  748     751      +3
run_applet_no_and_exit                               467     459      -8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-07 19:08:56 +02:00
Denys Vlasenko
a8cf9c5a3f libbb: new function bb_getgroups() - allocating wrapper around getgroups() 
function                                             old     new   delta
bb_getgroups                                           -     111    +111
nexpr                                                843     757     -86
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/1 up/down: 111/-86)            Total: 25 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-04 18:56:45 +02:00
Denys Vlasenko
d1f222c3b0 Change BB_EXTRA_VERSION: now it needs to contain any spaces/parenthesis 
Before this change, BB_EXTRA_VERSION of "" resulted in:

	"BusyBox v1.28.0.git () multi-call binary"

message, after the fix it is:

	"BusyBox v1.28.0.git multi-call binary"

While at it, eliminate BB_BT and BANNER single-use macros.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-04 16:01:12 +02:00
Denys Vlasenko
d4e4fdb5ce fixes for bugs found by make_single_applets.sh 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-03 21:31:16 +02:00
Denys Vlasenko
10ad622dc2 Spelling fixes in comments, documentation, tests and examples 
By klemens <ka7@github.com>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-17 16:13:32 +02:00
Denys Vlasenko
44c0ab4102 libbb: fix "error: redefinition of 'is_tty_secure'" 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-13 17:55:05 +02:00
Denys Vlasenko
a3de0b3b86 libbb: make check_password() also return CHECKPASS_PW_HAS_EMPTY_PASSWORD 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-13 13:04:05 +02:00
Denys Vlasenko
335681ca8e su: FEATURE_SU_BLANK_PW_NEEDS_SECURE_TTY 
When this feature is enabled, blank passwords are not accepted by su
unless the user is on a secure TTY defined in /etc/securetty. This
resembles the default PAM configuration of some Linux distros which
specify the nullok_secure option for pam_unix.so.

Based on patch by Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-13 12:57:04 +02:00
Kaarle Ritvanen
517a82c5b6 login: move check_securetty to libbb 
Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-13 12:39:03 +02:00
Kaarle Ritvanen
835ad3a984 libbb: GETOPT_RESET macro 
Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-12 20:11:34 +02:00
Denys Vlasenko
d9eb40c185 fix errors found with make_single_applets.sh 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-12 15:48:19 +02:00
Denys Vlasenko
8a134ec680 libbb: move isqrt from factor, use it in diff too 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-11 07:34:56 +02:00
Denys Vlasenko
4f0b540d08 modprobe: do not descend into /etc/modprobe.d/DIR/. Closes 8686 
Also expanded comments in recursive_action.c

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-06 15:23:26 +02:00
Denys Vlasenko
ab518eea9c mount: create loop devices with LO_FLAGS_AUTOCLEAR flag 
The "autolooped" mount (mount [-oloop] IMAGE /DIR/DIR)
always creates AUTOCLEARed loopdevs, so that umounting
drops them (and this does not require any code in the
umount userspace).
This happens since circa linux-2.6.25:
	commit 96c5865559cee0f9cbc5173f3c949f6ce3525581
	Date:    Wed Feb 6 01:36:27 2008 -0800
	Subject: Allow auto-destruction of loop devices
IOW: in this case, umount does not have to use -d
to drop the loopdev.

The explicit loop mount (mount /dev/loopN /DIR/DIR)
does not do this. In this case, umount without -d
should not drop loopdev.
Unfortunately, bbox umount currently always implies -d,
this probably needs fixing.

function                                             old     new   delta
set_loop                                             537     597     +60
singlemount                                         1101    1138     +37
losetup_main                                         419     432     +13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 110/0)             Total: 110 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-03-16 16:55:47 +01:00
Rostislav Skudnov
8762512fdb Replace int -> uint to avoid signed integer overflow 
An example of such an error (should be compiled with DEBUG_SANITIZE):

runtime error: left shift of 1 by 31 places cannot be represented in
type 'int'

Signed-off-by: Rostislav Skudnov <rostislav@tuxera.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-02-04 23:10:22 +01:00
Denys Vlasenko
b6871c1965 ps: avoid -o stat to contain spaces. Closes 9631 
function                                             old     new   delta
procps_scan                                         1227    1236      +9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-02-02 13:04:30 +01:00
Denys Vlasenko
35b54a3c24 libbb: match_fstype() is unreadable in the extreme, fixing it 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-30 00:45:05 +01:00
Denys Vlasenko
9967c9949e libbb: spawn_and_wait() fflushes before forking NOEXEC; child reinits logmode 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-26 01:13:58 +01:00
Denys Vlasenko
cb8e84e65a libbb: shrink sump.c 
function                                             old     new   delta
dot_flags_width_chars                                  -      16     +16
int_convs                                              -       7      +7
lcc                                                    7       -      -7
index_str                                             16       -     -16
rewrite                                             1013     937     -76
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 0/1 up/down: 23/-99)            Total: -76 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-25 16:21:00 +01:00
Denys Vlasenko
0f4364775f xxd: new applet 
Yet Another Hexdumper

function                                             old     new   delta
xxd_main                                               -     364    +364
packed_usage                                       31046   31116     +70
applet_names                                        2560    2564      +4
applet_main                                         1476    1480      +4
rewrite                                             1022    1013      -9
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 3/1 up/down: 442/-9)            Total: 433 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-25 01:58:00 +01:00
Denys Vlasenko
49ecee098d tls: add 2nd cipher_id, TLS_RSA_WITH_AES_128_CBC_SHA, so far it doesn't work 
Good news that TLS_RSA_WITH_AES_256_CBC_SHA256 still works with new code ;)

This change adds inevitable extension to have different sized hashes and AES key sizes.
In libbb, md5_end() and shaX_end() are extended to return result size instead of void -
this helps *a lot* in tls (the cost is ~5 bytes per _end() function).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-24 16:00:54 +01:00
Denys Vlasenko
16e7f697f8 libbb: eliminate redundant variable in sha_crypt 
function                                             old     new   delta
sha_crypt                                           1136    1130      -6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-15 20:59:32 +01:00
Denys Vlasenko
b8935d00b0 sha512: use larger constant table only if sha512 is in fact selected 
function                                             old     new   delta
sha_K                                                640     256    -384

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-15 20:16:27 +01:00
Denys Vlasenko
01ccdd1d3c libbb: consolidate the code to set termios unbuffered mode 
function                                             old     new   delta
set_termios_to_raw                                     -     116    +116
count_lines                                           72      74      +2
powertop_main                                       1458    1430     -28
top_main                                             943     914     -29
more_main                                            759     714     -45
fsck_minix_main                                     2969    2921     -48
conspy_main                                         1197    1135     -62
rawmode                                               99      36     -63
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/6 up/down: 118/-275)         Total: -157 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-11 16:17:59 +01:00