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Author SHA1 Message Date
Denys Vlasenko
a759b22c29 nameif: make it NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-06 14:15:24 +02:00
Denys Vlasenko
fbecca1bed Tweak outdated documentation and comments 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-06 14:03:27 +02:00
Denys Vlasenko
9a58cc0f7f tunctl: make it NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-06 12:28:00 +02:00
Denys Vlasenko
ae17ba0924 kbd_more: make it NOEXEC, remove redundant opt clearing 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-06 12:23:04 +02:00
Denys Vlasenko
32b60cc0db kbd_mode: try harder to find console device if -C TTY is not given 
Was (under X):
	$ ./busybox_old kbd_mode
	kbd_mode: ioctl 0x4b44 failed: Inappropriate ioctl for device
Now:
	$ ./busybox kbd_mode
	The keyboard is in off mode

function                                             old     new   delta
kbd_mode_main                                        166     174      +8
packed_usage                                       31782   31764     -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 8/-18)             Total: -10 bytes
   text	   data	    bss	    dec	    hex	filename
 915757	    485	   6880	 923122	  e15f2	busybox_old
 915747	    485	   6880	 923112	  e15e8	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-06 12:17:46 +02:00
Denys Vlasenko
6517bbc76c kbd_mode: show "off" mode too 
function                                             old     new   delta
kbd_mode_main                                        156     166     +10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-06 11:58:46 +02:00
Denys Vlasenko
3239ab89c9 lspci,lsscsi,lsusb: make them NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 23:28:19 +02:00
Denys Vlasenko
83a6c8d58b umount: make it NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 23:21:02 +02:00
Denys Vlasenko
00c1811d87 pstree: make it NOEXEC 
While at it, documet why ps can't be NOEXEC.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 22:25:00 +02:00
Denys Vlasenko
99125c0495 chattr,lsattr,tune2fs: make them NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 20:38:04 +02:00
Denys Vlasenko
d3147cd5c3 chattr: fix option parsing to accept more cryptic option combos 
function                                             old     new   delta
chattr_main                                          286     289      +3
packed_usage                                       31793   31761     -32

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 20:33:48 +02:00
Denys Vlasenko
caf26b36f3 sysctl: make it NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 18:23:10 +02:00
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
feb79e8742 cryptpw, mkpasswd: make them NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 02:08:23 +02:00
Denys Vlasenko
ff53bee723 chvt, deallocvt, dumpkmap, fgconsole, loadkmap: make them NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 02:02:31 +02:00
Denys Vlasenko
fdb92359e4 pivot_root: make it NOFORK 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 01:51:12 +02:00
Denys Vlasenko
9c49d6e11b partprobe: make it NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 01:46:39 +02:00
Denys Vlasenko
a453ca576f sv, svc: make them NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 01:42:08 +02:00
Denys Vlasenko
754e9f96de svc: fix a case where with more than option, getopt() state is not reset 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 01:38:55 +02:00
Denys Vlasenko
9f59849daa blockdev, fsfreeze, fstrim, mountpoint: make NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-05 01:29:12 +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
692eeb81a4 stty: make in NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 20:07:19 +02:00
Denys Vlasenko
5c527dc57e make 17 state-changing execing applets (ex: "nice PROG ARGS") noexec 
The applets with "<applet> [opts] PROG ARGS" API very quickly exec
another program, noexec is okay for them:

 chpst/envdir/envuidgid/softlimit/setuidgid
 chroot
 chrt
 ionice
 nice
 nohup
 setarch/linux32/linux64
 taskset
 cttyhack

"reset" and "sulogin" applets don't have this form, but also exec
another program at once, thus made noexec too.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 19:55:01 +02:00
Denys Vlasenko
6514785f95 mesg: make in NOFORK 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 19:16:01 +02:00
Denys Vlasenko
947b2391c0 pmap: tweak help text, show usage if no params are given 
Noticed while auditing nofork/noexec status

function                                             old     new   delta
pmap_main                                             70      80     +10
packed_usage                                       31747   31744      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 18:37:34 +02:00
Denys Vlasenko
83d7785e41 runlevel: make it NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 17:59:46 +02:00
Denys Vlasenko
6bec24c4f5 mktemp: make it NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 17:39:05 +02:00
Denys Vlasenko
74c05f5b2c chat: trim help text 
Noticed while auditing nofork/noexec status

function                                             old     new   delta
packed_usage                                       31777   31747     -30

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 17:36:16 +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
7f9d62d7f5 tweak NOFORK_NOEXEC.lst 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 16:01:39 +02:00
Denys Vlasenko
f8cdc7a2bc ash: BASH_XTRACEFD bashism 
Based on patch by Johannes Schindelin <johannes.schindelin@gmx.de>

function                                             old     new   delta
evalcommand                                         1447    1500     +53

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 15:24:49 +02:00
Johannes Schindelin
7344755823 ash: remove no-longer-used variable 
As of 035486c75 (ash: significant overhaul of redirect saving logic,
2017-07-31), the sv_pos variable is no longer used (just assigned to,
with no further effect).

Let's just remove it.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 14:52:08 +02:00
Denys Vlasenko
d329e34c96 ash: INT_OFF/INT_ON around run_nofork_applet() 
function                                             old     new   delta
evalcommand                                         1441    1447      +6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 14:50:03 +02:00
Denys Vlasenko
49e6bf2db9 sheel: improve comments on signal handling 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 14:28:16 +02:00
Denys Vlasenko
3346b4afc5 modutils: make them NOEXEC except depmod 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 02:56:39 +02:00
Denys Vlasenko
4dc86699b5 microcom: require exactly one non-option 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 02:01:45 +02:00
Denys Vlasenko
cfd392bea9 ash: add a fixme comment at run_nofork_applet 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-03 19:56:29 +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
72d725d7cc getopt: make it NOEXEC 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-03 19:30:21 +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
663ae52676 config: FEDORA_COMPAT option (so far only tweaks uname) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-03 03:46:14 +02:00
Denys Vlasenko
819b47aa35 new NOFORKs: clear, nproc, tty, uname, arch, unlink, which 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-03 03:29:32 +02:00
Denys Vlasenko
39701204cf hush: do not accept "if() { echo; }" function def 
function                                             old     new   delta
parse_stream                                        2634    2692     +58
msg_and_die_if_script                                  -      21     +21
syntax_error_unexpected_ch                            41      46      +5
syntax_error_at                                       14      18      +4
die_if_script                                         31      28      -3
setup_redirects                                      319     308     -11
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/2 up/down: 88/-14)             Total: 74 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-02 19:46:14 +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
dd4b446f76 hush: make SIGINT handling visually less confusing 
$ echo $$
18448
$ echo $? <wait here, run "kill -INT 18448" in other shell><press enter>
   <=== NOTHING??
$

That empty line does not look right. After this patch:

$ echo $$
18448
$ echo $? <wait here, run "kill -INT 18448" in other shell><press enter>
^C
$

function                                             old     new   delta
fgetc_interactive                                    245     246      +1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-02 16:52:12 +02:00
Denys Vlasenko
7c40ddd950 NOFORK fixes 
"rm -i FILE" and "yes" can now be interrupted by ^C in hush.
This also now works:

$ usleep 19999999
^C
$ echo $?
130

function                                             old     new   delta
run_pipe                                            1668    1711     +43
pseudo_exec_argv                                     312     321      +9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 52/0)               Total: 52 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-02 16:37:39 +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