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62 Commits

Author SHA1 Message Date
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
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
4eed2c6c50 Update menuconfig items with approximate applet sizes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-18 22:01:24 +02:00
Denys Vlasenko
79e2598c48 su: expand help; simplify passing of -c CMD to run_shell() 
Also, added a comment about bug 9401 (TIOCSTI input injection).

function                                             old     new   delta
packed_usage                                       30909   30932     +23
su_main                                              470     487     +17
sulogin_main                                         260     258      -2
run_applet_and_exit                                  681     678      -3
run_shell                                            166     126     -40

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-11-03 22:13:08 +01:00
Denys Vlasenko
237bedd499 getopt32: add new syntax of 'o:+' and 'o:*' for -o NUM and -o LIST 
In many cases, this aqllows to drop use of opt_complementary.
Approximately -400 bytes:

function                                             old     new   delta
getopt32                                            1423    1502     +79
opt_string                                            17      18      +1
OPT_STR                                               24      25      +1
uniq_main                                            416     406     -10
timeout_main                                         279     269     -10
sulogin_main                                         270     260     -10
readprofile_main                                    1825    1815     -10
ps_main                                              543     533     -10
pidof_main                                           245     235     -10
pgrep_main                                           611     601     -10
od_main                                             2600    2590     -10
mkfs_minix_main                                     2684    2674     -10
mkfs_ext2_main                                      2603    2593     -10
microcom_main                                        712     702     -10
makemime_main                                        315     305     -10
ionice_main                                          282     272     -10
inetd_main                                          2074    2064     -10
ifplugd_main                                        1144    1134     -10
halt_main                                            353     343     -10
getopt_main                                          636     626     -10
fdisk_main                                          2854    2844     -10
env_main                                             206     196     -10
dmesg_main                                           319     309     -10
conspy_main                                         1214    1204     -10
awk_main                                             981     971     -10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/22 up/down: 81/-220)         Total: -139 bytes
   text	   data	    bss	    dec	    hex	filename
 919373	    906	  14060	 934339	  e41c3	busybox_old
 918969	    906	  14060	 933935	  e402f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-07-06 21:58:02 +02:00
Denys Vlasenko
2a17fbe88a sulogin: use bb_error_msg instead of bb_info_msg; better message 
Historic "System Maintenance Mode" message is a tiny bit cryptic.
Let's say explicitly what we are doing: we are giving user a shell
(presumably to do some maintenance in single-user mode).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-30 17:36:20 +02:00
Denys Vlasenko
32c08acba3 sulogin: remove suid paranoia code, explain why it's not necessary 
function                                             old     new   delta
sulogin_main                                         325     270     -55

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-30 17:27:32 +02:00
Denys Vlasenko
8ac6effb02 sulogin: Dorp incorrect comment about suid-ness 
Sulogin is not a suid app, should fail if run by non-root.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-03-30 16:50:19 +02:00
Denys Vlasenko
95dee81a46 loginutils/*: convert to new-style "one file" applets 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-19 01:20:36 +02:00
Denys Vlasenko
9c1c605b1a sulogin: use common password-checking routine. 
This needed some extensions correct_passwd() function,
which got renamed ask_and_check_password() to better describe what it does.

function                                             old     new   delta
ask_and_check_password_extended                        -     215    +215
ask_and_check_password                                 -      12     +12
vlock_main                                           394     397      +3
sulogin_main                                         494     326    -168
correct_password                                     207       -    -207
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 1/1 up/down: 230/-375)         Total: -145 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-11-19 13:09:06 +01:00
Jonathan Liu
b6dc13c2d3 sulogin: allow system maintenance login if root password is empty 
The current password checking is unable to distinguish between the user
entering an empty password or pressing Control-D. As a result, an empty
password always results in normal startup.

We modify bb_ask to return NULL if Control-D is pressed without entering
a password. The sulogin applet is then modified to only proceed to
normal startup if bb_ask returns NULL. This covers EOF with no password,
interrupt by timeout and ^C.

Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-05-21 17:01:55 +02:00
Denys Vlasenko
9cb1e2f86b sulogin: correct lying comment 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-05-21 16:47:36 +02:00
Denys Vlasenko
66426760be *: remove "Options:" string from help texts 
function                                             old     new   delta
packed_usage                                       28706   28623     -83

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-06-05 03:58:28 +02:00
Pere Orga
6a3e01d5a9 move help text from include/usage.src.h to debianutils/*.c e2fsprogs/*.c editors/*.c loginutils/*.c mailutils/*.c 
Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-04-03 01:33:55 +02:00
Denys Vlasenko
7d4e7a27af s/FAIL_DELAY/LOGIN_FAIL_DELAY/ 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-08 21:07:05 +01:00
Denys Vlasenko
0ef64bdb40 *: make GNU licensing statement forms more regular 
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-08-16 20:14:46 +02:00
Ladislav Michl
a73b87e934 *: s/"/bin/sh"/DEFAULT_SHELL, run_shell() API fix, remove unneeded strdup 
function                                             old     new   delta
run_shell                                            157     166      +9
su_main                                              477     470      -7
sulogin_main                                         515     503     -12

Signed-off-by: Ladislav Michl <Ladislav.Michl@seznam.cz>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-06-27 03:23:31 +02:00
Denys Vlasenko
c8e18ca12c remove now-unneeded memset 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-02-01 13:45:04 +01:00
Denis Vlasenko
5e34ff29bc *: mass renaming of USE_XXXX to IF_XXXX 
and SKIP_XXXX to IF_NOT_XXXX - the second one was especially
badly named. It was not skipping anything!
 2009-04-21 11:09:40 +00:00
Bernhard Reutner-Fischer
82b1429966 - add new applet mkpasswd(1) 
function                                             old     new   delta
bb_ask                                                 -     355    +355
mkpasswd_main                                          -     296    +296
.rodata                                           121746  121847    +101
packed_usage                                       24632   24689     +57
static.methods                                         -      21     +21
gmatch                                               229     248     +19
bb_ask_stdin                                           -      11     +11
applet_names                                        1949    1958      +9
applet_main                                         1172    1176      +4
sulogin_main                                         503     505      +2
applet_nameofs                                       586     588      +2
sha256_hash                                          329     327      -2
correct_password                                     208     206      -2
parse_command                                       1442    1439      -3
get_cred_or_die                                      145     141      -4
passwd_main                                         1054    1044     -10
bb_askpass                                           348       -    -348
------------------------------------------------------------------------------
(add/remove: 4/1 grow/shrink: 7/5 up/down: 877/-369)          Total: 508 bytes
 2008-12-03 18:48:39 +00:00
Denis Vlasenko
3fa36e2350 *: a bit of code shrink 
function                                             old     new   delta
stop_handler                                          41      38      -3
sulogin_main                                         508     504      -4
got_cont                                               4       -      -4
cont_handler                                          11       -     -11
startservice                                         309     297     -12
processorstart                                       423     409     -14
tcpudpsvd_main                                      1861    1843     -18
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/5 up/down: 0/-66)             Total: -66 bytes
 2008-11-09 00:15:11 +00:00
Denis Vlasenko
a60f84ebf0 *: rename ATTRIBUTE_XXX to just XXX. 2008-07-05 09:18:54 +00:00
Denis Vlasenko
fdddab0c61 make pw_encrypt() return malloc'ed string. 
text    data     bss     dec     hex filename
 759802     604    6684  767090   bb472 busybox_old
 759804     604    6676  767084   bb46c busybox_unstripped
 2008-06-12 16:56:52 +00:00
Denis Vlasenko
4ea83bf562 uclibc insists on having 70k static buffer for crypt. 
For bbox it's not acceptable. Roll our own des and md5 crypt
implementation. Against older uclibc:

   text    data     bss     dec     hex filename
 759945     604    6684  767233   bb501 busybox_old
 759766     604    6684  767054   bb44e busybox_unstripped

so, we still save on code size.
 2008-06-12 16:55:59 +00:00
Denis Vlasenko
1d42665b6b *: shrink: use Vladimir's "o+" specifier instead of xatou(opt_param) 
function                                             old     new   delta
getopt32                                            1370    1385     +15
sulogin_main                                         490     494      +4
realpath_main                                         84      86      +2
sleep_main                                            76      77      +1
mt_main                                              256     257      +1
printenv_main                                         75      74      -1
fdformat_main                                        546     545      -1
usleep_main                                           44      42      -2
setlogcons_main                                       77      75      -2
ed_main                                             2654    2649      -5
deallocvt_main                                        69      64      -5
addgroup_main                                        373     368      -5
mkfs_minix_main                                     2989    2982      -7
tail_main                                           1221    1213      -8
sv_main                                             1254    1241     -13
du_main                                              348     328     -20
tftp_main                                            325     302     -23
split_main                                           581     558     -23
nc_main                                             1000     977     -23
diff_main                                            891     868     -23
arping_main                                         1797    1770     -27
ls_main                                              893     847     -46
od_main                                             2797    2750     -47
readprofile_main                                    1944    1895     -49
tcpudpsvd_main                                      1973    1922     -51
udhcpc_main                                         2590    2513     -77
grep_main                                            824     722    -102
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/22 up/down: 23/-560)         Total: -537 bytes
   text    data     bss     dec     hex filename
 796973     658    7428  805059   c48c3 busybox_old
 796479     662    7420  804561   c46d1 busybox_unstripped
 2008-03-17 09:09:09 +00:00
Denis Vlasenko
68404f13d4 *: add -Wunused-parameter; fix resulting breakage 
function                                             old     new   delta
procps_scan                                         1265    1298     +33
aliascmd                                             278     283      +5
parse_file_cmd                                       116     120      +4
dname_enc                                            373     377      +4
setcmd                                                90      93      +3
execcmd                                               57      60      +3
count_lines                                           72      74      +2
process_command_subs                                 340     339      -1
test_main                                            409     407      -2
mknod_main                                           179     177      -2
handle_incoming_and_exit                            2653    2651      -2
argstr                                              1312    1310      -2
shiftcmd                                             131     128      -3
exitcmd                                               46      43      -3
dotcmd                                               297     294      -3
breakcmd                                              86      83      -3
evalpipe                                             353     349      -4
evalcommand                                         1180    1176      -4
evalcmd                                              109     105      -4
send_tree                                            374     369      -5
mkfifo_main                                           82      77      -5
evalsubshell                                         152     147      -5
typecmd                                               75      69      -6
letcmd                                                61      55      -6
add_cmd                                             1190    1183      -7
main                                                 891     883      -8
ash_main                                            1415    1407      -8
parse_stream                                        1377    1367     -10
alloc_procps_scan                                     55       -     -55
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148)          Total: -94 bytes
   text    data     bss     dec     hex filename
 797195     658    7428  805281   c49a1 busybox_old
 797101     658    7428  805187   c4943 busybox_unstripped
 2008-03-17 09:00:54 +00:00
Denis Vlasenko
c9ca0a3274 mount: recognize "dirsync" (closes bug 835) 
mount: sanitize environ if called by non-root
*: adjust for slightly different sanitize routine
 2008-02-18 11:08:33 +00:00
Bernhard Reutner-Fischer
f470196a41 - fix conflicting decls of syslog related facilitynames and prioritynames tables 2008-01-27 12:50:12 +00:00
Denis Vlasenko
5281630229 login: clear dangerous environment variables if started by non-root 2007-11-06 05:26:51 +00:00
Denis Vlasenko
15ca51e3e2 appletlib.c: make it actally follow _BB_SUID_ALWAYS rules 
adduser: implement -S and code shrink / fix uid selection
*: sanitize getspnam_r use

   text    data     bss     dec     hex filename
 777042     974    9676  787692   c04ec busybox_old
 776883     974    9676  787533   c044d busybox_unstripped
 2007-10-29 19:25:45 +00:00
Denis Vlasenko
e5387a0574 bb_askpass: handle Ctrl-C, restore termoios on Ctrl-C. 
sulogin: remove alarm handling, as it is redundant there.
code shrink. After all differences cancel out:

   text    data     bss     dec     hex filename
 777543    1000    9532  788075   c066b busybox_old
 777543    1000    9532  788075   c066b busybox_unstripped
 2007-10-20 19:20:22 +00:00
Denis Vlasenko
9b49a5ed85 add -fvisibility=hidden to CC flags, mark XXX_main functions 
EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
 2007-10-11 10:05:36 +00:00
Denis Vlasenko
a2f61012b6 setup_environment: code shrink 
run_shell: mark as NORETURN
setup_environment, run_shell: add usage comments
login: add FIXME :(

function                                             old     new   delta
UNSPEC_print                                          64      66      +2
sulogin_main                                         509     506      -3
mkfs_minix_main                                     3070    3067      -3
login_main                                          1615    1612      -3
su_main                                              461     448     -13
setup_environment                                    261     206     -55
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/5 up/down: 2/-77)             Total: -75 bytes
   text    data     bss     dec     hex filename
 772578    1051   10724  784353   bf7e1 busybox_old
 772502    1051   10724  784277   bf795 busybox_unstripped
 2007-09-10 13:15:28 +00:00
Denis Vlasenko
fe7cd642b0 don't pass argc in getopt32, it's superfluous 
(add/remove: 0/0 grow/shrink: 12/131 up/down: 91/-727) Total: -636 bytes
   text    data     bss     dec     hex filename
 773469    1058   11092  785619   bfcd3 busybox_old
 772644    1058   11092  784794   bf99a busybox_unstripped
 2007-08-18 15:32:12 +00:00
Denis Vlasenko
6ca409e0e4 trylink: produce even more info about final link stage 
trylink: explain how to modify link and drastically decrease amount
  of padding (unfortunately, needs hand editing ATM).
*: add ALIGN1 / ALIGN2 to global strings and arrays of bytes and shorts

size saving: 0.5k
 2007-08-12 20:58:27 +00:00
Denis Vlasenko
b6adbf1be2 usage.c: remove reference to busybox.h 
*: s/include "busybox.h"/include "libbb.h"
 2007-05-26 19:00:18 +00:00
Denis Vlasenko
5df955fce2 Do not fail password check if shadow password does not exist - 
fall back to ordinary one

Reduced usage of functions returning datain static buffers.
(mostly passwd/group/shadow related):

function                                             old     new   delta
correct_password                                     143     193     +50
sulogin_main                                         490     533     +43
adduser_main                                         732     774     +42
passwd_main                                         1875    1915     +40
addgroup_main                                        330     365     +35
bb_internal_getspnam                                  38       -     -38
bb_internal_fgetpwent                                 38       -     -38
bb_internal_fgetgrent                                 38       -     -38
static.resultbuf                                     168      88     -80
static.buffer                                       1872    1104    -768
------------------------------------------------------------------------------
(add/remove: 0/3 grow/shrink: 5/2 up/down: 210/-962)         Total: -752 bytes
 2007-03-13 13:01:14 +00:00
Denis Vlasenko
06af216528 suppress warnings about easch <applet>_main() having 
no preceding prototype
 2007-02-03 17:28:39 +00:00
Denis Vlasenko
b5a122b6f9 fix for uclibc-without-shadow.h compilation 2006-12-30 14:46:51 +00:00
Denis Vlasenko
7fa0fcafca fix build without shadow support 2006-12-28 21:33:30 +00:00
Denis Vlasenko
c345d8e945 sulogin: add support for $SUSHELL & $sushell 2006-10-14 11:47:02 +00:00
Denis Vlasenko
1385899416 attempt to regularize atoi mess. 2006-10-08 12:49:22 +00:00
Denis Vlasenko
8f8f268cfd bb_applet_name -> applet_name 2006-10-03 21:00:43 +00:00
Denis Vlasenko
67b23e6043 getopt_ulflags -> getopt32. 
It is impossible to formulate sane ABI based on
size of ulong because it can be 32-bit or 64-bit.
Basically it means that you cannot portably use
more that 32 option chars in one call anyway...
Make it explicit.
 2006-10-03 21:00:06 +00:00
Denis Vlasenko
9213a9e0f2 whitespace cleanup 2006-09-17 16:28:10 +00:00
Rob Landley
69674941dd Error reporting fix for sulogin, plus remove help entries for options we never 
implemented.  (Plus a bit more of bbsh leaking in from my tree, but it
shouldn't hurt anything and I'm lazy...)
 2006-09-11 00:34:01 +00:00
Denis Vlasenko
9852d5a1e6 sulogin: minor cleanup. 2006-09-09 14:00:58 +00:00
Rob Landley
dd93abeaff Shrinkage/cleanup from Tito. 2006-09-08 17:22:05 +00:00
Denis Vlasenko
a9801658ee getty, sulogin: convert to using bb_msg for syslog output 2006-09-07 16:20:03 +00:00
Denis Vlasenko
6d655be5df removed a lot of trailing \n in bb_msg() calls. It is added 
automatically by function itself.
 2006-09-06 19:02:46 +00:00