Denys Vlasenko [Mon, 7 Aug 2017 18:34:26 +0000 (20:34 +0200)]
dnsdomainname,hostname: make NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 17:24:57 +0000 (19:24 +0200)]
noexec: consolidate code
function old new delta
run_noexec_applet_and_exit - 61 +61
find_applet_by_name 128 124 -4
run_applet_no_and_exit 441 434 -7
tryexec 169 152 -17
pseudo_exec_argv 338 321 -17
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/6 up/down: 61/-48) Total: 13 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 16:59:35 +0000 (18:59 +0200)]
noexec: do GETOPT_RESET() before entering APPLET_main()
hush -c 'yes | head -1' was not happy.
function old new delta
tryexec 159 169 +10
pseudo_exec_argv 328 338 +10
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 16:45:33 +0000 (18:45 +0200)]
noexec: set comm field for noexecs
function old new delta
set_task_comm - 18 +18
tryexec 152 159 +7
pseudo_exec_argv 321 328 +7
main 106 97 -9
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/2 up/down: 34/-13) Total: 23 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 16:18:09 +0000 (18:18 +0200)]
free,stat: make NOEXEC
pkill/pgrep/pidof uncovered another quirk: what about noexec's _process names_?
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 15:36:41 +0000 (17:36 +0200)]
setconsole: much better help text
Was:
Usage: setconsole [-r] [DEVICE]
Redirect system console output to DEVICE (default: /dev/tty)
-r Reset output to /dev/console
Now:
Usage: setconsole [-r] [DEVICE]
Make writes to /dev/console appear on DEVICE (default: /dev/tty).
Does not redirect kernel log output or reads from /dev/console.
-r Reset: writes to /dev/console go to kernel log tty(s)
function old new delta
packed_usage 31766 31777 +11
setconsole_main 84 78 -6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 14:47:34 +0000 (16:47 +0200)]
users,w,who,uptime,renice: make NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 14:00:25 +0000 (16:00 +0200)]
ubi tools: ubiupdatevol supports "-" input and actually respects -s SIZE
Decided to not make any flash applets NOEXEC.
Minor robustifications here and there. Better error messages. Save on strings:
function old new delta
ubi_tools_main 1235 1288 +53
ubi_get_volid_by_name 125 133 +8
ubirename_main 198 204 +6
get_num_from_file 90 94 +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 71/0) Total: 71 bytes
text data bss dec hex filename
915696 485 6880 923061 e15b5 busybox_old
915670 485 6880 923035 e159b busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 01:24:29 +0000 (03:24 +0200)]
ubiupdatevol: fix bug with -sSIZE: was ignoring IMAGE_FILE
While at it, fix help text
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 00:55:33 +0000 (02:55 +0200)]
ubi_tools: a bit smaller applet resolution code
function old new delta
ubi_tools_main 1241 1235 -6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 00:21:34 +0000 (02:21 +0200)]
script: -f means "flush", not "fsync"
function old new delta
packed_usage 31765 31768 +3
script_main 1102 1082 -20
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 7 Aug 2017 00:12:36 +0000 (02:12 +0200)]
script: make -t[FILE] compatible with util-linux
function old new delta
script_main 1056 1102 +46
packed_usage 31736 31765 +29
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 75/0) Total: 75 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 23:53:17 +0000 (01:53 +0200)]
script: make -t independent of scriptreplay
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 22:28:15 +0000 (00:28 +0200)]
add/remove-shell,add/deluser,add/delgroup: make them NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 19:53:39 +0000 (21:53 +0200)]
nbd-client: make it NOEXEC, stop using argc
function old new delta
nbdclient_main 484 492 +8
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 19:47:07 +0000 (21:47 +0200)]
makedevs: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 19:29:51 +0000 (21:29 +0200)]
svc: remove superfluout INIT_G()
function old new delta
sv 1297 1296 -1
svc_main 162 145 -17
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 19:23:03 +0000 (21:23 +0200)]
sv,svc: fix NOEXEC fallout
function old new delta
svc_main 145 162 +17
sv 1280 1297 +17
status 139 133 -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 34/-6) Total: 28 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 18:55:56 +0000 (20:55 +0200)]
stty: fix bb_common_bufsiz1 use in NOEXEC
function old new delta
stty_main 1211 1221 +10
do_display 379 370 -9
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 18:39:27 +0000 (20:39 +0200)]
readprofile: do not close/free just before exiting
function old new delta
readprofile_main 1784 1762 -22
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 18:20:47 +0000 (20:20 +0200)]
blkdiscard: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 18:16:28 +0000 (20:16 +0200)]
blkid: make it NOEXEC, make FEATURE_BLKID_TYPE=y default
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 18:14:02 +0000 (20:14 +0200)]
brctl: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 18:06:19 +0000 (20:06 +0200)]
ash: do not set a signal to SIG_DFL if it already is
function old new delta
setsignal 312 338 +26
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 18:00:21 +0000 (20:00 +0200)]
adjtimex: make it NOFORK
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 17:46:21 +0000 (19:46 +0200)]
adjtimex: zero-fill whole structure, to be on the safe side
function old new delta
adjtimex_main 395 406 +11
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 17:08:46 +0000 (19:08 +0200)]
raidautorun: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 17:05:45 +0000 (19:05 +0200)]
loadfont,setfont: make them NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 16:56:25 +0000 (18:56 +0200)]
setconsole: make it NOEXEC
BTW, I failed to make it do what it meant to do.
ioctl appears to succeed, but kernel's output is not coming
to the specified console (tried on VT consoles too).
OTOH, setlogcons does work...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 16:54:16 +0000 (18:54 +0200)]
setconsole: since SUSE version has no -r, nuke our --reset longopt
Why we even bother inventing incompatible longopts?!
function old new delta
packed_usage 31734 31738 +4
static.setconsole_longopts 9 - -9
setconsole_main 94 84 -10
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/1 up/down: 4/-19) Total: -15 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 16:29:25 +0000 (18:29 +0200)]
setkeycodes: make it NOEXEC, better --help text
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 16:17:58 +0000 (18:17 +0200)]
setlogcons: make it NOEXEC, better --help text
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 16:06:46 +0000 (18:06 +0200)]
setserial: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 15:59:37 +0000 (17:59 +0200)]
setserial: code shrink, better --help text
function old new delta
packed_usage 31747 31749 +2
setserial_main 1152 1132 -20
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 15:14:09 +0000 (17:14 +0200)]
slattach: code shrink, better --help text
function old new delta
tcsetattr_serial_or_warn - 34 +34
static.int_N_SLIP - 4 +4
restore_state_and_exit 123 117 -6
packed_usage 31774 31747 -27
set_termios_state_or_warn 42 - -42
slattach_main 673 624 -49
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 0/3 up/down: 38/-124) Total: -86 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 12:15:24 +0000 (14:15 +0200)]
nameif: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 12:03:27 +0000 (14:03 +0200)]
Tweak outdated documentation and comments
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 10:28:00 +0000 (12:28 +0200)]
tunctl: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 10:23:04 +0000 (12:23 +0200)]
kbd_more: make it NOEXEC, remove redundant opt clearing
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 6 Aug 2017 10:17:46 +0000 (12:17 +0200)]
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>
Denys Vlasenko [Sun, 6 Aug 2017 09:58:46 +0000 (11:58 +0200)]
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>
Denys Vlasenko [Sat, 5 Aug 2017 21:28:19 +0000 (23:28 +0200)]
lspci,lsscsi,lsusb: make them NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 5 Aug 2017 21:21:02 +0000 (23:21 +0200)]
umount: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 5 Aug 2017 20:25:00 +0000 (22:25 +0200)]
pstree: make it NOEXEC
While at it, documet why ps can't be NOEXEC.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 5 Aug 2017 18:38:04 +0000 (20:38 +0200)]
chattr,lsattr,tune2fs: make them NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 5 Aug 2017 18:33:48 +0000 (20:33 +0200)]
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>
Denys Vlasenko [Sat, 5 Aug 2017 16:23:10 +0000 (18:23 +0200)]
sysctl: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 5 Aug 2017 16:20:34 +0000 (18:20 +0200)]
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>
Denys Vlasenko [Sat, 5 Aug 2017 15:50:35 +0000 (17:50 +0200)]
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>
Denys Vlasenko [Sat, 5 Aug 2017 11:45:22 +0000 (13:45 +0200)]
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>
Denys Vlasenko [Sat, 5 Aug 2017 00:08:23 +0000 (02:08 +0200)]
cryptpw, mkpasswd: make them NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 5 Aug 2017 00:02:31 +0000 (02:02 +0200)]
chvt, deallocvt, dumpkmap, fgconsole, loadkmap: make them NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 23:51:12 +0000 (01:51 +0200)]
pivot_root: make it NOFORK
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 23:46:39 +0000 (01:46 +0200)]
partprobe: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 23:42:08 +0000 (01:42 +0200)]
sv, svc: make them NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 23:38:55 +0000 (01:38 +0200)]
svc: fix a case where with more than option, getopt() state is not reset
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 23:29:12 +0000 (01:29 +0200)]
blockdev, fsfreeze, fstrim, mountpoint: make NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 21:04:17 +0000 (23:04 +0200)]
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>
Denys Vlasenko [Fri, 4 Aug 2017 18:07:19 +0000 (20:07 +0200)]
stty: make in NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 17:55:01 +0000 (19:55 +0200)]
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>
Denys Vlasenko [Fri, 4 Aug 2017 17:16:01 +0000 (19:16 +0200)]
mesg: make in NOFORK
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 16:36:55 +0000 (18:36 +0200)]
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>
Denys Vlasenko [Fri, 4 Aug 2017 15:59:46 +0000 (17:59 +0200)]
runlevel: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 15:39:05 +0000 (17:39 +0200)]
mktemp: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 15:36:16 +0000 (17:36 +0200)]
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>
Denys Vlasenko [Fri, 4 Aug 2017 14:46:17 +0000 (16:46 +0200)]
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>
Denys Vlasenko [Fri, 4 Aug 2017 14:23:42 +0000 (16:23 +0200)]
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>
Denys Vlasenko [Fri, 4 Aug 2017 14:01:39 +0000 (16:01 +0200)]
tweak NOFORK_NOEXEC.lst
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 13:24:49 +0000 (15:24 +0200)]
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>
Johannes Schindelin [Fri, 4 Aug 2017 10:16:46 +0000 (12:16 +0200)]
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>
Denys Vlasenko [Fri, 4 Aug 2017 12:50:03 +0000 (14:50 +0200)]
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>
Denys Vlasenko [Fri, 4 Aug 2017 12:28:16 +0000 (14:28 +0200)]
sheel: improve comments on signal handling
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 00:56:39 +0000 (02:56 +0200)]
modutils: make them NOEXEC except depmod
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 4 Aug 2017 00:01:45 +0000 (02:01 +0200)]
microcom: require exactly one non-option
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 3 Aug 2017 17:56:29 +0000 (19:56 +0200)]
ash: add a fixme comment at run_nofork_applet
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 3 Aug 2017 17:52:47 +0000 (19:52 +0200)]
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>
Denys Vlasenko [Thu, 3 Aug 2017 17:30:21 +0000 (19:30 +0200)]
getopt: make it NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 3 Aug 2017 17:00:01 +0000 (19:00 +0200)]
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>
Denys Vlasenko [Thu, 3 Aug 2017 01:46:14 +0000 (03:46 +0200)]
config: FEDORA_COMPAT option (so far only tweaks uname)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 3 Aug 2017 01:29:32 +0000 (03:29 +0200)]
new NOFORKs: clear, nproc, tty, uname, arch, unlink, which
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 2 Aug 2017 17:44:05 +0000 (19:44 +0200)]
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>
Denys Vlasenko [Wed, 2 Aug 2017 15:27:28 +0000 (17:27 +0200)]
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>
Denys Vlasenko [Wed, 2 Aug 2017 14:52:12 +0000 (16:52 +0200)]
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>
Denys Vlasenko [Wed, 2 Aug 2017 14:37:39 +0000 (16:37 +0200)]
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
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 52/0) Total: 52 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 2 Aug 2017 12:26:33 +0000 (14:26 +0200)]
do not use `a' quoting style in comments
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 2 Aug 2017 12:12:48 +0000 (14:12 +0200)]
config: do not use `a' quoting in help texts
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 31 Jul 2017 17:43:47 +0000 (19:43 +0200)]
ash: align --login code with dash
Upstream commit:
Date: Sun, 13 Jul 2008 22:34:50 +0800
[OPTIONS] Added support for -l
This patch adds support for the -l option (login shell) as required
by the LSB.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
It's a bit bigger, but gets rid of one global variable
function old new delta
options 554 576 +22
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 31 Jul 2017 17:20:43 +0000 (19:20 +0200)]
test: fix 4-argument case
Upstream dash commit:
Date: Sun, 13 Jul 2008 19:20:10 +0800
Fixed 3,4-argument cases for test per POSIX
----- Forwarded message from Gerrit Pape <pape@smarden.org> -----
Subject: Bug#455828: dash: 4-argument test "test \( ! -e \)" yields an error
Date: Fri, 28 Dec 2007 08:53:29 +0000
From: Gerrit Pape <pape@smarden.org>
To: Vincent Lefevre <vincent@vinc17.org>, 455828@bugs.debian.org
On Thu, Dec 27, 2007 at 06:23:20PM +0100, Vincent Lefevre wrote:
> On 2007-12-27 16:00:06 +0000, Gerrit Pape wrote:
> > On Wed, Dec 12, 2007 at 02:18:47AM +0100, Vincent Lefevre wrote:
> > > According to POSIX[*], "test \( ! -e \)" is a 4-argument test and is
> > > here equivalent to "test ! -e". But dash (like ksh93 and bash) yields
> > > an error:
> > >
> > > $ test \( ! -e \) || echo $?
> > > test: 1: closing paren expected
> > > 2
> > > $ test ! -e || echo $?
> > > 1
> >
> > Hi Vincent,
> >
> > the -e switch to test takes an argument, a pathname.
>
> According to POSIX, in both above examples, "-e" is *not* a switch,
> just a string.
>
> test \( ! -e \)
>
> means: return true if the string "-e" is empty, otherwhise return false.
> The error in dash is that it incorrectly thinks that "-e" is a switch in
> this context.
I see, you're right. Thanks, Gerrit.
----- End forwarded message -----
This patch hard-codes the 3,4-argument cases in the way required by
POSIX.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
function old new delta
test_main 370 421 +51
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 31 Jul 2017 16:06:07 +0000 (18:06 +0200)]
hush: remove redundant "G_flag_return_in_progress = -1"
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 31 Jul 2017 16:02:28 +0000 (18:02 +0200)]
hush: fix "true | func_with_return" not allowing return.
function old new delta
pseudo_exec_argv 305 312 +7
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 31 Jul 2017 12:32:18 +0000 (14:32 +0200)]
ash: fix display of ">&-" redirect in job strings
function old new delta
cmdtxt 558 569 +11
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 31 Jul 2017 03:27:09 +0000 (05:27 +0200)]
hush: functions have priority over builtins (!)
function old new delta
pseudo_exec_argv 291 305 +14
run_pipe 1560 1555 -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 14/-5) Total: 9 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 31 Jul 2017 02:54:53 +0000 (04:54 +0200)]
hush: if STANDALONE, close interactive fd for NOEXECed children
function old new delta
pseudo_exec_argv 291 305 +14
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 31 Jul 2017 02:32:06 +0000 (04:32 +0200)]
ash,hush: ">&10" redirects to script/tty fds should not work
The fact that shell has open fds to tty and/or scripts should be
unobservable, if possible. In particular, if redirect tries to dup
one of them via ">&script_fd", it's better to pretend that script_fd
is closed, and thus redirect fails with EBADF.
Fixes these two testcase failures:
ash-redir/redir_to_bad_fd.tests
hush-redir/redir_to_bad_fd3.tests
function old new delta
redirect 1018 1129 +111
setup_redirects 250 359 +109
readtoken1 2651 2655 +4
cmdloop 185 187 +2
changepath 194 195 +1
save_fd_on_redirect 203 194 -9
evaltree 501 484 -17
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/2 up/down: 227/-26) Total: 201 bytes
text data bss dec hex filename
914553 485 6848 921886 e111e busybox_old
914754 485 6848 922087 e11e7 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 31 Jul 2017 02:09:19 +0000 (04:09 +0200)]
ash: significant overhaul of redirect saving logic
New code is similar to what hush is doing.
Make CLOSED to -1: same as dash.
popredir() loses "restore" parameter: same as dash.
COPYFD_RESTORE bit is no longer necessary.
This change fixes this interactive bug:
$ ls -l /proc/$$/fd 10>&-
ash: can't set tty process group: Bad file descriptor
ash: can't set tty process group: Bad file descriptor
[1]+ Done(2) ls -l /proc/${\$}/fd 10>&
4294967295
function old new delta
unwindredir 29 27 -2
tryexec 154 152 -2
evaltree 503 501 -2
evalcommand 1369 1367 -2
cmdloop 187 185 -2
redirect 1029 1018 -11
popredir 153 123 -30
need_to_remember 36 - -36
is_hidden_fd 68 - -68
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/7 up/down: 0/-155) Total: -155 bytes
text data bss dec hex filename
914572 485 6848 921905 e1131 busybox_old
914553 485 6848 921886 e111e busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 30 Jul 2017 21:34:04 +0000 (23:34 +0200)]
hush: massage redirect code to be slightly more like ash
function old new delta
save_fd_on_redirect - 203 +203
xdup_CLOEXEC_and_close - 75 +75
setup_redirects 245 250 +5
xdup_and_close 72 - -72
save_fds_on_redirect 221 - -221
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 1/0 up/down: 283/-293) Total: -10 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 30 Jul 2017 14:51:05 +0000 (16:51 +0200)]
ash: remove REDIR_SAVEFD2
function old new delta
evalcommand 1364 1369 +5
redirect 1055 1014 -41
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 5/-41) Total: -36 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 29 Jul 2017 20:58:44 +0000 (22:58 +0200)]
ash: if !ENABLE_ASH_EXPAND_PRMT, disable PSSYNTAX code
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 29 Jul 2017 20:51:52 +0000 (22:51 +0200)]
ash: [REDIR] Fix popredir on abnormal exit from built-in
Upstream commit:
Date: Thu, 27 May 2010 15:03:46 +0800
[REDIR] Fix popredir on abnormal exit from built-in
Just like the poplocalvar problem recently fixed, redirections
can also be leaked in case of an abnormal exit. This patch fixes
it using the same method as poplocalvar, by storing the previous
redirection state and restoring to that point.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 29 Jul 2017 19:12:29 +0000 (21:12 +0200)]
ash: [PARSER] Add FAKEEOFMARK for expandstr
Upstream commit:
Date: Thu, 27 Dec 2007 13:54:16 +1100
[PARSER] Add FAKEEOFMARK for expandstr
Previously expandstr used the string "" to indicate that it needs to be
treated just like a here-doc except that there is no terminator. However,
the string "" is in fact a valid here-doc terminator so now that we deal
with it correctly expandstr no longer works in the presence of new-lines
in the prompt.
This patch introduces the FAKEEOFMARK macro which does not equal any
real EOF marker but is distinct from the NULL pointer which is used to
indicate non-here-doc contexts.
Thanks to Markus Triska for reporting this regression.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Unfortunately, I did not find the failing example for this old fix.
I also tweaked the code which was added by this commit:
"
Date: Mon Sep 24 18:30:02 2007 +0000
ash: fix prompt expansion (Natanael Copa <natanael.copa@gmail.com>)
"
since other parts of code do expect expandstr() to use DQSYNTAX, not PSSYNTAX.
function old new delta
parse_stream 2609 2634 +25
setprompt_if 128 133 +5
read_profile 32 37 +5
evalcommand 1334 1339 +5
expandstr 122 120 -2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/1 up/down: 40/-2) Total: 38 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
projects / oweals / busybox.git / log