Age | Commit message (Collapse) | Author |
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Upsteam commit:
Date: Mon, 17 May 2021 15:19:23 +0800
eval: Do not cache value of eflag in evaltree
Patrick Brünn <P.Bruenn@beckhoff.com> wrote:
> Since we are migrating to Debian bullseye, we discovered a new behavior
> with our scripts, which look like this:
>>cleanup() {
>> set +e
>> rmdir ""
>>}
>>set -eu
>>trap 'cleanup' EXIT INT TERM
>>echo 'Hello world!'
>
> With old dash v0.5.10.2 this script would return 0 as we expected it.
> But since commit 62cf6955f8abe875752d7163f6f3adbc7e49ebae it returns
> the last exit code of our cleanup function.
...
Thanks for the report. This is actually a fairly old bug with
set -e that's just been exposed by the exit status change. What's
really happening is that cleanup itself is triggering a set -e
exit incorrectly because evaltree cached the value of eflag prior
to the function call.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Upstream commit:
Date: Thu, 4 Jun 2020 21:53:55 +1000
eval: Check nflag in evaltree instead of cmdloop
This patch moves the nflag check from cmdloop into evaltree. This
is so that nflag will be in force even if we enter the shell via a
path other than cmdloop, e.g., through sh -c.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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While at it, stop incrementing LINENO inside traps
function old new delta
evaltree 567 762 +195
evalfun 268 348 +80
trapcmd 286 333 +47
dotrap 129 157 +28
exitshell 120 139 +19
readtoken1 3096 3110 +14
nlprompt 25 39 +14
nlnoprompt 19 33 +14
.rodata 104245 104255 +10
forkchild 610 617 +7
optletters_optnames 64 68 +4
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(add/remove: 0/0 grow/shrink: 11/0 up/down: 432/0) Total: 432 bytes
Signed-off-by: Roberto A. Foglietta <roberto.foglietta@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Stacy Harper reports that this script:
test() { . /tmp/bb_test; }
echo "export TEST=foo" >/tmp/bb_test
test 2>/dev/null
echo "$TEST"
correctly prints 'foo' in BusyBox 1.33 but hangs in 1.34.
Bisection suggested the problem was caused by commit a1b0d3856 (ash: add
process substitution in bash-compatibility mode). Removing the call to
unwindredir() in cmdloop() introduced in that commit makes the script
work again.
Additionally, these examples of process substitution:
while true; do cat <(echo hi); done
f() { while true; do cat <(echo hi); done }
f
result in running out of file descriptors. This is a regression from
v5 of the process substitution patch caused by changes to evalcommand()
not being transferred to v6.
function old new delta
static.pushredir - 99 +99
evalcommand 1729 1750 +21
exitreset 69 86 +17
cmdloop 372 365 -7
unwindredir 28 - -28
pushredir 112 - -112
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(add/remove: 1/2 grow/shrink: 2/1 up/down: 137/-147) Total: -10 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
expand_one_var 2507 2502 -5
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
expand_one_var 2353 2507 +154
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
parse_dollar_squote - 441 +441
encode_then_expand_vararg 359 380 +21
parse_stream 2252 2271 +19
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(add/remove: 1/0 grow/shrink: 2/0 up/down: 481/0) Total: 481 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
subevalvar 1447 1457 +10
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
subevalvar 1353 1447 +94
.rodata 104179 104184 +5
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 99/0) Total: 99 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Let's adopt Herbert Xu's patch, not waiting for it to reach dash git:
hush already has a similar fix.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
change_attributes 326 416 +90
list_attributes 222 248 +26
close_silently 22 - -22
.rodata 103722 103692 -30
fgetsetversion 74 - -74
fgetsetprojid 107 - -107
fgetsetflags 148 - -148
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(add/remove: 0/4 grow/shrink: 2/1 up/down: 116/-381) Total: -265 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Entering "${1a}" into interactive shell was making it exit.
function old new delta
parse_dollar 824 958 +134
i_getch_and_eat_bkslash_nl - 44 +44
parse_expr 917 938 +21
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(add/remove: 1/0 grow/shrink: 2/0 up/down: 199/0) Total: 199 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
done_pipe 213 231 +18
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
parse_stream 2238 2252 +14
encode_string 243 256 +13
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 27/0) Total: 27 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
packed_usage 33552 33541 -11
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
packed_usage 33589 33552 -37
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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On Sat, Feb 9, 2019 Cristian Ionescu-Idbohrn wrote:
> In my case (at work), I have to watch and prevent people from doing
> unportable things. For me, that's a burden.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Process substitution is a Korn shell feature that's also available
in bash and some other shells. This patch implements process
substitution in ash when ASH_BASH_COMPAT is enabled.
function old new delta
argstr 1386 1522 +136
strtodest - 52 +52
readtoken1 3346 3392 +46
.rodata 183206 183250 +44
unwindredir - 28 +28
cmdloop 365 372 +7
static.spclchars 10 12 +2
cmdputs 380 367 -13
exitreset 86 69 -17
evalcommand 1754 1737 -17
varvalue 675 634 -41
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(add/remove: 2/0 grow/shrink: 5/4 up/down: 315/-88) Total: 227 bytes
text data bss dec hex filename
953967 4219 1904 960090 ea65a busybox_old
954192 4219 1904 960315 ea73b busybox_unstripped
v2: Replace array of file descriptors with a linked list.
Include tests that were unaccountably omitted from v1.
v3: Update linked list code to the intended version.
v4: Change order of conditional code in cmdputs().
v5: Use existing popredir() mechanism to manage file descriptors.
v6: Rebase to latest version of BusyBox ash. Reduce code churn.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The original commit 3bef5d89b0 introduced an additional check
for an unset `opt_d` before doing word splitting. I'm unsure
why it's there in the first place, but the commit message also
describes a different behaviour than what -d actually does in
bash, while the code mostly does the right thing.
`opt_d` sets the line delimiter for read to stop reading and
should not affect word splitting.
Testcase:
$ echo qwe rty | { read -d Z a b; echo a:$a b:$b; }
a:qwe b:rty
function old new delta
shell_builtin_read 1314 1304 -10
Signed-off-by: Eicke Herbertz <wolletd@posteo.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
fgetc_interactive 227 244 +17
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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"In function 'sprint_status48':
error: format not a string literal and no format arguments"
function old new delta
sprint_status48 160 158 -2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
fputs_stdout - 12 +12
zxc_vm_process 7237 7230 -7
yes_main 85 78 -7
write_block 380 373 -7
wrapf 305 298 -7
strings_main 437 430 -7
show_bridge 353 346 -7
rev_main 384 377 -7
put_prompt_custom 58 51 -7
put_cur_glyph_and_inc_cursor 168 161 -7
print_numbered_lines 152 145 -7
print_named_ascii 130 123 -7
print_name 135 128 -7
print_login_issue 386 379 -7
print_ascii 208 201 -7
powertop_main 1249 1242 -7
od_main 1789 1782 -7
logread_main 518 511 -7
head_main 804 797 -7
display_process_list 1319 1312 -7
cut_main 1002 995 -7
bb_dump_dump 1550 1543 -7
bb_ask_noecho 393 386 -7
baseNUM_main 702 695 -7
expand_main 755 745 -10
dumpleases_main 497 487 -10
write1 12 - -12
putcsi 37 23 -14
print_login_prompt 55 41 -14
paste_main 525 511 -14
cat_main 440 426 -14
print_it 245 230 -15
print_addrinfo 1188 1171 -17
print_rule 770 750 -20
print_linkinfo 842 822 -20
httpd_main 791 771 -20
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(add/remove: 1/1 grow/shrink: 0/34 up/down: 12/-341) Total: -329 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
subevalvar 1349 1353 +4
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
packed_usage 33504 33499 -5
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
hush_main 1071 1066 -5
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(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-5) Total: -5 bytes
text data bss dec hex filename
1020110 559 5020 1025689 fa699 busybox_old
1020037 559 5020 1025616 fa650 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
ash_main 1218 1202 -16
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Otherwise if $HISTFILE is unset or reassigned, bad things can happen.
function old new delta
ash_main 1210 1218 +8
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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shells
function old new delta
xgettimeofday - 11 +11
get_local_var_value 280 281 +1
svlogd_main 1323 1322 -1
change_epoch 67 66 -1
timestamp_and_log 461 458 -3
hwclock_main 301 298 -3
fmt_time_bernstein_25 135 132 -3
step_time 331 326 -5
script_main 1207 1202 -5
machtime 34 28 -6
curtime 61 54 -7
ts_main 423 415 -8
nmeter_main 761 751 -10
gettime1900d 67 46 -21
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(add/remove: 1/0 grow/shrink: 1/12 up/down: 12/-73) Total: -61 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
fgetc_interactive 261 258 -3
pseudo_exec_argv 406 399 -7
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
ash_main 1203 1210 +7
raise_exception 39 26 -13
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 7/-13) Total: -6 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
refill_HFILE_and_getc 88 170 +82
fgetc_interactive 226 250 +24
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 106/0) Total: 106 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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It made ^C break out of the entire shell, if we aren't in PS2 mode.
Need a better idea.
function old new delta
expand_one_var 2344 2353 +9
syntax_error_unterm_ch 21 29 +8
parse_dollar 817 824 +7
parse_stream 2251 2238 -13
fgetc_interactive 249 227 -22
syntax_error_unterm_str 26 - -26
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(add/remove: 0/1 grow/shrink: 3/2 up/down: 24/-61) Total: -37 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
expand_one_var 2344 2353 +9
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
wait_for_child_or_signal 213 214 +1
refill_HFILE_and_getc 89 88 -1
getstatus 97 96 -1
builtin_wait 339 337 -2
checkjobs 187 183 -4
process_wait_result 450 444 -6
waitcmd 290 281 -9
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(add/remove: 0/0 grow/shrink: 1/6 up/down: 1/-23) Total: -22 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
xc_read_line 324 353 +29
free_line_input_t 34 39 +5
xc_vm_init 656 640 -16
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(add/remove: 0/0 grow/shrink: 2/1 up/down: 34/-16) Total: 18 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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