diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2017-07-06 18:37:30 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2017-07-06 18:37:30 +0200 |
| commit | b18b04c8a832148fb47aec20ce1e74267d2fb438 (patch) | |
| tree | 6c00fdb3493540284c39a032dde3fabec79e2df7 /shell/ash_test/ash-misc | |
| parent | cafb2d195d4d68e4e4c474453409a69643edf5aa (diff) | |
| download | busybox-w32-b18b04c8a832148fb47aec20ce1e74267d2fb438.tar.gz busybox-w32-b18b04c8a832148fb47aec20ce1e74267d2fb438.tar.bz2 busybox-w32-b18b04c8a832148fb47aec20ce1e74267d2fb438.zip | |
shell: remove duplicate sigint1.tests (another copies are in signals/)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell/ash_test/ash-misc')
| -rw-r--r-- | shell/ash_test/ash-misc/sigint1.right | 1 | ||||
| -rwxr-xr-x | shell/ash_test/ash-misc/sigint1.tests | 41 |
2 files changed, 0 insertions, 42 deletions
diff --git a/shell/ash_test/ash-misc/sigint1.right b/shell/ash_test/ash-misc/sigint1.right deleted file mode 100644 index a9094b056..000000000 --- a/shell/ash_test/ash-misc/sigint1.right +++ /dev/null | |||
| @@ -1 +0,0 @@ | |||
| 1 | Sending SIGINT to main shell PID | ||
diff --git a/shell/ash_test/ash-misc/sigint1.tests b/shell/ash_test/ash-misc/sigint1.tests deleted file mode 100755 index 3d483d32a..000000000 --- a/shell/ash_test/ash-misc/sigint1.tests +++ /dev/null | |||
| @@ -1,41 +0,0 @@ | |||
| 1 | # What should happen if non-interactive shell gets SIGINT? | ||
| 2 | |||
| 3 | (sleep 1; echo Sending SIGINT to main shell PID; exec kill -INT $$) & | ||
| 4 | |||
| 5 | # We create a child which exits with 0 even on SIGINT | ||
| 6 | # (The complex command is necessary only if SIGINT is generated by ^C, | ||
| 7 | # in this testcase even bare "sleep 2" would do because | ||
| 8 | # in the testcase we don't send SIGINT *to the child*...) | ||
| 9 | $THIS_SH -c 'trap "exit 0" SIGINT; sleep 2' | ||
| 10 | |||
| 11 | # In one second, we (main shell) get SIGINT here. | ||
| 12 | # The question is whether we should, or should not, exit. | ||
| 13 | |||
| 14 | # bash will not stop here. It will execute next command(s). | ||
| 15 | |||
| 16 | # The rationale for this is described here: | ||
| 17 | # http://www.cons.org/cracauer/sigint.html | ||
| 18 | # | ||
| 19 | # Basically, bash will not exit on SIGINT immediately if it waits | ||
| 20 | # for a child. It will wait for the child to exit. | ||
| 21 | # If child exits NOT by dying on SIGINT, then bash will not exit. | ||
| 22 | # | ||
| 23 | # The idea is that the following script: | ||
| 24 | # | emacs file.txt | ||
| 25 | # | more cmds | ||
| 26 | # User may use ^C to interrupt editor's ops like search. But then | ||
| 27 | # emacs exits normally. User expects that script doesn't stop. | ||
| 28 | # | ||
| 29 | # This is a nice idea, but detecting "did process really exit | ||
| 30 | # with SIGINT?" is racy. Consider: | ||
| 31 | # | bash -c 'while true; do /bin/true; done' | ||
| 32 | # When ^C is pressed while bash waits for /bin/true to exit, | ||
| 33 | # it may happen that /bin/true exits with exitcode 0 before | ||
| 34 | # ^C is delivered to it as SIGINT. bash will see SIGINT, then | ||
| 35 | # it will see that child exited with 0, and bash will NOT EXIT. | ||
| 36 | |||
| 37 | # Therefore we do not implement bash behavior. | ||
| 38 | # I'd say that emacs need to put itself into a separate pgrp | ||
| 39 | # to isolate shell from getting stray SIGINTs from ^C. | ||
| 40 | |||
| 41 | echo Next command after SIGINT was executed | ||