shellcheck: disable "unreachable command" check [SC2317]

This new check in 0.9.0 appears to have some issues with various forms
of "early return", like trap, exit and return. This is tripping up (at
least):

  cmd/zed/zed.d/history_event-zfs-list-cacher.sh
  /etc/zfs/zfs-functions

Its not obvious what its complaining about or what the remedy is, so it
seems sensible to disable this check for now.

See also:

  https://www.shellcheck.net/wiki/SC2317
  https://github.com/koalaman/shellcheck/issues/2542
  https://github.com/koalaman/shellcheck/issues/2613

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #15089
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Rob N 2023-07-22 04:53:06 +10:00 committed by GitHub
parent 46adb2820a
commit 13ec73a028
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@ -4,6 +4,7 @@
# Not following: a was not specified as input (see shellcheck -x). [SC1091] # Not following: a was not specified as input (see shellcheck -x). [SC1091]
# Prefer putting braces around variable references even when not strictly required. [SC2250] # Prefer putting braces around variable references even when not strictly required. [SC2250]
# Consider invoking this command separately to avoid masking its return value (or use '|| true' to ignore). [SC2312] # Consider invoking this command separately to avoid masking its return value (or use '|| true' to ignore). [SC2312]
# Command appears to be unreachable. Check usage (or ignore if invoked indirectly). [SC2317]
# In POSIX sh, 'local' is undefined. [SC2039] # older ShellCheck versions # In POSIX sh, 'local' is undefined. [SC2039] # older ShellCheck versions
# In POSIX sh, 'local' is undefined. [SC3043] # newer ShellCheck versions # In POSIX sh, 'local' is undefined. [SC3043] # newer ShellCheck versions
@ -18,7 +19,7 @@ PHONY += shellcheck
_STGT = $(subst ^,/,$(subst shellcheck-here-,,$@)) _STGT = $(subst ^,/,$(subst shellcheck-here-,,$@))
shellcheck-here-%: shellcheck-here-%:
if HAVE_SHELLCHECK if HAVE_SHELLCHECK
shellcheck --format=gcc --enable=all --exclude=SC1090,SC1091,SC2039,SC2250,SC2312,SC3043 $$([ -n "$(SHELLCHECK_SHELL)" ] && echo "--shell=$(SHELLCHECK_SHELL)") "$$([ -e "$(_STGT)" ] || echo "$(srcdir)/")$(_STGT)" shellcheck --format=gcc --enable=all --exclude=SC1090,SC1091,SC2039,SC2250,SC2312,SC2317,SC3043 $$([ -n "$(SHELLCHECK_SHELL)" ] && echo "--shell=$(SHELLCHECK_SHELL)") "$$([ -e "$(_STGT)" ] || echo "$(srcdir)/")$(_STGT)"
else else
@echo "skipping shellcheck of" $(_STGT) "because shellcheck is not installed" @echo "skipping shellcheck of" $(_STGT) "because shellcheck is not installed"
endif endif