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| author | Michael Forney <forney@google.com> | 2018-02-07 09:41:17 +0300 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-03-25 20:01:18 +0300 |
| commit | 1fe7d2bb24d7db6175e0b0a31d8fe03dc6ffb16e (patch) | |
| tree | 1d1acfa6039c3f4a51ea7032656d09f58bf14654 /scripts/adjust_autoksyms.sh | |
| parent | ae0c553c24c009596c3a3e903433824fe050c547 (diff) | |
| download | linux-1fe7d2bb24d7db6175e0b0a31d8fe03dc6ffb16e.tar.xz | |
kbuild: Improve portability of some sed invocations
* Use BREs where EREs aren't necessary.
* Pass -E instead of -r to use EREs. This will be standardized in the
next POSIX revision[0]. GNU sed supports this since 4.2 (May 2009),
and busybox since 1.22.0 (Jan 2014).
* Use the [:space:] character class instead of ` \t` in bracket
expressions. In bracket expressions, POSIX says that <backslash> loses
its special meaning, so a conforming implementation cannot expand \t
to <tab>[1].
* In BREs, use interval expressions (\{n,m\}) instead of non-standard
features like \+ and \?.
* Use a loop instead of -s flag.
There are still plenty of other cases of non-standard sed invocations
(use of ERE features in BREs, in-place editing), but this fixes some
core ones.
[0] http://austingroupbugs.net/view.php?id=528
[1] http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_03_05
Signed-off-by: Michael Forney <forney@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/adjust_autoksyms.sh')
| -rwxr-xr-x | scripts/adjust_autoksyms.sh | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/scripts/adjust_autoksyms.sh b/scripts/adjust_autoksyms.sh index 513da1a4a2da..a162258ab606 100755 --- a/scripts/adjust_autoksyms.sh +++ b/scripts/adjust_autoksyms.sh @@ -60,7 +60,9 @@ cat > "$new_ksyms_file" << EOT EOT [ "$(ls -A "$MODVERDIR")" ] && -sed -ns -e '3{s/ /\n/g;/^$/!p;}' "$MODVERDIR"/*.mod | sort -u | +for mod in "$MODVERDIR"/*.mod; do + sed -n -e '3{s/ /\n/g;/^$/!p;}' "$mod" +done | sort -u | while read sym; do if [ -n "$CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX" ]; then sym="${sym#_}" |