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Date: Thu, 18 Feb 2010 16:42:54 +0300
From: "Dmitry V. Levin" <ldv@altlinux.org>
To: Alexey Gladkov <legion@altlinux.org>
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Subject: [devel] A: trap shell builtin (was: [SCM] packages/make-initrd:
	heads/master)
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On Thu, Feb 18, 2010 at 04:05:28PM +0300, Alexey Gladkov wrote:
> Update of /people/legion/packages/make-initrd.git
[...]
> --- a/make-initrd.in
> +++ b/make-initrd.in
> @@ -1,4 +1,25 @@
>  #!/bin/sh -efu
> =20
> +PROG=3D"${0##*/}"
> +TEMPDIR=3D
> +term_handler() {
> +	local rc=3D$?
> +	[ -z "$TEMPDIR" ] || rm -rf -- "$TEMPDIR"
> +	exit $rc
> +}
> +
> +exit_handler() {
> +	local rc=3D$?
> +	trap - EXIT
> +	[ -z "$TEMPDIR" ] || rmdir -- "$TEMPDIR" 2>/dev/null ||:
> +	exit $rc
> +}
> +
> +
> +TEMPDIR=3D"$(mktemp -d "@TMPDIR@/$PROG.XXXXXXXXX")"
> +trap term_handler HUP INT QUIT TERM
> +trap exit_handler EXIT

=FC=D4=CF =D5=D6=C5 =D3=CF=D7=D3=C5=CD =D3=D4=C1=D2=D9=C5 =C7=D2=C1=C2=CC=
=C9: term_handler =D5=D3=D4=C1=CE=C1=D7=CC=C9=D7=C1=C5=D4 =D3=CC=D5=DE=C1=
=CA=CE=D9=CA =CB=CF=C4
=D7=CF=DA=D7=D2=C1=D4=C1 =C9 =D5=C4=C1=CC=D1=C5=D4 $TEMPDIR =C4=D7=C1=D6=C4=
=D9.

=F0=CF=C4=D2=CF=C2=CE=C5=C5 =CE=C1 =DC=D4=D5 =D4=C5=CD=D5 =D3=CD.
http://lists.gnu.org/archive/html/bug-gnulib/2010-01/msg00361.html
http://lists.gnu.org/archive/html/bug-gnulib/2010-01/msg00377.html

There is an interesting reading about portability issues related to
shell "trap" builtin:
http://www.gnu.org/software/hello/manual/autoconf/Limitations-of-Builtins.h=
tml#trap


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ldv

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