From: Alexey Gladkov <gladkov.alexey@gmail.com> To: make-initrd@lists.altlinux.org Subject: Re: [make-initrd] [PATCH v6 10/22] bootchain-core: expanded addressing capabilities Date: Tue, 26 Oct 2021 15:58:34 +0200 Message-ID: <20211026135834.wvsbihztce6466sz@example.org> (raw) In-Reply-To: <5fea746a-25c2-01ee-3403-ed4a4815968f@gmail.com> On Tue, Oct 26, 2021 at 02:28:53PM +0300, Leonid Krivoshein wrote: > > > 26.10.2021 14:12, Alexey Gladkov пишет: > > On Sun, Oct 24, 2021 at 08:21:28PM +0300, Leonid Krivoshein wrote: > > > Adds support for reverse addressing relative to the current step, > > > as well as calculating the path to the special device node obtained > > > in the previous step. > > > > > > Signed-off-by: Leonid Krivoshein <klark.devel@gmail.com> > > > --- > > > features/bootchain-core/README.md | 6 +++ > > > .../data/bin/bootchain-sh-functions | 37 ++++++++++++++++--- > > > 2 files changed, 38 insertions(+), 5 deletions(-) > > > > > > diff --git a/features/bootchain-core/README.md b/features/bootchain-core/README.md > > > index 8d341e0..ba66259 100644 > > > --- a/features/bootchain-core/README.md > > > +++ b/features/bootchain-core/README.md > > > @@ -49,6 +49,12 @@ us to optimize fill in `initramfs` only which we are need. > > > - Modularity: loading methods are initially separated from the common > > > code and daemon. > > > +- Via resolve_target() supports not only forward, but also reverse addressing, > > > + relative to the current step. For example, a record like `step-3/dir1/dev` > > > + will process the result of `dir1/dev`, made in the third step from the current > > > + one. Together with the overload of the chain of steps, direct addressing is safe > > > + only when storing the numbers of the completed steps in files, whereas reverse > > > + relative addressing it is safe in any case and can often be more convenient. > > На мой взгляд очень непонятный синтаксис. step1 и step-1 кажется > > одинаковым. Хотя бы current-1 > > OK. Давай переделаю так: > > step<N> = pipe<N> -- прямая адресация, так первоначально и было. > curr-<N> -- обратная относительная адресация. > > Так будет лучше? Мне будет понятнее. Но я хотел бы спросить помощи зала. Глеб, Антон, как вы думаете, как будет понятнее ? > > > > > > - Allows you to work with shorter and more familiar paths to special files > > > devices thanks to the use of `DEVNAME` along with `dev`. > > > diff --git a/features/bootchain-core/data/bin/bootchain-sh-functions b/features/bootchain-core/data/bin/bootchain-sh-functions > > > index e73fd35..0eebbaf 100644 > > > --- a/features/bootchain-core/data/bin/bootchain-sh-functions > > > +++ b/features/bootchain-core/data/bin/bootchain-sh-functions > > > @@ -27,19 +27,46 @@ get_parameter() > > > resolve_target() > > > { > > > local target="$1" > > > + local where="${target%%/*}" > > > + local n="${#where}" > > > - case "${target%%/*}" in > > > + target="${target:$n}" > > > + > > > + case "$where" in > > > '') > > > ;; > > > pipe[0-9]|pipe[0-9][0-9]|pipe[0-9][0-9][0-9]) > > > - target="$mntdir/dst/step${target:4}" > > > + [ -d "$mntdir/dst/step${where:4}" ] || > > > + return 0 > > > + target="$(readlink-e "$mntdir/dst/step${where:4}")${target}" > > > + ;; > > > + step-[1-9]|step-[1-9][0-9]|step-[1-9][0-9][0-9]) > > > + case "$destdir" in > > > + "$mntdir"/dst/step[0-9]*) > > > + n="${destdir##*/}" > > > + n="$(( ${n:4} - ${where:5} ))" > > > + ;; > > > + *) > > > + return 0 > > > + ;; > > > + esac > > > + [ "$n" -ge 0 ] && [ -d "$mntdir/dst/step$n" ] || > > > + return 0 > > > + target="$(readlink-e "$mntdir/dst/step$n")${target}" > > > ;; > > > *) > > > if [ -z "${prevdir-}" ]; then > > > - message "no previous stop to use" > > > - return > > > + message "no previous step results to use with $name" > > > + return 0 > > > + fi > > > + if [ -z "$target" ] && > > > + [ "$where" = DEVNAME ] && > > > + [ -s "$prevdir"/DEVNAME ] > > > + then > > > + read -r target <"$prevdir"/DEVNAME ||: > > > + else > > > + target="$prevdir/${where#/}${target}" > > > fi > > > - target="$prevdir/${target#/}" > > > ;; > > > esac > > > -- > > > 2.24.1 > > > > > > _______________________________________________ > > > Make-initrd mailing list > > > Make-initrd@lists.altlinux.org > > > https://lists.altlinux.org/mailman/listinfo/make-initrd > > > > > -- > Best regards, > Leonid Krivoshein. > > _______________________________________________ > Make-initrd mailing list > Make-initrd@lists.altlinux.org > https://lists.altlinux.org/mailman/listinfo/make-initrd -- Rgrds, legion
next prev parent reply other threads:[~2021-10-26 13:58 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-26 11:12 ` Alexey Gladkov 2021-10-26 11:28 ` Leonid Krivoshein 2021-10-26 13:58 ` Alexey Gladkov [this message] 2021-10-29 23:50 ` Gleb Fotengauer-Malinovskiy 2021-10-30 2:13 ` Leonid Krivoshein 2021-11-06 12:47 ` Alexey Gladkov 2021-11-06 14:26 ` Leonid Krivoshein
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