4f3af906fb
This version brings bug fixes, enhancements and a new script utility,
scriptlive. For detailed information see the release notes:
http://www.kernel.org/pub/linux/utils/util-linux/v2.35/v2.35-ReleaseNotes
Pull some fixed applied after the release.
Disable the use of code under GPLv3 included in hwclock since v2.30. The
subject was discussed upstream[1] and it was decided that hwclock will
be made GPLv2-only again in v2.36, so do it in advance in Buildroot.
Meanwhile, be warned that all OS images selecting hwclock built with
Buildroot since commit 74235a6854 (util-linux: bump to version 2.30)
contain code under GPLv3, which imposes some technical difficulties to
include in embedded systems. For more information see GPLv3, Section 6,
"Conveying Non-Source Forms", and the definitions of User Product and
Installation Information[2].
1. https://lore.kernel.org/util-linux/20200127202152.4jh2w4chch37wgee@ws.net.home/T/#t
2. https://www.gnu.org/licenses/gpl-3.0.html
Signed-off-by: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
72 lines
2.4 KiB
Diff
72 lines
2.4 KiB
Diff
From 2b26438c4bf90b7836111cc49d847ee89e49bfa8 Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Thu, 23 Jan 2020 12:44:58 +0100
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Subject: [PATCH] sfdisk: make sure we do not overlap on --move
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The area we need to move does not have to be aligned to optimal I/O
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size (step size) -- we need to be sure we do not move data
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after/before the area.
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Addresses: https://github.com/karelzak/util-linux/issues/938
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Signed-off-by: Karel Zak <kzak@redhat.com>
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---
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disk-utils/sfdisk.c | 14 ++++++++++++--
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1 file changed, 12 insertions(+), 2 deletions(-)
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diff --git a/disk-utils/sfdisk.c b/disk-utils/sfdisk.c
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index 0601c3bcf..8f2edb87f 100644
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--- a/disk-utils/sfdisk.c
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+++ b/disk-utils/sfdisk.c
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@@ -374,7 +374,7 @@ static int move_partition_data(struct sfdisk *sf, size_t partno, struct fdisk_pa
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int ok = 0, fd, backward = 0;
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fdisk_sector_t nsectors, from, to, step, i, prev;
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size_t io, ss, step_bytes, cc;
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- uintmax_t src, dst;
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+ uintmax_t src, dst, nbytes;
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int errsv, progress = 0;
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struct timeval prev_time;
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uint64_t bytes_per_sec = 0;
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@@ -409,6 +409,7 @@ static int move_partition_data(struct sfdisk *sf, size_t partno, struct fdisk_pa
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from = fdisk_partition_get_start(orig_pa);
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to = fdisk_partition_get_start(pa);
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+
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if ((to >= from && from + nsectors >= to) ||
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(from >= to && to + nsectors >= from)) {
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/* source and target overlay, check if we need to copy
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@@ -434,6 +435,8 @@ static int move_partition_data(struct sfdisk *sf, size_t partno, struct fdisk_pa
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while (nsectors % step)
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step--;
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+ nbytes = nsectors * ss;
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+
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DBG(MISC, ul_debug(" step: %ju (%zu bytes)", (uintmax_t)step, step_bytes));
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#if defined(POSIX_FADV_SEQUENTIAL) && defined(HAVE_POSIX_FADVISE)
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@@ -504,7 +507,7 @@ static int move_partition_data(struct sfdisk *sf, size_t partno, struct fdisk_pa
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gettimeofday(&prev_time, NULL);
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prev = 0;
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- for (cc = 1, i = 0; i < nsectors; i += step, cc++) {
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+ for (cc = 1, i = 0; i < nsectors && nbytes > 0; i += step, cc++) {
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ssize_t rc;
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if (backward)
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@@ -512,6 +515,13 @@ static int move_partition_data(struct sfdisk *sf, size_t partno, struct fdisk_pa
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DBG(MISC, ul_debug("#%05zu: src=%ju dst=%ju", cc, src, dst));
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+ if (nbytes < step_bytes) {
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+ DBG(MISC, ul_debug(" aligning step from %ju to %ju",
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+ step_bytes, nbytes));
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+ step_bytes = nbytes;
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+ }
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+ nbytes -= step_bytes;
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+
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if (!sf->noact) {
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/* read source */
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if (lseek(fd, src, SEEK_SET) == (off_t) -1)
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--
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2.18.2
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