2021-02-12 08:18:34 +00:00
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Will Thompson <wjt@endlessm.com>
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Date: Wed, 11 Jul 2018 15:41:09 +0100
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Subject: [PATCH] blscfg: sort BLS entries by 'version' field
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This partially reverts ‘Use BLS fragment filename as menu entry id and
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for criteria to sort’. Sorting by filename only gives the correct order
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if the BLS entries are generated by a version of ostree after this patch
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https://github.com/ostreedev/ostree/commit/9f48e212a3bf9ed418fb3216e4f834d581bc520e
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to use the version (higher is newer) in the filename. Older ostrees,
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including all releases at the time of writing, use the index (lower is
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newer) in the filename, so sorting by filename produces the reverse
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order.
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Sorting by 'version' field matches libostree's own
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compare_boot_loader_configs(), so I think it's more correct than relying
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on the filename, particularly since we've already gone to the trouble of
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parsing all the fields in the file.
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Signed-off-by: Will Thompson <wjt@endlessm.com>
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---
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grub-core/commands/blscfg.c | 16 ++++++++++++++++
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1 file changed, 16 insertions(+)
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diff --git a/grub-core/commands/blscfg.c b/grub-core/commands/blscfg.c
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2022-02-11 05:27:54 +00:00
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index b61dddb7f..9c928dda4 100644
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2021-02-12 08:18:34 +00:00
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--- a/grub-core/commands/blscfg.c
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+++ b/grub-core/commands/blscfg.c
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@@ -327,10 +327,26 @@ finish:
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return ret;
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}
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+/* return 1: p0 is newer than p1 */
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+/* 0: p0 and p1 are the same version */
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+/* -1: p1 is newer than p0 */
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static int bls_cmp(const void *p0, const void *p1, void *state UNUSED)
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{
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struct bls_entry * e0 = *(struct bls_entry **)p0;
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struct bls_entry * e1 = *(struct bls_entry **)p1;
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+ const char *v0, *v1;
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+ int r;
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+
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+ v0 = bls_get_val(e0, "version", NULL);
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+ v1 = bls_get_val(e1, "version", NULL);
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+
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+ if (v0 && !v1)
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+ return -1;
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+ if (!v0 && v1)
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+ return 1;
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+
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+ if ((r = vercmp(v0, v1)) != 0)
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+ return r;
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return vercmp(e0->filename, e1->filename);
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}
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