Blame SOURCES/0024-Generate-a-zero-length-signature-for-symlinks.patch
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From 202359dc598f2162175e3a8552c9b338d27b8989 Mon Sep 17 00:00:00 2001
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From: Jes Sorensen <jsorensen@fb.com>
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Date: Tue, 14 Apr 2020 10:33:32 -0400
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Subject: [PATCH 24/33] Generate a zero-length signature for symlinks
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The fsverity utility follows the symlink when generating a signature.
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Since we don't want to sign the same file twice, we need to skip these
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links, and instead just generate a dummy zero-length signature here.
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Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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---
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sign/rpmsignverity.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/sign/rpmsignverity.c b/sign/rpmsignverity.c
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index 177561957..2c7d21620 100644
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--- a/sign/rpmsignverity.c
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+++ b/sign/rpmsignverity.c
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@@ -45,7 +45,10 @@ static char *rpmVeritySignFile(rpmfi fi, size_t *sig_size, char *key,
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uint8_t *sig = NULL;
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int status;
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- file_size = rpmfiFSize(fi);
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+ if (S_ISLNK(rpmfiFMode(fi)))
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+ file_size = 0;
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+ else
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+ file_size = rpmfiFSize(fi);
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memset(¶ms, 0, sizeof(struct libfsverity_merkle_tree_params));
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params.version = 1;
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--
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2.27.0
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