56 lines
2.0 KiB
Diff
56 lines
2.0 KiB
Diff
From 4eacc6c63a2935cd25bb404639ce8c8bd0747866 Mon Sep 17 00:00:00 2001
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Message-ID: <4eacc6c63a2935cd25bb404639ce8c8bd0747866.1739824250.git.jdenemar@redhat.com>
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From: Andrea Bolognani <abologna@redhat.com>
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Date: Thu, 13 Feb 2025 09:54:05 +0100
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Subject: [PATCH] utils: Canonicalize paths before comparing them
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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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In virFileIsSharedFSOverride() we compare a path against a list
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of overrides looking for a match.
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All overrides are canonicalized ahead of time though, so e.g.
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/var/run/foo will be turned into /run/foo due to /var/run being
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a symlink on modern Linux systems. But the path we're trying to
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match with the overrides doesn't get the same treatment, so in
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this scenario the comparison will always fail.
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Canonicalizing the path as well solves the issue.
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Resolves: https://issues.redhat.com/browse/RHEL-79165
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Signed-off-by: Andrea Bolognani <abologna@redhat.com>
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Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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(cherry picked from commit f2023e8018fe18550ad6aec66fe72bd1376f8522)
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https://issues.redhat.com/browse/RHEL-79166
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Signed-off-by: Andrea Bolognani <abologna@redhat.com>
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---
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src/util/virfile.c | 9 ++++++---
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1 file changed, 6 insertions(+), 3 deletions(-)
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diff --git a/src/util/virfile.c b/src/util/virfile.c
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index 6ac0f4efb3..7cab3d0cd6 100644
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--- a/src/util/virfile.c
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+++ b/src/util/virfile.c
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@@ -3823,10 +3823,13 @@ virFileIsSharedFSOverride(const char *path,
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if (!path || path[0] != '/' || !overrides)
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return false;
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- if (g_strv_contains((const char *const *) overrides, path))
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- return true;
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+ /* Overrides have been canonicalized ahead of time, so we need to
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+ * do the same for the provided path or we'll never be able to
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+ * find a match if symlinks are involved */
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+ dirpath = virFileCanonicalizePath(path);
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- dirpath = g_strdup(path);
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+ if (g_strv_contains((const char *const *) overrides, dirpath))
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+ return true;
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/* Continue until we've scanned the entire path */
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while (p != dirpath) {
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--
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2.48.1
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