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From 144887f20bb2dc9f46060091db03d4f517f1d518 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
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Date: Wed, 2 Mar 2022 16:53:54 +0100
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Subject: [PATCH] shared/install: when we fail to chase a symlink, show some
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logs
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When chase_symlinks() fails, we'd get the generic error:
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Failed to disable: Permission denied.
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Let's at least add the failure to changes list, so the user gets
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a slightly better message. Ideally, we'd say where exactly the permission
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failure occured, but chase_symlinks() is a library level function and I don't
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think we should add logging there. The output looks like this now:
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Failed to resolve symlink "/tmp/systemctl-test.1r7Roj/etc/systemd/system/link5alias2.service": Permission denied
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Failed to resolve symlink "/tmp/systemctl-test.1r7Roj/etc/systemd/system/link5alias.service": Permission denied
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Failed to disable unit, file /tmp/systemctl-test.1r7Roj/etc/systemd/system/link5alias2.service: Permission denied.
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Failed to disable unit, file /tmp/systemctl-test.1r7Roj/etc/systemd/system/link5alias.service: Permission denied.
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(cherry picked from commit 212a24f0bbe4c54183d3b0ad9579a995007e29a8)
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Related: #2082131
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---
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src/shared/install.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/src/shared/install.c b/src/shared/install.c
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index bf11e5bdce..ce045d02be 100644
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--- a/src/shared/install.c
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+++ b/src/shared/install.c
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@@ -616,6 +616,9 @@ static int remove_marked_symlinks_fd(
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if (q == -ENOENT)
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continue;
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if (q < 0) {
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+ log_debug_errno(q, "Failed to resolve symlink \"%s\": %m", p);
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+ unit_file_changes_add(changes, n_changes, q, p, NULL);
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+
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if (r == 0)
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r = q;
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continue;
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