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From aec8473f69877c353b9e788b2a7329e290ae14f9 Mon Sep 17 00:00:00 2001
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From: Yu Watanabe <watanabe.yu+github@gmail.com>
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Date: Fri, 17 Jul 2020 21:36:05 +0900
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Subject: [PATCH] udev: do not try to reassign alternative names
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Setting alternative names may fail if some of them are already assigned.
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(cherry picked from commit 97fdae33dfe8e7e0a4e5230564f6cdebc4450eec)
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Related: #2005008
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---
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src/udev/net/link-config.c | 12 ++++++++++--
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1 file changed, 10 insertions(+), 2 deletions(-)
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diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
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index 8bd374d352..5220f247f0 100644
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--- a/src/udev/net/link-config.c
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+++ b/src/udev/net/link-config.c
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@@ -350,7 +350,7 @@ static int get_mac(struct udev_device *device, bool want_random,
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int link_config_apply(link_config_ctx *ctx, link_config *config,
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struct udev_device *device, const char **name) {
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- _cleanup_strv_free_ char **altnames = NULL;
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+ _cleanup_strv_free_ char **altnames = NULL, **current_altnames = NULL;
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bool respect_predictable = false;
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struct ether_addr generated_mac;
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struct ether_addr *mac = NULL;
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@@ -514,9 +514,17 @@ int link_config_apply(link_config_ctx *ctx, link_config *config,
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if (new_name)
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strv_remove(altnames, new_name);
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strv_remove(altnames, old_name);
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+
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+ r = rtnl_get_link_alternative_names(&ctx->rtnl, ifindex, ¤t_altnames);
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+ if (r < 0)
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+ log_debug_errno(r, "Failed to get alternative names on %s, ignoring: %m", old_name);
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+
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+ char **p;
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+ STRV_FOREACH(p, current_altnames)
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+ strv_remove(altnames, *p);
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+
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strv_uniq(altnames);
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strv_sort(altnames);
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-
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r = rtnl_set_link_alternative_names(&ctx->rtnl, ifindex, altnames);
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if (r == -EOPNOTSUPP)
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log_debug_errno(r, "Could not set AlternativeName= or apply AlternativeNamesPolicy= on %s, ignoring: %m", old_name);
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