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-rw-r--r--src/dns/nm-dns-manager.h120
1 files changed, 64 insertions, 56 deletions
diff --git a/src/dns/nm-dns-manager.h b/src/dns/nm-dns-manager.h
index 2a0c9dee..3f90dc87 100644
--- a/src/dns/nm-dns-manager.h
+++ b/src/dns/nm-dns-manager.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2004 - 2005 Colin Walters <walters@redhat.com>
  * Copyright (C) 2004 - 2013 Red Hat, Inc.
@@ -13,74 +13,73 @@
 #include "nm-setting-connection.h"
 
 typedef enum {
-	NM_DNS_IP_CONFIG_TYPE_REMOVED = -1,
+    NM_DNS_IP_CONFIG_TYPE_REMOVED = -1,
 
-	NM_DNS_IP_CONFIG_TYPE_DEFAULT = 0,
-	NM_DNS_IP_CONFIG_TYPE_BEST_DEVICE,
-	NM_DNS_IP_CONFIG_TYPE_VPN,
+    NM_DNS_IP_CONFIG_TYPE_DEFAULT = 0,
+    NM_DNS_IP_CONFIG_TYPE_BEST_DEVICE,
+    NM_DNS_IP_CONFIG_TYPE_VPN,
 } NMDnsIPConfigType;
 
 enum {
-	NM_DNS_PRIORITY_DEFAULT_NORMAL  = 100,
-	NM_DNS_PRIORITY_DEFAULT_VPN     = 50,
+    NM_DNS_PRIORITY_DEFAULT_NORMAL = 100,
+    NM_DNS_PRIORITY_DEFAULT_VPN    = 50,
 };
 
 struct _NMDnsConfigData;
 struct _NMDnsManager;
 
 typedef struct {
-	struct _NMDnsConfigData *data;
-	NMIPConfig *ip_config;
-	CList data_lst;
-	CList ip_config_lst;
-	NMDnsIPConfigType ip_config_type;
-	struct {
-		const char **search;
-		char **reverse;
-	} domains;
+    struct _NMDnsConfigData *data;
+    NMIPConfig *             ip_config;
+    CList                    data_lst;
+    CList                    ip_config_lst;
+    NMDnsIPConfigType        ip_config_type;
+    struct {
+        const char **search;
+        char **      reverse;
+    } domains;
 } NMDnsIPConfigData;
 
 typedef struct _NMDnsConfigData {
-	struct _NMDnsManager *self;
-	CList data_lst_head;
-	int ifindex;
+    struct _NMDnsManager *self;
+    CList                 data_lst_head;
+    int                   ifindex;
 } NMDnsConfigData;
 
-#define NM_TYPE_DNS_MANAGER (nm_dns_manager_get_type ())
-#define NM_DNS_MANAGER(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), NM_TYPE_DNS_MANAGER, NMDnsManager))
-#define NM_DNS_MANAGER_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), NM_TYPE_DNS_MANAGER, NMDnsManagerClass))
-#define NM_IS_DNS_MANAGER(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), NM_TYPE_DNS_MANAGER))
-#define NM_IS_DNS_MANAGER_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), NM_TYPE_DNS_MANAGER))
-#define NM_DNS_MANAGER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), NM_TYPE_DNS_MANAGER, NMDnsManagerClass))
+#define NM_TYPE_DNS_MANAGER (nm_dns_manager_get_type())
+#define NM_DNS_MANAGER(o)   (G_TYPE_CHECK_INSTANCE_CAST((o), NM_TYPE_DNS_MANAGER, NMDnsManager))
+#define NM_DNS_MANAGER_CLASS(k) \
+    (G_TYPE_CHECK_CLASS_CAST((k), NM_TYPE_DNS_MANAGER, NMDnsManagerClass))
+#define NM_IS_DNS_MANAGER(o)       (G_TYPE_CHECK_INSTANCE_TYPE((o), NM_TYPE_DNS_MANAGER))
+#define NM_IS_DNS_MANAGER_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE((k), NM_TYPE_DNS_MANAGER))
+#define NM_DNS_MANAGER_GET_CLASS(o) \
+    (G_TYPE_INSTANCE_GET_CLASS((o), NM_TYPE_DNS_MANAGER, NMDnsManagerClass))
 
 /* properties */
-#define NM_DNS_MANAGER_MODE "mode"
-#define NM_DNS_MANAGER_RC_MANAGER "rc-manager"
+#define NM_DNS_MANAGER_MODE          "mode"
+#define NM_DNS_MANAGER_RC_MANAGER    "rc-manager"
 #define NM_DNS_MANAGER_CONFIGURATION "configuration"
 
 /* internal signals */
 #define NM_DNS_MANAGER_CONFIG_CHANGED "config-changed"
 
-typedef struct _NMDnsManager NMDnsManager;
+typedef struct _NMDnsManager      NMDnsManager;
 typedef struct _NMDnsManagerClass NMDnsManagerClass;
 
-GType nm_dns_manager_get_type (void);
+GType nm_dns_manager_get_type(void);
 
-NMDnsManager * nm_dns_manager_get (void);
+NMDnsManager *nm_dns_manager_get(void);
 
 /* Allow changes to be batched together */
-void nm_dns_manager_begin_updates (NMDnsManager *self, const char *func);
-void nm_dns_manager_end_updates (NMDnsManager *self, const char *func);
+void nm_dns_manager_begin_updates(NMDnsManager *self, const char *func);
+void nm_dns_manager_end_updates(NMDnsManager *self, const char *func);
 
-gboolean nm_dns_manager_set_ip_config (NMDnsManager *self,
-                                       NMIPConfig *ip_config,
-                                       NMDnsIPConfigType ip_config_type);
+gboolean nm_dns_manager_set_ip_config(NMDnsManager *    self,
+                                      NMIPConfig *      ip_config,
+                                      NMDnsIPConfigType ip_config_type);
 
-void nm_dns_manager_set_initial_hostname (NMDnsManager *self,
-                                          const char *hostname);
-void nm_dns_manager_set_hostname         (NMDnsManager *self,
-                                          const char *hostname,
-                                          gboolean skip_update);
+void nm_dns_manager_set_initial_hostname(NMDnsManager *self, const char *hostname);
+void nm_dns_manager_set_hostname(NMDnsManager *self, const char *hostname, gboolean skip_update);
 
 /**
  * NMDnsManagerResolvConfManager
@@ -88,12 +87,20 @@ void nm_dns_manager_set_hostname         (NMDnsManager *self,
  * @NM_DNS_MANAGER_RESOLV_CONF_MAN_UNMANAGED: do not touch /etc/resolv.conf
  *   (but still write the internal copy -- unless it is symlinked by
  *   /etc/resolv.conf)
+ * @NM_DNS_MANAGER_RESOLV_CONF_MAN_AUTO: if /etc/resolv.conf is marked
+ *   as an immutable file, use "unmanaged" and don't touch /etc/resolv.conf.
+ *   Otherwise, if "systemd-resolved" is enabled (or detected), configure systemd-resolved via D-Bus
+ *   and don't touch /etc/resolv.conf.
+ *   Otherwise, if "resolvconf" application is found, use it.
+ *   As last resort, fallback to "symlink" which writes to /etc/resolv.conf
+ *   if (and only if) the file is missing or not a symlink.
  * @NM_DNS_MANAGER_RESOLV_CONF_MAN_IMMUTABLE: similar to "unmanaged",
  *   but indicates that resolv.conf cannot be modified.
- * @NM_DNS_MANAGER_RESOLV_CONF_MAN_SYMLINK: NM writes resolv.conf
- *   by symlinking it to the run state directory.
- * @NM_DNS_MANAGER_RESOLV_CONF_MAN_FILE: Like SYMLINK, but instead of
- *   symlinking /etc/resolv.conf, write it as a file.
+ * @NM_DNS_MANAGER_RESOLV_CONF_MAN_SYMLINK: NM writes /etc/resolv.conf
+ *   if the file is missing or not a symlink. An existing symlink is
+ *   left untouched.
+ * @NM_DNS_MANAGER_RESOLV_CONF_MAN_FILE: Write to /etc/resolv.conf directly.
+ *   If it is a file, write it as file, otherwise follow symlinks.
  * @NM_DNS_MANAGER_RESOLV_CONF_MAN_RESOLVCONF: NM is managing resolv.conf
      through resolvconf
  * @NM_DNS_MANAGER_RESOLV_CONF_MAN_NETCONFIG: NM is managing resolv.conf
@@ -102,23 +109,24 @@ void nm_dns_manager_set_hostname         (NMDnsManager *self,
  * NMDnsManager's management of resolv.conf
  */
 typedef enum {
-	NM_DNS_MANAGER_RESOLV_CONF_MAN_UNKNOWN,
-	NM_DNS_MANAGER_RESOLV_CONF_MAN_UNMANAGED,
-	NM_DNS_MANAGER_RESOLV_CONF_MAN_IMMUTABLE,
-	NM_DNS_MANAGER_RESOLV_CONF_MAN_SYMLINK,
-	NM_DNS_MANAGER_RESOLV_CONF_MAN_FILE,
-	NM_DNS_MANAGER_RESOLV_CONF_MAN_RESOLVCONF,
-	NM_DNS_MANAGER_RESOLV_CONF_MAN_NETCONFIG,
+    NM_DNS_MANAGER_RESOLV_CONF_MAN_UNKNOWN,
+    NM_DNS_MANAGER_RESOLV_CONF_MAN_AUTO,
+    NM_DNS_MANAGER_RESOLV_CONF_MAN_UNMANAGED,
+    NM_DNS_MANAGER_RESOLV_CONF_MAN_IMMUTABLE,
+    NM_DNS_MANAGER_RESOLV_CONF_MAN_SYMLINK,
+    NM_DNS_MANAGER_RESOLV_CONF_MAN_FILE,
+    NM_DNS_MANAGER_RESOLV_CONF_MAN_RESOLVCONF,
+    NM_DNS_MANAGER_RESOLV_CONF_MAN_NETCONFIG,
 } NMDnsManagerResolvConfManager;
 
-void nm_dns_manager_stop (NMDnsManager *self);
+void nm_dns_manager_stop(NMDnsManager *self);
 
-gboolean nm_dns_manager_has_systemd_resolved (NMDnsManager *self);
+gboolean nm_dns_manager_has_systemd_resolved(NMDnsManager *self);
 
 /*****************************************************************************/
 
-char *nmtst_dns_create_resolv_conf (const char *const*searches,
-                                    const char *const*nameservers,
-                                    const char *const*options);
+char *nmtst_dns_create_resolv_conf(const char *const *searches,
+                                   const char *const *nameservers,
+                                   const char *const *options);
 
 #endif /* __NETWORKMANAGER_DNS_MANAGER_H__ */