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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/udev/udev-builtin-net_setup_link.c
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/udev/udev-builtin-net_setup_link.c')
-rw-r--r--src/udev/udev-builtin-net_setup_link.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/src/udev/udev-builtin-net_setup_link.c b/src/udev/udev-builtin-net_setup_link.c
new file mode 100644
index 0000000..a308a21
--- /dev/null
+++ b/src/udev/udev-builtin-net_setup_link.c
@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "device-util.h"
+#include "escape.h"
+#include "errno-util.h"
+#include "link-config.h"
+#include "log.h"
+#include "string-util.h"
+#include "strv.h"
+#include "udev-builtin.h"
+
+static LinkConfigContext *ctx = NULL;
+
+static int builtin_net_setup_link(UdevEvent *event, int argc, char **argv, bool test) {
+ sd_device *dev = ASSERT_PTR(ASSERT_PTR(event)->dev);
+ _cleanup_(link_freep) Link *link = NULL;
+ _cleanup_free_ char *joined = NULL;
+ int r;
+
+ if (argc > 1)
+ return log_device_error_errno(dev, SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments.");
+
+ r = link_new(ctx, &event->rtnl, dev, &link);
+ if (r == -ENODEV) {
+ log_device_debug_errno(dev, r, "Link vanished while getting information, ignoring.");
+ return 0;
+ }
+ if (r < 0)
+ return log_device_warning_errno(dev, r, "Failed to get link information: %m");
+
+ r = link_get_config(ctx, link);
+ if (r < 0) {
+ if (r == -ENOENT) {
+ log_device_debug_errno(dev, r, "No matching link configuration found, ignoring device.");
+ return 0;
+ }
+
+ return log_device_error_errno(dev, r, "Failed to get link config: %m");
+ }
+
+ r = link_apply_config(ctx, &event->rtnl, link);
+ if (r == -ENODEV)
+ log_device_debug_errno(dev, r, "Link vanished while applying configuration, ignoring.");
+ else if (r < 0)
+ log_device_warning_errno(dev, r, "Could not apply link configuration, ignoring: %m");
+
+ udev_builtin_add_property(dev, test, "ID_NET_LINK_FILE", link->config->filename);
+ if (link->new_name)
+ udev_builtin_add_property(dev, test, "ID_NET_NAME", link->new_name);
+
+ event->altnames = TAKE_PTR(link->altnames);
+
+ STRV_FOREACH(d, link->config->dropins) {
+ _cleanup_free_ char *escaped = NULL;
+
+ escaped = xescape(*d, ":");
+ if (!escaped)
+ return log_oom();
+
+ if (!strextend_with_separator(&joined, ":", escaped))
+ return log_oom();
+ }
+
+ udev_builtin_add_property(dev, test, "ID_NET_LINK_FILE_DROPINS", joined);
+
+ return 0;
+}
+
+static int builtin_net_setup_link_init(void) {
+ int r;
+
+ if (ctx)
+ return 0;
+
+ r = link_config_ctx_new(&ctx);
+ if (r < 0)
+ return r;
+
+ r = link_config_load(ctx);
+ if (r < 0)
+ return r;
+
+ log_debug("Created link configuration context.");
+ return 0;
+}
+
+static void builtin_net_setup_link_exit(void) {
+ ctx = link_config_ctx_free(ctx);
+ log_debug("Unloaded link configuration context.");
+}
+
+static bool builtin_net_setup_link_should_reload(void) {
+ if (!ctx)
+ return false;
+
+ if (link_config_should_reload(ctx)) {
+ log_debug("Link configuration context needs reloading.");
+ return true;
+ }
+
+ return false;
+}
+
+const UdevBuiltin udev_builtin_net_setup_link = {
+ .name = "net_setup_link",
+ .cmd = builtin_net_setup_link,
+ .init = builtin_net_setup_link_init,
+ .exit = builtin_net_setup_link_exit,
+ .should_reload = builtin_net_setup_link_should_reload,
+ .help = "Configure network link",
+ .run_once = false,
+};