diff options
Diffstat (limited to 'src/udev/net')
| -rw-r--r-- | src/udev/net/link-config-gperf.gperf | 1 | ||||
| -rw-r--r-- | src/udev/net/link-config.c | 52 | ||||
| -rw-r--r-- | src/udev/net/link-config.h | 1 |
3 files changed, 52 insertions, 2 deletions
diff --git a/src/udev/net/link-config-gperf.gperf b/src/udev/net/link-config-gperf.gperf index 182a664192..b38dbe80bd 100644 --- a/src/udev/net/link-config-gperf.gperf +++ b/src/udev/net/link-config-gperf.gperf @@ -20,6 +20,7 @@ Match.Driver, config_parse_string, 0, offsetof(link Match.Type, config_parse_string, 0, offsetof(link_config, match_type) Link.Description, config_parse_string, 0, offsetof(link_config, description) Link.MACAddress, config_parse_string, 0, offsetof(link_config, mac) +Link.NamePolicy, config_parse_strv, 0, offsetof(link_config, name_policy) Link.Name, config_parse_string, 0, offsetof(link_config, name) Link.MTU, config_parse_unsigned, 0, offsetof(link_config, mtu) Link.SpeedMBytes, config_parse_unsigned, 0, offsetof(link_config, speed) diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c index bb0640589b..9c75b62b73 100644 --- a/src/udev/net/link-config.c +++ b/src/udev/net/link-config.c @@ -34,6 +34,7 @@ #include "path-util.h" #include "conf-parser.h" #include "conf-files.h" +#include "fileio.h" struct link_config_ctx { LIST_HEAD(link_config, links); @@ -308,8 +309,27 @@ static int rtnl_set_properties(sd_rtnl *rtnl, int ifindex, const char *name, con return 0; } +static bool enable_name_policy(void) { + _cleanup_free_ char *line; + char *w, *state; + int r; + size_t l; + + r = read_one_line_file("/proc/cmdline", &line); + if (r < 0) { + log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); + return true; /* something is very wrong, let's not make it worse */ + } + + FOREACH_WORD_QUOTED(w, l, line, state) + if (strneq(w, "net.ifnames=0", l)) + return false; + + return true; +} + int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_device *device) { - const char *name; + const char *name, *new_name = NULL; int r, ifindex; name = udev_device_get_sysname(device); @@ -355,7 +375,35 @@ int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_dev return -ENODEV; } - r = rtnl_set_properties(ctx->rtnl, ifindex, config->name, config->mac, config->mtu); + if (config->name_policy && enable_name_policy()) { + char **policy; + + STRV_FOREACH(policy, config->name_policy) { + if (streq(*policy, "onboard")) { + new_name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD"); + if (new_name) + break; + } else if (streq(*policy, "slot")) { + new_name = udev_device_get_property_value(device, "ID_NET_NAME_SLOT"); + if (new_name) + break; + } else if (streq(*policy, "path")) { + new_name = udev_device_get_property_value(device, "ID_NET_NAME_PATH"); + if (new_name) + break; + } else if (streq(*policy, "mac")) { + new_name = udev_device_get_property_value(device, "ID_NET_NAME_MAC"); + if (new_name) + break; + } else + log_warning("Invalid link naming policy '%s', ignoring.", *policy); + } + } + + if (!new_name && config->name) + new_name = config->name; + + r = rtnl_set_properties(ctx->rtnl, ifindex, new_name, config->mac, config->mtu); if (r < 0) { log_warning("Could not set Name, MACAddress or MTU on %s", name); return r; diff --git a/src/udev/net/link-config.h b/src/udev/net/link-config.h index 849e481520..0f57dc9cbc 100644 --- a/src/udev/net/link-config.h +++ b/src/udev/net/link-config.h @@ -39,6 +39,7 @@ struct link_config { char *description; char *mac; + char **name_policy; char *name; unsigned int mtu; unsigned int speed; |