From: Yu Watanabe Date: Sat, 15 Oct 2022 00:30:22 +0000 (+0900) Subject: udev: drop unused source file X-Git-Tag: v252-rc2~32 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3e15bed410ff616f5015b4e87eb25d1fee8828e5;p=thirdparty%2Fsystemd.git udev: drop unused source file Follow-up for 5bbcfbaa11a92732f9bbc8d5f77e9311e6ac3d56. --- diff --git a/src/udev/udev-netlink.c b/src/udev/udev-netlink.c deleted file mode 100644 index 3c41f159634..00000000000 --- a/src/udev/udev-netlink.c +++ /dev/null @@ -1,330 +0,0 @@ -/* SPDX-License-Identifier: LGPL-2.1-or-later */ - -#include "device-private.h" -#include "hexdecoct.h" -#include "netlink-util.h" -#include "strv.h" -#include "udev-netlink.h" - -void link_info_clear(LinkInfo *info) { - if (!info) - return; - - info->ifname = mfree(info->ifname); - info->ifalias = mfree(info->ifalias); - info->phys_port_id = mfree(info->phys_port_id); - info->phys_switch_id = mfree(info->phys_switch_id); - info->phys_port_name = mfree(info->phys_port_name); -} - -int link_info_get(sd_netlink **rtnl, int ifindex, LinkInfo *ret) { - _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL, *reply = NULL; - _cleanup_(link_info_clear) LinkInfo info = LINK_INFO_NULL; - uint16_t nlmsg_type, max_attr; - int r; - - assert(rtnl); - assert(ifindex > 0); - assert(ret); - - if (!*rtnl) { - r = sd_netlink_open(rtnl); - if (r < 0) - return r; - } - - r = sd_rtnl_message_new_link(*rtnl, &message, RTM_GETLINK, ifindex); - if (r < 0) - return r; - - r = sd_netlink_call(*rtnl, message, 0, &reply); - if (r == -EINVAL) - return -ENODEV; /* The device does not exist */ - if (r < 0) - return r; - - r = sd_netlink_message_get_type(reply, &nlmsg_type); - if (r < 0) - return r; - if (nlmsg_type != RTM_NEWLINK) - return -ENXIO; - - r = sd_rtnl_message_link_get_ifindex(reply, &info.ifindex); - if (r < 0) - return r; - if (info.ifindex != ifindex) - return -ENXIO; - - r = sd_rtnl_message_link_get_type(reply, &info.iftype); - if (r < 0) - return r; - - r = netlink_message_read_hw_addr(reply, IFLA_ADDRESS, &info.hw_addr); - if (r < 0 && r != -ENODATA) - return r; - - r = netlink_message_read_hw_addr(reply, IFLA_BROADCAST, &info.broadcast); - if (r < 0 && r != -ENODATA) - return r; - - r = sd_netlink_message_read_string_strdup(reply, IFLA_IFNAME, &info.ifname); - if (r < 0) - return r; - - r = sd_netlink_message_read_u32(reply, IFLA_MTU, &info.mtu); - if (r < 0) - return r; - - r = sd_netlink_message_read_u32(reply, IFLA_LINK, &info.iflink); - if (r == -ENODATA) - info.iflink = info.ifindex; - else if (r < 0) - return r; - - r = sd_netlink_message_read_u8(reply, IFLA_LINKMODE, &info.link_mode); - if (r < 0) - return r; - - r = sd_netlink_message_read_string_strdup(reply, IFLA_IFALIAS, &info.ifalias); - if (r < 0 && r != -ENODATA) - return r; - - r = sd_netlink_message_read_u32(reply, IFLA_GROUP, &info.group); - if (r < 0) - return r; - - r = sd_netlink_message_read_data(reply, IFLA_PHYS_PORT_ID, - &info.phys_port_id_len, (void**) &info.phys_port_id); - if (r < 0 && r != -ENODATA) - return r; - - r = sd_netlink_message_read_data(reply, IFLA_PHYS_SWITCH_ID, - &info.phys_switch_id_len, (void**) &info.phys_switch_id); - if (r < 0 && r != -ENODATA) - return r; - - r = sd_netlink_message_read_string_strdup(reply, IFLA_PHYS_PORT_NAME, &info.phys_port_name); - if (r < 0 && r != -ENODATA) - return r; - - r = sd_netlink_message_get_max_attribute(reply, &max_attr); - if (r < 0) - return r; - - info.phys_port_id_supported = max_attr >= IFLA_PHYS_PORT_ID; - info.phys_switch_id_supported = max_attr >= IFLA_PHYS_SWITCH_ID; - info.phys_port_name_supported = max_attr >= IFLA_PHYS_PORT_NAME; - - *ret = info; - info = LINK_INFO_NULL; - return 0; -} - -static int cache_unsigned(sd_device *device, const char *attr, uint64_t val) { - _cleanup_free_ char *str = NULL; - int r; - - assert(device); - assert(attr); - - if (device_get_cached_sysattr_value(device, attr, NULL) != -ESTALE) - return 0; - - if (asprintf(&str, "%"PRIu64, val) < 0) - return -ENOMEM; - - r = device_cache_sysattr_value(device, attr, str); - if (r < 0) - return r; - - TAKE_PTR(str); - return 0; -} - -static int cache_hw_addr(sd_device *device, const char *attr, const struct hw_addr_data *hw_addr) { - _cleanup_free_ char *str = NULL; - int r; - - assert(device); - assert(attr); - assert(hw_addr); - - if (device_get_cached_sysattr_value(device, attr, NULL) != -ESTALE) - return 0; - - str = new(char, HW_ADDR_TO_STRING_MAX); - if (!str) - return -ENOMEM; - - r = device_cache_sysattr_value(device, attr, hw_addr_to_string(hw_addr, str)); - if (r < 0) - return r; - - TAKE_PTR(str); - return 0; -} - -static int cache_binary(sd_device *device, const char *attr, size_t len, const uint8_t *data) { - _cleanup_free_ char *str = NULL; - int r; - - assert(device); - assert(attr); - - if (device_get_cached_sysattr_value(device, attr, NULL) != -ESTALE) - return 0; - - if (data) { - size_t j = 0; - - str = new(char, len * 2 + 1); - if (!str) - return -ENOMEM; - - for (size_t i = 0; i < len; i++) { - str[j++] = hexchar(data[i] >> 4); - str[j++] = hexchar(data[i] & 0x0f); - } - - str[j] = '\0'; - } - - r = device_cache_sysattr_value(device, attr, str); - if (r < 0) - return r; - - TAKE_PTR(str); - return 0; -} - -static int cache_string(sd_device *device, const char *attr, const char *val) { - _cleanup_free_ char *str = NULL; - int r; - - assert(device); - assert(attr); - - if (device_get_cached_sysattr_value(device, attr, NULL) != -ESTALE) - return 0; - - if (val) { - str = strdup(val); - if (!str) - return -ENOMEM; - } - - r = device_cache_sysattr_value(device, attr, str); - if (r < 0) - return r; - - TAKE_PTR(str); - return 0; -} - -int device_cache_sysattr_from_link_info(sd_device *device, LinkInfo *info) { - int ifindex, r; - - assert(device); - assert(info); - - r = sd_device_get_ifindex(device, &ifindex); - if (r < 0) - return r; - - if (ifindex != info->ifindex) - return -EINVAL; - - r = cache_unsigned(device, "type", info->iftype); - if (r < 0) - return r; - - r = cache_unsigned(device, "addr_len", info->hw_addr.length); - if (r < 0) - return r; - - r = cache_hw_addr(device, "address", &info->hw_addr); - if (r < 0) - return r; - - r = cache_hw_addr(device, "broadcast", &info->broadcast); - if (r < 0) - return r; - - r = cache_unsigned(device, "mtu", info->mtu); - if (r < 0) - return r; - - r = cache_unsigned(device, "iflink", info->iflink); - if (r < 0) - return r; - - r = cache_unsigned(device, "link_mode", info->link_mode); - if (r < 0) - return r; - - r = cache_string(device, "ifalias", strempty(info->ifalias)); - if (r < 0) - return r; - - r = cache_unsigned(device, "netdev_group", info->group); - if (r < 0) - return r; - - if (info->phys_port_id_supported) { - r = cache_binary(device, "phys_port_id", info->phys_port_id_len, info->phys_port_id); - if (r < 0) - return r; - } - - if (info->phys_switch_id_supported) { - r = cache_binary(device, "phys_switch_id", info->phys_switch_id_len, info->phys_switch_id); - if (r < 0) - return r; - } - - if (info->phys_port_name_supported) { - r = cache_string(device, "phys_port_name", info->phys_port_name); - if (r < 0) - return r; - } - - return 0; -} - -int device_get_sysattr_value_maybe_from_netlink( - sd_device *device, - sd_netlink **rtnl, - const char *sysattr, - const char **ret_value) { - - _cleanup_(link_info_clear) LinkInfo info = LINK_INFO_NULL; - int ifindex, r; - - assert(device); - assert(rtnl); - assert(sysattr); - - if (sd_device_get_ifindex(device, &ifindex) < 0) - return sd_device_get_sysattr_value(device, sysattr, ret_value); - - if (!STR_IN_SET(sysattr, - "type", "addr_len", "address", "broadcast", "mtu", "iflink", "linkmode", - "ifalias", "group", "phys_port_id", "phys_switch_id", "phys_port_name")) - return sd_device_get_sysattr_value(device, sysattr, ret_value); - - r = device_get_cached_sysattr_value(device, sysattr, ret_value); - if (r != -ESTALE) - return r; - - r = link_info_get(rtnl, ifindex, &info); - if (r < 0) - return r; - - r = device_cache_sysattr_from_link_info(device, &info); - if (r < 0) - return r; - - /* Do not use device_get_cached_sysattr_value() here, as kernel may not support - * IFLA_PHYS_PORT_NAME, and in that case we need to read the value from sysfs. */ - return sd_device_get_sysattr_value(device, sysattr, ret_value); -}