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Thu, 29 Jan 2026 12:48:58 -0800 (PST) Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20260129201347.411015-1-govind.varadar@gmail.com> <20260129201347.411015-2-govind.varadar@gmail.com> In-Reply-To: <20260129201347.411015-2-govind.varadar@gmail.com> From: Caleb Sander Mateos Date: Thu, 29 Jan 2026 12:48:47 -0800 X-Gm-Features: AZwV_QjzuriaOysLvS44pSe_C_oijO9lNrjQKfR9zwyYW5mmEwJyCNqpzpZ0JVQ Message-ID: Subject: Re: [PATCH 1/2] io_uring: Add size check for sqe->cmd To: Govindarajulu Varadarajan Cc: io-uring@vger.kernel.org, axboe@kernel.dk, ming.lei@redhat.com, kbusch@kernel.org, hch@lst.de, sagi@grimberg.me, miklos@szeredi.hu Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-DKIM: signer='purestorage.com' status='pass' reason='' DKIMCheck: Server passes DKIM test, 0 Spam score X-Spam-Score: 0.4 (/) X-Spam-Report: Spam detection software, running on the system "witcher.mxrouting.net", has performed the tests listed below against this email. Information: https://mxroutedocs.com/directadmin/spamfilters/ --- Content analysis details: (0.4 points) --- pts rule name description ---- ---------------------- ----------------------------------------- 1.5 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different 0.0 URIBL_BLOCKED ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [URIs: purestorage.com] 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -1.0 MAILING_LIST_MULTI Multiple indicators imply a widely-seen list manager SpamTally: Final spam score: 4 On Thu, Jan 29, 2026 at 12:14=E2=80=AFPM Govindarajulu Varadarajan wrote: > > For SQE128, sqe->cmd provides 80 bytes for uring_cmd. Add macro to > check if size of user struct does not exceed 80 bytes at compile time. > User doesn't have to track this manually during development. > > Replace io_uring_sqe_cmd() with IO_URING_SQE_CMD() which checks struct > size for 16 bytes cmd. > > Signed-off-by: Govindarajulu Varadarajan > --- > drivers/block/ublk_drv.c | 14 ++++++++------ > drivers/nvme/host/ioctl.c | 2 +- > fs/fuse/dev_uring.c | 6 ++++-- > include/linux/io_uring/cmd.h | 15 +++++++++++---- > 4 files changed, 24 insertions(+), 13 deletions(-) > > diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c > index 4265b7610c95..7c8a23709efa 100644 > --- a/drivers/block/ublk_drv.c > +++ b/drivers/block/ublk_drv.c > @@ -3155,7 +3155,7 @@ static int ublk_ch_uring_cmd_local(struct io_uring_= cmd *cmd, > unsigned int issue_flags) > { > /* May point to userspace-mapped memory */ > - const struct ublksrv_io_cmd *ub_src =3D io_uring_sqe_cmd(cmd->sqe= ); > + const struct ublksrv_io_cmd *ub_src =3D IO_URING_SQE_CMD(cmd->sqe= , struct ublksrv_io_cmd); > u16 buf_idx =3D UBLK_INVALID_BUF_IDX; > struct ublk_device *ub =3D cmd->file->private_data; > struct ublk_queue *ubq; > @@ -3735,7 +3735,7 @@ static int ublk_validate_batch_fetch_cmd(struct ubl= k_batch_io_data *data) > static int ublk_handle_non_batch_cmd(struct io_uring_cmd *cmd, > unsigned int issue_flags) > { > - const struct ublksrv_io_cmd *ub_cmd =3D io_uring_sqe_cmd(cmd->sqe= ); > + const struct ublksrv_io_cmd *ub_cmd =3D IO_URING_SQE_CMD(cmd->sqe= , struct ublksrv_io_cmd); > struct ublk_device *ub =3D cmd->file->private_data; > unsigned tag =3D READ_ONCE(ub_cmd->tag); > unsigned q_id =3D READ_ONCE(ub_cmd->q_id); > @@ -3764,7 +3764,7 @@ static int ublk_handle_non_batch_cmd(struct io_urin= g_cmd *cmd, > static int ublk_ch_batch_io_uring_cmd(struct io_uring_cmd *cmd, > unsigned int issue_flags) > { > - const struct ublk_batch_io *uc =3D io_uring_sqe_cmd(cmd->sqe); > + const struct ublk_batch_io *uc =3D IO_URING_SQE_CMD(cmd->sqe, str= uct ublk_batch_io); > struct ublk_device *ub =3D cmd->file->private_data; > struct ublk_batch_io_data data =3D { > .ub =3D ub, > @@ -4653,7 +4653,8 @@ static int ublk_ctrl_del_dev(struct ublk_device **p= _ub, bool wait) > > static inline void ublk_ctrl_cmd_dump(struct io_uring_cmd *cmd) > { > - const struct ublksrv_ctrl_cmd *header =3D io_uring_sqe_cmd(cmd->s= qe); > + const struct ublksrv_ctrl_cmd *header =3D IO_URING_SQE128_CMD(cmd= ->sqe, > + struc= t ublksrv_ctrl_cmd); > > pr_devel("%s: cmd_op %x, dev id %d qid %d data %llx buf %llx len = %u\n", > __func__, cmd->cmd_op, header->dev_id, header->qu= eue_id, > @@ -5061,7 +5062,7 @@ static int ublk_char_dev_permission(struct ublk_dev= ice *ub, > static int ublk_ctrl_uring_cmd_permission(struct ublk_device *ub, > struct io_uring_cmd *cmd) > { > - struct ublksrv_ctrl_cmd *header =3D (struct ublksrv_ctrl_cmd *)io= _uring_sqe_cmd(cmd->sqe); > + struct ublksrv_ctrl_cmd *header =3D IO_URING_SQE128_CMD(cmd->sqe,= struct ublksrv_ctrl_cmd); > bool unprivileged =3D ub->dev_info.flags & UBLK_F_UNPRIVILEGED_DE= V; > void __user *argp =3D (void __user *)(unsigned long)header->addr; > char *dev_path =3D NULL; > @@ -5152,7 +5153,8 @@ static bool ublk_ctrl_uring_cmd_may_sleep(u32 cmd_o= p) > static int ublk_ctrl_uring_cmd(struct io_uring_cmd *cmd, > unsigned int issue_flags) > { > - const struct ublksrv_ctrl_cmd *header =3D io_uring_sqe_cmd(cmd->s= qe); > + const struct ublksrv_ctrl_cmd *header =3D IO_URING_SQE128_CMD(cmd= ->sqe, > + struc= t ublksrv_ctrl_cmd); > struct ublk_device *ub =3D NULL; > u32 cmd_op =3D cmd->cmd_op; > int ret =3D -EINVAL; > diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c > index fb62633ccbb0..90c49bb727ad 100644 > --- a/drivers/nvme/host/ioctl.c > +++ b/drivers/nvme/host/ioctl.c > @@ -447,7 +447,7 @@ static int nvme_uring_cmd_io(struct nvme_ctrl *ctrl, = struct nvme_ns *ns, > struct io_uring_cmd *ioucmd, unsigned int issue_flags, bo= ol vec) > { > struct nvme_uring_cmd_pdu *pdu =3D nvme_uring_cmd_pdu(ioucmd); > - const struct nvme_uring_cmd *cmd =3D io_uring_sqe_cmd(ioucmd->sqe= ); > + const struct nvme_uring_cmd *cmd =3D IO_URING_SQE128_CMD(ioucmd->= sqe, struct nvme_uring_cmd); Some of these lines are quite long > struct request_queue *q =3D ns ? ns->queue : ctrl->admin_q; > struct nvme_uring_data d; > struct nvme_command c; > diff --git a/fs/fuse/dev_uring.c b/fs/fuse/dev_uring.c > index 5ceb217ced1b..7dddba72f406 100644 > --- a/fs/fuse/dev_uring.c > +++ b/fs/fuse/dev_uring.c > @@ -879,7 +879,8 @@ static int fuse_ring_ent_set_commit(struct fuse_ring_= ent *ent) > static int fuse_uring_commit_fetch(struct io_uring_cmd *cmd, int issue_f= lags, > struct fuse_conn *fc) > { > - const struct fuse_uring_cmd_req *cmd_req =3D io_uring_sqe_cmd(cmd= ->sqe); > + const struct fuse_uring_cmd_req *cmd_req =3D IO_URING_SQE128_CMD(= cmd->sqe, > + st= ruct fuse_uring_cmd_req); > struct fuse_ring_ent *ent; > int err; > struct fuse_ring *ring =3D fc->ring; > @@ -1083,7 +1084,8 @@ fuse_uring_create_ring_ent(struct io_uring_cmd *cmd= , > static int fuse_uring_register(struct io_uring_cmd *cmd, > unsigned int issue_flags, struct fuse_conn= *fc) > { > - const struct fuse_uring_cmd_req *cmd_req =3D io_uring_sqe_cmd(cmd= ->sqe); > + const struct fuse_uring_cmd_req *cmd_req =3D IO_URING_SQE128_CMD(= cmd->sqe, > + st= ruct fuse_uring_cmd_req); > struct fuse_ring *ring =3D smp_load_acquire(&fc->ring); > struct fuse_ring_queue *queue; > struct fuse_ring_ent *ent; > diff --git a/include/linux/io_uring/cmd.h b/include/linux/io_uring/cmd.h > index 375fd048c4cb..e8fd93e90cde 100644 > --- a/include/linux/io_uring/cmd.h > +++ b/include/linux/io_uring/cmd.h > @@ -20,10 +20,17 @@ struct io_uring_cmd { > u8 unused[8]; > }; > > -static inline const void *io_uring_sqe_cmd(const struct io_uring_sqe *sq= e) > -{ > - return sqe->cmd; > -} > +#define IO_URING_SQE128_CMD(sqe, type) ({ = \ > + BUILD_BUG_ON(sizeof(type) > ((2 * sizeof(struct io_uring_sqe)) - = \ > + offsetof(struct io_uring_sqe, cmd)))= ; \ > + (type *)(sqe)->cmd; = \ > +}) > + > +#define IO_URING_SQE_CMD(sqe, type) ({ = \ > + BUILD_BUG_ON(sizeof(type) > ((sizeof(struct io_uring_sqe)) - = \ > + offsetof(struct io_uring_sqe, cmd)))= ; \ > + (type *)(sqe)->cmd; Can we continue to return a const pointer? It would be buggy for a uring_cmd implementation to write to the the io_uring_sqe, which may live in userspace-mapped memory. Best, Caleb \ > +}) > > static inline void io_uring_cmd_private_sz_check(size_t cmd_sz) > { > -- > 2.52.0 > > From - Fri Jan 30 00:34:08 2026 X-Mozilla-Status: 0001 X-Mozilla-Status2: 00000000 Return-Path: Delivered-To: hi@josie.lol Received: from witcher.mxrouting.net by witcher.mxrouting.net with LMTP id GNxFETDbe2msVgUAYBR5ng (envelope-from ) for ; Thu, 29 Jan 2026 22:12:00 +0000 Return-path: Envelope-to: hi@josie.lol Delivery-date: Thu, 29 Jan 2026 22:12:02 +0000 Received: from tor.lore.kernel.org ([172.105.105.114]) by witcher.mxrouting.net with esmtps (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.98) (envelope-from ) id 1vlaF5-00000001WGY-3bK0 for hi@josie.lol; Thu, 29 Jan 2026 22:12:00 +0000 Received: from smtp.subspace.kernel.org (conduit.subspace.kernel.org [100.90.174.1]) by tor.lore.kernel.org (Postfix) with ESMTP id C8ABC3014C47 for ; Thu, 29 Jan 2026 22:11:58 +0000 (UTC) Received: from localhost.localdomause.py"},"toolUseID":"toolu_01AiKrceE3bb19ak6kxPSMue","parentToolUseID":"toolu_01AiKrceE3bb19ak6kxPSMue","uuid":"d2250530-1fde-40be-8697-06c16b5933d6","timestamp":"2026-02-25T18:47:35.342Z"} {"parentUuid":"d2250530-1fde-40be-8697-06c16b5933d6","isSidechain":true,"userType":"external","cwd":"/home/josie/development/personal/josiedot/place","sessionId":"5f5a2a4d-baeb-45d7-aaf0-0f4e76b5aad4","version":"2.1.52","gitBranch":"main","agentId":"aa9e7f3784dbd7d2f","slug":"flickering-herding-quail","type":"progress","data":{"type":"hook_progress","hookEvent":"PostToolUse","hookName":"PostToolUse:Read","command":"python3 ${CLAUDE_PLUGIN_ROOT}/hooks/posttooluse.py"},"parentToolUseID":"toolu_01AiKrceE3bb19ak6kxPSMue","toolUseID":"toolu_01AiKrceE3bb19ak6kxPSMue","timestamp":"2026-02-25T18:47:35.384Z","uuid":"10e77ae8-12af-4c21-a51c-509eee4d79eb"} 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{"parentUuid":"4712c746-a2f4-41ce-ae3e-074210f7629a","isSidechain":true,"userType":"external","cwd":"/home/josie/development/personal/josiedot/place","sessionId":"5f5a2a4d-baeb-45d7-aaf0-0f4e76b5aad4","version":"2.1.52","gitBranch":"main","agentId":"aa9e7f3784dbd7d2f","slug":"flickering-herding-quail","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01AiKrceE3bb19ak6kxPSMue","type":"tool_result","content":" 1→// Shared Leaflet map utilities\n 2→\n 3→const lightTiles = () => L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {\n 4→ attribution: '© OpenStreetMap',\n 5→ maxZoom: 19\n 6→});\n 7→\n 8→const darkTiles = () => L.tileLayer('https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png', {\n 9→ attribution: '© OpenStreetMap © CARTO',\n 10→ maxZoom: 19\n 11→});\n 12→\n 13→export function createMap(container, options = {}) {\n 14→ const map = L.map(container, {\n 15→ zoomControl: true,\n 16→ ...options,\n 17→ });\n 18→\n 19→ if (options.center) {\n 20→ map.setView(options.center, options.zoom || 13);\n 21→ } else {\n 22→ map.setView([40, 0], 2);\n 23→ }\n 24→\n 25→ // Track tile layers\n 26→ let currentLight = null;\n 27→ let currentDark = null;\n 28→\n 29→ function updateTiles() {\n 30→ const isDark = window.matchMedia?.('(prefers-color-scheme: dark)').matches;\n 31→\n 32→ if (isDark) {\n 33→ if (currentLight) {\n 34→ map.removeLayer(currentLight);\n 35→ currentLight = null;\n 36→ }\n 37→ if (!currentDark) {\n 38→ currentDark = darkTiles().addTo(map);\n 39→ }\n 40→ } else {\n 41→ if (currentDark) {\n 42→ map.removeLayer(currentDark);\n 43→ currentDark = null;\n 44→ }\n 45→ if (!currentLight) {\n 46→ currentLight = lightTiles().addTo(map);\n 47→ }\n 48→ }\n 49→ }\n 50→\n 51→ updateTiles();\n 52→\n 53→ const mediaQuery = window.matchMedia?.('(prefers-color-scheme: dark)');\n 54→ mediaQuery?.addEventListener('change', updateTiles);\n 55→\n 56→ // Return cleanup function\n 57→ map._cleanup = () => {\n 58→ mediaQuery?.removeEventListener('change', updateTiles);\n 59→ };\n 60→\n 61→ return map;\n 62→}\n 63→\n 64→export function destroyMap(map) {\n 65→ if (map._cleanup) {\n 66→ map._cleanup();\n 67→ }\n 68→ map.remove();\n 69→}\n 70→\n 71→export function createLocationMarker(latlng) {\n 72→ return L.marker(latlng, {\n 73→ icon: L.divIcon({\n 74→ className: 'location-marker',\n 75→ html: `\n 76→ \n 77→ \n 78→ \n 79→ \n 80→ `,\n 81→ iconSize: [40, 40],\n 82→ iconAnchor: [20, 20],\n 83→ }),\n 84→ });\n 85→}\n 86→\n 87→export function createFriendMarker(latlng, color) {\n 88→ return L.marker(latlng, {\n 89→ icon: L.divIcon({\n 90→ className: 'friend-marker',\n 91→ html: `\n 92→ \n 93→ \n 94→ \n 95→ \n 96→ `,\n 97→ iconSize: [32, 32],\n 98→ iconAnchor: [16, 16],\n 99→ }),\n 100→ });\n 101→}\n 102→\n 103→export function createAccuracyCircle(latlng, accuracy) {\n 104→ return L.circle(latlng, {\n 105→ radius: accuracy,\n 106→ color: '#bb86fc',\n 107→ fillColor: '#bb86fc',\n 108→ fillOpacity: 0.15,\n 109→ weight: 2,\n 110→ });\n 111→}\n 112→\n 113→export function formatTime(isoString) {\n 114→ const date = new Date(isoString);\n 115→ const now = new Date();\n 116→ const diffMs = now - date;\n 117→ const diffMins = Math.floor(diffMs / 60000);\n 118→\n 119→ if (diffMins < 1) return 'just now';\n 120→ if (diffMins < 60) return `${diffMins}m ago`;\n 121→\n 122→ const diffHours = Math.floor(diffMins / 60);\n 123→ if (diffHours < 24) return `${diffHours}h ago`;\n 124→\n 125→ return date.toLocaleDateString();\n 126→}\n 127→\n 128→// Color palette for friends\n 129→const COLORS = ['#bb86fc', '#03dac6', '#cf6679', '#ffb74d', '#81c784', '#64b5f6'];\n 130→let colorIndex = 0;\n 131→const colorMap = new Map();\n 132→\n 133→export function getColorForId(id) {\n 134→ if (!colorMap.has(id)) {\n 135→ colorMap.set(id, COLORS[colorIndex++ % COLORS.length]);\n 136→ }\n 137→ return colorMap.get(id);\n 138→}\n 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{"parentUuid":"c64b923f-a6a7-4187-bca3-f4c8636163ce","isSidechain":true,"userType":"external","cwd":"/home/josie/development/personal/josiedot/place","sessionId":"5f5a2a4d-baeb-45d7-aaf0-0f4e76b5aad4","version":"2.1.52","gitBranch":"main","agentId":"aa9e7f3784dbd7d2f","slug":"flickering-herding-quail","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01QWm7rCjGjBC3vLF1qKiwm8","type":"tool_result","content":" 1→const API_BASE = window.LOCATION_API_URL || 'https://live-api.josie.place';\n 2→const SITE_BASE = window.SITE_URL || 'https://josie.place';\n 3→\n 4→const ERROR_DISPLAY_MS = 5000;\n 5→const COPY_FEEDBACK_MS = 2000;\n 6→const POLLING_INTERVAL_MS = 10000;\n 7→const GEOLOCATION_TIMEOUT_MS = 10000;\n 8→\n 9→let sessionId = null;\n 10→let watchId = null;\n 11→let wakeLock = null;\n 12→let isSharing = false;\n 13→let sendInterval = null;\n 14→let authToken = null;\n 15→let authPopup = null;\n 16→\n 17→const isNative = window.Capacitor && window.Capacitor.isNativePlatform();\n 18→const CapGeolocation = isNative ? window.Capacitor.Plugins.Geolocation : null;\n 19→const CapApp = isNative ? window.Capacitor.Plugins.App : null;\n 20→const CapBrowser = isNative ? window.Capacitor.Plugins.Browser : null;\n 21→\n 22→const instanceInput = document.getElementById('instance');\n 23→const loginBtn = document.getElementById('login-btn');\n 24→const authSection = document.getElementById('auth-section');\n 25→const userSection = document.getElementById('user-section');\n 26→const userNameEl = document.getElementById('user-name');\n 27→const logoutBtn = document.getElementById('logout-btn');\n 28→const toggleBtn = document.getElementById('share-toggle');\n 29→const urlSection = document.getElementById('url-section');\n 30→const shareUrlInput = document.getElementById('share-url');"}]},"uuid":"01d62f7b-6f9a-4431-af51-716f5b631c8e","timestamp":"2026-02-25T18:47:36.313Z","sourceToolAssistantUUID":"c64b923f-a6a7-4187-bca3-f4c8636163ce"} {"parentUuid":"01d62f7b-6f9a-4431-af51-716f5b631c8e","isSidechain":true,"userType":"external","cwd":"/home/josie/development/personal/josiedot/place","sessionId":"5f5a2a4d-baeb-45d7-aaf0-0f4e76b5aad4","version":"2.1.52","gitBranch":"main","agentId":"aa9e7f3784dbd7d2f","slug":"flickering-herding-quail","message":{"model":"claude-opus-4-6","id":"msg_01J9oMeceBmVMBwenzqDLwtr","type":"message","role":"assistant","content":[{"type":"text","text":"I now have a thorough understanding of every part of the codebase. Let me produce the detailed implementation plan.\n\n---\n\n## Implementation Plan: Migrating josie.place from ActivityPub to AT Protocol (Bluesky)\n\nThis is a clean replacement (pre-launch, no data migration needed). The plan is organized into 5 phases, each self-contained and testable before moving to the next.\n\n---\n\n### Phase 0: Remove ActivityPub Code\n\nThis phase strips out all federation code, leaving a working but auth-less skeleton. The goal is to reach a clean baseline.\n\n#### 0.1 Delete backend files entirely\n\nThese files are removed wholesale:\n\n- `/home/josie/development/personal/josiedot/place/backend/src/lib/federation.cr` -- ActivityPub delivery, actor fetching, WebFinger client\n- `/home/josie/development/personal/josiedot/place/backend/src/lib/http_signature.cr` -- RSA-SHA256 HTTP Signature signing/verification\n- `/home/josie/development/personal/josiedot/place/backend/src/lib/mastodon_oauth.cr` -- Mastodon/Misskey OAuth, MiAuth, instance detection\n- `/home/josie/development/personal/josiedot/place/backend/src/models/actor.cr` -- ActivityPub Person model with RSA key generation\n- `/home/josie/development/personal/josiedot/place/backend/src/models/follow.cr` -- Follow model with Accept/Reject activity serialization\n- `/home/josie/development/personal/josiedot/place/backend/src/models/activity.cr` -- Activity struct and ActivityBuilder module\n- `/home/josie/development/personal/josiedot/place/backend/src/stores/follow_store.cr` -- Follow CRUD in SQLite\n\n#### 0.2 Remove `openssl_ext` dependency from shard.yml\n\nFile: `/home/josie/development/personal/josiedot/place/backend/shard.yml`\n\nThe `openssl_ext` dependency (line 13-14) is only used for RSA key operations in HTTP Signatures and Actor key generation. Remove it. Crystal's stdlib `openssl` is sufficient for the HTTPS client calls that AT Protocol needs.\n\n#### 0.3 Gut `actor_store.cr` -- remove AP-specific methods, keep list/share methods\n\nFile: `/home/josie/development/personal/josiedot/place/backend/src/stores/actor_store.cr`\n\nThis file is ~617 lines. It contains both AP-specific storage and the list/share/invite storage that we keep. The approach:\n\n**Remove** these methods (they reference Actor, MastodonOAuth types, and AP tables):\n- `create(actor)`, `find_by_id`, `find_by_username`, `find_by_token`, `find_local_actors`, `update(actor)`, `delete(id)`, `upsert_remote` -- all the actor CRUD (lines 37-164)\n- `actor_from_row` helper (lines 146-164)\n- `cache_remote_key`, `get_cached_key` -- remote key cache (lines 195-218)\n- `get_oauth_app`, `save_oauth_app` -- Mastodon app credentials (lines 222-242)\n- `save_oauth_state`, `get_oauth_state`, `delete_oauth_state`, `cleanup_old_oauth_states` -- OAuth state (lines 246-276)\n- `save_actor_link`, `get_actor_link`, `find_actor_by_remote`, `find_local_actor_by_remote_url`, `find_local_actor_by_remote_acct` -- Actor links (lines 280-352)\n- `run_migrations` (line 27-35) -- the is_native migration for oauth_states\n\n**Keep** all of:\n- `create_invite`, `use_invite`, `invite_valid?` (lines 168-191) -- invite code management\n- All list methods: `create_list`, `get_list`, `get_lists_for_actor`, `update_list`, `delete_list` (lines 358-