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GET /api/patches/2194231/?format=api
{ "id": 2194231, "url": "http://patchwork.ozlabs.org/api/patches/2194231/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/22296f2db9f17f9954f85de9e99b09498936eb51.1770470220.git.qemu_oss@crudebyte.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<22296f2db9f17f9954f85de9e99b09498936eb51.1770470220.git.qemu_oss@crudebyte.com>", "list_archive_url": null, "date": "2026-02-07T13:17:00", "name": "[PULL,1/1] 9pfs: local: read native symlinks when security-model=mapped", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "6ec5bb9574fbecc59fc8eb807de4ac6d77e6491c", "submitter": { "id": 77616, "url": "http://patchwork.ozlabs.org/api/people/77616/?format=api", "name": "Christian Schoenebeck", "email": "qemu_oss@crudebyte.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/22296f2db9f17f9954f85de9e99b09498936eb51.1770470220.git.qemu_oss@crudebyte.com/mbox/", "series": [ { "id": 491380, "url": "http://patchwork.ozlabs.org/api/series/491380/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=491380", "date": "2026-02-07T13:17:00", "name": "[PULL,1/1] 9pfs: local: read native symlinks when security-model=mapped", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/491380/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2194231/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2194231/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (4096-bit key;\n unprotected) header.d=crudebyte.com header.i=@crudebyte.com\n header.a=rsa-sha256 header.s=kylie header.b=P8tvRTBF;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4f7Xt919Mrz1xvh\n\tfor <incoming@patchwork.ozlabs.org>; Sun, 08 Feb 2026 01:10:39 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1voiv2-0003S1-6A; Sat, 07 Feb 2026 09:04:16 -0500", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1)\n (envelope-from\n <22296f2db9f17f9954f85de9e99b09498936eb51@kylie.crudebyte.com>)\n id 1voiuz-0003Rd-AG\n for qemu-devel@nongnu.org; Sat, 07 Feb 2026 09:04:14 -0500", "from kylie.crudebyte.com ([5.189.157.229])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1)\n (envelope-from\n <22296f2db9f17f9954f85de9e99b09498936eb51@kylie.crudebyte.com>)\n id 1voiux-0005jY-LD\n for qemu-devel@nongnu.org; Sat, 07 Feb 2026 09:04:13 -0500" ], "DKIM-Signature": "v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n d=crudebyte.com; s=kylie; h=Cc:To:Subject:Date:From:References:In-Reply-To:\n Message-ID:Content-Type:Content-Transfer-Encoding:MIME-Version:Content-ID:\n Content-Description; bh=kz874Y4LL8BIAsP3NfhIr4ERHLswagX7zKXSQF9iv3w=; b=P8tvR\n TBF5tTyGiG6uxOboCrruo8cH4pP1g8Qx+3x+DEFfIyZ3N7Ai+J9ikt4wodMl6FXqn+tI9q4RkYhJW\n Fx+RYg/B9riMCcrEycVRBudu7OLB6TSuu96l0H+Ay6p5wpELp6uuyxQIFPsVMxxgIxD8IbO17cYcA\n tyUHakrQL3+7TSRVZZJbHt7H3GSPqNfePFtOkTUr7iNmLu+gH/QZlN+17BfMkmBpj8WG4N/TkEsym\n +BLVEW5vQiSruZv7iGALc9W/c+d3cgkGMxBoM6jPEc7729IgSRkEOE897HExINDk6hNmtU4YlsrAK\n QmzFB7JzlU9TLdXxyq/fRtMuaw5BeeQQ2ge4BGh6jB/jWXmmYaK7xb4fUoYkRCiS5fYCABOoHcXdd\n E86o/V0uBLh6yB2mDa1xqzwiwfdjcv/4RE8yxOcBq63tKKs8il1TXgY3iJQsuOFTu5+yosybHuzn6\n i88xkrcIKd/j3l/7hTjtoN2t60G9eYziYttPty7pmSrV4s8Nn9hBfs55XLq0usbbS9cCg9eXhzFI+\n 2SALsS2WvHepq0XZldD7gaFGx7LsNE0qrpZ2JR23nFXWuwkhn7gx8QZIgNEjroEyq26s7IFdtqUnC\n 3PMmyaMXoeoIevxmtQd4iPb/vTzhWJqvDqV0DWhIWzsVyPREiwH5S6R05QlKjM=;", "Message-ID": "\n <22296f2db9f17f9954f85de9e99b09498936eb51.1770470220.git.qemu_oss@crudebyte.com>", "In-Reply-To": "<cover.1770470220.git.qemu_oss@crudebyte.com>", "References": "<cover.1770470220.git.qemu_oss@crudebyte.com>", "From": "Christian Schoenebeck <qemu_oss@crudebyte.com>", "Date": "Sat, 07 Feb 2026 14:17:00 +0100", "Subject": "[PULL 1/1] 9pfs: local: read native symlinks when\n security-model=mapped", "To": "qemu-devel@nongnu.org,\n Peter Maydell <peter.maydell@linaro.org>", "Cc": "Greg Kurz <groug@kaod.org>, Andrey Erokhin <language.lawyer@gmail.com>", "Received-SPF": "pass client-ip=5.189.157.229;\n envelope-from=22296f2db9f17f9954f85de9e99b09498936eb51@kylie.crudebyte.com;\n helo=kylie.crudebyte.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: Andrey Erokhin <language.lawyer@gmail.com>\n\nDirectories attached using virtfs with security-model=mapped\nmay contain native symlinks\n\nThis can happen e.g. when booting from a rootfs directory tree\n(usually with a writable overlay set up on the host side)\n\nCurrently, when security-model=mapped[-xattr|-file],\nQEMU assumes that host-side \"symlinks\" are in the mapped format,\ni.e. are regular files storing the linked path,\nso it tries to open with O_NOFOLLOW\nand fails with ELOOP on native symlinks\n\nThis patch introduces a fallback for such cases:\nreuse security-model=[none|passthrough] else if branch logic\nwhere readlink will be called for the path basename\n\nResolves: https://gitlab.com/qemu-project/qemu/-/issues/173\nSigned-off-by: Andrey Erokhin <language.lawyer@gmail.com>\nReviewed-by: Greg Kurz <groug@kaod.org>\nLink: https://lore.kernel.org/qemu-devel/3c35955d-a57e-4203-81c5-395146e23f83@gmail.com\nSigned-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>\n---\n hw/9pfs/9p-local.c | 4 ++++\n 1 file changed, 4 insertions(+)", "diff": "diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c\nindex c3745f2839..24cb1da90a 100644\n--- a/hw/9pfs/9p-local.c\n+++ b/hw/9pfs/9p-local.c\n@@ -469,12 +469,16 @@ static ssize_t local_readlink(FsContext *fs_ctx, V9fsPath *fs_path,\n \n fd = local_open_nofollow(fs_ctx, fs_path->data, O_RDONLY, 0);\n if (fd == -1) {\n+ if (errno == ELOOP) {\n+ goto native_symlink;\n+ }\n return -1;\n }\n tsize = RETRY_ON_EINTR(read(fd, (void *)buf, bufsz));\n close_preserve_errno(fd);\n } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||\n (fs_ctx->export_flags & V9FS_SM_NONE)) {\n+ native_symlink:;\n char *dirpath = g_path_get_dirname(fs_path->data);\n char *name = g_path_get_basename(fs_path->data);\n int dirfd;\n", "prefixes": [ "PULL", "1/1" ] }