{"id":2223427,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2223427/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/patch/20260415103812.21999-2-wegao@suse.com/","project":{"id":59,"url":"http://patchwork.ozlabs.org/api/1.2/projects/59/?format=json","name":"Linux Test Project development","link_name":"ltp","list_id":"ltp.lists.linux.it","list_email":"ltp@lists.linux.it","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260415103812.21999-2-wegao@suse.com>","list_archive_url":null,"date":"2026-04-15T10:37:54","name":"[v7,1/2] lib: New library function tst_get_free_uid","commit_ref":null,"pull_url":null,"state":"needs-review-ack","archived":false,"hash":"5922c9562177c84a0f80be67393323111339f9b3","submitter":{"id":85577,"url":"http://patchwork.ozlabs.org/api/1.2/people/85577/?format=json","name":"Wei Gao","email":"wegao@suse.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/ltp/patch/20260415103812.21999-2-wegao@suse.com/mbox/","series":[{"id":499962,"url":"http://patchwork.ozlabs.org/api/1.2/series/499962/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/list/?series=499962","date":"2026-04-15T10:37:54","name":"[v7,1/2] lib: New library function tst_get_free_uid","version":7,"mbox":"http://patchwork.ozlabs.org/series/499962/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2223427/comments/","check":"warning","checks":"http://patchwork.ozlabs.org/api/patches/2223427/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=lists.linux.it header.i=@lists.linux.it\n header.a=rsa-sha256 header.s=picard header.b=K6pHz2Zu;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=suse.com header.i=@suse.com header.a=rsa-sha256\n header.s=google header.b=AhGPfzyN;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=213.254.12.146; helo=picard.linux.it;\n envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it;\n receiver=patchwork.ozlabs.org)"],"Received":["from picard.linux.it (picard.linux.it [213.254.12.146])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fwd0h1BBSz1yCv\n\tfor ; Wed, 15 Apr 2026 20:38:44 +1000 (AEST)","from picard.linux.it (localhost [IPv6:::1])\n\tby picard.linux.it (Postfix) with ESMTP id 331D53E5DB9\n\tfor ; Wed, 15 Apr 2026 12:38:42 +0200 (CEST)","from in-3.smtp.seeweb.it (in-3.smtp.seeweb.it [217.194.8.3])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature ECDSA (secp384r1))\n (No client certificate requested)\n by picard.linux.it (Postfix) with ESMTPS id 4B9C43E5B63\n for ; Wed, 15 Apr 2026 12:38:18 +0200 (CEST)","from mail-wm1-x332.google.com (mail-wm1-x332.google.com\n [IPv6:2a00:1450:4864:20::332])\n (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by in-3.smtp.seeweb.it (Postfix) with ESMTPS id 4FA001A00143\n for ; Wed, 15 Apr 2026 12:38:17 +0200 (CEST)","by mail-wm1-x332.google.com with SMTP id\n 5b1f17b1804b1-488a88aeec9so88191215e9.2\n for ; Wed, 15 Apr 2026 03:38:17 -0700 (PDT)","from localhost ([2a07:de40:b240:0:2ad6:ed42:2ad6:ed42])\n by smtp.gmail.com with UTF8SMTPSA id\n 5b1f17b1804b1-488ede1513csm132925875e9.2.2026.04.15.03.38.16\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Wed, 15 Apr 2026 03:38:16 -0700 (PDT)"],"DKIM-Signature":["v=1; a=rsa-sha256; c=relaxed/simple; d=lists.linux.it;\n i=@lists.linux.it; q=dns/txt; s=picard; t=1776249522; h=to : date :\n message-id : in-reply-to : references : mime-version : subject :\n list-id : list-unsubscribe : list-archive : list-post : list-help :\n list-subscribe : from : reply-to : content-type :\n content-transfer-encoding : sender : from;\n bh=CW7OrP7WiIAbSO2ZrN0BAtBMohc0i7ydsJRF5dh/TSI=;\n b=K6pHz2ZubN++8IwnJCENS9QAq09GwzYQ2JnHtIjUKRjHqbFcXtFBi1WkmNgRjGWhKVZRe\n 7Rou3f/RXMknnUA7MtjTgcn1aMu5a8nNlmvKOEidG3gAXbT3KaFg26MpZsqwfrDD8f3MunR\n KV708ygD5lUpeNL21cdkjhAfiZ81Hww=","v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=suse.com; s=google; t=1776249496; x=1776854296; darn=lists.linux.it;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:cc:to:from:from:to:cc:subject:date\n :message-id:reply-to;\n bh=IXG96hzdr8AsF7J2pEPmsFfr2LG6zdtRgzLGip5/aw0=;\n b=AhGPfzyNgK5F7NFUTUjW/8wwECmupNe4vB5qOmqIekdg3XcMOJnh1pQMWUufeDPx9X\n 6EOVPAVgfs4cWR4zkiY1mfXMM/QyTVkwTf545cT5HrjjZ7b842xifwl+CgqX9mu+qELc\n CcVWH5AdKtQ+hcJBQJ8BKu3qRcWKKzw9AHMgWljantObfetHC8YVJheawUZxv4oc91Dr\n xwUlovYUFCgv+Q4dV7GZr6kCB14QmkRmYZ7gdvpj8MqVPHIMv83CZSSxkTmmhiIg7LCF\n CntloyqKRAJwBdUiNl2/IBukheUdvkLx6ZBZYhC4ykixIy5BnP0C0KCp++0WapfMYSCU\n uVSQ=="],"X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1776249496; x=1776854296;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from\n :to:cc:subject:date:message-id:reply-to;\n bh=IXG96hzdr8AsF7J2pEPmsFfr2LG6zdtRgzLGip5/aw0=;\n b=HtzsV+arF/38NsHr5ADXVU7qWSVsl3Prs+DNYzlpMS6xLddfVP+l9csmRiHigj1KLh\n nhT+JC59SY+As2AtD4Qkz6yG1usUiFgHm6fiEzvOM6EE1lQ4s9/uqSbXxRSzYeG9XxGo\n +5yTViqgNMI8u7n0xlQUMQeQyfLPFeFCRtC2FfHsGqcn94AOBXNZbu1g9tUWFsdpwGix\n ZQxSbin6Tn5T3ddCLWKOtm98Z/5V2whS7f6OCE52oJSKNChSjC0aVR71KKPvHkSvA8uH\n nCYOdRew/nXA8mQ0w+K0dW80ipqgvfqfAlurW2uobCwRT95oxlGCfRwRT+EUy1X27bqJ\n DO/Q==","X-Gm-Message-State":"AOJu0YyPEFAViL4elWYrknAwwLEsCtZIhOat2sikl03a5j0Pp3N9tDSs\n M8iDzolzVpBvrCZXszCA3HBg1cRxC1wKzm0DnMumGKtE9fiI66uMh0uWZmXBJNOmeZN4jjULma5\n QVbU=","X-Gm-Gg":"AeBDies1XKZgyZ9KDO6SXkh+and/ZadxfGOGg7AEO+sp+C9eZS94XQGhUN79JeYOi79\n udj3gKJFwIgJChKc0/XjnrNawBJ9lrxULrsTIhyGHflHHwnK7iVR3JBBY5s8gLwGhrFm0b5Z6OO\n DuYroV/+6QNiq1snjt71jp+6BSubb8h/bwzuf47URfNA0yB8S2rvadGKr/SiV52ACb+H1HhvxGn\n SdED5P7dRDI93+1wpMJDbFzeYr0c9Q6Gdia1WE+2o1QUSChlNAO8CS2A179+13l7JhxIqNv8piT\n 9rl4c0uH4QiaOHwrnThixr6IUTw+/kBuCtVSZQ2YDesoTBQe5LAB2O7V1WUg/3Omrt8iK+Ml322\n 1J7wjN9nl0JQuiP1OQR1l9ESQCJlLw6/E5oYKpEMhqeDL4zjDtH6m/P85l4/QApzfMfuM6AmZDC\n V3LQbFGZLIUEP5uavfDRnlEA==","X-Received":"by 2002:a05:600c:528f:b0:488:a82f:bbb4 with SMTP id\n 5b1f17b1804b1-488d689d0b8mr283477635e9.26.1776249496433;\n Wed, 15 Apr 2026 03:38:16 -0700 (PDT)","To":"ltp@lists.linux.it","Date":"Wed, 15 Apr 2026 10:37:54 +0000","Message-ID":"<20260415103812.21999-2-wegao@suse.com>","X-Mailer":"git-send-email 2.43.0","In-Reply-To":"<20260415103812.21999-1-wegao@suse.com>","References":"<20260415060728.21662-1-wegao@suse.com>\n <20260415103812.21999-1-wegao@suse.com>","MIME-Version":"1.0","X-Spam-Status":"No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID,\n DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS shortcircuit=no\n autolearn=disabled version=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on in-3.smtp.seeweb.it","X-Virus-Scanned":"clamav-milter 1.0.9 at in-3.smtp.seeweb.it","X-Virus-Status":"Clean","Subject":"[LTP] [PATCH v7 1/2] lib: New library function tst_get_free_uid","X-BeenThere":"ltp@lists.linux.it","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"Linux Test Project ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","From":"Wei Gao via ltp ","Reply-To":"Wei Gao ","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it","Sender":"\"ltp\" "},"content":"Add tst_get_free_uid() to dynamically find unused UIDs for tests.\n\nSigned-off-by: Wei Gao \n---\n include/tst_uid.h | 7 +++++--\n lib/tst_uid.c | 26 ++++++++++++++++++++++++++\n 2 files changed, 31 insertions(+), 2 deletions(-)","diff":"diff --git a/include/tst_uid.h b/include/tst_uid.h\nindex 2237ddcbf..394cb3edc 100644\n--- a/include/tst_uid.h\n+++ b/include/tst_uid.h\n@@ -8,10 +8,13 @@\n #include \n \n /*\n- * Find unassigned gid. The skip argument can be used to ignore e.g. the main\n+ * Find unassigned uid/gid. The skip argument can be used to ignore e.g. the main\n * group of a specific user in case it's not listed in the group file. If you\n- * do not need to skip any specific gid, simply set it to 0.\n+ * do not need to skip any specific id, simply set it to 0.\n */\n+uid_t tst_get_free_uid_(const char *file, const int lineno, uid_t skip);\n+#define tst_get_free_uid(skip) tst_get_free_uid_(__FILE__, __LINE__, (skip))\n+\n gid_t tst_get_free_gid_(const char *file, const int lineno, gid_t skip);\n #define tst_get_free_gid(skip) tst_get_free_gid_(__FILE__, __LINE__, (skip))\n \ndiff --git a/lib/tst_uid.c b/lib/tst_uid.c\nindex af4ef8cf7..deff17085 100644\n--- a/lib/tst_uid.c\n+++ b/lib/tst_uid.c\n@@ -5,6 +5,7 @@\n \n #include \n #include \n+#include \n #include \n \n #define TST_NO_DEFAULT_MAIN\n@@ -12,6 +13,31 @@\n #include \"tst_uid.h\"\n \n #define MAX_GID 32767\n+#define MAX_UID 32767\n+\n+uid_t tst_get_free_uid_(const char *file, const int lineno, uid_t skip)\n+{\n+\tuid_t ret;\n+\n+\terrno = 0;\n+\n+\tfor (ret = 1; ret < MAX_UID; ret++) {\n+\t\tif (ret == skip || getpwuid(ret))\n+\t\t\tcontinue;\n+\n+\t\tif (errno == 0 || errno == ENOENT || errno == ESRCH) {\n+\t\t\ttst_res_(file, lineno, TINFO | TERRNO,\n+\t\t\t\t\"Found unused UID %d\", (int)ret);\n+\t\t\treturn ret;\n+\t\t}\n+\n+\t\ttst_brk_(file, lineno, TBROK|TERRNO, \"User ID lookup failed\");\n+\t\treturn (uid_t)-1;\n+\t}\n+\n+\ttst_brk_(file, lineno, TBROK, \"No free user ID found\");\n+\treturn (uid_t)-1;\n+}\n \n gid_t tst_get_free_gid_(const char *file, const int lineno, gid_t skip)\n {\n","prefixes":["v7","1/2"]}