{"id":2221093,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2221093/?format=json","web_url":"http://patchwork.ozlabs.org/project/uclibc-ng/patch/20260408190035.2759806-2-cmirabil@redhat.com/","project":{"id":55,"url":"http://patchwork.ozlabs.org/api/1.1/projects/55/?format=json","name":"uClibc NG development","link_name":"uclibc-ng","list_id":"devel.uclibc-ng.org","list_email":"devel@uclibc-ng.org","web_url":"http://www.uclibc-ng.org","scm_url":"","webscm_url":"http://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git"},"msgid":"<20260408190035.2759806-2-cmirabil@redhat.com>","date":"2026-04-08T19:00:29","name":"[uclibc-ng-devel,v1,1/7] pipe: directly invoke pipe2 from kernel when !UCLIBC_LINUX_SPECIFIC","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"6d37fd45ff23e0451f1cf7e1b5316743233724d6","submitter":{"id":82370,"url":"http://patchwork.ozlabs.org/api/1.1/people/82370/?format=json","name":"Charles Mirabile","email":"cmirabil@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/uclibc-ng/patch/20260408190035.2759806-2-cmirabil@redhat.com/mbox/","series":[{"id":499191,"url":"http://patchwork.ozlabs.org/api/1.1/series/499191/?format=json","web_url":"http://patchwork.ozlabs.org/project/uclibc-ng/list/?series=499191","date":"2026-04-08T19:00:29","name":"Bug fixes discovered trying to build allnoconfig","version":1,"mbox":"http://patchwork.ozlabs.org/series/499191/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2221093/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2221093/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=gsOPa2jb;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=uclibc-ng.org\n (client-ip=89.238.66.15; 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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n\ts=mimecast20190719; t=1775674845;\n\th=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n\t to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n\t content-transfer-encoding:content-transfer-encoding:\n\t in-reply-to:in-reply-to:references:references;\n\tbh=fdcrDfg03Q7HLE4fe8fCI0bjdLDBp/t09hxuA2N2J3w=;\n\tb=gsOPa2jbxnkYoWIPiYSYL7vGd4uLWLIYCx1L0n/uRCxoaPvS5Qc8D9rJ8sueZ7ZygQLEr9\n\tpHrw0AVKBvQEaOI7+FrWfkoUBieKAB6dVJU5eEIBwolgdvJqxVH2IMx1GlKf1pPRRs+kII\n\ttnjFaVTs9Ybu3o3SBQQAYncpWmkrn7g=","X-MC-Unique":"NZa1BjtQMHqH8XkiKd0GKQ-1","X-Mimecast-MFC-AGG-ID":"NZa1BjtQMHqH8XkiKd0GKQ_1775674842","From":"Charles Mirabile ","To":"devel@uclibc-ng.org","Date":"Wed, 8 Apr 2026 15:00:29 -0400","Message-ID":"<20260408190035.2759806-2-cmirabil@redhat.com>","In-Reply-To":"<20260408190035.2759806-1-cmirabil@redhat.com>","References":"<20260408190035.2759806-1-cmirabil@redhat.com>","MIME-Version":"1.0","X-Scanned-By":"MIMEDefang 3.4.1 on 10.30.177.4","X-Mimecast-Spam-Score":"0","X-Mimecast-MFC-PROC-ID":"f1neUNAD8qonmDLGOG2C_HYkIX5vauZU8-H1UwhVxKk_1775674842","X-Mimecast-Originator":"redhat.com","Message-ID-Hash":"GTUUJRRQODDR46NYV2USZMRTIWLEUHTD","X-Message-ID-Hash":"GTUUJRRQODDR46NYV2USZMRTIWLEUHTD","X-MailFrom":"cmirabil@redhat.com","X-Mailman-Rule-Misses":"dmarc-mitigation; no-senders; approved; loop;\n banned-address; emergency; member-moderation; nonmember-moderation;\n administrivia; implicit-dest; max-recipients; max-size; news-moderation;\n no-subject; digests; suspicious-header","CC":"Charles Mirabile ","X-Mailman-Version":"3.3.10","Precedence":"list","Subject":"[uclibc-ng-devel] [PATCH v1 1/7] pipe: directly invoke pipe2 from\n kernel when\n !UCLIBC_LINUX_SPECIFIC","List-Id":"uClibc-ng Development ","Archived-At":"\n ","List-Archive":"\n ","List-Help":"","List-Owner":"","List-Post":"","List-Subscribe":"","List-Unsubscribe":"","Content-Type":"text/plain; charset=\"us-ascii\"; x-default=\"true\"","Content-Transfer-Encoding":"7bit"},"content":"As recognized in dde074b39 some linux architectures only provide `pipe2`\neven though only `pipe` is specified by POSIX. Fortunately `pipe2` can\nstand in for `pipe` by passing flags of zero. Unfortunately the uclibc\ndefinition of `pipe2` is gated behind `UCLIBC_LINUX_SPECIFIC`. When\ncompiling with that config set to `n` (e.g. allnoconfig) we get a build\nerror when trying to call the function. Instead, just directly invoke\nthe syscall from the kernel via `INLINE_SYSCALL` when falling back to\n`pipe2` for implementing `pipe` on architectures without `__NR_pipe`.\n\nFixes: dde074b39 (\"pipe: Use pipe2 if arch does not have the pipe syscall\")\nSigned-off-by: Charles Mirabile \n---\n libc/sysdeps/linux/common/pipe.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)","diff":"diff --git a/libc/sysdeps/linux/common/pipe.c b/libc/sysdeps/linux/common/pipe.c\nindex d0809f074..15063e5c5 100644\n--- a/libc/sysdeps/linux/common/pipe.c\n+++ b/libc/sysdeps/linux/common/pipe.c\n@@ -13,7 +13,7 @@\n #if defined __NR_pipe2 && !defined __NR_pipe\n int pipe(int filedes[2])\n {\n-\treturn pipe2(filedes, 0);\n+\treturn INLINE_SYSCALL(pipe2, 2, filedes, 0);\n }\n /* If both are defined then use the pipe syscall */\n #else\n","prefixes":["uclibc-ng-devel","v1","1/7"]}