From nobody Sat Jul 02 19:42:30 2022 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4298A8B1186; Sat, 2 Jul 2022 19:42:31 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Lb2XR1QbKz4ZcC; Sat, 2 Jul 2022 19:42:31 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1656790951; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=pEMM8YQkuwEGK86Rpn6vK/BERWYtNmanzDIyEAD5zX8=; b=e9P3rlTr/IdLc52ATXvtdcyKMcE/UT7+ZSfenUvZZI02BxcNxk2CtNrasWZZfg7ZGOf/NM vhtCRQCisiSrafabwpbU068wTn3LiX0AbmLCPSZ+GQgE3JVA7uQDn09tbt/h/kH9/XjuH8 k6/+4+kYlP7SyTx6h5AYpJA1kS1V2kMPrqm7dMDh0boH6oFqqwjVfucBcqJdxYhoC7kxay r5V+LVWTy4xz1zdxKlp2xtphrC1GA5gq7LiEOO8IchCc7mLrhV8wHpbWGoJmgMl/LtAMGs hVOH/KN04TSTWATdJnow22HNdd9sSBLc9WLLc6xxEa/Tj6jv7ym6lJT2HnLZnw== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 10F55164BB; Sat, 2 Jul 2022 19:42:31 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 262JgUnx097464; Sat, 2 Jul 2022 19:42:30 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 262JgUox097463; Sat, 2 Jul 2022 19:42:30 GMT (envelope-from git) Date: Sat, 2 Jul 2022 19:42:30 GMT Message-Id: <202207021942.262JgUox097463@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Warner Losh Subject: git: ef86876b846e - main - pselect(2): Document what a null pointer for the signalmask means List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: imp X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: ef86876b846e523e7ccc2940c37db4279db95d05 Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1656790951; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=pEMM8YQkuwEGK86Rpn6vK/BERWYtNmanzDIyEAD5zX8=; b=Lmy6MV7ey5BJmr00bLWhmhZt1VIFezFhxb5RY5kVHCtfyIgssPFff9h0U5AWDdFyJOJACj fVnEeDiPXyrC5UUb76xAujs+JHbReLC4YUjxMYZP+eFQIZfRglNItSjvBra6MCcmUxMcJD 0LX/L2bGYZVUkRKP6c9TSwo0scTqs0O3/s4phm2xDAH8sbVk+pS8YCaxUVdskE0ezr4vBD 3oQcmkIcAGMk4OkTyjKbep33MLpUQNPrVOuQyN7Xs9Xop1k+8ldD45m5pnqXtRNJrVQvSm dgPeQ2iOnY9J66+/NxKStWLhTxzvycHHyk0B1nmUz3y+yHsU7/o8niG4ua1rsw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1656790951; a=rsa-sha256; cv=none; b=uKAOcDW4TiqUgR8hjTHa6zhsRj5U3nYIREB2Z0ebLnAfUxbYrIjnAZYzV0vb08TRsk/34j 97g5YZU7DBVXuz+uz+CKgSqaMcm63y6vJe+lyHud7VtPxtb5gFwJaF7typHurFFcjT+GiH ETUZj40Bm5LNa4Ox0NOgwpdvzuM0Yv4PuzF3rUeZwDQ9bHbgtLlHqymBGFezC9aFklqGYC OioELxn1T5V1g8XJqrjf5SkIUVWPILAhj+d7QdZvB7JFozMYFNWuZ/InLb7x+7RTPSCfxr b3Ff53+sK1P4Bbal3D+Z/U7SxERVKEQG1f/zqteA7KW+gu9McLdHmOqqkY6p+Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by imp: URL: https://cgit.FreeBSD.org/src/commit/?id=ef86876b846e523e7ccc2940c37db4279db95d05 commit ef86876b846e523e7ccc2940c37db4279db95d05 Author: Warner Losh AuthorDate: 2022-07-02 19:39:24 +0000 Commit: Warner Losh CommitDate: 2022-07-02 19:41:46 +0000 pselect(2): Document what a null pointer for the signalmask means When pselect is passed a null pointer for the signal mask, the standard says it shall behave like select (except for the different timeout arg). Make a note of that here. Sponsored by: Netflix --- lib/libc/sys/pselect.2 | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/lib/libc/sys/pselect.2 b/lib/libc/sys/pselect.2 index 6221c473e7d7..c8104b936319 100644 --- a/lib/libc/sys/pselect.2 +++ b/lib/libc/sys/pselect.2 @@ -28,7 +28,7 @@ .\" .\" $FreeBSD$ .\" -.Dd August 16, 2013 +.Dd July 2, 2022 .Dt PSELECT 2 .Os .Sh NAME @@ -66,7 +66,7 @@ argument in .Fn pselect points to a .Vt "const struct timespec" -rather than the (modifiable) +rather than the potentially modifiable .Vt "struct timeval" used by .Fn select ; @@ -81,6 +81,13 @@ specifies a signal mask which is set while waiting for input. When .Fn pselect returns, the original signal mask is restored. +If +.Fa newsigmask +is a null pointer, +.Fn pselect +behaves like +.Fn select +with no setting or restoration of the signal mask. .Pp See .Xr select 2