From owner-freebsd-current@freebsd.org Tue Mar 12 21:52:30 2019 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 41945153FC93 for ; Tue, 12 Mar 2019 21:52:30 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: from mail-it1-x12e.google.com (mail-it1-x12e.google.com [IPv6:2607:f8b0:4864:20::12e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4301787F2D for ; Tue, 12 Mar 2019 21:52:29 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: by mail-it1-x12e.google.com with SMTP id e24so7043227itl.1 for ; Tue, 12 Mar 2019 14:52:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=BZPf2tgLQdGlNcQgWrgZ1AkeGKh04+HvxKq9YZSakJc=; b=vYMv/Gli7jtAcm0/RhRo0ZAxutc8JW/DL5cSbvuz4+WCKCt4pg0WXmZ2mO1n46MATK 2qXbnSSXjqIf9mYBd5DENDiPgTCq5qlBuwNGlJNP5NWcTZOcbswaXYm9K+gKeH2v0xEJ howJnFrFVEZg2rYWELP3RNdWn6o7hAWz05I80NTh3D2dZVA8KWzS79EB8V5B3xSHFubb jSEwlf8RGOnG1ce8VNDklz0Xv6QWgkuPAkyr2refZI4aN5FF7N7rcPW2vWZOy5/mHajY UeefnEwBoa2sYib8g8999UQ1OF7BdSZomCr0pttpel5D4CtMLG9ppbiqVqmpaTQR+QFF fvcg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=BZPf2tgLQdGlNcQgWrgZ1AkeGKh04+HvxKq9YZSakJc=; b=qSLh9rX0jZ/yo6Dw54R5WE+Mx16llAD46prw13BY1VaNxUh6cHKbdyhCJRA/RH4iFA q3pecL3CZQUUHsssizEtzfOR5buZ8RGnADc7yQj1Gf4tkvz2MqFleKjIvBZt9KJPLdQB 5yu40pndYA3+A20mjJY+K9iaqT9SmLwRT0/dgqhnF1dbUODALyCN7HG4nMDuGzwimJua 6uCwtSm+0MEgL4b84SDwHbwYhugd6X6qbD99+PdzPodl22aIOz2AP71cyskKR56hHc0U shlJKgse8Pz7DDG5eKFsLhOo4qvV+DskUN4XhYpddAcasBUOr9eA60N8h/OABFmDJEQR Zdwg== X-Gm-Message-State: APjAAAUa6691uUccL902rNOig+FFv8l9CqT53qE75rbZU8KJVUbXlubu jPZz7rKnbCoR576r3Q7erw5VX8mR X-Google-Smtp-Source: APXvYqwkkH72yWk5Crb0Q3nB8EW7pF525cUohKunCjAGBpajYH+rYr+fo1+lLlNJdBw1vL2MhlFucg== X-Received: by 2002:a24:eb0e:: with SMTP id h14mr3449140itj.100.1552427548451; Tue, 12 Mar 2019 14:52:28 -0700 (PDT) Received: from raichu (toroon0560w-lp140-01-69-159-36-102.dsl.bell.ca. [69.159.36.102]) by smtp.gmail.com with ESMTPSA id t74sm911689itb.11.2019.03.12.14.52.27 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 12 Mar 2019 14:52:27 -0700 (PDT) Sender: Mark Johnston Date: Tue, 12 Mar 2019 17:52:25 -0400 From: Mark Johnston To: Larry Rosenman Cc: Freebsd current , Aki Tuomi Subject: Re: kqueue send over unix socket? Message-ID: <20190312215225.GE78920@raichu> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.3 (2019-02-01) X-Rspamd-Queue-Id: 4301787F2D X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=vYMv/Gli; spf=pass (mx1.freebsd.org: domain of markjdb@gmail.com designates 2607:f8b0:4864:20::12e as permitted sender) smtp.mailfrom=markjdb@gmail.com X-Spamd-Result: default: False [-4.38 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_ALL(0.00)[]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; DKIM_TRACE(0.00)[gmail.com:+]; NEURAL_HAM_SHORT(-0.97)[-0.969,0]; FORGED_SENDER(0.30)[markj@freebsd.org,markjdb@gmail.com]; IP_SCORE(-2.70)[ip: (-8.63), ipnet: 2607:f8b0::/32(-2.75), asn: 15169(-2.08), country: US(-0.07)]; SUBJECT_ENDS_QUESTION(1.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; MIME_TRACE(0.00)[0:+]; FROM_NEQ_ENVFROM(0.00)[markj@freebsd.org,markjdb@gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-current@freebsd.org]; DMARC_NA(0.00)[freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[e.2.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; RCVD_TLS_LAST(0.00)[]; MID_RHS_NOT_FQDN(0.50)[] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Mar 2019 21:52:30 -0000 On Tue, Mar 12, 2019 at 04:10:19PM -0500, Larry Rosenman wrote: > I'm working with Aki Tuomi of Dovecot and he asks: > > I tried to ask if you could ask from some Kernel hacker why I cannot > send kqueue() fd over unix socket, I get "Operation not supported". > > Can anyone help me? What exactly do you want to know? Events registered on a kqueue may contain state associated with the process that registered them. For example, the identifier for some events is a file descriptor, but different processes generally don't share their file descriptor tables. Note that kqueue descriptors are not inherited by the child of a fork() either.