From owner-freebsd-hackers@freebsd.org Sat Jan 4 09:23:00 2020 Return-Path: Delivered-To: freebsd-hackers@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id BEF201D213B for ; Sat, 4 Jan 2020 09:23:00 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 47qbsb1T1tz42yj for ; Sat, 4 Jan 2020 09:22:58 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (v-critter.freebsd.dk [192.168.55.3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by phk.freebsd.dk (Postfix) with ESMTPS id A94731AF135; Sat, 4 Jan 2020 09:22:51 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.15.2/8.15.2) with ESMTPS id 0049MovY036242 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 4 Jan 2020 09:22:51 GMT (envelope-from phk@critter.freebsd.dk) Received: (from phk@localhost) by critter.freebsd.dk (8.15.2/8.15.2/Submit) id 0049Mobg036241; Sat, 4 Jan 2020 09:22:50 GMT (envelope-from phk) To: Matthias Apitz cc: freebsd-hackers@freebsd.org Subject: Re: getting the name of a C-function in the C-code based on a pointer to the function In-reply-to: <20200104090743.GA3017@c720-r342378> From: "Poul-Henning Kamp" References: <20200104090743.GA3017@c720-r342378> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <36239.1578129770.1@critter.freebsd.dk> Content-Transfer-Encoding: quoted-printable Date: Sat, 04 Jan 2020 09:22:50 +0000 Message-ID: <36240.1578129770@critter.freebsd.dk> X-Rspamd-Queue-Id: 47qbsb1T1tz42yj X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of phk@critter.freebsd.dk designates 130.225.244.222 as permitted sender) smtp.mailfrom=phk@critter.freebsd.dk X-Spamd-Result: default: False [-1.92 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.99)[-0.992,0]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; NEURAL_HAM_LONG(-0.97)[-0.972,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[freebsd.dk]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; IP_SCORE(0.05)[ip: (0.07), ipnet: 130.225.0.0/16(0.07), asn: 1835(0.09), country: EU(-0.00)]; FORGED_SENDER(0.30)[phk@phk.freebsd.dk,phk@critter.freebsd.dk]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:1835, ipnet:130.225.0.0/16, country:EU]; FROM_NEQ_ENVFROM(0.00)[phk@phk.freebsd.dk,phk@critter.freebsd.dk]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 Jan 2020 09:23:00 -0000 -------- In message <20200104090743.GA3017@c720-r342378>, Matthias Apitz writes: >What I'm locking for is how to get the name of a function, into a string = pointer See dlsym(3) and/or backtrace(3) -- = Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe = Never attribute to malice what can adequately be explained by incompetence= .