From sacadmin Wed Jan 28 13:41:09 2009 Received: from chaz.sfbay.sun.com (chaz.SFBay.Sun.COM [129.146.228.120]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n0SLf9j2002801; Wed, 28 Jan 2009 13:41:09 -0800 (PST) Received: from chaz.sfbay.sun.com (localhost [127.0.0.1]) by chaz.sfbay.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n0SLfBS4023813; Wed, 28 Jan 2009 13:41:11 -0800 (PST) Received: (from rie@localhost) by chaz.sfbay.sun.com (8.14.3+Sun/8.14.3/Submit) id n0SLfBp0023787; Wed, 28 Jan 2009 13:41:11 -0800 (PST) Date: Wed, 28 Jan 2009 13:41:11 -0800 (PST) From: Rod Evans Message-Id: <200901282141.n0SLfBp0023787@chaz.sfbay.sun.com> To: PSARC-record@sac.sfbay.sun.com Subject: dlinfo(3c) - segment mapping retrieval [PSARC/2009/054 Self Review] Status: RO Content-Length: 568 Template Version: @(#)sac_nextcase %I% %G% SMI This information is Copyright 2009 Sun Microsystems 1. Introduction 1.1. Project/Component Working Name: dlinfo(3c) - segment mapping retrieval 1.2. Name of Document Author/Supplier: Author: Rod Evans 1.3 Date of This Document: 28 January, 2009 4. Technical Description See the case directory for more detail 6. Resources and Schedule 6.4. Steering Committee requested information 6.4.1. Consolidation C-team Name: OSNet 6.5. ARC review type: Automatic 6.6. ARC Exposure: open From sacadmin Wed Jan 28 13:43:05 2009 Received: from jurassic-x4600.sfbay.sun.com (cretaceous.SFBay.Sun.COM [129.146.17.59]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n0SLh5kb002845 for ; Wed, 28 Jan 2009 13:43:05 -0800 (PST) Received: from [129.146.228.120] (chaz.SFBay.Sun.COM [129.146.228.120]) by jurassic-x4600.sfbay.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n0SLh3Za451549; Wed, 28 Jan 2009 13:43:03 -0800 (PST) Message-ID: <4980D16B.403@sun.com> Date: Wed, 28 Jan 2009 13:43:07 -0800 From: Rod Evans Reply-To: Rod.Evans@sun.com Organization: Sun Microsystems Inc. User-Agent: Thunderbird 2.0.0.18 (X11/20081215) MIME-Version: 1.0 To: psarc@sac.sfbay.sun.com, psarc-ext@sun.com Subject: 2009/054: dlinfo(3c) - segment mapping retrieval Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Status: RO Content-Length: 4215 ------------------------------------------------------------------------ I'm sponsoring the following case for myself. This case qualifies for Architectural self-review, but I wish to record the following information. ------------------------------------------------------------------------ A request has been made for ld.so.1 to return an objects segment mapping information. This method of obtaining the data would be more light weight than having to go through things like /proc. 6237063 request extension to dl* family to provide segment bounds information With the approach of mmapobj(2), this request was put on hold, so that we could return a public/consistent data structure. mmapobj(2) has integrated, and ld.so.1 now uses it(6686372). dlinfo() will return mmapobj_result_t data by using two new flags: > #define RTLD_DI_MMAPS 12 /* obtain objects mappings or */ > #define RTLD_DI_MMAPCNT 13 /* mapping count */ An auxiliary structure is used to maintain the data: > typedef struct { > uint_t dlm_cnt; /* number of mapings */ > mmapobj_result_t *dlm_maps; /* mapping information */ > } Dl_mapinfo_t; The user will first determine the number of mappings using a RTLD_DI_MMAPCNT request, and then provide the appropriate buffer to a RTLD_DI_MMAPS request. This model follows the RTLD_DI_SERINFOSIZE/RTLD_DI_SERINFO model, approved with PSARC/2000/164 (bug id 4239213). ------------------------------------------------------------------------ Standard C Library Functions dlinfo(3C) ..... RTLD_DI_MMAPCNT Initialize a Dl_mapinfo_t structure for the handle that is specified, for use in a RTLD_DI_MMAPS request. The p argument is a Dl_mapinfo_t pointer (Dl_mapinfo_t *p). On return from a RTLD_DI_MMAPCNT request, the dlm_cnt member indicates the number of segment mappings that the associated object uses. To obtain the complete mapping information for an object, a mmapobj_result_t array for dlm_cnt entries must be allocated and assigned to the dlm_maps member. This initialized structure is then passed to a RTLD_DI_MMAPS request. See EXAMPLES. RTLD_DI_MMAPS Obtain segment mapping information for the handle that is specified. The p argument is a Dl_mapinfo_t pointer (Dl_mapinfo_t *p). This structure must be initialized from a previous RTLD_DI_MMAPCNT request. Segment mapping information is provided in an array of mmapobj_result_t structures that originate from the mma- pobj(2) of the associated object. The dlm_cnt member from a previous RTLD_DI_MMAPCNT request must be used to allocate a mmapobj_result_t array. This array should be assigned to the dlm_maps member. This initialized struc- ture is then passed to a RTLD_DI_MMAPS request, where the segment mapping information is copied to the allo- cated mmapobj_result_t array. See EXAMPLES. ..... Example 2: Use dlinfo() to obtain segment information. The following example demonstrates how a dynamic object can inspect its segment mapping information. For simplicity, error checking has been omitted Dl_mapinfo_t mi; uint_t cnt; /* determine the number of segment mappings */ dlinfo(RTLD_SELF, RTLD_DI_MMAPCNT, &mi); /* allocate the appropriate mapping array */ mi.dlm_maps = malloc(mi.dlm_cnt * sizeof (mmapobj_result_t)); /* obtain the mapping information */ dlinfo(RTLD_SELF, RTLD_DI_MMAPS, &mi); for (cnt = 0; cnt < mi.dlm_cnt; cnt++) { (void) printf("addr=%x - memory size=%x\n", mi.dlm_maps[cnt].mr_addr, mi.dlm_maps[cnt].mr_msize); } ------------------------------------------------------------------------ Release binding: Patch/Micro dlfcn.h: Dl_mapinfo_t Committed. RTLD_DI_SERINFO Committed. RTLD_DI_SERINFOSIZE Committed. -- Rod. From Rod.Evans@Sun.COM Wed Jan 28 13:43:07 2009 Received: from sunmail2sca.sfbay.sun.com (sunmail2sca.SFBay.Sun.COM [129.145.155.234]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n0SLh7cr002849 for ; Wed, 28 Jan 2009 13:43:07 -0800 (PST) Received: from nwk-avmta-1.SFBay.Sun.COM (nwk-avmta-1.SFBay.Sun.COM [129.146.11.74]) by sunmail2sca.sfbay.sun.com (8.13.7+Sun/8.13.7/ENSMAIL,v2.2) with ESMTP id n0SLh7fA021155 for <@sunmail2sca.sfbay.sun.com:psarc-ext@sun.com>; Wed, 28 Jan 2009 13:43:07 -0800 (PST) Received: from pmxchannel-daemon.nwk-avmta-1.sfbay.Sun.COM by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0KE700I0DAZUWF00@nwk-avmta-1.sfbay.Sun.COM> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Wed, 28 Jan 2009 13:43:06 -0800 (PST) Received: from jurassic-x4600.sfbay.sun.com ([129.146.17.59]) by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KE700FBYAZTB710@nwk-avmta-1.sfbay.Sun.COM> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Wed, 28 Jan 2009 13:43:05 -0800 (PST) Received: from [129.146.228.120] (chaz.SFBay.Sun.COM [129.146.228.120]) by jurassic-x4600.sfbay.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n0SLh3Za451549; Wed, 28 Jan 2009 13:43:03 -0800 (PST) Date: Wed, 28 Jan 2009 13:43:07 -0800 From: Rod Evans Subject: 2009/054: dlinfo(3c) - segment mapping retrieval To: psarc@sac.sfbay.sun.com, psarc-ext@Sun.COM Reply-to: Rod.Evans@Sun.COM Message-id: <4980D16B.403@sun.com> Organization: Sun Microsystems Inc. MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 User-Agent: Thunderbird 2.0.0.18 (X11/20081215) Status: RO Content-Length: 4215 ------------------------------------------------------------------------ I'm sponsoring the following case for myself. This case qualifies for Architectural self-review, but I wish to record the following information. ------------------------------------------------------------------------ A request has been made for ld.so.1 to return an objects segment mapping information. This method of obtaining the data would be more light weight than having to go through things like /proc. 6237063 request extension to dl* family to provide segment bounds information With the approach of mmapobj(2), this request was put on hold, so that we could return a public/consistent data structure. mmapobj(2) has integrated, and ld.so.1 now uses it(6686372). dlinfo() will return mmapobj_result_t data by using two new flags: > #define RTLD_DI_MMAPS 12 /* obtain objects mappings or */ > #define RTLD_DI_MMAPCNT 13 /* mapping count */ An auxiliary structure is used to maintain the data: > typedef struct { > uint_t dlm_cnt; /* number of mapings */ > mmapobj_result_t *dlm_maps; /* mapping information */ > } Dl_mapinfo_t; The user will first determine the number of mappings using a RTLD_DI_MMAPCNT request, and then provide the appropriate buffer to a RTLD_DI_MMAPS request. This model follows the RTLD_DI_SERINFOSIZE/RTLD_DI_SERINFO model, approved with PSARC/2000/164 (bug id 4239213). ------------------------------------------------------------------------ Standard C Library Functions dlinfo(3C) ..... RTLD_DI_MMAPCNT Initialize a Dl_mapinfo_t structure for the handle that is specified, for use in a RTLD_DI_MMAPS request. The p argument is a Dl_mapinfo_t pointer (Dl_mapinfo_t *p). On return from a RTLD_DI_MMAPCNT request, the dlm_cnt member indicates the number of segment mappings that the associated object uses. To obtain the complete mapping information for an object, a mmapobj_result_t array for dlm_cnt entries must be allocated and assigned to the dlm_maps member. This initialized structure is then passed to a RTLD_DI_MMAPS request. See EXAMPLES. RTLD_DI_MMAPS Obtain segment mapping information for the handle that is specified. The p argument is a Dl_mapinfo_t pointer (Dl_mapinfo_t *p). This structure must be initialized from a previous RTLD_DI_MMAPCNT request. Segment mapping information is provided in an array of mmapobj_result_t structures that originate from the mma- pobj(2) of the associated object. The dlm_cnt member from a previous RTLD_DI_MMAPCNT request must be used to allocate a mmapobj_result_t array. This array should be assigned to the dlm_maps member. This initialized struc- ture is then passed to a RTLD_DI_MMAPS request, where the segment mapping information is copied to the allo- cated mmapobj_result_t array. See EXAMPLES. ..... Example 2: Use dlinfo() to obtain segment information. The following example demonstrates how a dynamic object can inspect its segment mapping information. For simplicity, error checking has been omitted Dl_mapinfo_t mi; uint_t cnt; /* determine the number of segment mappings */ dlinfo(RTLD_SELF, RTLD_DI_MMAPCNT, &mi); /* allocate the appropriate mapping array */ mi.dlm_maps = malloc(mi.dlm_cnt * sizeof (mmapobj_result_t)); /* obtain the mapping information */ dlinfo(RTLD_SELF, RTLD_DI_MMAPS, &mi); for (cnt = 0; cnt < mi.dlm_cnt; cnt++) { (void) printf("addr=%x - memory size=%x\n", mi.dlm_maps[cnt].mr_addr, mi.dlm_maps[cnt].mr_msize); } ------------------------------------------------------------------------ Release binding: Patch/Micro dlfcn.h: Dl_mapinfo_t Committed. RTLD_DI_SERINFO Committed. RTLD_DI_SERINFOSIZE Committed. -- Rod. From sacadmin Wed Jan 28 13:47:45 2009 Received: from jurassic-x4600.sfbay.sun.com (cretaceous.SFBay.Sun.COM [129.146.17.59]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n0SLliG3002963 for ; Wed, 28 Jan 2009 13:47:44 -0800 (PST) Received: from [129.146.228.120] (chaz.SFBay.Sun.COM [129.146.228.120]) by jurassic-x4600.sfbay.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n0SLlhBw452815; Wed, 28 Jan 2009 13:47:43 -0800 (PST) Message-ID: <4980D283.2030005@sun.com> Date: Wed, 28 Jan 2009 13:47:47 -0800 From: Rod Evans Reply-To: Rod.Evans@sun.com Organization: Sun Microsystems Inc. User-Agent: Thunderbird 2.0.0.18 (X11/20081215) MIME-Version: 1.0 To: psarc@sac.sfbay.sun.com, psarc-ext@sun.com Subject: Re: 2009/054: dlinfo(3c) - segment mapping retrieval References: <4980D16B.403@sun.com> In-Reply-To: <4980D16B.403@sun.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Status: RO Content-Length: 515 Rod Evans wrote: > ------------------------------------------------------------------------ > Release binding: Patch/Micro > > dlfcn.h: > Dl_mapinfo_t Committed. > RTLD_DI_SERINFO Committed. > RTLD_DI_SERINFOSIZE Committed. Sigh .... blindly cutting and pasting ... that should be: Release binding: Patch/Micro dlfcn.h: Dl_mapinfo_t Committed. RTLD_DI_MMAPCNT Committed. RTLD_DI_MMAPS Committed. -- Rod. From Rod.Evans@sun.com Wed Jan 28 13:47:48 2009 Received: from sunmail5.uk.sun.com (sunmail5.UK.Sun.COM [129.156.85.165]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n0SLllri002971 for ; Wed, 28 Jan 2009 13:47:47 -0800 (PST) Received: from brm-avmta-1.central.sun.com (brm-avmta-1.Central.Sun.COM [129.147.4.11]) by sunmail5.uk.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.2) with ESMTP id n0SLlk2T018660 for <@sunmail2sca.sfbay.sun.com:psarc-ext@sun.com>; Wed, 28 Jan 2009 21:47:46 GMT Received: from pmxchannel-daemon.brm-avmta-1.central.sun.com by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0KE700803B7LW800@brm-avmta-1.central.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Wed, 28 Jan 2009 14:47:45 -0700 (MST) Received: from jurassic-x4600.sfbay.sun.com ([129.146.17.59]) by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KE700FN2B7LJ0E0@brm-avmta-1.central.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Wed, 28 Jan 2009 14:47:45 -0700 (MST) Received: from [129.146.228.120] (chaz.SFBay.Sun.COM [129.146.228.120]) by jurassic-x4600.sfbay.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n0SLlhBw452815; Wed, 28 Jan 2009 13:47:43 -0800 (PST) Date: Wed, 28 Jan 2009 13:47:47 -0800 From: Rod Evans Subject: Re: 2009/054: dlinfo(3c) - segment mapping retrieval In-reply-to: <4980D16B.403@sun.com> To: psarc@sac.sfbay.sun.com, psarc-ext@sun.com Reply-to: Rod.Evans@sun.com Message-id: <4980D283.2030005@sun.com> Organization: Sun Microsystems Inc. MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 References: <4980D16B.403@sun.com> User-Agent: Thunderbird 2.0.0.18 (X11/20081215) Status: RO Content-Length: 515 Rod Evans wrote: > ------------------------------------------------------------------------ > Release binding: Patch/Micro > > dlfcn.h: > Dl_mapinfo_t Committed. > RTLD_DI_SERINFO Committed. > RTLD_DI_SERINFOSIZE Committed. Sigh .... blindly cutting and pasting ... that should be: Release binding: Patch/Micro dlfcn.h: Dl_mapinfo_t Committed. RTLD_DI_MMAPCNT Committed. RTLD_DI_MMAPS Committed. -- Rod. From sacadmin Wed Jan 28 13:53:10 2009 Received: from jurassic-x4600.sfbay.sun.com (cretaceous.SFBay.Sun.COM [129.146.17.63]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n0SLrAKq003198 for ; Wed, 28 Jan 2009 13:53:10 -0800 (PST) Received: from [129.146.228.120] (chaz.SFBay.Sun.COM [129.146.228.120]) by jurassic-x4600.sfbay.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n0SLr95N454419; Wed, 28 Jan 2009 13:53:09 -0800 (PST) Message-ID: <4980D3C9.1080300@sun.com> Date: Wed, 28 Jan 2009 13:53:13 -0800 From: Rod Evans Reply-To: Rod.Evans@sun.com Organization: Sun Microsystems Inc. User-Agent: Thunderbird 2.0.0.18 (X11/20081215) MIME-Version: 1.0 To: psarc@sac.sfbay.sun.com, psarc-ext@sun.com Subject: 2009/054: dlinfo(3c) - segment mapping retrieval References: <4980D16B.403@sun.com> In-Reply-To: <4980D16B.403@sun.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Status: RO Content-Length: 504 > ------------------------------------------------------------------------ > Release binding: Patch/Micro > > dlfcn.h: > Dl_mapinfo_t Committed. > RTLD_DI_SERINFO Committed. > RTLD_DI_SERINFOSIZE Committed. Sigh .... blindly cutting and pasting ... that should be: Release binding: Patch/Micro dlfcn.h: Dl_mapinfo_t Committed. RTLD_DI_MMAPCNT Committed. RTLD_DI_MMAPS Committed. -- Rod. From Rod.Evans@sun.com Wed Jan 28 13:53:12 2009 Received: from newsunmail1brm.central.sun.com (newsunmail1brm.Central.Sun.COM [129.147.62.245]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n0SLrC9Z003202 for ; Wed, 28 Jan 2009 13:53:12 -0800 (PST) Received: from brm-avmta-1.central.sun.com (brm-avmta-1.Central.Sun.COM [129.147.4.11]) by newsunmail1brm.central.sun.com (8.13.7+Sun/8.13.7/ENSMAIL,v2.2) with ESMTP id n0SLrBQw031749 for <@sunmail2sca.sfbay.sun.com:psarc-ext@sun.com>; Wed, 28 Jan 2009 14:53:12 -0700 (MST) Received: from pmxchannel-daemon.brm-avmta-1.central.sun.com by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0KE70091BBGNDY00@brm-avmta-1.central.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Wed, 28 Jan 2009 14:53:11 -0700 (MST) Received: from jurassic-x4600.sfbay.sun.com ([129.146.17.59]) by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KE700FL1BGMJGD0@brm-avmta-1.central.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Wed, 28 Jan 2009 14:53:11 -0700 (MST) Received: from [129.146.228.120] (chaz.SFBay.Sun.COM [129.146.228.120]) by jurassic-x4600.sfbay.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n0SLr95N454419; Wed, 28 Jan 2009 13:53:09 -0800 (PST) Date: Wed, 28 Jan 2009 13:53:13 -0800 From: Rod Evans Subject: 2009/054: dlinfo(3c) - segment mapping retrieval In-reply-to: <4980D16B.403@sun.com> To: psarc@sac.sfbay.sun.com, psarc-ext@sun.com Reply-to: Rod.Evans@sun.com Message-id: <4980D3C9.1080300@sun.com> Organization: Sun Microsystems Inc. MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 References: <4980D16B.403@sun.com> User-Agent: Thunderbird 2.0.0.18 (X11/20081215) Status: RO Content-Length: 504 > ------------------------------------------------------------------------ > Release binding: Patch/Micro > > dlfcn.h: > Dl_mapinfo_t Committed. > RTLD_DI_SERINFO Committed. > RTLD_DI_SERINFOSIZE Committed. Sigh .... blindly cutting and pasting ... that should be: Release binding: Patch/Micro dlfcn.h: Dl_mapinfo_t Committed. RTLD_DI_MMAPCNT Committed. RTLD_DI_MMAPS Committed. -- Rod. From sacadmin Tue Feb 3 17:28:59 2009 Received: from jurassic-x4600.sfbay.sun.com (cretaceous.SFBay.Sun.COM [129.146.17.59]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n141SxuA009423 for ; Tue, 3 Feb 2009 17:28:59 -0800 (PST) Received: from [129.146.228.120] (chaz.SFBay.Sun.COM [129.146.228.120]) by jurassic-x4600.sfbay.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n141Sv9V794834; Tue, 3 Feb 2009 17:28:57 -0800 (PST) Message-ID: <4988EFCC.1080602@sun.com> Date: Tue, 03 Feb 2009 17:30:52 -0800 From: Rod Evans Reply-To: Rod.Evans@sun.com Organization: Sun Microsystems Inc. User-Agent: Thunderbird 2.0.0.18 (X11/20081215) MIME-Version: 1.0 To: psarc@sac.sfbay.sun.com CC: psarc-ext@sun.com Subject: Re: 2009/054: dlinfo(3c) - segment mapping retrieval References: <4980D16B.403@sun.com> In-Reply-To: <4980D16B.403@sun.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Status: RO Content-Length: 823 > An auxiliary structure is used to maintain the data: > > > typedef struct { > > uint_t dlm_cnt; /* number of mapings */ > > mmapobj_result_t *dlm_maps; /* mapping information */ > > } Dl_mapinfo_t; Minor update, this data structure has been expanded to provide a return count of the mappings that were filled in by ld.so.1. A user is free to use a constant array to represent a maximum number of mappings, but ld.so.1 will return how many it provided. > typedef struct { > mmapobj_result_t *dlm_maps; /* mapping information */ > uint_t dlm_acnt; /* number of dlm_maps mappings */ > uint_t dlm_rcnt; /* number of returned mappings */ > } Dl_mapinfo_t; Minor modes to the man page description and example have been supplied with the associated bug report (6237063). -- Rod. From Rod.Evans@sun.com Tue Feb 3 17:29:02 2009 Received: from sunmail5.uk.sun.com (sunmail5.UK.Sun.COM [129.156.85.165]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n141T1sW009427 for ; Tue, 3 Feb 2009 17:29:01 -0800 (PST) Received: from nwk-avmta-2.sfbay.sun.com (nwk-avmta-2.SFBay.Sun.COM [129.145.155.6]) by sunmail5.uk.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.2) with ESMTP id n141SxYl024924 for <@sunmail2sca.sfbay.sun.com:psarc-ext@sun.com>; Wed, 4 Feb 2009 01:29:00 GMT Received: from pmxchannel-daemon.nwk-avmta-2.sfbay.sun.com by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0KEI00K01PGBEW00@nwk-avmta-2.sfbay.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Tue, 03 Feb 2009 17:28:59 -0800 (PST) Received: from jurassic-x4600.sfbay.sun.com ([129.146.17.63]) by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KEI00IHSPGB3610@nwk-avmta-2.sfbay.sun.com> for psarc-ext@sun.com (ORCPT psarc-ext@sun.com); Tue, 03 Feb 2009 17:28:59 -0800 (PST) Received: from [129.146.228.120] (chaz.SFBay.Sun.COM [129.146.228.120]) by jurassic-x4600.sfbay.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n141Sv9V794834; Tue, 03 Feb 2009 17:28:57 -0800 (PST) Date: Tue, 03 Feb 2009 17:30:52 -0800 From: Rod Evans Subject: Re: 2009/054: dlinfo(3c) - segment mapping retrieval In-reply-to: <4980D16B.403@sun.com> To: psarc@sac.sfbay.sun.com Cc: psarc-ext@sun.com Reply-to: Rod.Evans@sun.com Message-id: <4988EFCC.1080602@sun.com> Organization: Sun Microsystems Inc. MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 References: <4980D16B.403@sun.com> User-Agent: Thunderbird 2.0.0.18 (X11/20081215) Status: RO Content-Length: 823 > An auxiliary structure is used to maintain the data: > > > typedef struct { > > uint_t dlm_cnt; /* number of mapings */ > > mmapobj_result_t *dlm_maps; /* mapping information */ > > } Dl_mapinfo_t; Minor update, this data structure has been expanded to provide a return count of the mappings that were filled in by ld.so.1. A user is free to use a constant array to represent a maximum number of mappings, but ld.so.1 will return how many it provided. > typedef struct { > mmapobj_result_t *dlm_maps; /* mapping information */ > uint_t dlm_acnt; /* number of dlm_maps mappings */ > uint_t dlm_rcnt; /* number of returned mappings */ > } Dl_mapinfo_t; Minor modes to the man page description and example have been supplied with the associated bug report (6237063). -- Rod.