From casper@sac.sfbay.sun.com Wed May 6 02:40:34 2009 Received: from sunmail4.singapore.sun.com (sunmail4.Singapore.Sun.COM [129.158.71.19]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n469eXrN018239 for ; Wed, 6 May 2009 02:40:34 -0700 (PDT) Received: from brm-avmta-1.central.sun.com (brm-avmta-1.Central.Sun.COM [129.147.4.11]) by sunmail4.singapore.sun.com (8.13.4+Sun/8.13.3/ENSMAIL,v2.2) with ESMTP id n469eUZS008331; Wed, 6 May 2009 17:40:32 +0800 (SGT) 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 <0KJ700B09UVJRP00@brm-avmta-1.central.sun.com>; Wed, 06 May 2009 03:40:31 -0600 (MDT) Received: from dm-sfbay-02.sfbay.sun.com ([129.146.11.31]) by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KJ700E3QUVI9WD0@brm-avmta-1.central.sun.com>; Wed, 06 May 2009 03:40:30 -0600 (MDT) Received: from sac.sfbay.sun.com (sac.SFBay.Sun.COM [129.146.226.132]) by dm-sfbay-02.sfbay.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.2) with ESMTP id n469eUeE001889; Wed, 06 May 2009 02:40:30 -0700 (PDT) Received: from sac.sfbay.sun.com (localhost [127.0.0.1]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n469eT1j018234; Wed, 06 May 2009 02:40:29 -0700 (PDT) Received: (from casper@localhost) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8/Submit) id n469eTP9018230; Wed, 06 May 2009 02:40:29 -0700 (PDT) Date: Wed, 06 May 2009 02:40:29 -0700 (PDT) From: Casper Dik Subject: faccessat(2) - determine accessibility of a file using file descriptors [PSARC/2009/284 Self Review] To: PSARC-ext@sun.com Cc: Sumanth.Naropanth@sun.com Message-id: <200905060940.n469eTP9018230@sac.sfbay.sun.com> Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 Status: RO Content-Length: 9501 Template Version: @(#)sac_nextcase 1.68 02/23/09 SMI This information is Copyright 2009 Sun Microsystems 1. Introduction 1.1. Project/Component Working Name: faccessat(2) - determine accessibility of a file using file descriptors 1.2. Name of Document Author/Supplier: Author: Sumanth Naropanth 1.3 Date of This Document: 06 May, 2009 4. Technical Description faccessat(2) - determine accessibility of a file using file descriptors AUTHOR: Sumanth Naropanth SUMMARY: Promotion of the private __accessat() function in OpenSolaris to public visibility as faccessat(2) PROBLEM: RFE 6478917 introduced a new extended attribute system interface: int __accessat(int fd, const char *path, int amode); This function is equivalent to the access(2) system call, except in the case where the "path" variable specifies a relative path. In this case the file whose accessibility is to be determined shall be located relative to the directory associated with the file descriptor "fd" instead of the current working directory. If "__accessat()" is passed the special value AT_FDCWD in the "fd" parameter, the current working directory is used and the behavior shall be identical to a call to access(). This function was kept private at the time of writing since there had been discussions among the standards body on the name for this function. Recent publications of the Open Group Technical Standards, including [IEEE P1003.1 Draft 5.1, 15 May 2008] has confirmed that this interface shall be named 'faccessat' and shall have the following prototype: int faccessat(int fd, const char *path, int amode, int flag); The 'accessat' function in OpenSolaris is rewritten to conform to the new specifications and is renamed as 'faccessat'. The function should promoted to be a public interface, with an updated access(2) man page. PROPOSED SOLUTION: Promoting the '__accessat()' interface to public status and modifying the function to include the 'int flag' variable. ISSUES: NONE BINDING: This case seeks a Minor Release binding. COMMITMENT LEVEL: ------------------------------------------------------- | Interface | Commitment Level | ------------------------------------------------------- | faccessat() | Committed | ------------------------------------------------------- REFERENCE DOCUMENTS: See the updated man page for access(2) below. ------------------------------------------------------------------------------ System Calls access(2) NAME access, faccessat - determine accessibility of a file SYNOPSIS #include #include int access(const char *path, int amode); int faccessat(int fd, const char *path, int amode, int flag); DESCRIPTION The access() function checks the file named by the pathname pointed to by the _path_ argument for accessibility according to the bit pattern contained in _amode_, using the real user ID in place of the effective user ID and the real group ID in place of the effective group ID. This allows a setuid process to verify that the user running it would have had permission to access this file. The value of _amode_ is either the bitwise inclusive OR of the access permissions to be checked (R_OK, W_OK, X_OK) or the existence test, F_OK. These constants are defined in as follows: R_OK Test for read permission. W_OK Test for write permission. X_OK Test for execute or search permission. F_OK Check existence of file See Intro(2) for additional information about "File Access Permission". If any access permissions are to be checked, each will be checked individually, as described in Intro(2). If the pro- cess has appropriate privileges, an implementation may indi- cate success for X_OK even if none of the execute file per- mission bits are set. The faccessat() function is equivalent to the access() function, except in the case where _path_ specifies a relative path. In this case the file whose accessibility is to be determined should be located relative to the directory associated with the file descriptor _fd_ instead of the current working directory. If faccessat() is passed the special value AT_FDCWD in the _fd_ parameter, the current working directory is used and the behavior is identical to a call to access(). Values for _flag_ are constructed by a bitwise-inclusive OR of flags from the following list, defined in : AT_EACCESS The checks for accessibility are performed using the effective user and group IDs instead of the real user and group ID as required in a call to access(). RETURN VALUES If the requested access is permitted, access() and faccessat() succeed and return 0. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS These functions will fail if: EACCES Permission bits of the file mode do not per- mit the requested access, or search permis- sion is denied on a component of the path prefix. EFAULT _path_ points to an illegal address. EINTR A signal was caught during the access() function. ELOOP Too many symbolic links were encountered in resolving _path_. ELOOP A loop exists in symbolic links encountered during resolution of the _path_ argument. ENAMETOOLONG The length of the _path_ argument exceeds {PATH_MAX}, or a pathname component is longer than {NAME_MAX} while _POSIX_NO_TRUNC is in effect. ENOENT A component of _path_ does not name an exist- ing file or _path_ is an empty string. ENOLINK _path_ points to a remote machine and the link to that machine is no longer active. ENOTDIR A component of the path prefix is not a directory. ENXIO The _path_ argument points to a character or block device special file and the corresponding device has been retired by the fault management framework. EROFS Write access is requested for a file on a read-only file system. The faccessat() function will fail if EBADF The _path_ argument does not specify an absolute path and the fd argument is neither AT_FDCWD nor a valid file descriptor open for reading or searching. These functions function may fail if: EINVAL The value of the _amode_ argument is invalid. ENAMETOOLONG Pathname resolution of a symbolic link pro- duced an intermediate result whose length exceeds {PATH_MAX}. ETXTBSY Write access is requested for a pure pro- cedure (shared text) file that is being exe- cuted. The faccessat() function may fail if: EINVAL The value of the flag argument is not valid. ENOTDIR The _path_ argument is not an absolute path and _fd_ is neither AT_FDCWD nor a file descriptor associated with a directory. USAGE Additional values of _amode_ other than the set defined in the description might be valid, for example, if a system has extended access controls. The purpose of the faccessat() function is to enable the checking of the accessibility of files in directories other than the current working directory without exposure to race conditions. Any part of the path of a file could be changed in parallel to a call to access(), resulting in unspecified behavior. By opening a file descriptor for the target directory and using the faccessat() function it can be guaranteed that the file tested for accessibility is located relative to the desired directory. ATTRIBUTES See attributes(5) for descriptions of the following attri- butes: ____________________________________________________________ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |_____________________________|_____________________________| | Interface Stability | Committed | |_____________________________|_____________________________| | MT-Level | Async-Signal-Safe | |_____________________________|_____________________________| | Standard | See standards(5). | |_____________________________|_____________________________| SEE ALSO Intro(2), chmod(2), stat(2), attributes(5), standards(5), fsattr(5), fstatat(2) 6. Resources and Schedule 6.4. Steering Committee requested information 6.4.1. Consolidation C-team Name: ON 6.5. ARC review type: Automatic 6.6. ARC Exposure: open From carlsonj@phorcys.east.sun.com Wed May 6 06:16:36 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 n46DGZxe018824 for ; Wed, 6 May 2009 06:16:36 -0700 (PDT) Received: from nwk-avmta-1.SFBay.Sun.COM (nwk-avmta-1.SFBay.Sun.COM [129.146.11.74]) by sunmail5.uk.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.2) with ESMTP id n46DGYhS017046 for <@sunmail2sca.sfbay.sun.com:PSARC-ext@Sun.Com>; Wed, 6 May 2009 14:16:35 +0100 (BST) 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 <0KJ800K014VM2J00@nwk-avmta-1.sfbay.Sun.COM> for PSARC-ext@Sun.Com (ORCPT PSARC-ext@Sun.Com); Wed, 06 May 2009 06:16:34 -0700 (PDT) Received: from dm-east-02.east.sun.com ([129.148.13.5]) by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KJ800IWN4VK2BA0@nwk-avmta-1.sfbay.Sun.COM> for PSARC-ext@Sun.Com (ORCPT PSARC-ext@Sun.Com); Wed, 06 May 2009 06:16:33 -0700 (PDT) Received: from phorcys.east.sun.com (phorcys.East.Sun.COM [129.148.174.143]) by dm-east-02.east.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.2) with ESMTP id n46DGUaW065417; Wed, 06 May 2009 09:16:30 -0400 (EDT) Received: from phorcys.east.sun.com (phorcys.local [127.0.0.1]) by phorcys.east.sun.com (8.14.3+Sun/8.14.3) with ESMTP id n46DFiCM022562; Wed, 06 May 2009 09:15:44 -0400 (EDT) Received: (from carlsonj@localhost) by phorcys.east.sun.com (8.14.3+Sun/8.14.3/Submit) id n46DFid1022559; Wed, 06 May 2009 09:15:44 -0400 (EDT) Date: Wed, 06 May 2009 09:15:44 -0400 From: James Carlson Subject: Re: faccessat(2) - determine accessibility of a file using file descriptors [PSARC/2009/284 Self Review] In-reply-to: <200905060940.n469eTP9018230@sac.sfbay.sun.com> To: Casper Dik Cc: PSARC-ext@sun.com, Sumanth.Naropanth@sun.com Message-id: <18945.36224.133038.29786@gargle.gargle.HOWL> MIME-version: 1.0 X-Mailer: VM 7.01 under Emacs 21.3.1 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT X-PMX-Version: 5.4.1.325704 References: <200905060940.n469eTP9018230@sac.sfbay.sun.com> Status: RO Content-Length: 563 Casper Dik writes: > Recent publications of the Open Group Technical Standards, including > [IEEE P1003.1 Draft 5.1, 15 May 2008] has confirmed that this interface > shall be named 'faccessat' and shall have the following prototype: > > int faccessat(int fd, const char *path, int amode, int flag); Seems plenty obvious to me; +1. -- James Carlson, Solaris Networking Sun Microsystems / 35 Network Drive 71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677 From Joerg.Schilling9ab33xy531fokus.fraunhofer.de@bounce.antispameurope.com Wed May 6 10:20:31 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 n46HKUVK025319 for ; Wed, 6 May 2009 10:20:31 -0700 (PDT) Received: from nwk-avmta-1.SFBay.Sun.COM (nwk-avmta-1.SFBay.Sun.COM [129.146.11.74]) by sunmail5.uk.sun.com (8.13.8+Sun/8.13.8/ENSMAIL,v2.2) with ESMTP id n46HKRZl000111 for <@sunmail2sca.sfbay.sun.com:PSARC-ext@sun.com>; Wed, 6 May 2009 18:20:29 +0100 (BST) 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 <0KJ80030RG636L00@nwk-avmta-1.sfbay.Sun.COM> for PSARC-ext@sun.com (ORCPT PSARC-ext@sun.com); Wed, 06 May 2009 10:20:27 -0700 (PDT) Received: from brmea-mail-2.sun.com ([192.18.98.43]) by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KJ800FUUG620270@nwk-avmta-1.sfbay.Sun.COM> for PSARC-ext@sun.com (ORCPT PSARC-ext@sun.com); 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Wed, 06 May 2009 19:17:33 +0200 (CEST) Received: from EXCHSRV.fokus.fraunhofer.de (bohr [10.147.9.231]) by pluto.fokus.fraunhofer.de (8.13.7/8.13.7) with SMTP id n46HHXTj023826; Wed, 06 May 2009 19:17:33 +0200 (MEST) Received: from rigel ([10.147.65.195]) by EXCHSRV.fokus.fraunhofer.de with Microsoft SMTPSVC(6.0.3790.3959); Wed, 06 May 2009 19:17:33 +0200 Date: Wed, 06 May 2009 19:17:33 +0200 From: Joerg.Schilling@fokus.fraunhofer.de (Joerg Schilling) Subject: Re: faccessat(2) - determine accessibility of a file using file descriptors [PSARC/2009/284 Self Review] In-reply-to: <200905060940.n469eTP9018230@sac.sfbay.sun.com> Sender: Joerg.Schilling9ab33xy531fokus.fraunhofer.de@bounce.antispameurope.com To: PSARC-ext@sun.com, casper@sac.sfbay.sun.com Cc: Sumanth.Naropanth@sun.com Message-id: <4a01c62d.bnvdJr84SB7ej9WH%Joerg.Schilling@fokus.fraunhofer.de> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 8BIT X-PMX-Version: 5.4.1.325704 X-Brightmail-Tracker: AAAAAA== X-Antispam: No, score=0.0/5.0, scanned in 2.639sec at (localhost [127.0.0.1]) by smf-spamd v1.3.1 - http://smfs.sf.net/ References: <200905060940.n469eTP9018230@sac.sfbay.sun.com> User-Agent: nail 11.22 3/20/05 X-OriginalArrivalTime: 06 May 2009 17:17:33.0371 (UTC) FILETIME=[8B3090B0:01C9CE6E] Status: RO Content-Length: 975 Casper Dik wrote: > > Template Version: @(#)sac_nextcase 1.68 02/23/09 SMI > This information is Copyright 2009 Sun Microsystems > 1. Introduction > 1.1. Project/Component Working Name: > faccessat(2) - determine accessibility of a file using file descriptors > 1.2. Name of Document Author/Supplier: > Author: Sumanth Naropanth > 1.3 Date of This Document: > 06 May, 2009 > 4. Technical Description > faccessat(2) - determine accessibility of a file using file descriptors > > AUTHOR: > Sumanth Naropanth > > SUMMARY: > > Promotion of the private __accessat() function in OpenSolaris to public > visibility as faccessat(2) +1 Jörg -- EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin js@cs.tu-berlin.de (uni) joerg.schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily From roland.mainz@nrubsig.org Wed May 6 16:12:43 2009 Received: from sunmail4.singapore.sun.com (sunmail4.Singapore.Sun.COM [129.158.71.19]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id n46NCfWb004091 for ; Wed, 6 May 2009 16:12:41 -0700 (PDT) Received: from brm-avmta-1.central.sun.com (brm-avmta-1.Central.Sun.COM [129.147.4.11]) by sunmail4.singapore.sun.com (8.13.4+Sun/8.13.3/ENSMAIL,v2.2) with ESMTP id n46NCYrE024053; Thu, 7 May 2009 07:12:38 +0800 (SGT) 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 <0KJ800009WH08L00@brm-avmta-1.central.sun.com>; Wed, 06 May 2009 17:12:36 -0600 (MDT) Received: from brmea-mail-1.sun.com ([192.18.98.31]) by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KJ800HPQWGZ8030@brm-avmta-1.central.sun.com>; Wed, 06 May 2009 17:12:35 -0600 (MDT) Received: from relay41i.sun.com ([192.5.209.70]) by brmea-mail-1.sun.com (8.13.6+Sun/8.12.9) with ESMTP id n46NAW6t008181; Wed, 06 May 2009 23:12:35 +0000 (GMT) Received: from mmp42es.mmp.us.syntegra.com ([160.41.221.11] [160.41.221.11]) by relay41i.sun.com with ESMTP id BT-MMP-2825865; Wed, 06 May 2009 23:12:35 +0000 (Z) Received: from relay41i.sun.com (relay41i.sun.com [192.5.209.70]) by mmp42es.mmp.us.syntegra.com with ESMTP id BT-MMP-232414; Wed, 06 May 2009 23:12:34 +0000 (Z) Received: from mail-in-08.arcor-online.net ([151.189.21.48] [151.189.21.48]) by relay4i.sun.com with ESMTP id BT-MMP-759007; Wed, 06 May 2009 23:12:34 +0000 (Z) Received: from mail-in-19-z2.arcor-online.net (mail-in-19-z2.arcor-online.net [151.189.8.36]) by mx.arcor.de (Postfix) with ESMTP id 5C0D52AEB12; Thu, 07 May 2009 01:11:33 +0200 (CEST) Received: from mail-in-09.arcor-online.net (mail-in-09.arcor-online.net [151.189.21.49]) by mail-in-19-z2.arcor-online.net (Postfix) with ESMTP id 480D16C42B; Thu, 07 May 2009 01:11:33 +0200 (CEST) Received: from jupiterb48.nrubsig.org (dslb-094-219-212-156.pools.arcor-ip.net [94.219.212.156]) by mail-in-09.arcor-online.net (Postfix) with ESMTPS id 972361AF3A7; Thu, 07 May 2009 01:11:32 +0200 (CEST) Received: from nrubsig.org (localhost [127.0.0.1]) by jupiterb48.nrubsig.org (8.13.8+Sun/8.13.8) with ESMTP id n46NBUwt002143; Thu, 07 May 2009 01:11:30 +0200 (CEST) Date: Thu, 07 May 2009 01:11:29 +0200 From: Roland Mainz Subject: Re: faccessat(2) - determine accessibility of a file using filedescriptors [PSARC/2009/284 Self Review] Sender: gisburn@jupiterb48.nrubsig.org To: Casper Dik Cc: PSARC-ext@sun.com, Sumanth.Naropanth@sun.com Message-id: <4A021921.EDDC23A6@nrubsig.org> MIME-version: 1.0 X-Mailer: Mozilla 4.76 [en] (X11; U; SunOS 5.11 sun4u) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT X-Accept-Language: en X-PMX-Version: 5.4.1.325704 X-Brightmail-Tracker: AAAAAA== X-DKIM: Sendmail DKIM Filter v2.8.2 mail-in-09.arcor-online.net 972361AF3A7 X-Antispam: No, score=0.0/5.0, scanned in 0.130sec at (localhost [127.0.0.1]) by smf-spamd v1.3.1 - http://smfs.sf.net/ References: <200905060940.n469eTP9018230@sac.sfbay.sun.com> Status: RO Content-Length: 2771 Casper Dik wrote: > > Template Version: @(#)sac_nextcase 1.68 02/23/09 SMI > This information is Copyright 2009 Sun Microsystems > 1. Introduction > 1.1. Project/Component Working Name: > faccessat(2) - determine accessibility of a file using file descriptors > 1.2. Name of Document Author/Supplier: > Author: Sumanth Naropanth > 1.3 Date of This Document: > 06 May, 2009 > 4. Technical Description > faccessat(2) - determine accessibility of a file using file descriptors > > AUTHOR: > Sumanth Naropanth > > SUMMARY: > > Promotion of the private __accessat() function in OpenSolaris to public > visibility as faccessat(2) > > PROBLEM: > > RFE 6478917 introduced a new extended attribute system interface: > > int __accessat(int fd, const char *path, int amode); > > This function is equivalent to the access(2) system call, except in > the case where the "path" variable specifies a relative path. In this > case the file whose accessibility is to be determined shall be located > relative to the directory associated with the file descriptor "fd" > instead of the current working directory. > > If "__accessat()" is passed the special value AT_FDCWD in the "fd" > parameter, the current working directory is used and the behavior > shall be identical to a call to access(). > > This function was kept private at the time of writing since there > had been discussions among the standards body on the name for this > function. > > Recent publications of the Open Group Technical Standards, including > [IEEE P1003.1 Draft 5.1, 15 May 2008] has confirmed that this interface > shall be named 'faccessat' and shall have the following prototype: > > int faccessat(int fd, const char *path, int amode, int flag); [snip] > > ------------------------------------------------------- > | Interface | Commitment Level | > ------------------------------------------------------- > | faccessat() | Committed | > ------------------------------------------------------- Is it possible to make this interface "Uncommited" until the IEEE P1003.1 Draft has been made an official standard (e.g. what would you do if somehow the Draft changes the prototype or functionality in a subtle way - add another symbol or add some more hacks which depend on the |libc::__xpg6| variable) ? ---- Bye, Roland -- __ . . __ (o.\ \/ /.o) roland.mainz@nrubsig.org \__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer /O /==\ O\ TEL +49 641 3992797 (;O/ \/ \O;) From dcragun@sonic.net Wed May 6 21:59:15 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 n474xFWF006874 for ; Wed, 6 May 2009 21:59:15 -0700 (PDT) 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 n474xEcZ063995 for <@sunmail2sca.sfbay.sun.com:PSARC-ext@sun.com>; Wed, 6 May 2009 22:59:14 -0600 (MDT) 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 <0KJ900F09CIP6O00@brm-avmta-1.central.sun.com> for PSARC-ext@sun.com (ORCPT PSARC-ext@sun.com); Wed, 06 May 2009 22:59:13 -0600 (MDT) Received: from brmea-mail-1.sun.com ([192.18.98.31]) by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KJ9003B0CIOBC40@brm-avmta-1.central.sun.com> for PSARC-ext@sun.com (ORCPT PSARC-ext@sun.com); Wed, 06 May 2009 22:59:13 -0600 (MDT) Received: from relay44i.sun.com ([192.5.209.118]) by brmea-mail-1.sun.com (8.13.6+Sun/8.12.9) with ESMTP id n474xCYl001414 for ; Thu, 07 May 2009 04:59:12 +0000 (GMT) Received: from mmp41es.mmp.us.syntegra.com ([160.41.221.10] [160.41.221.10]) by relay44i.sun.com with ESMTP id BT-MMP-658176 for PSARC-ext@sun.com; Thu, 07 May 2009 04:50:03 +0000 (Z) Received: from relay42i.sun.com (relay42i.sun.com [192.5.209.72]) by mmp41es.mmp.us.syntegra.com with ESMTP id BT-MMP-635488 for PSARC-ext@sun.com; Thu, 07 May 2009 04:50:03 +0000 (Z) Received: from a.mail.sonic.net ([64.142.16.245] [64.142.16.245]) by relay4i.sun.com with ESMTP id BT-MMP-1082060 for PSARC-ext@sun.com; Thu, 07 May 2009 04:50:03 +0000 (Z) Received: from webmail.sonic.net (a.webmail.sonic.net [64.142.100.132]) by a.mail.sonic.net (8.13.8.Beta0-Sonic/8.13.7) with ESMTP id n473H0Of003711; Wed, 06 May 2009 20:17:00 -0700 Received: from 76.191.129.144 (SquirrelMail authenticated user dcragun) by webmail.sonic.net with HTTP; Wed, 06 May 2009 20:16:59 -0700 (PDT) Date: Wed, 06 May 2009 20:16:59 -0700 (PDT) From: Don Cragun Subject: Re: faccessat(2) - determine accessibility of a file using file descriptors [PSARC/2009/284 Self Review] In-reply-to: To: roland.mainz@nrubsig.org Cc: PSARC-ext@sun.com Message-id: <20281.76.191.129.144.1241666219.squirrel@webmail.sonic.net> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7BIT Importance: Normal X-Priority: 3 (Normal) X-PMX-Version: 5.4.1.325704 X-Brightmail-Tracker: AAAAAA== X-Antispam: No, score=0.0/5.0, scanned in 0.063sec at (localhost [127.0.0.1]) by smf-spamd v1.3.1 - http://smfs.sf.net/ References: User-Agent: SquirrelMail/1.4.9a Status: RO Content-Length: 1530 > Date: Thu, 07 May 2009 01:11:29 +0200 > From: Roland Mainz > Message-ID: <4A021921.EDDC23A6@nrubsig.org> > > Casper Dik wrote: >> ... ... ... >> Recent publications of the Open Group Technical Standards, including >> [IEEE P1003.1 Draft 5.1, 15 May 2008] has confirmed that this >> interface >> shall be named 'faccessat' and shall have the following prototype: >> >> int faccessat(int fd, const char *path, int amode, int >> flag); > [snip] >> >> ------------------------------------------------------- >> | Interface | Commitment Level | >> ------------------------------------------------------- >> | faccessat() | Committed | >> ------------------------------------------------------- > > > Is it possible to make this interface "Uncommited" until the IEEE > P1003.1 Draft has been made an official standard (e.g. what would you do > if somehow the Draft changes the prototype or functionality in a subtle > way - add another symbol or add some more hacks which depend on the > |libc::__xpg6| variable) ? > > Bye, > Roland Roland, It is no longer a draft standard. It was formally approved by all three bodies (The Open Group as SUSv4, by IEEE as IEEE Std 1003.1-2008, and by ISO as ISO/IEC IS 9945:2008) last year. The specification for this function did not change during balloting. The branding program for the next UNIX brand is not yet in place. - Don From Joerg.Schilling9ab33xy531fokus.fraunhofer.de@bounce.antispameurope.com Thu May 7 01:56:51 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 n478uoHU009441 for ; Thu, 7 May 2009 01:56:50 -0700 (PDT) Received: from brm-avmta-1.central.sun.com (brm-avmta-1.Central.Sun.COM [129.147.4.11]) by sunmail2sca.sfbay.sun.com (8.13.7+Sun/8.13.7/ENSMAIL,v2.2) with ESMTP id n478uf1x011726 for <@sunmail2sca.sfbay.sun.com:PSARC-ext@sun.com>; Thu, 7 May 2009 01:56:50 -0700 (PDT) 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 <0KJ900G1XNIQTV00@brm-avmta-1.central.sun.com> for PSARC-ext@sun.com (ORCPT PSARC-ext@sun.com); Thu, 07 May 2009 02:56:50 -0600 (MDT) Received: from sca-ea-mail-1.sun.com ([192.18.43.24]) by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0KJ900DF5NIP2T30@brm-avmta-1.central.sun.com> for PSARC-ext@sun.com (ORCPT PSARC-ext@sun.com); Thu, 07 May 2009 02:56:49 -0600 (MDT) Received: from relay43i.sun.com ([192.5.209.74]) by sca-ea-mail-1.sun.com (8.13.7+Sun/8.12.9) with ESMTP id n478nVSm002996 for ; Thu, 07 May 2009 08:56:49 +0000 (GMT) Received: from mms48es.mms.us.syntegra.com ([160.41.221.230] [160.41.221.230]) by relay43i.sun.com with ESMTP id BT-MMP-2867572 for PSARC-ext@sun.com; Thu, 07 May 2009 08:56:48 +0000 (Z) Received: from relay43i.sun.com (relay43i.sun.com [192.5.209.74]) by mms48es.mms.us.syntegra.com with ESMTP id BT-MMP-9523227 for PSARC-ext@sun.com; Thu, 07 May 2009 08:56:47 +0000 (Z) Received: from relay02-haj2.antispameurope.com ([83.246.65.52] [83.246.65.52]) by relay4i.sun.com with ESMTP id BT-MMP-1321722 for PSARC-ext@sun.com; Thu, 07 May 2009 08:56:47 +0000 (Z) Received: by relay02-haj2.antispameurope.com (ASE-Secure-MTA, from userid 1000) id C47D56F0518; Thu, 07 May 2009 10:56:16 +0200 (CEST) Received: from pluto.fokus.fraunhofer.de (pluto.fokus.fraunhofer.de [195.37.77.164]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by relay02-haj2.antispameurope.com (ASE-Secure-MTA) with ESMTP id 662986F0516; Thu, 07 May 2009 10:56:16 +0200 (CEST) Received: from EXCHSRV.fokus.fraunhofer.de (bohr [10.147.9.231]) by pluto.fokus.fraunhofer.de (8.13.7/8.13.7) with SMTP id n478uGTi020490; Thu, 07 May 2009 10:56:16 +0200 (MEST) Received: from rigel ([10.147.65.195]) by EXCHSRV.fokus.fraunhofer.de with Microsoft SMTPSVC(6.0.3790.3959); Thu, 07 May 2009 10:56:15 +0200 Date: Thu, 07 May 2009 10:56:15 +0200 From: Joerg.Schilling@fokus.fraunhofer.de (Joerg Schilling) Subject: Re: faccessat(2) - determine accessibility of a file using filedescriptors [PSARC/2009/284 Self Review] In-reply-to: <4A021921.EDDC23A6@nrubsig.org> Sender: Joerg.Schilling9ab33xy531fokus.fraunhofer.de@bounce.antispameurope.com To: roland.mainz@nrubsig.org, casper@sac.sfbay.sun.com Cc: Sumanth.Naropanth@sun.com, PSARC-ext@sun.com Message-id: <4a02a22f.AUi+5I9A1OQ+HB+c%Joerg.Schilling@fokus.fraunhofer.de> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 8BIT X-PMX-Version: 5.4.1.325704 X-Brightmail-Tracker: AAAAAA== X-Antispam: No, score=0.0/5.0, scanned in 0.434sec at (localhost [127.0.0.1]) by smf-spamd v1.3.1 - http://smfs.sf.net/ References: <200905060940.n469eTP9018230@sac.sfbay.sun.com> <4A021921.EDDC23A6@nrubsig.org> User-Agent: nail 11.22 3/20/05 X-OriginalArrivalTime: 07 May 2009 08:56:15.0958 (UTC) FILETIME=[AE114F60:01C9CEF1] Status: RO Content-Length: 970 Roland Mainz wrote: > Is it possible to make this interface "Uncommited" until the IEEE > P1003.1 Draft has been made an official standard (e.g. what would you do > if somehow the Draft changes the prototype or functionality in a subtle > way - add another symbol or add some more hacks which depend on the > |libc::__xpg6| variable) ? The function is in the Opengroup draft since a few years and the opengroup standard was accepted last year. Why do you believe this will be changed? Also note that the other functions from this interface group have been added by Sun in August 2001 and the standard is based on this Sun implementation. Jörg -- EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin js@cs.tu-berlin.de (uni) joerg.schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily