From: Roland McGrath <roland-/Z5OmTQCD9xF6kxbq+BtvQ@public.gmane.org> To: David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Cc: "Myklebust, Trond" <Trond.Myklebust-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org>, Steve French <smfrench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, "linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "samba-technical-w/Ol4Ecudpl8XjKLYN78aQ@public.gmane.org" <samba-technical-w/Ol4Ecudpl8XjKLYN78aQ@public.gmane.org>, "linux-ext4-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-ext4-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "wine-devel-5vRYHf7vrtgdnm+yROfE0A@public.gmane.org" <wine-devel-5vRYHf7vrtgdnm+yROfE0A@public.gmane.org>, "kfm-devel-RoXCvvDuEio@public.gmane.org" <kfm-devel-RoXCvvDuEio@public.gmane.org>, "nautilus-list-rDKQcyrBJuzYtjvyW6yDsg@public.gmane.org" <nautilus-list-rDKQcyrBJuzYtjvyW6yDsg@public.gmane.org>, "linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "libc-alpha-9JcytcrH/bA+uJoB2kUjGw@public.gmane.org" <libc-alpha-9JcytcrH/bA+uJoB2kUjGw@public.gmane.org> Subject: Re: [PATCH 0/6] Extended file stat system call Date: Thu, 26 Apr 2012 15:05:52 -0700 (PDT) [thread overview] Message-ID: <20120426220552.D98D62C0D3@topped-with-meat.com> (raw) In-Reply-To: David Howells's message of Thursday, 26 April 2012 22:57:56 +0100 <10104.1335477476-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> > What if the xstat() and struct xstat eventually becomes what userspace > uses as stat() (as a wrapper) and struct stat (if such a thing is > possible with glibc versioning)? It's certainly possible with symbol versioning, though it seems much more likely that we'd stick with the existing struct stat and stat* interfaces and only have the implementation using statx underneath (e.g. for new machines or kernel ABIs where the kernel stops providing any calls except for statxat), at least for the foreseeable future. > Do older programs that think they're using stat() and don't know about > the extra fields available expect to see a useful value in st_ino? POSIX requires that st_ino have a useful value for the standard *stat calls. Thanks, Roland
WARNING: multiple messages have this Message-ID (diff)
From: Roland McGrath <roland@hack.frob.com> To: David Howells <dhowells@redhat.com> Cc: "Myklebust, Trond" <Trond.Myklebust@netapp.com>, Steve French <smfrench@gmail.com>, "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>, "linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>, "linux-cifs@vger.kernel.org" <linux-cifs@vger.kernel.org>, "samba-technical@lists.samba.org" <samba-technical@lists.samba.org>, "linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>, "wine-devel@winehq.org" <wine-devel@winehq.org>, "kfm-devel@kde.org" <kfm-devel@kde.org>, "nautilus-list@gnome.org" <nautilus-list@gnome.org>, "linux-api@vger.kernel.org" <linux-api@vger.kernel.org>, "libc-alpha@sourceware.org" <libc-alpha@sourceware.org> Subject: Re: [PATCH 0/6] Extended file stat system call Date: Thu, 26 Apr 2012 15:05:52 -0700 (PDT) [thread overview] Message-ID: <20120426220552.D98D62C0D3@topped-with-meat.com> (raw) In-Reply-To: David Howells's message of Thursday, 26 April 2012 22:57:56 +0100 <10104.1335477476@redhat.com> > What if the xstat() and struct xstat eventually becomes what userspace > uses as stat() (as a wrapper) and struct stat (if such a thing is > possible with glibc versioning)? It's certainly possible with symbol versioning, though it seems much more likely that we'd stick with the existing struct stat and stat* interfaces and only have the implementation using statx underneath (e.g. for new machines or kernel ABIs where the kernel stops providing any calls except for statxat), at least for the foreseeable future. > Do older programs that think they're using stat() and don't know about > the extra fields available expect to see a useful value in st_ino? POSIX requires that st_ino have a useful value for the standard *stat calls. Thanks, Roland
next prev parent reply other threads:[~2012-04-26 22:05 UTC|newest] Thread overview: 144+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-04-19 14:05 [PATCH 0/6] Extended file stat system call David Howells 2012-04-19 14:05 ` David Howells 2012-04-19 14:06 ` [PATCH 3/6] xstat: AFS: Return extended attributes David Howells 2012-04-19 14:06 ` [PATCH 4/6] xstat: NFS: " David Howells [not found] ` <20120419140653.17272.95035.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org> 2012-04-19 14:35 ` Myklebust, Trond 2012-04-19 14:35 ` Myklebust, Trond 2012-04-26 13:52 ` David Howells 2012-04-19 14:07 ` [PATCH 5/6] xstat: CIFS: " David Howells [not found] ` <20120419140706.17272.72290.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org> 2012-04-19 15:19 ` Steve French 2012-04-19 15:19 ` Steve French 2012-04-19 16:32 ` [PATCH 0/6] Extended file stat system call Roland McGrath 2012-04-19 21:51 ` Paul Eggert 2012-04-19 23:05 ` Roland McGrath 2012-04-26 14:16 ` David Howells [not found] ` <20173.1335449760-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-04-26 18:22 ` Roland McGrath 2012-04-26 18:22 ` Roland McGrath [not found] ` <4F9088D6.9020203-764C0pRuGfqVc3sceRu5cw@public.gmane.org> 2012-04-26 14:04 ` David Howells 2012-04-26 14:04 ` David Howells [not found] ` <19638.1335449047-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-04-26 18:24 ` Roland McGrath 2012-04-26 18:24 ` Roland McGrath 2012-04-19 23:29 ` Andreas Dilger 2012-04-26 13:54 ` David Howells [not found] ` <19184.1335448455-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-04-26 18:25 ` Roland McGrath 2012-04-26 18:25 ` Roland McGrath 2012-04-27 23:54 ` Paul Eggert [not found] ` <20120426182524.E5ADF2C0EC-j1d2VQoJOwwHfwO+Tb3JRVaTQe2KTcn/@public.gmane.org> 2012-04-26 21:54 ` David Howells 2012-04-26 21:54 ` David Howells [not found] ` <9931.1335477281-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-04-26 22:02 ` Roland McGrath 2012-04-26 22:02 ` Roland McGrath 2012-04-26 22:21 ` Nix 2012-04-26 14:25 ` David Howells 2012-04-26 14:54 ` Steve French [not found] ` <CAH2r5mv1Lijdwk5zsQwYJr4Etb6fhrRyNXm-iFCQX+HecboGrQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2012-04-26 15:25 ` Myklebust, Trond 2012-04-26 15:25 ` Myklebust, Trond 2012-04-26 16:56 ` Steve French 2012-04-26 16:56 ` Steve French [not found] ` <CAH2r5mt5af-_hxBRKK72iD5Gr99bo91ec78Rov8EGVEx8=21mA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2012-04-26 17:00 ` Myklebust, Trond 2012-04-26 17:00 ` Myklebust, Trond 2012-04-26 17:03 ` Steve French 2012-04-26 17:03 ` Steve French [not found] ` <CAH2r5mvmCfLrxRHje6Wx5X84zxPEHwRMUJGsjvWBujMu7w841w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2012-04-26 17:06 ` Myklebust, Trond 2012-04-26 17:06 ` Myklebust, Trond [not found] ` <1335460011.9701.30.camel-SyLVLa/KEI9HwK5hSS5vWB2eb7JE58TQ@public.gmane.org> 2012-04-26 17:09 ` Steve French 2012-04-26 17:09 ` Steve French [not found] ` <CAH2r5muXk+frkFz9X523Ny=RMwJGeqOPH75G1ToNa5QoMo5SkQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2012-04-26 17:10 ` Steve French 2012-04-26 17:10 ` Steve French 2012-04-26 21:57 ` David Howells 2012-04-26 21:57 ` David Howells [not found] ` <10104.1335477476-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-04-26 22:05 ` Roland McGrath [this message] 2012-04-26 22:05 ` Roland McGrath [not found] ` <20120426220552.D98D62C0D3-j1d2VQoJOwwHfwO+Tb3JRVaTQe2KTcn/@public.gmane.org> 2012-04-27 0:33 ` Myklebust, Trond 2012-04-27 0:33 ` Myklebust, Trond 2012-04-27 0:30 ` Myklebust, Trond 2012-04-27 0:30 ` Myklebust, Trond 2012-04-26 15:52 ` David Howells 2012-04-27 0:29 ` Andreas Dilger 2012-04-27 0:29 ` Andreas Dilger [not found] ` <3F302713-B675-4BAA-B2B7-235E03C5975F-m1MBpc4rdrD3fQ9qLvQP4Q@public.gmane.org> 2012-04-27 9:19 ` David Howells 2012-04-27 9:19 ` David Howells [not found] ` <20120419140558.17272.74360.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org> 2012-04-19 14:06 ` [PATCH 1/6] xstat: Add a pair of system calls to make extended file stats available David Howells 2012-04-19 14:06 ` David Howells 2012-04-19 23:36 ` Andreas Dilger [not found] ` <20120419140612.17272.57774.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org> 2012-04-24 21:29 ` J. Bruce Fields 2012-04-24 21:29 ` J. Bruce Fields [not found] ` <20120424212911.GA26073-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org> 2012-04-24 22:08 ` Steve French 2012-04-24 22:08 ` Steve French 2012-04-25 14:44 ` Andreas Dilger 2012-04-25 14:44 ` Andreas Dilger 2012-04-26 13:45 ` David Howells [not found] ` <18765.1335447954-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-04-26 14:28 ` J. Bruce Fields 2012-04-26 14:28 ` J. Bruce Fields 2012-04-26 17:06 ` Steve French 2012-04-26 17:06 ` Steve French 2012-04-26 13:32 ` David Howells [not found] ` <18195.1335447156-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-04-27 0:51 ` Dave Chinner 2012-04-27 0:51 ` Dave Chinner 2012-04-27 3:11 ` Andreas Dilger 2012-04-27 3:11 ` Andreas Dilger 2012-04-26 13:40 ` David Howells [not found] ` <18533.1335447617-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-04-26 14:23 ` J. Bruce Fields 2012-04-26 14:23 ` J. Bruce Fields 2012-04-30 16:27 ` Ben Hutchings 2012-04-30 20:15 ` David Howells 2012-04-30 20:30 ` J. Bruce Fields 2012-04-30 23:31 ` Ben Hutchings 2012-04-19 14:06 ` [PATCH 2/6] xstat: Ext4: Return extended attributes David Howells 2012-04-19 14:06 ` David Howells [not found] ` <20120419140625.17272.23303.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org> 2012-04-19 16:03 ` Steve French 2012-04-19 16:03 ` Steve French 2012-04-26 13:47 ` David Howells 2012-04-26 17:00 ` Steve French 2012-04-26 17:00 ` Steve French 2012-04-19 14:07 ` [PATCH 6/6] xstat: eCryptFS: " David Howells 2012-04-19 14:07 ` David Howells 2012-04-19 17:11 ` [PATCH 0/6] Extended file stat system call Steve French 2012-04-19 17:11 ` Steve French 2012-04-27 1:06 ` Dave Chinner 2012-04-27 1:06 ` Dave Chinner 2012-04-27 3:22 ` Andreas Dilger [not found] ` <ED5B8F1B-6C99-4516-85FA-A767E94B635F-m1MBpc4rdrD3fQ9qLvQP4Q@public.gmane.org> 2012-04-28 0:38 ` Dave Chinner 2012-04-28 0:38 ` Dave Chinner 2012-04-28 0:54 ` Steve French 2012-05-08 20:19 ` Extended file stat: Splitting file- and fs-specific info? David Howells 2012-05-08 20:19 ` David Howells 2012-05-08 21:13 ` Myklebust, Trond 2012-05-08 21:13 ` Myklebust, Trond [not found] ` <16281.1336508382-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-05-09 0:24 ` Dave Chinner 2012-05-09 0:24 ` Dave Chinner 2012-05-09 1:09 ` J. Bruce Fields 2012-05-09 1:09 ` J. Bruce Fields 2012-05-09 4:25 ` Dave Chinner 2012-05-09 11:14 ` J. Bruce Fields 2012-05-09 11:14 ` J. Bruce Fields 2012-05-09 1:16 ` Andreas Dilger 2012-05-09 1:16 ` Andreas Dilger 2012-05-10 9:23 ` David Howells [not found] ` <14477.1336641794-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-05-10 16:05 ` Andreas Dilger 2012-05-10 16:05 ` Andreas Dilger 2012-05-10 17:10 ` Roland McGrath 2012-05-10 17:10 ` Roland McGrath 2012-05-11 8:54 ` Andreas Dilger 2012-05-09 9:21 ` David Howells 2012-05-09 9:21 ` David Howells [not found] ` <20170.1336555274-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-05-09 11:19 ` Christoph Hellwig 2012-05-09 11:19 ` Christoph Hellwig [not found] ` <20120509111958.GA11345-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> 2012-05-09 11:55 ` Bernd Schubert 2012-05-09 11:55 ` Bernd Schubert [not found] ` <4FAA5B24.1020306-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org> 2012-05-09 12:05 ` Christoph Hellwig 2012-05-09 12:05 ` Christoph Hellwig [not found] ` <20120509120544.GA17535-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> 2012-05-09 12:25 ` Bernd Schubert 2012-05-09 12:25 ` Bernd Schubert 2012-05-09 13:51 ` Andreas Dilger 2012-05-09 14:12 ` Bernd Schubert 2012-05-10 9:14 ` David Howells 2012-05-10 9:14 ` David Howells 2012-04-27 9:39 ` [PATCH 0/6] Extended file stat system call David Howells [not found] ` <4111.1335519545-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2012-04-27 13:13 ` Dave Chinner 2012-04-27 13:13 ` Dave Chinner 2012-04-27 15:10 ` J. Bruce Fields [not found] ` <20120427151057.GA16580-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org> 2012-04-27 16:32 ` Steve French 2012-04-27 16:32 ` Steve French 2012-04-27 19:31 ` Andreas Dilger 2012-04-28 0:58 ` Dave Chinner 2012-05-10 9:51 ` David Howells
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