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From: Duy Nguyen <pclouds@gmail.com>
To: "Torsten Bögershausen" <tboegi@web.de>
Cc: "Jeff Hostetler" <git@jeffhostetler.com>,
	"Git Mailing List" <git@vger.kernel.org>,
	"Junio C Hamano" <gitster@pobox.com>,
	"Elijah Newren" <newren@gmail.com>,
	"Paweł Paruzel" <pawelparuzel95@gmail.com>,
	"Jeff King" <peff@peff.net>,
	"brian m. carlson" <sandals@crustytoothpaste.net>,
	"SZEDER Gábor" <szeder.dev@gmail.com>
Subject: Re: [PATCH v4] clone: report duplicate entries on case-insensitive filesystems
Date: Wed, 15 Aug 2018 21:35:41 +0200	[thread overview]
Message-ID: <CACsJy8AYQL3oDLyt14eJ1emynngqKQv9GXju56gU9u4mHrFHOg@mail.gmail.com> (raw)
In-Reply-To: <20180815190816.GA26521@tor.lan>

On Wed, Aug 15, 2018 at 9:08 PM Torsten Bögershausen <tboegi@web.de> wrote:
> > +#if !defined(GIT_WINDOWS_NATIVE) /* inode is always zero on Windows */
> > +     for (i = 0; i < state->istate->cache_nr; i++) {
> > +             struct cache_entry *dup = state->istate->cache[i];
> > +
> > +             if (dup == ce)
> > +                     break;
> > +
> > +             if (dup->ce_flags & (CE_MATCHED | CE_VALID | CE_SKIP_WORKTREE))
> > +                     continue;
> > +
>
> Should the following be protected by core.checkstat ?
>         if (check_stat) {

Good catch! st_ino is ignored if core.checkStat is false. I will
probably send a separate patch to add more details to config.txt about
this key.

> > +             if (dup->ce_stat_data.sd_ino == st->st_ino) {
> > +                     dup->ce_flags |= CE_MATCHED;
> > +                     break;
> > +             }
> > +     }
> > +#endif
>
> Another thing is that we switch of the ASCII case-folding-detection-logic
> off for Windows users, even if we otherwise rely on icase.
> I think we can use fspathcmp() as a fallback. when inodes fail,
> because we may be on a network file system.

I admit I did not think about network file system. Will spend some
time (and hopefully not on nfs kernel code) on it.

For falling back on fspathcmp even on Windows, is it really safe? I'm
on Linux and never have to deal with this issue to have any
experience. It does sound good though because it should be a subset
for any "weird" filesystems out there.

> (I don't have a test setup at the moment, but what happens with inodes
> when a Windows machine exports a share to Linux or Mac ?)
>
> Is there a chance to get the fspathcmp() back, like this ?
>
> static void mark_colliding_entries(const struct checkout *state,
>                                    struct cache_entry *ce, struct stat *st)
> {
>         int i;
>         ce->ce_flags |= CE_MATCHED;
>
>         for (i = 0; i < state->istate->cache_nr; i++) {
>                 struct cache_entry *dup = state->istate->cache[i];
>                 int folded = 0;
>
>                 if (dup == ce)
>                         break;
>
>                 if (dup->ce_flags & (CE_MATCHED | CE_VALID | CE_SKIP_WORKTREE))
>                         continue;
>
>                 if (!fspathcmp(dup->name, ce->name))
>                         folded = 1;
>
> #if !defined(GIT_WINDOWS_NATIVE) /* inode is always zero on Windows */
>                 if (check_stat && (dup->ce_stat_data.sd_ino == st->st_ino))
>                         folded = 1;
> #endif
>                 if (folded) {
>                         dup->ce_flags |= CE_MATCHED;
>                         break;
>                 }
>         }
> }
>


-- 
Duy

  reply	other threads:[~2018-08-15 19:36 UTC|newest]

Thread overview: 96+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-27  9:59 Git clone and case sensitivity Paweł Paruzel
2018-07-27 20:59 ` brian m. carlson
2018-07-28  4:36   ` Duy Nguyen
2018-07-28  4:45     ` Duy Nguyen
2018-07-28  4:48       ` Jeff King
2018-07-28  5:11         ` Duy Nguyen
2018-07-28  9:48           ` Simon Ruderich
2018-07-28  9:56           ` Jeff King
2018-07-28 18:05             ` brian m. carlson
2018-07-29  5:26             ` Duy Nguyen
2018-07-29  9:28               ` Jeff King
2018-07-30 15:27                 ` [PATCH/RFC] clone: report duplicate entries on case-insensitive filesystems Nguyễn Thái Ngọc Duy
2018-07-31 18:23                   ` Torsten Bögershausen
2018-08-01 15:25                     ` Duy Nguyen
2018-07-31 18:44                   ` Elijah Newren
2018-07-31 19:12                     ` Junio C Hamano
2018-07-31 19:29                       ` Jeff King
2018-07-31 20:12                         ` Junio C Hamano
2018-07-31 20:37                           ` Jeff King
2018-07-31 20:57                             ` Junio C Hamano
2018-08-01 21:20                               ` Junio C Hamano
2018-08-02 14:43                                 ` Duy Nguyen
2018-08-02 16:27                                   ` Junio C Hamano
2018-08-02 19:06                                     ` Jeff King
2018-08-02 21:14                                       ` Junio C Hamano
2018-08-02 21:28                                         ` Jeff King
2018-08-03 18:23                                           ` Jeff Hostetler
2018-08-03 18:49                                             ` Junio C Hamano
2018-08-03 18:53                                             ` Jeff King
2018-08-05 14:01                                               ` Jeff Hostetler
2018-08-03 14:28                                   ` Torsten Bögershausen
2018-08-01 15:21                     ` Duy Nguyen
2018-07-31 19:13                   ` Junio C Hamano
2018-08-01 15:16                     ` Duy Nguyen
2018-08-07 19:01                   ` [PATCH v2] " Nguyễn Thái Ngọc Duy
2018-08-07 19:31                     ` Junio C Hamano
2018-08-08 19:48                       ` Jeff Hostetler
2018-08-08 22:31                         ` Jeff King
2018-08-09  0:41                           ` Junio C Hamano
2018-08-09 14:23                             ` Jeff King
2018-08-09 21:14                               ` Jeff Hostetler
2018-08-09 21:34                                 ` Jeff King
2018-08-09 21:40                                 ` Elijah Newren
2018-08-09 21:44                                   ` Jeff King
2018-08-09 21:53                                     ` Elijah Newren
2018-08-09 21:59                                       ` Jeff King
2018-08-09 23:05                                         ` Elijah Newren
2018-08-09 22:07                                   ` Junio C Hamano
2018-08-10 15:36                     ` [PATCH v3 0/1] clone: warn on colidding entries on checkout Nguyễn Thái Ngọc Duy
2018-08-10 15:36                       ` [PATCH v3 1/1] clone: report duplicate entries on case-insensitive filesystems Nguyễn Thái Ngọc Duy
2018-08-10 16:42                         ` Junio C Hamano
2018-08-11 10:09                         ` SZEDER Gábor
2018-08-11 13:16                           ` Duy Nguyen
2018-08-13 16:55                             ` Junio C Hamano
2018-08-13 17:12                               ` Duy Nguyen
2018-08-10 16:12                       ` [PATCH v3 0/1] clone: warn on colidding entries on checkout Junio C Hamano
2018-08-12  9:07                       ` [PATCH v4] clone: report duplicate entries on case-insensitive filesystems Nguyễn Thái Ngọc Duy
2018-08-13 15:32                         ` Jeff Hostetler
2018-08-13 17:18                         ` Junio C Hamano
2018-08-15 19:08                         ` Torsten Bögershausen
2018-08-15 19:35                           ` Duy Nguyen [this message]
2018-08-16 15:56                             ` [PATCH] config.txt: clarify core.checkStat = minimal Nguyễn Thái Ngọc Duy
2018-08-16 17:01                               ` Junio C Hamano
2018-08-16 18:19                                 ` Duy Nguyen
2018-08-16 22:29                                   ` Junio C Hamano
2018-08-17 15:26                                   ` Junio C Hamano
2018-08-17 15:29                                     ` Duy Nguyen
2018-08-15 19:38                           ` [PATCH v4] clone: report duplicate entries on case-insensitive filesystems Junio C Hamano
2018-08-16 14:03                             ` Torsten Bögershausen
2018-08-16 15:42                               ` Duy Nguyen
2018-08-16 16:23                               ` Junio C Hamano
2018-08-17 16:16                         ` [PATCH v5] " Nguyễn Thái Ngọc Duy
2018-08-17 17:20                           ` Junio C Hamano
2018-08-17 18:00                             ` Duy Nguyen
2018-08-17 19:46                           ` Torsten Bögershausen
2018-11-19  8:20                           ` Carlo Marcelo Arenas Belón
2018-11-19 12:28                             ` Torsten Bögershausen
2018-11-19 17:14                               ` Carlo Arenas
2018-11-19 18:24                                 ` Duy Nguyen
2018-11-19 21:03                                   ` Duy Nguyen
2018-11-19 21:04                                     ` Duy Nguyen
2018-11-19 21:17                                     ` Duy Nguyen
2018-11-19 23:29                                     ` Ramsay Jones
2018-11-19 23:54                                       ` Ramsay Jones
2018-11-20  1:05                                         ` Carlo Arenas
2018-11-20  2:22                                     ` Junio C Hamano
2018-11-20 16:28                                       ` [PATCH] clone: fix colliding file detection on APFS Nguyễn Thái Ngọc Duy
2018-11-20 19:20                                         ` Ramsay Jones
2018-11-20 19:35                                         ` Carlo Arenas
2018-11-20 19:38                                           ` Duy Nguyen
2018-11-22 17:59                                         ` [PATCH v1 1/1] t5601-99: Enable colliding file detection for MINGW tboegi
2018-11-22 20:16                                           ` Carlo Marcelo Arenas Belón
2018-11-23 11:24                                             ` Johannes Schindelin
2018-11-19 17:21                               ` [PATCH v5] clone: report duplicate entries on case-insensitive filesystems Ramsay Jones
2018-11-19 19:39                                 ` Carlo Arenas
2018-07-31 19:39                 ` Git clone and case sensitivity Jeff Hostetler

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