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Re: [PATCH -V18 05/13] vfs: Support null pathname in readlink

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From: Christoph Hellwig
Subject: Re: [PATCH -V18 05/13] vfs: Support null pathname in readlink
Date: Friday, August 20, 2010 - 1:32 am

Changing the interfaces of existing system calls to accept a NULL name
which previously wasn't acceptable is not valid.  Even for new system
calls I think it's a bad idea.  utimensat already has the most ugly
code of all fs related system calls because of that.

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[PATCH -V18 0/13] Generic name to handle and open by handl ..., Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 01/13] exportfs: Return the minimum required h ..., Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 02/13] vfs: Add name to file handle conversion ..., Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 03/13] vfs: Add open by file handle support, Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 04/13] vfs: Allow handle based open on symlinks, Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 05/13] vfs: Support null pathname in readlink, Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 06/13] vfs: Support null pathname in faccessat, Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 07/13] vfs: Support null pathname in linkat, Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 08/13] x86: Add new syscalls for x86_32, Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 09/13] x86: Add new syscalls for x86_64, Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 10/13] unistd.h: Add new syscalls numbers to a ..., Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 11/13] vfs: Export file system uuid via /proc/ ..., Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 12/13] ext3: Copy fs UUID to superblock., Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
[PATCH -V18 13/13] ext4: Copy fs UUID to superblock, Aneesh Kumar K.V, (Thu Aug 19, 6:51 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Thu Aug 19, 7:13 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Thu Aug 19, 11:53 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Christoph Hellwig, (Fri Aug 20, 1:30 am)
Re: [PATCH -V18 05/13] vfs: Support null pathname in readlink, Christoph Hellwig, (Fri Aug 20, 1:32 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Neil Brown, (Fri Aug 20, 2:53 am)
Re: [PATCH -V18 05/13] vfs: Support null pathname in readlink, Neil Brown, (Fri Aug 20, 3:04 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Al Viro, (Fri Aug 20, 4:51 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Peter Zijlstra, (Fri Aug 20, 6:25 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Fri Aug 20, 7:38 am)
Re: [PATCH -V18 05/13] vfs: Support null pathname in readlink, Aneesh Kumar K. V, (Fri Aug 20, 7:43 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Neil Brown, (Fri Aug 20, 4:47 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Neil Brown, (Fri Aug 20, 5:09 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Nick Piggin, (Sat Aug 21, 1:30 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Sat Aug 21, 2:31 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Sat Aug 21, 2:32 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Sat Aug 21, 2:42 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Sat Aug 21, 7:02 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Neil Brown, (Sun Aug 22, 4:06 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Neil Brown, (Sun Aug 22, 4:17 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Sun Aug 22, 6:24 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Neil Brown, (Sun Aug 22, 6:52 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Sun Aug 22, 7:49 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Nick Piggin, (Tue Aug 24, 12:21 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Bastien ROUCARIES, (Tue Aug 24, 2:41 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Tue Aug 24, 3:34 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Aneesh Kumar K. V, (Tue Aug 24, 3:40 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., J. Bruce Fields, (Tue Aug 24, 6:19 am)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Neil Brown, (Tue Aug 24, 7:04 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Neil Brown, (Tue Aug 24, 7:06 pm)
Re: [PATCH -V18 04/13] vfs: Allow handle based open on sym ..., Bastien ROUCARIES, (Wed Aug 25, 2:13 am)