Re: [Yaffs] 2.6.34 yaffs_follow_link problem

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Author: fs p
Date:  
To: Charles Manning
CC: yaffs
Subject: Re: [Yaffs] 2.6.34 yaffs_follow_link problem
it works, thank you;

2010/8/9 Charles Manning <>

> Hello
>
> I have been sent the attached patch (attached)
>
> I have been struggling to get my test board up and running 2.6.34 and will
> test it as soon as I can.
>
> In the mean time others can test this and see if it fixes the problem.
>
>
> -- Charles
>
> On Monday 09 August 2010 15:11:34 fs p wrote:
> > kernel 2.6.34 ; yaffs_guts.c,v 1.79 2009/03/05 01:45:28
> > VFS not found the symbol link on yaffs2 file system
> >
> > #cd /mnt/bin
> > #ln -s busybox sl2bbx
> > #./sl2bbx
> > -sh: ./sl2bbx: not found
> > #cd /usr/sbin
> > #ln -s nanddump sl2ndmp
> > #./sl2ndmp
> > -sh: ./sl2ndmp: not found
> >
> > turn on os trace:
> >
> > # cd /mnt/bin
> > # ./sl2bbx
> > [ 1064.080000] yaffs locking
> > [ 1064.080000] yaffs locked
> > [ 1064.080000] yaffs_lookup for 261:sl2bbx
> > [ 1064.080000] yaffs unlocking
> > [ 1064.090000] yaffs_lookup found 590
> > [ 1064.090000] yaffs_get_inode for object 590
> > [ 1064.090000] yaffs_iget for 590
> > [ 1064.100000] yaffs locking
> > [ 1064.100000] yaffs locked
> > [ 1064.100000] yaffs_FillInode mode a1ff uid 0 gid 0 size 7 count 1
> > [ 1064.110000] yaffs unlocking
> > [ 1064.110000] yaffs_loookup dentry
> > [ 1064.120000] yaffs locking
> > [ 1064.120000] yaffs locked
> > [ 1064.120000] yaffs unlocking
> > [ 1064.130000] yaffs locking
> > [ 1064.130000] yaffs locked
> > [ 1064.130000] yaffs_lookup for 261:`q@sbox                   //fisrt 4
> byte is wrong
> > , right is busybox
> > [ 1064.140000] yaffs unlocking
> > [ 1064.140000] yaffs_lookup not found
> > -sh: ./sl2bbx: not found

> >
> > in yaffs_follow_link:
> >
> >     alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry));    //
> > alias  value is busybox

> >
> >     kfree(alias);     //-----NOTE here ,after free alias, now the memory
> > hold alias is    `q@sbox

> >
> >
> > return form yaffs_follow_link ,back to VFS ,and finally goto
> yaffs_lookup:
> >
> > in yaffs_lookup:
> >
> >       T(YAFFS_TRACE_OS,
> >         ( "yaffs_lookup for %d:%s\n",
> >          yaffs_InodeToObject(dir)->objectId, dentry->d_name.name));

> >
> >
> >       } else {
> >               T(YAFFS_TRACE_OS, ( "yaffs_lookup not found\n"));

> >
> >       }

> >
> >       //------NOTE HERE dentry->d_name.name is `q@sbox ,so we canot get
> the
> > real yaffs object(which should be busybox)

> >
> >
> >
> >
> > I think this is a problem of yaffs_follw_link, is there somebody else
> > get the same result?
> > Charles can you give some tip?
> >
> > _______________________________________________
> > yaffs mailing list
> >
> > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs
>
>
>