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Message-ID: <4060BDC0.8070009@ianbrandt.com>
Date: Tue, 23 Mar 2004 17:44:16 -0500
From: Ian Brandt <ian AT ianbrandt DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: Definitely no sshd on FAT32?
References: <40608855 DOT 8080605 AT ianbrandt DOT com> <Pine DOT GSO DOT 4 DOT 56 DOT 0403231441420 DOT 19995 AT slinky DOT cs DOT nyu DOT edu> <40609FD8 DOT 5030103 AT ianbrandt DOT com> <20040323215100 DOT GY17229 AT cygbert DOT vinschen DOT de>
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Corinna Vinschen wrote:
> The following checks are performed on the key file in the following order:
> 
> - Not Windows NT? Yes -> Don't check permissions.

I'm running Windows 2000, so this shouldn't catch.

> - "ntea" switched on? Yes -> Check permissions.  (Not applicable on FAT32)

I don't have it set, and according to the docs it's off by default, and 
I'm on FAT32 anyway.

> - statfs(key_file) fails? Yes -> Check permissions.

I'm not familiar with this one, but I found a man page for statfs on my 
linux server.  Unless FAT32 is represented by some cryptic name in the 
following file types (MSDOS_SUPER_MAGIC perhaps?), I'm guessing statfs 
fails on FAT32?

File system types:

   ADFS_SUPER_MAGIC      0xadf5
   AFFS_SUPER_MAGIC      0xADFF
   BEFS_SUPER_MAGIC      0x42465331
   BFS_MAGIC             0x1BADFACE
   CIFS_MAGIC_NUMBER     0xFF534D42
   CODA_SUPER_MAGIC      0x73757245
   COH_SUPER_MAGIC       0x012FF7B7
   CRAMFS_MAGIC          0x28cd3d45
   DEVFS_SUPER_MAGIC     0x1373
   EFS_SUPER_MAGIC       0x00414A53
   EXT_SUPER_MAGIC       0x137D
   EXT2_OLD_SUPER_MAGIC  0xEF51
   EXT2_SUPER_MAGIC      0xEF53
   EXT3_SUPER_MAGIC      0xEF53
   HFS_SUPER_MAGIC       0x4244
   HPFS_SUPER_MAGIC      0xF995E849
   HUGETLBFS_MAGIC       0x958458f6
   ISOFS_SUPER_MAGIC     0x9660
   JFFS2_SUPER_MAGIC     0x72b6
   JFS_SUPER_MAGIC       0x3153464a
   MINIX_SUPER_MAGIC     0x137F /* orig. minix */
   MINIX_SUPER_MAGIC2    0x138F /* 30 char minix */
   MINIX2_SUPER_MAGIC    0x2468 /* minix V2 */
   MINIX2_SUPER_MAGIC2   0x2478 /* minix V2, 30 char names */
   MSDOS_SUPER_MAGIC     0x4d44
   NCP_SUPER_MAGIC       0x564c
   NFS_SUPER_MAGIC       0x6969
   NTFS_SB_MAGIC         0x5346544e
   OPENPROM_SUPER_MAGIC  0x9fa1
   PROC_SUPER_MAGIC      0x9fa0
   QNX4_SUPER_MAGIC      0x002f
   REISERFS_SUPER_MAGIC  0x52654973
   ROMFS_MAGIC           0x7275
   SMB_SUPER_MAGIC       0x517B
   SYSV2_SUPER_MAGIC     0x012FF7B6
   SYSV4_SUPER_MAGIC     0x012FF7B5
   TMPFS_MAGIC           0x01021994
   UDF_SUPER_MAGIC       0x15013346
   UFS_MAGIC             0x00011954
   USBDEVICE_SUPER_MAGIC 0x9fa2
   VXFS_SUPER_MAGIC      0xa501FCF5
   XENIX_SUPER_MAGIC     0x012FF7B4
   XFS_SUPER_MAGIC       0x58465342
   _XIAFS_SUPER_MAGIC    0x012FD16D

> - Does the file system support ACLs?             (Shoud be only NTFS)
>   Yes -> "ntsec" switched on ?
>          Yes -> Check permissions

This shouldn't catch.  I tried nontsec just in case, but no change.

> - Don't check permissions

Well, we didn't get here.  I tried passing 3 -d's to sshd, but the only 
added messages compared to what I posted originally were:

debug2: read_server_config: filename /etc/sshd_config
debug1: sshd version OpenSSH_3.8p1

So no help there.

> Try to figure out what happens on your system.  However, if you're
> running 2K or XP, I don't see a reason to keep FAT32.  You can convert
> it to NTFS using the "convert" tool which is shipped with all NT versions.

I lost a NTFS drive once to electrical failure, and I didn't have a 
current backup.  It cost 5X as much to get the data recovered off the 
platters than if it had been FAT32.  Of course it's my fault for not 
backing up regularly enough, but still.  That and I'd have to trust that 
the conversion doesn't introduce any problems.  Not a big deal, but if I 
don't have to do it I'd rather not.

Thanks,

Ian

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