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[CIFS] cifs export operations

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For nfsd to work over cifs mounts (which presumably makes sense when trying
to reexport mounts to windows, network appliances or Samba servers to nfs
clients via nfs server).

This is the first stage of that enablement, marked experimental and turned
off by default.

Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2007-02-27 05:09:35 +00:00
parent ba6a46a03f
commit 35c11fdda7
3 changed files with 18 additions and 12 deletions
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2
fs/cifs/Makefile
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@ -3,4 +3,4 @@
#
obj-$(CONFIG_CIFS) += cifs.o
cifs-objs := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o link.o misc.o netmisc.o smbdes.o smbencrypt.o transport.o asn1.o md4.o md5.o cifs_unicode.o nterr.o xattr.o cifsencrypt.o fcntl.o readdir.o ioctl.o sess.o
cifs-objs := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o link.o misc.o netmisc.o smbdes.o smbencrypt.o transport.o asn1.o md4.o md5.o cifs_unicode.o nterr.o xattr.o cifsencrypt.o fcntl.o readdir.o ioctl.o sess.o export.o

16
fs/cifs/TODO
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@ -18,7 +18,9 @@ better)
d) Kerberos/SPNEGO session setup support - (started)
e) NTLMv2 authentication (mostly implemented)
e) NTLMv2 authentication (mostly implemented - double check
that NTLMv2 signing works, also need to cleanup now unneeded SessSetup code in
fs/cifs/connect.c)
f) MD5-HMAC signing SMB PDUs when SPNEGO style SessionSetup
used (Kerberos or NTLMSSP). Signing alreadyimplemented for NTLM
@ -88,11 +90,12 @@ w) Finish up the dos time conversion routines needed to return old server
time to the client (default time, of now or time 0 is used now for these
very old servers)
x) Add support for OS/2 (LANMAN 1.2 and LANMAN2.1 based SMB servers)
x) In support for OS/2 (LANMAN 1.2 and LANMAN2.1 based SMB servers)
need to add ability to set time to server (utimes command)
y) Finish testing of Windows 9x/Windows ME server support (started).
KNOWN BUGS (updated April 29, 2005)
KNOWN BUGS (updated February 26, 2007)
====================================
See http://bugzilla.samba.org - search on product "CifsVFS" for
current bug list.
@ -107,11 +110,6 @@ but recognizes them
succeed but still return access denied (appears to be Windows
server not cifs client problem) and has not been reproduced recently.
NTFS partitions do not have this problem.
4) debug connectathon lock test case 10 which fails against
Samba (may be unmappable due to POSIX to Windows lock model
differences but worth investigating). Also debug Samba to
see why lock test case 7 takes longer to complete to Samba
than to Windows.
Misc testing to do
==================
@ -119,7 +117,7 @@ Misc testing to do
types. Try nested symlinks (8 deep). Return max path name in stat -f information
2) Modify file portion of ltp so it can run against a mounted network
share and run it against cifs vfs.
share and run it against cifs vfs in automated fashion.
3) Additional performance testing and optimization using iozone and similar -
there are some easy changes that can be done to parallelize sequential writes,

12
fs/cifs/cifsfs.c
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@ -1,7 +1,7 @@
/*
* fs/cifs/cifsfs.c
*
* Copyright (C) International Business Machines Corp., 2002,2004
* Copyright (C) International Business Machines Corp., 2002,2007
* Author(s): Steve French (sfrench@us.ibm.com)
*
* Common Internet FileSystem (CIFS) client
@ -47,7 +47,11 @@
#ifdef CONFIG_CIFS_QUOTA
static struct quotactl_ops cifs_quotactl_ops;
#endif
#endif /* QUOTA */
#ifdef CONFIG_CIFS_EXPERIMENTAL
extern struct export_operations cifs_export_ops;
#endif /* EXPERIMENTAL */
int cifsFYI = 0;
int cifsERROR = 1;
@ -110,6 +114,10 @@ cifs_read_super(struct super_block *sb, void *data,
sb->s_magic = CIFS_MAGIC_NUMBER;
sb->s_op = &cifs_super_ops;
#ifdef CONFIG_CIFS_EXPERIMENTAL
if(experimEnabled != 0)
sb->s_export_op = &cifs_export_ops;
#endif /* EXPERIMENTAL */
/* if(cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512)
sb->s_blocksize = cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */
#ifdef CONFIG_CIFS_QUOTA