Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/fs/locks.c b/fs/locks.c
index 60f3ce8..86f3a93 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1758,6 +1758,12 @@ SYSCALL_DEFINE2(flock, unsigned int, fd, unsigned int,
cmd)
goto
that maps them into O_DENY* flags and make them visible for
applications on mounts with sharelock option.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 1 +
fs/nfsd/nfs4state.c | 46 +-
fs/nfsd/nfsproc.c | 1 +
3 files changed, 47
by passing these flags to NFSv4 open request. Make it return
-ESHAREDENIED on share conflicts with other opens and disable
O_DENYDELETE support since NFSv4 doesn't support it.
Signed-off-by: Pavel Shilovsky
---
fs/nfs/dir.c | 4
fs/nfs/internal.h | 3 ++-
fs/nfs/nfs4file.c
: Pavel Shilovsky
---
fs/cifs/cifsfs.c | 2 +-
fs/cifs/cifsglob.h | 16 +++-
fs/cifs/dir.c | 4
fs/cifs/file.c | 15 +--
fs/cifs/inode.c| 5 +++--
fs/cifs/netmisc.c | 2 +-
fs/cifs/smb2maperror.c | 2 +-
fs/locks.c
and simplify CIFSSMBOpen params.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/cifsacl.c | 8
fs/cifs/cifsglob.h | 2 +-
fs/cifs/cifsproto.h | 8
fs/cifs/cifssmb.c | 50 +++---
fs/cifs/dir.c | 12 ++--
fs/cifs
Introduce new LOCK_DELETE flock flag that is suggested to be used
internally only to map O_DENYDELETE open flag:
!O_DENYDELETE -> LOCK_DELETE | LOCK_MAND.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 55 +---
fs/name
es on newly
created files: when open with O_CREAT can return -ESHAREDENIED error
for successfully created files due to a sharelock set by another task.
Temporary disable O_DENYDELETE support - will enable it in further
patches.
Signed-off-by: Pavel Shilovsky
---
arch/alpha/include/uapi/asm/err
done through flocks. If O_DENY* flags are specified, flock
syscall is processed after the open. The share modes are translated into flock
according the following rules:
1) !O_DENYREAD -> LOCK_READ | LOCK_MAND
2) !O_DENYWRITE -> LOCK_WRITE | LOCK_MAND
3) !O_DENYDELETE -> LOCK_DELETE | LOCK_MA
2013/6/11 Jeff Layton :
> On Fri, 26 Apr 2013 16:04:16 +0400
> Pavel Shilovsky wrote:
>
>> Introduce new LOCK_DELETE flock flag that is suggested to be used
>> internally only to map O_DENYDELETE open flag:
>>
>> !O_DENYDELETE -> LOCK_DELETE | LOCK_MAND.
2013/5/10 Jeff Layton :
> On Fri, 26 Apr 2013 16:04:16 +0400
> Pavel Shilovsky wrote:
>
>> Introduce new LOCK_DELETE flock flag that is suggested to be used
>> internally only to map O_DENYDELETE open flag:
>>
>> !O_DENYDELETE -> LOCK_DELETE | LOCK_MAND.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/fs/locks.c b/fs/locks.c
index 25c3a49..7d67e0e 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1756,6 +1756,12 @@ SYSCALL_DEFINE2(flock, unsigned int, fd, unsigned int,
cmd)
goto
: Pavel Shilovsky
---
fs/cifs/cifsfs.c | 2 +-
fs/cifs/cifsglob.h | 16 +++-
fs/cifs/dir.c | 4
fs/cifs/file.c | 15 +--
fs/cifs/inode.c| 5 +++--
fs/cifs/netmisc.c | 2 +-
fs/cifs/smb2maperror.c | 2 +-
fs/locks.c
k
syscall is processed after the open. The share modes are translated into flock
according the following rules:
1) !O_DENYREAD -> LOCK_READ | LOCK_MAND
2) !O_DENYWRITE -> LOCK_WRITE | LOCK_MAND
3) !O_DENYDELETE -> LOCK_DELETE | LOCK_MAND
-
Pavel Shilovsky (7):
VFS: Introduc
that maps them into O_DENY* flags and make them visible for
applications on mounts with sharelock option.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 1 +
fs/nfsd/nfs4state.c | 46 +-
fs/nfsd/nfsproc.c | 1 +
3 files changed, 47
by passing these flags to NFSv4 open request. Make it return
-ESHAREDENIED on share conflicts with other opens and disable
O_DENYDELETE support since NFSv4 doesn't support it.
Signed-off-by: Pavel Shilovsky
---
fs/nfs/dir.c | 4
fs/nfs/internal.h | 3 ++-
fs/nfs/nfs4file.c
and simplify CIFSSMBOpen params.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/cifsacl.c | 8
fs/cifs/cifsglob.h | 2 +-
fs/cifs/cifsproto.h | 8
fs/cifs/cifssmb.c | 50 +++---
fs/cifs/dir.c | 12 ++--
fs/cifs
Introduce new LOCK_DELETE flock flag that is suggested to be used
internally only to map O_DENYDELETE open flag:
!O_DENYDELETE -> LOCK_DELETE | LOCK_MAND.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 53 +---
fs/name
s on
newely created files: when open with O_CREAT can return -ESHAREDENIED
error for successfully created files due to a sharelock set by
another task.
Temporary disable O_DENYDELETE support - will enable it in further patches.
Signed-off-by: Pavel Shilovsky
---
fs/fcntl.c
/* use NT_CREATE_ANDX */
else
/* use TRANS2 OPEN */
--
Best regards,
Pavel Shilovsky.
2013/4/10 Jeff Layton :
> On Tue, 9 Apr 2013 16:40:21 +0400
> Pavel Shilovsky wrote:
>
>> This patch adds 3 flags:
>> 1) O_DENYREAD that doesn't permit read access,
>> 2) O_DENYWRITE that doesn't permit write access,
>> 3) O_DENYDELETE that doe
2013/4/10 Jeff Layton :
> On Tue, 9 Apr 2013 16:40:24 +0400
> Pavel Shilovsky wrote:
>
>> forcemand mount option now lets us use Windows mandatory style of
>> byte-range locks even if server supports posix ones - switches on
>> Windows locking mechanism. Share flags
that maps them into O_DENY flags and make them visible for
applications that use O_DENYMAND opens.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 1 +
fs/nfsd/nfs4state.c | 46 +-
2 files changed, 46 insertions(+), 1 deletion(-)
diff --git
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/fs/locks.c b/fs/locks.c
index 1402a43..a67857c 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1719,6 +1719,12 @@ SYSCALL_DEFINE2(flock, unsigned int, fd, unsigned int,
cmd)
if (!f.file
by passing these flags to NFSv4 open request. Also make it return
-EBUSY on share conflicts with other opens.
Signed-off-by: Pavel Shilovsky
---
fs/nfs/internal.h | 3 ++-
fs/nfs/nfs4proc.c | 4 +++-
fs/nfs/nfs4super.c | 9 ++---
fs/nfs/nfs4xdr.c | 21 +
fs/nfs
Windows locking mechanism in one
mount option by using NT_CREATE_ANDX to open files if forcemand is on.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/dir.c | 1 +
fs/cifs/file.c | 6 --
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index d4331de
Construct share_access value from O_DENY* flags and send it to
the server.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/cifsfs.c | 2 +-
fs/cifs/cifsglob.h | 16 +++-
fs/cifs/dir.c | 3 +++
fs/cifs/file.c | 4
fs/locks.c | 7 ++-
include/linux/fs.h | 1
and simplify CIFSSMBOpen params.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/cifsacl.c | 8
fs/cifs/cifsglob.h | 2 +-
fs/cifs/cifsproto.h | 8
fs/cifs/cifssmb.c | 50 +++---
fs/cifs/dir.c | 12 ++--
fs/cifs
races on
newely created files: when open with O_CREAT can return with -EBUSY
error for successfully created files due to a deny lock set by
another task.
Signed-off-by: Pavel Shilovsky
---
fs/fcntl.c | 5 ++-
fs/locks.c | 93 +++
rules:
1) !O_DENYREAD -> LOCK_READ | LOCK_MAND
2) !O_DENYWRITE -> LOCK_WRITE | LOCK_MAND
-
Pavel Shilovsky (7):
fcntl: Introduce new O_DENY* open flags
CIFS: Add share_access parm to open request
CIFS: Add O_DENY* open flags support
CIFS: Use NT_CREATE_ANDX command for forcemand mount
2013/4/8 Jeff Layton :
> On Fri, 5 Apr 2013 20:57:51 +0400
> Pavel Shilovsky wrote:
>
>> Construct share_access value from O_DENY* flags and send it to
>> the server.
>>
>> Signed-off-by: Pavel Shilovsky
>> ---
>> fs/cifs/cifsglob.h | 16 ++
2013/4/5 Pavel Shilovsky :
> Main changes from the previous one:
> 1) O_DENYMAND is removed, sharelock mount option is introduced.
> 2) Patch fcntl.h and VFS patches are united into one.
> 3) flock/LOCK_MAND is disabled for sharelock mounts.
>
> This patchset adds support of
races on
newely created files: when open with O_CREAT can return with -EBUSY
error for successfully created files due to a deny lock set by
another task.
Signed-off-by: Pavel Shilovsky
---
fs/fcntl.c | 5 ++-
fs/locks.c | 93 +++
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/fs/locks.c b/fs/locks.c
index ea5813c..8a59afb 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1722,6 +1722,12 @@ SYSCALL_DEFINE2(flock, unsigned int, fd, unsigned int,
cmd)
if (!f.file
that maps them into O_DENY flags and make them visible for
applications that use O_DENYMAND opens.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 1 +
fs/nfsd/nfs4state.c | 46 +-
2 files changed, 46 insertions(+), 1 deletion(-)
diff --git
by passing these flags to NFSv4 open request.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c| 6 +++---
fs/nfs/internal.h | 3 ++-
fs/nfs/nfs4proc.c | 2 ++
fs/nfs/nfs4xdr.c | 21 +
fs/nfs/super.c| 3 ++-
5 files changed, 26 insertions(+), 9 deletions
Construct share_access value from O_DENY* flags and send it to
the server.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/cifsglob.h | 16 +++-
fs/cifs/dir.c | 3 +++
fs/cifs/file.c | 4
fs/locks.c | 8
4 files changed, 30 insertions(+), 1 deletion
Windows locking mechanism in one
mount option by using NT_CREATE_ANDX to open files if forcemand is on.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/dir.c | 1 +
fs/cifs/file.c | 6 --
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index d4331de
and simplify CIFSSMBOpen params.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/cifsacl.c | 8
fs/cifs/cifsglob.h | 2 +-
fs/cifs/cifsproto.h | 8
fs/cifs/cifssmb.c | 50 +++---
fs/cifs/dir.c | 12 ++--
fs/cifs
is mechanism is done through flocks. If O_DENY* flags are specified, flock
syscall is processed after the open. The share modes are translated into flock
according the following rules:
1) !O_DENYREAD -> LOCK_READ | LOCK_MAND
2) !O_DENYWRITE -> LOCK_WRITE | LOCK_MAND
-
Pavel Shilovsky
later.
>
> Also, suppose there are changes in the future that require you to
> determine this before calling into ->open? Then you'll have to go back
> and somehow mark the fs anyway...
Ok, this makes sense, thanks. Will do it this way and repost.
--
Best regards,
Pavel Shilovsky.
2013/3/12 Jeff Layton :
> On Mon, 11 Mar 2013 14:54:34 -0400
> Jeff Layton wrote:
>
>> On Thu, 28 Feb 2013 19:25:32 +0400
>> Pavel Shilovsky wrote:
>>
>> > by passing these flags to NFSv4 open request.
>> >
>> > Signed-off-by:
2013/3/11 Jeff Layton :
> On Thu, 28 Feb 2013 19:25:31 +0400
> Pavel Shilovsky wrote:
>
>> to make it match CIFS and VFS variants.
>>
>> Signed-off-by: Pavel Shilovsky
>> ---
>> fs/cifs/smb2maperror.c | 2 +-
>> 1 file changed, 1 insertion
2013/3/11 Jeff Layton :
> On Thu, 28 Feb 2013 19:25:28 +0400
> Pavel Shilovsky wrote:
>
>> If O_DENYMAND flag is specified, O_DENYREAD/WRITE/MAND flags are
>> translated to flock's flags:
>>
>> !O_DENYREAD -> LOCK_READ
>> !O_DENYWRITE -> LOC
share locks. I doubt anyone sane actually uses
>> mandatory fcntl locks, but still I suppose it would probably be better
>> to play it safe and use a new mount option.
>
>
> Maybe we should have a -o win_semantics option :-)
>
> /me runs
>
(CC'ing Al Viro, since these patches should go through his tree)
I don't mind to introduce a new mount option for turning this feature
on/off - something like '-o denylock' to make it mathing names of new
flags would be ok.
Al, what do you think about this feature overall?
--
Best regards,
Pavel Shilovsky.
2013/3/1 Andy Lutomirski :
> [possible resend -- sorry]
>
> On 02/28/2013 07:25 AM, Pavel Shilovsky wrote:
>> This patchset adds support of O_DENY* flags for Linux fs layer. These flags
>> can be used by any application that needs share reservations to organize a
>> f
that maps them into O_DENY flags and make them visible for
applications that use O_DENYMAND opens.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 1 +
fs/nfsd/nfs4state.c | 46 +-
2 files changed, 46 insertions(+), 1 deletion(-)
diff --git
by passing these flags to NFSv4 open request.
Signed-off-by: Pavel Shilovsky
---
fs/nfs/nfs4xdr.c | 24
1 file changed, 20 insertions(+), 4 deletions(-)
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 26b1439..58ddc74 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs
to make it match CIFS and VFS variants.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/smb2maperror.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/smb2maperror.c b/fs/cifs/smb2maperror.c
index 494c912..11e589e 100644
--- a/fs/cifs/smb2maperror.c
+++ b/fs/cifs
Windows locking mechanism in one
mount option by using NT_CREATE_ANDX to open files if forcemand is on.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/dir.c | 1 +
fs/cifs/file.c | 6 --
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 6975072
Make CIFSSMBOpen take share_flags as a parm that allows us
to pass new O_DENY* flags to the server.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/cifsacl.c | 6 --
fs/cifs/cifsglob.h | 12 +++-
fs/cifs/cifsproto.h | 9 +
fs/cifs/cifssmb.c | 47
ged to prevent data races on
newely created files: when open with O_CREAT can return with -ETXTBSY
error for successfully created files due to a deny lock set by
another task.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 116 +++--
fs/na
ch flags -
this change can benefit cifs and nfs modules as well as Samba and
NFS file servers. These flags are only take affect for opens with
O_DENYMAND flags - there is no impact on native Linux opens.
Signed-off-by: Pavel Shilovsky
---
fs/fcntl.c | 5 +++--
include/u
e following rules:
1) O_DENYMAND -> LOCK_MAND
2) !O_DENYREAD -> LOCK_READ
3) !O_DENYWRITE -> LOCK_WRITE
-
Pavel Shilovsky (7):
fcntl: Introduce new O_DENY* open flags
vfs: Add O_DENYREAD/WRITE flags support for open syscall
CIFS: Add O_DENY* open flags support
CIFS: U
ast we go to 'opened' lable.
Then we have a 3(!) chances to return -1 while a file is created
(open_check_o_direct, ima_file_check, handle_truncate). In this case
these places are bugs too.
We can call vfs_unlink if we failed after a file was created, but
possible affects need to be investigated.
--
Best regards,
Pavel Shilovsky.
2013/2/7 J. Bruce Fields :
> On Thu, Feb 07, 2013 at 06:32:38PM +0400, Pavel Shilovsky wrote:
>> 2013/2/7 J. Bruce Fields :
>> > On Thu, Feb 07, 2013 at 01:53:46PM +0400, Pavel Shilovsky wrote:
>> >> Nothing prevents it. If somebody grabbed a share mode lock
2013/2/7 J. Bruce Fields :
> On Thu, Feb 07, 2013 at 01:53:46PM +0400, Pavel Shilovsky wrote:
>> Nothing prevents it. If somebody grabbed a share mode lock on a file
>> before we call deny_lock_file, we simply close this file and return
>> -ETXTBSY.
>
> But leave the ne
2013/2/5 J. Bruce Fields :
> On Tue, Feb 05, 2013 at 03:45:31PM +0400, Pavel Shilovsky wrote:
>> 2013/1/31 J. Bruce Fields :
>> > On Thu, Jan 17, 2013 at 08:52:59PM +0400, Pavel Shilovsky wrote:
>> >> If O_DENYMAND flag is specified, O_DENYREAD/WRITE/MAND flags a
2013/2/5 J. Bruce Fields :
> On Tue, Feb 05, 2013 at 03:33:21PM +0400, Pavel Shilovsky wrote:
>> 2013/1/31 J. Bruce Fields :
>> > On Thu, Jan 17, 2013 at 08:52:09PM +0400, Pavel Shilovsky wrote:
>> >> This patchset adds support of O_DENY* flags for Linux fs layer. The
2013/1/31 J. Bruce Fields :
> On Thu, Jan 17, 2013 at 08:53:00PM +0400, Pavel Shilovsky wrote:
>> Make CIFSSMBOpen take share_flags as a parm that allows us
>> to pass new O_DENY* flags to the server.
>>
>> Signed-off-by: Pavel Shilovsky
>> ---
>> fs/cifs/
2013/1/31 J. Bruce Fields :
> On Thu, Jan 17, 2013 at 08:52:59PM +0400, Pavel Shilovsky wrote:
>> If O_DENYMAND flag is specified, O_DENYREAD/WRITE/MAND flags are
>> translated to flock's flags:
>>
>> !O_DENYREAD -> LOCK_READ
>> !O_DENYWRITE -> LOCK_
2013/1/31 J. Bruce Fields :
> On Thu, Jan 17, 2013 at 08:52:09PM +0400, Pavel Shilovsky wrote:
>> This patchset adds support of O_DENY* flags for Linux fs layer. These flags
>> can be used by any application that needs share reservations to organize a
>> file access. VFS alr
2013/1/18 Stephen Rothwell :
> Hi Pavel,
>
> On Thu, 17 Jan 2013 20:52:09 +0400 Pavel Shilovsky
> wrote:
>>
>> This patchset adds support of O_DENY* flags for Linux fs layer. These flags
>> can be used by any application that needs share reservations to organize
to make it match CIFS and VFS variants.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/smb2maperror.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/smb2maperror.c b/fs/cifs/smb2maperror.c
index 494c912..11e589e 100644
--- a/fs/cifs/smb2maperror.c
+++ b/fs/cifs
by passing these flags to NFSv4 open request.
Signed-off-by: Pavel Shilovsky
---
fs/nfs/nfs4xdr.c | 24
1 file changed, 20 insertions(+), 4 deletions(-)
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 40836ee..0a0cd1e 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs
that maps them into O_DENY flags and make them visible for
applications that use O_DENYMAND opens.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 1 +
fs/nfsd/nfs4state.c | 46 +-
2 files changed, 46 insertions(+), 1 deletion(-)
diff --git
Windows locking mechanism in one
mount option by using NT_CREATE_ANDX to open files if forcemand is on.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/dir.c | 1 +
fs/cifs/file.c | 6 --
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 12ee773
Make CIFSSMBOpen take share_flags as a parm that allows us
to pass new O_DENY* flags to the server.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/cifsacl.c | 10 ++
fs/cifs/cifsglob.h | 12 +++-
fs/cifs/cifsproto.h | 9 +
fs/cifs/cifssmb.c | 47
l other
native Linux opens don't care about these flags. It allow us to
enable this feature for applications that need it (e.g. NFS and
Samba servers that export the same directory for Windows clients,
or Wine applications that access the same files simultaneously).
Signed-off-by: Pavel Shilovs
ch flags -
this change can benefit cifs and nfs modules as well as Samba and
NFS file servers. These flags are only take affect for opens with
O_DENYMAND flags - there is no impact on native Linux opens.
Signed-off-by: Pavel Shilovsky
---
fs/fcntl.c | 5 +++--
include/u
This parm demetermines how to check if locks have conflicts.
This let us use flock_lock_file funtions further to add
O_DENY* flags support through flocks.
Signed-off-by: Pavel Shilovsky
---
fs/locks.c | 14 ++
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/fs/locks.c
a.git;a=commitdiff;h=f116c478bf9a1bc3985e9a719fb20d854914d67a
Pavel Shilovsky (8):
locks: make flock_lock_file take is_conflict callback parm
fcntl: Introduce new O_DENY* open flags
vfs: Add O_DENYREAD/WRITE flags support for open syscall
CIFS: Add O_DENY* open flags support
CIFS: Use NT_CRE
2012/12/12 David Laight :
> On Sat, Dec 08, 2012 at 12:43:14AM +0400, Pavel Shilovsky wrote:
>>
>> The problem is the possibility of denial-of-service attacks here. We
>> can try to prevent them by:
>
> FWIW I already see a DoS 'attack'.
> I have some
Christoph Hellwig писал 07.12.2012 20:16:
On Thu, Dec 06, 2012 at 10:26:28PM +0400, Pavel Shilovsky wrote:
Network filesystems CIFS, SMB2.0, SMB3.0 and NFSv4 have such flags -
this change can benefit cifs and nfs modules. While this change is ok
for network filesystems, itsn't not targete
2012/12/6 Pavel Shilovsky :
> Network filesystems CIFS, SMB2.0, SMB3.0 and NFSv4 have such flags - this
> change can benefit cifs and nfs modules. While this change is ok for network
> filesystems, itsn't not targeted for local filesystems due security problems
> (e.g. when a
les. While this change is ok
for network filesystems, itsn't not targeted for local filesystems due
to security problems (e.g. when a user process can deny root to delete
a file).
Signed-off-by: Pavel Shilovsky
---
fs/fcntl.c |5 +++--
include/uapi/asm-ge
Windows locking mechanism in one
mount option by using NT_CREATE_ANDX to open files if forcemand is on.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/dir.c |1 +
fs/cifs/file.c |6 --
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index
Make CIFSSMBOpen take share_flags as a parm that allows us
to pass new O_DENY* flags to the server.
Signed-off-by: Pavel Shilovsky
---
fs/cifs/cifsacl.c | 10 ++
fs/cifs/cifsglob.h | 11 ++-
fs/cifs/cifsproto.h |9 +
fs/cifs/cifssmb.c | 47
Share flags are used by Windows applications and WINE have to deal with them
too. While WINE can process open share flags itself on local filesystems, it
can't do it if a file stored on a network share and is used by several clients.
This patchset makes it possible for CIFS/SMB2.0/SMB3
2012/11/30 Pavel Shilovsky :
> Network filesystems CIFS, SMB2.0, SMB3.0 and NFSv4 have such flags - this
> change can benefit cifs and nfs modules. While this change is ok for network
> filesystems, itsn't not targeted for local filesystems due security problems
> (e.g. when a
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