linux.git/fs/compat.c, branch v2.6.38

compat breakage in preadv() and pwritev()

2011-03-13T23:29:07+00:00

Fix for a dumb preadv()/pwritev() compat bug - unlike the native
variants, the compat_...  ones forget to check FMODE_P{READ,WRITE}, so
e.g.  on pipe the native preadv() will fail with -ESPIPE and compat one
will act as readv() and succeed.

Not critical, but it's a clear bug with trivial fix, so IMO it's OK for
-final.

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

compat: copy missing fields in compat_statfs64 to user

2011-01-17T09:54:38+00:00

f_flags and f_spare fields were not copied to userspace when
compat_sys_[f]statfs64 called.

Signed-off-by: Namhyung Kim 
Cc: Christoph Hellwig 
Signed-off-by: Al Viro

compat: update comment of compat statfs syscalls

2011-01-17T09:54:38+00:00

The commit 7ed1ee6118ae ("Take statfs variants to fs/statfs.c")
separates out statfs syscalls from fs/open.c. Thus the comment
should be changed also.

Signed-off-by: Namhyung Kim 
Cc: Jiri Kosina 
Signed-off-by: Al Viro

compat: remove unnecessary assignment in compat_rw_copy_check_uvector()

2011-01-17T09:54:38+00:00

*@ret_pointer is initialized to @fast_pointer thus the assignment is
redundant.

Signed-off-by: Namhyung Kim 
Cc: Jeff Moyer 
Signed-off-by: Al Viro

exec: copy-and-paste the fixes into compat_do_execve() paths

2010-12-01T01:56:38+00:00

Note: this patch targets 2.6.37 and tries to be as simple as possible.
That is why it adds more copy-and-paste horror into fs/compat.c and
uglifies fs/exec.c, this will be cleanuped later.

compat_copy_strings() plays with bprm->vma/mm directly and thus has
two problems: it lacks the RLIMIT_STACK check and argv/envp memory
is not visible to oom killer.

Export acct_arg_size() and get_arg_page(), change compat_copy_strings()
to use get_arg_page(), change compat_do_execve() to do acct_arg_size(0)
as do_execve() does.

Add the fatal_signal_pending/cond_resched checks into compat_count() and
compat_copy_strings(), this matches the code in fs/exec.c and certainly
makes sense.

Signed-off-by: Oleg Nesterov 
Cc: KOSAKI Motohiro 
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds

fs/compat.c: fix build on MIPS/s390

2010-10-30T15:19:35+00:00

The definition of PAGE_CACHE_MASK in  is needed to use
MAX_RW_COUNT, and on x86-64 that gets done indirectly through the
architecture header includes.  But on MIPS and s390 that doesn't happen,
and we need to make sure that fs/compat.c includes pagemap.h explicitly.

Introduced in commit 435f49a518c7 ("readv/writev: do the same
MAX_RW_COUNT truncation that read/write does").

Reported-by: Sachin Sant  (S390)
Reported-by: wu zhangjin  (MIPS)
Signed-off-by: Linus Torvalds

readv/writev: do the same MAX_RW_COUNT truncation that read/write does

2010-10-29T17:36:49+00:00

We used to protect against overflow, but rather than return an error, do
what read/write does, namely to limit the total size to MAX_RW_COUNT.
This is not only more consistent, but it also means that any broken
low-level read/write routine that still keeps counts in 'int' can't
break.

Signed-off-by: Linus Torvalds

Merge 'staging-next' to Linus's tree

2010-10-28T16:44:56+00:00

This merges the staging-next tree to Linus's tree and resolves
some conflicts that were present due to changes in other trees that were
affected by files here.

Signed-off-by: Greg Kroah-Hartman

Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux

2010-10-26T16:55:25+00:00

* 'for-2.6.37' of git://linux-nfs.org/~bfields/linux: (99 commits)
  svcrpc: svc_tcp_sendto XPT_DEAD check is redundant
  svcrpc: no need for XPT_DEAD check in svc_xprt_enqueue
  svcrpc: assume svc_delete_xprt() called only once
  svcrpc: never clear XPT_BUSY on dead xprt
  nfsd4: fix connection allocation in sequence()
  nfsd4: only require krb5 principal for NFSv4.0 callbacks
  nfsd4: move minorversion to client
  nfsd4: delay session removal till free_client
  nfsd4: separate callback change and callback probe
  nfsd4: callback program number is per-session
  nfsd4: track backchannel connections
  nfsd4: confirm only on succesful create_session
  nfsd4: make backchannel sequence number per-session
  nfsd4: use client pointer to backchannel session
  nfsd4: move callback setup into session init code
  nfsd4: don't cache seq_misordered replies
  SUNRPC: Properly initialize sock_xprt.srcaddr in all cases
  SUNRPC: Use conventional switch statement when reclassifying sockets
  sunrpc/xprtrdma: clean up workqueue usage
  sunrpc: Turn list_for_each-s into the ..._entry-s
  ...

Fix up trivial conflicts (two different deprecation notices added in
separate branches) in Documentation/feature-removal-schedule.txt

smbfs: move to drivers/staging

2010-10-05T16:08:21+00:00

smbfs has been scheduled for removal in 2.6.27, so
maybe we can now move it to drivers/staging on the
way out.

smbfs still uses the big kernel lock and nobody
is going to fix that, so we should be getting
rid of it soon.

This removes the 32 bit compat mount and ioctl
handling code, which is implemented in common fs
code, and moves all smbfs related files into
drivers/staging/smbfs.

Signed-off-by: Arnd Bergmann 
Acked-by: Jeff Layton 
Signed-off-by: Greg Kroah-Hartman