linux-toradex.git/fs/compat.c, branch v2.6.18 Linux kernel for Apalis and Colibri modules [PATCH] x86_64: Add compat_printk and sysctl to turn off compat layer warnings 2006-06-26T17:48:16+00:00 Andi Kleen ak@suse.de 2006-06-26T11:56:52+00:00 bebfa1013eee1d91b3242e5801cc8fbdfaf148ec Sometimes e.g. with crashme the compat layer warnings can be noisy. Add a way to turn them off by gating all output through compat_printk that checks a global sysctl. The default is not changed. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Sometimes e.g. with crashme the compat layer warnings can be noisy.
Add a way to turn them off by gating all output through compat_printk
that checks a global sysctl. The default is not changed.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry 2006-06-23T14:42:45+00:00 David Howells dhowells@redhat.com 2006-06-23T09:02:58+00:00 726c334223180e3c0197cc980a432681370d4baf Give the statfs superblock operation a dentry pointer rather than a superblock pointer. This complements the get_sb() patch. That reduced the significance of sb->s_root, allowing NFS to place a fake root there. However, NFS does require a dentry to use as a target for the statfs operation. This permits the root in the vfsmount to be used instead. linux/mount.h has been added where necessary to make allyesconfig build successfully. Interest has also been expressed for use with the FUSE and XFS filesystems. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Nathan Scott <nathans@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Give the statfs superblock operation a dentry pointer rather than a superblock
pointer.

This complements the get_sb() patch.  That reduced the significance of
sb->s_root, allowing NFS to place a fake root there.  However, NFS does
require a dentry to use as a target for the statfs operation.  This permits
the root in the vfsmount to be used instead.

linux/mount.h has been added where necessary to make allyesconfig build
successfully.

Interest has also been expressed for use with the FUSE and XFS filesystems.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Nathan Scott <nathans@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] NFS: fix error handling on access_ok in compat_sys_nfsservctl 2006-05-21T19:59:16+00:00 Lin Feng Shen shenlinf@cn.ibm.com 2006-05-20T21:59:49+00:00 d64b1c878fc1e384ae53d1d40034239bc33848f4 Functions compat_nfs_svc_trans, compat_nfs_clnt_trans, compat_nfs_exp_trans, compat_nfs_getfd_trans and compat_nfs_getfs_trans, which are called by compat_sys_nfsservctl(fs/compat.c), don't handle the return value of access_ok properly. access_ok return 1 when the addr is valid, and 0 when it's not, but these functions have the reversed understanding. When the address is valid, they always return -EFAULT to compat_sys_nfsservctl. An example is to run /usr/sbin/rpc.nfsd(32bit program on Power5). It doesn't function as expected. strace showes that nfsservctl returns -EFAULT. The patch fixes this by correcting the error handling on the return value of access_ok in the five functions. Signed-off-by: Lin Feng Shen <shenlinf@cn.ibm.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Functions compat_nfs_svc_trans, compat_nfs_clnt_trans,
compat_nfs_exp_trans, compat_nfs_getfd_trans and compat_nfs_getfs_trans,
which are called by compat_sys_nfsservctl(fs/compat.c), don't handle the
return value of access_ok properly.  access_ok return 1 when the addr is
valid, and 0 when it's not, but these functions have the reversed
understanding.  When the address is valid, they always return -EFAULT to
compat_sys_nfsservctl.

An example is to run /usr/sbin/rpc.nfsd(32bit program on Power5).  It
doesn't function as expected.  strace showes that nfsservctl returns
-EFAULT.

The patch fixes this by correcting the error handling on the return value
of access_ok in the five functions.

Signed-off-by: Lin Feng Shen <shenlinf@cn.ibm.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] fs/compat.c: fix 'if (a |= b )' typo 2006-05-15T18:20:57+00:00 Alexey Dobriyan adobriyan@gmail.com 2006-05-15T16:44:27+00:00 3835a9bd07778d87dea37fbf190f70883515e8fc Mentioned by Mark Armbrust somewhere on Usenet. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Ulrich Drepper <drepper@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Mentioned by Mark Armbrust somewhere on Usenet.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] compat_sys_vmsplice: one-off in UIO_MAXIOV check 2006-05-04T07:13:49+00:00 Jens Axboe axboe@suse.de 2006-05-04T07:13:49+00:00 98232d504db0a1f91ecaa93686ed3bf61963103b nr_segs may not be > UIO_MAXIOV, however it may be equal to. This makes the behaviour identical to the real sys_vmsplice(). The other foov syscalls also agree that this is the way to go. Signed-off-by: Jens Axboe <axboe@suse.de> 
nr_segs may not be > UIO_MAXIOV, however it may be equal to. This makes
the behaviour identical to the real sys_vmsplice(). The other foov
syscalls also agree that this is the way to go.

Signed-off-by: Jens Axboe <axboe@suse.de>
[PATCH] x86_64: Add compat_sys_vmsplice and use it in x86-64 2006-05-02T01:17:43+00:00 Andi Kleen ak@suse.de 2006-05-01T19:15:48+00:00 d2610202290b4924b71747314a0f88f28807702e Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] LSM: add missing hook to do_compat_readv_writev() 2006-04-26T14:52:21+00:00 James Morris jmorris@namei.org 2006-04-26T06:45:03+00:00 e7edf9cdeddc0cff125e8e658216efb2ff2b2219 This patch addresses a flaw in LSM, where there is no mediation of readv() and writev() in for 32-bit compatible apps using a 64-bit kernel. This bug was discovered and fixed initially in the native readv/writev code [1], but was not fixed in the compat code. Thanks to Al for spotting this one. [1] http://lwn.net/Articles/154282/ Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
This patch addresses a flaw in LSM, where there is no mediation of readv()
and writev() in for 32-bit compatible apps using a 64-bit kernel.

This bug was discovered and fixed initially in the native readv/writev
code [1], but was not fixed in the compat code.  Thanks to Al for spotting
this one.

  [1] http://lwn.net/Articles/154282/

Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] Fold select_bits_alloc/free into caller code. 2006-03-28T17:16:04+00:00 Vadim Lobanov vlobanov@speakeasy.net 2006-03-28T09:56:35+00:00 68c3431ae22912be580c68d3955ef46515582943 Remove an unnecessary level of indirection in allocating and freeing select bits, as per the select_bits_alloc() and select_bits_free() functions. Both select.c and compat.c are updated. Signed-off-by: Vadim Lobanov <vlobanov@speakeasy.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Remove an unnecessary level of indirection in allocating and freeing select
bits, as per the select_bits_alloc() and select_bits_free() functions.
Both select.c and compat.c are updated.

Signed-off-by: Vadim Lobanov <vlobanov@speakeasy.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] use kzalloc and kcalloc in core fs code 2006-03-25T16:23:00+00:00 Oliver Neukum neukum@fachschaft.cup.uni-muenchen.de 2006-03-25T11:08:13+00:00 11b0b5abb2097a63c1081d9b7e825b987b227972 Signed-off-by: Oliver Neukum <oliver@neukum.name> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Signed-off-by: Oliver Neukum <oliver@neukum.name>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] compat_sys_nfsservctl(): handle errors correctly 2006-03-25T16:22:59+00:00 Peter Staubach staubach@redhat.com 2006-03-25T11:08:04+00:00 57070d012cd425c3a71663528c56a436abd2d9da Correct some error handling on the compat version of the nfsservctl() system. It was detecting errors while copying in the arguments from user space, but then attempting to use the arguments anyway. This didn't seem so good. Signed-off-by: Peter Staubach <staubach@redhat.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Correct some error handling on the compat version of the nfsservctl()
system.  It was detecting errors while copying in the arguments from user
space, but then attempting to use the arguments anyway.  This didn't seem
so good.

Signed-off-by: Peter Staubach <staubach@redhat.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>