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Hi,

well, I found the problem... It's a patch applied by OpenSUSE to the
kernel related to apparmor (the SUSE version of SELinux)... Here's the
patch regarding the "vfs_symlink" function:


########### START ##############
Add a struct vfsmount parameter to vfs_symlink()

Signed-off-by: Tony Jones <[EMAIL PROTECTED]>
Signed-off-by: Andreas Gruenbacher <[EMAIL PROTECTED]>

Index: b/fs/ecryptfs/inode.c
===================================================================
- --- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -470,6 +470,7 @@ static int ecryptfs_symlink(struct inode
 {
        int rc;
        struct dentry *lower_dentry;
+       struct vfsmount *lower_mnt;
        struct dentry *lower_dir_dentry;
        umode_t mode;
        char *encoded_symname;
@@ -478,6 +479,7 @@ static int ecryptfs_symlink(struct inode

        lower_dentry = ecryptfs_dentry_to_lower(dentry);
        dget(lower_dentry);
+       lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry);
        lower_dir_dentry = lock_parent(lower_dentry);
        mode = S_IALLUGO;
        encoded_symlen = ecryptfs_encode_filename(crypt_stat, symname,
@@ -487,7 +489,7 @@ static int ecryptfs_symlink(struct inode
                rc = encoded_symlen;
                goto out_lock;
        }
- -       rc = vfs_symlink(lower_dir_dentry->d_inode, lower_dentry,
+       rc = vfs_symlink(lower_dir_dentry->d_inode, lower_dentry, lower_mnt,
                         encoded_symname, mode);
        kfree(encoded_symname);
        if (rc || !lower_dentry->d_inode)
Index: b/fs/namei.c
===================================================================
- --- a/fs/namei.c
+++ b/fs/namei.c
@@ -2185,7 +2185,8 @@ asmlinkage long sys_unlink(const char __
        return do_unlinkat(AT_FDCWD, pathname);
 }

- -int vfs_symlink(struct inode *dir, struct dentry *dentry, const char
*oldname, int mode)
+int vfs_symlink(struct inode *dir, struct dentry *dentry, struct
vfsmount *mnt,
+               const char *oldname, int mode)
 {
        int error = may_create(dir, dentry, NULL);

@@ -2231,7 +2232,8 @@ asmlinkage long sys_symlinkat(const char
        if (IS_ERR(dentry))
                goto out_unlock;


- -       error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO);
+       error = vfs_symlink(nd.dentry->d_inode, dentry, nd.mnt, from,
+                           S_IALLUGO);
        dput(dentry);
 out_unlock:
        mutex_unlock(&nd.dentry->d_inode->i_mutex);
Index: b/fs/nfsd/vfs.c
===================================================================
- --- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1435,6 +1435,7 @@ nfsd_symlink(struct svc_rqst *rqstp, str
                                struct iattr *iap)
 {
        struct dentry   *dentry, *dnew;
+       struct vfsmount *mnt;
        __be32          err, cerr;
        int             host_err;
        umode_t         mode;
@@ -1461,6 +1462,7 @@ nfsd_symlink(struct svc_rqst *rqstp, str
        if (iap && (iap->ia_valid & ATTR_MODE))
                mode = iap->ia_mode & S_IALLUGO;

+       mnt = fhp->fh_export->ex_mnt;
        if (unlikely(path[plen] != 0)) {
                char *path_alloced = kmalloc(plen+1, GFP_KERNEL);
                if (path_alloced == NULL)
@@ -1468,11 +1470,12 @@ nfsd_symlink(struct svc_rqst *rqstp, str
                else {
                        strncpy(path_alloced, path, plen);
                        path_alloced[plen] = 0;
- -                       host_err = vfs_symlink(dentry->d_inode, dnew,
path_alloced, mode);
+                       host_err = vfs_symlink(dentry->d_inode, dnew, mnt,
+                                              path_alloced, mode);
                        kfree(path_alloced);
                }
        } else
- -               host_err = vfs_symlink(dentry->d_inode, dnew, path, mode);
+               host_err = vfs_symlink(dentry->d_inode, dnew, mnt, path,
mode);

        if (!host_err) {
                if (EX_ISSYNC(fhp->fh_export))
Index: b/include/linux/fs.h
===================================================================
- --- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -982,7 +982,7 @@ extern int vfs_permission(struct nameida
 extern int vfs_create(struct inode *, struct dentry *, int, struct
nameidata *);
 extern int vfs_mkdir(struct inode *, struct dentry *, struct vfsmount
*, int);
 extern int vfs_mknod(struct inode *, struct dentry *, struct vfsmount
*, int, dev_t);
- -extern int vfs_symlink(struct inode *, struct dentry *, const char *,
int);
+extern int vfs_symlink(struct inode *, struct dentry *, struct vfsmount
*, const char *, int);
 extern int vfs_link(struct dentry *, struct inode *, struct dentry *);

########### END ################


Can you help me make a patch so that aufs compiles in this kernel? That
way a patch for aufs to compile in OpenSUSE 10.3 will be already done.

Thanks in advance


Flávio Moringa
Technical Consultant
______________________________________________

Caixa Mágica Software
Energia Open Source
______________________________________________

Caixa Mágica Software
Edifício Espanha - Rua Soeiro Pereira Gomes
Lote 1 - 8ºFA, 1600-196 LISBOA
Portugal
Tel. +351 217 921 260
Fax. +351 217 921 261

http://www.caixamagica.pt


Sandino Flores Moreno wrote:
> I have applied the most recent patch of aufs (20070402) to
> 2.6.21-rc5-git11and the kernel compiled fine.
> 
> So, the error you are seeing is not due to aufs.
> 
> 2007/4/4, Flávio Moringa <[EMAIL PROTECTED]>:
>>
> Hi,
> 
> 
> I'm using the cvs version I downloaded today, so it's version 1.14.
> 
> I'll take a look at the macros you said.
> 
> Concerning the vfsmounts.. I'm sorry I really have no clue... It could
> be a patch made by opensuse... but I really don't know...
> 
> 
> 
> Flávio Moringa
> Technical Consultant
> ______________________________________________
> 
> Caixa Mágica Software
> Energia Open Source
> ______________________________________________
> 
> Caixa Mágica Software
> Edifício Espanha - Rua Soeiro Pereira Gomes
> Lote 1 - 8ºFA, 1600-196 LISBOA
> Portugal
> Tel. +351 217 921 260
> Fax. +351 217 921 261
> 
> http://www.caixamagica.pt
> 
> 
> [EMAIL PROTECTED] wrote:
>> Hello Flavio,
> 
>> Flvio_Moringa:
>>> i'm trying to compile aufs in kernel 2.6.21-rc5-git6-2 (in openSUSE
> 10.3
>>> alpha 2).
> 
>>> It seems the file vfssub.h needs to be patched because all the VFS
>>> helper functions from the kernel code have an extra argument (of type
>>> struct vfmount)... here's the errors:
> 
>> Which version are you using?
>> I could not find new arguments in
>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git.
> 
> 
>>> Any help on how can I create the patch?
> 
>> How about macros as Wilhelm Meier did for vserver, which was posted a
>> week ago?
> 
>> But two vfsmount pointers are strange, especially for vfs_link and
>> vfs_rename. Because those two vfsmounts must be identical. Do you how
>> and why they are used for?
> 
> 
>> Junjiro Okajima
>>
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