Oops, I forgot to CC my last email to the mailing list; re-sending now. On Tue, 27 Oct 2015 19:43:46 -0500 Shirish Pargaonkar <[email protected]> wrote: > On Tue, Oct 27, 2015 at 4:59 AM, Aurélien Aptel <[email protected]> > wrote: > > Hi Shirish, > > > > On Mon, 26 Oct 2015 22:04:28 -0500 Shirish Pargaonkar > > <[email protected]> wrote: > >> They are stored in a linked list of struct cifs_rdelem off of > >> superblock where each element of this linked list points to a > >> disconnected dentry. > > > > This list is only used use when we mount with noserverino. It > > doesn't work in both case anyway. > > No, that is not the case. I have tested this against a Windows 2012 > server and did not mount the shares with noserverino option. > Since we can query info off of disconnected entires, we fill the > inodes which get filled with correct inode info as dentires get > spliced.
The only function that adds elements to the rdlist is this one, and it
only does so with noserverino. I believe d_obtain_alias() doesn't store
the full path on the share associated with the disconnected entry it creates.
The full path is therefore lost and build_path_from_dentry() fails.
static struct dentry *
create_root_dis_dentry(struct super_block *sb, struct inode *rinode,
char *fpath)
{
int rc;
unsigned int xid;
struct dentry *dentry = NULL;
struct cifs_rdelem *rdelem = NULL;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
printk("create_root_dis_dentry %s, rinode %p\n", fpath, rinode);
xid = get_xid();
if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&rinode, fpath, sb, xid);
else
rc = cifs_get_inode_info(&rinode, fpath, NULL, sb, xid, NULL);
free_xid(xid);
if ((rc == 0) && (rinode != NULL)) {
dentry = d_obtain_alias(rinode);
if (IS_ERR(dentry)) {
iput(rinode);
goto rdelem_ret;
}
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
rdelem =
cifs_alloc_rdelem(fpath, dentry, rinode);
if (IS_ERR(rdelem))
goto rdelem_ret;
spin_lock(&cifs_sb->rtdislock);
list_add(&rdelem->rdlist, &cifs_sb->rtdislist);
spin_unlock(&cifs_sb->rtdislock);
}
return dentry;
}
rdelem_ret:
return ERR_PTR(-EACCES);
}
> Sorry, missed looking at the link before. yes, the same setup.
> I could never get right seutp for Samba server.
I must be missing something because I cannot make your patch work.
We're using the exact same setup.
--
Aurélien Aptel / SUSE Labs Samba Team
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