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SUNRPC: Enable non-exclusive create in rpc_mkpipe()

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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2007-06-07 18:28:02 -04:00
parent 6e84c7b66a
commit 34f3089608
1 changed files with 14 additions and 4 deletions
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18
net/sunrpc/rpc_pipe.c
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@ -621,7 +621,7 @@ __rpc_rmdir(struct inode *dir, struct dentry *dentry)
}
static struct dentry *
rpc_lookup_create(struct dentry *parent, const char *name, int len)
rpc_lookup_create(struct dentry *parent, const char *name, int len, int exclusive)
{
struct inode *dir = parent->d_inode;
struct dentry *dentry;
@ -630,7 +630,7 @@ rpc_lookup_create(struct dentry *parent, const char *name, int len)
dentry = lookup_one_len(name, parent, len);
if (IS_ERR(dentry))
goto out_err;
if (dentry->d_inode) {
if (dentry->d_inode && exclusive) {
dput(dentry);
dentry = ERR_PTR(-EEXIST);
goto out_err;
@ -649,7 +649,7 @@ rpc_lookup_negative(char *path, struct nameidata *nd)
if ((error = rpc_lookup_parent(path, nd)) != 0)
return ERR_PTR(error);
dentry = rpc_lookup_create(nd->dentry, nd->last.name, nd->last.len);
dentry = rpc_lookup_create(nd->dentry, nd->last.name, nd->last.len, 1);
if (IS_ERR(dentry))
rpc_release_path(nd);
return dentry;
@ -716,10 +716,20 @@ rpc_mkpipe(struct dentry *parent, const char *name, void *private, struct rpc_pi
struct inode *dir, *inode;
struct rpc_inode *rpci;
dentry = rpc_lookup_create(parent, name, strlen(name));
dentry = rpc_lookup_create(parent, name, strlen(name), 0);
if (IS_ERR(dentry))
return dentry;
dir = parent->d_inode;
if (dentry->d_inode) {
rpci = RPC_I(dentry->d_inode);
if (rpci->private != private ||
rpci->ops != ops ||
rpci->flags != flags) {
dput (dentry);
dentry = ERR_PTR(-EBUSY);
}
goto out;
}
inode = rpc_get_inode(dir->i_sb, S_IFIFO | S_IRUSR | S_IWUSR);
if (!inode)
goto err_dput;