From 34f308960818e514fadd9365cb5b14cca319320b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 7 Jun 2007 18:28:02 -0400 Subject: [PATCH] SUNRPC: Enable non-exclusive create in rpc_mkpipe() Signed-off-by: Trond Myklebust --- net/sunrpc/rpc_pipe.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 2320f1e42da4..ebcb8053836e 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -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; -- 2.20.1