lkml.org 
[lkml]   [2012]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 07/17] vfs: add new "reval" argument to kern_path_create
Date
...for now, all of the callers pass in "false". Eventually, we'll set
that to "true" when we retry the lookup after getting back an ESTALE on
a call.

While we're at it, change the is_dir arg to a bool since that's how it's
used currently.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
---
drivers/base/devtmpfs.c | 7 ++++---
fs/namei.c | 12 +++++++++---
include/linux/namei.h | 2 +-
net/unix/af_unix.c | 3 ++-
4 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 765c3a2..fdd1bff 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -148,7 +148,7 @@ static int dev_mkdir(const char *name, umode_t mode)
struct path path;
int err;

- dentry = kern_path_create(AT_FDCWD, name, &path, 1);
+ dentry = kern_path_create(AT_FDCWD, name, &path, true, false);
if (IS_ERR(dentry))
return PTR_ERR(dentry);

@@ -195,10 +195,11 @@ static int handle_create(const char *nodename, umode_t mode, struct device *dev)
struct path path;
int err;

- dentry = kern_path_create(AT_FDCWD, nodename, &path, 0);
+ dentry = kern_path_create(AT_FDCWD, nodename, &path, false, false);
if (dentry == ERR_PTR(-ENOENT)) {
create_path(nodename);
- dentry = kern_path_create(AT_FDCWD, nodename, &path, 0);
+ dentry = kern_path_create(AT_FDCWD, nodename, &path,
+ false, false);
}
if (IS_ERR(dentry))
return PTR_ERR(dentry);
diff --git a/fs/namei.c b/fs/namei.c
index a20faa5..86aa8ee 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2536,11 +2536,17 @@ struct file *do_file_open_root(struct dentry *dentry, struct vfsmount *mnt,
return file;
}

-struct dentry *kern_path_create(int dfd, const char *pathname, struct path *path, int is_dir)
+struct dentry *kern_path_create(int dfd, const char *pathname, struct path *path, bool is_dir, bool reval)
{
struct dentry *dentry = ERR_PTR(-EEXIST);
struct nameidata nd;
- int error = do_path_lookup(dfd, pathname, LOOKUP_PARENT, &nd);
+ int error;
+ unsigned int lookup_flags = LOOKUP_PARENT;
+
+ if (reval)
+ lookup_flags |= LOOKUP_REVAL;
+
+ error = do_path_lookup(dfd, pathname, lookup_flags, &nd);
if (error)
return ERR_PTR(error);

@@ -2594,7 +2600,7 @@ struct dentry *user_path_create(int dfd, const char __user *pathname, struct pat
struct dentry *res;
if (IS_ERR(tmp))
return ERR_CAST(tmp);
- res = kern_path_create(dfd, tmp, path, is_dir);
+ res = kern_path_create(dfd, tmp, path, (bool)is_dir, false);
putname(tmp);
return res;
}
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 1ea93d5..9e135e3 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -76,7 +76,7 @@ extern int user_path_at(int, const char __user *, unsigned, struct path *);

extern int kern_path(const char *, unsigned, struct path *);

-extern struct dentry *kern_path_create(int, const char *, struct path *, int);
+extern struct dentry *kern_path_create(int, const char *, struct path *, bool, bool);
extern struct dentry *user_path_create(int, const char __user *, struct path *, int);
extern int kern_path_parent(const char *, struct nameidata *);
extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 641f2e4..d94caa9 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -866,7 +866,8 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
* Get the parent directory, calculate the hash for last
* component.
*/
- dentry = kern_path_create(AT_FDCWD, sun_path, &path, 0);
+ dentry = kern_path_create(AT_FDCWD, sun_path, &path,
+ false, false);
err = PTR_ERR(dentry);
if (IS_ERR(dentry))
goto out_mknod_parent;
--
1.7.7.6


\
 
 \ /
  Last update: 2012-06-29 21:41    [W:0.094 / U:4.468 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site