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[PATCH] assorted path_lookup() -> kern_path() conversions

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more nameidata eviction

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2008-08-02 01:04:36 -04:00
parent a63bb99660
commit 421748ecde
4 changed files with 34 additions and 37 deletions
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14
fs/block_dev.c
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@ -1268,33 +1268,33 @@ EXPORT_SYMBOL(ioctl_by_bdev);
* namespace if possible and return it. Return ERR_PTR(error)
* otherwise.
*/
struct block_device *lookup_bdev(const char *path)
struct block_device *lookup_bdev(const char *pathname)
{
struct block_device *bdev;
struct inode *inode;
struct nameidata nd;
struct path path;
int error;
if (!path || !*path)
if (!pathname || !*pathname)
return ERR_PTR(-EINVAL);
error = path_lookup(path, LOOKUP_FOLLOW, &nd);
error = kern_path(pathname, LOOKUP_FOLLOW, &path);
if (error)
return ERR_PTR(error);
inode = nd.path.dentry->d_inode;
inode = path.dentry->d_inode;
error = -ENOTBLK;
if (!S_ISBLK(inode->i_mode))
goto fail;
error = -EACCES;
if (nd.path.mnt->mnt_flags & MNT_NODEV)
if (path.mnt->mnt_flags & MNT_NODEV)
goto fail;
error = -ENOMEM;
bdev = bd_acquire(inode);
if (!bdev)
goto fail;
out:
path_put(&nd.path);
path_put(&path);
return bdev;
fail:
bdev = ERR_PTR(error);