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[PATCH] get rid of path_lookup_create()

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... and don't pass bogus flags when we are just looking for parent.
Fold __path_lookup_intent_open() into path_lookup_open() while we
are at it; that's the only remaining caller.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2008-08-02 22:36:57 -04:00
parent 98bc993f99
commit 8737f3a1b3
1 changed files with 27 additions and 44 deletions
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71
fs/namei.c
View file

@ -1147,29 +1147,6 @@ int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt,
}
static int __path_lookup_intent_open(int dfd, const char *name,
unsigned int lookup_flags, struct nameidata *nd,
int open_flags, int create_mode)
{
struct file *filp = get_empty_filp();
int err;
if (filp == NULL)
return -ENFILE;
nd->intent.open.file = filp;
nd->intent.open.flags = open_flags;
nd->intent.open.create_mode = create_mode;
err = do_path_lookup(dfd, name, lookup_flags|LOOKUP_OPEN, nd);
if (IS_ERR(nd->intent.open.file)) {
if (err == 0) {
err = PTR_ERR(nd->intent.open.file);
path_put(&nd->path);
}
} else if (err != 0)
release_open_intent(nd);
return err;
}
/**
* path_lookup_open - lookup a file path with open intent
* @dfd: the directory to use as base, or AT_FDCWD
@ -1181,25 +1158,23 @@ static int __path_lookup_intent_open(int dfd, const char *name,
int path_lookup_open(int dfd, const char *name, unsigned int lookup_flags,
struct nameidata *nd, int open_flags)
{
return __path_lookup_intent_open(dfd, name, lookup_flags, nd,
open_flags, 0);
}
struct file *filp = get_empty_filp();
int err;
/**
* path_lookup_create - lookup a file path with open + create intent
* @dfd: the directory to use as base, or AT_FDCWD
* @name: pointer to file name
* @lookup_flags: lookup intent flags
* @nd: pointer to nameidata
* @open_flags: open intent flags
* @create_mode: create intent flags
*/
static int path_lookup_create(int dfd, const char *name,
unsigned int lookup_flags, struct nameidata *nd,
int open_flags, int create_mode)
{
return __path_lookup_intent_open(dfd, name, lookup_flags|LOOKUP_CREATE,
nd, open_flags, create_mode);
if (filp == NULL)
return -ENFILE;
nd->intent.open.file = filp;
nd->intent.open.flags = open_flags;
nd->intent.open.create_mode = 0;
err = do_path_lookup(dfd, name, lookup_flags|LOOKUP_OPEN, nd);
if (IS_ERR(nd->intent.open.file)) {
if (err == 0) {
err = PTR_ERR(nd->intent.open.file);
path_put(&nd->path);
}
} else if (err != 0)
release_open_intent(nd);
return err;
}
static struct dentry *__lookup_hash(struct qstr *name,
@ -1711,8 +1686,7 @@ struct file *do_filp_open(int dfd, const char *pathname,
/*
* Create - we need to know the parent.
*/
error = path_lookup_create(dfd, pathname, LOOKUP_PARENT,
&nd, flag, mode);
error = do_path_lookup(dfd, pathname, LOOKUP_PARENT, &nd);
if (error)
return ERR_PTR(error);
@ -1723,10 +1697,18 @@ struct file *do_filp_open(int dfd, const char *pathname,
*/
error = -EISDIR;
if (nd.last_type != LAST_NORM || nd.last.name[nd.last.len])
goto exit;
goto exit_parent;
error = -ENFILE;
filp = get_empty_filp();
if (filp == NULL)
goto exit_parent;
nd.intent.open.file = filp;
nd.intent.open.flags = flag;
nd.intent.open.create_mode = mode;
dir = nd.path.dentry;
nd.flags &= ~LOOKUP_PARENT;
nd.flags |= LOOKUP_CREATE | LOOKUP_OPEN;
mutex_lock(&dir->d_inode->i_mutex);
path.dentry = lookup_hash(&nd);
path.mnt = nd.path.mnt;
@ -1831,6 +1813,7 @@ exit_dput:
exit:
if (!IS_ERR(nd.intent.open.file))
release_open_intent(&nd);
exit_parent:
path_put(&nd.path);
return ERR_PTR(error);