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Commit 8e6c848e authored by Al Viro's avatar Al Viro
Browse files

new primitive: vfs_mkobj() 



Similar to vfs_create(), but with caller-supplied callback (and
argument for it) to be used instead of ->create().

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent ae64f9bd

fs/namei.c

+21 −0
Original line number Diff line number Diff line
@@ -2898,6 +2898,27 @@ int vfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, 
}

EXPORT_SYMBOL(vfs_create);



int vfs_mkobj(struct dentry *dentry, umode_t mode,

		int (*f)(struct dentry *, umode_t, void *),

		void *arg)

{

	struct inode *dir = dentry->d_parent->d_inode;

	int error = may_create(dir, dentry);

	if (error)

		return error;



	mode &= S_IALLUGO;

	mode |= S_IFREG;

	error = security_inode_create(dir, dentry, mode);

	if (error)

		return error;

	error = f(dentry, mode, arg);

	if (!error)

		fsnotify_create(dir, dentry);

	return error;

}

EXPORT_SYMBOL(vfs_mkobj);



bool may_open_dev(const struct path *path)

{

	return !(path->mnt->mnt_flags & MNT_NODEV) &&

include/linux/fs.h

+4 −0
Original line number Diff line number Diff line
@@ -1608,6 +1608,10 @@ extern int vfs_whiteout(struct inode *, struct dentry *); 
extern struct dentry *vfs_tmpfile(struct dentry *dentry, umode_t mode,

				  int open_flag);



int vfs_mkobj(struct dentry *, umode_t,

		int (*f)(struct dentry *, umode_t, void *),

		void *);



/*

 * VFS file helper functions.

 */