VFS_RENAME(9) The Linux VFS VFS_RENAME(9)NAME
vfs_rename - rename a filesystem object
int vfs_rename(struct inode * old_dir, struct dentry * old_dentry, struct inode * new_dir, struct dentry * new_dentry,
struct inode ** delegated_inode);
parent of source
parent of destination
returns an inode needing a delegation break
The caller must hold multiple mutexes--see lock_rename).
If vfs_rename discovers a delegation in need of breaking at either the source or destination, it will return -EWOULDBLOCK and return a
reference to the inode in delegated_inode. The caller should then break the delegation and retry. Because breaking a delegation may take a
long time, the caller should drop all locks before doing so.
Alternatively, a caller may pass NULL for delegated_inode. This may be appropriate for callers that expect the underlying filesystem not to
be NFS exported.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 VFS_RENAME(9)
Check Out this Related Man Page
DEBUGFS_CREATE_BLOB(9) The debugfs filesystem DEBUGFS_CREATE_BLOB(9)NAME
debugfs_create_blob - create a debugfs file that is used to read a binary blob
struct dentry * debugfs_create_blob(const char * name, umode_t mode, struct dentry * parent, struct debugfs_blob_wrapper * blob);
a pointer to a string containing the name of the file to create.
the permission that the file should have
a pointer to the parent dentry for this file. This should be a directory dentry if set. If this parameter is NULL, then the file will
be created in the root of the debugfs filesystem.
a pointer to a struct debugfs_blob_wrapper which contains a pointer to the blob data and the size of the data.
This function creates a file in debugfs with the given name that exports blob->data as a binary blob. If the mode variable is so set it can
be read from. Writing is not supported.
This function will return a pointer to a dentry if it succeeds. This pointer must be passed to the debugfs_remove function when the file is
to be removed (no automatic cleanup happens if your module is unloaded, you are responsible here.) If an error occurs, NULL will be
If debugfs is not enabled in the kernel, the value -ENODEV will be returned. It is not wise to check for this value, but rather, check for
NULL or !NULL instead as to eliminate the need for #ifdef in the calling code.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 DEBUGFS_CREATE_BLOB(9)
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