The following entry points are specified by the virtual file system interface for performing operations on vfs structures:
| vfs_cntl | Issues control operations for a file system. |
| vfs_init | Initializes a virtual file system. |
| vfs_mount | Mounts a virtual file system. |
| vfs_root | Finds the root v-node of a virtual file system. |
| vfs_statfs | Obtains virtual file system statistics. |
| vfs_sync | Forces file system updates to permanent storage. |
| vfs_umount | Unmounts a virtual file system. |
| vfs_vget | Gets the v-node corresponding to a file identifier. |
The following entry points are specified by the Virtual File System interface for performing operations on v-node structures:
| vn_access | Tests a user's permission to access a file. |
| vn_close | Releases the resources associated with a v-node. |
| vn_create | Creates and opens a new file. |
| vn_fclear | Releases portions of a file (by zeroing bytes). |
| vn_fid | Builds a file identifier for a v-node. |
| vn_fsync | Flushes in-memory information and data to permanent storage. |
| vn_ftrunc | Decreases the size of a file. |
| vn_getacl | Gets information about access control, by retrieving the access control list. |
| vn_getattr | Gets the attributes of a file. |
| vn_hold | Assures that a v-node is not destroyed, by incrementing the v-node's use count. |
| vn_ioctl | Performs miscellaneous operations on devices. |
| vn_link | Creates a new directory entry for a file. |
| vn_lockctl | Sets, removes, and queries file locks. |
| vn_lookup | Finds an object by name in a directory. |
| vn_map | Associates a file with a memory segment. |
| vn_mkdir | Creates a directory. |
| vn_mknod | Creates a file of arbitrary type. |
| vn_open | Gets read and/or write access to a file. |
| vn_rdwr | Reads or writes a file. |
| vn_readdir | Reads directory entries in standard format. |
| vn_readlink | Reads the contents of a symbolic link. |
| vn_rele | Releases a reference to a virtual node (v-node). |
| vn_remove | Unlinks a file or directory. |
| vn_rename | Renames a file or directory. |
| vn_revoke | Revokes access to an object. |
| vn_rmdir | Removes a directory. |
| vn_select | Polls a v-node for pending I/O. |
| vn_setacl | Sets information about access control for a file. |
| vn_setattr | Sets attributes of a file. |
| vn_strategy | Reads or writes blocks of a file. |
| vn_symlink | Creates a symbolic link. |
| vn_unmap | Destroys a file or memory association. |
Virtual File System Kernel Extensions Overview.
Understanding Virtual Nodes (V-nodes).