Operations summary

The following PFS operations are grouped by category and by applicability to file or socket PFSs.

Table 1. PFS operations by PFS type and category
Type	Category	Operation
File PFS - File System Services	VFS_MOUNT	Mount a file system
	VFS_UMOUNT	Unmount a file system
	VFS_SYNC	Synchronize a file system (synchronize all files)
	VFS_STATFS	Get general file system attributes
	VFS_VGET	Get a vnode from a file ID (FID)
File PFS - Directory Services	VN_LOOKUP	Look up a filename in a directory
	VN_READDIR	Read a directory
	VN_CREATE	Create a regular, FIFO, or character special file
	VN_MKDIR	Create a directory
	VN_SYMLINK	Create a symbolic or external link
	VN_LINK	Create a hard link to a file
	VN_RMDIR	Remove a directory
	VN_REMOVE	Remove a file
	VN_RENAME	Rename a file or directory
File PFS - File Services	VN_OPEN	Open a file
	VN_CLOSE	Close a file
	VN_READLINK	Read a symbolic link file or external link file
	VN_ACCESS	Perform access check
	VN_TRUNC	Truncate a file
	VN_FSYNC	Synchronize a file (save data to disk)
Any PFS - File Services	VN_RDWR	Read or write
	VN_READWRITEV	Read or write with multiple buffers
	VN_GETATTR	Get attributes for a file
	VN_SETATTR	Set attributes of a file
	VN_IOCTL	Control I/O
	VN_AUDIT	Perform security auditing
	VN_SELECT	Select on a vnode
	VN_INACTIVE	Inactivate a vnode-inode
	VN_PATHCONF	Return configurable limits
	VN_RECOVERY	Recover from an abend for an operation in progress
	VFS_RECOVERY	Recover from an EOM condition for an operation in progress
	VFS_PFSCTL	PFS Control
	VFS_BATSEL	Select on a set of files/sockets
Sockets PFS - Address Family, or Domain, Services	VFS_NETWORK	Activate a domain
	VFS_SOCKET	Create socket or socketpair in a domain
	VFS_GETHOST	Get host ID or name
Sockets PFS - Socket Services	VN_ACCEPT	Accept a connection request
	VN_BIND	Bind a socket
	VN_CONNECT	Establish a connection
	VN_GETNAME	Get the name of the peer or socket
	VN_SOCKOPT	Get or set socket options
	VN_LISTEN	Get ready to accept connection requests
	VN_SNDRCV	Send or receive
	VN_SNDTORCVFM	Send to or receive from
	VN_SRMSG	Send a message or receive a message
	VN_SETPEER	Set a peer
	VN_SHUTDOWN	Shut down a socket

The VFS-vnode vector tables returned by the PFS after its initialization contain either the direct or indirect addresses (depending on the value of the pfsi_modind flag in the PFSI) of the routines that implement the operations in the preceding list.