hpux man page for sysfs

sysfs(2)							System Calls Manual							  sysfs(2)

NAME
       sysfs - get file system type information

SYNOPSIS
DESCRIPTION
       is used to return information about the file system types configured in the system.  The number arguments accepted by varies and depends on
       the opcode.

       The current recognized opcodes and their functions are:

	      Translate      fsname, a null-terminated file-system type identifier, into a file-system type index.

	      Translate      fs_index, a file-system type index, into a null-terminated file-system type identifier and write it into  the  buffer
			     pointed  to  by buf; this buffer must be at least of size as defined in If there is no file-system type configured at
			     fs_index, a null string is returned for the file-system type identifier.

	      Return	     one more than the largest file system type configured.  This is not the  number  of  file	system	types  configured,
			     because the type numbers may not be contiguous.  See the example below.

RETURN VALUE
       Upon  successful completion, returns the file-system type index if the opcode is a value of 0 if the opcode is or the number of file system
       types configured if the opcode is Otherwise, a value of -1 is returned and is set to indicate the error.

ERRORS
       fails if one or more of the following are true and sets to the value indicated:

	      fsname	  points to an invalid file-system identifier; fs_index is negative or greater than the largest  file-system  type  index;
			  opcode is invalid.

	      buf	  or fsname points to an invalid user address.

EXAMPLES
       List the filesystem types configured in the system.

																	  sysfs(2)