fstyp_mod_init(3FSTYP)				 File System Type Identification Library Functions			    fstyp_mod_init(3FSTYP)

NAME

       fstyp_mod_init, fstyp_mod_fini, fstyp_mod_ident, fstyp_mod_get_attr, fstyp_mod_dump - libfstyp module interface

SYNOPSIS

       cc [ flag... ] file... -lfstyp  -lnvpair  [ library... ]
       #include <libnvpair.h>
       #include <libfstyp.h>

       int fstyp_mod_init(int fd, off64_t **offset, fstyp_mod_handle_t *handle);

       void fstyp_mod_fini(fstyp_mod_handle_t handle);

       int fstyp_mod_ident(fstyp_mod_handle_t handle);

       int fstyp_mod_get_attr(fstyp_mod_handle_t handle, nvlist_t **attr);

       int fstyp_mod_dump(fstyp_mod_handle_t handle, FILE *fout, FILE *ferr);

PARAMETERS

       fd	 Open file descriptor of a block or a raw device that contains the file system to be identified.

       offset	 Offset from the beginning of the device where the file system is located.

       handle	 Opaque handle that the module returns in fstyp_mod_init() and is used with other module functions.

       fout	 Output stream.

       ferr	 Error stream.

DESCRIPTION

       A  libfstyp  module  implements	heuristics required to identify a file system type. The modules are shared objects loaded by libfstyp. The
       libfstyp modules are located in /usr/lib/fs subdirectories. A subdirectory name defines the name of the file system.

       Each module exports the fstyp_mod_init(), fstyp_mod_fini(), fstyp_mod_ident(), and fstyp_mod_get_attr() functions. All of  these  functions
       map directly to the respective libfstyp interfaces.

       The fstyp_mod_dump() function is optional. It can be used to output unformatted information about the file system. This function is used by
       the fstyp(1M) command when the -v option is specified. The fstyp_mod_dump() function is not recommended and should be used only	in  legacy
       modules.

FILES

       /usr/lib/fs/

	   Default module directory.

       /usr/lib/fs/fstype/fstyp.so.1

	   Default path to a libfstyp module for an fstype file system.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       fstyp(1M), fstyp_strerror(3FSTYP), libfstyp(3LIB), attributes(5)

SunOS 5.11							    29 Jun 2006 					    fstyp_mod_init(3FSTYP)