xref: /illumos-gate/usr/src/man/man3fstyp/fstyp_init.3fstyp (revision ddb365bfc9e868ad24ccdcb0dc91af18b10df082)
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FSTYP_INIT 3FSTYP "Jun 20, 2006"
NAME
fstyp_init, fstyp_fini - initialize and finalize libfstyp handle
SYNOPSIS

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

int fstyp_init(int fd, off64_t **offset, char *module_dir,
 fstyp_handle_t *handle);

void fstyp_fini(void *handle);
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.

module_dir

Optional location of the libfstyp modules.

handle

Opaque handle to be used with libfstyp functions.

DESCRIPTION

The fstyp_init() function returns a handle associated with the specified parameters. This handle should be used with all other libfstyp functions.

If module_dir is NULL, fstyp_init() looks for modules in the default location: /usr/lib/fs subdirectories. The fstyp_init() function locates libfstyp modules, but might defer loading the modules until the subsequent fstyp_ident() call.

If module_dir is other than NULL, the fstyp_init() function locates a module in the directory that is specified. If no module is found, fstyp_init fails with FSTYP_ERR_MOD_NOT_FOUND.

Modules that do not support non-zero offset can fail fstyp_init() with FSTYP_ERR_OFFSET.

The fstyp_fini() function releases all resources associated with a handle and invalidates the handle.

RETURN VALUES

The fstyp_init() function returns 0 on success and an error value on failure. See fstyp_strerror(3FSTYP).

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Evolving
MT-Level MT-Safe
SEE ALSO

fstyp_ident (3FSTYP), fstyp_mod_init (3FSTYP), fstyp_strerror (3FSTYP), libfstyp (3LIB), attributes (7)