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FIDO_BIO_INFO_NEW(3) | Library Functions Manual | FIDO_BIO_INFO_NEW(3) |
NAME¶
fido_bio_info_new
,
fido_bio_info_free
,
fido_bio_info_type
,
fido_bio_info_max_samples
—
SYNOPSIS¶
#include <fido.h>
#include <fido/bio.h>
fido_bio_info_t *
fido_bio_info_new
(void);
void
fido_bio_info_free
(fido_bio_info_t
**info_p);
uint8_t
fido_bio_info_type
(const
fido_bio_info_t *info);
uint8_t
fido_bio_info_max_samples
(const
fido_bio_info_t *info);
DESCRIPTION¶
Biometric sensor metadata is abstracted in libfido2 by the fido_bio_info_t type.The functions described in this page allow a fido_bio_info_t type to be allocated, deallocated, and inspected. For device operations on fido_bio_info_t, please refer to fido_bio_dev_get_info(3).
The fido_bio_info_new
() function returns a
pointer to a newly allocated, empty fido_bio_info_t
type. If memory cannot be allocated, NULL is returned.
The fido_bio_info_free
() function releases
the memory backing *info_p, where
*info_p must have been previously allocated by
fido_bio_info_new
(). On return,
*info_p is set to NULL. Either
info_p or *info_p may be NULL,
in which case fido_bio_info_free
() is a NOP.
The fido_bio_info_type
() function returns
the fingerprint sensor type, which is 1
for touch
sensors, and 2
for swipe sensors.
The fido_bio_info_max_samples
() function
returns the maximum number of successful samples required for
enrollment.
SEE ALSO¶
fido_bio_dev_get_info(3), fido_bio_enroll_new(3), fido_bio_template(3)September 13, 2019 | Linux 4.19.0-12-amd64 |