cc [ flag... ] file... -ldevinfo [ library... ] #include <libdevinfo.h>
char *di_devfs_path(di_node_t node);
char *di_devfs_minor_path(di_minor_t minor);
void di_devfs_path_free(char *path_buf);
node The handle to a device node in the snapshot.
minor The handle to a device minor node in the snapshot.
path_buf A pointer returned by di_devfs_path() or di_devfs_minor_path().
The di_devfs_path() function generates the physical path of the device node specified by node.
The di_devfs_minor_path() function generates the physical path of the device minor node specified by minor.
The di_devfs_path_free() function frees memory that was allocated to store the physical path by di_devfs_path() and di_devfs_minor_path(). The caller of di_devfs_path() and di_devfs_minor_path() is responsible for freeing this memory allocated by calling di_devfs_path_free().
Upon successful completion, the di_devfs_path() and di_devfs_minor_path() functions return a pointer to the string containing the physical path of a device node or a device minor node, respectively. Otherwise, they return NULL and errno is set to indicate the error.
The di_devfs_path() and di_devfs_minor_path() functions will fail if:
EINVAL The node or minor argument is not a valid handle.
The di_devfs_path() and di_devfs_minor_path() functions can also return any error value returned by malloc(3C).
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Evolving |
| MT-Level | Safe |
di_init(3DEVINFO), libdevinfo(3LIB), malloc(3C), attributes(5)
Writing Device Drivers