#include <sys/un.h>
sys/un.h
structsockaddr_un
[XSI] Definitions for UNIX IPC domain.
| unsigned char | sun_len | sockaddr len including null |
| sa_family_t | sun_family | [XSI] AF_UNIX |
| char[104] | sun_path | [XSI] path name (gag) |
macroSUN_LEN
actual length of an initialized sockaddr_un
#define SUN_LEN(su) (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))