ref: 585365f5bbffae93eac3f1a4ba476aa0cab3f95d
dir: /sys/src/ape/lib/bsd/getsockname.c/
/* posix */ #include <sys/types.h> #include <unistd.h> #include <stdlib.h> #include <stdio.h> #include <fcntl.h> #include <string.h> #include <errno.h> /* bsd extensions */ #include <sys/uio.h> #include <sys/socket.h> #include <netinet/in.h> #include <sys/un.h> #include "priv.h" int getsockname(int fd, struct sockaddr *addr, int *alen) { Rock *r; int len, olen; struct sockaddr_un *lunix; r = _sock_findrock(fd, 0); if(r == 0){ errno = ENOTSOCK; return -1; } len = 0; switch(r->domain){ case PF_INET: case PF_INET6: _sock_ingetaddr(r, &r->addr, &len, "local"); break; case PF_UNIX: lunix = (struct sockaddr_un*)&r->addr; len = &lunix->sun_path[strlen(lunix->sun_path)] - (char*)lunix; break; default: errno = EAFNOSUPPORT; return -1; } if(alen != 0){ olen = *alen; *alen = len; if(olen < len) len = olen; } if(addr != 0 && len > 0) memmove(addr, &r->addr, len); return 0; }