static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr, abi_ulong target_addr, socklen_t len) { const socklen_t unix_maxlen = sizeof (struct sockaddr_un); sa_family_t sa_family; struct target_sockaddr *target_saddr; if (fd_trans_target_to_host_addr(fd)) { return fd_trans_target_to_host_addr(fd)(addr, target_addr, len); } target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); if (!target_saddr) return -TARGET_EFAULT; sa_family = tswap16(target_saddr->sa_family); /* Oops. The caller might send a incomplete sun_path; sun_path * must be terminated by \0 (see the manual page), but * unfortunately it is quite common to specify sockaddr_un * length as "strlen(x->sun_path)" while it should be * "strlen(...) + 1". We'll fix that here if needed. * Linux kernel has a similar feature. */ if (sa_family == AF_UNIX) { if (len < unix_maxlen && len > 0) { char *cp = (char*)target_saddr; if ( cp[len-1] && !cp[len] ) len++; } if (len > unix_maxlen) len = unix_maxlen; } memcpy(addr, target_saddr, len); addr->sa_family = sa_family; if (sa_family == AF_PACKET) { struct target_sockaddr_ll *lladdr; lladdr = (struct target_sockaddr_ll *)addr; lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); lladdr->sll_hatype = tswap16(lladdr->sll_hatype); } unlock_user(target_saddr, target_addr, 0); return 0; }