uipc_syscalls_40.c revision 1.4.2.2
1 1.4.2.2 ad /* $NetBSD: uipc_syscalls_40.c,v 1.4.2.2 2007/06/09 21:37:08 ad Exp $ */ 2 1.4.2.2 ad 3 1.4.2.2 ad /* written by Pavel Cahyna, 2006. Public domain. */ 4 1.4.2.2 ad 5 1.4.2.2 ad #include <sys/cdefs.h> 6 1.4.2.2 ad __KERNEL_RCSID(0, "$NetBSD: uipc_syscalls_40.c,v 1.4.2.2 2007/06/09 21:37:08 ad Exp $"); 7 1.4.2.2 ad 8 1.4.2.2 ad /* 9 1.4.2.2 ad * System call interface to the socket abstraction. 10 1.4.2.2 ad */ 11 1.4.2.2 ad 12 1.4.2.2 ad #include <sys/param.h> 13 1.4.2.2 ad #include <sys/kernel.h> 14 1.4.2.2 ad #include <sys/msg.h> 15 1.4.2.2 ad #include <sys/sysctl.h> 16 1.4.2.2 ad #include <sys/mount.h> 17 1.4.2.2 ad #include <sys/syscallargs.h> 18 1.4.2.2 ad #include <sys/errno.h> 19 1.4.2.2 ad 20 1.4.2.2 ad #include <net/if.h> 21 1.4.2.2 ad 22 1.4.2.2 ad #include <compat/sys/socket.h> 23 1.4.2.2 ad #include <compat/sys/sockio.h> 24 1.4.2.2 ad 25 1.4.2.2 ad #ifdef COMPAT_OIFREQ 26 1.4.2.2 ad /* 27 1.4.2.2 ad * Return interface configuration 28 1.4.2.2 ad * of system. List may be used 29 1.4.2.2 ad * in later ioctl's (above) to get 30 1.4.2.2 ad * other information. 31 1.4.2.2 ad */ 32 1.4.2.2 ad /*ARGSUSED*/ 33 1.4.2.2 ad int 34 1.4.2.2 ad compat_ifconf(u_long cmd, void *data) 35 1.4.2.2 ad { 36 1.4.2.2 ad struct oifconf *ifc = data; 37 1.4.2.2 ad struct ifnet *ifp; 38 1.4.2.2 ad struct ifaddr *ifa; 39 1.4.2.2 ad struct oifreq ifr, *ifrp; 40 1.4.2.2 ad int space, error = 0; 41 1.4.2.2 ad const int sz = (int)sizeof(ifr); 42 1.4.2.2 ad 43 1.4.2.2 ad if ((ifrp = ifc->ifc_req) == NULL) 44 1.4.2.2 ad space = 0; 45 1.4.2.2 ad else 46 1.4.2.2 ad space = ifc->ifc_len; 47 1.4.2.2 ad IFNET_FOREACH(ifp) { 48 1.4.2.2 ad (void)strncpy(ifr.ifr_name, ifp->if_xname, 49 1.4.2.2 ad sizeof(ifr.ifr_name)); 50 1.4.2.2 ad if (ifr.ifr_name[sizeof(ifr.ifr_name) - 1] != '\0') 51 1.4.2.2 ad return ENAMETOOLONG; 52 1.4.2.2 ad if (TAILQ_EMPTY(&ifp->if_addrlist)) { 53 1.4.2.2 ad memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); 54 1.4.2.2 ad if (space >= sz) { 55 1.4.2.2 ad error = copyout(&ifr, ifrp, sz); 56 1.4.2.2 ad if (error != 0) 57 1.4.2.2 ad return (error); 58 1.4.2.2 ad ifrp++; 59 1.4.2.2 ad } 60 1.4.2.2 ad space -= sizeof(ifr); 61 1.4.2.2 ad continue; 62 1.4.2.2 ad } 63 1.4.2.2 ad 64 1.4.2.2 ad TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) { 65 1.4.2.2 ad struct sockaddr *sa = ifa->ifa_addr; 66 1.4.2.2 ad #ifdef COMPAT_OSOCK 67 1.4.2.2 ad if (cmd == OOSIOCGIFCONF) { 68 1.4.2.2 ad struct osockaddr *osa = 69 1.4.2.2 ad (struct osockaddr *)&ifr.ifr_addr; 70 1.4.2.2 ad /* 71 1.4.2.2 ad * If it does not fit, we don't bother with it 72 1.4.2.2 ad */ 73 1.4.2.2 ad if (sa->sa_len > sizeof(*osa)) 74 1.4.2.2 ad continue; 75 1.4.2.2 ad memcpy(&ifr.ifr_addr, sa, sa->sa_len); 76 1.4.2.2 ad osa->sa_family = sa->sa_family; 77 1.4.2.2 ad if (space >= sz) { 78 1.4.2.2 ad error = copyout(&ifr, ifrp, sz); 79 1.4.2.2 ad ifrp++; 80 1.4.2.2 ad } 81 1.4.2.2 ad } else 82 1.4.2.2 ad #endif 83 1.4.2.2 ad if (sa->sa_len <= sizeof(*sa)) { 84 1.4.2.2 ad memcpy(&ifr.ifr_addr, sa, sa->sa_len); 85 1.4.2.2 ad if (space >= sz) { 86 1.4.2.2 ad error = copyout(&ifr, ifrp, sz); 87 1.4.2.2 ad ifrp++; 88 1.4.2.2 ad } 89 1.4.2.2 ad } else { 90 1.4.2.2 ad space -= sa->sa_len - sizeof(*sa); 91 1.4.2.2 ad if (space >= sz) { 92 1.4.2.2 ad error = copyout(&ifr, ifrp, 93 1.4.2.2 ad sizeof(ifr.ifr_name)); 94 1.4.2.2 ad if (error == 0) { 95 1.4.2.2 ad error = copyout(sa, 96 1.4.2.2 ad &ifrp->ifr_addr, 97 1.4.2.2 ad sa->sa_len); 98 1.4.2.2 ad } 99 1.4.2.2 ad ifrp = (struct oifreq *) 100 1.4.2.2 ad (sa->sa_len + 101 1.4.2.2 ad (char *)&ifrp->ifr_addr); 102 1.4.2.2 ad } 103 1.4.2.2 ad } 104 1.4.2.2 ad if (error != 0) 105 1.4.2.2 ad return (error); 106 1.4.2.2 ad space -= sz; 107 1.4.2.2 ad } 108 1.4.2.2 ad } 109 1.4.2.2 ad if (ifrp != NULL) 110 1.4.2.2 ad ifc->ifc_len -= space; 111 1.4.2.2 ad else 112 1.4.2.2 ad ifc->ifc_len = -space; 113 1.4.2.2 ad return (0); 114 1.4.2.2 ad } 115 1.4.2.2 ad #endif 116
Indexes created Wed Oct 22 13:09:56 GMT 2025