| 1 | /* $Cambridge: exim/src/OS/os.c-IRIX65,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */ |
| 2 | |
| 3 | /************************************************* |
| 4 | * Exim - an Internet mail transport agent * |
| 5 | *************************************************/ |
| 6 | |
| 7 | /* Copyright (c) University of Cambridge 2001 */ |
| 8 | /* See the file NOTICE for conditions of use and distribution. */ |
| 9 | |
| 10 | /* Irix-specific code. This is concatenated onto the generic src/os.c file. |
| 11 | Irix has a unique way of finding all the network interfaces, so we provide a |
| 12 | unique function here, and define FIND_RUNNING_INTERFACES to stop src/os.c |
| 13 | trying to provide the function. The macro may be set initially anyway, when |
| 14 | compiling os. for utilities that don't want this function. */ |
| 15 | |
| 16 | #ifndef FIND_RUNNING_INTERFACES |
| 17 | #define FIND_RUNNING_INTERFACES |
| 18 | |
| 19 | /* This is the special form of the function using sysctl() which is the only |
| 20 | form that returns all the aliases on IRIX systems. This code has its origins |
| 21 | in a sample program that came from within SGI. */ |
| 22 | |
| 23 | #include <sys/sysctl.h> |
| 24 | #include <net/if_dl.h> |
| 25 | #include <net/if_types.h> |
| 26 | #include <net/soioctl.h> |
| 27 | #include <net/route.h> |
| 28 | |
| 29 | #define ROUNDUP(a) ((a) > 0 ? (1 + (((a) - 1) | (sizeof(__uint64_t) -1))) \ |
| 30 | : sizeof(__uint64_t)) |
| 31 | #ifdef _HAVE_SA_LEN |
| 32 | #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) |
| 33 | #else |
| 34 | #define ADVANCE(x, n) (x += ROUNDUP(_FAKE_SA_LEN_DST(n))) |
| 35 | #endif |
| 36 | |
| 37 | |
| 38 | ip_address_item * |
| 39 | os_find_running_interfaces(void) |
| 40 | { |
| 41 | ip_address_item *yield = NULL; |
| 42 | ip_address_item *last = NULL; |
| 43 | ip_address_item *next; |
| 44 | |
| 45 | size_t needed; |
| 46 | int mib[6]; |
| 47 | char *buf, *nextaddr, *lim; |
| 48 | register struct if_msghdr *ifm; |
| 49 | |
| 50 | mib[0] = CTL_NET; |
| 51 | mib[1] = PF_ROUTE; |
| 52 | mib[2] = 0; |
| 53 | mib[3] = 0; |
| 54 | mib[4] = NET_RT_IFLIST; |
| 55 | mib[5] = 0; |
| 56 | |
| 57 | /* Get an estimate of the amount of store needed, then get the store and |
| 58 | get the data into it. Any error causes a panic death. */ |
| 59 | |
| 60 | if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) |
| 61 | log_write(0, LOG_PANIC_DIE, "iflist-sysctl-estimate failed: %s", |
| 62 | strerror(errno)); |
| 63 | |
| 64 | buf = store_get(needed); |
| 65 | |
| 66 | if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) |
| 67 | log_write(0, LOG_PANIC_DIE, "sysctl of ifnet list failed: %s", |
| 68 | strerror(errno)); |
| 69 | |
| 70 | /* Now fish out the data for each interface */ |
| 71 | |
| 72 | lim = buf + needed; |
| 73 | for (nextaddr = buf; nextaddr < lim; nextaddr += ifm->ifm_msglen) |
| 74 | { |
| 75 | ifm = (struct if_msghdr *)nextaddr; |
| 76 | |
| 77 | if (ifm->ifm_type != RTM_IFINFO) |
| 78 | { |
| 79 | struct ifa_msghdr *ifam = (struct ifa_msghdr *)ifm; |
| 80 | struct sockaddr_in *mask = NULL, *addr = NULL; |
| 81 | |
| 82 | if ((ifam->ifam_addrs & RTA_NETMASK) != 0) |
| 83 | mask = (struct sockaddr_in *)(ifam + 1); |
| 84 | |
| 85 | if ((ifam->ifam_addrs & RTA_IFA) != 0) |
| 86 | { |
| 87 | char *cp = (char *)mask; |
| 88 | struct sockaddr *sa = (struct sockaddr *)mask; |
| 89 | ADVANCE(cp, sa); |
| 90 | addr = (struct sockaddr_in *)cp; |
| 91 | } |
| 92 | |
| 93 | /* Create a data block for the address, fill in the data, and put it on |
| 94 | the chain. This data has to survive for ever, so use malloc. */ |
| 95 | |
| 96 | if (addr != NULL) |
| 97 | { |
| 98 | next = store_malloc(sizeof(ip_address_item)); |
| 99 | next->next = NULL; |
| 100 | next->port = 0; |
| 101 | (void)host_ntoa(-1, addr, next->address, NULL); |
| 102 | |
| 103 | if (yield == NULL) yield = last = next; else |
| 104 | { |
| 105 | last->next = next; |
| 106 | last = next; |
| 107 | } |
| 108 | |
| 109 | DEBUG(D_interface) debug_printf("Actual local interface address is %s\n", |
| 110 | last->address); |
| 111 | } |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | return yield; |
| 116 | } |
| 117 | |
| 118 | #endif /* FIND_RUNNING_INTERFACES */ |
| 119 | |
| 120 | /* End of os.c-IRIX */ |