diff options
Diffstat (limited to 'contrib/bind/lib/irs/gethostent.c')
| -rw-r--r-- | contrib/bind/lib/irs/gethostent.c | 59 |
1 files changed, 43 insertions, 16 deletions
diff --git a/contrib/bind/lib/irs/gethostent.c b/contrib/bind/lib/irs/gethostent.c index 8e7e717..3964b5f 100644 --- a/contrib/bind/lib/irs/gethostent.c +++ b/contrib/bind/lib/irs/gethostent.c @@ -16,7 +16,7 @@ */ #if !defined(LINT) && !defined(CODECENTER) -static const char rcsid[] = "$Id: gethostent.c,v 1.32 2002/05/27 06:50:55 marka Exp $"; +static const char rcsid[] = "$Id: gethostent.c,v 1.32.10.2 2003/06/04 01:09:43 marka Exp $"; #endif /* Imports */ @@ -482,7 +482,7 @@ freehostent(struct hostent *he) { #define LIFREQ lifreq #endif -static int +static void scan_interfaces6(int *have_v4, int *have_v6) { struct LIFCONF lifc; struct LIFREQ lifreq; @@ -492,12 +492,9 @@ scan_interfaces6(int *have_v4, int *have_v6) { static unsigned int bufsiz = 4095; int s, cpsize, n; - /* Set to zero. Used as loop terminators below. */ - *have_v4 = *have_v6 = 0; - /* Get interface list from system. */ if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) == -1) - goto err_ret; + goto cleanup; /* * Grow buffer until large enough to contain all interface @@ -506,7 +503,7 @@ scan_interfaces6(int *have_v4, int *have_v6) { for (;;) { buf = memget(bufsiz); if (buf == NULL) - goto err_ret; + goto cleanup; #ifdef SETFAMILYFLAGS lifc.lifc_family = AF_UNSPEC; /* request all families */ lifc.lifc_flags = 0; @@ -526,10 +523,10 @@ scan_interfaces6(int *have_v4, int *have_v6) { break; } if ((n == -1) && errno != EINVAL) - goto err_ret; + goto cleanup; if (bufsiz > 1000000) - goto err_ret; + goto cleanup; memput(buf, bufsiz); bufsiz += 4096; @@ -600,16 +597,42 @@ scan_interfaces6(int *have_v4, int *have_v6) { memput(buf, bufsiz); close(s); /* printf("scan interface -> 4=%d 6=%d\n", *have_v4, *have_v6); */ - return (0); - err_ret: + return; + cleanup: if (buf != NULL) memput(buf, bufsiz); if (s != -1) close(s); /* printf("scan interface -> 4=%d 6=%d\n", *have_v4, *have_v6); */ - return (-1); + return; } +#endif +#ifdef __linux +#ifndef IF_NAMESIZE +# ifdef IFNAMSIZ +# define IF_NAMESIZE IFNAMSIZ +# else +# define IF_NAMESIZE 16 +# endif +#endif +static void +scan_linux6(int *have_v6) { + FILE *proc = NULL; + char address[33]; + char name[IF_NAMESIZE+1]; + int ifindex, prefix, flag3, flag4; + + proc = fopen("/proc/net/if_inet6", "r"); + if (proc == NULL) + return; + + if (fscanf(proc, "%32[a-f0-9] %x %x %x %x %16s\n", + address, &ifindex, &prefix, &flag3, &flag4, name) == 6) + *have_v6 = 1; + fclose(proc); + return; +} #endif static int @@ -626,17 +649,21 @@ scan_interfaces(int *have_v4, int *have_v6) { int s, n; size_t cpsize; + /* Set to zero. Used as loop terminators below. */ + *have_v4 = *have_v6 = 0; + #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR) && \ !defined(IRIX_EMUL_IOCTL_SIOCGIFCONF) /* * Try to scan the interfaces using IPv6 ioctls(). */ - if (!scan_interfaces6(have_v4, have_v6)) + scan_interfaces6(have_v4, have_v6); + if (*have_v4 != 0 && *have_v6 != 0) return (0); #endif - - /* Set to zero. Used as loop terminators below. */ - *have_v4 = *have_v6 = 0; +#ifdef __linux + scan_linux6(have_v6); +#endif /* Get interface list from system. */ if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) |
