diff options
Diffstat (limited to 'lib/bind/resolv/res_send.c')
| -rw-r--r-- | lib/bind/resolv/res_send.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/lib/bind/resolv/res_send.c b/lib/bind/resolv/res_send.c index 39dc998..5154fe2 100644 --- a/lib/bind/resolv/res_send.c +++ b/lib/bind/resolv/res_send.c @@ -70,7 +70,7 @@ #if defined(LIBC_SCCS) && !defined(lint) static const char sccsid[] = "@(#)res_send.c 8.1 (Berkeley) 6/4/93"; -static const char rcsid[] = "$Id: res_send.c,v 1.9.18.8 2006/10/16 23:00:58 marka Exp $"; +static const char rcsid[] = "$Id: res_send.c,v 1.9.18.10 2008/01/27 02:06:26 marka Exp $"; #endif /* LIBC_SCCS and not lint */ /*! \file @@ -293,7 +293,7 @@ int res_nsend(res_state statp, const u_char *buf, int buflen, u_char *ans, int anssiz) { - int gotsomewhere, terrno, try, v_circuit, resplen, ns, n; + int gotsomewhere, terrno, tries, v_circuit, resplen, ns, n; char abuf[NI_MAXHOST]; #ifdef USE_POLL @@ -405,7 +405,7 @@ res_nsend(res_state statp, /* * Send request, RETRY times, or until successful. */ - for (try = 0; try < statp->retry; try++) { + for (tries = 0; tries < statp->retry; tries++) { for (ns = 0; ns < statp->nscount; ns++) { struct sockaddr *nsap; int nsaplen; @@ -453,7 +453,7 @@ res_nsend(res_state statp, if (v_circuit) { /* Use VC; at most one attempt per server. */ - try = statp->retry; + tries = statp->retry; n = send_vc(statp, buf, buflen, ans, anssiz, &terrno, ns); if (n < 0) @@ -464,7 +464,7 @@ res_nsend(res_state statp, } else { /* Use datagrams. */ n = send_dg(statp, buf, buflen, ans, anssiz, &terrno, - ns, try, &v_circuit, &gotsomewhere); + ns, tries, &v_circuit, &gotsomewhere); if (n < 0) goto fail; if (n == 0) @@ -601,6 +601,9 @@ send_vc(res_state statp, u_short len; u_char *cp; void *tmp; +#ifdef SO_NOSIGPIPE + int on = 1; +#endif nsap = get_nsaddr(statp, ns); nsaplen = get_salen(nsap); @@ -646,6 +649,17 @@ send_vc(res_state statp, return (-1); } } +#ifdef SO_NOSIGPIPE + /* + * Disable generation of SIGPIPE when writing to a closed + * socket. Write should return -1 and set errno to EPIPE + * instead. + * + * Push on even if setsockopt(SO_NOSIGPIPE) fails. + */ + (void)setsockopt(statp->_vcsock, SOL_SOCKET, SO_NOSIGPIPE, &on, + sizeof(on)); +#endif errno = 0; if (connect(statp->_vcsock, nsap, nsaplen) < 0) { *terrno = errno; @@ -773,7 +787,7 @@ send_vc(res_state statp, static int send_dg(res_state statp, const u_char *buf, int buflen, u_char *ans, - int anssiz, int *terrno, int ns, int try, int *v_circuit, + int anssiz, int *terrno, int ns, int tries, int *v_circuit, int *gotsomewhere) { const HEADER *hp = (const HEADER *) buf; @@ -855,7 +869,7 @@ send_dg(res_state statp, const u_char *buf, int buflen, u_char *ans, /* * Wait for reply. */ - seconds = (statp->retrans << try); + seconds = (statp->retrans << tries); if (ns > 0) seconds /= statp->nscount; if (seconds <= 0) |
