/* -*-c-*-
*
- * $Id: bres.c,v 1.5 2001/02/03 16:21:08 mdw Exp $
+ * $Id: bres.c,v 1.7 2004/04/08 01:36:11 mdw Exp $
*
* Background reverse name resolution
*
* (c) 1999 Straylight/Edgeware
*/
-/*----- Licensing notice --------------------------------------------------*
+/*----- Licensing notice --------------------------------------------------*
*
* This file is part of the mLib utilities library.
*
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
- *
+ *
* mLib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
- *
+ *
* You should have received a copy of the GNU Library General Public
* License along with mLib; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: bres.c,v $
- * Revision 1.5 2001/02/03 16:21:08 mdw
- * Bug fixes: restore signals to their default dispositions, and set up the
- * addresses properly when unpacking @hostent@ structures.
- *
- * Revision 1.4 2000/08/15 17:35:02 mdw
- * (gethost, and others): Since @gethost@ actually uses @malloc@ rather
- * than @xmalloc@, it's wrong to use @xfree@ on the result. Fixed the code
- * to use the right freeing function on the right data.
- *
- * Revision 1.3 2000/06/17 10:38:35 mdw
- * Track changes to selbuf interface.
- *
- * Revision 1.2 1999/10/30 11:28:39 mdw
- * Fix include error, pointed out by Chris Rutter.
- *
- * Revision 1.1 1999/10/04 21:40:42 mdw
- * Added background resolver from `fw'.
- *
- */
-
/*----- Header files ------------------------------------------------------*/
+#include "config.h"
+
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include "alloc.h"
#include "bres.h"
+#include "mdup.h"
#include "report.h"
#include "sel.h"
struct hostent *h;
char *name;
char **alias = 0;
-
+
/* --- Read the skeleton structure --- */
if (doread(fd, &hsk, sizeof(hsk)))
if (hsk.nalias) {
int i;
if ((alias = malloc(hsk.nalias * sizeof(char *))) == 0)
- goto tidy_1;
+ goto tidy_1;
for (i = 0; i < hsk.nalias; i++)
alias[i] = 0;
for (i = 0; i < hsk.nalias; i++) {
}
*p++ = 0;
free(alias);
-
+
#undef PUT
}
{
int i;
+#if defined(_SC_OPEN_MAX)
int maxfd = sysconf(_SC_OPEN_MAX);
+#elif defined(OPEN_MAX)
+ int maxfd = OPEN_MAX;
+#else
+ int maxfd = -1;
+#endif
if (maxfd < 0)
maxfd = 256; /* Fingers crossed... */
{
int rfd[2], cfd[2];
pid_t kid;
+ mdup_fd md[2];
/* --- Make the pipes --- */
close(rfd[0]);
if (server) {
- dup2(cfd[0], STDIN_FILENO);
- dup2(rfd[1], STDOUT_FILENO);
- close(cfd[0]);
- close(rfd[1]);
- execlp(server, server, (char *)0);
- child(STDOUT_FILENO, STDIN_FILENO);
+ md[0].cur = cfd[0]; md[0].want = STDIN_FILENO;
+ md[1].cur = rfd[1]; md[1].want = STDOUT_FILENO;
+ if (mdup(md, 2) || execlp(server, server, (char *)0))
+ child(STDOUT_FILENO, STDIN_FILENO);
} else
child(rfd[1], cfd[0]);
_exit(1);