Daemon: make core files work if setuid is in use

diff --git a/configure.ac b/configure.ac
index 6e50432..c31a5e9 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -21,7 +21,7 @@ dnl
 YAZ_DOC
 dnl 
 dnl
-AC_CHECK_HEADERS([dirent.h fnmatch.h wchar.h locale.h langinfo.h pwd.h unistd.h sys/select.h sys/socket.h sys/stat.h sys/time.h sys/times.h sys/types.h sys/un.h sys/wait.h netdb.h arpa/inet.h netinet/tcp.h netinet/in_systm.h],[],[],[])
+AC_CHECK_HEADERS([dirent.h fnmatch.h wchar.h locale.h langinfo.h pwd.h unistd.h sys/select.h sys/socket.h sys/stat.h sys/time.h sys/times.h sys/types.h sys/un.h sys/wait.h sys/prctl.h netdb.h arpa/inet.h netinet/tcp.h netinet/in_systm.h],[],[],[])
 AC_CHECK_HEADERS([net/if.h netinet/in.h netinet/if_ether.h],[],[],[
  #if HAVE_SYS_TYPES_H
  #include <sys/types.h>

diff --git a/src/daemon.c b/src/daemon.c
index a4d0fd4..69c2330 100644 (file)
--- a/src/daemon.c
+++ b/src/daemon.c
@@ -33,6 +33,10 @@
 #include <pwd.h>
 #endif
 
+#if HAVE_SYS_PRCTL_H
+#include <sys/prctl.h>
+#endif
+
 #include <yaz/daemon.h>
 #include <yaz/log.h>
 #include <yaz/snprintf.h>
@@ -199,6 +203,13 @@ int yaz_daemon(const char *progname,
             yaz_log(YLOG_FATAL|YLOG_ERRNO, "setuid");
             exit(1);
         }
+        /* Linux don't produce core dumps evern if the limit is right and
+           files are writable.. This fixes this. See prctl(2) */
+#if HAVE_SYS_PRCTL_H
+#ifdef PR_SET_DUMPABLE
+        prctl(PR_SET_DUMPABLE, 1, 0, 0);
+#endif
+#endif
     }
 
     if (flags & YAZ_DAEMON_FORK)