X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Ftty.c;h=c356483d1974ee9358010cc585049eddcc1de569;hb=bf69479845b0dc57e75423be4dd2491cadda1f89;hp=c11d039364420c97093f00bc370649f550610f7e;hpb=3c9d53d98102887698af1c1b3655274207e7c941;p=ppp.git

diff --git a/pppd/tty.c b/pppd/tty.c
index c11d039..c356483 100644
--- a/pppd/tty.c
+++ b/pppd/tty.c
@@ -68,7 +68,7 @@
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define RCSID	"$Id: tty.c,v 1.23 2004/12/31 11:49:22 paulus Exp $"
+#define RCSID	"$Id: tty.c,v 1.25 2006/06/04 07:04:57 paulus Exp $"
 
 #include <stdio.h>
 #include <ctype.h>
@@ -563,12 +563,16 @@ int connect_tty()
 			int err, prio;
 
 			prio = privopen? OPRIO_ROOT: tty_options[0].priority;
-			if (prio < OPRIO_ROOT)
-				seteuid(uid);
+			if (prio < OPRIO_ROOT && seteuid(uid) == -1) {
+				error("Unable to drop privileges before opening %s: %m\n",
+				      devnam);
+				status = EXIT_OPEN_FAILED;
+				goto errret;
+			}
 			real_ttyfd = open(devnam, O_NONBLOCK | O_RDWR, 0);
 			err = errno;
-			if (prio < OPRIO_ROOT)
-				seteuid(0);
+			if (prio < OPRIO_ROOT && seteuid(0) == -1)
+				fatal("Unable to regain privileges");
 			if (real_ttyfd >= 0)
 				break;
 			errno = err;
@@ -773,6 +777,7 @@ void disconnect_tty()
 	} else {
 		info("Serial link disconnected.");
 	}
+	stop_charshunt(NULL, 0);
 }
 
 void tty_close_fds()
@@ -936,7 +941,6 @@ start_charshunt(ifd, ofd)
 	exit(0);
     }
     charshunt_pid = cpid;
-    add_notifier(&sigreceived, stop_charshunt, 0);
     record_child(cpid, "pppd (charshunt)", charshunt_done, NULL);
     return 1;
 }