- (djm) Bug #110: bogus error messages in lastlog_get_entry(). Fix based

   on one by peak@argo.troja.mff.cuni.cz

1 files changed, 22 insertions, 12 deletions

diff --git a/loginrec.c b/loginrec.c
index a0d14dbdf..0a5fefad3 100644
--- a/loginrec.c
+++ b/loginrec.c
@@ -163,7 +163,7 @@
 #include "log.h"
 #include "atomicio.h"
 
-RCSID("$Id: loginrec.c,v 1.45 2003/01/03 03:42:28 djm Exp $");
+RCSID("$Id: loginrec.c,v 1.46 2003/01/07 05:46:58 djm Exp $");
 
 #ifdef HAVE_UTIL_H
 #  include <util.h>
@@ -1522,22 +1522,32 @@ int
 lastlog_get_entry(struct logininfo *li)
 {
         struct lastlog last;
-        int fd;
+        int fd, ret;
 
         if (!lastlog_openseek(li, &fd, O_RDONLY))
-                return 0;
-
-        if (atomicio(read, fd, &last, sizeof(last)) != sizeof(last)) {
-                close(fd);
-                log("lastlog_get_entry: Error reading from %s: %s",
-                    LASTLOG_FILE, strerror(errno));
-                return 0;
-        }
+                return (0);
 
+        ret = atomicio(read, fd, &last, sizeof(last));
         close(fd);
 
-        lastlog_populate_entry(li, &last);
+        switch (ret) {
+        case 0:
+                memset(&last, '\0', sizeof(last));
+                /* FALLTHRU */
+        case sizeof(last):
+                lastlog_populate_entry(li, &last);
+                return (1);
+        case -1:
+                error("%s: Error reading from %s: %s", __func__, 
+                    LASTLOG_FILE, strerror(errno));
+                return (0);
+        default:
+                error("%s: Error reading from %s: Expecting %d, got %d",
+                    __func__, LASTLOG_FILE, sizeof(last), ret);
+                return (0);
+        }
 
-        return 1;
+        /* NOTREACHED */
+        return (0);
 }
 #endif /* USE_LASTLOG */