strtoumax: fix typo in previous commit.

[gnulib.git] / tests / test-ptsname.c

diff --git a/tests/test-ptsname.c b/tests/test-ptsname.c
index 7d4e7d4..15d4925 100644 (file)
--- a/tests/test-ptsname.c
+++ b/tests/test-ptsname.c
@@ -1,5 +1,5 @@
 /* Test of ptsname(3).
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -21,16 +21,60 @@
 #include "signature.h"
 SIGNATURE_CHECK (ptsname, char *, (int));
 
+#include <errno.h>
 #include <fcntl.h>
+#include <signal.h>
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
+#include <sys/stat.h>
+
+#include "same-inode.h"
 
 #include "macros.h"
 
+/* Compare two slave names.
+   On some systems, there are hard links in the /dev/ directory.
+   For example, on OSF/1 5.1,
+     /dev/ttyp0 == /dev/pts/0
+     /dev/ttyp9 == /dev/pts/9
+     /dev/ttypa == /dev/pts/10
+     /dev/ttype == /dev/pts/14
+ */
+static int
+same_slave (const char *slave_name1, const char *slave_name2)
+{
+  struct stat statbuf1;
+  struct stat statbuf2;
+
+  return (strcmp (slave_name1, slave_name2) == 0
+          || (stat (slave_name1, &statbuf1) >= 0
+              && stat (slave_name2, &statbuf2) >= 0
+              && SAME_INODE (statbuf1, statbuf2)));
+}
+
 int
 main (void)
 {
+#if HAVE_DECL_ALARM
+  /* Declare failure if test takes too long, by using default abort
+     caused by SIGALRM.  */
+  int alarm_value = 5;
+  signal (SIGALRM, SIG_DFL);
+  alarm (alarm_value);
+#endif
+
+  {
+    char *result;
+
+    errno = 0;
+    result = ptsname (-1);
+    ASSERT (result == NULL);
+    ASSERT (errno == EBADF
+            || errno == ENOTTY /* seen on glibc */
+           );
+  }
+
   {
     int fd;
     char *result;
@@ -54,13 +98,37 @@ main (void)
     close (fd);
   }
 
-  /* Try various master names of MacOS X.  */
+#if defined __sun
+  /* Solaris has BSD-style /dev/pty[p-r][0-9a-f] files, but the function
+     ptsname() does not work on them.  */
+  {
+    int fd;
+    char *result;
+
+    /* Open the controlling tty of the current process.  */
+    fd = open ("/dev/ptmx", O_RDWR | O_NOCTTY);
+    if (fd < 0)
+      {
+        fprintf (stderr, "Skipping test: cannot open pseudo-terminal\n");
+        return 77;
+      }
+
+    result = ptsname (fd);
+    ASSERT (result != NULL);
+    ASSERT (memcmp (result, "/dev/pts/", 9) == 0);
+
+    close (fd);
+  }
+
+#else
+
+  /* Try various master names of Mac OS X: /dev/pty[p-w][0-9a-f]  */
   {
     int char1;
     int char2;
 
     for (char1 = 'p'; char1 <= 'w'; char1++)
-      for (char2 = '0'; char2 <= 'f'; char2 = (char2 == '9' ? 'a' : char2 + 1))
+      for (char2 = '0'; char2 <= 'f'; (char2 == '9' ? char2 = 'a' : char2++))
         {
           char master_name[32];
           int fd;
@@ -75,12 +143,44 @@ main (void)
               result = ptsname (fd);
               ASSERT (result != NULL);
               sprintf (slave_name, "/dev/tty%c%c", char1, char2);
-              ASSERT (strcmp (result, slave_name) == 0);
+              ASSERT (same_slave (result, slave_name));
 
               close (fd);
             }
         }
   }
 
+  /* Try various master names of *BSD: /dev/pty[p-sP-S][0-9a-v]  */
+  {
+    int upper;
+    int char1;
+    int char2;
+
+    for (upper = 0; upper <= 1; upper++)
+      for (char1 = (upper ? 'P' : 'p'); char1 <= (upper ? 'S' : 's'); char1++)
+        for (char2 = '0'; char2 <= 'v'; (char2 == '9' ? char2 = 'a' : char2++))
+          {
+            char master_name[32];
+            int fd;
+
+            sprintf (master_name, "/dev/pty%c%c", char1, char2);
+            fd = open (master_name, O_RDONLY);
+            if (fd >= 0)
+              {
+                char *result;
+                char slave_name[32];
+
+                result = ptsname (fd);
+                ASSERT (result != NULL);
+                sprintf (slave_name, "/dev/tty%c%c", char1, char2);
+                ASSERT (same_slave (result, slave_name));
+
+                close (fd);
+              }
+          }
+  }
+
+#endif
+
   return 0;
 }