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Re: [libvirt] [PATCH 1/1] lxc: use our own hand-rolled code in place of unlockpt and grantpt (v2)



On Wed, Oct 19, 2011 at 02:47:36PM -0600, Eric Blake wrote:
> Looks good (better would be using openpty(), once gnulib changes
> that to LGPLv2+, but I'll deal with that in a later patch).  So,
> while waiting on gnulib changes, I'll temporarily #ifdef out this
> code so that I don't break mingw compilation.

Unfortuntely it broke anyway.

> ACK to the intent and to incorporating previous review comments.
> Here's what I squashed in before pushing:

> diff --git i/src/util/util.c w/src/util/util.c
> index 1ec36f1..b2cdf6a 100644
> --- i/src/util/util.c
> +++ w/src/util/util.c
> @@ -1106,6 +1106,12 @@ int virFileOpenTty(int *ttymaster,
>  {
>      int rc = -1;
> 
> +#ifdef WIN32
> +    /* mingw completely lacks pseudo-terminals.  */
> +    errno = ENOSYS;
> +
> +#else /* !WIN32 */
> +
>      if ((*ttymaster = posix_openpt(O_RDWR|O_NOCTTY|O_NONBLOCK)) < 0)
>          goto cleanup;
> 
> @@ -1144,8 +1150,8 @@ cleanup:
>      if (rc != 0)
>          VIR_FORCE_CLOSE(*ttymaster);
> 
> +#endif /* !WIN32 */
>      return rc;
> -
>  }

cc1: warnings being treated as errors
../../src/util/util.c: In function 'virFileOpenTty':
../../src/util/util.c:1103:25: error: unused parameter 'ttymaster' [-Wunused-parameter]
../../src/util/util.c:1104:27: error: unused parameter 'ttyName' [-Wunused-parameter]
../../src/util/util.c:1105:24: error: unused parameter 'rawmode' [-Wunused-parameter]

Here's what I'm pushing as a build breaker fix

diff --git a/src/util/util.c b/src/util/util.c
index 01146f5..af27344 100644
--- a/src/util/util.c
+++ b/src/util/util.c
@@ -1099,20 +1099,13 @@ virFileBuildPath(const char *dir, const char *name, const char *ext)
     return path;
 }
 
-
+#ifndef WIN32
 int virFileOpenTty(int *ttymaster,
                    char **ttyName,
                    int rawmode)
 {
     int rc = -1;
 
-#ifdef WIN32
-    /* mingw completely lacks pseudo-terminals, and the gnulib
-     * replacements are not (yet) license compatible.  */
-    errno = ENOSYS;
-
-#else /* !WIN32 */
-
     if ((*ttymaster = posix_openpt(O_RDWR|O_NOCTTY|O_NONBLOCK)) < 0)
         goto cleanup;
 
@@ -1151,9 +1144,19 @@ cleanup:
     if (rc != 0)
         VIR_FORCE_CLOSE(*ttymaster);
 
-#endif /* !WIN32 */
     return rc;
 }
+#else /* WIN32 */
+int virFileOpenTty(int *ttymaster ATTRIBUTE_UNUSED,
+                   char **ttyName ATTRIBUTE_UNUSED,
+                   int rawmode ATTRIBUTE_UNUSED)
+{
+    /* mingw completely lacks pseudo-terminals, and the gnulib
+     * replacements are not (yet) license compatible.  */
+    errno = ENOSYS;
+    return -1;
+}
+#endif /* WIN32 */
 
 /*
  * Creates an absolute path for a potentially relative path.


Daniel
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