New API: utsname

Typical output:

><fs> utsname
uts_sysname: Linux
uts_release: 3.5.0-1.fc18.x86_64
uts_version: #1 SMP Mon Jul 23 17:43:39 UTC 2012
uts_machine: x86_64

1 files changed, 62 insertions, 0 deletions

diff --git a/daemon/utsname.c b/daemon/utsname.c
new file mode 100644
index 00000000..dc492261
--- /dev/null
+++ b/daemon/utsname.c
@@ -0,0 +1,62 @@
+/* libguestfs - the guestfsd daemon
+ * Copyright (C) 2012 Red Hat 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/utsname.h>
+
+#include "guestfs_protocol.h"
+#include "daemon.h"
+#include "actions.h"
+
+guestfs_int_utsname *
+do_utsname (void)
+{
+  struct utsname uts;
+  guestfs_int_utsname *ret;
+
+  if (uname (&uts) == -1) {
+    reply_with_perror ("utsname");
+    return NULL;
+  }
+
+  ret = malloc (sizeof *ret);
+  if (ret == NULL) {
+    reply_with_perror ("malloc");
+    return NULL;
+  }
+
+  ret->uts_sysname = strdup (uts.sysname);
+  ret->uts_release = strdup (uts.release);
+  ret->uts_version = strdup (uts.version);
+  ret->uts_machine = strdup (uts.machine);
+  if (!ret->uts_sysname || !ret->uts_release ||
+      !ret->uts_version || !ret->uts_machine) {
+    reply_with_perror ("strdup");
+    free (ret->uts_sysname);
+    free (ret->uts_release);
+    free (ret->uts_version);
+    free (ret->uts_machine);
+    free (ret);
+    return NULL;
+  }
+
+  return ret;
+}