Include unistd.h where used

Include unistd.h in all files that use it, instead
of relying on it being pulled in via virutil.h

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>

src/lxc/lxc_conf.c

@@ -23,6 +23,8 @@
 /* includes */
 #include <config.h>
 
+#include <unistd.h>
+
 #include "lxc_conf.h"
 #include "lxc_domain.h"
 #include "virerror.h"

src/lxc/lxc_fuse.c

@@ -23,6 +23,7 @@
 #include <fcntl.h>
 #include <sys/mount.h>
 #include <mntent.h>
+#include <unistd.h>
 
 #include "lxc_fuse.h"
 #include "lxc_cgroup.h"

src/util/virperf.c

@@ -17,6 +17,7 @@
  */
 #include <config.h>
 
+#include <unistd.h>
 #ifndef WIN32
 # include <sys/ioctl.h>
 #endif

src/util/virpolkit.c

@@ -20,6 +20,7 @@
  */
 
 #include <config.h>
+#include <unistd.h>
 
 #include "virpolkit.h"
 #include "virerror.h"

src/util/virresctrl.c

@@ -22,6 +22,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #define LIBVIRT_VIRRESCTRLPRIV_H_ALLOW
 #include "virresctrlpriv.h"

tests/objecteventtest.c

@@ -19,6 +19,8 @@
 
 #include <config.h>
 
+#include <unistd.h>
+
 #include "testutils.h"
 
 #include "virerror.h"

tests/scsihosttest.c

@@ -25,6 +25,7 @@
 
 # include <fcntl.h>
 # include <sys/stat.h>
+# include <unistd.h>
 # include "virstring.h"
 # include "virerror.h"
 # include "virlog.h"

tests/vboxsnapshotxmltest.c

@@ -1,5 +1,7 @@
 #include <config.h>
 
+#include <unistd.h>
+
 #include "testutils.h"
 
 #ifdef WITH_VBOX

tests/virfiletest.c

@@ -19,6 +19,7 @@
 #include <config.h>
 
 #include <fcntl.h>
+#include <unistd.h>
 
 #include "testutils.h"
 #include "virfile.h"

tests/virscsitest.c

@@ -19,6 +19,7 @@
 
 #include <config.h>
 
+#include <unistd.h>
 
 #include "virscsi.h"
 #include "testutils.h"

tests/virstoragetest.c

@@ -18,6 +18,7 @@
 
 #include <config.h>
 
+#include <unistd.h>
 
 #include "testutils.h"
 #include "vircommand.h"

tests/virsystemdtest.c

@@ -24,6 +24,7 @@
 
 # include <dbus/dbus.h>
 # include <fcntl.h>
+# include <unistd.h>
 
 # define LIBVIRT_VIRSYSTEMDPRIV_H_ALLOW
 # include "virsystemdpriv.h"