[FFmpeg-cvslog] random_seed: Only read /dev/*random if we have unistd.h

[Ronald S. Bultje]

ffmpeg | branch: master | Ronald S. Bultje <rsbultje at gmail.com> | Sun Jun 24 21:26:31 2012 +0300| [a4d71eb5c3a6265afee1c25fea549dd071c1f4a6] | committer: Michael Niedermayer

random_seed: Only read /dev/*random if we have unistd.h

unistd.h is used for open/read/close, but if this header does not
exist, there's probably no use in trying to open /dev/*random
at all.

Signed-off-by: Martin Storsjö <martin at martin.st>
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a4d71eb5c3a6265afee1c25fea549dd071c1f4a6
---

 libavutil/random_seed.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libavutil/random_seed.c b/libavutil/random_seed.c
index d56280d..e60ace0 100644
--- a/libavutil/random_seed.c
+++ b/libavutil/random_seed.c
@@ -18,7 +18,11 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "config.h"
+
+#if HAVE_UNISTD_H
 #include <unistd.h>
+#endif
 #include <fcntl.h>
 #include <math.h>
 #include <time.h>
@@ -34,6 +38,7 @@
 
 static int read_random(uint32_t *dst, const char *file)
 {
+#if HAVE_UNISTD_H
     int fd = open(file, O_RDONLY);
     int err = -1;
 
@@ -43,6 +48,9 @@ static int read_random(uint32_t *dst, const char *file)
     close(fd);
 
     return err;
+#else
+    return -1;
+#endif
 }
 
 static uint32_t get_generic_seed(void)