lavu/file: include unistd.h only when available

[ffmpeg.git] / libavutil / file.c

diff --git a/libavutil/file.c b/libavutil/file.c
index 3dcce7c..e1d0831 100644 (file)
--- a/libavutil/file.c
+++ b/libavutil/file.c
@@ -17,9 +17,12 @@
  */
 
 #include "file.h"
+#include "log.h"
 #include <fcntl.h>
 #include <sys/stat.h>
+#if HAVE_UNISTD_H
 #include <unistd.h>
+#endif
 #if HAVE_MMAP
 #include <sys/mman.h>
 #elif HAVE_MAPVIEWOFFILE
@@ -75,7 +78,7 @@ int av_file_map(const char *filename, uint8_t **bufptr, size_t *size,
 
 #if HAVE_MMAP
     ptr = mmap(NULL, *size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
-    if ((int)(ptr) == -1) {
+    if (ptr == MAP_FAILED) {
         err = AVERROR(errno);
         av_strerror(err, errbuf, sizeof(errbuf));
         av_log(&file_log_ctx, AV_LOG_ERROR, "Error occurred in mmap(): %s\n", errbuf);
@@ -128,21 +131,3 @@ void av_file_unmap(uint8_t *bufptr, size_t size)
     av_free(bufptr);
 #endif
 }
-
-#ifdef TEST
-
-#undef printf
-
-int main(void)
-{
-    uint8_t *buf;
-    size_t size;
-    if (av_file_map("file.c", &buf, &size, 0, NULL) < 0)
-        return 1;
-
-    buf[0] = 's';
-    printf("%s", buf);
-    av_file_unmap(buf, size);
-    return 0;
-}
-#endif