[FFmpeg-cvslog] file: Fallback to stat() based file_check() when access() or its named flags are unavailable.

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue Nov 27 04:57:18 2012 +0100| [16ef48c37fadb251a76dac8e000be5caa6ffd25f] | committer: Michael Niedermayer

file: Fallback to stat() based file_check() when access() or its named flags are unavailable.

Should fix compilation on native windows
We could also use _access() and literal numbers as flags but i cant test it
and the compilation failure should be fixed ASAP

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=16ef48c37fadb251a76dac8e000be5caa6ffd25f
---

 libavformat/file.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libavformat/file.c b/libavformat/file.c
index 44a1558..840d368 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -85,6 +85,7 @@ static int file_get_handle(URLContext *h)
 
 static int file_check(URLContext *h, int mask)
 {
+#if defined(HAVE_ACCESS) && defined(R_OK)
     int ret = 0;
     if (access(h->filename, F_OK) < 0)
         return AVERROR(errno);
@@ -94,6 +95,15 @@ static int file_check(URLContext *h, int mask)
     if (mask&AVIO_FLAG_WRITE)
         if (access(h->filename, W_OK) >= 0)
             ret |= AVIO_FLAG_WRITE;
+#else
+    struct stat st;
+    int ret = stat(h->filename, &st);
+    if (ret < 0)
+        return AVERROR(errno);
+
+    ret |= st.st_mode&S_IRUSR ? mask&AVIO_FLAG_READ  : 0;
+    ret |= st.st_mode&S_IWUSR ? mask&AVIO_FLAG_WRITE : 0;
+#endif
     return ret;
 }