X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Ffile.c;h=fc8d17411957882b8d88dacbdc9112753072004f;hb=f27ac6d83c3d90cac49230480a8569a1651763bd;hp=64f8782c97637a4065c2733d92d29429c12c6732;hpb=ab8cfd45f8dcff5a9d60271b30dc4437756d5985;p=ffmpeg

diff --git a/libavformat/file.c b/libavformat/file.c
index 64f8782c976..fc8d1741195 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -60,9 +60,9 @@ static int file_open(URLContext *h, const char *filename, int flags)
 
     av_strstart(filename, "file:", &filename);
 
-    if (flags & AVIO_RDWR) {
+    if (flags & AVIO_FLAG_WRITE && flags & AVIO_FLAG_READ) {
         access = O_CREAT | O_TRUNC | O_RDWR;
-    } else if (flags & AVIO_WRONLY) {
+    } else if (flags & AVIO_FLAG_WRITE) {
         access = O_CREAT | O_TRUNC | O_WRONLY;
     } else {
         access = O_RDONLY;
@@ -95,6 +95,19 @@ static int file_close(URLContext *h)
     return close(fd);
 }
 
+static int file_check(URLContext *h, int mask)
+{
+    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;
+
+    return ret;
+}
+
 URLProtocol ff_file_protocol = {
     .name                = "file",
     .url_open            = file_open,
@@ -103,6 +116,7 @@ URLProtocol ff_file_protocol = {
     .url_seek            = file_seek,
     .url_close           = file_close,
     .url_get_file_handle = file_get_handle,
+    .url_check           = file_check,
 };
 
 #endif /* CONFIG_FILE_PROTOCOL */
@@ -117,7 +131,7 @@ static int pipe_open(URLContext *h, const char *filename, int flags)
 
     fd = strtol(filename, &final, 10);
     if((filename == final) || *final ) {/* No digits found, or something like 10ab */
-        if (flags & AVIO_WRONLY) {
+        if (flags & AVIO_FLAG_WRITE) {
             fd = 1;
         } else {
             fd = 0;
@@ -137,6 +151,7 @@ URLProtocol ff_pipe_protocol = {
     .url_read            = file_read,
     .url_write           = file_write,
     .url_get_file_handle = file_get_handle,
+    .url_check           = file_check,
 };
 
 #endif /* CONFIG_PIPE_PROTOCOL */