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file: implement url_check() callback in the file and pipe protocols

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Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Stefano Sabatini 2010-09-30 13:21:42 +02:00 committed by Anton Khirnov
parent 175389c854
commit 313176565c
1 changed files with 16 additions and 0 deletions
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16
libavformat/file.c
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@ -95,6 +95,20 @@ 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_RDONLY : 0;
ret |= st.st_mode&S_IWUSR ? mask&AVIO_WRONLY : 0;
ret |= st.st_mode&S_IWUSR && st.st_mode&S_IRUSR ? mask&AVIO_RDWR : 0;
return ret;
}
URLProtocol ff_file_protocol = {
.name = "file",
.url_open = file_open,
@ -103,6 +117,7 @@ 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 */
@ -137,6 +152,7 @@ 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 */