diff options
| author | Tobias Rapp <t.rapp@noa-audio.com> | 2015-10-29 11:11:37 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-11-02 19:40:49 +0300 |
| commit | 474665346616e446ecd1407002fdf5f88201bf72 (patch) | |
| tree | 48189136709a962fce7ef4f811516d4d0dc198ce /libavutil/file_open.c | |
| parent | 9ae73d0644cde27d3d93d41a5d8bc94de853ea91 (diff) | |
avutil/file_open: avoid file handle inheritance on Windows
Avoids inheritance of file handles on Windows systems similar to the
O_CLOEXEC/FD_CLOEXEC flag on Linux.
Fixes file lock issues in Windows applications when a child process
is started with handle inheritance enabled (standard input/output
redirection) while a FFmpeg transcoding is running in the parent
process.
Links relevant to the subject:
https://msdn.microsoft.com/en-us/library/w7sa2b22.aspx
Describes the _wsopen() function and the O_NOINHERIT flag. File handles
opened by _wsopen() are inheritable by default.
https://msdn.microsoft.com/en-us/library/windows/desktop/ms682425%28v=vs.85%29.aspx
Describes handle inheritance when creating new processes. Handle
inheritance must be enabled (bInheritHandles = TRUE) e.g. when you want
to pass handles for stdin/stdout via lpStartupInfo.
Signed-off-by: Tobias Rapp <t.rapp@noa-audio.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavutil/file_open.c')
| -rw-r--r-- | libavutil/file_open.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavutil/file_open.c b/libavutil/file_open.c index 3f9a67c3fc..9e76127919 100644 --- a/libavutil/file_open.c +++ b/libavutil/file_open.c @@ -77,6 +77,9 @@ int avpriv_open(const char *filename, int flags, ...) #ifdef O_CLOEXEC flags |= O_CLOEXEC; #endif +#ifdef O_NOINHERIT + flags |= O_NOINHERIT; +#endif fd = open(filename, flags, mode); #if HAVE_FCNTL |