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eec9bd8db3
This seems to happen when another client is accessing the file at the same time, and retrying after a short amount of time solves it. Sometimes partial data is written at that point already but we have no idea how much it is, or if what was written is correct (it sometimes isn't) so we always first seek back to the current position and repeat the whole failed write. It happens at least on Linux and macOS on SMB/CIFS and NFS file systems. Between write attempts that failed with EACCES we wait 10ms, and after enough consecutive tries that failed with EACCES we simply time out. In theory a valid EACCES for files to which we simply have no access should've happened already during the call to open(), except for NFS (see open(2)). This can be enabled with the new max-transient-error-timeout property, and a new o-sync boolean property was added to open the file in O_SYNC mode as without that it's not guaranteed that we get EACCES for the actual writev() call that failed but might only get it at a later time. Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/issues/305
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gst_private.h: Private header for within libgst
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_ELEMENTS_PRIVATE_H__
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#define __GST_ELEMENTS_PRIVATE_H__
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#include "gst/gst.h"
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G_BEGIN_DECLS
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G_GNUC_INTERNAL
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gchar * gst_buffer_get_flags_string (GstBuffer *buffer);
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G_GNUC_INTERNAL
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gchar * gst_buffer_get_meta_string (GstBuffer * buffer);
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G_GNUC_INTERNAL
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GstFlowReturn gst_writev_buffers (GstObject * sink, gint fd, GstPoll * fdset,
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GstBuffer ** buffers, guint num_buffers,
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guint8 * mem_nums, guint total_mem_num,
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guint64 * bytes_written, guint64 skip,
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gint max_transient_error_timeout, guint64 current_position,
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gboolean * flushing);
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G_END_DECLS
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#endif /* __GST_ELEMENTS_PRIVATE_H__ */
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