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| author | Alexander Larsson <alexl@src.gnome.org> | 2007-09-13 14:55:05 +0000 |
|---|---|---|
| committer | Alexander Larsson <alexl@src.gnome.org> | 2007-09-13 14:55:05 +0000 |
| commit | 959f3e0c528174947f4fa4f1812902f2de5e8a7a (patch) | |
| tree | ababf08caa985c55c55462c8942c88e26a913998 | |
| parent | fc500fdc629cf7908b2df3444464a437ff708a53 (diff) | |
| download | gvfs-959f3e0c528174947f4fa4f1812902f2de5e8a7a.tar.gz | |
Implement truncate for GLocalFileOutputStream
Original git commit by Alexander Larsson <alexl@redhat.com> at 1188208427 +0200
svn path=/trunk/; revision=806
| -rw-r--r-- | gio/glocalfileoutputstream.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gio/glocalfileoutputstream.c b/gio/glocalfileoutputstream.c index f0d7dddd..55dc4871 100644 --- a/gio/glocalfileoutputstream.c +++ b/gio/glocalfileoutputstream.c @@ -52,6 +52,11 @@ static gboolean g_local_file_output_stream_seek (GFileOutputStream * GSeekType type, GCancellable *cancellable, GError **error); +static gboolean g_local_file_output_stream_can_truncate (GFileOutputStream *stream); +static gboolean g_local_file_output_stream_truncate (GFileOutputStream *stream, + goffset size, + GCancellable *cancellable, + GError **error); static void g_local_file_output_stream_finalize (GObject *object) @@ -87,6 +92,8 @@ g_local_file_output_stream_class_init (GLocalFileOutputStreamClass *klass) file_stream_class->tell = g_local_file_output_stream_tell; file_stream_class->can_seek = g_local_file_output_stream_can_seek; file_stream_class->seek = g_local_file_output_stream_seek; + file_stream_class->can_truncate = g_local_file_output_stream_can_truncate; + file_stream_class->truncate = g_local_file_output_stream_truncate; } static void @@ -339,6 +346,53 @@ g_local_file_output_stream_seek (GFileOutputStream *stream, return TRUE; } +static gboolean +g_local_file_output_stream_can_truncate (GFileOutputStream *stream) +{ + /* We can't truncate pipes and stuff where we can't seek */ + return g_local_file_output_stream_can_seek (stream); +} + +static gboolean +g_local_file_output_stream_truncate (GFileOutputStream *stream, + goffset size, + GCancellable *cancellable, + GError **error) +{ + GLocalFileOutputStream *file; + int res; + + file = G_LOCAL_FILE_OUTPUT_STREAM (stream); + + restart: + res = ftruncate(file->priv->fd, size); + + if (res == -1) + { + if (errno == EINTR) + { + if (g_cancellable_is_cancelled (cancellable)) + { + g_set_error (error, + G_IO_ERROR, + G_IO_ERROR_CANCELLED, + _("Operation was cancelled")); + return FALSE; + } + goto restart; + } + + g_set_error (error, G_IO_ERROR, + g_io_error_from_errno (errno), + _("Error truncating file: %s"), + g_strerror (errno)); + return FALSE; + } + + return TRUE; +} + + static GFileInfo * g_local_file_output_stream_get_file_info (GFileOutputStream *stream, char *attributes, |