doc fixes from jmc

1 files changed, 51 insertions, 0 deletions

diff --git a/usr.bin/aucat/pipe.c b/usr.bin/aucat/pipe.c
index 76f98baa832..065f6f0ad7a 100644
--- a/usr.bin/aucat/pipe.c
+++ b/usr.bin/aucat/pipe.c
@@ -139,3 +139,54 @@ pipe_close(struct file *file)
 
 	close(f->fd);
 }
+
+off_t
+pipe_endpos(struct file *file)
+{
+	struct pipe *f = (struct pipe *)file;
+	off_t pos;
+
+	pos = lseek(f->fd, 0, SEEK_END);
+	if (pos < 0) {
+#ifdef DEBUG
+		file_dbg(&f->file);
+		dbg_puts(": couldn't get file size\n");
+#endif
+		return 0;
+	}
+	return pos;
+}
+
+int
+pipe_seek(struct file *file, off_t pos)
+{
+	struct pipe *f = (struct pipe *)file;
+	off_t newpos;
+	
+	newpos = lseek(f->fd, pos, SEEK_SET);
+	if (newpos < 0) {
+#ifdef DEBUG
+		file_dbg(&f->file);
+		dbg_puts(": couldn't seek\n");
+#endif
+		/* XXX: call eof() */
+		return 0;
+	}
+	return 1;
+}
+
+int
+pipe_trunc(struct file *file, off_t pos)
+{
+	struct pipe *f = (struct pipe *)file;
+
+	if (ftruncate(f->fd, pos) < 0) {
+#ifdef DEBUG
+		file_dbg(&f->file);
+		dbg_puts(": couldn't truncate file\n");
+#endif
+		/* XXX: call hup() */
+		return 0;
+	}
+	return 1;
+}