pty layer: added ptyc_alloc_pty(), ptyc_free_pty().

1 files changed, 92 insertions, 0 deletions

diff --git a/src/pty/ptyc_pty_ctx.c b/src/pty/ptyc_pty_ctx.c
new file mode 100644
index 0000000..31a9c26
--- /dev/null
+++ b/src/pty/ptyc_pty_ctx.c
@@ -0,0 +1,92 @@
+/*********************************************************/
+/*  ptycon: a pty-console bridge                         */
+/*  Copyright (C) 2016  Z. Gilboa                        */
+/*  Released under GPLv2 and GPLv3; see COPYING.PTYCON.  */
+/*********************************************************/
+
+#include <psxtypes/psxtypes.h>
+#include <ntapi/ntapi.h>
+#include <ptycon/ptycon.h>
+#include "ptycon_driver_impl.h"
+#include "ptycon_ioctl_impl.h"
+#include "ptycon_status_impl.h"
+
+static int32_t ptyc_pty_open(nt_pty * hptm, nt_guid * pty_guid, nt_pty ** hpty)
+{
+	nt_vfd_dev_name		pty_name;
+	nt_oa			oa = {sizeof(oa),0,0,0,0,0};
+
+	ntapi->vfd_dev_name_init(
+		&pty_name,pty_guid);
+
+	oa.obj_name = &pty_name.name;
+	oa.root_dir = hptm;
+
+	return ntapi->pty_open(
+		0,hpty,
+		NT_FILE_ALL_ACCESS,
+		&oa,0,0,0);
+}
+
+static int32_t ptyc_ptm_open(const struct ptyc_common_ctx * cctx)
+{
+	nt_guid pty_guid = TTY_PTM_GUID;
+	return ptyc_pty_open(
+		0,&pty_guid,
+		(nt_pty **)&cctx->hptm);
+}
+
+static int32_t ptyc_pts_open(const struct ptyc_common_ctx * cctx)
+{
+	int32_t status;
+	nt_guid pty_guid = TTY_PTS_GUID;
+
+	if ((status = ptyc_grant(cctx->hptm)))
+		return status;
+
+	return ptyc_pty_open(
+		cctx->hptm,&pty_guid,
+		(nt_pty **)&cctx->hpts);
+}
+
+int ptyc_alloc_pty(struct ptyc_driver_ctx * dctx)
+{
+	int32_t status;
+
+	if (dctx->cctx->hpts || dctx->cctx->hptm)
+		return ptyc_set_status(
+			dctx,NT_STATUS_DEVICE_ALREADY_ATTACHED);
+
+	if ((status = ptyc_ptm_open(dctx->cctx)))
+		return ptyc_set_status(
+			dctx,status);
+
+	if (!(dctx->cctx->drvflags & PTYC_DRIVER_DBG_OVEN)
+			&& !(dctx->cctx->drvflags & PTYC_DRIVER_DBG_RAW))
+		return ptyc_set_status(
+			dctx,NT_STATUS_SUCCESS);
+
+	if ((status = ptyc_pts_open(dctx->cctx)))
+		return ptyc_set_status(
+			dctx,status);
+
+	return ptyc_set_status(
+		dctx,NT_STATUS_SUCCESS);
+}
+
+void ptyc_free_pty(struct ptyc_driver_ctx * dctx)
+{
+	struct ptyc_common_ctx * cctx;
+
+	cctx = (struct ptyc_common_ctx *)dctx->cctx;
+
+	if (cctx->hpts) {
+		ntapi->pty_close(cctx->hpts);
+		cctx->hpts = 0;
+	}
+
+	if (cctx->hptm) {
+		ntapi->pty_close(cctx->hptm);
+		cctx->hptm = 0;
+	}
+}