ntux_cmd_spawn(): initial implementation and integration.

1 files changed, 54 insertions, 0 deletions

diff --git a/src/cmds/ntux_cmd_spawn.c b/src/cmds/ntux_cmd_spawn.c
new file mode 100644
index 0000000..cb88696
--- /dev/null
+++ b/src/cmds/ntux_cmd_spawn.c
@@ -0,0 +1,54 @@
+/***********************************************************/
+/*  ntux: native translation und extension                 */
+/*  Copyright (C) 2016--2018  Z. Gilboa                    */
+/*  Released under GPLv2 and GPLv3; see COPYING.NTUX.      */
+/***********************************************************/
+
+#include <ntapi/ntapi.h>
+#include <psxabi/sys_sysapi.h>
+#include <psxabi/sys_errno.h>
+
+#include <ntux/ntux.h>
+#include "ntux_driver_impl.h"
+#include "ntux_nolibc_impl.h"
+#include "ntux_errinfo_impl.h"
+
+int ntux_cmd_spawn(const struct ntux_driver_ctx * dctx)
+{
+	int32_t		status;
+	pid_t		pid;
+	const char **	argv;
+	const char **	envp;
+	unsigned char * program;
+
+	/* init */
+	ntux_driver_set_ectx(
+		dctx,0,
+		dctx->cctx->sargv[0]);
+
+	argv    = (const char **)dctx->cctx->sargv;
+	envp    = (const char **)dctx->cctx->senvp;
+	program = (unsigned char *)dctx->cctx->sargv[0];
+
+	/* spawn */
+	pid = __sys_vfork();
+
+	/* failed? */
+	if (pid < 0)
+		if (ntux_errno_set(dctx,pid))
+			return NTUX_SYSTEM_ERROR(dctx);
+
+	/* child */
+	if (pid == 0)
+		if ((status = __sys_execve(program,argv,envp)))
+			if (ntux_errno_set(dctx,status))
+				if (NTUX_SYSTEM_ERROR(dctx))
+					__sys_exit(0);
+
+	/* parent */
+	__sys_wait4(
+		pid,&status,
+		0,0);
+
+	return 0;
+}