import newlib-2000-02-17 snapshot

1 files changed, 144 insertions, 0 deletions

diff --git a/newlib/libc/reent/execr.c b/newlib/libc/reent/execr.c
new file mode 100644
index 000000000..9e8f75a65
--- /dev/null
+++ b/newlib/libc/reent/execr.c
@@ -0,0 +1,144 @@
+/* Reentrant versions of execution system calls.  These
+   implementations just call the usual system calls.  */
+
+#include <reent.h>
+#include <unistd.h>
+#include <_syslist.h>
+
+/* Some targets provides their own versions of these functions.  Those
+   targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS.  */
+
+#ifdef _REENT_ONLY
+#ifndef REENTRANT_SYSCALLS_PROVIDED
+#define REENTRANT_SYSCALLS_PROVIDED
+#endif
+#endif
+
+/* If NO_EXEC is defined, we don't need these functions.  */
+
+#if defined (REENTRANT_SYSCALLS_PROVIDED) || defined (NO_EXEC)
+
+int _dummy_exec_syscalls = 1;
+
+#else
+
+/* We use the errno variable used by the system dependent layer.  */
+#undef errno
+extern int errno;
+
+/*
+FUNCTION
+	<<_execve_r>>---Reentrant version of execve	
+INDEX
+	_execve_r
+
+ANSI_SYNOPSIS
+	#include <reent.h>
+	int _execve_r(struct _reent *<[ptr]>, char *<[name]>,
+                      char **<[argv]>, char **<[env]>);
+
+TRAD_SYNOPSIS
+	#include <reent.h>
+	int _execve_r(<[ptr]>, <[name]>, <[argv]>, <[env]>)
+	struct _reent *<[ptr]>;
+        char *<[name]>;
+        char **<[argv]>;
+        char **<[env]>;
+
+DESCRIPTION
+	This is a reentrant version of <<execve>>.  It
+	takes a pointer to the global data block, which holds
+	<<errno>>.
+*/
+
+int
+_execve_r (ptr, name, argv, env)
+     struct _reent *ptr;
+     char *name;
+     char **argv;
+     char **env;
+{
+  int ret;
+
+  errno = 0;
+  if ((ret = _execve (name, argv, env)) == -1 && errno != 0)
+    ptr->_errno = errno;
+  return ret;
+}
+
+
+/*
+FUNCTION
+	<<_fork_r>>---Reentrant version of fork
+	
+INDEX
+	_fork_r
+
+ANSI_SYNOPSIS
+	#include <reent.h>
+	int _fork_r(struct _reent *<[ptr]>);
+
+TRAD_SYNOPSIS
+	#include <reent.h>
+	int _fork_r(<[ptr]>)
+	struct _reent *<[ptr]>;
+
+DESCRIPTION
+	This is a reentrant version of <<fork>>.  It
+	takes a pointer to the global data block, which holds
+	<<errno>>.
+*/
+
+#ifndef NO_FORK
+
+int
+_fork_r (ptr)
+     struct _reent *ptr;
+{
+  int ret;
+
+  errno = 0;
+  if ((ret = _fork ()) == -1 && errno != 0)
+    ptr->_errno = errno;
+  return ret;
+}
+
+#endif
+
+/*
+FUNCTION
+	<<_wait_r>>---Reentrant version of wait
+	
+INDEX
+	_wait_r
+
+ANSI_SYNOPSIS
+	#include <reent.h>
+	int _wait_r(struct _reent *<[ptr]>, int *<[status]>);
+
+TRAD_SYNOPSIS
+	#include <reent.h>
+	int _wait_r(<[ptr]>, <[status]>)
+	struct _reent *<[ptr]>;
+	int *<[status]>;
+
+DESCRIPTION
+	This is a reentrant version of <<wait>>.  It
+	takes a pointer to the global data block, which holds
+	<<errno>>.
+*/
+
+int
+_wait_r (ptr, status)
+     struct _reent *ptr;
+     int *status;
+{
+  int ret;
+
+  errno = 0;
+  if ((ret = _wait (status)) == -1 && errno != 0)
+    ptr->_errno = errno;
+  return ret;
+}
+
+#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */