[U-Boot] [PATCH v2 7/8] sandbox: Add flags for open() call

[Simon Glass]

This provides a way for callers to create files for writing. We define
flags which mirror the POSIX values.

Another approach would be to translate the flags at runtime. Perhaps we can
leave to whoever wants to port this to another OS?

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/sandbox/cpu/os.c |    2 +-
 include/os.h          |   18 +++++++++++++-----
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index 093e7dc..9f93f83 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -47,7 +47,7 @@ ssize_t os_write(int fd, const void *buf, size_t count)
 
 int os_open(const char *pathname, int flags)
 {
-	return open(pathname, flags);
+	return open(pathname, flags, 0777);
 }
 
 int os_close(int fd)
diff --git a/include/os.h b/include/os.h
index f3af4f0..66e60f8 100644
--- a/include/os.h
+++ b/include/os.h
@@ -1,4 +1,9 @@
 /*
+ * Operating System Interface
+ *
+ * This provides access to useful OS routines for the sandbox architecture.
+ * They are kept in a separate file so we can include system headers.
+ *
  * Copyright (c) 2011 The Chromium OS Authors.
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -19,11 +24,7 @@
  * MA 02111-1307 USA
  */
 
-/*
- * Operating System Interface
- *
- * This provides access to useful OS routines from the sandbox architecture
- */
+struct sandbox_state;
 
 /**
  * Access to the OS read() system call
@@ -45,6 +46,13 @@ ssize_t os_read(int fd, void *buf, size_t count);
  */
 ssize_t os_write(int fd, const void *buf, size_t count);
 
+enum {
+	OS_O_RDONLY,
+	OS_O_WRONLY,
+	OS_O_RDWR,
+	OS_O_CREAT	= 0100,
+};
+
 /**
  * Access to the OS open() system call
  *
-- 
1.7.3.1