sandbox: add lseek helper
Follow up patches want to be able to seek fd's.
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index 093e7dc..f6d0e84 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -45,6 +45,19 @@
return write(fd, buf, count);
}
+off_t os_lseek(int fd, off_t offset, int whence)
+{
+ if (whence == OS_SEEK_SET)
+ whence = SEEK_SET;
+ else if (whence == OS_SEEK_CUR)
+ whence = SEEK_CUR;
+ else if (whence == OS_SEEK_END)
+ whence = SEEK_END;
+ else
+ os_exit(1);
+ return lseek(fd, offset, whence);
+}
+
int os_open(const char *pathname, int flags)
{
return open(pathname, flags);