fs : scfs: Start SCFS module

Martin Lenders · miri64 · commit 6f9b03e569ba · 2014-07-29T23:40:54.000+02:00
diff --git a/Makefile.dep b/Makefile.dep
@@ -71,6 +71,14 @@ endif
 
 ifneq (,$(filter net_if,$(USEMODULE)))
 	USEMODULE += transceiver
+endif
+
+ifneq (,$(filter scfs,$(USEMODULE)))
+	USEMODULE += fs
+	USEMODULE += shell_commands
+endif
+
+ifneq (,$(filter shell_commands,$(USEMODULE)))
 	USEMODULE += net_help
 endif
 
diff --git a/sys/Makefile b/sys/Makefile
@@ -4,6 +4,9 @@ endif
 ifneq (,$(filter config,$(USEMODULE)))
     DIRS += config
 endif
+ifneq (,$(filter fs,$(USEMODULE)))
+    DIRS += fs
+endif
 ifneq (,$(filter lib,$(USEMODULE)))
     DIRS += lib
 endif
@@ -22,6 +25,9 @@ endif
 ifneq (,$(filter pthread,$(USEMODULE)))
     DIRS += posix/pthread
 endif
+ifneq (,$(filter scfs,$(USEMODULE)))
+    DIRS += fs/scfs
+endif
 ifneq (,$(filter shell,$(USEMODULE)))
     DIRS += shell
 endif
diff --git a/sys/fs/scfs/Makefile b/sys/fs/scfs/Makefile
@@ -0,0 +1,3 @@
+MODULE =scfs
+
+include $(RIOTBASE)/Makefile.base
diff --git a/sys/fs/scfs/scfs.c b/sys/fs/scfs/scfs.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2014 Martin Lenders
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
+#include <errno.h>
+
+#include "fs.h"
+#include "scfs.h"
+#include "shell_commands.h"
+
+static int busy = 0;
+
+int scfs_mount(const char *mount_point)
+{
+    if (busy) {
+        errno = EBUSY;
+        return -EBUSY;
+    }
+
+    return fs_mount(mount_point, 0, FS_SCFS);
+}
+
+int scfs_unmount(const char *mount_point)
+{
+    if (!busy) {
+        return 0;
+    }
+
+    return fs_unmount(mount_point, 0);
+}
diff --git a/sys/include/scfs.h b/sys/include/scfs.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2014 Martin Lenders
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
+/**
+ * @addtogroup  fs
+ * @{
+ *
+ * @file        scfs.h
+ * @brief       A simple file system that emulates commands from the shell
+ *              command module as binary files
+ *
+ * @author      Freie Universität Berlin
+ * @author      Martine Lenders
+ */
+
+#ifndef __SCFS_H_
+#define __SCFS_H_
+
+#include <sys/stat.h>
+
+/**
+ * @brief Initializes SCFS.
+ *
+ * @param[in] mount_point   Path where to mount SCFS
+ *
+ * @return  0, on success
+ * @return  other on error, errno is set accordingly
+ */
+int scfs_mount(const char *mount_point);
+
+/**
+ * @brief Removes SCFS.
+ *
+ * @param[in] mount_point   Path where SCFS is mounted
+ *
+ * @return  0, on success
+ * @return  other on error, errno is set accordingly
+ */
+int scfs_unmount(const char *mount_point);
+
+/**
+ * @brief Get file status.
+ *
+ * @param[in] path  Path to the file.
+ * @param[out] stat The status of the file.
+ *
+ * @return 0, on success.
+ * @return -1, on failure. *errno* is set appropriatly.
+ */
+int scfs_stat(const char *path, struct stat *stat);
+
+/**
+ * @brief Executes a file.
+ *
+ * @param[in] path  Path to the file.
+ * @param[in] argv  NULL-terminated array of command line arguments. By
+ *                  convention, the first argument must the calling name of
+ *                  the executed file.
+ * @param[in] env   NULL-terminated array of strings, conventionally in the
+ *                  form of "key=value", that represent the environment
+ *                  variables passed to the command.
+ *
+ * @return  The return value of the executed program
+ */
+int scfs_exec(const char *path, const char *argv[], const char *env[]);
+
+#endif /* __SCFS_H_ */

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+MODULE =scfs`
	`2`	`+`
	`3`	`+include $(RIOTBASE)/Makefile.base`