Fat directory

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@797 42af7a65-404d-4744-a932-0658087f49c3

fs/fat/Make.defs

@@ -0,0 +1,37 @@
+############################################################################
+# Make.defs
+#
+#   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name Nuttx nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+FAT_ASRCS =
+FAT_CSRCS =  fs_fat32.c fs_fat32attrib.c fs_fat32util.c

fs/fat/fs_fat32attrib.c

@@ -0,0 +1,190 @@
+/************************************************************
+ * fs_fat32attrib.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************/
+
+/************************************************************
+ * Compilation Switches
+ ************************************************************/
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+#include <errno.h>
+
+#include <nuttx/fs.h>
+#include <nuttx/fat.h>
+
+#include "fs_internal.h"
+#include "fs_fat32.h"
+
+/************************************************************
+ * Private Functions
+ ************************************************************/
+
+/************************************************************
+ * Name: fat_attrib
+ ************************************************************/
+
+static int fat_attrib(const char *path, fat_attrib_t *retattrib,
+                      fat_attrib_t setbits, fat_attrib_t clearbits)
+{
+  struct fat_mountpt_s *fs;
+  struct fat_dirinfo_s  dirinfo;
+  FAR struct inode     *inode;
+  const char             *relpath = NULL;
+  ubyte                   oldattributes;
+  ubyte                   newattributes;
+  int                     ret;
+
+  /* Get an inode for this file */
+
+  inode = inode_find(path, &relpath);
+  if (!inode)
+    {
+      /* There is no mountpoint that includes in this path */
+
+      ret = ENOENT;
+      goto errout;
+    }
+
+  /* Verify that the inode is a valid mountpoint. */
+
+  if (!INODE_IS_MOUNTPT(inode) || !inode->u.i_mops || !inode->i_private)
+    {
+      ret = ENXIO;
+      goto errout_with_inode;
+    }
+
+  /* Get the mountpoint private data from the inode structure */
+
+  fs = inode->i_private;
+
+  /* Check if the mount is still healthy */
+
+  fat_semtake(fs);
+  ret = fat_checkmount(fs);
+  if (ret != OK)
+    {
+      goto errout_with_semaphore;
+    }
+
+  /* Find the file/directory entry for the oldrelpath */
+
+  ret = fat_finddirentry(fs, &dirinfo, relpath);
+  if (ret != OK)
+    {
+      /* Some error occurred -- probably -ENOENT */
+
+      goto errout_with_semaphore;
+    }
+
+  /* Make sure that we found some valid file or directory */
+
+  if (!dirinfo.fd_entry)
+    {
+      /* Ooops.. we found the root directory */
+
+      ret = EACCES;
+      goto errout_with_semaphore;
+    }
+
+  /* Get the current attributes */
+
+  oldattributes = DIR_GETATTRIBUTES(dirinfo.fd_entry);
+  newattributes = oldattributes;
+
+  /* Set or clear any bits as requested */
+
+  newattributes &= ~(clearbits & (FATATTR_READONLY|FATATTR_HIDDEN|FATATTR_SYSTEM|FATATTR_ARCHIVE));
+  newattributes |=  (setbits   & (FATATTR_READONLY|FATATTR_HIDDEN|FATATTR_SYSTEM|FATATTR_ARCHIVE));
+
+  /* Did any thingchange? */
+
+  if (newattributes != oldattributes)
+    {
+      DIR_PUTATTRIBUTES(dirinfo.fd_entry, newattributes);
+      fs->fs_dirty = TRUE;
+      ret = fat_updatefsinfo(fs);
+      if (ret != OK)
+        {
+          ret = -ret;
+          goto errout_with_semaphore;
+        }
+    }
+
+  /* Success */
+
+  if (retattrib)
+    {
+      *retattrib = newattributes;
+    }
+
+  fat_semgive(fs);
+  inode_release(inode);
+  return OK;
+
+errout_with_semaphore:
+  fat_semgive(fs);
+errout_with_inode:
+  inode_release(inode);
+errout:
+  *get_errno_ptr() = ret;
+  return ERROR;
+}
+
+/************************************************************
+ * Global Functions
+ ************************************************************/
+
+/************************************************************
+ * Name: fat_getattrib
+ ************************************************************/
+
+int fat_getattrib(const char *path, fat_attrib_t *attrib)
+{
+  return fat_attrib(path, attrib, 0, 0);
+}
+
+/************************************************************
+ * Name: fat_setattrib
+ ************************************************************/
+
+int fat_setattrib(const char *path, fat_attrib_t setbits, fat_attrib_t clearbits)
+{
+  return fat_attrib(path, NULL, setbits, clearbits);
+}
+