diff options
Diffstat (limited to 'nuttx/fs/fat/fs_fat32attrib.c')
| -rw-r--r-- | nuttx/fs/fat/fs_fat32attrib.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/nuttx/fs/fat/fs_fat32attrib.c b/nuttx/fs/fat/fs_fat32attrib.c new file mode 100644 index 000000000..f58ed81bb --- /dev/null +++ b/nuttx/fs/fat/fs_fat32attrib.c @@ -0,0 +1,189 @@ +/**************************************************************************** + * fs/fat/fs_fat32attrib.c + * + * Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <errno.h> + +#include <nuttx/fs/fs.h> +#include <nuttx/fs/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; + uint8_t *direntry; + uint8_t oldattributes; + uint8_t 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_root) + { + /* Ooops.. we found the root directory */ + + ret = EACCES; + goto errout_with_semaphore; + } + + /* Get the current attributes */ + + direntry = &fs->fs_buffer[dirinfo.fd_seq.ds_offset]; + oldattributes = DIR_GETATTRIBUTES(direntry); + 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(direntry, 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); +} + |