diff options
Diffstat (limited to 'nuttx/fs/nxffs/nxffs_stat.c')
-rw-r--r-- | nuttx/fs/nxffs/nxffs_stat.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/nuttx/fs/nxffs/nxffs_stat.c b/nuttx/fs/nxffs/nxffs_stat.c new file mode 100644 index 000000000..afb18093c --- /dev/null +++ b/nuttx/fs/nxffs/nxffs_stat.c @@ -0,0 +1,186 @@ +/**************************************************************************** + * fs/nxffs/nxffs_stat.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * References: Linux/Documentation/filesystems/romfs.txt + * + * 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 <sys/stat.h> +#include <sys/statfs.h> + +#include <string.h> +#include <fcntl.h> +#include <assert.h> +#include <debug.h> + +#include <nuttx/fs/fs.h> +#include <nuttx/mtd.h> + +#include "nxffs.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxffs_statfs + * + * Description: Return filesystem statistics + * + ****************************************************************************/ + +int nxffs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf) +{ + FAR struct nxffs_volume_s *volume; + int ret; + + fvdbg("Entry\n"); + + /* Sanity checks */ + + DEBUGASSERT(mountpt && mountpt->i_private); + + /* Get the mountpoint private data from the NuttX inode structure */ + + volume = mountpt->i_private; + ret = sem_wait(&volume->exclsem); + if (ret != OK) + { + goto errout; + } + + /* Fill in the statfs info */ +#warning "Need f_bfree, f_bavail, f_files, f_ffree calculation" + + memset(buf, 0, sizeof(struct statfs)); + buf->f_type = NXFFS_MAGIC; + buf->f_bsize = volume->geo.blocksize; + buf->f_blocks = volume->nblocks; + buf->f_namelen = volume->geo.blocksize - SIZEOF_NXFFS_BLOCK_HDR - SIZEOF_NXFFS_INODE_HDR; + ret = OK; + + sem_post(&volume->exclsem); +errout: + return ret; +} + +/**************************************************************************** + * Name: nxffs_stat + * + * Description: Return information about a file or directory + * + ****************************************************************************/ + +int nxffs_stat(FAR struct inode *mountpt, FAR const char *relpath, + FAR struct stat *buf) +{ + FAR struct nxffs_volume_s *volume; + struct nxffs_entry_s entry; + int ret; + + fvdbg("Entry\n"); + + /* Sanity checks */ + + DEBUGASSERT(mountpt && mountpt->i_private && buf); + + /* Get the mountpoint private data from the NuttX inode structure */ + + volume = mountpt->i_private; + ret = sem_wait(&volume->exclsem); + if (ret != OK) + { + goto errout; + } + + /* Initialize the return stat instance */ + + memset(buf, 0, sizeof(struct stat)); + buf->st_blksize = volume->geo.blocksize; + buf->st_blocks = entry.datlen / (volume->geo.blocksize - SIZEOF_NXFFS_BLOCK_HDR); + + /* The requested directory must be the volume-relative "root" directory */ + + if (relpath && relpath[0] != '\0') + { + /* Not the top directory.. find the NXFFS inode with this name */ + + ret = nxffs_findinode(volume, relpath, &entry); + if (ret < 0) + { + fdbg("Inode '%s' not found: %d\n", -ret); + goto errout_with_semaphore; + } + + buf->st_mode = S_IFREG|S_IXOTH|S_IXGRP|S_IXUSR; + buf->st_size = entry.datlen; + buf->st_atime = entry.utc; + buf->st_mtime = entry.utc; + buf->st_ctime = entry.utc; + } + else + { + /* It's a read/execute-only directory name */ + + buf->st_mode = S_IFDIR|S_IROTH|S_IRGRP|S_IRUSR|S_IXOTH|S_IXGRP|S_IXUSR; + } + + ret = OK; + +errout_with_semaphore: + sem_post(&volume->exclsem); +errout: + return ret; +} |