Delete dfs_jffs2.c

components/dfs/filesystems/jffs2/dfs_jffs2.c

@@ -1,687 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2012-1-7       prife        the first version
- */
-
-#include <rtthread.h>
-#include <rtdevice.h>
-
-#include "cyg/infra/cyg_type.h"
-#include "cyg/fileio/fileio.h"
-#include "port/codes.h"
-#include "port/fcntl.h"
-#undef mode_t
-
-#include <dfs_fs.h>
-#include <dfs_file.h>
-
-#include "dfs_jffs2.h"
-#include "jffs2_config.h"
-#include "porting.h"
-#include <string.h>
-
-#if DEVICE_PART_MAX > 1
-    #error "support only one jffs2 partition on a flash device!"
-#endif
-
-/* make sure the following struct var had been initilased to 0! */
-struct device_part
-{
-    struct cyg_mtab_entry * mte;
-    struct rt_mtd_nor_device *dev;
-};
-static struct device_part device_partition[DEVICE_PART_MAX] = {0};
-static struct rt_mutex jffs2_lock;
-
-#define jffs2_mount         jffs2_fste.mount
-#define jffs2_umount        jffs2_fste.umount
-#define jffs2_open          jffs2_fste.open
-#define jffs2_file_unlink   jffs2_fste.unlink
-#define jffs2_mkdir         jffs2_fste.mkdir
-#define jffs2_rmdir         jffs2_fste.rmdir
-#define jffs2_rename        jffs2_fste.rename
-#define jffs2_link          jffs2_fste.link
-#define jffs2_opendir       jffs2_fste.opendir
-#define jffs2_chdir         jffs2_fste.chdir
-#define jffs2_ops_stat      jffs2_fste.stat
-#define jffs2_getinfo       jffs2_fste.getinfo
-#define jffs2_setinfo       jffs2_fste.setinfo
-
-#define jffs2_file_read     jffs2_fileops.fo_read
-#define jffs2_file_write    jffs2_fileops.fo_write
-#define jffs2_file_lseek    jffs2_fileops.fo_lseek
-#define jffs2_file_ioctl    jffs2_fileops.fo_ioctl
-#define jffs2_file_select   jffs2_fileops.fo_select
-#define jffs2_file_fsync    jffs2_fileops.fo_fsync
-#define jffs2_file_colse    jffs2_fileops.fo_close
-#define jffs2_file_fstat    jffs2_fileops.fo_fstat
-#define jffs2_file_getinfo  jffs2_fileops.fo_getinfo
-#define jffs2_file_setinfo  jffs2_fileops.fo_setinfo
-
-#define jffs2_dir_read      jffs2_dirops.fo_read
-//#define jffs2_dir_write   jffs2_dirops.fo_write
-#define jffs2_dir_lseek     jffs2_dirops.fo_lseek
-//#define jffs2_dir_ioctl   jffs2_dirops.fo_ioctl
-#define jffs2_dir_select    jffs2_dirops.fo_select
-//#define jffs2_dir_fsync   jffs2_dirops.fo_fsync
-#define jffs2_dir_colse     jffs2_dirops.fo_close
-//#define jffs2_dir_fstat   jffs2_dirops.fo_fstat
-//#define jffs2_dir_getinfo jffs2_dirops.fo_getinfo
-//#define jffs2_dir_setinfo jffs2_dirops.fo_setinfo
-
-/*
- * RT-Thread Device Interface for jffs2
- */
-
-/* these code is in src/flashio.c */
-static int jffs2_result_to_dfs(int result)
-{
-    if (result < 0) return  result;
-    if (result > 0) return -result;
-
-    return 0;
-}
-
-/*
- * RT-Thread DFS Interface for jffs2
- */
-static int dfs_jffs2_mount(struct dfs_filesystem* fs,
-                    unsigned long rwflag,
-                    const void* data)
-{
-    unsigned index;
-    struct cyg_mtab_entry * mte;
-    int result;
-
-    /* find a empty entry in partition table */
-    for (index = 0; index < DEVICE_PART_MAX; index ++)
-    {
-        if (device_partition[index].dev == RT_NULL)
-            break;
-    }
-    if (index == DEVICE_PART_MAX)
-        return -ENOSPC;
-
-    mte = rt_malloc(sizeof(struct cyg_mtab_entry));
-    if (mte == RT_NULL)
-        return -ENOMEM;
-
-    mte->name = fs->path;
-    mte->fsname = "jffs2";
-    mte->devname = NULL;
-    /* note that, i use mte->data to store rtt's device
-     * while, in jffs2_mount, mte->data will be copy into
-     * s_dev in struct super_block, and mte->data will be
-     * filled with jffs2_sb(see the source of jffs2_mount.
-     */
-    mte->data = (CYG_ADDRWORD)fs->dev_id;
-
-    device_partition[index].dev = RT_MTD_NOR_DEVICE(fs->dev_id);
-    /* after jffs2_mount, mte->data will not be dev_id any more */
-    result = jffs2_mount(NULL, mte);
-    if (result != 0)
-    {
-        device_partition[index].dev = NULL;
-        return jffs2_result_to_dfs(result);
-    }
-
-    /* save this pointer */
-    device_partition[index].mte = mte;
-    return 0;
-}
-
-static int _find_fs(struct cyg_mtab_entry ** mte, rt_device_t dev_id)
-{
-    unsigned index;
-
-    /* find device index */
-    for (index = 0; index < DEVICE_PART_MAX; index++)
-    {
-        if (device_partition[index].dev == RT_MTD_NOR_DEVICE(dev_id))
-        {
-            *mte = device_partition[index].mte;
-            return 0;
-        }
-    }
-
-    rt_kprintf("error, could not found the fs!");
-    return -1;
-}
-
-static int dfs_jffs2_unmount(struct dfs_filesystem* fs)
-{
-    int result;
-    unsigned index;
-
-    /* find device index, then umount it */
-    for (index = 0; index < DEVICE_PART_MAX; index++)
-    {
-        if (device_partition[index].dev == RT_MTD_NOR_DEVICE(fs->dev_id))
-        {
-            result = jffs2_umount(device_partition[index].mte);
-            if (result) return jffs2_result_to_dfs(result);
-
-            rt_free(device_partition[index].mte);
-            device_partition[index].dev = NULL;
-            device_partition[index].mte = NULL;
-            return RT_EOK;
-        }
-    }
-
-    return -ENOENT;
-}
-
-static int dfs_jffs2_mkfs(rt_device_t dev_id)
-{
-    /* just erase all blocks on this nand partition */
-    return -ENOSYS;
-}
-
-static int dfs_jffs2_statfs(struct dfs_filesystem* fs,
-                     struct statfs *buf)
-{
-    /* since the limit of unsigned long, so the max size of flash device is 4G */
-    struct cyg_mtab_entry * mte;
-    struct jffs2_fs_info info;
-    int result;
-
-    result = _find_fs(&mte, fs->dev_id);
-    if (result)
-        return -ENOENT;
-
-    RT_ASSERT(mte->data != 0);
-
-    jffs2_get_info_from_sb((void *)mte->data, &info);
-    buf->f_bsize = info.sector_size;
-    buf->f_blocks = info.nr_blocks;
-    buf->f_bfree = info.free_size / info.sector_size;
-
-    return 0;
-}
-
-static const char jffs2_root_path[] = ".";
-
-static int dfs_jffs2_open(struct dfs_fd* file)
-{
-    int result;
-    int oflag, mode;
-    const char * name;
-    cyg_file * jffs2_file;
-    struct dfs_filesystem *fs;
-    struct cyg_mtab_entry * mte;
-
-    oflag = file->flags;
-    fs = (struct dfs_filesystem *)file->data;
-    RT_ASSERT(fs != RT_NULL);
-
-    jffs2_file = rt_malloc(sizeof(cyg_file));
-    if (jffs2_file == RT_NULL)
-        return -ENOMEM;
-
-    /* just escape '/' provided by dfs code */
-    name = file->path;
-    if ((name[0] == '/') && (name[1] == 0))
-        name = jffs2_root_path;
-    else /* name[0] still will be '/' */
-        name ++;
-
-    result = _find_fs(&mte, fs->dev_id);
-    if (result)
-    {
-        rt_free(jffs2_file);
-        return -ENOENT;
-    }
-
-    /* set mount table */
-    jffs2_file->f_mte = mte;
-
-    if (oflag & O_DIRECTORY) /* operations about dir */
-    {
-        rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-        if (oflag & O_CREAT) /* create a dir*/
-        {
-            /* fixme, should test file->path can end with '/' */
-            result = jffs2_mkdir(mte, mte->root, name);
-            if (result)
-            {
-                rt_mutex_release(&jffs2_lock);
-                rt_free(jffs2_file);
-                return jffs2_result_to_dfs(result);
-            }
-        }
-
-        /* open dir */
-        result = jffs2_opendir(mte, mte->root, name, jffs2_file);
-        rt_mutex_release(&jffs2_lock);
-        if (result)
-        {
-            rt_free(jffs2_file);
-            return jffs2_result_to_dfs(result);
-        }
-#ifdef  CONFIG_JFFS2_NO_RELATIVEDIR
-        jffs2_file->f_offset = 2;
-#endif
-        /* save this pointer, it will be used by dfs_jffs2_getdents*/
-        file->data = jffs2_file;
-        return 0;
-    }
-    /* regular file operations */
-    mode = JFFS2_O_RDONLY;
-    if (oflag & O_WRONLY) mode |= JFFS2_O_WRONLY;
-    if (oflag & O_RDWR)   mode |= JFFS2_O_RDWR;
-    /* Opens the file, if it is existing. If not, a new file is created. */
-    if (oflag & O_CREAT) mode |= JFFS2_O_CREAT;
-    /* Creates a new file. If the file is existing, it is truncated and overwritten. */
-    if (oflag & O_TRUNC) mode |= JFFS2_O_TRUNC;
-    /* Creates a new file. The function fails if the file is already existing. */
-    if (oflag & O_EXCL) mode |= JFFS2_O_EXCL;
-
-    rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-    result = jffs2_open(mte, 0, name, mode, jffs2_file);
-    if (result != 0)
-    {
-        rt_mutex_release(&jffs2_lock);
-        rt_free(jffs2_file);
-        return jffs2_result_to_dfs(result);
-    }
-
-    /* save this pointer, it will be used when calling read(), write(),
-    flush(), lessk(), and will be rt_free when calling close()*/
-    file->data = jffs2_file;
-    file->pos = jffs2_file->f_offset;
-    file->size = 0;
-    jffs2_file_lseek(jffs2_file, (off_t *)(&(file->size)), SEEK_END);
-    jffs2_file->f_offset = (off_t)file->pos;
-    rt_mutex_release(&jffs2_lock);
-
-    if (oflag & O_APPEND)
-    {
-        file->pos = file->size;
-        jffs2_file->f_offset = file->size;
-    }
-
-    return 0;
-}
-
-static int dfs_jffs2_close(struct dfs_fd* file)
-{
-    int result;
-    cyg_file * jffs2_file;
-
-    RT_ASSERT(file->data != NULL);
-    jffs2_file = (cyg_file *)(file->data);
-
-    if (file->flags & O_DIRECTORY) /* operations about dir */
-    {
-        rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-        result = jffs2_dir_colse(jffs2_file);
-        rt_mutex_release(&jffs2_lock);
-        if (result)
-            return jffs2_result_to_dfs(result);
-
-        rt_free(jffs2_file);
-        return 0;
-    }
-    /* regular file operations */
-    rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-    result = jffs2_file_colse(jffs2_file);
-    rt_mutex_release(&jffs2_lock);
-    if (result)
-        return jffs2_result_to_dfs(result);
-
-    /* release memory */
-    rt_free(jffs2_file);
-    return 0;
-}
-
-static int dfs_jffs2_ioctl(struct dfs_fd* file, int cmd, void* args)
-{
-    return -ENOSYS;
-}
-
-static int dfs_jffs2_read(struct dfs_fd* file, void* buf, size_t len)
-{
-    cyg_file * jffs2_file;
-    struct CYG_UIO_TAG uio_s;
-    struct CYG_IOVEC_TAG iovec;
-    int char_read;
-    int result;
-
-    RT_ASSERT(file->data != NULL);
-    jffs2_file = (cyg_file *)(file->data);
-    uio_s.uio_iov = &iovec;
-    uio_s.uio_iov->iov_base = buf;
-    uio_s.uio_iov->iov_len = len;
-    uio_s.uio_iovcnt = 1; //must be 1
-    //uio_s.uio_offset //not used...
-    uio_s.uio_resid = uio_s.uio_iov->iov_len; //seem no use in jffs2;
-
-    char_read = jffs2_file->f_offset; /* the current offset */
-    rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-    result = jffs2_file_read(jffs2_file, &uio_s);
-    rt_mutex_release(&jffs2_lock);
-    if (result)
-        return jffs2_result_to_dfs(result);
-
-    /* update position */
-    file->pos = jffs2_file->f_offset;
-    char_read = jffs2_file->f_offset - char_read;
-    return char_read;
-}
-
-static int dfs_jffs2_write(struct dfs_fd* file,
-                    const void* buf,
-                    size_t len)
-{
-    cyg_file * jffs2_file;
-    struct CYG_UIO_TAG uio_s;
-    struct CYG_IOVEC_TAG iovec;
-    int char_write;
-    int result;
-
-    RT_ASSERT(file->data != NULL);
-    jffs2_file = (cyg_file *)(file->data);
-    uio_s.uio_iov = &iovec;
-    uio_s.uio_iov->iov_base = (void *)buf;
-    uio_s.uio_iov->iov_len = len;
-    uio_s.uio_iovcnt = 1; //must be 1
-    //uio_s.uio_offset //not used...
-    uio_s.uio_resid = uio_s.uio_iov->iov_len; //seem no use in jffs2;
-
-    char_write = jffs2_file->f_offset;
-    rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-    result = jffs2_file_write(jffs2_file, &uio_s);
-    rt_mutex_release(&jffs2_lock);
-    if (result)
-        return jffs2_result_to_dfs(result);
-
-    /* update position */
-    file->pos = jffs2_file->f_offset;
-    char_write = jffs2_file->f_offset - char_write;
-    return char_write;
-}
-
-static int dfs_jffs2_flush(struct dfs_fd* file)
-{
-    /* infact, jffs2 not support, jffs2_fo_sync just return ok */
-    return -ENOSYS;
-}
-
-/* fixme warning: the offset is rt_off_t, so maybe the size of a file is must <= 2G*/
-static int dfs_jffs2_lseek(struct dfs_fd* file,
-                    rt_off_t offset)
-{
-    cyg_file * jffs2_file;
-    int result;
-
-    RT_ASSERT(file->data != NULL);
-    jffs2_file = (cyg_file *)(file->data);
-
-    /* set offset as current offset */
-    rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-    result = jffs2_file_lseek(jffs2_file, &offset, SEEK_SET);
-    rt_mutex_release(&jffs2_lock);
-    if (result)
-        return jffs2_result_to_dfs(result);
-    /* update file position */
-    file->pos = offset;
-    return offset;
-}
-
-/* return the size of  struct dirent*/
-static int dfs_jffs2_getdents(struct dfs_fd* file,
-                       struct dirent* dirp,
-                       rt_uint32_t count)
-{
-    cyg_file * jffs2_file;
-    struct CYG_UIO_TAG uio_s;
-    struct CYG_IOVEC_TAG iovec;
-    struct jffs2_dirent jffs2_d;
-    struct dirent * d;
-    rt_uint32_t index;
-#if !defined (CYGPKG_FS_JFFS2_RET_DIRENT_DTYPE)
-    struct jffs2_stat s;
-    cyg_mtab_entry * mte;
-    char * fullname;
-#endif
-    int result;
-
-    RT_ASSERT(file->data != RT_NULL);
-    jffs2_file = (cyg_file*)(file->data);
-    mte = jffs2_file->f_mte;
-
-    //set jffs2_d
-    memset(&jffs2_d, 0, sizeof(struct jffs2_dirent));
-    //set CYG_UIO_TAG uio_s
-    uio_s.uio_iov = &iovec;
-    uio_s.uio_iov->iov_base = &jffs2_d;
-    uio_s.uio_iov->iov_len = sizeof(struct jffs2_dirent);;
-    uio_s.uio_iovcnt = 1; //must be 1
-    uio_s.uio_offset = 0;//not used...
-    uio_s.uio_resid = uio_s.uio_iov->iov_len; //seem no use in jffs2;
-
-    /* make integer count, usually count is 1 */
-    count = (count / sizeof(struct dirent)) * sizeof(struct dirent);
-    if (count == 0) return -EINVAL;
-
-    index = 0;
-    /* usually, the while loop should only be looped only once! */
-    while (1)
-    {
-        d = dirp + index;
-        rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-        result = jffs2_dir_read(jffs2_file, &uio_s);
-        rt_mutex_release(&jffs2_lock);
-        /* if met a error or all entry are read over, break while*/
-        if (result || jffs2_d.d_name[0] == 0)
-            break;
-
-#if defined (CYGPKG_FS_JFFS2_RET_DIRENT_DTYPE)
-        switch(jffs2_d.d_type & JFFS2_S_IFMT)
-        {
-        case JFFS2_S_IFREG: d->d_type = DT_REG; break;
-        case JFFS2_S_IFDIR: d->d_type = DT_DIR; break;
-        default: d->d_type = DT_UNKNOWN; break;
-        }
-#else
-        fullname = rt_malloc(FILE_PATH_MAX);
-        if(fullname == RT_NULL)
-                return -ENOMEM;
-
-        /* make a right entry */
-        if ((file->path[0] == '/') )
-        {
-            if (file->path[1] == 0)
-                strcpy(fullname, jffs2_d.d_name);
-            else
-                rt_sprintf(fullname, "%s/%s", file->path+1, jffs2_d.d_name);
-        }
-        else
-            rt_sprintf(fullname, "%s/%s", file->path, jffs2_d.d_name);
-        rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-        result = jffs2_porting_stat(mte, mte->root, fullname, (void *)&s);
-        rt_mutex_release(&jffs2_lock);
-        if (result)
-            return jffs2_result_to_dfs(result);
-
-        rt_free(fullname);
-        /* convert to dfs stat structure */
-        switch(s.st_mode & JFFS2_S_IFMT)
-        {
-        case JFFS2_S_IFREG: d->d_type = DT_REG; break;
-        case JFFS2_S_IFDIR: d->d_type = DT_DIR; break;
-        default: d->d_type = DT_UNKNOWN; break;
-        }
-#endif
-        /* write the rest fields of struct dirent* dirp  */
-        d->d_namlen = rt_strlen(jffs2_d.d_name);
-        d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
-        rt_strncpy(d->d_name, jffs2_d.d_name, d->d_namlen + 1);
-
-        index ++;
-        if (index * sizeof(struct dirent) >= count)
-            break;
-    }
-    if (result)
-        return jffs2_result_to_dfs(result);
-    return index * sizeof(struct dirent);
-}
-
-static int dfs_jffs2_unlink(struct dfs_filesystem* fs, const char* path)
-{
-    int result;
-    struct jffs2_stat s;
-    cyg_mtab_entry * mte;
-
-    result = _find_fs(&mte, fs->dev_id);
-    if (result)
-        return -ENOENT;
-
-    /* deal path */
-    if (path[0] == '/')
-        path++;
-
-    /* judge file type, dir is to be delete by rmdir, others by unlink */
-    rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-    result = jffs2_porting_stat(mte, mte->root, path, (void *)&s);
-    if (result)
-    {
-        rt_mutex_release(&jffs2_lock);
-        return jffs2_result_to_dfs(result);
-    }
-
-    switch(s.st_mode & JFFS2_S_IFMT)
-    {
-    case JFFS2_S_IFREG:
-        result = jffs2_file_unlink(mte, mte->root, path);
-        break;
-    case JFFS2_S_IFDIR:
-        result = jffs2_rmdir(mte, mte->root, path);
-        break;
-    default:
-        /* unknown file type */
-        rt_mutex_release(&jffs2_lock);
-        return -1;
-    }
-    rt_mutex_release(&jffs2_lock);
-    if (result)
-        return jffs2_result_to_dfs(result);
-    return 0;
-}
-
-static int dfs_jffs2_rename(struct dfs_filesystem* fs,
-                     const char* oldpath,
-                     const char* newpath)
-{
-    int result;
-    cyg_mtab_entry * mte;
-
-    result = _find_fs(&mte, fs->dev_id);
-    if (result)
-        return -ENOENT;
-
-    if (*oldpath == '/')
-        oldpath += 1;
-    if (*newpath == '/')
-        newpath += 1;
-    rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-    result = jffs2_rename(mte, mte->root, oldpath, mte->root, newpath);
-    rt_mutex_release(&jffs2_lock);
-    if (result)
-        return jffs2_result_to_dfs(result);
-    return 0;
-}
-
-static int dfs_jffs2_stat(struct dfs_filesystem* fs, const char *path, struct stat *st)
-{
-    int result;
-    struct jffs2_stat s;
-    cyg_mtab_entry * mte;
-
-    /* deal the path for jffs2 */
-    RT_ASSERT(!((path[0] == '/') && (path[1] == 0)));
-
-    if (path[0] == '/')
-        path++;
-
-    result = _find_fs(&mte, fs->dev_id);
-    if (result)
-        return -ENOENT;
-
-    rt_mutex_take(&jffs2_lock, RT_WAITING_FOREVER);
-    result = jffs2_porting_stat(mte, mte->root, path, (void *)&s);
-    rt_mutex_release(&jffs2_lock);
-
-    if (result)
-        return jffs2_result_to_dfs(result);
-    /* convert to dfs stat structure */
-    switch(s.st_mode & JFFS2_S_IFMT)
-    {
-    case JFFS2_S_IFREG:
-        st->st_mode = S_IFREG | S_IRUSR | S_IRGRP | S_IROTH |
-            S_IWUSR | S_IWGRP | S_IWOTH;
-        break;
-
-    case JFFS2_S_IFDIR:
-        st->st_mode = S_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH;
-        break;
-
-    default:
-        st->st_mode = DT_UNKNOWN; //fixme
-        break;
-    }
-
-    st->st_dev  = 0;
-    st->st_size = s.st_size;
-    st->st_mtime = s.st_mtime;
-
-    return 0;
-}
-
-static const struct dfs_file_ops _jffs2_fops =
-{
-    dfs_jffs2_open,
-    dfs_jffs2_close,
-    dfs_jffs2_ioctl,
-    dfs_jffs2_read,
-    dfs_jffs2_write,
-    dfs_jffs2_flush,
-    dfs_jffs2_lseek,
-    dfs_jffs2_getdents,
-};
-
-static const struct dfs_filesystem_ops _jffs2_ops =
-{
-    "jffs2",
-    DFS_FS_FLAG_DEFAULT,
-    &_jffs2_fops,
-
-    dfs_jffs2_mount,
-    dfs_jffs2_unmount,
-    dfs_jffs2_mkfs,
-    dfs_jffs2_statfs,
-
-    dfs_jffs2_unlink,
-    dfs_jffs2_stat,
-    dfs_jffs2_rename,
-};
-
-int dfs_jffs2_init(void)
-{
-    /* register fatfs file system */
-    dfs_register(&_jffs2_ops);
-
-    /* initialize mutex */
-    if (rt_mutex_init(&jffs2_lock, "jffs2lock", RT_IPC_FLAG_FIFO) != RT_EOK)
-    {
-        rt_kprintf("init jffs2 lock mutex failed\n");
-    }
-    rt_kprintf("init jffs2 lock mutex okay\n");
-    return 0;
-}
-INIT_COMPONENT_EXPORT(dfs_jffs2_init);