rtt-f030/components/dfs/filesystems/nfs/dfs_nfs.c

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/*
* File : dfs_nfs.c
* This file is part of Device File System in RT-Thread RTOS
* COPYRIGHT (C) 2004-2011, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE.
*
* Change Logs:
* Date Author Notes
*/
#include <stdio.h>
#include <rtthread.h>
#include <dfs_fs.h>
#include <dfs_def.h>
#include <rpc/rpc.h>
#include "mount.h"
#include "nfs.h"
#define NAME_MAX 64
struct nfs_file
{
nfs_fh3 handle; /* handle */
size_t offset; /* current offset */
size_t size; /* total size */
bool_t eof; /* end of file */
};
struct nfs_dir
{
nfs_fh3 handle;
cookie3 cookie;
cookieverf3 cookieverf;
entry3 *entry;
bool_t eof;
READDIR3res res;
};
#define HOST_LENGTH 32
#define EXPORT_PATH_LENGTH 32
struct nfs_filesystem
{
nfs_fh3 root_handle;
nfs_fh3 current_handle;
CLIENT *nfs_client;
CLIENT *mount_client;
char host[HOST_LENGTH];
char export[EXPORT_PATH_LENGTH];
};
typedef struct nfs_file nfs_file;
typedef struct nfs_dir nfs_dir;
nfs_dir *nfs_opendir(struct nfs_filesystem *nfs, const char *path);
static int nfs_parse_host_export(const char *host_export,
char *host, size_t host_len,
char *export, size_t export_len)
{
int index;
for (index = 0; index < host_len; index ++)
{
/* it's end of string, failed */
if (host_export[index] == 0)
return -1;
/* copy to host buffer */
if (host_export[index] != ':')
host[index] = host_export[index];
else
break;
}
/* host buffer is not enough, failed */
if (index == host_len)
return -1;
/* make RT_NULL */
host_len = index;
host[host_len] = '\0';
host_len ++;
/* copy export path */
for (index = host_len; index < host_len + export_len; index ++)
{
if (host_export[index] == 0)
{
export[index - host_len] = '\0';
return 0;
}
export[index - host_len] = host_export[index];
}
return -1;
}
static void copy_handle(nfs_fh3 *dest, const nfs_fh3 *source)
{
dest->data.data_len = source->data.data_len;
dest->data.data_val = rt_malloc(dest->data.data_len);
if (dest->data.data_val == RT_NULL)
{
dest->data.data_len = 0;
return;
}
memcpy(dest->data.data_val, source->data.data_val, dest->data.data_len);
}
static nfs_fh3 *get_handle(struct nfs_filesystem *nfs, const char *name)
{
nfs_fh3 *handle = RT_NULL;
char *file;
char *path;
char *init;
init = path = rt_malloc(strlen(name)+1);
if (init == RT_NULL)
return RT_NULL;
memcpy(init, name, strlen(name)+1);
handle = rt_malloc(sizeof(nfs_fh3));
if (handle == RT_NULL)
{
rt_free(init);
return RT_NULL;
}
if (path[0] == '/')
{
path ++;
copy_handle(handle, &nfs->root_handle);
}
else
{
copy_handle(handle, &nfs->current_handle);
}
while ((file = strtok_r(RT_NULL, "/", &path)) != RT_NULL)
{
LOOKUP3args args;
LOOKUP3res res;
memset(&res, 0, sizeof(res));
copy_handle(&args.what.dir, handle);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
args.what.name = file;
if (nfsproc3_lookup_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Lookup failed\n");
rt_free(init);
rt_free(handle);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
return RT_NULL;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Lookup failed: %d\n", res.status);
rt_free(init);
rt_free(handle);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
return RT_NULL;
}
copy_handle(handle, &res.LOOKUP3res_u.resok.object);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
}
rt_free(init);
return handle;
}
static nfs_fh3 *get_dir_handle(struct nfs_filesystem *nfs, const char *name)
{
nfs_fh3 *handle = RT_NULL;
char *file;
char *path;
char *init;
init = path = rt_malloc(strlen(name)+1);
if (init == RT_NULL)
return RT_NULL;
memcpy(init, name, strlen(name)+1);
handle = rt_malloc(sizeof(nfs_fh3));
if (handle == RT_NULL)
{
rt_free(init);
return RT_NULL;
}
if (path[0] == '/')
{
path ++;
copy_handle(handle, &nfs->root_handle);
}
else
{
copy_handle(handle, &nfs->current_handle);
}
while ((file = strtok_r(RT_NULL, "/", &path)) != RT_NULL && path[0] != '\0')
{
LOOKUP3args args;
LOOKUP3res res;
memset(&res, 0, sizeof(res));
copy_handle(&args.what.dir, handle);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
args.what.name = file;
if (nfsproc3_lookup_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Lookup failed\n");
rt_free(init);
rt_free(handle);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
return RT_NULL;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Lookup failed: %d\n", res.status);
rt_free(init);
rt_free(handle);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
return RT_NULL;
}
copy_handle(handle, &res.LOOKUP3res_u.resok.object);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
}
rt_free(init);
return handle;
}
static size_t nfs_get_filesize(struct nfs_filesystem *nfs, nfs_fh3 *handle)
{
GETATTR3args args;
GETATTR3res res;
fattr3 *info;
size_t size;
args.object = *handle;
memset(&res, '\0', sizeof(res));
if ((nfsproc3_getattr_3(args, &res, nfs->nfs_client)!=RPC_SUCCESS) ||
res.status != NFS3_OK)
{
rt_kprintf("GetAttr failed: %d\n", res.status);
return 0;
}
info = &res.GETATTR3res_u.resok.obj_attributes;
size = info->size;
xdr_free((xdrproc_t)xdr_GETATTR3res, (char *)&res);
return size;
}
rt_bool_t nfs_is_directory(struct nfs_filesystem *nfs, const char *name)
{
GETATTR3args args;
GETATTR3res res;
fattr3 *info;
nfs_fh3 *handle;
rt_bool_t result;
result = RT_FALSE;
handle = get_handle(nfs, name);
if (handle == RT_NULL)
return RT_FALSE;
args.object = *handle;
memset(&res, '\0', sizeof(res));
if (nfsproc3_getattr_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("GetAttr failed\n");
return RT_FALSE;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Getattr failed: %d\n", res.status);
return RT_FALSE;
}
info=&res.GETATTR3res_u.resok.obj_attributes;
if (info->type == NFS3DIR)
result = RT_TRUE;
xdr_free((xdrproc_t)xdr_GETATTR3res, (char *)&res);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
rt_free(handle);
return result;
}
int nfs_create(struct nfs_filesystem *nfs, const char *name, mode_t mode)
{
CREATE3args args;
CREATE3res res;
int ret = 0;
nfs_fh3 *handle;
if (nfs->nfs_client == RT_NULL)
{
return -1;
}
handle = get_dir_handle(nfs, name);
if (handle == RT_NULL)
{
return -1;
}
args.where.dir = *handle;
args.where.name = strrchr(name, '/') + 1;
if (args.where.name == RT_NULL)
{
args.where.name = (char *)name;
}
args.how.mode = GUARDED;
args.how.createhow3_u.obj_attributes.mode.set_it = TRUE;
args.how.createhow3_u.obj_attributes.mode.set_mode3_u.mode = mode;
args.how.createhow3_u.obj_attributes.uid.set_it = FALSE;
args.how.createhow3_u.obj_attributes.gid.set_it = FALSE;
args.how.createhow3_u.obj_attributes.size.set_it = FALSE;
args.how.createhow3_u.obj_attributes.atime.set_it = DONT_CHANGE;
args.how.createhow3_u.obj_attributes.mtime.set_it = DONT_CHANGE;
memset(&res, 0, sizeof(res));
if (nfsproc3_create_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Create failed\n");
ret = -1;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Create failed: %d\n", res.status);
ret = -1;
}
xdr_free((xdrproc_t)xdr_CREATE3res, (char *)&res);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
rt_free(handle);
return ret;
}
int nfs_mkdir(struct nfs_filesystem *nfs, const char *name, mode_t mode)
{
MKDIR3args args;
MKDIR3res res;
int ret = 0;
nfs_fh3 *handle;
if (nfs->nfs_client == RT_NULL)
return -1;
handle = get_dir_handle(nfs, name);
if (handle == RT_NULL)
return -1;
args.where.dir = *handle;
args.where.name = strrchr(name, '/') + 1;
if (args.where.name == RT_NULL)
{
args.where.name = (char *)name;
}
args.attributes.mode.set_it = TRUE;
args.attributes.mode.set_mode3_u.mode = mode;
args.attributes.uid.set_it = FALSE;
args.attributes.gid.set_it = FALSE;
args.attributes.size.set_it = FALSE;
args.attributes.atime.set_it = DONT_CHANGE;
args.attributes.mtime.set_it = DONT_CHANGE;
memset(&res, 0, sizeof(res));
if (nfsproc3_mkdir_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Mkdir failed\n");
ret = -1;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Mkdir failed: %d\n", res.status);
ret = -1;
}
xdr_free((xdrproc_t)xdr_MKDIR3res, (char *)&res);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
rt_free(handle);
return ret;
}
/* mount(RT_NULL, "/mnt", "nfs", 0, "192.168.1.1:/export") */
int nfs_mount(struct dfs_filesystem *fs, unsigned long rwflag, const void *data)
{
mountres3 res;
struct nfs_filesystem *nfs;
nfs = (struct nfs_filesystem *)rt_malloc(sizeof(struct nfs_filesystem));
memset(nfs, 0, sizeof(struct nfs_filesystem));
if (nfs_parse_host_export((const char *)data, nfs->host, HOST_LENGTH,
nfs->export, EXPORT_PATH_LENGTH) < 0)
{
rt_kprintf("host or export path error\n");
goto __return;
}
nfs->mount_client=clnt_create((char *)nfs->host, MOUNT_PROGRAM, MOUNT_V3, "udp");
if (nfs->mount_client == RT_NULL)
{
rt_kprintf("create mount client failed\n");
goto __return;
}
memset(&res, '\0', sizeof(mountres3));
if (mountproc3_mnt_3((char *)nfs->export, &res, nfs->mount_client) != RPC_SUCCESS)
{
rt_kprintf("nfs mount failed\n");
goto __return;
}
else if (res.fhs_status != MNT3_OK)
{
rt_kprintf("nfs mount failed\n");
goto __return;
}
nfs->nfs_client=clnt_create((char *)nfs->host, NFS_PROGRAM, NFS_V3, "udp");
if (nfs->nfs_client == RT_NULL)
{
rt_kprintf("creat nfs client failed\n");
goto __return;
}
copy_handle(&nfs->root_handle, (nfs_fh3 *)&res.mountres3_u.mountinfo.fhandle);
copy_handle(&nfs->current_handle, &nfs->root_handle);
nfs->nfs_client->cl_auth = authnone_create();
fs->data = nfs;
return 0;
__return:
if (nfs != RT_NULL)
{
if (nfs->mount_client != RT_NULL)
{
clnt_destroy(nfs->mount_client);
}
if (nfs->nfs_client != RT_NULL)
{
if (nfs->nfs_client->cl_auth != RT_NULL)
{
auth_destroy(nfs->nfs_client->cl_auth);
}
clnt_destroy(nfs->nfs_client);
}
rt_free(nfs);
}
return -1;
}
int nfs_unmount(struct dfs_filesystem *fs)
{
struct nfs_filesystem *nfs;
RT_ASSERT(fs != RT_NULL);
RT_ASSERT(fs->data != RT_NULL);
nfs = (struct nfs_filesystem *)fs->data;
if (nfs->mount_client != RT_NULL &&
mountproc3_umnt_3((char *)nfs->export, RT_NULL, nfs->mount_client) != RPC_SUCCESS)
{
rt_kprintf("umount failed\n");
return -1;
}
/* destroy nfs client */
if (nfs->nfs_client != RT_NULL)
{
if (nfs->nfs_client->cl_auth != RT_NULL)
{
auth_destroy(nfs->nfs_client->cl_auth);
nfs->nfs_client->cl_auth = RT_NULL;
}
clnt_destroy(nfs->nfs_client);
nfs->nfs_client = RT_NULL;
}
/* destroy mount client */
if (nfs->mount_client != RT_NULL)
{
if (nfs->mount_client->cl_auth != RT_NULL)
{
auth_destroy(nfs->mount_client->cl_auth);
nfs->mount_client->cl_auth = RT_NULL;
}
clnt_destroy(nfs->mount_client);
nfs->mount_client = RT_NULL;
}
rt_free(nfs);
fs->data = RT_NULL;
return 0;
}
int nfs_ioctl(struct dfs_fd *file, int cmd, void *args)
{
return -DFS_STATUS_ENOSYS;
}
int nfs_read(struct dfs_fd *file, void *buf, rt_size_t count)
{
READ3args args;
READ3res res;
ssize_t bytes;
nfs_file *fd;
struct nfs_filesystem *nfs;
if (file->type == FT_DIRECTORY)
return -DFS_STATUS_EISDIR;
fd = (nfs_file *)(file->data);
RT_ASSERT(fd != RT_NULL);
RT_ASSERT(file->fs != RT_NULL);
RT_ASSERT(file->fs->data != RT_NULL);
nfs = (struct nfs_filesystem *)file->fs->data;
if (nfs->nfs_client == RT_NULL)
return -1;
/* end of file */
if (fd->eof == TRUE)
return 0;
args.file = fd->handle;
args.offset = fd->offset;
args.count = count;
memset(&res, 0, sizeof(res));
if (nfsproc3_read_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Read failed\n");
bytes = 0;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Read failed: %d\n", res.status);
bytes = 0;
}
else
{
if (res.READ3res_u.resok.eof)
{
/* something should probably be here */
fd->eof = TRUE;
}
bytes = res.READ3res_u.resok.count;
fd->offset += bytes;
/* update current position */
file->pos = fd->offset;
memcpy(buf, res.READ3res_u.resok.data.data_val, bytes);
}
xdr_free((xdrproc_t)xdr_READ3res, (char *)&res);
return bytes;
}
int nfs_write(struct dfs_fd *file, const void *buf, rt_size_t count)
{
WRITE3args args;
WRITE3res res;
ssize_t bytes;
nfs_file *fd;
struct nfs_filesystem *nfs;
if (file->type == FT_DIRECTORY)
return -DFS_STATUS_EISDIR;
fd = (nfs_file *)(file->data);
RT_ASSERT(fd != RT_NULL);
RT_ASSERT(file->fs != RT_NULL);
RT_ASSERT(file->fs->data != RT_NULL);
nfs = (struct nfs_filesystem *)file->fs->data;
if (nfs->nfs_client == RT_NULL)
return -1;
args.file = fd->handle;
args.stable = FILE_SYNC;
args.offset = fd->offset;
memset(&res, 0, sizeof(res));
args.data.data_val=(void *)buf;
args.count=args.data.data_len = count;
if (nfsproc3_write_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Write failed\n");
bytes = 0;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Write failed: %d\n", res.status);
bytes = 0;
}
else
{
bytes = res.WRITE3res_u.resok.count;
fd->offset += bytes;
/* update current position */
file->pos = fd->offset;
/* todo: update file size */
}
xdr_free((xdrproc_t)xdr_WRITE3res, (char *)&res);
return bytes;
}
int nfs_lseek(struct dfs_fd *file, rt_off_t offset)
{
nfs_file *fd;
if (file->type == FT_DIRECTORY)
return -DFS_STATUS_EISDIR;
fd = (nfs_file *)(file->data);
RT_ASSERT(fd != RT_NULL);
if (offset < fd->size)
{
fd->offset = offset;
return offset;
}
return -DFS_STATUS_EIO;
}
int nfs_close(struct dfs_fd *file)
{
if (file->type == FT_DIRECTORY)
{
struct nfs_dir *dir;
dir = (struct nfs_dir *)file->data;
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&dir->handle);
xdr_free((xdrproc_t)xdr_READDIR3res, (char *)&dir->res);
rt_free(dir);
}
else if (file->type == FT_REGULAR)
{
struct nfs_file *fd;
fd = (struct nfs_file *)file->data;
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&fd->handle);
rt_free(fd);
}
file->data = RT_NULL;
return 0;
}
int nfs_open(struct dfs_fd *file)
{
struct nfs_filesystem *nfs;
RT_ASSERT(file->fs != RT_NULL);
RT_ASSERT(file->fs->data != RT_NULL);
nfs = (struct nfs_filesystem *)file->fs->data;
if (file->flags & DFS_O_DIRECTORY)
{
nfs_dir *dir;
if (file->flags & DFS_O_CREAT)
{
if (nfs_mkdir(nfs, file->path, 555) < 0)
return -1;
}
/* open directory */
dir = nfs_opendir(nfs, file->path);
file->data = dir;
}
else
{
nfs_file *fp;
nfs_fh3 *handle;
/* create file */
if (file->flags & DFS_O_CREAT)
{
if (nfs_create(nfs, file->path, 555) < 0) return -1;
}
/* open file (get file handle ) */
fp = rt_malloc(sizeof(nfs_file));
if (fp == RT_NULL)
return -1;
handle = get_handle(nfs, file->path);
if (handle == RT_NULL)
{
rt_free(fp);
return -1;
}
/* get size of file */
fp->size = nfs_get_filesize(nfs, handle);
fp->offset = 0;
fp->eof = FALSE;
copy_handle(&fp->handle, handle);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
rt_free(handle);
if (file->flags & DFS_O_APPEND)
{
fp->offset = fp->size;
}
/* set private file */
file->data = fp;
}
return 0;
}
int nfs_stat(struct dfs_filesystem *fs, const char *path, struct stat *st)
{
GETATTR3args args;
GETATTR3res res;
fattr3 *info;
nfs_fh3 *handle;
struct nfs_filesystem *nfs;
RT_ASSERT(fs != RT_NULL);
RT_ASSERT(fs->data != RT_NULL);
nfs = (struct nfs_filesystem *)fs->data;
handle = get_handle(nfs, path);
if (handle == RT_NULL)
return -1;
args.object = *handle;
memset(&res, '\0', sizeof(res));
if (nfsproc3_getattr_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("GetAttr failed\n");
return -1;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Getattr failed: %d\n", res.status);
return -1;
}
info = &res.GETATTR3res_u.resok.obj_attributes;
st->st_dev = 0;
st->st_mode = DFS_S_IFREG | DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
if (info->type == NFS3DIR)
{
st->st_mode &= ~DFS_S_IFREG;
st->st_mode |= DFS_S_IFDIR | DFS_S_IXUSR | DFS_S_IXGRP | DFS_S_IXOTH;
}
st->st_size = info->size;
st->st_mtime = info->mtime.seconds;
st->st_blksize = 512;
xdr_free((xdrproc_t)xdr_GETATTR3res, (char *)&res);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
rt_free(handle);
return 0;
}
nfs_dir *nfs_opendir(struct nfs_filesystem *nfs, const char *path)
{
nfs_dir *dir;
nfs_fh3 *handle;
dir = rt_malloc(sizeof(nfs_dir));
if (dir == RT_NULL)
{
return RT_NULL;
}
handle = get_handle(nfs, path);
if (handle == RT_NULL)
{
rt_free(dir);
return RT_NULL;
}
copy_handle(&dir->handle, handle);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
rt_free(handle);
dir->cookie = 0;
memset(&dir->cookieverf, '\0', sizeof(cookieverf3));
dir->entry = RT_NULL;
dir->eof = FALSE;
memset(&dir->res, '\0', sizeof(dir->res));
return dir;
}
char *nfs_readdir(struct nfs_filesystem *nfs, nfs_dir *dir)
{
static char name[NAME_MAX];
if (nfs->nfs_client == RT_NULL || dir == RT_NULL)
return RT_NULL;
if (dir->entry == RT_NULL)
{
READDIR3args args;
xdr_free((xdrproc_t)xdr_READDIR3res, (char *)&dir->res);
memset(&dir->res, '\0', sizeof(dir->res));
args.dir = dir->handle;
args.cookie = dir->cookie;
memcpy(&args.cookieverf, &dir->cookieverf, sizeof(cookieverf3));
args.count = 1024;
if (nfsproc3_readdir_3(args, &dir->res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Readdir failed\n");
return RT_NULL;
}
else if (dir->res.status != NFS3_OK)
{
rt_kprintf("Readdir failed: %d\n", dir->res.status);
return RT_NULL;
}
memcpy(&dir->cookieverf, &dir->res.READDIR3res_u.resok.cookieverf, sizeof(cookieverf3));
dir->eof = dir->res.READDIR3res_u.resok.reply.eof;
dir->entry = dir->res.READDIR3res_u.resok.reply.entries;
}
if (dir->eof == TRUE && dir->entry == RT_NULL)
return RT_NULL;
dir->cookie = dir->entry->cookie;
strncpy(name, dir->entry->name, NAME_MAX-1);
dir->entry = dir->entry->nextentry;
name[NAME_MAX - 1] = '\0';
return name;
}
int nfs_unlink(struct dfs_filesystem *fs, const char *path)
{
int ret = 0;
struct nfs_filesystem *nfs;
RT_ASSERT(fs != RT_NULL);
RT_ASSERT(fs->data != RT_NULL);
nfs = (struct nfs_filesystem *)fs->data;
if (nfs_is_directory(nfs, path) == RT_FALSE)
{
/* remove file */
REMOVE3args args;
REMOVE3res res;
nfs_fh3 *handle;
handle = get_dir_handle(nfs, path);
if (handle == RT_NULL)
return -1;
args.object.dir = *handle;
args.object.name = strrchr(path, '/') + 1;
if (args.object.name == RT_NULL)
{
args.object.name = (char *)path;
}
memset(&res, 0, sizeof(res));
if (nfsproc3_remove_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Remove failed\n");
ret = -1;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Remove failed: %d\n", res.status);
ret = -1;
}
xdr_free((xdrproc_t)xdr_REMOVE3res, (char *)&res);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
rt_free(handle);
}
else
{
/* remove directory */
RMDIR3args args;
RMDIR3res res;
nfs_fh3 *handle;
handle = get_dir_handle(nfs, path);
if (handle == RT_NULL)
return -1;
args.object.dir = *handle;
args.object.name = strrchr(path, '/') + 1;
if (args.object.name == RT_NULL)
{
args.object.name = (char *)path;
}
memset(&res, 0, sizeof(res));
if (nfsproc3_rmdir_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Rmdir failed\n");
ret = -1;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Rmdir failed: %d\n", res.status);
ret = -1;
}
xdr_free((xdrproc_t)xdr_RMDIR3res, (char *)&res);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
rt_free(handle);
}
return ret;
}
int nfs_rename(struct dfs_filesystem *fs, const char *src, const char *dest)
{
RENAME3args args;
RENAME3res res;
nfs_fh3 *sHandle;
nfs_fh3 *dHandle;
int ret = 0;
struct nfs_filesystem *nfs;
RT_ASSERT(fs != RT_NULL);
RT_ASSERT(fs->data != RT_NULL);
nfs = (struct nfs_filesystem *)fs->data;
if (nfs->nfs_client == RT_NULL)
return -1;
sHandle = get_dir_handle(nfs, src);
if (sHandle == RT_NULL)
return -1;
dHandle = get_dir_handle(nfs, dest);
if (dHandle == RT_NULL)
return -1;
args.from.dir = *sHandle;
args.from.name = strrchr(src, '/') + 1;
if (args.from.name == RT_NULL)
args.from.name = (char *)src;
args.to.dir = *dHandle;
args.to.name = strrchr(src, '/') + 1;
if (args.to.name == RT_NULL)
args.to.name = (char *)dest;
memset(&res, '\0', sizeof(res));
if (nfsproc3_rename_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
{
rt_kprintf("Rename failed\n");
ret = -1;
}
else if (res.status != NFS3_OK)
{
rt_kprintf("Rename failed: %d\n", res.status);
ret = -1;
}
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)sHandle);
xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)dHandle);
xdr_free((xdrproc_t)xdr_RENAME3res, (char *)&res);
return ret;
}
int nfs_getdents(struct dfs_fd *file, struct dirent *dirp, rt_uint32_t count)
{
nfs_dir *dir;
rt_uint32_t index;
struct dirent *d;
struct nfs_filesystem *nfs;
char *name;
dir = (nfs_dir *)(file->data);
RT_ASSERT(dir != RT_NULL);
RT_ASSERT(file->fs != RT_NULL);
RT_ASSERT(file->fs->data != RT_NULL);
nfs = (struct nfs_filesystem *)file->fs->data;
/* make integer count */
count = (count / sizeof(struct dirent)) * sizeof(struct dirent);
if (count == 0)
return -DFS_STATUS_EINVAL;
index = 0;
while (1)
{
char *fn;
d = dirp + index;
name = nfs_readdir(nfs, dir);
if (name == RT_NULL)
break;
d->d_type = DFS_DT_REG;
d->d_namlen = rt_strlen(name);
d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
rt_strncpy(d->d_name, name, rt_strlen(name) + 1);
index ++;
if (index * sizeof(struct dirent) >= count)
break;
}
return index * sizeof(struct dirent);
}
static const struct dfs_filesystem_operation _nfs =
{
"nfs",
DFS_FS_FLAG_DEFAULT,
nfs_mount,
nfs_unmount,
RT_NULL, /* mkfs */
RT_NULL, /* statfs */
nfs_open,
nfs_close,
nfs_ioctl,
nfs_read,
nfs_write,
RT_NULL, /* flush */
nfs_lseek,
nfs_getdents,
nfs_unlink,
nfs_stat,
nfs_rename,
};
int nfs_init(void)
{
/* register fatfs file system */
dfs_register(&_nfs);
return RT_EOK;
}