341 lines
6.9 KiB
C
341 lines
6.9 KiB
C
/*
|
|
Copyright (C) by Ronnie Sahlberg <ronniesahlberg@gmail.com> 2013
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/* A FUSE filesystem based on libnfs. */
|
|
|
|
#define FUSE_USE_VERSION 26
|
|
#define _FILE_OFFSET_BITS 64
|
|
|
|
#include <fuse.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <getopt.h>
|
|
|
|
#include <nfsc/libnfs.h>
|
|
|
|
#define discard_const(ptr) ((void *)((intptr_t)(ptr)))
|
|
|
|
struct nfs_context *nfs = NULL;
|
|
|
|
static int fuse_nfs_getattr(const char *path, struct stat *stbuf)
|
|
{
|
|
int ret = 0;
|
|
struct nfs_stat_64 nfs_st;
|
|
|
|
ret = nfs_stat64(nfs, path, &nfs_st);
|
|
|
|
stbuf->st_dev = nfs_st.nfs_dev;
|
|
stbuf->st_ino = nfs_st.nfs_ino;
|
|
stbuf->st_mode = nfs_st.nfs_mode;
|
|
stbuf->st_nlink = nfs_st.nfs_nlink;
|
|
stbuf->st_uid = nfs_st.nfs_uid;
|
|
stbuf->st_gid = nfs_st.nfs_gid;
|
|
stbuf->st_rdev = nfs_st.nfs_rdev;
|
|
stbuf->st_size = nfs_st.nfs_size;
|
|
stbuf->st_blksize = nfs_st.nfs_blksize;
|
|
stbuf->st_blocks = nfs_st.nfs_blocks;
|
|
stbuf->st_atim.tv_sec = nfs_st.nfs_atime;
|
|
stbuf->st_atim.tv_usec = nfs_st.nfs_atime_nsec / 1000;
|
|
stbuf->st_mtim.tv_sec = nfs_st.nfs_mtime;
|
|
stbuf->st_mtim.tv_usec = nfs_st.nfs_mtime_nsec / 1000;
|
|
stbuf->st_ctim.tv_sec = nfs_st.nfs_ctime;
|
|
stbuf->st_ctim.tv_usec = nfs_st.nfs_ctime_nsec / 1000;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuse_nfs_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
|
|
off_t offset, struct fuse_file_info *fi)
|
|
{
|
|
struct nfsdir *nfsdir;
|
|
struct nfsdirent *nfsdirent;
|
|
|
|
int ret = 0;
|
|
|
|
ret = nfs_opendir(nfs, path, &nfsdir);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
while ((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
|
|
filler(buf, nfsdirent->name, NULL, 0);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuse_nfs_open(const char *path, struct fuse_file_info *fi)
|
|
{
|
|
int ret = 0;
|
|
struct nfsfh *nfsfh;
|
|
|
|
fi->fh = 0;
|
|
ret = nfs_open(nfs, path, fi->flags, &nfsfh);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
|
|
fi->fh = (uint64_t)nfsfh;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuse_nfs_release(const char *path, struct fuse_file_info *fi)
|
|
{
|
|
struct nfsfh *nfsfh = (struct nfsfh *)fi->fh;
|
|
|
|
nfs_close(nfs, nfsfh);
|
|
return 0;
|
|
}
|
|
|
|
static int fuse_nfs_read(const char *path, char *buf, size_t size,
|
|
off_t offset, struct fuse_file_info *fi)
|
|
{
|
|
int ret = 0;
|
|
struct nfsfh *nfsfh = (struct nfsfh *)fi->fh;
|
|
|
|
ret = nfs_pread(nfs, nfsfh, offset, size, buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuse_nfs_write(const char *path, const char *buf, size_t size,
|
|
off_t offset, struct fuse_file_info *fi)
|
|
{
|
|
int ret = 0;
|
|
struct nfsfh *nfsfh = (struct nfsfh *)fi->fh;
|
|
|
|
ret = nfs_pwrite(nfs, nfsfh, offset, size, discard_const(buf));
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuse_nfs_create(const char *path, mode_t mode, struct fuse_file_info *fi)
|
|
{
|
|
int ret = 0;
|
|
struct nfsfh *nfsfh;
|
|
|
|
ret = nfs_creat(nfs, path, mode, &nfsfh);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
|
|
fi->fh = (uint64_t)nfsfh;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuse_nfs_utime(const char *path, struct utimbuf *times)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = nfs_utime(nfs, path, times);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuse_nfs_unlink(const char *path)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = nfs_unlink(nfs, path);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuse_nfs_rmdir(const char *path)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = nfs_rmdir(nfs, path);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuse_nfs_mkdir(const char *path, mode_t mode)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = nfs_mkdir(nfs, path);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
ret = nfs_chmod(nfs, path, mode);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct fuse_operations nfs_oper = {
|
|
.create = fuse_nfs_create,
|
|
.getattr = fuse_nfs_getattr,
|
|
.mkdir = fuse_nfs_mkdir,
|
|
.open = fuse_nfs_open,
|
|
.read = fuse_nfs_read,
|
|
.readdir = fuse_nfs_readdir,
|
|
.release = fuse_nfs_release,
|
|
.rmdir = fuse_nfs_rmdir,
|
|
.unlink = fuse_nfs_unlink,
|
|
.utime = fuse_nfs_utime,
|
|
.write = fuse_nfs_write,
|
|
};
|
|
|
|
void print_usage(char *name)
|
|
{
|
|
printf("Usage: %s [-?|--help] [-n|--nfs-share=nfs-url] [-m|--mountpoint=mountpoint]\n",
|
|
name);
|
|
exit(0);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int ret = 0;
|
|
static struct option long_opts[] = {
|
|
{ "help", no_argument, 0, '?' },
|
|
{ "nfs-share", required_argument, 0, 'n' },
|
|
{ "mountpoint", required_argument, 0, 'm' },
|
|
{ NULL, 0, 0, 0 }
|
|
};
|
|
int c;
|
|
int opt_idx = 0;
|
|
char *url = NULL;
|
|
char *mnt = NULL;
|
|
char *server = NULL, *export = NULL, *strp;
|
|
int fuse_nfs_argc = 6;
|
|
char *fuse_nfs_argv[16] = {
|
|
"fuse-nfs",
|
|
"<export>",
|
|
"-oallow_other",
|
|
"-odefault_permissions",
|
|
"-omax_write=32768",
|
|
"-s",
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
};
|
|
|
|
while ((c = getopt_long(argc, argv, "?hm:n:", long_opts,
|
|
&opt_idx)) > 0) {
|
|
switch (c) {
|
|
case 'h':
|
|
case '?':
|
|
print_usage(argv[0]);
|
|
return 0;
|
|
case 'm':
|
|
mnt = strdup(optarg);
|
|
break;
|
|
case 'n':
|
|
url = strdup(optarg);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (url == NULL) {
|
|
fprintf(stderr, "-n was not specified.\n");
|
|
print_usage(argv[0]);
|
|
ret = 10;
|
|
goto finished;
|
|
}
|
|
if (mnt == NULL) {
|
|
fprintf(stderr, "-m was not specified.\n");
|
|
print_usage(argv[0]);
|
|
ret = 10;
|
|
goto finished;
|
|
}
|
|
|
|
|
|
if (strncmp(url, "nfs://", 6)) {
|
|
fprintf(stderr, "Invalid URL specified.\n");
|
|
ret = 10;
|
|
goto finished;
|
|
}
|
|
server = strdup(url + 6);
|
|
if (server == NULL) {
|
|
fprintf(stderr, "Failed to strdup server string\n");
|
|
ret = 10;
|
|
goto finished;
|
|
}
|
|
if (server[0] == '/' || server[0] == '\0') {
|
|
fprintf(stderr, "Invalid server string.\n");
|
|
ret = 10;
|
|
goto finished;
|
|
}
|
|
strp = strchr(server, '/');
|
|
if (strp == NULL) {
|
|
fprintf(stderr, "Invalid URL specified.\n");
|
|
ret = 10;
|
|
goto finished;
|
|
}
|
|
export = strdup(strp);
|
|
if (export == NULL) {
|
|
fprintf(stderr, "Failed to strdup server string\n");
|
|
ret = 10;
|
|
goto finished;
|
|
}
|
|
if (export[0] != '/') {
|
|
fprintf(stderr, "Invalid export.\n");
|
|
ret = 10;
|
|
goto finished;
|
|
}
|
|
*strp = 0;
|
|
|
|
nfs = nfs_init_context();
|
|
if (nfs == NULL) {
|
|
printf("failed to init context\n");
|
|
goto finished;
|
|
}
|
|
|
|
ret = nfs_mount(nfs, server, export);
|
|
if (ret != 0) {
|
|
printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
|
|
goto finished;
|
|
}
|
|
|
|
|
|
fuse_nfs_argv[1] = mnt;
|
|
return fuse_main(fuse_nfs_argc, fuse_nfs_argv, &nfs_oper, NULL);
|
|
|
|
finished:
|
|
if (nfs != NULL) {
|
|
nfs_destroy_context(nfs);
|
|
}
|
|
free(server);
|
|
free(export);
|
|
free(url);
|
|
free(mnt);
|
|
return ret;
|
|
}
|