static void workspace_nfs_open(fuse_req_t req, struct workspace_fh_struct *fh)
{
struct resource_struct *resource=fh->object->resource;
struct net_nfs_export_struct *nfs_export=(struct net_nfs_export_struct *) resource->data;
struct nfs_context *nfs_ctx=(struct nfs_context *) nfs_export->data;
char *path=fh->pathinfo.path + fh->relpath;
struct nfsfh *nfsfh=NULL;
int result=0;
if (strlen(path)==0) path=(char *) rootpath;
logoutput("workspace_nfs_open, path %s", path);
pthread_mutex_lock(&nfs_export->mutex);
result=nfs_open(nfs_ctx, path, fh->flags, &nfsfh);
pthread_mutex_unlock(&nfs_export->mutex);
if (result==0) {
fh->handle.data=(void *) nfsfh;
fuse_reply_open(req, fh->fi);
} else {
fuse_reply_err(req, abs(result));
}
free_path_pathinfo(&fh->pathinfo);
}
static struct file_context *
open_file(const char *url, int flags)
{
struct file_context *file_context;
file_context = malloc(sizeof(struct file_context));
if (file_context == NULL) {
fprintf(stderr, "Failed to malloc file_context\n");
return NULL;
}
file_context->fd = -1;
file_context->nfs = NULL;
file_context->nfsfh = NULL;
file_context->url = NULL;
file_context->nfs = nfs_init_context();
if (file_context->nfs == NULL) {
fprintf(stderr, "failed to init context\n");
free_file_context(file_context);
return NULL;
}
file_context->url = nfs_parse_url_full(file_context->nfs, url);
if (file_context->url == NULL) {
fprintf(stderr, "%s\n", nfs_get_error(file_context->nfs));
free_file_context(file_context);
return NULL;
}
if (nfs_mount(file_context->nfs, file_context->url->server,
file_context->url->path) != 0) {
fprintf(stderr, "Failed to mount nfs share : %s\n",
nfs_get_error(file_context->nfs));
free_file_context(file_context);
return NULL;
}
if (flags == O_RDONLY) {
if (nfs_open(file_context->nfs, file_context->url->file, flags,
&file_context->nfsfh) != 0) {
fprintf(stderr, "Failed to open file %s: %s\n",
file_context->url->file,
nfs_get_error(file_context->nfs));
free_file_context(file_context);
return NULL;
}
} else {
if (nfs_creat(file_context->nfs, file_context->url->file, 0660,
&file_context->nfsfh) != 0) {
fprintf(stderr, "Failed to creat file %s: %s\n",
file_context->url->file,
nfs_get_error(file_context->nfs));
free_file_context(file_context);
return NULL;
}
}
return file_context;
}
/*
* Open file
*/
static int
nfs_opendir(struct inode *inode, struct file *filp)
{
int res = 0;
lock_kernel();
/* Call generic open code in order to cache credentials */
if (!res)
res = nfs_open(inode, filp);
unlock_kernel();
return res;
}
File::File(Mount& mnt,
const fs::path& p,
yt::FDMode fdmode,
CreateIfNecessary create_if_necessary)
: ctx_(mnt.ctx_)
{
/* mode is not the same for both nfs_creat and nfs_open. For nfs_open
* mode has the same meaning as flags but for nfs_creat is the mode used
* for file creation. The newer version of libnfs makes this difference
* obvious by introducing a second field 'flags' along with mode. We should
* consider upgrading to the latest libnfs then and drop the workaround
* introduced below.
*/
const int mode = create_if_necessary == CreateIfNecessary::T ?
translate_create_mode(fdmode) : translate_mode(fdmode);
LOG_TRACE(mnt.share_name() << ", " << p << ", mode " << mode <<
", create: " << create_if_necessary);
nfsfh* fh;
int ret;
if (create_if_necessary == CreateIfNecessary::T)
{
ret = nfs_creat(ctx_.get(),
p.string().c_str(),
mode,
&fh);
}
else
{
ret = nfs_open(ctx_.get(),
p.string().c_str(),
mode,
&fh);
}
if (ret < 0)
{
const char* err = nfs_get_error(ctx_.get());
std::stringstream ss;
ss << "Failed to open " << p << ": " << err;
LOG_ERROR(ss.str());
throw Exception(ss.str().c_str());
}
else
{
fh_ = std::shared_ptr<nfsfh>(fh, FhDeleter(ctx_));
}
}
/*
* Open file
*/
static int
nfs_file_open(struct inode *inode, struct file *filp)
{
int res;
dprintk("NFS: open file(%pD2)\n", filp);
nfs_inc_stats(inode, NFSIOS_VFSOPEN);
res = nfs_check_flags(filp->f_flags);
if (res)
return res;
res = nfs_open(inode, filp);
return res;
}
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;
}
/*
* Open file
*/
static int
nfs_file_open(struct inode *inode, struct file *filp)
{
int res;
dprintk("NFS: open file(%s/%s)\n",
filp->f_path.dentry->d_parent->d_name.name,
filp->f_path.dentry->d_name.name);
res = nfs_check_flags(filp->f_flags);
if (res)
return res;
nfs_inc_stats(inode, NFSIOS_VFSOPEN);
res = nfs_open(inode, filp);
return res;
}
int open(const char *path, int flags, mode_t mode)
{
if (!strncmp(path, "nfs:", 4)) {
struct nfs_context *nfs;
struct nfs_url *url;
struct nfsfh *fh = NULL;
int ret, fd;
LD_NFS_DPRINTF(9, "open(%s, %x, %o)", path, flags, mode);
nfs = nfs_init_context();
if (nfs == NULL) {
LD_NFS_DPRINTF(1, "Failed to create context");
errno = ENOMEM;
return -1;
}
url = nfs_parse_url_full(nfs, path);
if (url == NULL) {
LD_NFS_DPRINTF(1, "Failed to parse URL: %s\n",
nfs_get_error(nfs));
nfs_destroy_context(nfs);
errno = EINVAL;
return -1;
}
if (nfs_mount(nfs, url->server, url->path) != 0) {
LD_NFS_DPRINTF(1, "Failed to mount nfs share : %s\n",
nfs_get_error(nfs));
nfs_destroy_url(url);
nfs_destroy_context(nfs);
errno = EINVAL;
return -1;
}
if (flags & O_CREAT) {
if ((ret = nfs_creat(nfs, url->file, mode, &fh)) != 0) {
LD_NFS_DPRINTF(1, "Failed to creat nfs file : "
"%s\n", nfs_get_error(nfs));
nfs_destroy_url(url);
nfs_destroy_context(nfs);
errno = -ret;
return -1;
}
} else {
if ((ret = nfs_open(nfs, url->file, flags, &fh)) != 0) {
LD_NFS_DPRINTF(1, "Failed to open nfs file : "
"%s\n", nfs_get_error(nfs));
nfs_destroy_url(url);
nfs_destroy_context(nfs);
errno = -ret;
return -1;
}
}
fd = nfs_get_fd(nfs);
if (fd >= NFS_MAX_FD) {
LD_NFS_DPRINTF(1, "Too many files open");
nfs_destroy_url(url);
nfs_destroy_context(nfs);
errno = ENFILE;
return -1;
}
nfs_fd_list[fd].is_nfs = 1;
nfs_fd_list[fd].nfs = nfs;
nfs_fd_list[fd].fh = fh;
nfs_fd_list[fd].path = strdup(path);
nfs_fd_list[fd].flags = flags;
nfs_fd_list[fd].mode = mode;
nfs_destroy_url(url);
LD_NFS_DPRINTF(9, "open(%s) == %d", path, fd);
return fd;
}
return real_open(path, flags, mode);
}
int dup2(int oldfd, int newfd)
{
close(newfd);
if (nfs_fd_list[oldfd].is_nfs == 1) {
struct nfs_context *nfs;
struct nfs_url *url;
struct nfsfh *fh = NULL;
int ret, fd;
LD_NFS_DPRINTF(9, "dup2(%s:%d, %d)", nfs_fd_list[oldfd].path,
oldfd, newfd);
nfs = nfs_init_context();
if (nfs == NULL) {
LD_NFS_DPRINTF(1, "Failed to create context");
errno = ENOMEM;
return -1;
}
url = nfs_parse_url_full(nfs, nfs_fd_list[oldfd].path);
if (url == NULL) {
LD_NFS_DPRINTF(1, "Failed to parse URL: %s\n",
nfs_get_error(nfs));
nfs_destroy_context(nfs);
errno = EINVAL;
return -1;
}
if (nfs_mount(nfs, url->server, url->path) != 0) {
LD_NFS_DPRINTF(1, "Failed to mount nfs share : %s\n",
nfs_get_error(nfs));
nfs_destroy_url(url);
nfs_destroy_context(nfs);
errno = EINVAL;
return -1;
}
if ((ret = nfs_open(nfs, url->file, nfs_fd_list[oldfd].mode,
&fh)) != 0) {
LD_NFS_DPRINTF(1, "Failed to open nfs file : %s\n",
nfs_get_error(nfs));
nfs_destroy_url(url);
nfs_destroy_context(nfs);
errno = -ret;
return -1;
}
/* We could actually end on the right descriptor by chance */
if (nfs_get_fd(nfs) != newfd) {
if (real_dup2(nfs_get_fd(nfs), newfd) < 0) {
LD_NFS_DPRINTF(1, "Failed to dup2 file : %d",
errno);
return -1;
}
close(rpc_get_fd(nfs_get_rpc_context(nfs)));
rpc_set_fd(nfs_get_rpc_context(nfs), newfd);
}
fd = nfs_get_fd(nfs);
if (fd >= NFS_MAX_FD) {
LD_NFS_DPRINTF(1, "Too many files open");
nfs_destroy_url(url);
nfs_destroy_context(nfs);
errno = ENFILE;
return -1;
}
nfs_fd_list[fd].is_nfs = 1;
nfs_fd_list[fd].nfs = nfs;
nfs_fd_list[fd].fh = fh;
nfs_fd_list[fd].path = strdup(nfs_fd_list[oldfd].path);
nfs_fd_list[fd].flags = nfs_fd_list[oldfd].flags;
nfs_fd_list[fd].mode = nfs_fd_list[oldfd].mode;
nfs_destroy_url(url);
LD_NFS_DPRINTF(9, "dup2(%s) successful",
nfs_fd_list[oldfd].path);
return fd;
}
return real_dup2(oldfd, newfd);
}
static struct file_context *
open_file(const char *url, int flags)
{
struct file_context *file_context;
char *server = NULL, *path = NULL, *file = NULL, *strp;
file_context = malloc(sizeof(struct file_context));
if (file_context == NULL) {
fprintf(stderr, "Failed to malloc file_context\n");
return NULL;
}
file_context->is_nfs = 0;
file_context->fd = -1;
file_context->nfs = NULL;
file_context->nfsfh = NULL;
if (strncmp(url, "nfs://", 6)) {
file_context->is_nfs = 0;
file_context->fd = open(url, flags, 0660);
if (file_context->fd == -1) {
fprintf(stderr, "Failed to open %s\n", url);
free_file_context(file_context);
return NULL;
}
return file_context;
}
file_context->is_nfs = 1;
file_context->nfs = nfs_init_context();
if (file_context->nfs == NULL) {
fprintf(stderr, "failed to init context\n");
free_file_context(file_context);
return NULL;
}
server = strdup(url + 6);
if (server == NULL) {
fprintf(stderr, "Failed to strdup server string\n");
free_file_context(file_context);
return NULL;
}
if (server[0] == '/' || server[0] == '\0') {
fprintf(stderr, "Invalid server string.\n");
free(server);
free_file_context(file_context);
return NULL;
}
strp = strchr(server, '/');
path = strdup(strp);
*strp = 0;
if (path == NULL) {
fprintf(stderr, "Invalid URL specified.\n");
free(server);
free_file_context(file_context);
return NULL;
}
strp = strrchr(path, '/');
if (strp == NULL) {
fprintf(stderr, "Invalid URL specified.\n");
free(path);
free(server);
free_file_context(file_context);
return NULL;
}
file = strdup(strp);
*strp = 0;
if (nfs_mount(file_context->nfs, server, path) != 0) {
fprintf(stderr, "Failed to mount nfs share : %s\n",
nfs_get_error(file_context->nfs));
free(file);
free(path);
free(server);
free_file_context(file_context);
return NULL;
}
if (flags == O_RDONLY) {
if (nfs_open(file_context->nfs, file, flags,
&file_context->nfsfh) != 0) {
fprintf(stderr, "Failed to open file : %s\n",
nfs_get_error(file_context->nfs));
free(file);
free(path);
free(server);
free_file_context(file_context);
return NULL;
}
} else {
if (nfs_creat(file_context->nfs, file, 0660,
&file_context->nfsfh) != 0) {
fprintf(stderr, "Failed to creat file %s %s\n", file,
nfs_get_error(file_context->nfs));
free(file);
free(path);
free(server);
free_file_context(file_context);
return NULL;
}
}
free(file);
free(path);
free(server);
return file_context;
}
