int _9p_lcreate(struct _9p_request_data *req9p, u32 *plenout, char *preply)
{
char *cursor = req9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE;
u16 *msgtag = NULL;
u32 *fid = NULL;
u32 *flags = NULL;
u32 *mode = NULL;
u32 *gid = NULL;
u16 *name_len = NULL;
char *name_str = NULL;
struct _9p_fid *pfid = NULL;
struct _9p_qid qid_newfile;
u32 iounit = _9P_IOUNIT;
struct fsal_obj_handle *pentry_newfile = NULL;
char file_name[MAXNAMLEN+1];
fsal_status_t fsal_status;
fsal_openflags_t openflags = 0;
struct attrlist sattr;
fsal_verifier_t verifier;
enum fsal_create_mode createmode = FSAL_UNCHECKED;
/* Get data */
_9p_getptr(cursor, msgtag, u16);
_9p_getptr(cursor, fid, u32);
_9p_getstr(cursor, name_len, name_str);
_9p_getptr(cursor, flags, u32);
_9p_getptr(cursor, mode, u32);
_9p_getptr(cursor, gid, u32);
LogDebug(COMPONENT_9P,
"TLCREATE: tag=%u fid=%u name=%.*s flags=0%o mode=0%o gid=%u",
(u32) *msgtag, *fid, *name_len, name_str, *flags, *mode,
*gid);
if (*fid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, msgtag, ERANGE, plenout, preply);
pfid = req9p->pconn->fids[*fid];
/* Check that it is a valid fid */
if (pfid == NULL || pfid->pentry == NULL) {
LogDebug(COMPONENT_9P, "request on invalid fid=%u", *fid);
return _9p_rerror(req9p, msgtag, EIO, plenout, preply);
}
_9p_init_opctx(pfid, req9p);
if ((op_ctx->export_perms->options &
EXPORT_OPTION_WRITE_ACCESS) == 0)
return _9p_rerror(req9p, msgtag, EROFS, plenout, preply);
if (*name_len >= sizeof(file_name)) {
LogDebug(COMPONENT_9P, "request with name too long (%u)",
*name_len);
return _9p_rerror(req9p, msgtag, ENAMETOOLONG, plenout,
preply);
}
snprintf(file_name, sizeof(file_name), "%.*s", *name_len, name_str);
_9p_openflags2FSAL(flags, &openflags);
pfid->state->state_data.fid.share_access =
_9p_openflags_to_share_access(flags);
memset(&verifier, 0, sizeof(verifier));
memset(&sattr, 0, sizeof(sattr));
sattr.valid_mask = ATTR_MODE | ATTR_GROUP;
sattr.mode = *mode;
sattr.group = *gid;
if (*flags & 0x10) {
/* Filesize is already 0. */
sattr.valid_mask |= ATTR_SIZE;
}
if (*flags & 0x1000) {
/* If OEXCL, use FSAL_EXCLUSIVE_9P create mode
* so that we can pass the attributes specified
* above. Verifier is ignored for this create mode
* because we don't have to deal with retry.
*/
createmode = FSAL_EXCLUSIVE_9P;
}
fsal_status = fsal_open2(pfid->pentry,
pfid->state,
openflags,
createmode,
file_name,
&sattr,
verifier,
&pentry_newfile,
NULL);
/* Release the attributes (may release an inherited ACL) */
fsal_release_attrs(&sattr);
if (FSAL_IS_ERROR(fsal_status))
return _9p_rerror(req9p, msgtag,
_9p_tools_errno(fsal_status),
plenout, preply);
/* put parent directory entry */
pfid->pentry->obj_ops->put_ref(pfid->pentry);
/* Build the qid */
qid_newfile.type = _9P_QTFILE;
qid_newfile.version = 0;
qid_newfile.path = pentry_newfile->fileid;
/* The fid will represent the new file now - we can't fail anymore */
pfid->pentry = pentry_newfile;
pfid->qid = qid_newfile;
pfid->xattr = NULL;
pfid->opens = 1;
/* Build the reply */
_9p_setinitptr(cursor, preply, _9P_RLCREATE);
_9p_setptr(cursor, msgtag, u16);
_9p_setqid(cursor, qid_newfile);
_9p_setvalue(cursor, iounit, u32);
_9p_setendptr(cursor, preply);
_9p_checkbound(cursor, preply, plenout);
LogDebug(COMPONENT_9P,
"RLCREATE: tag=%u fid=%u name=%.*s qid=(type=%u,version=%u,path=%llu) iounit=%u pentry=%p",
(u32) *msgtag, *fid, *name_len, name_str, qid_newfile.type,
qid_newfile.version, (unsigned long long)qid_newfile.path,
iounit, pfid->pentry);
return 1;
}
int _9p_xattrwalk( _9p_request_data_t * preq9p,
void * pworker_data,
u32 * plenout,
char * preply)
{
char * cursor = preq9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE ;
// nfs_worker_data_t * pwkrdata = (nfs_worker_data_t *)pworker_data ;
u16 * msgtag = NULL ;
u32 * fid = NULL ;
u32 * attrfid = NULL ;
u16 * wnames_len ;
char * wnames_str ;
int rc = 0 ;
u32 err = 0 ;
if ( !preq9p || !pworker_data || !plenout || !preply )
return -1 ;
/* Get data */
_9p_getptr( cursor, msgtag, u16 ) ;
_9p_getptr( cursor, fid, u32 ) ;
_9p_getptr( cursor, attrfid, u32 ) ;
LogDebug( COMPONENT_9P, "TXATTRWALK: tag=%u fid=%u attrfid=%u" ,
(u32)*msgtag, *fid, *attrfid ) ;
_9p_getstr( cursor, wnames_len, wnames_str ) ;
LogDebug( COMPONENT_9P, "TXATTRWALK (component): tag=%u fid=%u attrfid=%u nwnames=%.*s",
(u32)*msgtag, *fid, *attrfid, *wnames_len, wnames_str ) ;
if( *fid >= _9P_FID_PER_CONN )
{
err = ERANGE ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
if( *attrfid >= _9P_FID_PER_CONN )
{
err = ERANGE ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
/* Build the reply */
_9p_setinitptr( cursor, preply, _9P_RXATTRWALK ) ;
_9p_setptr( cursor, msgtag, u16 ) ;
_9p_setvalue( cursor, 0LL, u64 ) ; /* No xattr for now */
_9p_setendptr( cursor, preply ) ;
_9p_checkbound( cursor, preply, plenout ) ;
LogDebug( COMPONENT_9P, "RXATTRWALK: tag=%u fid=%u attrfid=%u nwnames=%.*s",
(u32)*msgtag, *fid, *attrfid, *wnames_len, wnames_str ) ;
return 1 ;
} /* _9p_xattrwalk */
int _9p_readdir( _9p_request_data_t * preq9p,
void * pworker_data,
u32 * plenout,
char * preply)
{
char * cursor = preq9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE ;
nfs_worker_data_t * pwkrdata = (nfs_worker_data_t *)pworker_data ;
int rc = 0 ;
u32 err = 0 ;
u16 * msgtag = NULL ;
u32 * fid = NULL ;
u64 * offset = NULL ;
u32 * count = NULL ;
u32 dcount = 0 ;
u32 recsize = 0 ;
u16 name_len = 0 ;
char * name_str = NULL ;
u8 * qid_type = NULL ;
u64 * qid_path = NULL ;
char * dcount_pos = NULL ;
cache_inode_status_t cache_status;
cache_inode_dir_entry_t **dirent_array = NULL;
cache_inode_endofdir_t eod_met;
cache_entry_t * pentry_dot_dot = NULL ;
cache_inode_dir_entry_t dirent_dot ;
cache_inode_dir_entry_t dirent_dot_dot ;
unsigned int cookie = 0;
unsigned int end_cookie = 0;
unsigned int estimated_num_entries = 0 ;
unsigned int num_entries = 0 ;
unsigned int delta = 0 ;
int unlock = FALSE ;
u64 i = 0LL ;
if ( !preq9p || !pworker_data || !plenout || !preply )
return -1 ;
_9p_fid_t * pfid = NULL ;
/* Get data */
_9p_getptr( cursor, msgtag, u16 ) ;
_9p_getptr( cursor, fid, u32 ) ;
_9p_getptr( cursor, offset, u64 ) ;
_9p_getptr( cursor, count, u32 ) ;
LogDebug( COMPONENT_9P, "TREADDIR: tag=%u fid=%u offset=%llu count=%u",
(u32)*msgtag, *fid, (unsigned long long)*offset, *count ) ;
if( *fid >= _9P_FID_PER_CONN )
{
err = ERANGE ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
pfid = &preq9p->pconn->fids[*fid] ;
/* Use Cache Inode to read the directory's content */
cookie = (unsigned int)*offset ;
/* For each entry, returns:
* qid = 13 bytes
* offset = 8 bytes
* type = 1 byte
* namelen = 2 bytes
* namestr = ~16 bytes (average size)
* -------------------
* total = ~40 bytes (average size) per dentry */
estimated_num_entries = (unsigned int)( *count / 40 ) ;
if((dirent_array = (cache_inode_dir_entry_t **) Mem_Alloc_Label(
estimated_num_entries * sizeof(cache_inode_dir_entry_t*),
"cache_inode_dir_entry_t in _9p_readdir")) == NULL)
{
err = EIO ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
/* Is this the first request ? */
if( *offset == 0 )
{
/* compute the parent entry */
if( ( pentry_dot_dot = cache_inode_lookupp( pfid->pentry,
pwkrdata->ht,
&pwkrdata->cache_inode_client,
&pfid->fsal_op_context,
&cache_status) ) == NULL )
{
err = _9p_tools_errno( cache_status ) ; ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
/* Deal with "." and ".." */
dirent_dot.pentry = pfid->pentry ;
strcpy( dirent_dot.name.name, "." ) ;
dirent_dot.name.len = strlen( dirent_dot.name.name ) ;
dirent_array[0] = &dirent_dot ;
dirent_dot_dot.pentry = pentry_dot_dot ;
strcpy( dirent_dot_dot.name.name, ".." ) ;
dirent_dot_dot.name.len = strlen( dirent_dot_dot.name.name ) ;
dirent_array[1] = &dirent_dot_dot ;
delta = 2 ;
}
else
delta = 0 ;
if( *offset == 2 )
{
/* offset == 2 as an input as one and only reason:
* - a former call with offset=0 was made and the dir was empty
* - '.' and '..' were returned and nothing else
* - the client makes a new call, expecting it to have empty return
*/
num_entries = 0 ; /* Empty return */
unlock = FALSE ;
}
else if(cache_inode_readdir( pfid->pentry,
pfid->pexport->cache_inode_policy,
cookie,
estimated_num_entries - delta,
&num_entries,
(uint64_t *)&end_cookie,
&eod_met,
&dirent_array[delta],
pwkrdata->ht,
&unlock,
&pwkrdata->cache_inode_client,
&pfid->fsal_op_context,
&cache_status) != CACHE_INODE_SUCCESS)
{
if( unlock ) V_r( &pfid->pentry->lock ) ;
err = _9p_tools_errno( cache_status ) ; ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
/* Unlock the directory if needed */
if( unlock ) V_r( &pfid->pentry->lock ) ;
/* Never go behind _9P_MAXDIRCOUNT */
if( num_entries > _9P_MAXDIRCOUNT ) num_entries = _9P_MAXDIRCOUNT ;
/* Build the reply */
_9p_setinitptr( cursor, preply, _9P_RREADDIR ) ;
_9p_setptr( cursor, msgtag, u16 ) ;
/* Remember dcount position for later use */
_9p_savepos( cursor, dcount_pos, u32 ) ;
/* fills in the dentry in 9P marshalling */
for( i = 0 ; i < num_entries + delta ; i++ )
{
recsize = 0 ;
/* Build qid */
switch( dirent_array[i]->pentry->internal_md.type )
{
case REGULAR_FILE:
qid_path = (u64 *)&dirent_array[i]->pentry->object.file.attributes.fileid ;
qid_type = &qid_type_file ;
break ;
case CHARACTER_FILE:
case BLOCK_FILE:
case SOCKET_FILE:
case FIFO_FILE:
qid_path = (u64 *)&dirent_array[i]->pentry->object.special_obj.attributes.fileid ;
qid_type = &qid_type_file ;
break ;
case SYMBOLIC_LINK:
qid_path = (u64 *)&dirent_array[i]->pentry->object.symlink->attributes.fileid ;
qid_type = &qid_type_symlink;
break ;
case DIRECTORY:
case FS_JUNCTION:
qid_path = (u64 *)&dirent_array[i]->pentry->object.dir.attributes.fileid ;
qid_type = &qid_type_dir ;
break ;
case UNASSIGNED:
case RECYCLED:
default:
LogMajor( COMPONENT_9P, "implementation error, you should not see this message !!!!!!" ) ;
err = EINVAL ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
break ;
}
/* Get dirent name information */
name_str = dirent_array[i]->name.name ;
name_len = dirent_array[i]->name.len ;
/* Add 13 bytes in recsize for qid + 8 bytes for offset + 1 for type + 2 for strlen = 24 bytes*/
recsize = 24 + name_len ;
/* Check if there is room left for another dentry */
if( dcount + recsize > *count )
break ; /* exit for loop */
else
dcount += recsize ;
/* qid in 3 parts */
_9p_setptr( cursor, qid_type, u8 ) ;
_9p_setvalue( cursor, 0, u32 ) ; /* qid_version set to 0 to prevent the client from caching */
_9p_setptr( cursor, qid_path, u64 ) ;
/* offset */
_9p_setvalue( cursor, i+cookie+1, u64 ) ;
/* Type (again ?) */
_9p_setptr( cursor, qid_type, u8 ) ;
/* name */
_9p_setstr( cursor, name_len, name_str ) ;
LogDebug( COMPONENT_9P, "RREADDIR dentry: recsize=%u dentry={ off=%llu,qid=(type=%u,version=%u,path=%llu),type=%u,name=%s,pentry=%p",
recsize, (unsigned long long)i+cookie+1, *qid_type, 0, (unsigned long long)*qid_path,
*qid_type, name_str, dirent_array[i]->pentry ) ;
} /* for( i = 0 , ... ) */
if( !CACHE_INODE_KEEP_CONTENT( pfid->pentry->policy ) )
cache_inode_release_dirent( dirent_array, num_entries, &pwkrdata->cache_inode_client ) ;
Mem_Free((char *)dirent_array);
/* Set buffsize in previously saved position */
_9p_setvalue( dcount_pos, dcount, u32 ) ;
_9p_setendptr( cursor, preply ) ;
_9p_checkbound( cursor, preply, plenout ) ;
LogDebug( COMPONENT_9P, "RREADDIR: tag=%u fid=%u dcount=%u",
(u32)*msgtag, *fid , dcount ) ;
return 1 ;
}
int _9p_xattrwalk(struct _9p_request_data *req9p, u32 *plenout, char *preply)
{
char *cursor = req9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE;
u16 *msgtag = NULL;
u32 *fid = NULL;
u32 *attrfid = NULL;
u16 *name_len;
char *name_str;
size_t attrsize = 0;
fsal_status_t fsal_status;
char name[MAXNAMLEN];
fsal_xattrent_t xattrs_arr[XATTRS_ARRAY_LEN];
int eod_met = false;
unsigned int nb_xattrs_read = 0;
unsigned int i = 0;
char *xattr_cursor = NULL;
unsigned int tmplen = 0;
struct _9p_fid *pfid = NULL;
struct _9p_fid *pxattrfid = NULL;
/* Get data */
_9p_getptr(cursor, msgtag, u16);
_9p_getptr(cursor, fid, u32);
_9p_getptr(cursor, attrfid, u32);
LogDebug(COMPONENT_9P, "TXATTRWALK: tag=%u fid=%u attrfid=%u",
(u32) *msgtag, *fid, *attrfid);
_9p_getstr(cursor, name_len, name_str);
if (*name_len == 0)
LogDebug(COMPONENT_9P,
"TXATTRWALK (component): tag=%u fid=%u attrfid=%u name=(LIST XATTR)",
(u32) *msgtag, *fid, *attrfid);
else
LogDebug(COMPONENT_9P,
"TXATTRWALK (component): tag=%u fid=%u attrfid=%u name=%.*s",
(u32) *msgtag, *fid, *attrfid, *name_len, name_str);
if (*fid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, msgtag, ERANGE, plenout, preply);
if (*attrfid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, msgtag, ERANGE, plenout, preply);
pfid = req9p->pconn->fids[*fid];
/* Check that it is a valid fid */
if (pfid == NULL || pfid->pentry == NULL) {
LogDebug(COMPONENT_9P, "request on invalid fid=%u", *fid);
return _9p_rerror(req9p, msgtag, EIO, plenout, preply);
}
pxattrfid = gsh_calloc(1, sizeof(struct _9p_fid));
if (pxattrfid == NULL)
return _9p_rerror(req9p, msgtag, ENOMEM, plenout, preply);
/* set op_ctx, it will be useful if FSAL is later called */
_9p_init_opctx(pfid, req9p);
/* Initiate xattr's fid by copying file's fid in it */
memcpy((char *)pxattrfid, (char *)pfid, sizeof(struct _9p_fid));
snprintf(name, MAXNAMLEN, "%.*s", *name_len, name_str);
pxattrfid->specdata.xattr.xattr_content = gsh_malloc(XATTR_BUFFERSIZE);
if (pxattrfid->specdata.xattr.xattr_content == NULL) {
gsh_free(pxattrfid);
return _9p_rerror(req9p, msgtag, ENOMEM, plenout, preply);
}
if (*name_len == 0) {
/* xattrwalk is used with an empty name,
* this is a listxattr request */
fsal_status =
pxattrfid->pentry->obj_handle->obj_ops.list_ext_attrs(
pxattrfid->pentry->obj_handle,
FSAL_XATTR_RW_COOKIE, /* Start with RW cookie,
* hiding RO ones */
xattrs_arr,
XATTRS_ARRAY_LEN, /** @todo fix static length */
&nb_xattrs_read,
&eod_met);
if (FSAL_IS_ERROR(fsal_status)) {
gsh_free(pxattrfid->specdata.xattr.xattr_content);
gsh_free(pxattrfid);
return _9p_rerror(req9p, msgtag,
_9p_tools_errno
(cache_inode_error_convert
(fsal_status)), plenout, preply);
}
/* if all xattrent are not read,
* returns ERANGE as listxattr does */
if (eod_met != true) {
gsh_free(pxattrfid->specdata.xattr.xattr_content);
gsh_free(pxattrfid);
return _9p_rerror(req9p, msgtag, ERANGE,
plenout, preply);
}
xattr_cursor = pxattrfid->specdata.xattr.xattr_content;
attrsize = 0;
for (i = 0; i < nb_xattrs_read; i++) {
tmplen =
snprintf(xattr_cursor, MAXNAMLEN, "%s",
xattrs_arr[i].xattr_name);
xattr_cursor[tmplen] = '\0'; /* Just to be sure */
/* +1 for trailing '\0' */
xattr_cursor += tmplen + 1;
attrsize += tmplen + 1;
/* Make sure not to go beyond the buffer */
if (attrsize > XATTR_BUFFERSIZE) {
gsh_free(pxattrfid->specdata.xattr.
xattr_content);
gsh_free(pxattrfid);
return _9p_rerror(req9p, msgtag, ERANGE,
plenout, preply);
}
}
} else {
/* xattrwalk has a non-empty name, use regular setxattr */
fsal_status =
pxattrfid->pentry->obj_handle->obj_ops.
getextattr_id_by_name(pxattrfid->pentry->obj_handle,
name,
&pxattrfid->specdata.xattr.xattr_id);
if (FSAL_IS_ERROR(fsal_status)) {
gsh_free(pxattrfid->specdata.xattr.xattr_content);
gsh_free(pxattrfid);
/* ENOENT for xattr is ENOATTR */
if (fsal_status.major == ERR_FSAL_NOENT)
return _9p_rerror(req9p, msgtag, ENOATTR,
plenout, preply);
else
return _9p_rerror(req9p, msgtag,
_9p_tools_errno
(cache_inode_error_convert
(fsal_status)), plenout,
preply);
}
fsal_status =
pxattrfid->pentry->obj_handle->obj_ops.
getextattr_value_by_name(pxattrfid->pentry->obj_handle,
name,
pxattrfid->specdata.xattr.
xattr_content, XATTR_BUFFERSIZE,
&attrsize);
if (FSAL_IS_ERROR(fsal_status)) {
gsh_free(pxattrfid->specdata.xattr.xattr_content);
gsh_free(pxattrfid);
/* fsal_status.minor is a valid errno code */
return _9p_rerror(req9p, msgtag,
fsal_status.minor, plenout, preply);
}
}
req9p->pconn->fids[*attrfid] = pxattrfid;
/* Increments refcount as we're manually making a new copy */
(void) cache_inode_lru_ref(pfid->pentry, LRU_REQ_STALE_OK);
/* hold reference on gdata */
uid2grp_hold_group_data(pxattrfid->gdata);
get_gsh_export_ref(pfid->export);
get_9p_user_cred_ref(pfid->ucred);
/* Build the reply */
_9p_setinitptr(cursor, preply, _9P_RXATTRWALK);
_9p_setptr(cursor, msgtag, u16);
_9p_setvalue(cursor, attrsize, u64);
_9p_setendptr(cursor, preply);
_9p_checkbound(cursor, preply, plenout);
LogDebug(COMPONENT_9P,
"RXATTRWALK: tag=%u fid=%u attrfid=%u name=%.*s size=%llu",
(u32) *msgtag, *fid, *attrfid, *name_len, name_str,
(unsigned long long)attrsize);
return 1;
} /* _9p_xattrwalk */
int _9p_write(struct _9p_request_data *req9p, u32 *plenout, char *preply)
{
char *cursor = req9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE;
u16 *msgtag = NULL;
u32 *fid = NULL;
u64 *offset = NULL;
u32 *count = NULL;
u32 outcount = 0;
struct _9p_fid *pfid = NULL;
size_t size;
size_t written_size = 0;
char *databuffer = NULL;
/* Get data */
_9p_getptr(cursor, msgtag, u16);
_9p_getptr(cursor, fid, u32);
_9p_getptr(cursor, offset, u64);
_9p_getptr(cursor, count, u32);
databuffer = cursor;
LogDebug(COMPONENT_9P, "TWRITE: tag=%u fid=%u offset=%llu count=%u",
(u32) *msgtag, *fid, (unsigned long long)*offset, *count);
if (*fid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, msgtag, ERANGE, plenout, preply);
pfid = req9p->pconn->fids[*fid];
/* Make sure the requested amount of data respects negotiated msize */
if (*count + _9P_ROOM_TWRITE > req9p->pconn->msize)
return _9p_rerror(req9p, msgtag, ERANGE, plenout, preply);
/* Check that it is a valid fid */
if (pfid == NULL || pfid->pentry == NULL) {
LogDebug(COMPONENT_9P, "request on invalid fid=%u", *fid);
return _9p_rerror(req9p, msgtag, EIO, plenout, preply);
}
_9p_init_opctx(pfid, req9p);
if ((op_ctx->export_perms->options &
EXPORT_OPTION_WRITE_ACCESS) == 0)
return _9p_rerror(req9p, msgtag, EROFS, plenout, preply);
/* Do the job */
size = *count;
if (pfid->xattr != NULL) {
if (*offset > pfid->xattr->xattr_size)
return _9p_rerror(req9p, msgtag, EINVAL, plenout,
preply);
if (pfid->xattr->xattr_write != _9P_XATTR_CAN_WRITE &&
pfid->xattr->xattr_write != _9P_XATTR_DID_WRITE)
return _9p_rerror(req9p, msgtag, EINVAL, plenout,
preply);
written_size = MIN(*count,
pfid->xattr->xattr_size - *offset);
memcpy(pfid->xattr->xattr_content + *offset,
databuffer, written_size);
pfid->xattr->xattr_offset += size;
pfid->xattr->xattr_write = _9P_XATTR_DID_WRITE;
/* ADD CODE TO DETECT GAP */
#if 0
fsal_status =
pfid->pentry->ops->setextattr_value_by_id(
pfid->pentry,
&pfid->op_context,
pfid->xattr->xattr_id,
xattrval, size + 1);
if (FSAL_IS_ERROR(fsal_status))
return _9p_rerror(req9p, msgtag,
_9p_tools_errno(fsal_status), plenout,
preply);
#endif
outcount = written_size;
} else {
struct _9p_write_data write_data;
struct fsal_io_arg *write_arg = alloca(sizeof(*write_arg) +
sizeof(struct iovec));
write_arg->info = NULL;
write_arg->state = pfid->state;
write_arg->offset = *offset;
write_arg->iov_count = 1;
write_arg->iov[0].iov_len = size;
write_arg->iov[0].iov_base = databuffer;
write_arg->io_amount = 0;
write_arg->fsal_stable = false;
write_data.client = req9p->pconn->client;
/* Do the actual write */
pfid->pentry->obj_ops->write2(pfid->pentry, true, _9p_write_cb,
write_arg, &write_data);
if (FSAL_IS_ERROR(write_data.ret))
return _9p_rerror(req9p, msgtag,
_9p_tools_errno(write_data.ret),
plenout, preply);
outcount = (u32) write_arg->io_amount;
}
/* Build the reply */
_9p_setinitptr(cursor, preply, _9P_RWRITE);
_9p_setptr(cursor, msgtag, u16);
_9p_setvalue(cursor, outcount, u32);
_9p_setendptr(cursor, preply);
_9p_checkbound(cursor, preply, plenout);
LogDebug(COMPONENT_9P,
"RWRITE: tag=%u fid=%u offset=%llu input count=%u output count=%u",
(u32) *msgtag, *fid, (unsigned long long)*offset, *count,
outcount);
/**
* @todo write statistics accounting goes here
* modeled on nfs I/O stats
*/
return 1;
}
int _9p_statfs(struct _9p_request_data *req9p, void *worker_data,
u32 *plenout, char *preply)
{
char *cursor = req9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE;
u16 *msgtag = NULL;
u32 *fid = NULL;
struct _9p_fid *pfid = NULL;
u32 type = 0x6969; /* NFS_SUPER_MAGIC for wanting of better,
* FSAL do not return this information */
u32 bsize = 1; /* cache_inode_statfs and
* FSAL already care for blocksize */
u64 *blocks = NULL;
u64 *bfree = NULL;
u64 *bavail = NULL;
u64 *files = NULL;
u64 *ffree = NULL;
u64 fsid = 0LL;
u32 namelen = MAXNAMLEN;
fsal_dynamicfsinfo_t dynamicinfo;
cache_inode_status_t cache_status;
/* Get data */
_9p_getptr(cursor, msgtag, u16);
_9p_getptr(cursor, fid, u32);
LogDebug(COMPONENT_9P, "TSTATFS: tag=%u fid=%u", (u32) *msgtag, *fid);
if (*fid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, worker_data, msgtag, ERANGE, plenout,
preply);
pfid = req9p->pconn->fids[*fid];
if (pfid == NULL)
return _9p_rerror(req9p, worker_data, msgtag, EINVAL, plenout,
preply);
/* Get the FS's stats */
cache_status = cache_inode_statfs(pfid->pentry, &dynamicinfo,
&pfid->op_context);
if (cache_status != CACHE_INODE_SUCCESS)
return _9p_rerror(req9p, worker_data, msgtag,
_9p_tools_errno(cache_status), plenout,
preply);
blocks = (u64 *) &dynamicinfo.total_bytes;
bfree = (u64 *) &dynamicinfo.free_bytes;
bavail = (u64 *) &dynamicinfo.avail_bytes;
files = (u64 *) &dynamicinfo.total_files;
ffree = (u64 *) &dynamicinfo.free_files;
fsid = (u64) pfid->pentry->obj_handle->attributes.rawdev.major;
/* Build the reply */
_9p_setinitptr(cursor, preply, _9P_RSTATFS);
_9p_setptr(cursor, msgtag, u16);
_9p_setvalue(cursor, type, u32);
_9p_setvalue(cursor, bsize, u32);
_9p_setptr(cursor, blocks, u64);
_9p_setptr(cursor, bfree, u64);
_9p_setptr(cursor, bavail, u64);
_9p_setptr(cursor, files, u64);
_9p_setptr(cursor, ffree, u64);
_9p_setvalue(cursor, fsid, u64);
_9p_setvalue(cursor, namelen, u32);
_9p_setendptr(cursor, preply);
_9p_checkbound(cursor, preply, plenout);
LogDebug(COMPONENT_9P, "RSTATFS: tag=%u fid=%u", (u32) *msgtag, *fid);
return 1;
}
int _9p_statfs( _9p_request_data_t * preq9p,
void * pworker_data,
u32 * plenout,
char * preply)
{
char * cursor = preq9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE ;
nfs_worker_data_t * pwkrdata = (nfs_worker_data_t *)pworker_data ;
u16 * msgtag = NULL ;
u32 * fid = NULL ;
u64 * request_mask = NULL ;
_9p_fid_t * pfid = NULL ;
u32 type = 0x6969 ; /* NFS_SUPER_MAGIC for wanting of better, FSAL do not return this information */
u32 bsize = DEV_BSIZE ;
u64 * blocks = NULL ;
u64 * bfree = NULL ;
u64 * bavail = NULL ;
u64 * files = NULL ;
u64 * ffree = NULL ;
u64 fsid = 0LL ;
u32 namelen = MAXNAMLEN ;
int rc = 0 ;
int err = 0 ;
fsal_dynamicfsinfo_t dynamicinfo;
cache_inode_status_t cache_status;
if ( !preq9p || !pworker_data || !plenout || !preply )
return -1 ;
/* Get data */
_9p_getptr( cursor, msgtag, u16 ) ;
_9p_getptr( cursor, fid, u32 ) ;
LogDebug( COMPONENT_9P, "TSTATFS: tag=%u fid=%u",
(u32)*msgtag, *fid ) ;
if( *fid >= _9P_FID_PER_CONN )
{
err = ERANGE ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
pfid = &preq9p->pconn->fids[*fid] ;
/* Get the FS's stats */
if( cache_inode_statfs( pfid->pentry,
&dynamicinfo,
&pfid->fsal_op_context,
&cache_status ) != CACHE_INODE_SUCCESS )
{
err = _9p_tools_errno( cache_status ) ; ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
blocks = (u64 *)&dynamicinfo.total_bytes ;
bfree = (u64 *)&dynamicinfo.free_bytes ;
bavail = (u64 *)&dynamicinfo.avail_bytes ;
files = (u64 *)&dynamicinfo.total_files ;
ffree = (u64 *)&dynamicinfo.free_files ;
fsid = (u64 )pfid->attr.st_dev ;
/* Build the reply */
_9p_setinitptr( cursor, preply, _9P_RSTATFS ) ;
_9p_setptr( cursor, msgtag, u16 ) ;
_9p_setvalue( cursor, type, u32 ) ;
_9p_setvalue( cursor, bsize, u32 ) ;
_9p_setptr( cursor, blocks, u64 ) ;
_9p_setptr( cursor, bfree, u64 ) ;
_9p_setptr( cursor, bavail, u64 ) ;
_9p_setptr( cursor, files, u64 ) ;
_9p_setptr( cursor, ffree, u64 ) ;
_9p_setvalue( cursor, fsid, u64 ) ;
_9p_setvalue( cursor, namelen, u32 ) ;
_9p_setendptr( cursor, preply ) ;
_9p_checkbound( cursor, preply, plenout ) ;
LogDebug( COMPONENT_9P, "RSTATFS: tag=%u fid=%u",
(u32)*msgtag, *fid ) ;
return 1 ;
}
int _9p_write( _9p_request_data_t * preq9p,
void * pworker_data,
u32 * plenout,
char * preply)
{
char * cursor = preq9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE ;
nfs_worker_data_t * pwkrdata = (nfs_worker_data_t *)pworker_data ;
int rc = 0 ;
u32 err = 0 ;
u16 * msgtag = NULL ;
u32 * fid = NULL ;
u64 * offset = NULL ;
u32 * count = NULL ;
u32 outcount = 0 ;
_9p_fid_t * pfid = NULL ;
fsal_seek_t seek_descriptor;
fsal_size_t size;
fsal_size_t written_size = 0;
fsal_attrib_list_t attr;
fsal_boolean_t eof_met;
cache_inode_status_t cache_status = CACHE_INODE_SUCCESS;
uint64_t stable_flag = FSAL_SAFE_WRITE_TO_FS;
caddr_t databuffer = NULL ;
/* Get data */
_9p_getptr( cursor, msgtag, u16 ) ;
_9p_getptr( cursor, fid, u32 ) ;
_9p_getptr( cursor, offset, u64 ) ;
_9p_getptr( cursor, count, u32 ) ;
databuffer = cursor ;
LogDebug( COMPONENT_9P, "TWRITE: tag=%u fid=%u offset=%llu count=%u",
(u32)*msgtag, *fid, (unsigned long long)*offset, *count ) ;
if( *fid >= _9P_FID_PER_CONN )
{
err = ERANGE ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
pfid = &preq9p->pconn->fids[*fid] ;
/* Do the job */
seek_descriptor.whence = FSAL_SEEK_SET ;
seek_descriptor.offset = *offset;
size = *count ;
if(cache_inode_rdwr( pfid->pentry,
CACHE_INODE_WRITE,
&seek_descriptor,
size,
&written_size,
&attr,
databuffer,
&eof_met,
pwkrdata->ht,
&pwkrdata->cache_inode_client,
&pfid->fsal_op_context,
stable_flag,
&cache_status ) != CACHE_INODE_SUCCESS )
{
err = _9p_tools_errno( cache_status ) ; ;
rc = _9p_rerror( preq9p, msgtag, &err, plenout, preply ) ;
return rc ;
}
outcount = (u32)written_size ;
/* Build the reply */
_9p_setinitptr( cursor, preply, _9P_RWRITE ) ;
_9p_setptr( cursor, msgtag, u16 ) ;
_9p_setvalue( cursor, outcount, u32 ) ;
_9p_setendptr( cursor, preply ) ;
_9p_checkbound( cursor, preply, plenout ) ;
LogDebug( COMPONENT_9P, "RWRITE: tag=%u fid=%u offset=%llu input count=%u output count=%u",
(u32)*msgtag, *fid , (unsigned long long)*offset, *count, outcount ) ;
return 1 ;
}
int _9p_write(struct _9p_request_data *req9p, u32 *plenout, char *preply)
{
char *cursor = req9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE;
u16 *msgtag = NULL;
u32 *fid = NULL;
u64 *offset = NULL;
u32 *count = NULL;
u32 outcount = 0;
struct _9p_fid *pfid = NULL;
size_t size;
size_t written_size = 0;
bool eof_met;
cache_inode_status_t cache_status = CACHE_INODE_SUCCESS;
/* bool sync = true; */
bool sync = false;
char *databuffer = NULL;
/* fsal_status_t fsal_status; */
/* Get data */
_9p_getptr(cursor, msgtag, u16);
_9p_getptr(cursor, fid, u32);
_9p_getptr(cursor, offset, u64);
_9p_getptr(cursor, count, u32);
databuffer = cursor;
LogDebug(COMPONENT_9P, "TWRITE: tag=%u fid=%u offset=%llu count=%u",
(u32) *msgtag, *fid, (unsigned long long)*offset, *count);
if (*fid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, msgtag, ERANGE, plenout, preply);
pfid = req9p->pconn->fids[*fid];
/* Make sure the requested amount of data respects negotiated msize */
if (*count + _9P_ROOM_TWRITE > req9p->pconn->msize)
return _9p_rerror(req9p, msgtag, ERANGE, plenout, preply);
/* Check that it is a valid fid */
if (pfid == NULL || pfid->pentry == NULL) {
LogDebug(COMPONENT_9P, "request on invalid fid=%u", *fid);
return _9p_rerror(req9p, msgtag, EIO, plenout, preply);
}
_9p_init_opctx(pfid, req9p);
if ((op_ctx->export_perms->options &
EXPORT_OPTION_WRITE_ACCESS) == 0)
return _9p_rerror(req9p, msgtag, EROFS, plenout, preply);
/* Do the job */
size = *count;
if (pfid->specdata.xattr.xattr_content != NULL) {
memcpy(pfid->specdata.xattr.xattr_content + (*offset),
databuffer, size);
pfid->specdata.xattr.xattr_offset += size;
pfid->specdata.xattr.xattr_write = true;
/* ADD CODE TO DETECT GAP */
#if 0
fsal_status =
pfid->pentry->obj_handle->ops->setextattr_value_by_id(
pfid->pentry->obj_handle,
&pfid->op_context,
pfid->specdata.xattr.xattr_id,
xattrval, size + 1);
if (FSAL_IS_ERROR(fsal_status))
return _9p_rerror(req9p, msgtag,
_9p_tools_errno
(cache_inode_error_convert
(fsal_status)), plenout, preply);
#endif
outcount = *count;
} else {
cache_status = cache_inode_rdwr(pfid->pentry, CACHE_INODE_WRITE,
*offset, size, &written_size,
databuffer, &eof_met, &sync,
NULL);
/* Get the handle, for stats */
struct gsh_client *client = req9p->pconn->client;
if (client == NULL) {
LogDebug(COMPONENT_9P,
"Cannot get client block for 9P request");
} else {
op_ctx->client = client;
server_stats_io_done(size,
written_size,
(cache_status ==
CACHE_INODE_SUCCESS) ?
true : false,
true);
}
if (cache_status != CACHE_INODE_SUCCESS)
return _9p_rerror(req9p, msgtag,
_9p_tools_errno(cache_status),
plenout, preply);
outcount = (u32) written_size;
}
/* Build the reply */
_9p_setinitptr(cursor, preply, _9P_RWRITE);
_9p_setptr(cursor, msgtag, u16);
_9p_setvalue(cursor, outcount, u32);
_9p_setendptr(cursor, preply);
_9p_checkbound(cursor, preply, plenout);
LogDebug(COMPONENT_9P,
"RWRITE: tag=%u fid=%u offset=%llu input count=%u output count=%u",
(u32) *msgtag, *fid, (unsigned long long)*offset, *count,
outcount);
/**
* @todo write statistics accounting goes here
* modeled on nfs I/O stats
*/
return 1;
}
int _9p_xattrwalk(struct _9p_request_data *req9p, void *worker_data,
u32 *plenout, char *preply)
{
char *cursor = req9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE;
u16 *msgtag = NULL;
u32 *fid = NULL;
u32 *attrfid = NULL;
u16 *name_len;
char *name_str;
u64 attrsize = 0LL;
fsal_status_t fsal_status;
char name[MAXNAMLEN];
fsal_xattrent_t xattrs_tab[255];
int eod_met = false;
unsigned int nb_xattrs_read = 0;
unsigned int i = 0;
char *xattr_cursor = NULL;
unsigned int tmplen = 0;
struct _9p_fid *pfid = NULL;
struct _9p_fid *pxattrfid = NULL;
/* Get data */
_9p_getptr(cursor, msgtag, u16);
_9p_getptr(cursor, fid, u32);
_9p_getptr(cursor, attrfid, u32);
LogDebug(COMPONENT_9P, "TXATTRWALK: tag=%u fid=%u attrfid=%u",
(u32) *msgtag, *fid, *attrfid);
_9p_getstr(cursor, name_len, name_str);
if (*name_len == 0)
LogDebug(COMPONENT_9P,
"TXATTRWALK (component): tag=%u fid=%u attrfid=%u name=(LIST XATTR)",
(u32) *msgtag, *fid, *attrfid);
else
LogDebug(COMPONENT_9P,
"TXATTRWALK (component): tag=%u fid=%u attrfid=%u name=%.*s",
(u32) *msgtag, *fid, *attrfid, *name_len, name_str);
if (*fid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, worker_data, msgtag, ERANGE, plenout,
preply);
if (*attrfid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, worker_data, msgtag, ERANGE, plenout,
preply);
pfid = req9p->pconn->fids[*fid];
/* Check that it is a valid fid */
if (pfid == NULL || pfid->pentry == NULL) {
LogDebug(COMPONENT_9P, "request on invalid fid=%u", *fid);
return _9p_rerror(req9p, worker_data, msgtag, EIO, plenout,
preply);
}
pxattrfid = gsh_calloc(1, sizeof(struct _9p_fid));
if (pxattrfid == NULL)
return _9p_rerror(req9p, worker_data, msgtag, ENOMEM, plenout,
preply);
/* Initiate xattr's fid by copying file's fid in it */
memcpy((char *)pxattrfid, (char *)pfid, sizeof(struct _9p_fid));
snprintf(name, MAXNAMLEN, "%.*s", *name_len, name_str);
pxattrfid->specdata.xattr.xattr_content = gsh_malloc(XATTR_BUFFERSIZE);
if (pxattrfid->specdata.xattr.xattr_content == NULL) {
gsh_free(pxattrfid);
return _9p_rerror(req9p, worker_data, msgtag, ENOMEM, plenout,
preply);
}
if (*name_len == 0) {
/* xattrwalk is used with an empty name,
* this is a listxattr request */
fsal_status =
pxattrfid->pentry->obj_handle->ops->list_ext_attrs(
pxattrfid->pentry->obj_handle, &pfid->op_context,
FSAL_XATTR_RW_COOKIE, /* Start with RW cookie,
* hiding RO ones */
xattrs_tab, 100, /* static array size for now */
&nb_xattrs_read,
&eod_met);
if (FSAL_IS_ERROR(fsal_status)) {
gsh_free(pxattrfid->specdata.xattr.xattr_content);
gsh_free(pxattrfid);
return _9p_rerror(req9p, worker_data, msgtag,
_9p_tools_errno
(cache_inode_error_convert
(fsal_status)), plenout, preply);
}
/* if all xattrent are not read,
* returns ERANGE as listxattr does */
if (eod_met != TRUE) {
gsh_free(pxattrfid->specdata.xattr.xattr_content);
gsh_free(pxattrfid);
return _9p_rerror(req9p, worker_data, msgtag, ERANGE,
plenout, preply);
}
xattr_cursor = pxattrfid->specdata.xattr.xattr_content;
attrsize = 0LL;
for (i = 0; i < nb_xattrs_read; i++) {
tmplen =
snprintf(xattr_cursor, MAXNAMLEN, "%s",
xattrs_tab[i].xattr_name);
xattr_cursor[tmplen] = '\0'; /* Just to be sure */
/* +1 for trailing '\0' */
xattr_cursor += tmplen + 1;
attrsize += tmplen + 1;
/* Make sure not to go beyond the buffer */
if (attrsize > XATTR_BUFFERSIZE) {
gsh_free(pxattrfid->specdata.xattr.
xattr_content);
gsh_free(pxattrfid);
return _9p_rerror(req9p, worker_data, msgtag,
ERANGE, plenout, preply);
}
}
} else {
/* xattrwalk has a non-empty name, use regular setxattr */
fsal_status =
pxattrfid->pentry->obj_handle->ops->
getextattr_id_by_name(pxattrfid->pentry->obj_handle,
&pfid->op_context, name,
&pxattrfid->specdata.xattr.xattr_id);
if (FSAL_IS_ERROR(fsal_status)) {
gsh_free(pxattrfid->specdata.xattr.xattr_content);
gsh_free(pxattrfid);
/* Hook dedicated to ACL management. When attributes
* system.posix_acl_access is used, it can't be
* created, but can be written anyway.
* To do this, return ENODATA instead of ENOATTR
* In this case, we do created what's needed to
* setxattr() into the special xattr */
if (!strncmp(name,
"system.posix_acl_access",
MAXNAMLEN))
return _9p_rerror(req9p, worker_data, msgtag,
ENODATA, plenout, preply);
/* ENOENT for xattr is ENOATTR */
if (fsal_status.major == ERR_FSAL_NOENT)
return _9p_rerror(req9p, worker_data, msgtag,
ENOATTR, plenout, preply);
else
return _9p_rerror(req9p, worker_data, msgtag,
_9p_tools_errno
(cache_inode_error_convert
(fsal_status)), plenout,
preply);
}
fsal_status =
pxattrfid->pentry->obj_handle->ops->
getextattr_value_by_name(pxattrfid->pentry->obj_handle,
&pfid->op_context, name,
pxattrfid->specdata.xattr.
xattr_content, XATTR_BUFFERSIZE,
&attrsize);
if (FSAL_IS_ERROR(fsal_status)) {
gsh_free(pxattrfid->specdata.xattr.xattr_content);
gsh_free(pxattrfid);
if (fsal_status.minor == ENODATA) {
return _9p_rerror(req9p, worker_data, msgtag,
ENODATA, plenout, preply);
}
return _9p_rerror(req9p, worker_data, msgtag,
_9p_tools_errno
(cache_inode_error_convert
(fsal_status)), plenout, preply);
}
}
req9p->pconn->fids[*attrfid] = pxattrfid;
/* Increments refcount so it won't fall below 0 when we clunk later */
cache_inode_lru_ref(pxattrfid->pentry, LRU_REQ_INITIAL);
/* Build the reply */
_9p_setinitptr(cursor, preply, _9P_RXATTRWALK);
_9p_setptr(cursor, msgtag, u16);
_9p_setvalue(cursor, attrsize, u64);
_9p_setendptr(cursor, preply);
_9p_checkbound(cursor, preply, plenout);
LogDebug(COMPONENT_9P,
"RXATTRWALK: tag=%u fid=%u attrfid=%u name=%.*s size=%llu",
(u32) *msgtag, *fid, *attrfid, *name_len, name_str,
(unsigned long long)attrsize);
return 1;
} /* _9p_xattrwalk */
