int _9p_lopen( _9p_request_data_t * preq9p,
void * pworker_data,
u32 * plenout,
char * preply)
{
char * cursor = preq9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE ;
u16 * msgtag = NULL ;
u32 * fid = NULL ;
u32 * flags = NULL ;
cache_inode_status_t cache_status ;
fsal_openflags_t openflags = 0 ;
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, flags, u32 ) ;
LogDebug( COMPONENT_9P, "TLOPEN: tag=%u fid=%u flags=0x%x",
(u32)*msgtag, *fid, *flags ) ;
if( *fid >= _9P_FID_PER_CONN )
return _9p_rerror( preq9p, msgtag, ERANGE, plenout, preply ) ;
pfid = &preq9p->pconn->fids[*fid] ;
_9p_openflags2FSAL( flags, &openflags ) ;
if( pfid->pentry->type == REGULAR_FILE ) /** @todo: Maybe other types (FIFO, sOCKET,...) may require to be opened too */
{
if(cache_inode_open( pfid->pentry,
openflags,
&pfid->fsal_op_context,
0,
&cache_status) != CACHE_INODE_SUCCESS)
return _9p_rerror( preq9p, msgtag, _9p_tools_errno( cache_status ), plenout, preply ) ;
}
/* iounit = 0 by default */
pfid->specdata.iounit = 0 ;
/* Build the reply */
_9p_setinitptr( cursor, preply, _9P_RLOPEN ) ;
_9p_setptr( cursor, msgtag, u16 ) ;
_9p_setqid( cursor, pfid->qid ) ;
_9p_setptr( cursor, &pfid->specdata.iounit, u32 ) ;
_9p_setendptr( cursor, preply ) ;
_9p_checkbound( cursor, preply, plenout ) ;
LogDebug( COMPONENT_9P, "RLOPEN: tag=%u fid=%u qid=(type=%u,version=%u,path=%llu) iounit=%u",
*msgtag, *fid, (u32)pfid->qid.type, pfid->qid.version, (unsigned long long)pfid->qid.path, pfid->specdata.iounit ) ;
return 1 ;
}
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_lopen(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 *flags = NULL;
cache_inode_status_t cache_status;
fsal_openflags_t openflags = 0;
struct _9p_fid *pfid = NULL;
/* Get data */
_9p_getptr(cursor, msgtag, u16);
_9p_getptr(cursor, fid, u32);
_9p_getptr(cursor, flags, u32);
LogDebug(COMPONENT_9P, "TLOPEN: tag=%u fid=%u flags=0x%x",
(u32) *msgtag, *fid, *flags);
if (*fid >= _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);
}
_9p_openflags2FSAL(flags, &openflags);
op_ctx = &pfid->op_context;
if (pfid->pentry->type == REGULAR_FILE) {
/** @todo: Maybe other types (FIFO, SOCKET,...) require
* to be opened too */
if (!atomic_postinc_uint32_t(&pfid->opens)) {
cache_status = cache_inode_inc_pin_ref(pfid->pentry);
if (cache_status != CACHE_INODE_SUCCESS)
return _9p_rerror(req9p, worker_data, msgtag,
_9p_tools_errno(cache_status),
plenout, preply);
}
cache_status =
cache_inode_open(pfid->pentry, openflags, 0);
if (cache_status != CACHE_INODE_SUCCESS)
return _9p_rerror(req9p, worker_data, msgtag,
_9p_tools_errno(cache_status),
plenout, preply);
}
/* iounit = 0 by default */
pfid->specdata.iounit = _9P_IOUNIT;
/* Build the reply */
_9p_setinitptr(cursor, preply, _9P_RLOPEN);
_9p_setptr(cursor, msgtag, u16);
_9p_setqid(cursor, pfid->qid);
_9p_setptr(cursor, &pfid->specdata.iounit, u32);
_9p_setendptr(cursor, preply);
_9p_checkbound(cursor, preply, plenout);
LogDebug(COMPONENT_9P,
"RLOPEN: tag=%u fid=%u qid=(type=%u,version=%u,path=%llu) iounit=%u",
*msgtag, *fid, (u32) pfid->qid.type, pfid->qid.version,
(unsigned long long)pfid->qid.path, pfid->specdata.iounit);
return 1;
}
