static nfsstat4 open4_create_fh(compound_data_t *data,
struct fsal_obj_handle *obj,
bool state_lock_held)
{
bool set_no_cleanup = false;
/* Building a new fh */
if (!nfs4_FSALToFhandle(false, &data->currentFH, obj,
op_ctx->ctx_export)) {
obj->obj_ops->put_ref(obj);
return NFS4ERR_SERVERFAULT;
}
/* Update the current entry */
set_current_entry(data, obj);
if (state_lock_held) {
/* Make sure we don't do cleanup holding the state_lock.
* there will be an additional put_ref without the state_lock
* being held.
*/
obj->state_hdl->no_cleanup = true;
set_no_cleanup = true;
}
/* Put our ref */
obj->obj_ops->put_ref(obj);
if (set_no_cleanup) {
/* And clear the no_cleanup we set above. */
obj->state_hdl->no_cleanup = false;
}
return NFS4_OK;
}
/**
* nfs4_op_readdir: The NFS4_OP_READDIR.
*
* Implements the NFS4_OP_READDIR. If fh is a pseudo FH, then call is routed to routine nfs4_op_readdir_pseudo
*
* @param op [IN] pointer to nfs4_op arguments
* @param data [INOUT] Pointer to the compound request's data
* @param resp [IN] Pointer to nfs4_op results
*
* @return NFS4_OK if ok, any other value show an error.
*
*/
int nfs4_op_readdir(struct nfs_argop4 *op,
compound_data_t * data, struct nfs_resop4 *resp)
{
cache_entry_t *dir_pentry = NULL;
cache_entry_t *pentry = NULL;
cache_inode_endofdir_t eod_met;
fsal_attrib_list_t attrlookup;
cache_inode_status_t cache_status;
cache_inode_status_t cache_status_attr;
char __attribute__ ((__unused__)) funcname[] = "nfs4_op_readdir";
unsigned long dircount;
unsigned long maxcount;
entry4 *entry_nfs_array;
cache_inode_dir_entry_t **dirent_array = NULL;
verifier4 cookie_verifier;
uint64_t cookie = 0;
uint64_t end_cookie = 0;
fsal_handle_t *entry_FSALhandle;
nfs_fh4 entryFH;
char val_fh[NFS4_FHSIZE];
entry_name_array_item_t *entry_name_array = NULL;
unsigned int estimated_num_entries;
unsigned int num_entries;
int dir_pentry_unlock = FALSE;
unsigned int i = 0;
unsigned int outbuffsize = 0 ;
unsigned int entrysize = 0 ;
bitmap4 RdAttrErrorBitmap = { 1, (uint32_t *) "\0\0\0\b" }; /* 0xB = 11 = FATTR4_RDATTR_ERROR */
attrlist4 RdAttrErrorVals = { 0, NULL }; /* Nothing to be seen here */
resp->resop = NFS4_OP_READDIR;
res_READDIR4.status = NFS4_OK;
entryFH.nfs_fh4_len = 0;
entryFH.nfs_fh4_val = val_fh;
/* If there is no FH */
if(nfs4_Is_Fh_Empty(&(data->currentFH)))
{
res_READDIR4.status = NFS4ERR_NOFILEHANDLE;
return res_READDIR4.status;
}
/* If the filehandle is invalid */
if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
{
res_READDIR4.status = NFS4ERR_BADHANDLE;
return res_READDIR4.status;
}
/* Tests if the Filehandle is expired (for volatile filehandle) */
if(nfs4_Is_Fh_Expired(&(data->currentFH)))
{
res_READDIR4.status = NFS4ERR_FHEXPIRED;
return res_READDIR4.status;
}
/* Pseudo Fs management */
if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
return nfs4_op_readdir_pseudo(op, data, resp);
/* Xattrs management */
if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
return nfs4_op_readdir_xattr(op, data, resp);
/* You can readdir only within a directory */
dir_pentry = data->current_entry;
if(data->current_filetype != DIRECTORY)
{
res_READDIR4.status = NFS4ERR_NOTDIR;
return res_READDIR4.status;
}
/* get the characteristic value for readdir operation */
dircount = arg_READDIR4.dircount;
maxcount = arg_READDIR4.maxcount*0.9;
cookie = (unsigned int)arg_READDIR4.cookie;
/* dircount is considered meaningless by many nfsv4 client (like the CITI
* one). we use maxcount instead. */
/* the Linux 3.0, 3.1.0 clients vs. TCP Ganesha comes out 10x slower
* with 500 max entries */
#if 0
/* takes 2s to return 2999 entries */
estimated_num_entries = maxcount / sizeof(entry4);
#else
/* takes 20s to return 2999 entries */
estimated_num_entries = 50;
#endif
LogFullDebug(COMPONENT_NFS_V4,
"--- nfs4_op_readdir ---> dircount=%lu maxcount=%lu arg_cookie=%"
PRIu64" cookie=%"PRIu64" estimated_num_entries=%u",
dircount, maxcount, arg_READDIR4.cookie, cookie,
estimated_num_entries);
/* Do not use a cookie of 1 or 2 (reserved values) */
if(cookie == 1 || cookie == 2)
{
res_READDIR4.status = NFS4ERR_BAD_COOKIE;
return res_READDIR4.status;
}
/* Get only attributes that are allowed to be read */
if(!nfs4_Fattr_Check_Access_Bitmap(&arg_READDIR4.attr_request,
FATTR4_ATTR_READ))
{
res_READDIR4.status = NFS4ERR_INVAL;
return res_READDIR4.status;
}
/* If maxcount is too short, return NFS4ERR_TOOSMALL */
if(maxcount < sizeof(entry4) || estimated_num_entries == 0)
{
res_READDIR4.status = NFS4ERR_TOOSMALL;
return res_READDIR4.status;
}
/*
* If cookie verifier is used, then an non-trivial value is
* returned to the client This value is the mtime of
* the pentry. If verifier is unused (as in many NFS
* Servers) then only a set of zeros is returned (trivial
* value)
*/
memset(cookie_verifier, 0, NFS4_VERIFIER_SIZE);
if(data->pexport->UseCookieVerifier == 1)
memcpy(cookie_verifier, &dir_pentry->internal_md.mod_time, sizeof(time_t));
/* Cookie delivered by the server and used by the client SHOULD not ne 0, 1 or 2 (cf RFC3530, page192)
* because theses value are reserved for special use.
* 0 - cookie for first READDIR
* 1 - reserved for . on client handside
* 2 - reserved for .. on client handside
* Entries '.' and '..' are not returned also
* For these reason, there will be an offset of 3 between NFS4 cookie and
* HPSS cookie */
if((cookie != 0) && (data->pexport->UseCookieVerifier == 1))
{
if(memcmp(cookie_verifier, arg_READDIR4.cookieverf, NFS4_VERIFIER_SIZE) != 0)
{
res_READDIR4.status = NFS4ERR_BAD_COOKIE;
return res_READDIR4.status;
}
}
/* The default behaviour is to consider that eof is not reached, the
* returned values by cache_inode_readdir will let us know if eod was
* reached or not */
res_READDIR4.READDIR4res_u.resok4.reply.eof = FALSE;
/* Get prepared for readdir */
if((dirent_array =
(cache_inode_dir_entry_t **) Mem_Alloc(
estimated_num_entries * sizeof(cache_inode_dir_entry_t*))) == NULL)
{
res_READDIR4.status = NFS4ERR_SERVERFAULT;
goto out;
}
/* Perform the readdir operation */
if(cache_inode_readdir(dir_pentry,
data->pexport->cache_inode_policy,
cookie,
estimated_num_entries,
&num_entries,
&end_cookie,
&eod_met,
dirent_array,
data->ht,
&dir_pentry_unlock,
data->pclient,
data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
{
res_READDIR4.status = nfs4_Errno(cache_status);
goto out;
}
/* For an empty directory, we will find only . and .., so reply as if the
* end is reached */
if(num_entries == 0)
{
/* only . and .. */
res_READDIR4.READDIR4res_u.resok4.reply.entries = NULL;
res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE;
memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
NFS4_VERIFIER_SIZE);
}
else
{
/* Start computing the outbuffsize */
outbuffsize = sizeof( bool_t) /* eof */
+ sizeof( nfsstat4 ) /* READDIR4res::status */
+ NFS4_VERIFIER_SIZE /* cookie verifier */ ;
/* Allocation of reply structures */
if((entry_name_array =
(entry_name_array_item_t *) Mem_Alloc(num_entries *
(FSAL_MAX_NAME_LEN + 1)))
== NULL)
{
LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno);
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
memset((char *)entry_name_array, 0,
num_entries * (FSAL_MAX_NAME_LEN + 1));
if((entry_nfs_array = (entry4 *) Mem_Alloc(num_entries * sizeof(entry4)))
== NULL)
{
LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno);
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
memset((char *)entry_nfs_array, 0, num_entries * sizeof(entry4));
for(i = 0; i < num_entries; i++)
{
entry_nfs_array[i].name.utf8string_val = entry_name_array[i];
if(str2utf8(dirent_array[i]->name.name,
&entry_nfs_array[i].name) == -1)
{
res_READDIR4.status = NFS4ERR_SERVERFAULT;
goto out;
}
/* Set the cookie value */
entry_nfs_array[i].cookie = dirent_array[i]->cookie;
/* Get the pentry for the object's attributes and filehandle */
if( ( pentry = cache_inode_lookup_no_mutex( dir_pentry,
&dirent_array[i]->name,
data->pexport->cache_inode_policy,
&attrlookup,
data->ht,
data->pclient,
data->pcontext,
&cache_status ) ) == NULL )
{
Mem_Free((char *)entry_nfs_array);
/* Return the fattr4_rdattr_error , cf RFC3530, page 192 */
entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap;
entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals;
res_READDIR4.status = NFS4ERR_SERVERFAULT;
goto out;
}
/* If file handle is asked in the attributes, provide it */
if(arg_READDIR4.attr_request.bitmap4_val != NULL
&& (arg_READDIR4.attr_request.bitmap4_val[0] & FATTR4_FILEHANDLE))
{
if((entry_FSALhandle =
cache_inode_get_fsal_handle(pentry,
&cache_status_attr)) == NULL)
{
/* Faulty Handle or pentry */
Mem_Free((char *)entry_nfs_array);
res_READDIR4.status = NFS4ERR_SERVERFAULT;
goto out;
}
if(!nfs4_FSALToFhandle(&entryFH, entry_FSALhandle, data))
{
/* Faulty type */
Mem_Free((char *)entry_nfs_array);
res_READDIR4.status = NFS4ERR_SERVERFAULT;
goto out;
}
}
if(nfs4_FSALattr_To_Fattr(data->pexport,
&attrlookup,
&(entry_nfs_array[i].attrs),
data, &entryFH, &(arg_READDIR4.attr_request)) != 0)
{
/* Return the fattr4_rdattr_error , cf RFC3530, page 192 */
entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap;
entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals;
}
/* Update the size of the output buffer */
entrysize = sizeof( nfs_cookie4 ) ; /* nfs_cookie4 */
entrysize += sizeof( u_int ) ; /* pathname4::utf8strings_len */
entrysize += entry_nfs_array[i].name.utf8string_len ;
entrysize += sizeof( u_int ) ; /* bitmap4_len */
entrysize += entry_nfs_array[i].attrs.attrmask.bitmap4_len ;
entrysize += sizeof( u_int ) ; /* attrlist4_len */
entrysize += entry_nfs_array[i].attrs.attr_vals.attrlist4_len ;
entrysize += sizeof( caddr_t ) ;
outbuffsize += entrysize;
LogFullDebug(COMPONENT_NFS_V4,
" === nfs4_op_readdir ===> i=%u name=%s cookie=%"PRIu64" "
"entrysize=%u buffsize=%u",
i, dirent_array[i]->name.name,
entry_nfs_array[i].cookie,
entrysize,
outbuffsize);
/* Chain the entries together */
entry_nfs_array[i].nextentry = NULL;
if(i != 0)
{
if( outbuffsize < maxcount )
entry_nfs_array[i - 1].nextentry = &(entry_nfs_array[i]);
else
{
LogFullDebug(COMPONENT_NFS_V4,
"=== nfs4_op_readdir ===> "
"maxcount reached at %u entries name=%s "
"cookie=%llu "
"buffsize=%u (return early)",
i+1,
dirent_array[i]->name.name,
(unsigned long long)entry_nfs_array[i].cookie,
outbuffsize);
entry_nfs_array[i - 1].nextentry = NULL ;
break ;
}
}
} /* for i */
if((i == num_entries) && (eod_met == END_OF_DIR))
{
LogFullDebug(COMPONENT_NFS_V4,
"End of directory reached: num_entries=%d i=%d",
num_entries,
i);
/* This is the end of the directory */
res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE;
memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf,
cookie_verifier, NFS4_VERIFIER_SIZE);
}
/* Put the entry's list in the READDIR reply */
res_READDIR4.READDIR4res_u.resok4.reply.entries = entry_nfs_array;
}
/* Do not forget to set the verifier */
memcpy((char *)res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
NFS4_VERIFIER_SIZE);
res_READDIR4.status = NFS4_OK;
out:
/* release read lock on dir_pentry, if requested */
if (dir_pentry_unlock)
V_r(&dir_pentry->lock);
if (dirent_array)
{
if( !CACHE_INODE_KEEP_CONTENT( dir_pentry->policy ) )
cache_inode_release_dirent( dirent_array, num_entries, data->pclient ) ;
Mem_Free((char *)dirent_array);
}
return res_READDIR4.status;
} /* nfs4_op_readdir */
int nfs4_op_lookup(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
fsal_name_t name;
char strname[MAXNAMLEN];
#ifndef _NO_XATTRD
char objname[MAXNAMLEN];
#endif
unsigned int xattr_found = FALSE;
cache_entry_t *dir_pentry = NULL;
cache_entry_t *file_pentry = NULL;
fsal_attrib_list_t attrlookup;
cache_inode_status_t cache_status;
fsal_handle_t *pfsal_handle = NULL;
char __attribute__ ((__unused__)) funcname[] = "nfs4_op_lookup";
resp->resop = NFS4_OP_LOOKUP;
res_LOOKUP4.status = NFS4_OK;
/* If there is no FH */
if(nfs4_Is_Fh_Empty(&(data->currentFH)))
{
res_LOOKUP4.status = NFS4ERR_NOFILEHANDLE;
return res_LOOKUP4.status;
}
/* If the filehandle is invalid */
if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
{
res_LOOKUP4.status = NFS4ERR_BADHANDLE;
return res_LOOKUP4.status;
}
/* Tests if the Filehandle is expired (for volatile filehandle) */
if(nfs4_Is_Fh_Expired(&(data->currentFH)))
{
res_LOOKUP4.status = NFS4ERR_FHEXPIRED;
return res_LOOKUP4.status;
}
/* Check for empty name */
if(op->nfs_argop4_u.oplookup.objname.utf8string_len == 0 ||
op->nfs_argop4_u.oplookup.objname.utf8string_val == NULL)
{
res_LOOKUP4.status = NFS4ERR_INVAL;
return res_LOOKUP4.status;
}
/* Check for name to long */
if(op->nfs_argop4_u.oplookup.objname.utf8string_len > FSAL_MAX_NAME_LEN)
{
res_LOOKUP4.status = NFS4ERR_NAMETOOLONG;
return res_LOOKUP4.status;
}
/* If Filehandle points to a pseudo fs entry, manage it via pseudofs specific functions */
if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
return nfs4_op_lookup_pseudo(op, data, resp);
#ifndef _NO_XATTRD
/* If Filehandle points to a xattr object, manage it via the xattrs specific functions */
if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
return nfs4_op_lookup_xattr(op, data, resp);
#endif
/* UTF8 strings may not end with \0, but they carry their length */
utf82str(strname, sizeof(strname), &arg_LOOKUP4.objname);
#ifndef _NO_XATTRD
/* Is this a .xattr.d.<object> name ? */
if(nfs_XattrD_Name(strname, objname))
{
strcpy(strname, objname);
xattr_found = TRUE;
}
#endif
if((cache_status = cache_inode_error_convert(FSAL_str2name(strname,
MAXNAMLEN,
&name))) !=
CACHE_INODE_SUCCESS)
{
res_LOOKUP4.status = nfs4_Errno(cache_status);
return res_LOOKUP4.status;
}
/* No 'cd .' is allowed return NFS4ERR_BADNAME in this case */
/* No 'cd .. is allowed, return EINVAL in this case. NFS4_OP_LOOKUPP should be use instead */
if(!FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT)
|| !FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT_DOT))
{
res_LOOKUP4.status = NFS4ERR_BADNAME;
return res_LOOKUP4.status;
}
/* Do the lookup in the HPSS Namespace */
file_pentry = NULL;
dir_pentry = data->current_entry;
/* Sanity check: dir_pentry should be ACTUALLY a directory */
if(dir_pentry->internal_md.type != DIR_BEGINNING
&& dir_pentry->internal_md.type != DIR_CONTINUE)
{
/* This is not a directory */
if(dir_pentry->internal_md.type == SYMBOLIC_LINK)
res_LOOKUP4.status = NFS4ERR_SYMLINK;
else
res_LOOKUP4.status = NFS4ERR_NOTDIR;
/* Return failed status */
return res_LOOKUP4.status;
}
/* BUGAZOMEU: Faire la gestion des cross junction traverse */
if((file_pentry = cache_inode_lookup(dir_pentry,
&name,
&attrlookup,
data->ht,
data->pclient,
data->pcontext, &cache_status)) != NULL)
{
/* Extract the fsal attributes from the cache inode pentry */
pfsal_handle = cache_inode_get_fsal_handle(file_pentry, &cache_status);
if(cache_status != CACHE_INODE_SUCCESS)
{
res_LOOKUP4.status = NFS4ERR_SERVERFAULT;
return res_LOOKUP4.status;
}
/* Convert it to a file handle */
if(!nfs4_FSALToFhandle(&data->currentFH, pfsal_handle, data))
{
res_LOOKUP4.status = NFS4ERR_SERVERFAULT;
return res_LOOKUP4.status;
}
/* Copy this to the mounted on FH (if no junction is traversed */
memcpy((char *)(data->mounted_on_FH.nfs_fh4_val),
(char *)(data->currentFH.nfs_fh4_val), data->currentFH.nfs_fh4_len);
data->mounted_on_FH.nfs_fh4_len = data->currentFH.nfs_fh4_len;
#if 0
print_buff((char *)cache_inode_get_fsal_handle(file_pentry, &cache_status),
sizeof(fsal_handle_t));
print_buff((char *)cache_inode_get_fsal_handle(dir_pentry, &cache_status),
sizeof(fsal_handle_t));
#endif
if(isFullDebug(COMPONENT_NFS_V4))
{
LogFullDebug(COMPONENT_NFS_V4,
"----> nfs4_op_lookup: name=%s dir_pentry=%p looked up pentry=%p",
strname, dir_pentry, file_pentry);
LogFullDebug(COMPONENT_NFS_V4,
"----> FSAL handle parent puis fils dans nfs4_op_lookup");
print_buff(COMPONENT_NFS_V4,
(char *)cache_inode_get_fsal_handle(file_pentry, &cache_status),
sizeof(fsal_handle_t));
print_buff(COMPONENT_NFS_V4,
(char *)cache_inode_get_fsal_handle(dir_pentry, &cache_status),
sizeof(fsal_handle_t));
}
LogHandleNFS4("NFS4 LOOKUP CURRENT FH: ", &data->currentFH);
/* Keep the pointer within the compound data */
data->current_entry = file_pentry;
data->current_filetype = file_pentry->internal_md.type;
/* Return successfully */
res_LOOKUP4.status = NFS4_OK;
#ifndef _NO_XATTRD
/* If this is a xattr ghost directory name, update the FH */
if(xattr_found == TRUE)
res_LOOKUP4.status = nfs4_fh_to_xattrfh(&(data->currentFH), &(data->currentFH));
#endif
if((data->current_entry->internal_md.type == DIR_BEGINNING) &&
(data->current_entry->object.dir_begin.referral != NULL))
{
if(!nfs4_Set_Fh_Referral(&(data->currentFH)))
{
res_LOOKUP4.status = NFS4ERR_SERVERFAULT;
return res_LOOKUP4.status;
}
}
return NFS4_OK;
}
/* If the part of the code is reached, then something wrong occured in the lookup process, status is not HPSS_E_NOERROR
* and contains the code for the error */
res_LOOKUP4.status = nfs4_Errno(cache_status);
return res_LOOKUP4.status;
} /* nfs4_op_lookup */
int nfs4_op_lookupp(struct nfs_argop4 *op,
compound_data_t * data, struct nfs_resop4 *resp)
{
fsal_name_t name;
cache_entry_t *dir_pentry = NULL;
cache_entry_t *file_pentry = NULL;
fsal_attrib_list_t attrlookup;
cache_inode_status_t cache_status;
int error = 0;
fsal_handle_t *pfsal_handle = NULL;
char __attribute__ ((__unused__)) funcname[] = "nfs4_op_lookupp";
resp->resop = NFS4_OP_LOOKUPP;
resp->nfs_resop4_u.oplookupp.status = NFS4_OK;
/* If there is no FH */
if(nfs4_Is_Fh_Empty(&(data->currentFH)))
{
res_LOOKUPP4.status = NFS4ERR_NOFILEHANDLE;
return res_LOOKUPP4.status;
}
/* If the filehandle is invalid */
if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
{
res_LOOKUPP4.status = NFS4ERR_BADHANDLE;
return res_LOOKUPP4.status;
}
/* Tests if the Filehandle is expired (for volatile filehandle) */
if(nfs4_Is_Fh_Expired(&(data->currentFH)))
{
res_LOOKUPP4.status = NFS4ERR_FHEXPIRED;
return res_LOOKUPP4.status;
}
/* looking up for parent directory from ROOTFH return NFS4ERR_NOENT (RFC3530, page 166) */
if(data->currentFH.nfs_fh4_len == data->rootFH.nfs_fh4_len
&& memcmp(data->currentFH.nfs_fh4_val, data->rootFH.nfs_fh4_val,
data->currentFH.nfs_fh4_len) == 0)
{
/* Nothing to do, just reply with success */
res_LOOKUPP4.status = NFS4ERR_NOENT;
return res_LOOKUPP4.status;
}
/* If in pseudoFS, proceed with pseudoFS specific functions */
if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
return nfs4_op_lookupp_pseudo(op, data, resp);
/* If Filehandle points to a xattr object, manage it via the xattrs specific functions */
if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
return nfs4_op_lookupp_xattr(op, data, resp);
/* If data->exportp is null, a junction from pseudo fs was traversed, credp and exportp have to be updated */
if(data->pexport == NULL)
{
if((error = nfs4_SetCompoundExport(data)) != NFS4_OK)
{
res_LOOKUPP4.status = error;
return res_LOOKUPP4.status;
}
}
/* Preparying for cache_inode_lookup ".." */
file_pentry = NULL;
dir_pentry = data->current_entry;
name = FSAL_DOT_DOT;
/* BUGAZOMEU: Faire la gestion des cross junction traverse */
if((file_pentry = cache_inode_lookup(dir_pentry,
&name,
data->pexport->cache_inode_policy,
&attrlookup,
data->ht,
data->pclient,
data->pcontext, &cache_status)) != NULL)
{
/* Extract the fsal attributes from the cache inode pentry */
pfsal_handle = cache_inode_get_fsal_handle(file_pentry, &cache_status);
if(cache_status != CACHE_INODE_SUCCESS)
{
res_LOOKUPP4.status = NFS4ERR_SERVERFAULT;
return res_LOOKUPP4.status;
}
/* Convert it to a file handle */
if(!nfs4_FSALToFhandle(&data->currentFH, pfsal_handle, data))
{
res_LOOKUPP4.status = NFS4ERR_SERVERFAULT;
return res_LOOKUPP4.status;
}
/* Copy this to the mounted on FH (if no junction is traversed */
memcpy((char *)(data->mounted_on_FH.nfs_fh4_val),
(char *)(data->currentFH.nfs_fh4_val), data->currentFH.nfs_fh4_len);
data->mounted_on_FH.nfs_fh4_len = data->currentFH.nfs_fh4_len;
/* Keep the pointer within the compound data */
data->current_entry = file_pentry;
data->current_filetype = file_pentry->internal_md.type;
/* Return successfully */
res_LOOKUPP4.status = NFS4_OK;
return NFS4_OK;
}
/* If the part of the code is reached, then something wrong occured in the lookup process, status is not HPSS_E_NOERROR
* and contains the code for the error */
/* If NFS4ERR_SYMLINK should be returned for a symlink instead of ENOTDIR */
if((cache_status == CACHE_INODE_NOT_A_DIRECTORY) &&
(dir_pentry->internal_md.type == SYMBOLIC_LINK))
res_LOOKUPP4.status = NFS4ERR_SYMLINK;
else
res_LOOKUPP4.status = nfs4_Errno(cache_status);
return res_LOOKUPP4.status;
} /* nfs4_op_lookupp */
int nfs4_op_create(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
cache_entry_t *pentry_parent = NULL;
cache_entry_t *pentry_new = NULL;
fsal_attrib_list_t attr_parent;
fsal_attrib_list_t attr_new;
fsal_attrib_list_t sattr;
fsal_handle_t *pnewfsal_handle = NULL;
nfs_fh4 newfh4;
cache_inode_status_t cache_status;
int convrc = 0;
fsal_accessmode_t mode = 0600;
fsal_name_t name;
cache_inode_create_arg_t create_arg;
char __attribute__ ((__unused__)) funcname[] = "nfs4_op_create";
unsigned int i = 0;
resp->resop = NFS4_OP_CREATE;
res_CREATE4.status = NFS4_OK;
/* If the filehandle is Empty */
if(nfs4_Is_Fh_Empty(&(data->currentFH)))
{
res_CREATE4.status = NFS4ERR_NOFILEHANDLE;
return res_CREATE4.status;
}
/* If the filehandle is invalid */
if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
{
res_CREATE4.status = NFS4ERR_BADHANDLE;
return res_CREATE4.status;
}
/* Tests if the Filehandle is expired (for volatile filehandle) */
if(nfs4_Is_Fh_Expired(&(data->currentFH)))
{
res_CREATE4.status = NFS4ERR_FHEXPIRED;
return res_CREATE4.status;
}
/* Pseudo Fs is explictely a Read-Only File system */
if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
{
res_CREATE4.status = NFS4ERR_ROFS;
return res_CREATE4.status;
}
/* Ask only for supported attributes */
if(!nfs4_Fattr_Supported(&arg_CREATE4.createattrs))
{
res_CREATE4.status = NFS4ERR_ATTRNOTSUPP;
return res_CREATE4.status;
}
/* Do not use READ attr, use WRITE attr */
if(!nfs4_Fattr_Check_Access(&arg_CREATE4.createattrs, FATTR4_ATTR_WRITE))
{
res_CREATE4.status = NFS4ERR_INVAL;
return res_CREATE4.status;
}
/* Check for name to long */
if(arg_CREATE4.objname.utf8string_len > FSAL_MAX_NAME_LEN)
{
res_CREATE4.status = NFS4ERR_NAMETOOLONG;
return res_CREATE4.status;
}
/*
* This operation is used to create a non-regular file,
* this means: - a symbolic link
* - a block device file
* - a character device file
* - a socket file
* - a fifo
* - a directory
*
* You can't use this operation to create a regular file, you have to use NFS4_OP_OPEN for this
*/
/* Convert the UFT8 objname to a regular string */
if(arg_CREATE4.objname.utf8string_len == 0)
{
res_CREATE4.status = NFS4ERR_INVAL;
return res_CREATE4.status;
}
if(utf82str(name.name, &arg_CREATE4.objname) == -1)
{
res_CREATE4.status = NFS4ERR_INVAL;
return res_CREATE4.status;
}
name.len = strlen(name.name);
/* Sanuty check: never create a directory named '.' or '..' */
if(arg_CREATE4.objtype.type == NF4DIR)
{
if(!FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT)
|| !FSAL_namecmp(&name, (fsal_name_t *) & FSAL_DOT_DOT))
{
res_CREATE4.status = NFS4ERR_BADNAME;
return res_CREATE4.status;
}
}
/* Filename should contain not slash */
for(i = 0; i < name.len; i++)
{
if(name.name[i] == '/')
{
res_CREATE4.status = NFS4ERR_BADCHAR;
return res_CREATE4.status;
}
}
/* Convert current FH into a cached entry, the current_pentry (assocated with the current FH will be used for this */
pentry_parent = data->current_entry;
/* The currentFH must point to a directory (objects are always created within a directory) */
if(data->current_filetype != DIR_BEGINNING && data->current_filetype != DIR_CONTINUE)
{
res_CREATE4.status = NFS4ERR_NOTDIR;
return res_CREATE4.status;
}
/* get attributes of parent directory, for 'change4' info replyed */
if((cache_status = cache_inode_getattr(pentry_parent,
&attr_parent,
data->ht,
data->pclient,
data->pcontext,
&cache_status)) != CACHE_INODE_SUCCESS)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
/* Change info for client cache coherency, pentry internal_md is used for that */
memset(&(res_CREATE4.CREATE4res_u.resok4.cinfo.before), 0, sizeof(changeid4));
res_CREATE4.CREATE4res_u.resok4.cinfo.before =
(changeid4) pentry_parent->internal_md.mod_time;
/* Convert the incoming fattr4 to a vattr structure, if such arguments are supplied */
if(arg_CREATE4.createattrs.attrmask.bitmap4_len != 0)
{
/* Arguments were supplied, extract them */
convrc = nfs4_Fattr_To_FSAL_attr(&sattr, &(arg_CREATE4.createattrs));
if(convrc == 0)
{
res_CREATE4.status = NFS4ERR_ATTRNOTSUPP;
return res_CREATE4.status;
}
if(convrc == -1)
{
res_CREATE4.status = NFS4ERR_BADXDR;
return res_CREATE4.status;
}
}
/* Create either a symbolic link or a directory */
switch (arg_CREATE4.objtype.type)
{
case NF4LNK:
/* Convert the name to link from into a regular string */
if(arg_CREATE4.objtype.createtype4_u.linkdata.utf8string_len == 0)
{
res_CREATE4.status = NFS4ERR_INVAL;
return res_CREATE4.status;
}
else
{
if(utf82str
(create_arg.link_content.path,
&arg_CREATE4.objtype.createtype4_u.linkdata) == -1)
{
res_CREATE4.status = NFS4ERR_INVAL;
return res_CREATE4.status;
}
create_arg.link_content.len = strlen(create_arg.link_content.path);
}
/* do the symlink operation */
if((pentry_new = cache_inode_create(pentry_parent,
&name,
SYMBOLIC_LINK,
mode,
&create_arg,
&attr_new,
data->ht,
data->pclient,
data->pcontext, &cache_status)) == NULL)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
/* If entry exists pentry_new is not null but cache_status was set */
if(cache_status == CACHE_INODE_ENTRY_EXISTS)
{
res_CREATE4.status = NFS4ERR_EXIST;
return res_CREATE4.status;
}
break;
case NF4DIR:
/* Create a new directory */
/* do the symlink operation */
if((pentry_new = cache_inode_create(pentry_parent,
&name,
DIR_BEGINNING,
mode,
&create_arg,
&attr_new,
data->ht,
data->pclient,
data->pcontext, &cache_status)) == NULL)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
/* If entry exists pentry_new is not null but cache_status was set */
if(cache_status == CACHE_INODE_ENTRY_EXISTS)
{
res_CREATE4.status = NFS4ERR_EXIST;
return res_CREATE4.status;
}
break;
case NF4SOCK:
/* Create a new socket file */
if((pentry_new = cache_inode_create(pentry_parent,
&name,
SOCKET_FILE,
mode,
NULL,
&attr_new,
data->ht,
data->pclient,
data->pcontext, &cache_status)) == NULL)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
/* If entry exists pentry_new is not null but cache_status was set */
if(cache_status == CACHE_INODE_ENTRY_EXISTS)
{
res_CREATE4.status = NFS4ERR_EXIST;
return res_CREATE4.status;
}
break;
case NF4FIFO:
/* Create a new socket file */
if((pentry_new = cache_inode_create(pentry_parent,
&name,
FIFO_FILE,
mode,
NULL,
&attr_new,
data->ht,
data->pclient,
data->pcontext, &cache_status)) == NULL)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
/* If entry exists pentry_new is not null but cache_status was set */
if(cache_status == CACHE_INODE_ENTRY_EXISTS)
{
res_CREATE4.status = NFS4ERR_EXIST;
return res_CREATE4.status;
}
break;
case NF4CHR:
create_arg.dev_spec.major = arg_CREATE4.objtype.createtype4_u.devdata.specdata1;
create_arg.dev_spec.minor = arg_CREATE4.objtype.createtype4_u.devdata.specdata2;
/* Create a new socket file */
if((pentry_new = cache_inode_create(pentry_parent,
&name,
CHARACTER_FILE,
mode,
&create_arg,
&attr_new,
data->ht,
data->pclient,
data->pcontext, &cache_status)) == NULL)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
/* If entry exists pentry_new is not null but cache_status was set */
if(cache_status == CACHE_INODE_ENTRY_EXISTS)
{
res_CREATE4.status = NFS4ERR_EXIST;
return res_CREATE4.status;
}
break;
case NF4BLK:
create_arg.dev_spec.major = arg_CREATE4.objtype.createtype4_u.devdata.specdata1;
create_arg.dev_spec.minor = arg_CREATE4.objtype.createtype4_u.devdata.specdata2;
/* Create a new socket file */
if((pentry_new = cache_inode_create(pentry_parent,
&name,
BLOCK_FILE,
mode,
&create_arg,
&attr_new,
data->ht,
data->pclient,
data->pcontext, &cache_status)) == NULL)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
/* If entry exists pentry_new is not null but cache_status was set */
if(cache_status == CACHE_INODE_ENTRY_EXISTS)
{
res_CREATE4.status = NFS4ERR_EXIST;
return res_CREATE4.status;
}
break;
default:
/* Should never happen, but return NFS4ERR_BADTYPE in this case */
res_CREATE4.status = NFS4ERR_BADTYPE;
return res_CREATE4.status;
break;
} /* switch( arg_CREATE4.objtype.type ) */
/* Now produce the filehandle to this file */
if((pnewfsal_handle = cache_inode_get_fsal_handle(pentry_new, &cache_status)) == NULL)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
/* Allocation of a new file handle */
if(nfs4_AllocateFH(&newfh4) != NFS4_OK)
{
res_CREATE4.status = NFS4ERR_SERVERFAULT;
return res_CREATE4.status;
}
/* Building the new file handle */
if(!nfs4_FSALToFhandle(&newfh4, pnewfsal_handle, data))
{
res_CREATE4.status = NFS4ERR_SERVERFAULT;
return res_CREATE4.status;
}
/* This new fh replaces the current FH */
data->currentFH.nfs_fh4_len = newfh4.nfs_fh4_len;
memcpy(data->currentFH.nfs_fh4_val, newfh4.nfs_fh4_val, newfh4.nfs_fh4_len);
/* No do not need newfh any more */
Mem_Free((char *)newfh4.nfs_fh4_val);
/* Set the mode if requested */
/* Use the same fattr mask for reply, if one attribute was not settable, NFS4ERR_ATTRNOTSUPP was replyied */
res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_len =
arg_CREATE4.createattrs.attrmask.bitmap4_len;
if(arg_CREATE4.createattrs.attrmask.bitmap4_len != 0)
{
if((cache_status = cache_inode_setattr(pentry_new,
&sattr,
data->ht,
data->pclient,
data->pcontext,
&cache_status)) != CACHE_INODE_SUCCESS)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
/* Allocate a new bitmap */
res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_val =
(unsigned int *)Mem_Alloc(res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_len *
sizeof(u_int));
if(res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_val == NULL)
{
res_CREATE4.status = NFS4ERR_SERVERFAULT;
return res_CREATE4.status;
}
memset(res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_val, 0,
res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_len);
memcpy(res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_val,
arg_CREATE4.createattrs.attrmask.bitmap4_val,
res_CREATE4.CREATE4res_u.resok4.attrset.bitmap4_len * sizeof(u_int));
}
/* Get the change info on parent directory after the operation was successfull */
if((cache_status = cache_inode_getattr(pentry_parent,
&attr_parent,
data->ht,
data->pclient,
data->pcontext,
&cache_status)) != CACHE_INODE_SUCCESS)
{
res_CREATE4.status = nfs4_Errno(cache_status);
return res_CREATE4.status;
}
memset(&(res_CREATE4.CREATE4res_u.resok4.cinfo.after), 0, sizeof(changeid4));
res_CREATE4.CREATE4res_u.resok4.cinfo.after =
(changeid4) pentry_parent->internal_md.mod_time;
/* Operation is supposed to be atomic .... */
res_CREATE4.CREATE4res_u.resok4.cinfo.atomic = TRUE;
LogFullDebug(COMPONENT_NFS_V4, " CREATE CINFO before = %llu after = %llu atomic = %d\n",
res_CREATE4.CREATE4res_u.resok4.cinfo.before,
res_CREATE4.CREATE4res_u.resok4.cinfo.after,
res_CREATE4.CREATE4res_u.resok4.cinfo.atomic);
/* @todo : BUGAZOMEU: fair ele free dans cette fonction */
/* Keep the vnode entry for the file in the compound data */
data->current_entry = pentry_new;
data->current_filetype = pentry_new->internal_md.type;
/* If you reach this point, then no error occured */
res_CREATE4.status = NFS4_OK;
return res_CREATE4.status;
} /* nfs4_op_create */
int nfs4_op_lookup(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
/* Convenient alias for the arguments */
LOOKUP4args * const arg_LOOKUP4 = &op->nfs_argop4_u.oplookup;
/* Convenient alias for the response */
LOOKUP4res * const res_LOOKUP4 = &resp->nfs_resop4_u.oplookup;
/* The name to look up */
char *name = NULL;
/* The directory in which to look up the name */
struct fsal_obj_handle *dir_obj = NULL;
/* The name found */
struct fsal_obj_handle *file_obj = NULL;
/* Status code from fsal */
fsal_status_t status = {0, 0};
resp->resop = NFS4_OP_LOOKUP;
res_LOOKUP4->status = NFS4_OK;
/* Do basic checks on a filehandle */
res_LOOKUP4->status = nfs4_sanity_check_FH(data, DIRECTORY, false);
if (res_LOOKUP4->status != NFS4_OK) {
/* for some reason lookup is picky. Just not being
* dir is not enough. We want to know it is a symlink
*/
if (res_LOOKUP4->status == NFS4ERR_NOTDIR
&& data->current_filetype == SYMBOLIC_LINK)
res_LOOKUP4->status = NFS4ERR_SYMLINK;
goto out;
}
/* Validate and convert the UFT8 objname to a regular string */
res_LOOKUP4->status = nfs4_utf8string2dynamic(&arg_LOOKUP4->objname,
UTF8_SCAN_ALL,
&name);
if (res_LOOKUP4->status != NFS4_OK)
goto out;
LogDebug(COMPONENT_NFS_V4, "name=%s", name);
/* Do the lookup in the FSAL */
file_obj = NULL;
dir_obj = data->current_obj;
/* Sanity check: dir_obj should be ACTUALLY a directory */
status = fsal_lookup(dir_obj, name, &file_obj, NULL);
if (FSAL_IS_ERROR(status)) {
res_LOOKUP4->status = nfs4_Errno_status(status);
goto out;
}
if (file_obj->type == DIRECTORY) {
PTHREAD_RWLOCK_rdlock(&file_obj->state_hdl->state_lock);
if (file_obj->state_hdl->dir.junction_export != NULL) {
/* Handle junction */
struct fsal_obj_handle *obj = NULL;
/* Attempt to get a reference to the export across the
* junction.
*/
if (!export_ready(
file_obj->state_hdl->dir.junction_export)) {
/* If we could not get a reference, return
* stale. Release state_lock
*/
LogDebug(COMPONENT_EXPORT,
"NFS4ERR_STALE on LOOKUP of %s", name);
res_LOOKUP4->status = NFS4ERR_STALE;
PTHREAD_RWLOCK_unlock(
&file_obj->state_hdl->state_lock);
goto out;
}
get_gsh_export_ref(
file_obj->state_hdl->dir.junction_export);
/* Release any old export reference */
if (op_ctx->ctx_export != NULL)
put_gsh_export(op_ctx->ctx_export);
/* Stash the new export in the compound data. */
op_ctx->ctx_export =
file_obj->state_hdl->dir.junction_export;
op_ctx->fsal_export = op_ctx->ctx_export->fsal_export;
PTHREAD_RWLOCK_unlock(&file_obj->state_hdl->state_lock);
/* Build credentials */
res_LOOKUP4->status =
nfs4_export_check_access(data->req);
/* Test for access error (export should not be visible).
*/
if (res_LOOKUP4->status == NFS4ERR_ACCESS) {
/* If return is NFS4ERR_ACCESS then this client
* doesn't have access to this export, return
* NFS4ERR_NOENT to hide it. It was not visible
* in READDIR response.
*/
LogDebug(COMPONENT_EXPORT,
"NFS4ERR_ACCESS Hiding Export_Id %d Pseudo %s with NFS4ERR_NOENT",
op_ctx->ctx_export->export_id,
op_ctx->ctx_export->pseudopath);
res_LOOKUP4->status = NFS4ERR_NOENT;
goto out;
}
if (res_LOOKUP4->status == NFS4ERR_WRONGSEC) {
/* LogInfo already documents why */
goto out;
}
if (res_LOOKUP4->status != NFS4_OK) {
/* Should never get here,
* nfs4_export_check_access can only return
* NFS4_OK, NFS4ERR_ACCESS or NFS4ERR_WRONGSEC.
*/
LogMajor(COMPONENT_EXPORT,
"PSEUDO FS JUNCTION TRAVERSAL: Failed with %s for %s, id=%d",
nfsstat4_to_str(res_LOOKUP4->status),
op_ctx->ctx_export->pseudopath,
op_ctx->ctx_export->export_id);
goto out;
}
status = nfs_export_get_root_entry(op_ctx->ctx_export,
&obj);
if (FSAL_IS_ERROR(status)) {
LogMajor(COMPONENT_EXPORT,
"PSEUDO FS JUNCTION TRAVERSAL: Failed to get root for %s, id=%d, status = %s",
op_ctx->ctx_export->pseudopath,
op_ctx->ctx_export->export_id,
msg_fsal_err(status.major));
res_LOOKUP4->status = nfs4_Errno_status(status);
goto out;
}
LogDebug(COMPONENT_EXPORT,
"PSEUDO FS JUNCTION TRAVERSAL: Crossed to %s, id=%d for name=%s",
op_ctx->ctx_export->pseudopath,
op_ctx->ctx_export->export_id, name);
file_obj->obj_ops->put_ref(file_obj);
file_obj = obj;
} else {
PTHREAD_RWLOCK_unlock(&file_obj->state_hdl->state_lock);
}
}
/* Convert it to a file handle */
if (!nfs4_FSALToFhandle(false, &data->currentFH, file_obj,
op_ctx->ctx_export)) {
res_LOOKUP4->status = NFS4ERR_SERVERFAULT;
goto out;
}
/* Keep the pointer within the compound data */
set_current_entry(data, file_obj);
/* Put our ref */
file_obj->obj_ops->put_ref(file_obj);
file_obj = NULL;
/* Return successfully */
res_LOOKUP4->status = NFS4_OK;
out:
/* Release reference on file_obj if we didn't utilze it. */
if (file_obj)
file_obj->obj_ops->put_ref(file_obj);
gsh_free(name);
return res_LOOKUP4->status;
} /* nfs4_op_lookup */
int nfs41_op_open(struct nfs_argop4 *op, compound_data_t * data, struct nfs_resop4 *resp)
{
cache_entry_t *pentry_parent = NULL;
cache_entry_t *pentry_lookup = NULL;
cache_entry_t *pentry_newfile = NULL;
fsal_handle_t *pnewfsal_handle = NULL;
fsal_attrib_list_t attr_parent;
fsal_attrib_list_t attr;
fsal_attrib_list_t attr_newfile;
fsal_attrib_list_t sattr;
fsal_openflags_t openflags = 0;
cache_inode_status_t cache_status;
nfsstat4 rc;
int retval;
fsal_name_t filename;
bool_t AttrProvided = FALSE;
fsal_accessmode_t mode = 0600;
nfs_fh4 newfh4;
nfs_client_id_t nfs_clientid;
nfs_worker_data_t *pworker = NULL;
int convrc = 0;
char __attribute__ ((__unused__)) funcname[] = "nfs4_op_open";
cache_inode_state_data_t candidate_data;
cache_inode_state_type_t candidate_type;
cache_inode_state_t *pfile_state = NULL;
cache_inode_state_t *pstate_found_iterate = NULL;
cache_inode_state_t *pstate_previous_iterate = NULL;
cache_inode_state_t *pstate_found_same_owner = NULL;
cache_inode_open_owner_name_t owner_name;
cache_inode_open_owner_name_t *powner_name = NULL;
cache_inode_open_owner_t *powner = NULL;
bool_t open_owner_known = FALSE;
resp->resop = NFS4_OP_OPEN;
res_OPEN4.status = NFS4_OK;
uint32_t tmp_attr[2];
uint_t tmp_int = 2;
int pnfs_status;
cache_inode_create_arg_t create_arg;
pworker = (nfs_worker_data_t *) data->pclient->pworker;
/* If there is no FH */
if(nfs4_Is_Fh_Empty(&(data->currentFH)))
{
res_OPEN4.status = NFS4ERR_NOFILEHANDLE;
return res_OPEN4.status;
}
/* If the filehandle is invalid */
if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
{
res_OPEN4.status = NFS4ERR_BADHANDLE;
return res_OPEN4.status;
}
/* Tests if the Filehandle is expired (for volatile filehandle) */
if(nfs4_Is_Fh_Expired(&(data->currentFH)))
{
res_OPEN4.status = NFS4ERR_FHEXPIRED;
return res_OPEN4.status;
}
/* This can't be done on the pseudofs */
if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
{
res_OPEN4.status = NFS4ERR_ROFS;
return res_OPEN4.status;
}
/* If Filehandle points to a xattr object, manage it via the xattrs specific functions */
if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
return nfs4_op_open_xattr(op, data, resp);
/* If data->current_entry is empty, repopulate it */
if(data->current_entry == NULL)
{
if((data->current_entry = nfs_FhandleToCache(NFS_V4,
NULL,
NULL,
&(data->currentFH),
NULL,
NULL,
&(res_OPEN4.status),
&attr,
data->pcontext,
data->pclient,
data->ht, &retval)) == NULL)
{
res_OPEN4.status = NFS4ERR_SERVERFAULT;
return res_OPEN4.status;
}
}
/* Set parent */
pentry_parent = data->current_entry;
/* First switch is based upon claim type */
switch (arg_OPEN4.claim.claim)
{
case CLAIM_DELEGATE_CUR:
case CLAIM_DELEGATE_PREV:
/* Check for name length */
if(arg_OPEN4.claim.open_claim4_u.file.utf8string_len > FSAL_MAX_NAME_LEN)
{
res_OPEN4.status = NFS4ERR_NAMETOOLONG;
return res_OPEN4.status;
}
/* get the filename from the argument, it should not be empty */
if(arg_OPEN4.claim.open_claim4_u.file.utf8string_len == 0)
{
res_OPEN4.status = NFS4ERR_INVAL;
return res_OPEN4.status;
}
res_OPEN4.status = NFS4ERR_NOTSUPP;
return res_OPEN4.status;
break;
case CLAIM_NULL:
/* Check for name length */
if(arg_OPEN4.claim.open_claim4_u.file.utf8string_len > FSAL_MAX_NAME_LEN)
{
res_OPEN4.status = NFS4ERR_NAMETOOLONG;
return res_OPEN4.status;
}
/* get the filename from the argument, it should not be empty */
if(arg_OPEN4.claim.open_claim4_u.file.utf8string_len == 0)
{
res_OPEN4.status = NFS4ERR_INVAL;
return res_OPEN4.status;
}
/* Check if asked attributes are correct */
if(arg_OPEN4.openhow.openflag4_u.how.mode == GUARDED4 ||
arg_OPEN4.openhow.openflag4_u.how.mode == UNCHECKED4)
{
if(!nfs4_Fattr_Supported
(&arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createattrs))
{
res_OPEN4.status = NFS4ERR_ATTRNOTSUPP;
return res_OPEN4.status;
}
/* Do not use READ attr, use WRITE attr */
if(!nfs4_Fattr_Check_Access
(&arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createattrs,
FATTR4_ATTR_WRITE))
{
res_OPEN4.status = NFS4ERR_INVAL;
return res_OPEN4.status;
}
}
/* Check if filename is correct */
if((cache_status =
cache_inode_error_convert(FSAL_buffdesc2name
((fsal_buffdesc_t *) & arg_OPEN4.claim.open_claim4_u.
file, &filename))) != CACHE_INODE_SUCCESS)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
/* Check parent */
pentry_parent = data->current_entry;
/* Parent must be a directory */
if((pentry_parent->internal_md.type != DIR_BEGINNING) &&
(pentry_parent->internal_md.type != DIR_CONTINUE))
{
/* Parent object is not a directory... */
if(pentry_parent->internal_md.type == SYMBOLIC_LINK)
res_OPEN4.status = NFS4ERR_SYMLINK;
else
res_OPEN4.status = NFS4ERR_NOTDIR;
return res_OPEN4.status;
}
/* What kind of open is it ? */
LogFullDebug(COMPONENT_NFS_V4,
" OPEN: Claim type = %d Open Type = %d Share Deny = %d Share Access = %d \n",
arg_OPEN4.claim.claim, arg_OPEN4.openhow.opentype, arg_OPEN4.share_deny,
arg_OPEN4.share_access);
/* It this a known client id ? */
LogDebug(COMPONENT_NFS_V4, "OPEN Client id = %llx", arg_OPEN4.owner.clientid);
/* Is this open_owner known ? */
if(!nfs_convert_open_owner(&arg_OPEN4.owner, &owner_name))
{
res_OPEN4.status = NFS4ERR_SERVERFAULT;
return res_OPEN4.status;
}
if(!nfs_open_owner_Get_Pointer(&owner_name, &powner))
{
/* This open owner is not known yet, allocated and set up a new one */
GET_PREALLOC(powner,
data->pclient->pool_open_owner,
data->pclient->nb_pre_state_v4, cache_inode_open_owner_t, next);
GET_PREALLOC(powner_name,
data->pclient->pool_open_owner_name,
data->pclient->nb_pre_state_v4,
cache_inode_open_owner_name_t, next);
if(powner == NULL || powner_name == NULL)
{
res_OPEN4.status = NFS4ERR_SERVERFAULT;
return res_OPEN4.status;
}
memcpy((char *)powner_name, (char *)&owner_name,
sizeof(cache_inode_open_owner_name_t));
/* set up the content of the open_owner */
powner->confirmed = FALSE;
powner->seqid = 1; /* NFSv4.1 specific, initial seqid is 1 */
powner->related_owner = NULL;
powner->next = NULL;
powner->clientid = arg_OPEN4.owner.clientid;
powner->owner_len = arg_OPEN4.owner.owner.owner_len;
memcpy((char *)powner->owner_val, (char *)arg_OPEN4.owner.owner.owner_val,
arg_OPEN4.owner.owner.owner_len);
powner->owner_val[powner->owner_len] = '\0';
pthread_mutex_init(&powner->lock, NULL);
if(!nfs_open_owner_Set(powner_name, powner))
{
res_OPEN4.status = NFS4ERR_SERVERFAULT;
return res_OPEN4.status;
}
}
/* Status of parent directory before the operation */
if((cache_status = cache_inode_getattr(pentry_parent,
&attr_parent,
data->ht,
data->pclient,
data->pcontext,
&cache_status)) != CACHE_INODE_SUCCESS)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
memset(&(res_OPEN4.OPEN4res_u.resok4.cinfo.before), 0, sizeof(changeid4));
res_OPEN4.OPEN4res_u.resok4.cinfo.before =
(changeid4) pentry_parent->internal_md.mod_time;
/* CLient may have provided fattr4 to set attributes at creation time */
if(arg_OPEN4.openhow.openflag4_u.how.mode == GUARDED4 ||
arg_OPEN4.openhow.openflag4_u.how.mode == UNCHECKED4)
{
if(arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createattrs.attrmask.
bitmap4_len != 0)
{
/* Convert fattr4 so nfs4_sattr */
convrc =
nfs4_Fattr_To_FSAL_attr(&sattr,
&(arg_OPEN4.openhow.openflag4_u.how.
createhow4_u.createattrs));
if(convrc == 0)
{
res_OPEN4.status = NFS4ERR_ATTRNOTSUPP;
return res_OPEN4.status;
}
if(convrc == -1)
{
res_OPEN4.status = NFS4ERR_BADXDR;
return res_OPEN4.status;
}
AttrProvided = TRUE;
}
}
/* Second switch is based upon "openhow" */
switch (arg_OPEN4.openhow.opentype)
{
case OPEN4_CREATE:
/* a new file is to be created */
/* Does a file with this name already exist ? */
pentry_lookup = cache_inode_lookup(pentry_parent,
&filename,
&attr_newfile,
data->ht,
data->pclient,
data->pcontext, &cache_status);
if(cache_status != CACHE_INODE_NOT_FOUND)
{
/* if open is UNCHECKED, return NFS4_OK (RFC3530 page 172) */
if(arg_OPEN4.openhow.openflag4_u.how.mode == UNCHECKED4
&& (cache_status == CACHE_INODE_SUCCESS))
{
/* If the file is opened for write, OPEN4 while deny share write access,
* in this case, check caller has write access to the file */
if(arg_OPEN4.share_deny & OPEN4_SHARE_DENY_WRITE)
{
if(cache_inode_access(pentry_lookup,
FSAL_W_OK,
data->ht,
data->pclient,
data->pcontext,
&cache_status) != CACHE_INODE_SUCCESS)
{
res_OPEN4.status = NFS4ERR_ACCESS;
return res_OPEN4.status;
}
openflags = FSAL_O_WRONLY;
}
/* Same check on read: check for readability of a file before opening it for read */
if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_READ)
{
if(cache_inode_access(pentry_lookup,
FSAL_R_OK,
data->ht,
data->pclient,
data->pcontext,
&cache_status) != CACHE_INODE_SUCCESS)
{
res_OPEN4.status = NFS4ERR_ACCESS;
return res_OPEN4.status;
}
openflags = FSAL_O_RDONLY;
}
if(AttrProvided == TRUE) /* Set the attribute if provided */
{
if((cache_status = cache_inode_setattr(pentry_lookup,
&sattr,
data->ht,
data->pclient,
data->pcontext,
&cache_status)) !=
CACHE_INODE_SUCCESS)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
res_OPEN4.OPEN4res_u.resok4.attrset =
arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createattrs.
attrmask;
}
else
res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len = 0;
/* Same check on write */
if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_WRITE)
{
if(cache_inode_access(pentry_lookup,
FSAL_W_OK,
data->ht,
data->pclient,
data->pcontext,
&cache_status) != CACHE_INODE_SUCCESS)
{
res_OPEN4.status = NFS4ERR_ACCESS;
return res_OPEN4.status;
}
openflags = FSAL_O_RDWR;
}
/* Set the state for the related file */
/* Prepare state management structure */
candidate_type = CACHE_INODE_STATE_SHARE;
candidate_data.share.share_deny = arg_OPEN4.share_deny;
candidate_data.share.share_access = arg_OPEN4.share_access;
if(cache_inode_add_state(pentry_lookup,
candidate_type,
&candidate_data,
powner,
data->pclient,
data->pcontext,
&pfile_state,
&cache_status) != CACHE_INODE_SUCCESS)
{
/* Seqid has to be incremented even in this case */
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
res_OPEN4.status = NFS4ERR_SHARE_DENIED;
return res_OPEN4.status;
}
/* Open the file */
if(cache_inode_open_by_name(pentry_parent,
&filename,
pentry_lookup,
data->pclient,
openflags,
data->pcontext,
&cache_status) != CACHE_INODE_SUCCESS)
{
/* Seqid has to be incremented even in this case */
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
res_OPEN4.status = NFS4ERR_SHARE_DENIED;
res_OPEN4.status = NFS4ERR_ACCESS;
return res_OPEN4.status;
}
res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len = 2;
if((res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_val =
(uint32_t *) Mem_Alloc(res_OPEN4.OPEN4res_u.resok4.attrset.
bitmap4_len * sizeof(uint32_t))) == NULL)
{
res_OPEN4.status = NFS4ERR_SERVERFAULT;
return res_OPEN4.status;
}
memset(&(res_OPEN4.OPEN4res_u.resok4.cinfo.after), 0,
sizeof(changeid4));
res_OPEN4.OPEN4res_u.resok4.cinfo.after =
(changeid4) pentry_parent->internal_md.mod_time;
res_OPEN4.OPEN4res_u.resok4.cinfo.atomic = TRUE;
res_OPEN4.OPEN4res_u.resok4.stateid.seqid = pfile_state->seqid;
memcpy(res_OPEN4.OPEN4res_u.resok4.stateid.other,
pfile_state->stateid_other, 12);
/* No delegation */
res_OPEN4.OPEN4res_u.resok4.delegation.delegation_type =
OPEN_DELEGATE_NONE;
res_OPEN4.OPEN4res_u.resok4.rflags = OPEN4_RESULT_LOCKTYPE_POSIX;
/* Now produce the filehandle to this file */
if((pnewfsal_handle =
cache_inode_get_fsal_handle(pentry_lookup, &cache_status)) == NULL)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
/* Allocation of a new file handle */
if((rc = nfs4_AllocateFH(&newfh4)) != NFS4_OK)
{
res_OPEN4.status = rc;
return res_OPEN4.status;
}
/* Building a new fh */
if(!nfs4_FSALToFhandle(&newfh4, pnewfsal_handle, data))
{
res_OPEN4.status = NFS4ERR_SERVERFAULT;
return res_OPEN4.status;
}
/* This new fh replaces the current FH */
data->currentFH.nfs_fh4_len = newfh4.nfs_fh4_len;
memcpy(data->currentFH.nfs_fh4_val, newfh4.nfs_fh4_val,
newfh4.nfs_fh4_len);
data->current_entry = pentry_lookup;
data->current_filetype = REGULAR_FILE;
res_OPEN4.status = NFS4_OK;
return res_OPEN4.status;
}
/* if open is EXCLUSIVE, but verifier is the same, return NFS4_OK (RFC3530 page 173) */
if(arg_OPEN4.openhow.openflag4_u.how.mode == EXCLUSIVE4)
{
if((pentry_lookup != NULL)
&& (pentry_lookup->internal_md.type == REGULAR_FILE))
{
pstate_found_iterate = NULL;
pstate_previous_iterate = NULL;
do
{
cache_inode_state_iterate(pentry_lookup,
&pstate_found_iterate,
pstate_previous_iterate,
data->pclient,
data->pcontext, &cache_status);
if(cache_status == CACHE_INODE_STATE_ERROR)
break;
if(cache_status == CACHE_INODE_INVALID_ARGUMENT)
{
/* Seqid has to be incremented even in this case */
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
res_OPEN4.status = NFS4ERR_INVAL;
return res_OPEN4.status;
}
/* Check is open_owner is the same */
if(pstate_found_iterate != NULL)
{
if((pstate_found_iterate->state_type ==
CACHE_INODE_STATE_SHARE)
&& !memcmp(arg_OPEN4.owner.owner.owner_val,
pstate_found_iterate->powner->owner_val,
pstate_found_iterate->powner->owner_len)
&& !memcmp(pstate_found_iterate->state_data.share.
oexcl_verifier,
arg_OPEN4.openhow.openflag4_u.how.
createhow4_u.createverf, NFS4_VERIFIER_SIZE))
{
/* A former open EXCLUSIVE with same owner and verifier was found, resend it */
res_OPEN4.OPEN4res_u.resok4.stateid.seqid =
pstate_found_iterate->seqid;
memcpy(res_OPEN4.OPEN4res_u.resok4.stateid.other,
pstate_found_iterate->stateid_other, 12);
memset(&(res_OPEN4.OPEN4res_u.resok4.cinfo.after), 0,
sizeof(changeid4));
res_OPEN4.OPEN4res_u.resok4.cinfo.after =
(changeid4) pentry_parent->internal_md.mod_time;
res_OPEN4.OPEN4res_u.resok4.cinfo.atomic = TRUE;
/* No delegation */
res_OPEN4.OPEN4res_u.resok4.delegation.delegation_type =
OPEN_DELEGATE_NONE;
res_OPEN4.OPEN4res_u.resok4.rflags =
OPEN4_RESULT_LOCKTYPE_POSIX;
/* Now produce the filehandle to this file */
if((pnewfsal_handle =
cache_inode_get_fsal_handle(pentry_lookup,
&cache_status)) == NULL)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
/* Allocation of a new file handle */
if((rc = nfs4_AllocateFH(&newfh4)) != NFS4_OK)
{
res_OPEN4.status = rc;
return res_OPEN4.status;
}
/* Building a new fh */
if(!nfs4_FSALToFhandle(&newfh4, pnewfsal_handle, data))
{
res_OPEN4.status = NFS4ERR_SERVERFAULT;
return res_OPEN4.status;
}
/* This new fh replaces the current FH */
data->currentFH.nfs_fh4_len = newfh4.nfs_fh4_len;
memcpy(data->currentFH.nfs_fh4_val, newfh4.nfs_fh4_val,
newfh4.nfs_fh4_len);
data->current_entry = pentry_lookup;
data->current_filetype = REGULAR_FILE;
/* regular exit */
res_OPEN4.status = NFS4_OK;
return res_OPEN4.status;
}
}
/* if( pstate_found_iterate != NULL ) */
pstate_previous_iterate = pstate_found_iterate;
}
while(pstate_found_iterate != NULL);
}
}
/* Managing GUARDED4 mode */
if(cache_status != CACHE_INODE_SUCCESS)
res_OPEN4.status = nfs4_Errno(cache_status);
else
res_OPEN4.status = NFS4ERR_EXIST; /* File already exists */
return res_OPEN4.status;
}
/* if( cache_status != CACHE_INODE_NOT_FOUND ), if file already exists basically */
LogFullDebug(COMPONENT_NFS_V4, " OPEN open.how = %d\n", arg_OPEN4.openhow.openflag4_u.how.mode);
create_arg.use_pnfs = FALSE;
#ifdef _USE_PNFS
/* set the file has "managed via pNFS" */
if(data->pexport->options & EXPORT_OPTION_USE_PNFS)
create_arg.use_pnfs = TRUE;
#endif /* _USE_PNFS */
/* Create the file, if we reach this point, it does not exist, we can create it */
if((pentry_newfile = cache_inode_create(pentry_parent,
&filename,
REGULAR_FILE,
mode,
&create_arg,
&attr_newfile,
data->ht,
data->pclient,
data->pcontext, &cache_status)) == NULL)
{
/* If the file already exists, this is not an error if open mode is UNCHECKED */
if(cache_status != CACHE_INODE_ENTRY_EXISTS)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
else
{
/* If this point is reached, then the file already exists, cache_status == CACHE_INODE_ENTRY_EXISTS and pentry_newfile == NULL
This probably means EXCLUSIVE4 mode is used and verifier matches. pentry_newfile is then set to pentry_lookup */
pentry_newfile = pentry_lookup;
}
}
/* Prepare state management structure */
candidate_type = CACHE_INODE_STATE_SHARE;
candidate_data.share.share_deny = arg_OPEN4.share_deny;
candidate_data.share.share_access = arg_OPEN4.share_access;
candidate_data.share.lockheld = 0;
/* If file is opened under mode EXCLUSIVE4, open verifier should be kept to detect non vicious double open */
if(arg_OPEN4.openhow.openflag4_u.how.mode == EXCLUSIVE4)
{
strncpy(candidate_data.share.oexcl_verifier,
arg_OPEN4.openhow.openflag4_u.how.createhow4_u.createverf,
NFS4_VERIFIER_SIZE);
}
if(cache_inode_add_state(pentry_newfile,
candidate_type,
&candidate_data,
powner,
data->pclient,
data->pcontext,
&pfile_state, &cache_status) != CACHE_INODE_SUCCESS)
{
/* Seqid has to be incremented even in this case */
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
res_OPEN4.status = NFS4ERR_SHARE_DENIED;
return res_OPEN4.status;
}
if(AttrProvided == TRUE) /* Set the attribute if provided */
{
if((cache_status = cache_inode_setattr(pentry_newfile,
&sattr,
data->ht,
data->pclient,
data->pcontext,
&cache_status)) !=
CACHE_INODE_SUCCESS)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
}
/* Set the openflags variable */
if(arg_OPEN4.share_deny & OPEN4_SHARE_DENY_WRITE)
openflags |= FSAL_O_RDONLY;
if(arg_OPEN4.share_deny & OPEN4_SHARE_DENY_READ)
openflags |= FSAL_O_WRONLY;
if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_WRITE)
openflags = FSAL_O_RDWR;
if(arg_OPEN4.share_access != 0)
openflags = FSAL_O_RDWR; /* @todo : BUGAZOMEU : Something better later */
/* Open the file */
if(cache_inode_open_by_name(pentry_parent,
&filename,
pentry_newfile,
data->pclient,
openflags,
data->pcontext,
&cache_status) != CACHE_INODE_SUCCESS)
{
/* Seqid has to be incremented even in this case */
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
res_OPEN4.status = NFS4ERR_ACCESS;
return res_OPEN4.status;
}
break;
case OPEN4_NOCREATE:
/* It was not a creation, but a regular open */
/* The filehandle to the new file replaces the current filehandle */
if(pentry_newfile == NULL)
{
if((pentry_newfile = cache_inode_lookup(pentry_parent,
&filename,
&attr_newfile,
data->ht,
data->pclient,
data->pcontext,
&cache_status)) == NULL)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
}
/* OPEN4 is to be done on a file */
if(pentry_newfile->internal_md.type != REGULAR_FILE)
{
if(pentry_newfile->internal_md.type == DIR_BEGINNING
|| pentry_newfile->internal_md.type == DIR_CONTINUE)
{
res_OPEN4.status = NFS4ERR_ISDIR;
return res_OPEN4.status;
}
else if(pentry_newfile->internal_md.type == SYMBOLIC_LINK)
{
res_OPEN4.status = NFS4ERR_SYMLINK;
return res_OPEN4.status;
}
else
{
res_OPEN4.status = NFS4ERR_INVAL;
return res_OPEN4.status;
}
}
/* If the file is opened for write, OPEN4 while deny share write access,
* in this case, check caller has write access to the file */
if(arg_OPEN4.share_deny & OPEN4_SHARE_DENY_WRITE)
{
if(cache_inode_access(pentry_newfile,
FSAL_W_OK,
data->ht,
data->pclient,
data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
{
res_OPEN4.status = NFS4ERR_ACCESS;
return res_OPEN4.status;
}
openflags = FSAL_O_WRONLY;
}
/* Same check on read: check for readability of a file before opening it for read */
if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_READ)
{
if(cache_inode_access(pentry_newfile,
FSAL_R_OK,
data->ht,
data->pclient,
data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
{
res_OPEN4.status = NFS4ERR_ACCESS;
return res_OPEN4.status;
}
openflags = FSAL_O_RDONLY;
}
/* Same check on write */
if(arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_WRITE)
{
if(cache_inode_access(pentry_newfile,
FSAL_W_OK,
data->ht,
data->pclient,
data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
{
res_OPEN4.status = NFS4ERR_ACCESS;
return res_OPEN4.status;
}
openflags = FSAL_O_RDWR;
}
/* Try to find if the same open_owner already has acquired a stateid for this file */
pstate_found_iterate = NULL;
pstate_previous_iterate = NULL;
do
{
cache_inode_state_iterate(pentry_newfile,
&pstate_found_iterate,
pstate_previous_iterate,
data->pclient, data->pcontext, &cache_status);
if(cache_status == CACHE_INODE_STATE_ERROR)
break; /* Get out of the loop */
if(cache_status == CACHE_INODE_INVALID_ARGUMENT)
{
res_OPEN4.status = NFS4ERR_INVAL;
return res_OPEN4.status;
}
/* Check is open_owner is the same */
if(pstate_found_iterate != NULL)
{
if((pstate_found_iterate->state_type == CACHE_INODE_STATE_SHARE) &&
(pstate_found_iterate->powner->clientid == arg_OPEN4.owner.clientid)
&&
((pstate_found_iterate->powner->owner_len ==
arg_OPEN4.owner.owner.owner_len)
&&
(!memcmp
(arg_OPEN4.owner.owner.owner_val,
pstate_found_iterate->powner->owner_val,
pstate_found_iterate->powner->owner_len))))
{
/* We'll be re-using the found state */
pstate_found_same_owner = pstate_found_iterate;
}
else
{
/* This is a different owner, check for possible conflicts */
if(memcmp(arg_OPEN4.owner.owner.owner_val,
pstate_found_iterate->powner->owner_val,
pstate_found_iterate->powner->owner_len))
{
switch (pstate_found_iterate->state_type)
{
case CACHE_INODE_STATE_SHARE:
if((pstate_found_iterate->state_data.share.
share_access & OPEN4_SHARE_ACCESS_WRITE)
&& (arg_OPEN4.share_deny & OPEN4_SHARE_DENY_WRITE))
{
res_OPEN4.status = NFS4ERR_SHARE_DENIED;
return res_OPEN4.status;
}
break;
}
}
}
/* In all cases opening in read access a read denied file or write access to a write denied file
* should fail, even if the owner is the same, see discussion in 14.2.16 and 8.9 */
if(pstate_found_iterate->state_type == CACHE_INODE_STATE_SHARE)
{
/* deny read access on read denied file */
if((pstate_found_iterate->state_data.share.
share_deny & OPEN4_SHARE_DENY_READ)
&& (arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_READ))
{
/* Seqid has to be incremented even in this case */
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
powner->seqid += 1;
res_OPEN4.status = NFS4ERR_SHARE_DENIED;
return res_OPEN4.status;
}
/* deny write access on write denied file */
if((pstate_found_iterate->state_data.share.
share_deny & OPEN4_SHARE_DENY_WRITE)
&& (arg_OPEN4.share_access & OPEN4_SHARE_ACCESS_WRITE))
{
/* Seqid has to be incremented even in this case */
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
res_OPEN4.status = NFS4ERR_SHARE_DENIED;
return res_OPEN4.status;
}
}
}
/* if( pstate_found_iterate != NULL ) */
pstate_previous_iterate = pstate_found_iterate;
}
while(pstate_found_iterate != NULL);
if(pstate_found_same_owner != NULL)
{
pfile_state = pstate_found_same_owner;
pfile_state->seqid += 1;
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
}
else
{
/* Set the state for the related file */
/* Prepare state management structure */
candidate_type = CACHE_INODE_STATE_SHARE;
candidate_data.share.share_deny = arg_OPEN4.share_deny;
candidate_data.share.share_access = arg_OPEN4.share_access;
if(cache_inode_add_state(pentry_newfile,
candidate_type,
&candidate_data,
powner,
data->pclient,
data->pcontext,
&pfile_state,
&cache_status) != CACHE_INODE_SUCCESS)
{
/* Seqid has to be incremented even in this case */
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
res_OPEN4.status = NFS4ERR_SHARE_DENIED;
return res_OPEN4.status;
}
}
/* Open the file */
if(cache_inode_open_by_name(pentry_parent,
&filename,
pentry_newfile,
data->pclient,
openflags,
data->pcontext,
&cache_status) != CACHE_INODE_SUCCESS)
{
/* Seqid has to be incremented even in this case */
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
res_OPEN4.status = NFS4ERR_ACCESS;
return res_OPEN4.status;
}
break;
default:
/* Seqid has to be incremented even in this case */
if(powner != NULL)
{
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
}
res_OPEN4.status = NFS4ERR_INVAL;
return res_OPEN4.status;
break;
} /* switch( arg_OPEN4.openhow.opentype ) */
break;
case CLAIM_PREVIOUS:
break;
default:
/* Seqid has to be incremented even in this case */
if(powner != NULL)
{
P(powner->lock);
powner->seqid += 1;
V(powner->lock);
}
res_OPEN4.status = NFS4ERR_INVAL;
return res_OPEN4.status;
break;
} /* switch( arg_OPEN4.claim.claim ) */
/* Now produce the filehandle to this file */
if((pnewfsal_handle =
cache_inode_get_fsal_handle(pentry_newfile, &cache_status)) == NULL)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
/* Allocation of a new file handle */
if((rc = nfs4_AllocateFH(&newfh4)) != NFS4_OK)
{
res_OPEN4.status = rc;
return res_OPEN4.status;
}
/* Building a new fh */
if(!nfs4_FSALToFhandle(&newfh4, pnewfsal_handle, data))
{
res_OPEN4.status = NFS4ERR_SERVERFAULT;
return res_OPEN4.status;
}
/* This new fh replaces the current FH */
data->currentFH.nfs_fh4_len = newfh4.nfs_fh4_len;
memcpy(data->currentFH.nfs_fh4_val, newfh4.nfs_fh4_val, newfh4.nfs_fh4_len);
data->current_entry = pentry_newfile;
data->current_filetype = REGULAR_FILE;
/* No do not need newfh any more */
Mem_Free((char *)newfh4.nfs_fh4_val);
/* Status of parent directory after the operation */
if((cache_status = cache_inode_getattr(pentry_parent,
&attr_parent,
data->ht,
data->pclient,
data->pcontext,
&cache_status)) != CACHE_INODE_SUCCESS)
{
res_OPEN4.status = nfs4_Errno(cache_status);
return res_OPEN4.status;
}
res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len = 2;
if((res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_val =
(uint32_t *) Mem_Alloc(res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len *
sizeof(uint32_t))) == NULL)
{
res_OPEN4.status = NFS4ERR_SERVERFAULT;
return res_OPEN4.status;
}
res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_val[0] = 0; /* No Attributes set */
res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_val[1] = 0; /* No Attributes set */
if(arg_OPEN4.openhow.opentype == OPEN4_CREATE)
{
tmp_int = 2;
tmp_attr[0] = FATTR4_SIZE;
tmp_attr[1] = FATTR4_MODE;
nfs4_list_to_bitmap4(&(res_OPEN4.OPEN4res_u.resok4.attrset), &tmp_int, tmp_attr);
res_OPEN4.OPEN4res_u.resok4.attrset.bitmap4_len = 2;
}
res_OPEN4.OPEN4res_u.resok4.cinfo.after =
(changeid4) pentry_parent->internal_md.mod_time;
res_OPEN4.OPEN4res_u.resok4.cinfo.atomic = TRUE;
res_OPEN4.OPEN4res_u.resok4.stateid.seqid = powner->seqid;
memcpy(res_OPEN4.OPEN4res_u.resok4.stateid.other, pfile_state->stateid_other, 12);
/* No delegation */
res_OPEN4.OPEN4res_u.resok4.delegation.delegation_type = OPEN_DELEGATE_NONE;
res_OPEN4.OPEN4res_u.resok4.rflags = OPEN4_RESULT_LOCKTYPE_POSIX;
/* regular exit */
res_OPEN4.status = NFS4_OK;
return res_OPEN4.status;
} /* nfs41_op_open */
/**
* nfs4_op_readdir: The NFS4_OP_READDIR.
*
* Implements the NFS4_OP_READDIR. If fh is a pseudo FH, then call is routed to routine nfs4_op_readdir_pseudo
*
* @param op [IN] pointer to nfs4_op arguments
* @param data [INOUT] Pointer to the compound request's data
* @param resp [IN] Pointer to nfs4_op results
*
* @return NFS4_OK if ok, any other value show an error.
*
*/
int nfs4_op_readdir(struct nfs_argop4 *op,
compound_data_t * data, struct nfs_resop4 *resp)
{
cache_entry_t *dir_pentry = NULL;
cache_entry_t *pentry = NULL;
cache_inode_endofdir_t eod_met;
fsal_attrib_list_t attrlookup;
cache_inode_status_t cache_status;
cache_inode_status_t cache_status_attr;
char __attribute__ ((__unused__)) funcname[] = "nfs4_op_readdir";
unsigned long dircount;
unsigned long maxcount;
entry4 *entry_nfs_array;
cache_inode_dir_entry_t *dirent_array;
verifier4 cookie_verifier;
unsigned int cookie = 0;
unsigned int end_cookie = 0;
unsigned int *cookie_array;
fsal_handle_t *entry_FSALhandle;
nfs_fh4 entryFH;
char val_fh[NFS4_FHSIZE];
entry_name_array_item_t *entry_name_array;
unsigned long space_used;
unsigned int estimated_num_entries;
unsigned int num_entries;
unsigned int i = 0;
bitmap4 RdAttrErrorBitmap;
attrlist4 RdAttrErrorVals;
resp->resop = NFS4_OP_READDIR;
res_READDIR4.status = NFS4_OK;
entryFH.nfs_fh4_len = 0;
entryFH.nfs_fh4_val = val_fh;
/* If there is no FH */
if(nfs4_Is_Fh_Empty(&(data->currentFH)))
{
res_READDIR4.status = NFS4ERR_NOFILEHANDLE;
return res_READDIR4.status;
}
/* If the filehandle is invalid */
if(nfs4_Is_Fh_Invalid(&(data->currentFH)))
{
res_READDIR4.status = NFS4ERR_BADHANDLE;
return res_READDIR4.status;
}
/* Tests if the Filehandle is expired (for volatile filehandle) */
if(nfs4_Is_Fh_Expired(&(data->currentFH)))
{
res_READDIR4.status = NFS4ERR_FHEXPIRED;
return res_READDIR4.status;
}
/* Pseudo Fs management */
if(nfs4_Is_Fh_Pseudo(&(data->currentFH)))
return nfs4_op_readdir_pseudo(op, data, resp);
/* Xattrs management */
if(nfs4_Is_Fh_Xattr(&(data->currentFH)))
return nfs4_op_readdir_xattr(op, data, resp);
/* You can readdir only within a directory */
dir_pentry = data->current_entry;
if(data->current_filetype != DIR_BEGINNING && data->current_filetype != DIR_CONTINUE)
{
res_READDIR4.status = NFS4ERR_NOTDIR;
return res_READDIR4.status;
}
/* get the caracteristic value for readdir operation */
dircount = arg_READDIR4.dircount;
maxcount = arg_READDIR4.maxcount;
cookie = (unsigned int)arg_READDIR4.cookie;
space_used = sizeof(entry4);
/* dircount is considered meaningless by many nfsv4 client (like the CITI one). we use maxcount instead */
estimated_num_entries = maxcount / sizeof(entry4); /* Estimated_num_entries is probably far too big */
LogFullDebug(COMPONENT_NFS_V4,
"--- nfs4_op_readdir ---> dircount=%u maxcount=%u arg_cookie=%llu cookie=%d estimated_num_entries=%u\n",
dircount, maxcount, arg_READDIR4.cookie, cookie, estimated_num_entries);
/* Do not use a cookie of 1 or 2 (reserved values) */
if(cookie == 1 || cookie == 2)
{
res_READDIR4.status = NFS4ERR_BAD_COOKIE;
return res_READDIR4.status;
}
if(cookie != 0)
cookie = cookie - 2; /* 0,1 and 2 are reserved, there is a delta of '3' because of this */
/* Get only attributes that are allowed to be read */
if(!nfs4_Fattr_Check_Access_Bitmap(&arg_READDIR4.attr_request, FATTR4_ATTR_READ))
{
res_READDIR4.status = NFS4ERR_INVAL;
return res_READDIR4.status;
}
/* If maxcount is too short, return NFS4ERR_TOOSMALL */
if(maxcount < sizeof(entry4) || estimated_num_entries == 0)
{
res_READDIR4.status = NFS4ERR_TOOSMALL;
return res_READDIR4.status;
}
/*
* If cookie verifier is used, then an non-trivial value is
* returned to the client This value is the mtime of
* the pentry. If verifier is unused (as in many NFS
* Servers) then only a set of zeros is returned (trivial
* value)
*/
memset(cookie_verifier, 0, NFS4_VERIFIER_SIZE);
if(data->pexport->UseCookieVerifier == 1)
memcpy(cookie_verifier, &dir_pentry->internal_md.mod_time, sizeof(time_t));
/* Cookie delivered by the server and used by the client SHOULD not ne 0, 1 or 2 (cf RFC3530, page192)
* because theses value are reserved for special use.
* 0 - cookie for first READDIR
* 1 - reserved for . on client handside
* 2 - reserved for .. on client handside
* Entries '.' and '..' are not returned also
* For these reason, there will be an offset of 3 between NFS4 cookie and HPSS cookie */
if((cookie != 0) && (data->pexport->UseCookieVerifier == 1))
{
if(memcmp(cookie_verifier, arg_READDIR4.cookieverf, NFS4_VERIFIER_SIZE) != 0)
{
res_READDIR4.status = NFS4ERR_BAD_COOKIE;
return res_READDIR4.status;
}
}
/* The default behaviour is to consider that eof is not reached, the returned values by cache_inode_readdir
* will let us know if eod was reached or not */
res_READDIR4.READDIR4res_u.resok4.reply.eof = FALSE;
/* Get prepared for readdir */
if((dirent_array =
(cache_inode_dir_entry_t *) Mem_Alloc(estimated_num_entries *
sizeof(cache_inode_dir_entry_t))) == NULL)
{
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
if((cookie_array =
(unsigned int *)Mem_Alloc(estimated_num_entries * sizeof(unsigned int))) == NULL)
{
Mem_Free((char *)dirent_array);
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
/* Perform the readdir operation */
if(cache_inode_readdir(dir_pentry,
cookie,
estimated_num_entries,
&num_entries,
&end_cookie,
&eod_met,
dirent_array,
cookie_array,
data->ht,
data->pclient,
data->pcontext, &cache_status) != CACHE_INODE_SUCCESS)
{
res_READDIR4.status = nfs4_Errno(cache_status);
return res_READDIR4.status;
}
/* For an empty directory, we will find only . and .., so reply af if the end if reached */
if(num_entries == 0)
{
/* only . and .. */
res_READDIR4.READDIR4res_u.resok4.reply.entries = NULL;
res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE;
memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
NFS4_VERIFIER_SIZE);
}
else
{
/* Allocation of reply structures */
if((entry_name_array =
(entry_name_array_item_t *) Mem_Alloc(num_entries *
(FSAL_MAX_NAME_LEN + 1))) == NULL)
{
LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno);
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
memset((char *)entry_name_array, 0, num_entries * (FSAL_MAX_NAME_LEN + 1));
if((entry_nfs_array = (entry4 *) Mem_Alloc(num_entries * sizeof(entry4))) == NULL)
{
LogError(COMPONENT_NFS_V4, ERR_SYS, ERR_MALLOC, errno);
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
for(i = 0; i < num_entries; i++)
{
entry_nfs_array[i].name.utf8string_val = entry_name_array[i];
if(str2utf8(dirent_array[i].name.name, &entry_nfs_array[i].name) == -1)
{
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
/* Set the cookie value */
if(i != num_entries - 1)
entry_nfs_array[i].cookie = cookie_array[i + 1] + 2; /* 0, 1 and 2 are reserved */
else
entry_nfs_array[i].cookie = end_cookie + 2;
LogFullDebug(COMPONENT_NFS_V4, " === nfs4_op_readdir ===> i=%d name=%s cookie=%llu\n",
i, dirent_array[i].name.name, entry_nfs_array[i].cookie);
/* Get the pentry for the object's attributes and filehandle */
if((pentry = cache_inode_lookup(dir_pentry,
&dirent_array[i].name,
&attrlookup,
data->ht,
data->pclient,
data->pcontext, &cache_status)) == NULL)
{
Mem_Free((char *)entry_nfs_array);
Mem_Free((char *)dirent_array);
Mem_Free((char *)cookie_array);
/* Return the fattr4_rdattr_error , cf RFC3530, page 192 */
entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap;
entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals;
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
/* If file handle is asked in the attributes, provide it */
if(arg_READDIR4.attr_request.bitmap4_val != NULL
&& (arg_READDIR4.attr_request.bitmap4_val[0] & FATTR4_FILEHANDLE))
{
if((entry_FSALhandle =
cache_inode_get_fsal_handle(pentry, &cache_status_attr)) == NULL)
{
/* Faulty Handle or pentry */
Mem_Free((char *)entry_nfs_array);
Mem_Free((char *)dirent_array);
Mem_Free((char *)cookie_array);
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
if(!nfs4_FSALToFhandle(&entryFH, entry_FSALhandle, data))
{
/* Faulty type */
Mem_Free((char *)entry_nfs_array);
Mem_Free((char *)dirent_array);
Mem_Free((char *)cookie_array);
res_READDIR4.status = NFS4ERR_SERVERFAULT;
return res_READDIR4.status;
}
}
if(nfs4_FSALattr_To_Fattr(data->pexport,
&attrlookup,
&(entry_nfs_array[i].attrs),
data, &entryFH, &(arg_READDIR4.attr_request)) != 0)
{
/* Return the fattr4_rdattr_error , cf RFC3530, page 192 */
entry_nfs_array[i].attrs.attrmask = RdAttrErrorBitmap;
entry_nfs_array[i].attrs.attr_vals = RdAttrErrorVals;
}
/* Chain the entries together */
entry_nfs_array[i].nextentry = NULL;
if(i != 0)
entry_nfs_array[i - 1].nextentry = &(entry_nfs_array[i]);
/* This test is there to avoid going further than the buffer provided by the client
* the factor "9/10" is there for safety. Its value could be change as beta tests will be done */
if((caddr_t)
((caddr_t) (&entry_nfs_array[i]) - (caddr_t) (&entry_nfs_array[0])) >
(caddr_t) (maxcount * 9 / 10))
break;
} /* for i */
if((eod_met == END_OF_DIR) && (i == num_entries))
{
/* This is the end of the directory */
res_READDIR4.READDIR4res_u.resok4.reply.eof = TRUE;
memcpy(res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
NFS4_VERIFIER_SIZE);
}
/* Put the entry's list in the READDIR reply */
res_READDIR4.READDIR4res_u.resok4.reply.entries = entry_nfs_array;
}
/* Do not forget to set the verifier */
memcpy((char *)res_READDIR4.READDIR4res_u.resok4.cookieverf, cookie_verifier,
NFS4_VERIFIER_SIZE);
Mem_Free((char *)dirent_array);
Mem_Free((char *)cookie_array);
res_READDIR4.status = NFS4_OK;
return res_READDIR4.status;
} /* nfs4_op_readdir */
int nfs4_op_putrootfh(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
fsal_status_t status = {0, 0};
struct fsal_obj_handle *file_obj;
PUTROOTFH4res * const res_PUTROOTFH4 = &resp->nfs_resop4_u.opputrootfh;
/* First of all, set the reply to zero to make sure
* it contains no parasite information
*/
memset(resp, 0, sizeof(struct nfs_resop4));
resp->resop = NFS4_OP_PUTROOTFH;
/* Release any old export reference */
if (op_ctx->ctx_export != NULL)
put_gsh_export(op_ctx->ctx_export);
op_ctx->ctx_export = NULL;
op_ctx->fsal_export = NULL;
/* Clear out current entry for now */
set_current_entry(data, NULL);
/* Get the root export of the Pseudo FS */
op_ctx->ctx_export = get_gsh_export_by_pseudo("/", true);
if (op_ctx->ctx_export == NULL) {
LogCrit(COMPONENT_EXPORT,
"Could not get export for Pseudo Root");
res_PUTROOTFH4->status = NFS4ERR_NOENT;
return res_PUTROOTFH4->status;
}
op_ctx->fsal_export = op_ctx->ctx_export->fsal_export;
/* Build credentials */
res_PUTROOTFH4->status = nfs4_export_check_access(data->req);
/* Test for access error (export should not be visible). */
if (res_PUTROOTFH4->status == NFS4ERR_ACCESS) {
/* Client has no access at all */
LogDebug(COMPONENT_EXPORT,
"Client doesn't have access to Pseudo Root");
return res_PUTROOTFH4->status;
}
if (res_PUTROOTFH4->status != NFS4_OK) {
LogMajor(COMPONENT_EXPORT,
"Failed to get FSAL credentials Pseudo Root");
return res_PUTROOTFH4->status;
}
/* Get the Pesudo Root inode of the mounted on export */
status = nfs_export_get_root_entry(op_ctx->ctx_export, &file_obj);
if (FSAL_IS_ERROR(status)) {
LogCrit(COMPONENT_EXPORT,
"Could not get root inode for Pseudo Root");
res_PUTROOTFH4->status = nfs4_Errno_status(status);
return res_PUTROOTFH4->status;
}
LogMidDebug(COMPONENT_EXPORT,
"Root node %p", data->current_obj);
set_current_entry(data, file_obj);
/* Put our ref */
file_obj->obj_ops.put_ref(file_obj);
/* Convert it to a file handle */
if (!nfs4_FSALToFhandle(data->currentFH.nfs_fh4_val == NULL,
&data->currentFH,
data->current_obj,
op_ctx->ctx_export)) {
LogCrit(COMPONENT_EXPORT,
"Could not get handle for Pseudo Root");
res_PUTROOTFH4->status = NFS4ERR_SERVERFAULT;
return res_PUTROOTFH4->status;
}
LogHandleNFS4("NFS4 PUTROOTFH CURRENT FH: ", &data->currentFH);
res_PUTROOTFH4->status = NFS4_OK;
return res_PUTROOTFH4->status;
} /* nfs4_op_putrootfh */
/**
* @brief NFS4_OP_LOOKUPP
*
* This function implements the NFS4_OP_LOOKUPP operation, which looks
* up the parent of the supplied directory.
*
* @param[in] op Arguments for nfs4_op
* @param[in,out] data Compound request's data
* @param[out] resp Results for nfs4_op
*
* @return per RFC5661, p. 369
*
*/
int nfs4_op_lookupp(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
LOOKUPP4res * const res_LOOKUPP4 = &resp->nfs_resop4_u.oplookupp;
struct fsal_obj_handle *dir_obj = NULL;
struct fsal_obj_handle *file_obj;
struct fsal_obj_handle *root_obj;
fsal_status_t status;
struct gsh_export *original_export = op_ctx->ctx_export;
resp->resop = NFS4_OP_LOOKUPP;
res_LOOKUPP4->status = NFS4_OK;
/* Do basic checks on a filehandle */
res_LOOKUPP4->status = nfs4_sanity_check_FH(data, DIRECTORY, false);
if (res_LOOKUPP4->status != NFS4_OK)
return res_LOOKUPP4->status;
/* Preparing for cache_inode_lookup ".." */
file_obj = NULL;
dir_obj = data->current_obj;
/* If Filehandle points to the root of the current export, then backup
* through junction into the containing export.
*/
if (data->current_obj->type != DIRECTORY)
goto not_junction;
PTHREAD_RWLOCK_rdlock(&original_export->lock);
status = nfs_export_get_root_entry(original_export, &root_obj);
if (FSAL_IS_ERROR(status)) {
res_LOOKUPP4->status = nfs4_Errno_status(status);
PTHREAD_RWLOCK_unlock(&original_export->lock);
return res_LOOKUPP4->status;
}
if (data->current_obj == root_obj) {
struct gsh_export *parent_exp = NULL;
/* Handle reverse junction */
LogDebug(COMPONENT_EXPORT,
"Handling reverse junction from Export_Id %d Path %s Parent=%p",
original_export->export_id,
original_export->fullpath,
original_export->exp_parent_exp);
if (original_export->exp_parent_exp == NULL) {
/* lookupp on the root on the pseudofs should return
* NFS4ERR_NOENT (RFC3530, page 166)
*/
PTHREAD_RWLOCK_unlock(&original_export->lock);
res_LOOKUPP4->status = NFS4ERR_NOENT;
return res_LOOKUPP4->status;
}
PTHREAD_RWLOCK_unlock(&original_export->lock);
/* Clear out data->current entry outside lock
* so if it cascades into cleanup, we aren't holding
* an export lock that would cause trouble.
*/
set_current_entry(data, NULL);
/* We need to protect accessing the parent information
* with the export lock. We use the current export's lock
* which is plenty, the parent can't go away without
* grabbing the current export's lock to clean out the
* parent information.
*/
PTHREAD_RWLOCK_rdlock(&original_export->lock);
/* Get the junction inode into dir_obj and parent_exp
* for reference.
*/
dir_obj = original_export->exp_junction_obj;
parent_exp = original_export->exp_parent_exp;
/* Check if there is a problem with the export and try and
* get a reference to the parent export.
*/
if (dir_obj == NULL || parent_exp == NULL ||
!export_ready(parent_exp)) {
/* Export is in the process of dying */
PTHREAD_RWLOCK_unlock(&original_export->lock);
LogCrit(COMPONENT_EXPORT,
"Reverse junction from Export_Id %d Path %s Parent=%p is stale",
original_export->export_id,
original_export->fullpath,
parent_exp);
res_LOOKUPP4->status = NFS4ERR_STALE;
return res_LOOKUPP4->status;
}
get_gsh_export_ref(parent_exp);
dir_obj->obj_ops.get_ref(dir_obj);
/* Set up dir_obj as current obj with an LRU reference
* while still holding the lock.
*/
set_current_entry(data, dir_obj);
/* Put our ref */
dir_obj->obj_ops.put_ref(dir_obj);
/* Stash parent export in opctx while still holding the lock.
*/
op_ctx->ctx_export = parent_exp;
op_ctx->fsal_export = op_ctx->ctx_export->fsal_export;
/* Now we are safely transitioned to the parent export and can
* release the lock.
*/
PTHREAD_RWLOCK_unlock(&original_export->lock);
/* Release old export reference that was held by opctx. */
put_gsh_export(original_export);
/* Build credentials */
res_LOOKUPP4->status = nfs4_export_check_access(data->req);
/* Test for access error (export should not be visible). */
if (res_LOOKUPP4->status == NFS4ERR_ACCESS) {
/* If return is NFS4ERR_ACCESS then this client doesn't
* have access to this export, return NFS4ERR_NOENT to
* hide it. It was not visible in READDIR response.
*/
LogDebug(COMPONENT_EXPORT,
"NFS4ERR_ACCESS Hiding Export_Id %d Path %s with NFS4ERR_NOENT",
parent_exp->export_id,
parent_exp->fullpath);
res_LOOKUPP4->status = NFS4ERR_NOENT;
return res_LOOKUPP4->status;
}
} else {
/* Release the lock taken above */
PTHREAD_RWLOCK_unlock(&original_export->lock);
}
/* Return our ref from above */
root_obj->obj_ops.put_ref(root_obj);
not_junction:
status = fsal_lookupp(dir_obj, &file_obj, NULL);
if (file_obj != NULL) {
/* Convert it to a file handle */
if (!nfs4_FSALToFhandle(false, &data->currentFH,
file_obj,
op_ctx->ctx_export)) {
res_LOOKUPP4->status = NFS4ERR_SERVERFAULT;
file_obj->obj_ops.put_ref(file_obj);
return res_LOOKUPP4->status;
}
/* Keep the pointer within the compound data */
set_current_entry(data, file_obj);
/* Put our ref */
file_obj->obj_ops.put_ref(file_obj);
/* Return successfully */
res_LOOKUPP4->status = NFS4_OK;
} else {
/* Unable to look up parent for some reason.
* Return error.
*/
set_current_entry(data, NULL);
res_LOOKUPP4->status = nfs4_Errno_status(status);
}
return res_LOOKUPP4->status;
} /* nfs4_op_lookupp */