Exemple #1
0
/*
 *	mdopen() -- Open the specified relation.  ereport's on failure.
 *		(Optionally, can return NULL instead of ereport for ENOENT.)
 *
 * Note we only open the first segment, when there are multiple segments.
 */
static MdfdVec *
mdopen(SMgrRelation reln, bool allowNotFound)
{
	MdfdVec    *mdfd;
	char	   *path;
	File		fd;

	/* No work if already open */
	if (reln->md_fd)
		return reln->md_fd;

	path = relpath(reln->smgr_rnode);

	fd = PathNameOpenFile(path, O_RDWR | PG_BINARY, 0600);

	if (fd < 0)
	{
		/*
		 * During bootstrap, there are cases where a system relation will be
		 * accessed (by internal backend processes) before the bootstrap
		 * script nominally creates it.  Therefore, accept mdopen() as a
		 * substitute for mdcreate() in bootstrap mode only. (See mdcreate)
		 */
		if (IsBootstrapProcessingMode())
			fd = PathNameOpenFile(path, O_RDWR | O_CREAT | O_EXCL | PG_BINARY, 0600);
		if (fd < 0)
		{
			pfree(path);
			if (allowNotFound && errno == ENOENT)
				return NULL;
			ereport(ERROR,
					(errcode_for_file_access(),
					 errmsg("could not open relation %u/%u/%u: %m",
							reln->smgr_rnode.spcNode,
							reln->smgr_rnode.dbNode,
							reln->smgr_rnode.relNode)));
		}
	}

	pfree(path);

	reln->md_fd = mdfd = _fdvec_alloc();

	mdfd->mdfd_vfd = fd;
	mdfd->mdfd_segno = 0;
#ifndef LET_OS_MANAGE_FILESIZE
	mdfd->mdfd_chain = NULL;
	Assert(_mdnblocks(fd, BLCKSZ) <= ((BlockNumber) RELSEG_SIZE));
#endif

	return mdfd;
}
Exemple #2
0
/*
 *	mdopen() -- Open the specified relation.
 *
 * Note we only open the first segment, when there are multiple segments.
 *
 * If first segment is not present, either ereport or return NULL according
 * to "behavior".  We treat EXTENSION_CREATE the same as EXTENSION_FAIL;
 * EXTENSION_CREATE means it's OK to extend an existing relation, not to
 * invent one out of whole cloth.
 */
static MdfdVec *
mdopen(SMgrRelation reln, ForkNumber forknum, ExtensionBehavior behavior)
{
	MdfdVec    *mdfd;
	char	   *path;
	File		fd;

	/* No work if already open */
	if (reln->md_fd[forknum])
		return reln->md_fd[forknum];

	path = relpath(reln->smgr_rnode, forknum);

	fd = PathNameOpenFile(path, O_RDWR | PG_BINARY, 0600);

	if (fd < 0)
	{
		/*
		 * During bootstrap, there are cases where a system relation will be
		 * accessed (by internal backend processes) before the bootstrap
		 * script nominally creates it.  Therefore, accept mdopen() as a
		 * substitute for mdcreate() in bootstrap mode only. (See mdcreate)
		 */
		if (IsBootstrapProcessingMode())
			fd = PathNameOpenFile(path, O_RDWR | O_CREAT | O_EXCL | PG_BINARY, 0600);
		if (fd < 0)
		{
			if (behavior == EXTENSION_RETURN_NULL &&
				FILE_POSSIBLY_DELETED(errno))
			{
				pfree(path);
				return NULL;
			}
			ereport(ERROR,
					(errcode_for_file_access(),
					 errmsg("could not open file \"%s\": %m", path)));
		}
	}

	pfree(path);

	reln->md_fd[forknum] = mdfd = _fdvec_alloc();

	mdfd->mdfd_vfd = fd;
	mdfd->mdfd_segno = 0;
	mdfd->mdfd_chain = NULL;
	Assert(_mdnblocks(reln, forknum, mdfd) <= ((BlockNumber) RELSEG_SIZE));

	return mdfd;
}
Exemple #3
0
/*
 *	mdcreate() -- Create a new relation on magnetic disk.
 *
 * If isRedo is true, it's okay for the relation to exist already.
 */
bool
mdcreate(SMgrRelation reln, bool isRedo)
{
	char	   *path;
	File		fd;

	if (isRedo && reln->md_fd != NULL)
		return true;			/* created and opened already... */

	Assert(reln->md_fd == NULL);

	path = relpath(reln->smgr_rnode);

	fd = PathNameOpenFile(path, O_RDWR | O_CREAT | O_EXCL | PG_BINARY, 0600);

	if (fd < 0)
	{
		int			save_errno = errno;

		/*
		 * During bootstrap, there are cases where a system relation will be
		 * accessed (by internal backend processes) before the bootstrap
		 * script nominally creates it.  Therefore, allow the file to exist
		 * already, even if isRedo is not set.	(See also mdopen)
		 */
		if (isRedo || IsBootstrapProcessingMode())
			fd = PathNameOpenFile(path, O_RDWR | PG_BINARY, 0600);
		if (fd < 0)
		{
			pfree(path);
			/* be sure to return the error reported by create, not open */
			errno = save_errno;
			return false;
		}
		errno = 0;
	}

	pfree(path);

	reln->md_fd = _fdvec_alloc();

	reln->md_fd->mdfd_vfd = fd;
	reln->md_fd->mdfd_segno = 0;
#ifndef LET_OS_MANAGE_FILESIZE
	reln->md_fd->mdfd_chain = NULL;
#endif

	return true;
}
/*
 * Do open the next segment file to read, but don't do error processing.
 *
 */
static File ParquetStorageRead_DoOpenFile(ParquetStorageRead *storageRead,
		char *filePathName) {
	int fileFlags = O_RDONLY | PG_BINARY;
	int fileMode = 0400; /* File mode is S_IRUSR 00400 user has read permission */

	File file;

	Assert(storageRead != NULL);
	Assert(storageRead->isActive);
	Assert(filePathName != NULL);

	if (Debug_appendonly_print_read_block) {
		elog(
				LOG,
				"Parquet storage read: opening table '%s', segment file '%s', fileFlags 0x%x, fileMode 0x%x",
				storageRead->relationName,
				storageRead->segmentFileName,
				fileFlags,
				fileMode);
	}
	/*
	 * Open the file for read.
	 */
	file = PathNameOpenFile(filePathName, fileFlags, fileMode);
	return file;
}
/*
 * Do open the next segment file to read, but don't do error processing.
 *
 * This routine is responsible for seeking to the proper
 * read location given the logical EOF.
 */
static File AppendOnlyStorageRead_DoOpenFile(
	AppendOnlyStorageRead		*storageRead,

    char				 		*filePathName)
				/* The name of the segment file to open. */
{
	int		fileFlags = O_RDONLY | PG_BINARY;
	int		fileMode = 0400;
						/* File mode is S_IRUSR 00400 user has read permission */

	File	file;

	Assert(storageRead != NULL);
	Assert(storageRead->isActive);
	Assert(filePathName != NULL);

	elogif(Debug_appendonly_print_read_block, LOG,
			 "Append-Only storage read: opening table '%s', segment file '%s', fileFlags 0x%x, fileMode 0x%x",
			 storageRead->relationName,
			 storageRead->segmentFileName,
			 fileFlags,
			 fileMode);

	/*
	 * Open the file for read.
	 */
	file = PathNameOpenFile(filePathName, fileFlags, fileMode);

	return file;
}
Exemple #6
0
static Oid
lo_import_internal(text *filename, Oid lobjOid)
{
	File		fd;
	int			nbytes,
				tmp;
	char		buf[BUFSIZE];
	char		fnamebuf[MAXPGPATH];
	LargeObjectDesc *lobj;
	Oid			oid;

#ifndef ALLOW_DANGEROUS_LO_FUNCTIONS
	if (!superuser())
		ereport(ERROR,
				(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
				 errmsg("must be superuser to use server-side lo_import()"),
				 errhint("Anyone can use the client-side lo_import() provided by libpq.")));
#endif

	CreateFSContext();

	/*
	 * open the file to be read in
	 */
	text_to_cstring_buffer(filename, fnamebuf, sizeof(fnamebuf));
	fd = PathNameOpenFile(fnamebuf, O_RDONLY | PG_BINARY, S_IRWXU);
	if (fd < 0)
		ereport(ERROR,
				(errcode_for_file_access(),
				 errmsg("could not open server file \"%s\": %m",
						fnamebuf)));

	/*
	 * create an inversion object
	 */
	oid = inv_create(lobjOid);

	/*
	 * read in from the filesystem and write to the inversion object
	 */
	lobj = inv_open(oid, INV_WRITE, fscxt);

	while ((nbytes = FileRead(fd, buf, BUFSIZE)) > 0)
	{
		tmp = inv_write(lobj, buf, nbytes);
		Assert(tmp == nbytes);
	}

	if (nbytes < 0)
		ereport(ERROR,
				(errcode_for_file_access(),
				 errmsg("could not read server file \"%s\": %m",
						fnamebuf)));

	inv_close(lobj);
	FileClose(fd);

	return oid;
}
Exemple #7
0
/*
 *	mdcreate() -- Create a new relation on magnetic disk.
 *
 * If isRedo is true, it's okay for the relation to exist already.
 */
void
mdcreate(SMgrRelation reln, ForkNumber forkNum, bool isRedo)
{
	char	   *path;
	File		fd;

	if (isRedo && reln->md_fd[forkNum] != NULL)
		return;					/* created and opened already... */

	Assert(reln->md_fd[forkNum] == NULL);

	path = relpath(reln->smgr_rnode, forkNum);

	fd = PathNameOpenFile(path, O_RDWR | O_CREAT | O_EXCL | PG_BINARY, 0600);

	if (fd < 0)
	{
		int			save_errno = errno;

		/*
		 * During bootstrap, there are cases where a system relation will be
		 * accessed (by internal backend processes) before the bootstrap
		 * script nominally creates it.  Therefore, allow the file to exist
		 * already, even if isRedo is not set.	(See also mdopen)
		 */
		if (isRedo || IsBootstrapProcessingMode())
			fd = PathNameOpenFile(path, O_RDWR | PG_BINARY, 0600);
		if (fd < 0)
		{
			/* be sure to report the error reported by create, not open */
			errno = save_errno;
			ereport(ERROR,
					(errcode_for_file_access(),
					 errmsg("could not create file \"%s\": %m", path)));
		}
	}

	pfree(path);

	reln->md_fd[forkNum] = _fdvec_alloc();

	reln->md_fd[forkNum]->mdfd_vfd = fd;
	reln->md_fd[forkNum]->mdfd_segno = 0;
	reln->md_fd[forkNum]->mdfd_chain = NULL;
}
Exemple #8
0
static void DatabaseInfo_AddFile(
	DatabaseInfo		 	*info,
	HTAB 					*dbInfoRelHashTable,
	Oid 					tablespace,
	char					*dbDirPath,
	char					*name)
{
	int64 eof;
	int itemCount;
	Oid relfilenode;
	uint32 segmentFileNum;
	char path[MAXPGPATH];
	int	fileFlags = O_RDONLY | PG_BINARY;
	int	fileMode = 0400;
						/* File mode is S_IRUSR 00400 user has read permission */
	File file;

	sprintf(path, "%s/%s", dbDirPath, name);
	
	/*
	 * Open the file for read.
	 */	
	file = PathNameOpenFile(path, fileFlags, fileMode);
	if(file < 0)
	{
		ereport(ERROR,
				(errcode_for_file_access(),
				 errmsg("Could not open segment file '%s'", 
						path)));
	}
	eof = FileSeek(file, 0L, SEEK_END);
	if (eof < 0) {
		ereport(ERROR,
				(errcode_for_file_access(),
				 errmsg("Could not seek to end of file \"%s\" : %m",
						path)));
	}
	FileClose(file);

	itemCount = sscanf(name, "%u.%u", &relfilenode, &segmentFileNum);

	// UNDONE: sscanf is a rather poor scanner.
	// UNDONE: For right now, just assume properly named files....
	if (itemCount == 0)
	{
		DatabaseInfo_AddMiscEntry(info, tablespace, false, name);
		return;
	}
	else if (itemCount == 1)
		segmentFileNum = 0;
	else
		Assert(itemCount == 2);

	DatabaseInfo_AddRelSegFile(info, dbInfoRelHashTable, tablespace, relfilenode, segmentFileNum, eof);
}
Exemple #9
0
/*
 * open a file in the database directory ($PGDATA/base/DIROID/)
 *
 * if we are using the system default filespace. Otherwise open
 * the file in the filespace configured for temporary files.
 * The passed name MUST be a relative path.  Effectively, this
 * prepends DatabasePath or path of the filespace to it and then
 * acts like PathNameOpenFile.
 */
File
FileNameOpenFile(FileName fileName, int fileFlags, int fileMode)
{
	File		fd;
	char	   *fname;

	Assert(!is_absolute_path(fileName));
	fname = (char*)palloc(PATH_MAX);
	if (snprintf(fname, PATH_MAX, "%s/%s", getCurrentTempFilePath, fileName) > PATH_MAX)
	{
		ereport(ERROR, (errmsg("cannot generate path %s/%s", getCurrentTempFilePath,
                        fileName)));
	}
	fd = PathNameOpenFile(fname, fileFlags, fileMode);
	pfree(fname);
	return fd;
}
Exemple #10
0
/*
 * Open the specified segment of the relation,
 * and make a MdfdVec object for it.  Returns NULL on failure.
 */
static MdfdVec *
_mdfd_openseg(SMgrRelation reln, BlockNumber segno, int oflags)
{
	MdfdVec    *v;
	int			fd;
	char	   *path,
			   *fullpath;

	path = relpath(reln->smgr_rnode);

	if (segno > 0)
	{
		/* be sure we have enough space for the '.segno' */
		fullpath = (char *) palloc(strlen(path) + 12);
		sprintf(fullpath, "%s.%u", path, segno);
		pfree(path);
	}
	else
		fullpath = path;

	/* open the file */
	fd = PathNameOpenFile(fullpath, O_RDWR | PG_BINARY | oflags, 0600);

	pfree(fullpath);

	if (fd < 0)
		return NULL;

	/* allocate an mdfdvec entry for it */
	v = _fdvec_alloc();

	/* fill the entry */
	v->mdfd_vfd = fd;
	v->mdfd_segno = segno;
	v->mdfd_chain = NULL;
	Assert(_mdnblocks(fd, BLCKSZ) <= ((BlockNumber) RELSEG_SIZE));

	/* all done */
	return v;
}
Exemple #11
0
/*
 * lo_export -
 *	  exports an (inversion) large object.
 */
Datum
lo_export(PG_FUNCTION_ARGS)
{
	Oid			lobjId = PG_GETARG_OID(0);
	text	   *filename = PG_GETARG_TEXT_PP(1);
	File		fd;
	int			nbytes,
				tmp;
	char		buf[BUFSIZE];
	char		fnamebuf[MAXPGPATH];
	LargeObjectDesc *lobj;
	mode_t		oumask;

#ifndef ALLOW_DANGEROUS_LO_FUNCTIONS
	if (!superuser())
		ereport(ERROR,
				(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
				 errmsg("must be superuser to use server-side lo_export()"),
				 errhint("Anyone can use the client-side lo_export() provided by libpq.")));
#endif

	CreateFSContext();

	/*
	 * open the inversion object (no need to test for failure)
	 */
	lobj = inv_open(lobjId, INV_READ, fscxt);

	/*
	 * open the file to be written to
	 *
	 * Note: we reduce backend's normal 077 umask to the slightly friendlier
	 * 022. This code used to drop it all the way to 0, but creating
	 * world-writable export files doesn't seem wise.
	 */
	text_to_cstring_buffer(filename, fnamebuf, sizeof(fnamebuf));
	oumask = umask(S_IWGRP | S_IWOTH);
	fd = PathNameOpenFile(fnamebuf, O_CREAT | O_WRONLY | O_TRUNC | PG_BINARY,
						  S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
	umask(oumask);
	if (fd < 0)
		ereport(ERROR,
				(errcode_for_file_access(),
				 errmsg("could not create server file \"%s\": %m",
						fnamebuf)));

	/*
	 * read in from the inversion file and write to the filesystem
	 */
	while ((nbytes = inv_read(lobj, buf, BUFSIZE)) > 0)
	{
		tmp = FileWrite(fd, buf, nbytes);
		if (tmp != nbytes)
			ereport(ERROR,
					(errcode_for_file_access(),
					 errmsg("could not write server file \"%s\": %m",
							fnamebuf)));
	}

	FileClose(fd);
	inv_close(lobj);

	PG_RETURN_INT32(1);
}
Exemple #12
0
/*
 * Open a temporary file in a specific tablespace.
 * Subroutine for OpenTemporaryFile, which see for details.
 */
static File
OpenTemporaryFileInTablespace(Oid tblspcOid, bool rejectError)
{
    char		tempdirpath[MAXPGPATH];
    char		tempfilepath[MAXPGPATH];
    File		file;

    /*
     * Identify the tempfile directory for this tablespace.
     *
     * If someone tries to specify pg_global, use pg_default instead.
     */
    if (tblspcOid == DEFAULTTABLESPACE_OID ||
            tblspcOid == GLOBALTABLESPACE_OID)
    {
        /* The default tablespace is {datadir}/base */
        snprintf(tempdirpath, sizeof(tempdirpath), "base/%s",
                 PG_TEMP_FILES_DIR);
    }
    else
    {
        /* All other tablespaces are accessed via symlinks */
        snprintf(tempdirpath, sizeof(tempdirpath), "pg_tblspc/%u/%s",
                 tblspcOid, PG_TEMP_FILES_DIR);
    }

    /*
     * Generate a tempfile name that should be unique within the current
     * database instance.
     */
    snprintf(tempfilepath, sizeof(tempfilepath), "%s/%s%d.%ld",
             tempdirpath, PG_TEMP_FILE_PREFIX, MyProcPid, tempFileCounter++);

    /*
     * Open the file.  Note: we don't use O_EXCL, in case there is an orphaned
     * temp file that can be reused.
     */
    file = PathNameOpenFile(tempfilepath,
                            O_RDWR | O_CREAT | O_TRUNC | PG_BINARY,
                            0600);
    if (file <= 0)
    {
        /*
         * We might need to create the tablespace's tempfile directory, if no
         * one has yet done so.
         *
         * Don't check for error from mkdir; it could fail if someone else
         * just did the same thing.  If it doesn't work then we'll bomb out on
         * the second create attempt, instead.
         */
        mkdir(tempdirpath, S_IRWXU);

        file = PathNameOpenFile(tempfilepath,
                                O_RDWR | O_CREAT | O_TRUNC | PG_BINARY,
                                0600);
        if (file <= 0 && rejectError)
            elog(ERROR, "could not create temporary file \"%s\": %m",
                 tempfilepath);
    }

    return file;
}
Exemple #13
0
/*
 * lo_import -
 *	  imports a file as an (inversion) large object.
 */
Datum
lo_import(PG_FUNCTION_ARGS)
{
	text	   *filename = PG_GETARG_TEXT_P(0);
	File		fd;
	int			nbytes,
				tmp;
	char		buf[BUFSIZE];
	char		fnamebuf[MAXPGPATH];
	LargeObjectDesc *lobj;
	Oid			lobjOid;

#ifndef ALLOW_DANGEROUS_LO_FUNCTIONS
	if (!superuser())
		ereport(ERROR,
				(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
				 errmsg("must be superuser to use server-side lo_import()"),
				 errhint("Anyone can use the client-side lo_import() provided by libpq.")));
#endif

	CreateFSContext();

	/*
	 * open the file to be read in
	 */
	nbytes = VARSIZE(filename) - VARHDRSZ;
	if (nbytes >= MAXPGPATH)
		nbytes = MAXPGPATH - 1;
	memcpy(fnamebuf, VARDATA(filename), nbytes);
	fnamebuf[nbytes] = '\0';
	fd = PathNameOpenFile(fnamebuf, O_RDONLY | PG_BINARY, 0666);
	if (fd < 0)
		ereport(ERROR,
				(errcode_for_file_access(),
				 errmsg("could not open server file \"%s\": %m",
						fnamebuf)));

	/*
	 * create an inversion object
	 */
	lobjOid = inv_create(InvalidOid);

	/*
	 * read in from the filesystem and write to the inversion object
	 */
	lobj = inv_open(lobjOid, INV_WRITE, fscxt);

	while ((nbytes = FileRead(fd, buf, BUFSIZE)) > 0)
	{
		tmp = inv_write(lobj, buf, nbytes);
		Assert(tmp == nbytes);
	}

	if (nbytes < 0)
		ereport(ERROR,
				(errcode_for_file_access(),
				 errmsg("could not read server file \"%s\": %m",
						fnamebuf)));

	inv_close(lobj);
	FileClose(fd);

	PG_RETURN_OID(lobjOid);
}
/*
 * Open a relation for mirrored write.
 */
static void MirroredBufferPool_DoOpen(
	MirroredBufferPoolOpen 		*open,
				/* The resulting open struct. */

	RelFileNode 				*relFileNode,
				/* The tablespace, database, and relation OIDs for the open. */

	uint32						segmentFileNum,
				/* Which segment file. */

	char						*relationName,
				/* For tracing only.  Can be NULL in some execution paths. */

	MirrorDataLossTrackingState mirrorDataLossTrackingState,

	int64						mirrorDataLossTrackingSessionNum,

	bool						create,

	bool						mirrorOnly,
	
	bool						copyToMirror,

	int 						*primaryError,
	
	bool						*mirrorDataLossOccurred)
{
	int		fileFlags = O_RDWR | PG_BINARY;
	int		fileMode = 0600;
						/*
						 * File mode is S_IRUSR 00400 user has read permission
						 *               + S_IWUSR 00200 user has write permission
						 */

	char *primaryFilespaceLocation = NULL;
	char *mirrorFilespaceLocation = NULL;

	Assert(open != NULL);
	
	*primaryError = 0;
	*mirrorDataLossOccurred = false;

	if (create)
		fileFlags = O_CREAT | O_RDWR | PG_BINARY;

	PersistentTablespace_GetPrimaryAndMirrorFilespaces(
										relFileNode->spcNode,
										&primaryFilespaceLocation,
										&mirrorFilespaceLocation);
	
	if (Debug_persistent_print
		&&
		(create || mirrorOnly || copyToMirror))
	{
		SUPPRESS_ERRCONTEXT_DECLARE;

		SUPPRESS_ERRCONTEXT_PUSH();

		elog(Persistent_DebugPrintLevel(), 
			 "MirroredBufferPool_DoOpen: Special open %u/%u/%u --> create %s, mirrorOnly %s, copyToMirror %s, "
			 "primary filespace location %s "
			 "mirror filespace location %s ",
			 relFileNode->spcNode,
			 relFileNode->dbNode,
			 relFileNode->relNode,
			 (create ? "true" : "false"),
			 (mirrorOnly ? "true" : "false"),
			 (copyToMirror ? "true" : "false"),
			 (primaryFilespaceLocation == NULL) ? "<null>" : primaryFilespaceLocation,
			 (mirrorFilespaceLocation == NULL) ? "<null>" : mirrorFilespaceLocation);

		SUPPRESS_ERRCONTEXT_POP();
	}
	
	MemSet(open, 0, sizeof(MirroredBufferPoolOpen));
	open->primaryFile = -1;
	
	if (mirrorFilespaceLocation == NULL)
		sprintf(open->mirrorFilespaceLocation, "%s", "");
	else
		sprintf(open->mirrorFilespaceLocation, "%s", mirrorFilespaceLocation);
		
	open->relFileNode = *relFileNode;
	open->segmentFileNum = segmentFileNum;

	open->create = create;
	open->mirrorOnly = mirrorOnly;
	open->copyToMirror = copyToMirror;
	
	MirroredBufferPool_SetUpMirrorAccess(
							relFileNode,
							segmentFileNum,
							relationName,
							mirrorDataLossTrackingState,
							mirrorDataLossTrackingSessionNum,
							/* primaryOnly */ false,
							mirrorOnly,
							&open->mirrorMode,
							&open->mirrorDataLossOccurred);

	if (StorageManagerMirrorMode_DoPrimaryWork(open->mirrorMode))
	{
		char *dbPath;
		char *path;

		dbPath = (char*)palloc(MAXPGPATH + 1);
		path = (char*)palloc(MAXPGPATH + 1);

		/*
		 * Do the primary work first so we don't leave files on the mirror or have an
		 * open to clean up.
		 */

		FormDatabasePath(
					dbPath,
					primaryFilespaceLocation,
					relFileNode->spcNode,
					relFileNode->dbNode);
		
		if (segmentFileNum == 0)
			sprintf(path, "%s/%u", dbPath, relFileNode->relNode);
		else
			sprintf(path, "%s/%u.%u", dbPath, relFileNode->relNode, segmentFileNum);

		errno = 0;
		
		open->primaryFile = PathNameOpenFile(path, fileFlags, fileMode);
				
		if (open->primaryFile < 0)
		{
			*primaryError = errno;
		}

		pfree(dbPath);
		pfree(path);
	}
	
	if (StorageManagerMirrorMode_SendToMirror(open->mirrorMode) &&
		*primaryError == 0 &&
		!open->mirrorDataLossOccurred)
	{
		if (FileRepPrimary_MirrorOpen(
					  FileRep_GetRelationIdentifier(
										open->mirrorFilespaceLocation,
										open->relFileNode, 
										open->segmentFileNum),
					  FileRepRelationTypeBufferPool,
					  FILEREP_OFFSET_UNDEFINED,
					  fileFlags,
					  fileMode,
					  TRUE /* supressError */) != 0) 
		{
			if (Debug_filerep_print)
				ereport(LOG,
					(errmsg("could not sent file open request to mirror "), 
							FileRep_ReportRelationPath(
												open->mirrorFilespaceLocation,
												open->relFileNode,
												open->segmentFileNum)));
		}

		open->mirrorDataLossOccurred =  FileRepPrimary_IsMirrorDataLossOccurred();
	
	}
	
	if (*primaryError != 0)
	{
		open->isActive = false;
	}
	else if (StorageManagerMirrorMode_DoPrimaryWork(open->mirrorMode))
	{
		open->isActive = true;
	}
	else if (StorageManagerMirrorMode_SendToMirror(open->mirrorMode) &&
			 !open->mirrorDataLossOccurred)
	{
		open->isActive = true;
	}

	*mirrorDataLossOccurred = open->mirrorDataLossOccurred;

	if (primaryFilespaceLocation != NULL)
		pfree(primaryFilespaceLocation);
	
	if (mirrorFilespaceLocation != NULL)
		pfree(mirrorFilespaceLocation);
}