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-rw-r--r--src/include/storage/fileset.h40
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diff --git a/src/include/storage/fileset.h b/src/include/storage/fileset.h
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+/*-------------------------------------------------------------------------
+ *
+ * fileset.h
+ * Management of named temporary files.
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/storage/fileset.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef FILESET_H
+#define FILESET_H
+
+#include "storage/fd.h"
+
+/*
+ * A set of temporary files.
+ */
+typedef struct FileSet
+{
+ pid_t creator_pid; /* PID of the creating process */
+ uint32 number; /* per-PID identifier */
+ int ntablespaces; /* number of tablespaces to use */
+ Oid tablespaces[8]; /* OIDs of tablespaces to use. Assumes that
+ * it's rare that there more than temp
+ * tablespaces. */
+} FileSet;
+
+extern void FileSetInit(FileSet *fileset);
+extern File FileSetCreate(FileSet *fileset, const char *name);
+extern File FileSetOpen(FileSet *fileset, const char *name,
+ int mode);
+extern bool FileSetDelete(FileSet *fileset, const char *name,
+ bool error_on_failure);
+extern void FileSetDeleteAll(FileSet *fileset);
+
+#endif