Update copyright for 2009.

[postgresql] / src / include / storage / fd.h

diff --git a/src/include/storage/fd.h b/src/include/storage/fd.h
index cb81f36a8a44fa0c2991fec045f13aa32a1d8872..17aa150aa03ea33e2bdc4be9f522ec0c7ddcfa48 100644 (file)
--- a/src/include/storage/fd.h
+++ b/src/include/storage/fd.h
@@ -4,10 +4,10 @@
  *       Virtual file descriptor definitions.
  *
  *
- * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/storage/fd.h,v 1.40 2003/11/29 22:41:13 pgsql Exp $
+ * $PostgreSQL: pgsql/src/include/storage/fd.h,v 1.63 2009/01/01 17:24:01 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -15,7 +15,7 @@
 /*
  * calls:
  *
- *     File {Close, Read, Write, Seek, Tell, MarkDirty, Sync}
+ *     File {Close, Read, Write, Seek, Tell, Sync}
  *     {File Name Open, Allocate, Free} File
  *
  * These are NOT JUST RENAMINGS OF THE UNIX ROUTINES.
@@ -31,10 +31,16 @@
  * use FreeFile, not fclose, to close it.  AVOID using stdio for files
  * that you intend to hold open for any length of time, since there is
  * no way for them to share kernel file descriptors with other files.
+ *
+ * Likewise, use AllocateDir/FreeDir, not opendir/closedir, to allocate
+ * open directories (DIR*).
  */
 #ifndef FD_H
 #define FD_H
 
+#include <dirent.h>
+
+
 /*
  * FileSeek uses the standard UNIX lseek(2) flags.
  */
@@ -53,28 +59,46 @@ extern int  max_files_per_process;
  */
 
 /* Operations on virtual Files --- equivalent to Unix kernel file ops */
-extern File FileNameOpenFile(FileName fileName, int fileFlags, int fileMode);
 extern File PathNameOpenFile(FileName fileName, int fileFlags, int fileMode);
 extern File OpenTemporaryFile(bool interXact);
 extern void FileClose(File file);
-extern void FileUnlink(File file);
 extern int     FileRead(File file, char *buffer, int amount);
 extern int     FileWrite(File file, char *buffer, int amount);
-extern long FileSeek(File file, long offset, int whence);
-extern int     FileTruncate(File file, long offset);
+extern int     FileSync(File file);
+extern off_t FileSeek(File file, off_t offset, int whence);
+extern int     FileTruncate(File file, off_t offset);
 
 /* Operations that allow use of regular stdio --- USE WITH CAUTION */
-extern FILE *AllocateFile(char *name, char *mode);
-extern void FreeFile(FILE *);
+extern FILE *AllocateFile(const char *name, const char *mode);
+extern int     FreeFile(FILE *file);
+
+/* Operations to allow use of the <dirent.h> library routines */
+extern DIR *AllocateDir(const char *dirname);
+extern struct dirent *ReadDir(DIR *dir, const char *dirname);
+extern int     FreeDir(DIR *dir);
 
 /* If you've really really gotta have a plain kernel FD, use this */
 extern int     BasicOpenFile(FileName fileName, int fileFlags, int fileMode);
 
 /* Miscellaneous support routines */
+extern void InitFileAccess(void);
+extern void set_max_safe_fds(void);
 extern void closeAllVfds(void);
+extern void SetTempTablespaces(Oid *tableSpaces, int numSpaces);
+extern bool TempTablespacesAreSet(void);
+extern Oid     GetNextTempTableSpace(void);
 extern void AtEOXact_Files(void);
+extern void AtEOSubXact_Files(bool isCommit, SubTransactionId mySubid,
+                                 SubTransactionId parentSubid);
 extern void RemovePgTempFiles(void);
+
 extern int     pg_fsync(int fd);
+extern int     pg_fsync_no_writethrough(int fd);
+extern int     pg_fsync_writethrough(int fd);
 extern int     pg_fdatasync(int fd);
 
+/* Filename components for OpenTemporaryFile */
+#define PG_TEMP_FILES_DIR "pgsql_tmp"
+#define PG_TEMP_FILE_PREFIX "pgsql_tmp"
+
 #endif   /* FD_H */