granicus.if.org Git - postgresql/blob - src/include/utils/dynamic_loader.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * dynamic_loader.h--
   4  *
   5  *
   6  *
   7  * Copyright (c) 1994, Regents of the University of California
   8  *
   9  * $Id: dynamic_loader.h,v 1.6 1997/09/07 05:02:22 momjian Exp $
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13 #ifndef DYNAMIC_LOADER_H
  14 #define DYNAMIC_LOADER_H
  15
  16 #include <sys/types.h>
  17 #include <sys/param.h>                  /* For MAXPATHLEN */
  18
  19 #include <postgres.h>
  20
  21 #ifdef MIN
  22 #undef MIN
  23 #undef MAX
  24 #endif                                                  /* MIN */
  25
  26 /*
  27  * List of dynamically loaded files.
  28  */
  29
  30 typedef struct df_files
  31 {
  32         char                    filename[MAXPATHLEN];           /* Full pathname of file */
  33         dev_t                   device;         /* Device file is on */
  34         ino_t                   inode;          /* Inode number of file */
  35         void               *handle;             /* a handle for pg_dl* functions */
  36         struct df_files *next;
  37 }                               DynamicFileList;
  38
  39 extern void    *pg_dlopen(char *filename);
  40 extern func_ptr pg_dlsym(void *handle, char *funcname);
  41 extern void             pg_dlclose(void *handle);
  42 extern char    *pg_dlerror(void);
  43
  44 #endif                                                  /* DYNAMIC_LOADER_H */