69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* dynloader.c
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* dynamic loader for HP-UX using the shared library mechanism
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*
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* Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* src/backend/port/dynloader/hpux.c
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*
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* NOTES
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* all functions are defined here -- it's impossible to trace the
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* shl_* routines from the bundled HP-UX debugger.
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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/* System includes */
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#include <a.out.h>
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#include <dl.h>
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#include "dynloader.h"
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#include "utils/dynamic_loader.h"
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void *
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pg_dlopen(const char *filename)
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{
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/*
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* Use BIND_IMMEDIATE so that undefined symbols cause a failure return
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* from shl_load(), rather than an abort() later on when we attempt to
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* call the library!
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*/
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shl_t handle = shl_load(filename,
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BIND_IMMEDIATE | BIND_VERBOSE | DYNAMIC_PATH,
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0L);
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return (void *) handle;
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}
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PGFunction
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pg_dlsym(void *handle, const char *funcname)
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{
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PGFunction f;
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if (shl_findsym((shl_t *) & handle, funcname, TYPE_PROCEDURE, &f) == -1)
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f = (PGFunction) NULL;
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return f;
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}
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void
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pg_dlclose(void *handle)
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{
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shl_unload((shl_t) handle);
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}
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char *
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pg_dlerror(void)
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{
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static char errmsg[] = "shl_load failed";
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if (errno)
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return strerror(errno);
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return errmsg;
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}
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