mirror of https://github.com/postgres/postgres
Nowadays, all platforms except Windows and older HP-UX have standard dlopen() support. So having a separate implementation per platform under src/backend/port/dynloader/ is a bit excessive. Instead, treat dlopen() like other library functions that happen to be missing sometimes and put a replacement implementation under src/port/. Discussion: https://www.postgresql.org/message-id/flat/e11a49cb-570a-60b7-707d-7084c8de0e61%402ndquadrant.com#54e735ae37476a121abb4e33c2549b03pull/34/head
Peter Eisentraut
7 years ago
parent
ac27c74def
commit
842cb9fa62
@ -1,4 +1,3 @@ |
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/dynloader.c |
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/pg_sema.c |
/pg_sema.c |
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/pg_shmem.c |
/pg_shmem.c |
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/tas.s |
/tas.s |
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@ -1,7 +0,0 @@ |
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/*
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* src/backend/port/dynloader/aix.c |
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* |
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* Dummy file used for nothing at this point |
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* |
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* see aix.h |
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*/ |
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@ -1,39 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* aix.h |
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* prototypes for AIX-specific routines |
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* |
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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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* src/backend/port/dynloader/aix.h |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef PORT_PROTOS_H |
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#define PORT_PROTOS_H |
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#include <dlfcn.h> |
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#include "utils/dynamic_loader.h" /* pgrminclude ignore */ |
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/*
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* In some older systems, the RTLD_NOW flag isn't defined and the mode |
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* argument to dlopen must always be 1. The RTLD_GLOBAL flag is wanted |
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* if available, but it doesn't exist everywhere. |
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* If it doesn't exist, set it to 0 so it has no effect. |
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*/ |
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#ifndef RTLD_NOW |
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#define RTLD_NOW 1 |
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#endif |
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#ifndef RTLD_GLOBAL |
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#define RTLD_GLOBAL 0 |
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#endif |
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#define pg_dlopen(f) dlopen((f), RTLD_NOW | RTLD_GLOBAL) |
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#define pg_dlsym(h, f) ((PGFunction) dlsym(h, f)) |
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#define pg_dlclose(h) dlclose(h) |
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#define pg_dlerror() dlerror() |
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#endif /* PORT_PROTOS_H */ |
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@ -1,3 +0,0 @@ |
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/* src/backend/port/dynloader/cygwin.c */ |
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/* Dummy file used for nothing at this point; see cygwin.h */ |
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@ -1,36 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* Dynamic loader declarations for Cygwin |
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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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* src/backend/port/dynloader/cygwin.h |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef PORT_PROTOS_H |
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#define PORT_PROTOS_H |
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#include <dlfcn.h> |
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#include "utils/dynamic_loader.h" /* pgrminclude ignore */ |
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/*
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* In some older systems, the RTLD_NOW flag isn't defined and the mode |
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* argument to dlopen must always be 1. The RTLD_GLOBAL flag is wanted |
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* if available, but it doesn't exist everywhere. |
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* If it doesn't exist, set it to 0 so it has no effect. |
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*/ |
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#ifndef RTLD_NOW |
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#define RTLD_NOW 1 |
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#endif |
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#ifndef RTLD_GLOBAL |
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#define RTLD_GLOBAL 0 |
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#endif |
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#define pg_dlopen(f) dlopen((f), RTLD_NOW | RTLD_GLOBAL) |
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#define pg_dlsym dlsym |
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#define pg_dlclose dlclose |
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#define pg_dlerror dlerror |
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#endif /* PORT_PROTOS_H */ |
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@ -1,35 +0,0 @@ |
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/*
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* Dynamic loading support for macOS (Darwin) |
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* |
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* src/backend/port/dynloader/darwin.c |
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*/ |
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#include "postgres.h" |
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#include <dlfcn.h> |
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#include "dynloader.h" |
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void * |
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pg_dlopen(const char *filename) |
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{ |
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return dlopen(filename, RTLD_NOW | RTLD_GLOBAL); |
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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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dlclose(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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return dlsym(handle, funcname); |
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} |
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char * |
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pg_dlerror(void) |
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{ |
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return dlerror(); |
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} |
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@ -1,8 +0,0 @@ |
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/* src/backend/port/dynloader/darwin.h */ |
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#include "fmgr.h" |
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void *pg_dlopen(const char *filename); |
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PGFunction pg_dlsym(void *handle, const char *funcname); |
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void pg_dlclose(void *handle); |
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char *pg_dlerror(void); |
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@ -1,7 +0,0 @@ |
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/*
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* src/backend/port/dynloader/freebsd.c |
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* |
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* Dummy file used for nothing at this point |
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* |
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* see freebsd.h |
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*/ |
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@ -1,38 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* freebsd.h |
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* port-specific prototypes for FreeBSD |
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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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* src/backend/port/dynloader/freebsd.h |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef PORT_PROTOS_H |
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#define PORT_PROTOS_H |
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#include <dlfcn.h> |
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#include "utils/dynamic_loader.h" /* pgrminclude ignore */ |
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/*
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* In some older systems, the RTLD_NOW flag isn't defined and the mode |
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* argument to dlopen must always be 1. The RTLD_GLOBAL flag is wanted |
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* if available, but it doesn't exist everywhere. |
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* If it doesn't exist, set it to 0 so it has no effect. |
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*/ |
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#ifndef RTLD_NOW |
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#define RTLD_NOW 1 |
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#endif |
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#ifndef RTLD_GLOBAL |
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#define RTLD_GLOBAL 0 |
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#endif |
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#define pg_dlopen(f) dlopen((f), RTLD_NOW | RTLD_GLOBAL) |
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#define pg_dlsym dlsym |
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#define pg_dlclose dlclose |
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#define pg_dlerror dlerror |
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#endif /* PORT_PROTOS_H */ |
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@ -1,68 +0,0 @@ |
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/*-------------------------------------------------------------------------
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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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@ -1,25 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* dynloader.h |
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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.h |
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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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/* System includes */ |
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#include "fmgr.h" |
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extern void *pg_dlopen(const char *filename); |
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extern PGFunction pg_dlsym(void *handle, const char *funcname); |
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extern void pg_dlclose(void *handle); |
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extern char *pg_dlerror(void); |
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@ -1,7 +0,0 @@ |
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/*
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* src/backend/port/dynloader/linux.c |
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* |
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* Dummy file used for nothing at this point |
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* |
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* see linux.h |
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*/ |
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@ -1,38 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* linux.h |
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* Port-specific prototypes for Linux |
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* |
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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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* src/backend/port/dynloader/linux.h |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef PORT_PROTOS_H |
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#define PORT_PROTOS_H |
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#include "utils/dynamic_loader.h" /* pgrminclude ignore */ |
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#include <dlfcn.h> |
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/*
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* In some older systems, the RTLD_NOW flag isn't defined and the mode |
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* argument to dlopen must always be 1. The RTLD_GLOBAL flag is wanted |
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* if available, but it doesn't exist everywhere. |
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* If it doesn't exist, set it to 0 so it has no effect. |
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*/ |
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#ifndef RTLD_NOW |
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#define RTLD_NOW 1 |
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#endif |
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#ifndef RTLD_GLOBAL |
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#define RTLD_GLOBAL 0 |
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#endif |
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#define pg_dlopen(f) dlopen((f), RTLD_NOW | RTLD_GLOBAL) |
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#define pg_dlsym dlsym |
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#define pg_dlclose dlclose |
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#define pg_dlerror dlerror |
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#endif /* PORT_PROTOS_H */ |
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@ -1,7 +0,0 @@ |
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/*
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* src/backend/port/dynloader/netbsd.c |
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* |
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* Dummy file used for nothing at this point |
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* |
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* see netbsd.h |
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*/ |
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/*-------------------------------------------------------------------------
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* |
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* netbsd.h |
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* port-specific prototypes for NetBSD |
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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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* src/backend/port/dynloader/netbsd.h |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef PORT_PROTOS_H |
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#define PORT_PROTOS_H |
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#include <dlfcn.h> |
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#include "utils/dynamic_loader.h" /* pgrminclude ignore */ |
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/*
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* In some older systems, the RTLD_NOW flag isn't defined and the mode |
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* argument to dlopen must always be 1. The RTLD_GLOBAL flag is wanted |
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* if available, but it doesn't exist everywhere. |
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* If it doesn't exist, set it to 0 so it has no effect. |
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*/ |
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#ifndef RTLD_NOW |
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#define RTLD_NOW 1 |
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#endif |
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#ifndef RTLD_GLOBAL |
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#define RTLD_GLOBAL 0 |
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#endif |
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#define pg_dlopen(f) dlopen((f), RTLD_NOW | RTLD_GLOBAL) |
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#define pg_dlsym dlsym |
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#define pg_dlclose dlclose |
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#define pg_dlerror dlerror |
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#endif /* PORT_PROTOS_H */ |
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/*
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* src/backend/port/dynloader/openbsd.c |
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* |
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* Dummy file used for nothing at this point |
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* |
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* see openbsd.h |
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*/ |
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/*-------------------------------------------------------------------------
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* |
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* openbsd.h |
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* port-specific prototypes for OpenBSD |
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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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* src/backend/port/dynloader/openbsd.h |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef PORT_PROTOS_H |
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#define PORT_PROTOS_H |
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#include <dlfcn.h> |
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#include "utils/dynamic_loader.h" /* pgrminclude ignore */ |
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/*
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* In some older systems, the RTLD_NOW flag isn't defined and the mode |
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* argument to dlopen must always be 1. The RTLD_GLOBAL flag is wanted |
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* if available, but it doesn't exist everywhere. |
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* If it doesn't exist, set it to 0 so it has no effect. |
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*/ |
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#ifndef RTLD_NOW |
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#define RTLD_NOW 1 |
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#endif |
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#ifndef RTLD_GLOBAL |
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#define RTLD_GLOBAL 0 |
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#endif |
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#define pg_dlopen(f) dlopen((f), RTLD_NOW | RTLD_GLOBAL) |
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#define pg_dlsym dlsym |
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#define pg_dlclose dlclose |
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#define pg_dlerror dlerror |
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#endif /* PORT_PROTOS_H */ |
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/*
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* src/backend/port/dynloader/solaris.c |
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* |
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* Dummy file used for nothing at this point |
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* |
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* see solaris.h |
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*/ |
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@ -1,38 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* solaris.h |
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* port-specific prototypes for Solaris |
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* |
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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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* src/backend/port/dynloader/solaris.h |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef PORT_PROTOS_H |
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#define PORT_PROTOS_H |
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#include <dlfcn.h> |
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#include "utils/dynamic_loader.h" /* pgrminclude ignore */ |
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|
|
||||||
/*
|
|
||||||
* In some older systems, the RTLD_NOW flag isn't defined and the mode |
|
||||||
* argument to dlopen must always be 1. The RTLD_GLOBAL flag is wanted |
|
||||||
* if available, but it doesn't exist everywhere. |
|
||||||
* If it doesn't exist, set it to 0 so it has no effect. |
|
||||||
*/ |
|
||||||
#ifndef RTLD_NOW |
|
||||||
#define RTLD_NOW 1 |
|
||||||
#endif |
|
||||||
#ifndef RTLD_GLOBAL |
|
||||||
#define RTLD_GLOBAL 0 |
|
||||||
#endif |
|
||||||
|
|
||||||
#define pg_dlopen(f) dlopen((f), RTLD_NOW | RTLD_GLOBAL) |
|
||||||
#define pg_dlsym dlsym |
|
||||||
#define pg_dlclose dlclose |
|
||||||
#define pg_dlerror dlerror |
|
||||||
|
|
||||||
#endif /* PORT_PROTOS_H */ |
|
||||||
@ -1,19 +0,0 @@ |
|||||||
/*
|
|
||||||
* src/backend/port/dynloader/win32.h |
|
||||||
*/ |
|
||||||
#ifndef PORT_PROTOS_H |
|
||||||
#define PORT_PROTOS_H |
|
||||||
|
|
||||||
#include "utils/dynamic_loader.h" /* pgrminclude ignore */ |
|
||||||
|
|
||||||
#define pg_dlopen(f) dlopen((f), 1) |
|
||||||
#define pg_dlsym dlsym |
|
||||||
#define pg_dlclose dlclose |
|
||||||
#define pg_dlerror dlerror |
|
||||||
|
|
||||||
char *dlerror(void); |
|
||||||
int dlclose(void *handle); |
|
||||||
void *dlsym(void *handle, const char *symbol); |
|
||||||
void *dlopen(const char *path, int mode); |
|
||||||
|
|
||||||
#endif /* PORT_PROTOS_H */ |
|
||||||
@ -1,25 +0,0 @@ |
|||||||
/*-------------------------------------------------------------------------
|
|
||||||
* |
|
||||||
* dynamic_loader.h |
|
||||||
* |
|
||||||
* |
|
||||||
* |
|
||||||
* Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group |
|
||||||
* Portions Copyright (c) 1994, Regents of the University of California |
|
||||||
* |
|
||||||
* src/include/utils/dynamic_loader.h |
|
||||||
* |
|
||||||
*------------------------------------------------------------------------- |
|
||||||
*/ |
|
||||||
#ifndef DYNAMIC_LOADER_H |
|
||||||
#define DYNAMIC_LOADER_H |
|
||||||
|
|
||||||
#include "fmgr.h" |
|
||||||
|
|
||||||
|
|
||||||
extern void *pg_dlopen(const char *filename); |
|
||||||
extern PGFunction pg_dlsym(void *handle, const char *funcname); |
|
||||||
extern void pg_dlclose(void *handle); |
|
||||||
extern char *pg_dlerror(void); |
|
||||||
|
|
||||||
#endif /* DYNAMIC_LOADER_H */ |
|
||||||
Loading…
Reference in new issue