Remove obsolete linux dynloader code
This has been obsolete probably since the late 1990s.
This commit is contained in:
Peter Eisentraut
parent
b5d29299cc
commit
351855fc4e
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@ -12495,7 +12495,7 @@ $as_echo "#define HAVE_STDBOOL_H 1" >>confdefs.h
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fi
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for ac_header in atomic.h crypt.h dld.h fp_class.h getopt.h ieeefp.h ifaddrs.h langinfo.h mbarrier.h poll.h sys/epoll.h sys/ipc.h sys/prctl.h sys/procctl.h sys/pstat.h sys/resource.h sys/select.h sys/sem.h sys/shm.h sys/sockio.h sys/tas.h sys/un.h termios.h ucred.h utime.h wchar.h wctype.h
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for ac_header in atomic.h crypt.h fp_class.h getopt.h ieeefp.h ifaddrs.h langinfo.h mbarrier.h poll.h sys/epoll.h sys/ipc.h sys/prctl.h sys/procctl.h sys/pstat.h sys/resource.h sys/select.h sys/sem.h sys/shm.h sys/sockio.h sys/tas.h sys/un.h termios.h ucred.h utime.h wchar.h wctype.h
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do :
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as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
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ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
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@ -1260,7 +1260,7 @@ AC_SUBST(UUID_LIBS)
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AC_HEADER_STDBOOL
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AC_CHECK_HEADERS([atomic.h crypt.h dld.h fp_class.h getopt.h ieeefp.h ifaddrs.h langinfo.h mbarrier.h poll.h sys/epoll.h sys/ipc.h sys/prctl.h sys/procctl.h sys/pstat.h sys/resource.h sys/select.h sys/sem.h sys/shm.h sys/sockio.h sys/tas.h sys/un.h termios.h ucred.h utime.h wchar.h wctype.h])
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AC_CHECK_HEADERS([atomic.h crypt.h fp_class.h getopt.h ieeefp.h ifaddrs.h langinfo.h mbarrier.h poll.h sys/epoll.h sys/ipc.h sys/prctl.h sys/procctl.h sys/pstat.h sys/resource.h sys/select.h sys/sem.h sys/shm.h sys/sockio.h sys/tas.h sys/un.h termios.h ucred.h utime.h wchar.h wctype.h])
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# On BSD, test for net/if.h will fail unless sys/socket.h
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# is included first.
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@ -1,133 +1,7 @@
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/*-------------------------------------------------------------------------
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/*
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* src/backend/port/dynloader/linux.c
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*
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* linux.c
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* Dynamic Loader for Postgres for Linux, generated from those for
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* Ultrix.
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* Dummy file used for nothing at this point
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*
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* You need to install the dld library on your Linux system!
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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/linux.c
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*
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*-------------------------------------------------------------------------
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* see linux.h
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*/
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#include "postgres.h"
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#ifdef HAVE_DLD_H
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#include <dld.h>
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#endif
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#include "dynloader.h"
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#include "miscadmin.h"
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#ifndef HAVE_DLOPEN
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void *
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pg_dlopen(const char *filename)
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{
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#ifndef HAVE_DLD_H
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elog(ERROR, "dynamic load not supported");
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return NULL;
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#else
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static int dl_initialized = 0;
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/*
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* initializes the dynamic loader with the executable's pathname. (only
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* needs to do this the first time pg_dlopen is called.)
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*/
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if (!dl_initialized)
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{
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if (dld_init(dld_find_executable(my_exec_path)))
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return NULL;
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/*
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* if there are undefined symbols, we want dl to search from the
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* following libraries also.
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*/
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dl_initialized = 1;
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}
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/*
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* link the file, then check for undefined symbols!
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*/
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if (dld_link(filename))
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return NULL;
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/*
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* If undefined symbols: try to link with the C and math libraries! This
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* could be smarter, if the dynamic linker was able to handle shared libs!
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*/
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if (dld_undefined_sym_count > 0)
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{
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if (dld_link("/usr/lib/libc.a"))
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{
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elog(WARNING, "could not link C library");
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return NULL;
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}
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if (dld_undefined_sym_count > 0)
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{
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if (dld_link("/usr/lib/libm.a"))
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{
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elog(WARNING, "could not link math library");
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return NULL;
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}
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if (dld_undefined_sym_count > 0)
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{
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int count = dld_undefined_sym_count;
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char **list = dld_list_undefined_sym();
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/* list the undefined symbols, if any */
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do
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{
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elog(WARNING, "\"%s\" is undefined", *list);
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list++;
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count--;
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} while (count > 0);
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dld_unlink_by_file(filename, 1);
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return NULL;
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}
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}
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}
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return (void *) strdup(filename);
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#endif
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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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#ifndef HAVE_DLD_H
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return NULL;
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#else
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return (PGFunction) dld_get_func((funcname));
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#endif
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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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#ifndef HAVE_DLD_H
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#else
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dld_unlink_by_file(handle, 1);
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free(handle);
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#endif
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}
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char *
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pg_dlerror(void)
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{
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#ifndef HAVE_DLD_H
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return "dynaloader unsupported";
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#else
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return dld_strerror(dld_errno);
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#endif
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}
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#endif /* !HAVE_DLOPEN */
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@ -15,12 +15,7 @@
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#define PORT_PROTOS_H
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#include "utils/dynamic_loader.h" /* pgrminclude ignore */
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#ifdef HAVE_DLOPEN
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#include <dlfcn.h>
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#endif
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#ifdef HAVE_DLOPEN
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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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@ -39,6 +34,5 @@
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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 /* HAVE_DLOPEN */
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#endif /* PORT_PROTOS_H */
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@ -186,9 +186,6 @@
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don't. */
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#undef HAVE_DECL_VSNPRINTF
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/* Define to 1 if you have the <dld.h> header file. */
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#undef HAVE_DLD_H
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/* Define to 1 if you have the `dlopen' function. */
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#undef HAVE_DLOPEN
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@ -143,9 +143,6 @@
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don't. */
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#define HAVE_DECL_VSNPRINTF 1
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/* Define to 1 if you have the <dld.h> header file. */
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/* #undef HAVE_DLD_H */
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/* Define to 1 if you have the `dlopen' function. */
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/* #undef HAVE_DLOPEN */
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