84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
|
/****************************************************************
|
||
|
|
* *
|
||
|
|
* Copyright 2011 Fidelity Information Services, Inc *
|
||
|
|
* *
|
||
|
|
* This source code contains the intellectual property *
|
||
|
|
* of its copyright holder(s), and is made available *
|
||
|
|
* under a license. If you do not know the terms of *
|
||
|
|
* the license, please stop and do not read further. *
|
||
|
|
* *
|
||
|
|
****************************************************************/
|
||
|
|
|
||
|
|
#include "mdef.h"
|
||
|
|
|
||
|
|
#include "gtm_string.h"
|
||
|
|
#include <dlfcn.h>
|
||
|
|
|
||
|
|
#include "lv_val.h"
|
||
|
|
#include "fgncal.h"
|
||
|
|
#include "parse_file.h"
|
||
|
|
#include "zro_shlibs.h"
|
||
|
|
#include "zroutines.h"
|
||
|
|
#include "error.h"
|
||
|
|
|
||
|
|
error_def(ERR_SYSCALL);
|
||
|
|
error_def(ERR_TEXT);
|
||
|
|
|
||
|
|
/* Routine to lookup given shlib_name to see if we already have it open. If yes, just
|
||
|
|
* return its handle. Else, dlopen the shared library and return its handle.
|
||
|
|
*/
|
||
|
|
void *zro_shlibs_find(char *shlib_name)
|
||
|
|
{
|
||
|
|
open_shlib *oshlb;
|
||
|
|
void *handle;
|
||
|
|
DCL_THREADGBL_ACCESS;
|
||
|
|
|
||
|
|
SETUP_THREADGBL_ACCESS;
|
||
|
|
for (oshlb = TREF(open_shlib_root); oshlb; oshlb = oshlb->next)
|
||
|
|
{ /* Brute force lookup of library - infrequent activity plus few libs mean we
|
||
|
|
* won't make the effort to hash this (typically 0-5 libs max.
|
||
|
|
*/
|
||
|
|
if (0 == strcmp(shlib_name, oshlb->shlib_name))
|
||
|
|
{
|
||
|
|
assert(oshlb->shlib_handle);
|
||
|
|
return oshlb->shlib_handle;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* Library was not found. Open it and create a new entry */
|
||
|
|
handle = fgn_getpak(shlib_name, ERROR);
|
||
|
|
oshlb = malloc(SIZEOF(open_shlib));
|
||
|
|
oshlb->shlib_handle = handle;
|
||
|
|
strcpy(oshlb->shlib_name, shlib_name);
|
||
|
|
oshlb->next = TREF(open_shlib_root);
|
||
|
|
TREF(open_shlib_root) = oshlb;
|
||
|
|
return handle;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Routine called to dlclose() all of the known libraries in our list so they are
|
||
|
|
* detached allowing potentially new(er) versions to be linked in.
|
||
|
|
*/
|
||
|
|
void zro_shlibs_unlink_all(void)
|
||
|
|
{
|
||
|
|
open_shlib *oshlb, *oshlb_next;
|
||
|
|
char *dlerr;
|
||
|
|
int status, len;
|
||
|
|
DCL_THREADGBL_ACCESS;
|
||
|
|
|
||
|
|
SETUP_THREADGBL_ACCESS;
|
||
|
|
for (oshlb = TREF(open_shlib_root); oshlb; oshlb = oshlb_next)
|
||
|
|
{ /* Cycle through list close all libraries and releasing the elements */
|
||
|
|
oshlb_next = oshlb->next;
|
||
|
|
status = dlclose(oshlb->shlib_handle);
|
||
|
|
if (0 != status)
|
||
|
|
{
|
||
|
|
dlerr = dlerror();
|
||
|
|
len = STRLEN(dlerr);
|
||
|
|
rts_error(VARLSTCNT(11) ERR_SYSCALL, 5, RTS_ERROR_LITERAL("dlclose()"), CALLFROM, ERR_TEXT, 2, len, dlerr);
|
||
|
|
}
|
||
|
|
free(oshlb);
|
||
|
|
}
|
||
|
|
TREF(open_shlib_root) = NULL;
|
||
|
|
zro_load(TADR(dollar_zroutines)); /* Reloads the shared libraries we need */
|
||
|
|
}
|