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mirror of git://sourceware.org/git/lvm2.git synced 2024-12-22 17:35:59 +03:00
lvm2/lib/misc/sharedlib.c
Alasdair Kergon 2293567c8c Fix lvcreate corelog validation.
Add --config for overriding most config file settings from cmdline.
  Quote arguments when printing command line.
  Remove linefeed from 'initialising logging' message.
  Add 'Completed' debug message.
  Don't attempt library exit after reloading config files.
  Always compile with libdevmapper, even if device-mapper is disabled.
2006-05-16 16:48:31 +00:00

61 lines
1.7 KiB
C

/*
* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU General Public License v.2.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "lib.h"
#include "config.h"
#include "lvm-string.h"
#include "sharedlib.h"
#include <limits.h>
#include <sys/stat.h>
#include <dlfcn.h>
void get_shared_library_path(struct cmd_context *cmd, const char *libname,
char *path, size_t path_len)
{
struct stat info;
const char *lib_dir;
/* If libname doesn't begin with '/' then use lib_dir/libname,
* if present */
if (libname[0] == '/' ||
!(lib_dir = find_config_tree_str(cmd, "global/library_dir", 0)) ||
(lvm_snprintf(path, path_len, "%s/%s", lib_dir,
libname) == -1) || stat(path, &info) == -1)
strncpy(path, libname, path_len);
}
void *load_shared_library(struct cmd_context *cmd, const char *libname,
const char *desc, int silent)
{
char path[PATH_MAX];
void *library;
get_shared_library_path(cmd, libname, path, sizeof(path));
log_very_verbose("Opening shared %s library %s", desc, path);
if (!(library = dlopen(path, RTLD_LAZY))) {
if (silent && ignorelockingfailure())
log_verbose("Unable to open external %s library %s",
desc, path);
else
log_error("Unable to open external %s library %s",
desc, path);
}
return library;
}