-/*
- * Copyright (C) 2013 Paul Woegerer <paul_woegerer@mentor.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#define _GNU_SOURCE
-#include <dlfcn.h>
-#include <link.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <stdint.h>
-#include <stddef.h>
-#include <stdio.h>
-#include "usterr.h"
-
-#include "lttng-ust-baddr.h"
-
-#define TRACEPOINT_DEFINE
-#include "ust_baddr_statedump.h"
-
-static int
-extract_soinfo_events(struct dl_phdr_info *info, size_t size, void *data)
-{
- int j;
- int num_loadable_segment = 0;
-
- for (j = 0; j < info->dlpi_phnum; j++) {
- char resolved_path[PATH_MAX];
- struct stat sostat;
- void *base_addr_ptr;
-
- if (info->dlpi_phdr[j].p_type != PT_LOAD)
- continue;
-
- /* Calculate virtual memory address of the loadable segment */
- base_addr_ptr = (void *) info->dlpi_addr
- + info->dlpi_phdr[j].p_vaddr;
-
- num_loadable_segment += 1;
- if ((info->dlpi_name == NULL || info->dlpi_name[0] == 0)
- && num_loadable_segment == 1) {
- /*
- * If the iterated element is the executable itself we
- * have to use Dl_info to determine its full path
- */
- Dl_info dl_info = { 0 };
- if (!dladdr(base_addr_ptr, &dl_info))
- return 0;
- if (!realpath(dl_info.dli_fname, resolved_path))
- return 0;
- } else {
- /*
- * For regular dl_phdr_info entries we have to check if
- * the path to the shared object really exists
- */
- if (!realpath(info->dlpi_name, resolved_path)) {
- /* Found vDSO, put the 'path' into brackets */
- snprintf(resolved_path, PATH_MAX - 1, "[%s]",
- info->dlpi_name);
- }
- }
-
- if (stat(resolved_path, &sostat)) {
- sostat.st_size = 0;
- sostat.st_mtime = -1;
- }
-
- tracepoint(ust_baddr_statedump, soinfo,
- (struct lttng_session *) data, base_addr_ptr,
- resolved_path, sostat.st_size, sostat.st_mtime);
-
- /*
- * We are only interested in the base address (lowest virtual
- * address associated with the memory image), skip the rest
- */
- break;
- }
- return 0;
-}
-
-int
-lttng_ust_baddr_statedump(struct lttng_session *session)
-{
- if (getenv("LTTNG_UST_WITHOUT_BADDR_STATEDUMP"))
- return 0;
- /*
- * Iterate through the list of currently loaded shared objects and
- * generate events for loadable segments using extract_soinfo_events
- */
- dl_iterate_phdr(extract_soinfo_events, session);
- return 0;
-}