liblttng-ust-baddr/lttng-ust-baddr.c

   1 /*
   2  * Copyright (C) 2013  Paul Woegerer <paul_woegerer@mentor.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  17  */
  18
  19 #define _GNU_SOURCE
  20 #include <dlfcn.h>
  21 #include <link.h>
  22
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <sys/stat.h>
  26 #include <unistd.h>
  27 #include <limits.h>
  28 #include <stdlib.h>
  29 #include <errno.h>
  30 #include <stdint.h>
  31 #include <stddef.h>
  32 #include <stdio.h>
  33 #include "usterr.h"
  34
  35 #define TRACEPOINT_DEFINE
  36 #include "ust_baddr.h"
  37
  38 int
  39 lttng_ust_push_baddr(void *so_base, const char *so_name)
  40 {
  41         char resolved_path[PATH_MAX];
  42         struct stat sostat;
  43
  44         if (!realpath(so_name, resolved_path)) {
  45                 ERR("could not resolve path '%s'", so_name);
  46                 return 0;
  47         }
  48
  49         if (stat(resolved_path, &sostat)) {
  50                 ERR("could not access file status for %s", resolved_path);
  51                 return 0;
  52         }
  53
  54         tracepoint(ust_baddr, push,
  55                 so_base, resolved_path, sostat.st_size, sostat.st_mtime);
  56         return 0;
  57 }
  58
  59 int
  60 lttng_ust_pop_baddr(void *so_base)
  61 {
  62         tracepoint(ust_baddr, pop, so_base);
  63         return 0;
  64 }