1 /* Copyright (C) 2021 Free Software Foundation, Inc.
2    Contributed by Oracle.
3 
4    This file is part of GNU Binutils.
5 
6    This program is free software; you can redistribute it and/or modify
7    it under the terms of the GNU General Public License as published by
8    the Free Software Foundation; either version 3, or (at your option)
9    any later version.
10 
11    This program is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14    GNU General Public License for more details.
15 
16    You should have received a copy of the GNU General Public License
17    along with this program; if not, write to the Free Software
18    Foundation, 51 Franklin Street - Fifth Floor, Boston,
19    MA 02110-1301, USA.  */
20 
21 /* Lineage events for process fork, exec, etc. */
22 
23 #ifndef DESCENDANTS_H
24 #define DESCENDANTS_H
25 
26 #include <dlfcn.h>
27 #include <errno.h>
28 #include <fcntl.h>
29 #include <alloca.h>
30 #include <assert.h>
31 
32 #include "gp-defs.h"
33 #include "gp-experiment.h"
34 #include "collector.h"
35 #include "memmgr.h"
36 #include "cc_libcollector.h"
37 #include "tsd.h"
38 
39 /* configuration, not changed after init. */
40 typedef enum
41 {
42   LM_DORMANT        = -2,   /* env vars preserved, not recording */
43   LM_CLOSED         = -1,   /* env vars cleared, not recording */
44   LM_TRACK_LINEAGE  = 1,    /* env vars preserved, recording */
45 } line_mode_t;
46 
47 extern line_mode_t line_mode;
48 extern int user_follow_mode;
49 extern int java_mode;
50 extern int dbg_current_mode; 	/* for debug only */
51 extern unsigned line_key;
52 extern char **sp_env_backup;
53 
54 #define INIT_REENTRANCE(x)  ((x) = __collector_tsd_get_by_key (line_key))
55 #define CHCK_REENTRANCE(x)  (((INIT_REENTRANCE(x)) == NULL) || (*(x) != 0))
56 #define PUSH_REENTRANCE(x)  ((*(x))++)
57 #define POP_REENTRANCE(x)   ((*(x))--)
58 
59 /* environment variables that must be forwarded to descendents */
60 #define SP_COLLECTOR_PARAMS         "SP_COLLECTOR_PARAMS"
61 #define SP_COLLECTOR_EXPNAME        "SP_COLLECTOR_EXPNAME"
62 #define SP_COLLECTOR_FOLLOW_SPEC    "SP_COLLECTOR_FOLLOW_SPEC"
63 #define SP_COLLECTOR_FOUNDER        "SP_COLLECTOR_FOUNDER"
64 #define SP_PRELOAD_STRINGS          "SP_COLLECTOR_PRELOAD"
65 #define LD_PRELOAD_STRINGS          "LD_PRELOAD"
66 #define SP_LIBPATH_STRINGS          "SP_COLLECTOR_LIBRARY_PATH"
67 #define LD_LIBPATH_STRINGS          "LD_LIBRARY_PATH"
68 #define JAVA_TOOL_OPTIONS          "JAVA_TOOL_OPTIONS"
69 #define COLLECTOR_JVMTI_OPTION     "-agentlib:gp-collector"
70 
71 extern int __collector_linetrace_shutdown_hwcs_6830763_XXXX;
72 extern void __collector_env_unset (char *envp[]);
73 extern void __collector_env_save_preloads ();
74 extern char ** __collector_env_backup ();
75 extern void __collector_env_backup_free ();
76 extern void __collector_env_update (char *envp[]);
77 extern void __collector_env_print (char *label);
78 extern void __collector_env_printall (char *label, char *envp[]);
79 extern char ** __collector_env_allocate (char *const old_env[], int allocate_env);
80 
81 #endif
82