Fix: invalid discarded events on start/stop without event production
[lttng-tools.git] / src / common / compat / getenv.h
1 #ifndef _COMPAT_GETENV_H
2 #define _COMPAT_GETENV_H
3
4 /*
5 * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
6 *
7 * SPDX-License-Identifier: GPL-2.0-only
8 *
9 */
10
11 #include <stdlib.h>
12 #include <unistd.h>
13 #include <sys/types.h>
14 #include <common/error.h>
15
16 static inline
17 int lttng_is_setuid_setgid(void)
18 {
19 return geteuid() != getuid() || getegid() != getgid();
20 }
21
22 static inline
23 char *lttng_secure_getenv(const char *name)
24 {
25 if (lttng_is_setuid_setgid()) {
26 WARN("Getting environment variable '%s' from setuid/setgid binary refused for security reasons.",
27 name);
28 return NULL;
29 }
30 return getenv(name);
31 }
32
33 #endif /* _COMPAT_GETENV_H */
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