Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** This program 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

/*

** Ideas from PostgreSQL implementation (src/backend/utils/misc/ps_status.c)

** were used in development of this file. Thanks to PostgreSQL developers!

**/

​

#include "zbxcommon.h"

​

#if defined(__linux__)              /* Linux */

#   define PS_OVERWRITE_ARGV

#elif defined(_AIX)             /* AIX */

#   define PS_OVERWRITE_ARGV

#   define PS_CONCAT_ARGV

#elif defined(__sun) && defined(__SVR4)     /* Solaris */

#   define PS_OVERWRITE_ARGV

#   define PS_APPEND_ARGV

#elif defined(HAVE_SYS_PSTAT_H)         /* HP-UX */

#   define PS_PSTAT_ARGV

#elif defined(__APPLE__) && defined(__MACH__)   /* OS X */

#   include <TargetConditionals.h>

#   if TARGET_OS_MAC == 1 && TARGET_OS_EMBEDDED == 0 && TARGET_OS_IPHONE == 0 && TARGET_IPHONE_SIMULATOR == 0

#       define PS_OVERWRITE_ARGV

#       define PS_DARWIN_ARGV

#   endif

#endif

​

#if defined(PS_DARWIN_ARGV)

#include <crt_externs.h>

#endif

​

#if defined(PS_OVERWRITE_ARGV)

/* external environment we got on startup */

extern char **environ;

static int  argc_ext_copied_first = 0, argc_ext_copied_last = 0, environ_ext_copied = 0;

static char **environ_ext = NULL;

​

/* internal copy of argv[] and environment variables */

static char **argv_int = NULL, **environ_int = NULL;

static char *empty_str = "";

​

/* ps display buffer */

static char *ps_buf = NULL;

static size_t   ps_buf_size = 0, prev_msg_size = 0;

#elif defined(PS_PSTAT_ARGV)

#define PS_BUF_SIZE 512

static char ps_buf[PS_BUF_SIZE], *p_msg = NULL;

static size_t   ps_buf_size = PS_BUF_SIZE, ps_buf_size_msg = PS_BUF_SIZE;

#undef PS_BUF_SIZE

#endif

​