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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2011 New Dream Network
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include "common/code_environment.h"
#include <iostream>
#include "acconfig.h"
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#include <string.h>
code_environment_t g_code_env = CODE_ENVIRONMENT_UTILITY;
extern "C" const char *code_environment_to_str(enum code_environment_t e)
{
switch (e) {
case CODE_ENVIRONMENT_UTILITY:
return "CODE_ENVIRONMENT_UTILITY";
case CODE_ENVIRONMENT_DAEMON:
return "CODE_ENVIRONMENT_DAEMON";
case CODE_ENVIRONMENT_LIBRARY:
return "CODE_ENVIRONMENT_LIBRARY";
default:
return NULL;
}
}
std::ostream &operator<<(std::ostream &oss, const enum code_environment_t e)
{
oss << code_environment_to_str(e);
return oss;
}
#if defined(HAVE_SYS_PRCTL_H) && defined(PR_GET_NAME) /* Since 2.6.11 */
int get_process_name(char *buf, int len)
{
if (len <= 16) {
/* The man page discourages using this prctl with a buffer shorter
* than 16 bytes. With a 16-byte buffer, it might not be
* null-terminated. */
return -ENAMETOOLONG;
}
// FIPS zeroization audit 20191115: this memset is not security related.
memset(buf, 0, len);
return prctl(PR_GET_NAME, buf);
}
#elif defined(HAVE_GETPROGNAME)
int get_process_name(char *buf, int len)
{
if (len <= 0) {
return -EINVAL;
}
const char *progname = getprogname();
if (progname == nullptr || *progname == '\0') {
return -ENOSYS;
}
strncpy(buf, progname, len - 1);
buf[len - 1] = '\0';
return 0;
}
#elif defined(_WIN32)
int get_process_name(char *buf, int len)
{
if (len <= 0) {
return -EINVAL;
}
char full_path[MAX_PATH];
int length = GetModuleFileNameA(nullptr, full_path, sizeof(full_path));
if (length <= 0)
return -ENOSYS;
char* start = strrchr(full_path, '\\');
if (!start)
return -ENOSYS;
start++;
char* end = strstr(start, ".exe");
if (!end)
return -ENOSYS;
if (len <= end - start) {
return -ENAMETOOLONG;
}
memcpy(buf, start, end - start);
buf[end - start] = '\0';
return 0;
}
#else
int get_process_name(char *buf, int len)
{
return -ENOSYS;
}
#endif
std::string get_process_name_cpp()
{
char buf[32];
if (get_process_name(buf, sizeof(buf))) {
return "(unknown)";
}
return std::string(buf);
}
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