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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) 2004-2012 Inktank
*
* 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 "include/compat.h"
#include "debug.h"
#include "errno.h"
#ifndef _WIN32
void dump_open_fds(CephContext *cct)
{
#ifdef __APPLE__
const char *fn = "/dev/fd";
#else
const char *fn = PROCPREFIX "/proc/self/fd";
#endif
DIR *d = opendir(fn);
if (!d) {
lderr(cct) << "dump_open_fds unable to open " << fn << dendl;
return;
}
struct dirent *de = nullptr;
int n = 0;
while ((de = ::readdir(d))) {
if (de->d_name[0] == '.')
continue;
char path[PATH_MAX];
snprintf(path, sizeof(path), "%s/%s", fn, de->d_name);
char target[PATH_MAX];
ssize_t r = readlink(path, target, sizeof(target) - 1);
if (r < 0) {
r = -errno;
lderr(cct) << "dump_open_fds unable to readlink " << path << ": " << cpp_strerror(r) << dendl;
continue;
}
target[r] = 0;
lderr(cct) << "dump_open_fds " << de->d_name << " -> " << target << dendl;
n++;
}
lderr(cct) << "dump_open_fds dumped " << n << " open files" << dendl;
closedir(d);
}
#else
void dump_open_fds(CephContext *cct)
{
}
#endif
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