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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 <sys/types.h>
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
#include "common/debug.h"
#include "common/errno.h"
#include "fd.h"
void dump_open_fds(CephContext *cct)
{
const char *fn = "/proc/self/fd";
DIR *d = opendir(fn);
if (!d) {
lderr(cct) << "dump_open_fds unable to open " << fn << dendl;
return;
}
struct dirent de, *pde = 0;
int n = 0;
while (readdir_r(d, &de, &pde) >= 0) {
if (pde == NULL)
break;
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));
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);
}
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