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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2004-2012 Inktank | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include "include/compat.h" | |
7c673cae FG |
16 | #include "debug.h" |
17 | #include "errno.h" | |
18 | ||
f67539c2 | 19 | #ifndef _WIN32 |
7c673cae FG |
20 | void dump_open_fds(CephContext *cct) |
21 | { | |
11fdf7f2 TL |
22 | #ifdef __APPLE__ |
23 | const char *fn = "/dev/fd"; | |
24 | #else | |
7c673cae | 25 | const char *fn = PROCPREFIX "/proc/self/fd"; |
11fdf7f2 | 26 | #endif |
7c673cae FG |
27 | DIR *d = opendir(fn); |
28 | if (!d) { | |
29 | lderr(cct) << "dump_open_fds unable to open " << fn << dendl; | |
30 | return; | |
31 | } | |
32 | struct dirent *de = nullptr; | |
33 | ||
34 | int n = 0; | |
35 | while ((de = ::readdir(d))) { | |
36 | if (de->d_name[0] == '.') | |
37 | continue; | |
38 | char path[PATH_MAX]; | |
39 | snprintf(path, sizeof(path), "%s/%s", fn, de->d_name); | |
40 | char target[PATH_MAX]; | |
41 | ssize_t r = readlink(path, target, sizeof(target) - 1); | |
42 | if (r < 0) { | |
43 | r = -errno; | |
44 | lderr(cct) << "dump_open_fds unable to readlink " << path << ": " << cpp_strerror(r) << dendl; | |
45 | continue; | |
46 | } | |
47 | target[r] = 0; | |
48 | lderr(cct) << "dump_open_fds " << de->d_name << " -> " << target << dendl; | |
49 | n++; | |
50 | } | |
51 | lderr(cct) << "dump_open_fds dumped " << n << " open files" << dendl; | |
52 | ||
53 | closedir(d); | |
54 | } | |
f67539c2 TL |
55 | #else |
56 | void dump_open_fds(CephContext *cct) | |
57 | { | |
58 | } | |
59 | #endif |