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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
commite6918187568dbd01842d8d1d2c808ce16a894239 (patch)
tree64f88b554b444a49f656b6c656111a145cbbaa28 /src/common/fd.cc
parentInitial commit. (diff)
downloadceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz
ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/common/fd.cc')
-rw-r--r--src/common/fd.cc59
1 files changed, 59 insertions, 0 deletions
diff --git a/src/common/fd.cc b/src/common/fd.cc
new file mode 100644
index 000000000..89d18940b
--- /dev/null
+++ b/src/common/fd.cc
@@ -0,0 +1,59 @@
+// -*- 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