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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/common/fd.cc | |
parent | Initial commit. (diff) | |
download | ceph-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.cc | 59 |
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 |