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python-psutil/logind_y2038.patch

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From 89b2d1896ffa8e5c9a8d9b89c3af0bb9027ce23b Mon Sep 17 00:00:00 2001
From: Alberto Planas <aplanas@suse.com>
Date: Tue, 22 Aug 2023 15:54:09 +0200
Subject: [PATCH] Use logind instead of utmp because of Y2038
Bi-arch systems line x86-64 present the Y2038 problem, where an overflow
can be produced because some glibc compatibility decissions (see
https://github.com/thkukuk/utmpx/blob/main/Y2038.md for more
information)
This patch uses logind from systemd instead of utmp on Linux systems, if
the systemd version is support the new API (>= 254).
Signed-off-by: Alberto Planas <aplanas@suse.com>
---
INSTALL.rst | 4 +--
psutil/_psutil_linux.c | 81 ++++++++++++++++++++++++++++++++++++++++--
setup.py | 22 ++++++++++++
3 files changed, 102 insertions(+), 5 deletions(-)
Index: psutil-5.9.5/INSTALL.rst
===================================================================
--- psutil-5.9.5.orig/INSTALL.rst
+++ psutil-5.9.5/INSTALL.rst
@@ -17,12 +17,12 @@ Linux (build)
Ubuntu / Debian::
- sudo apt-get install gcc python3-dev
+ sudo apt-get install gcc python3-dev libsystemd-dev
pip install --no-binary :all: psutil
RedHat / CentOS::
- sudo yum install gcc python3-devel
+ sudo yum install gcc python3-devel systemd-devel
pip install --no-binary :all: psutil
Alpine::
Index: psutil-5.9.5/psutil/_psutil_linux.c
===================================================================
--- psutil-5.9.5.orig/psutil/_psutil_linux.c
+++ psutil-5.9.5/psutil/_psutil_linux.c
@@ -14,7 +14,11 @@
#include <stdlib.h>
#include <mntent.h>
#include <features.h>
-#include <utmp.h>
+#ifdef SYSTEMD_LINUX
+ #include <systemd/sd-login.h>
+#else
+ #include <utmp.h>
+#endif
#include <sched.h>
#include <linux/version.h>
#include <sys/syscall.h>
@@ -363,42 +367,102 @@ psutil_proc_cpu_affinity_set(PyObject *s
*/
static PyObject *
psutil_users(PyObject *self, PyObject *args) {
+#ifdef SYSTEMD_LINUX
+ char **sessions_list = NULL;
+#else
struct utmp *ut;
+#endif
PyObject *py_retlist = PyList_New(0);
PyObject *py_tuple = NULL;
PyObject *py_username = NULL;
PyObject *py_tty = NULL;
PyObject *py_hostname = NULL;
PyObject *py_user_proc = NULL;
+ double tstamp = 0.0;
+ pid_t pid = 0;
if (py_retlist == NULL)
return NULL;
+#ifdef SYSTEMD_LINUX
+ int sessions = sd_get_sessions(&sessions_list);
+ for (int i = 0; i < sessions; i++) {
+ const char *session_id = sessions_list[i];
+#else
setutent();
while (NULL != (ut = getutent())) {
+#endif
py_tuple = NULL;
py_user_proc = NULL;
+ #ifdef SYSTEMD_LINUX
+ py_user_proc = Py_True;
+ #else
if (ut->ut_type == USER_PROCESS)
py_user_proc = Py_True;
else
py_user_proc = Py_False;
+ #endif
+
+ #ifdef SYSTEMD_LINUX
+ char *username = NULL;
+ if (sd_session_get_username(session_id, &username) < 0)
+ goto error;
+ py_username = PyUnicode_DecodeFSDefault(username);
+ free(username);
+ #else
py_username = PyUnicode_DecodeFSDefault(ut->ut_user);
+ #endif
if (! py_username)
goto error;
+
+ #ifdef SYSTEMD_LINUX
+ char *tty = NULL;
+ if (sd_session_get_tty(session_id, &tty) < 0) {
+ py_tty = PyUnicode_DecodeFSDefault("n/a");
+ } else {
+ py_tty = PyUnicode_DecodeFSDefault(tty);
+ free(tty);
+ }
+ #else
py_tty = PyUnicode_DecodeFSDefault(ut->ut_line);
+ #endif
if (! py_tty)
goto error;
+ #ifdef SYSTEMD_LINUX
+ char *hostname = NULL;
+ if (sd_session_get_remote_host(session_id, &hostname) < 0)
+ goto error;
+ py_hostname = PyUnicode_DecodeFSDefault(hostname);
+ free(hostname);
+ #else
py_hostname = PyUnicode_DecodeFSDefault(ut->ut_host);
+ #endif
if (! py_hostname)
goto error;
+ #ifdef SYSTEMD_LINUX
+ uint64_t usec = 0;
+ if (sd_session_get_start_time(session_id, &usec) < 0)
+ goto error;
+ tstamp = (double)usec / 1000000.0;
+ #else
+ tstamp = (double)ut->ut_tv.tv_sec;
+ #endif
+
+ #ifdef SYSTEMD_LINUX
+ if (sd_session_get_leader(session_id, &pid) < 0)
+ goto error;
+ #else
+ pid = ut->ut_pid;
+ #endif
+
py_tuple = Py_BuildValue(
"OOOdO" _Py_PARSE_PID,
py_username, // username
py_tty, // tty
py_hostname, // hostname
- (double)ut->ut_tv.tv_sec, // tstamp
+ tstamp, // tstamp
py_user_proc, // (bool) user process
- ut->ut_pid // process id
+ pid // process id
);
if (! py_tuple)
goto error;
@@ -408,8 +472,15 @@ psutil_users(PyObject *self, PyObject *a
Py_CLEAR(py_tty);
Py_CLEAR(py_hostname);
Py_CLEAR(py_tuple);
+ #ifdef SYSTEMD_LINUX
+ free (sessions_list[i]);
+ #endif
}
+#ifdef SYSTEMD_LINUX
+ free(sessions_list);
+#else
endutent();
+#endif
return py_retlist;
error:
@@ -418,7 +489,11 @@ error:
Py_XDECREF(py_hostname);
Py_XDECREF(py_tuple);
Py_DECREF(py_retlist);
+#ifdef SYSTEMD_LINUX
+ free(sessions_list);
+#else
endutent();
+#endif
return NULL;
}
Index: psutil-5.9.5/setup.py
===================================================================
--- psutil-5.9.5.orig/setup.py
+++ psutil-5.9.5/setup.py
@@ -184,6 +184,20 @@ def unix_can_compile(c_code):
shutil.rmtree(tempdir)
+def get_systemd_version():
+ r = subprocess.run(["systemctl", "--version"], capture_output=True)
+ if r.returncode != 0:
+ return 0
+ out = r.stdout.split()
+ if len(out) < 2:
+ return 0
+ version = out[1]
+ try:
+ return int(version)
+ except ValueError:
+ return 0
+
+
if WINDOWS:
def get_winver():
maj, min = sys.getwindowsversion()[0:2]
@@ -302,10 +316,18 @@ elif LINUX:
if not unix_can_compile("#include <linux/ethtool.h>"):
macros.append(("PSUTIL_ETHTOOL_MISSING_TYPES", 1))
+ libraries = []
+ # Systemd >= 254 can replace utmp. See:
+ # https://github.com/thkukuk/utmpx/blob/main/utmp-to-logind.md
+ if get_systemd_version() >= 254:
+ macros.append(("SYSTEMD_LINUX", 1))
+ libraries.append("systemd")
+
macros.append(("PSUTIL_LINUX", 1))
ext = Extension(
'psutil._psutil_linux',
sources=sources + ['psutil/_psutil_linux.c'],
+ libraries=libraries,
define_macros=macros,
**py_limited_api)
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