From a72bc5e6bf45cea7fbb349e53e05dc7a580be4de Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@sudo.ws>
Date: Sun, 19 Feb 2023 07:18:37 -0700
Subject: [PATCH] get_starttime: add support for GNU Hurd using the mach
 task_info call. This is currently Hurd-specific but could be made
 Mach-generic as long as the equivalent of pid2task() is available.

---
 .../regress/starttime/check_starttime.c       |  2 +-
 plugins/sudoers/starttime.c                   | 31 +++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/plugins/sudoers/regress/starttime/check_starttime.c b/plugins/sudoers/regress/starttime/check_starttime.c
index b4095d9ba..c07396ef2 100644
--- a/plugins/sudoers/regress/starttime/check_starttime.c
+++ b/plugins/sudoers/regress/starttime/check_starttime.c
@@ -32,7 +32,7 @@
 
 sudo_dso_public int main(int argc, char *argv[]);
 
-#if defined(sudo_kinfo_proc) || defined(__linux__) || defined(HAVE_STRUCT_PSINFO_PR_TTYDEV) || defined(HAVE_PSTAT_GETPROC)
+#if defined(sudo_kinfo_proc) || defined(__linux__) || defined(HAVE_STRUCT_PSINFO_PR_TTYDEV) || defined(HAVE_PSTAT_GETPROC) || defined(__gnu_hurd__)
 
 #ifdef __linux__
 static int
diff --git a/plugins/sudoers/starttime.c b/plugins/sudoers/starttime.c
index 52ebac14b..44d153116 100644
--- a/plugins/sudoers/starttime.c
+++ b/plugins/sudoers/starttime.c
@@ -47,6 +47,12 @@
 # include <sys/pstat.h>
 #endif
 
+#if defined(__gnu_hurd__)
+# include <hurd.h>
+# include <mach/task_info.h>
+# include <mach/time_value.h>
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -298,6 +304,31 @@ get_starttime(pid_t pid, struct timespec *starttime)
 	"unable to get start time for %d via pstat_getproc", (int)pid);
     debug_return_int(-1);
 }
+#elif defined(__gnu_hurd__)
+int
+get_starttime(pid_t pid, struct timespec *starttime)
+{
+    mach_msg_type_number_t count;
+    struct task_basic_info info;
+    kern_return_t error;
+    task_t target;
+    debug_decl(get_starttime, SUDOERS_DEBUG_UTIL);
+
+    target = pid2task(pid);
+    if (target != MACH_PORT_NULL) {
+	count = sizeof(info) / sizeof(integer_t);
+	error = task_info(target, TASK_BASIC_INFO, (task_info_t)&info, &count);
+	if (error == KERN_SUCCESS) {
+	    starttime->tv_sec = info.creation_time.seconds;
+	    starttime->tv_nsec = info.creation_time.microseconds * 1000;
+	    debug_return_int(0);
+	}
+    }
+
+    sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO|SUDO_DEBUG_ERRNO,
+	"unable to get start time for %d via task_info", (int)pid);
+    debug_return_int(-1);
+}
 #else
 int
 get_starttime(pid_t pid, struct timespec *starttime)