Kernel, libc: Expose processes' UID and GID in pstat()

apps/src/ps.c

@@ -17,8 +17,8 @@ pid_t get_current_max_threads()
 
 void display_process(struct pstat* pstatbuf)
 {
-    printf("%ld %ld %s %s (%ld ms)\n", pstatbuf->pt_pid, pstatbuf->pt_ppid, pstatbuf->pt_name, pstatname(pstatbuf),
+    printf("%d %d %ld %ld %s %s (%ld ms)\n", pstatbuf->pt_uid, pstatbuf->pt_gid, pstatbuf->pt_pid, pstatbuf->pt_ppid,
-           pstatbuf->pt_time);
+           pstatbuf->pt_name, pstatname(pstatbuf), pstatbuf->pt_time);
 }
 
 int try_pstat(pid_t pid, struct pstat* pstatbuf)

kernel/src/thread/Scheduler.cpp

@@ -615,6 +615,8 @@ struct pstat
     char pt_name[128];
     int pt_state;
     long pt_time;
+    uid_t pt_uid;
+    gid_t pt_gid;
 };
 
 void sys_pstat(Context* context, long pid, struct pstat* buf)
@@ -647,6 +649,8 @@ void sys_pstat(Context* context, long pid, struct pstat* buf)
         kpstat->pt_ppid = task->ppid;
         kpstat->pt_state = (int)task->state;
         kpstat->pt_time = (long)task->cpu_time;
+        kpstat->pt_uid = task->uid;
+        kpstat->pt_gid = task->gid;
         strlcpy(kpstat->pt_name, task->name, sizeof(kpstat->pt_name));
         release_user_ref(kpstat);
     }

libs/libc/include/luna/pstat.h

@@ -10,6 +10,8 @@ struct pstat
     char pt_name[128];
     int pt_state;
     long pt_time;
+    uid_t pt_uid;
+    gid_t pt_gid;
 };
 
 #define PT_IDLE 0

libs/libc/src/init.cpp

@@ -57,8 +57,8 @@ extern char* program_invocation_name;
 extern "C" void initialize_libc(int, char** argv)
 {
     check_for_file(STDIN_FILENO, &stdin, "/dev/kbd", "r");
-    check_for_file(STDOUT_FILENO, &stdout, "/dev/console", "w");
+    check_for_file(STDOUT_FILENO, &stdout, "/dev/console", "a");
-    check_for_file(STDERR_FILENO, &stderr, "/dev/console", "w");
+    check_for_file(STDERR_FILENO, &stderr, "/dev/console", "a");
 
     if (argv) program_invocation_name = argv[0];