1 files changed, 88 insertions, 0 deletions
diff --git a/REORG.TODO/hurd/hurdprio.c b/REORG.TODO/hurd/hurdprio.c
new file mode 100644
index 0000000000..5ea46b633c
--- /dev/null
+++ b/REORG.TODO/hurd/hurdprio.c
@@ -0,0 +1,88 @@
+/* Support code for dealing with priorities in the Hurd.
+   Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <hurd.h>
+#include <hurd/resource.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+error_t
+_hurd_priority_which_map (enum __priority_which which, int who,
+			  error_t (*function) (pid_t, struct procinfo *),
+			  int pi_flags)
+{
+  mach_msg_type_number_t npids = 64, i;
+  pid_t pidbuf[npids], *pids = pidbuf;
+  error_t err;
+  struct procinfo *pip;
+  int pibuf[sizeof *pip + 5 * sizeof (pip->threadinfos[0])], *pi = pibuf;
+  mach_msg_type_number_t pisize = sizeof (pibuf) / sizeof (int);
+
+  switch (which)
+    {
+    default:
+      return EINVAL;
+
+    case PRIO_PROCESS:
+      err = (*function) (who ?: getpid (), 0); /* XXX special-case self? */
+      break;
+
+    case PRIO_PGRP:
+      err = __USEPORT (PROC, __proc_getpgrppids (port, who, &pids, &npids));
+      for (i = 0; !err && i < npids; ++i)
+	err = (*function) (pids[i], 0);
+      break;
+
+    case PRIO_USER:
+      if (who == 0)
+	who = geteuid ();
+      err = __USEPORT (PROC, __proc_getallpids (port, &pids, &npids));
+      for (i = 0; !err && i < npids; ++i)
+	{
+	  /* Get procinfo to check the owner.  */
+	  int *oldpi = pi;
+	  mach_msg_type_number_t oldpisize = pisize;
+	  char *tw = 0;
+	  size_t twsz = 0;
+	  err = __USEPORT (PROC, __proc_getprocinfo (port, pids[i],
+						     &pi_flags,
+						     &pi, &pisize,
+						     &tw, &twsz));
+	  if (!err)
+	    {
+	      if (twsz)		/* Gratuitous.  */
+		__munmap (tw, twsz);
+	      if (pi != oldpi && oldpi != pibuf)
+		/* Old buffer from last call was not reused; free it.  */
+		__munmap (oldpi, oldpisize * sizeof pi[0]);
+
+	      pip = (struct procinfo *) pi;
+	      if (pip->owner == (uid_t) who)
+		err = (*function) (pids[i], pip);
+	    }
+	}
+      break;
+    }
+
+  if (pids != pidbuf)
+    __munmap (pids, npids * sizeof pids[0]);
+  if (pi != pibuf)
+    __munmap (pi, pisize * sizeof pi[0]);
+
+  return err;
+}