Fix BZ #21654 - grp-merge.c alignment

[thirdparty/glibc.git] / hurd / hurdprio.c

diff --git a/hurd/hurdprio.c b/hurd/hurdprio.c
index 9c9ed2ba7e11b96431792fa15b48c500e3eb2d24..5ea46b633cb79f14094cb6ed5b6fcdd05e11f0a5 100644 (file)
--- a/hurd/hurdprio.c
+++ b/hurd/hurdprio.c
@@ -1,24 +1,25 @@
 /* Support code for dealing with priorities in the Hurd.
-Copyright (C) 1994, 1995 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+   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 Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   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
-Library General Public License for more details.
+   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 Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   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/resource.h>
 #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,
@@ -26,7 +27,7 @@ _hurd_priority_which_map (enum __priority_which which, int who,
                          int pi_flags)
 {
   mach_msg_type_number_t npids = 64, i;
-  pid_t pidbuf[npids], *pids;
+  pid_t pidbuf[npids], *pids = pidbuf;
   error_t err;
   struct procinfo *pip;
   int pibuf[sizeof *pip + 5 * sizeof (pip->threadinfos[0])], *pi = pibuf;
@@ -34,62 +35,54 @@ _hurd_priority_which_map (enum __priority_which which, int who,
 
   switch (which)
     {
+    default:
+      return EINVAL;
+
     case PRIO_PROCESS:
-      npids = 1;
-      pids[0] = who;
-      err = 0;
+      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));
-      break;
-
-    default:
-      return EINVAL;
-    }
-
-  for (i = 0; !err && i < npids; ++i)
-    {
-      if (which == PRIO_USER)
+      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;
-         if (err = __USEPORT (PROC, __proc_getprocinfo (port, pids[i],
-                                                        pi_flags,
-                                                        &pi, &pisize,
-                                                        &tw, &twsz)))
-           continue;
-         if (twsz)
-           /* Gratuitous.  */
-           __vm_deallocate (__mach_task_self (), tw, twsz);
-         if (pi != oldpi && oldpi != pibuf)
-           /* Old buffer from last call was not reused; free it.  */
-           __vm_deallocate (__mach_task_self (),
-                            (vm_address_t) oldpi, oldpisize * sizeof pi[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)
-           continue;
+             pip = (struct procinfo *) pi;
+             if (pip->owner == (uid_t) who)
+               err = (*function) (pids[i], pip);
+           }
        }
-      else
-       pip = NULL;
-
-      err = (*function) (pids[i], pip);
+      break;
     }
 
   if (pids != pidbuf)
-    __vm_deallocate (__mach_task_self (),
-                    (vm_address_t) pids, npids * sizeof pids[0]);
+    __munmap (pids, npids * sizeof pids[0]);
   if (pi != pibuf)
-    __vm_deallocate (__mach_task_self (),
-                    (vm_address_t) pi, pisize * sizeof pi[0]);
+    __munmap (pi, pisize * sizeof pi[0]);
 
   return err;
 }