Prepare the procfs translator to be merged into the Hurd sourcesHEADmaster

Move the procfs translator to its own subdirectory 'procfs'.

This is the last commit to this repository.  Development of the procfs
translator will continue in the main Hurd repository.

* procfs/Makefile: Replace the standalone Makefile with the one from
the Debian packaging repository.

1 files changed, 94 insertions, 0 deletions

diff --git a/procfs/proclist.c b/procfs/proclist.c
new file mode 100644
index 0000000..58b942d
--- /dev/null
+++ b/procfs/proclist.c
@@ -0,0 +1,94 @@
+/* Hurd /proc filesystem, list of processes as a directory.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   The GNU Hurd 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <mach.h>
+#include <hurd/process.h>
+#include <ps.h>
+#include "procfs.h"
+#include "process.h"
+
+#define PID_STR_SIZE (3 * sizeof (pid_t) + 1)
+
+static error_t
+proclist_get_contents (void *hook, char **contents, ssize_t *contents_len)
+{
+  struct ps_context *pc = hook;
+  pidarray_t pids;
+  mach_msg_type_number_t num_pids;
+  error_t err;
+  int i;
+
+  num_pids = 0;
+  err = proc_getallpids (pc->server, &pids, &num_pids);
+  if (err)
+    return EIO;
+
+  *contents = malloc (num_pids * PID_STR_SIZE);
+  if (*contents)
+    {
+      *contents_len = 0;
+      for (i=0; i < num_pids; i++)
+	{
+	  int n = sprintf (*contents + *contents_len, "%d", pids[i]);
+	  assert (n >= 0);
+	  *contents_len += (n + 1);
+	}
+    }
+  else
+    err = ENOMEM;
+
+  vm_deallocate (mach_task_self (), (vm_address_t) pids, num_pids * sizeof pids[0]);
+  return err;
+}
+
+static error_t
+proclist_lookup (void *hook, const char *name, struct node **np)
+{
+  struct ps_context *pc = hook;
+  char *endp;
+  pid_t pid;
+
+  /* Self-lookups should not end up here. */
+  assert (name[0]);
+
+  /* No leading zeros allowed */
+  if (name[0] == '0' && name[1])
+    return ENOENT;
+
+  pid = strtol (name, &endp, 10);
+  if (*endp)
+    return ENOENT;
+
+  return process_lookup_pid (pc, pid, np);
+}
+
+struct node *
+proclist_make_node (struct ps_context *pc)
+{
+  static const struct procfs_node_ops ops = {
+    .get_contents = proclist_get_contents,
+    .lookup = proclist_lookup,
+    .cleanup_contents = procfs_cleanup_contents_with_free,
+  };
+  return procfs_make_node (&ops, pc);
+}
+