From e873ff83afba08ff61a5e98ab90d5ee05ab5c601 Mon Sep 17 00:00:00 2001
From: Jeremie Koenig <jk@jk.fr.eu.org>
Date: Mon, 23 Aug 2010 05:44:37 +0000
Subject: Add statm to process directories

* process.c: Add the statm file.
---
 process.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/process.c b/process.c
index f7a7a57..4404d08 100644
--- a/process.c
+++ b/process.c
@@ -105,6 +105,20 @@ process_file_gc_stat (struct proc_stat *ps, size_t *len)
   return len >= 0 ? contents : NULL;
 }
 
+static char *
+process_file_gc_statm (struct proc_stat *ps, size_t *len)
+{
+  task_basic_info_t tbi = proc_stat_task_basic_info (ps);
+  char *contents;
+
+  *len = asprintf (&contents,
+      "%lu %lu 0 0 0 0 0\n",
+      tbi->virtual_size  / sysconf(_SC_PAGE_SIZE),
+      tbi->resident_size / sysconf(_SC_PAGE_SIZE));
+
+  return len >= 0 ? contents : NULL;
+}
+
 
 /* Describes a file in a process directory.  This is used as an "entry hook"
  * for our procfs_dir entry table, passed to process_file_make_node.  */
@@ -217,6 +231,15 @@ static struct procfs_dir_entry entries[] = {
       .mode = 0400,
     },
   },
+  {
+    .name = "statm",
+    .make_node = process_file_make_node,
+    .hook = & (struct process_file_desc) {
+      .get_contents = process_file_gc_statm,
+      .needs = PSTAT_TASK_BASIC,
+      .mode = 0444,
+    },
+  },
   {}
 };
 
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