From 2db247f179c3ab0f350bb3c9848ccc990ad761bc Mon Sep 17 00:00:00 2001
From: Guido Günther <agx@sigxcpu.org>
Date: Fri, 18 Apr 2014 12:06:46 +0200
Subject: Split out and test Process

---
 whatmaps/command.py | 52 ++----------------------------------
 whatmaps/process.py | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+), 50 deletions(-)
 create mode 100644 whatmaps/process.py

(limited to 'whatmaps')

diff --git a/whatmaps/command.py b/whatmaps/command.py
index 98de395..502f7d3 100755
--- a/whatmaps/command.py
+++ b/whatmaps/command.py
@@ -34,61 +34,13 @@ try:
 except ImportError:
     lsb_release = None
 
+from whatmaps.process import Process
+
 
 class PkgError(Exception):
     pass
 
 
-class Process(object):
-    """A process - Linux only so far, needs /proc mounted"""
-    deleted_re = re.compile(r"(?P<exe>.*) \(deleted\)$")
-
-    def __init__(self, pid):
-        self.pid = pid
-        self.mapped = []
-        try:
-            self.exe = os.readlink('/proc/%d/exe' % self.pid)
-            m = self.deleted_re.match(self.exe)
-            if m:
-                self.exe = m.group('exe')
-                logging.debug("Using deleted exe %s", self.exe)
-            if not os.path.exists(self.exe):
-                logging.debug("%s doesn't exist", self.exe)
-            self.cmdline = open('/proc/%d/cmdline' % self.pid).read()
-        except OSError:
-            self.exe = None
-            self.cmdline = None
-
-    def _read_maps(self):
-        """Read the SOs from /proc/<pid>/maps"""
-        try:
-            f = file('/proc/%d/maps' % self.pid)
-        except IOError as e:
-            # ignore killed process
-            if e.errno != errno.ENOENT:
-                raise
-            return
-        for line in f:
-            try:
-                so = line.split()[5].strip()
-                self.mapped.append(so)
-            except IndexError:
-                pass
-
-    def maps(self, path):
-        """Check if the process maps the object at path"""
-        if not self.mapped:
-            self._read_maps()
-
-        if path in self.mapped:
-            return True
-        else:
-            return False
-
-    def __repr__(self):
-        return "<Process object pid:%d>" % self.pid
-
-
 class Distro(object):
     """
     A distribution
diff --git a/whatmaps/process.py b/whatmaps/process.py
new file mode 100644
index 0000000..3fe23f3
--- /dev/null
+++ b/whatmaps/process.py
@@ -0,0 +1,77 @@
+#!/usr/bin/python -u
+# vim: set fileencoding=utf-8 :
+#
+# (C) 2010,2014 Guido Günther <agx@sigxcpu.org>
+#   This program 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 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program 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, see <http://www.gnu.org/licenses/>.
+#
+
+import errno
+import logging
+import os
+import re
+
+class Process(object):
+    """A process - Linux only so far, needs /proc mounted"""
+    deleted_re = re.compile(r"(?P<exe>.*) \(deleted\)$")
+
+    def __init__(self, pid, procfs=None):
+        self.procfs = procfs or '/proc'
+        self.pid = pid
+        self.mapped = []
+        self.deleted = False
+        try:
+            self.exe = os.readlink(self._procpath(str(self.pid), 'exe'))
+            m = self.deleted_re.match(self.exe)
+            if m:
+                self.exe = m.group('exe')
+                self.deleted = True
+                logging.error("Using deleted exe %s", self.exe)
+            if not os.path.exists(self.exe):
+                logging.debug("%s doesn't exist", self.exe)
+            self.cmdline = open(self._procpath('%d/cmdline' % self.pid)).read()
+        except OSError:
+            self.exe = None
+            self.cmdline = None
+
+    def _procpath(self, *args):
+        """
+        Return a path relative to the current procfs bsae
+        """
+        return os.path.join(self.procfs, *args)
+
+    def _read_maps(self):
+        """Read the SOs from /proc/<pid>/maps"""
+        try:
+            f = file(self._procpath('%d/maps' % self.pid))
+        except IOError as e:
+            # ignore killed process
+            if e.errno != errno.ENOENT:
+                raise
+            return
+        for line in f:
+            try:
+                so = line.split()[5].strip()
+                self.mapped.append(so)
+            except IndexError:
+                pass
+
+    def maps(self, path):
+        """Check if the process maps the object at path"""
+        if not self.mapped:
+            self._read_maps()
+
+        return True if path in self.mapped else False
+
+    def __repr__(self):
+        return "<Process object pid:%d>" % self.pid
-- 
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