[med-svn] [Git][med-team/libsonlib][master] Include sonLib_daemonize.py into missing-sources

[Shayan Doust]

Shayan Doust pushed to branch master at Debian Med / libsonlib


Commits:
e99bb276 by Shayan Doust at 2020-06-23T16:10:37+01:00
Include sonLib_daemonize.py into missing-sources

- - - - -


2 changed files:

- + debian/missing-sources/sonLib_daemonize.py
- + debian/source/include-binaries


Changes:

=====================================
debian/missing-sources/sonLib_daemonize.py
=====================================
@@ -0,0 +1,103 @@
+#!/usr/bin/env python
+
+# Glenn Hickey 2011
+#
+#Released under the MIT license, see LICENSE.txt
+"""
+launch a command as a daemon. 
+
+mostly copied from (and see for comments & explanation):
+
+########################################################################
+Copyright (C) 2005 Chad J. Schroeder
+http://code.activestate.com/recipes/278731/
+
+Disk And Execution MONitor (Daemon)
+
+Configurable daemon behaviors:
+
+   1.) The current working directory set to the "/" directory.
+   2.) The current file creation mode mask set to 0.
+   3.) Close all open files (1024). 
+   4.) Redirect standard I/O streams to "/dev/null".
+
+A failed call to fork() now raises an exception.
+
+References:
+   1) Advanced Programming in the Unix Environment: W. Richard Stevens
+   2) Unix Programming Frequently Asked Questions:
+         http://www.erlenstar.demon.co.uk/unix/faq_toc.html
+########################################################################
+
+handy to break out of a jobTree dependence (which the regular 
+os.system and subprocess.Popen can't do on their own)
+
+takes single argument: the command line to execute
+be careful: the command line is not executed in a shell
+
+example:  sonLib_daemonize.py 'ktserver -port 26'
+
+"""
+
+import os
+import sys
+import resource
+import signal
+import subprocess
+from sonLib.bioio import system
+
+# Default daemon parameters.
+# File mode creation mask of the daemon.
+# use sonLib.bioio.spawnDaemon() for a python interface
+ 
+UMASK = 0
+
+# Default working directory for the daemon.
+WORKDIR = "/"
+
+# Default maximum for the number of available file descriptors.
+MAXFD = 1024
+
+# The standard I/O file descriptors are redirected to /dev/null by default.
+if (hasattr(os, "devnull")):
+   REDIRECT_TO = os.devnull
+else:
+   REDIRECT_TO = "/dev/null"
+   
+if __name__ == '__main__':
+    if len(sys.argv) != 2:
+        raise Exception, "%s: Wrong number of arguments" % sys.argv[0]
+    
+    pid = os.fork()
+    if pid > 0:
+        os._exit(0)
+    
+    os.chdir("/")
+    os.setsid()
+    
+    signal.signal(signal.SIGHUP, signal.SIG_IGN)
+    os.umask(0)
+    pid = os.fork()
+    if pid > 0:
+        os._exit(0)
+    
+    maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1]
+    if (maxfd == resource.RLIM_INFINITY):
+        maxfd = MAXFD
+  
+    # Iterate through and close all file descriptors.
+    for fd in range(0, maxfd):
+        try:
+            os.close(fd)
+        except OSError:    # ERROR, fd wasn't open to begin with (ignored)
+            pass
+
+    # Redirect the standard I/O file descriptors to the specified file.  Since
+    os.open(REDIRECT_TO, os.O_RDWR)    # standard input (0)
+
+    # Duplicate standard input to standard output and standard error.
+    os.dup2(0, 1)            # standard output (1)
+    os.dup2(0, 2)            # standard error (2)
+    
+    retVal = subprocess.call(sys.argv[1].split(), shell=False, bufsize=-1)
+    sys.exit(retVal) 


=====================================
debian/source/include-binaries
=====================================
@@ -0,0 +1 @@
+debian/missing-sources/sonLib_daemonize.py



View it on GitLab: https://salsa.debian.org/med-team/libsonlib/-/commit/e99bb276b45fbbaa46bf85b01acc8dce9c95652c

-- 
View it on GitLab: https://salsa.debian.org/med-team/libsonlib/-/commit/e99bb276b45fbbaa46bf85b01acc8dce9c95652c
You're receiving this email because of your account on salsa.debian.org.


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://alioth-lists.debian.net/pipermail/debian-med-commit/attachments/20200623/e15c47b9/attachment-0001.html>