X-Git-Url: https://git.decadent.org.uk/gitweb/?a=blobdiff_plain;f=dak%2Fupdate_db.py;h=dc943503900a672920063f8fca40189d4a81d9e2;hb=203e76d0f6eddac1ad270d68df5e96357d0d0011;hp=33d3ebb9e64a2d94239f6ba5e37da75bc52a35fd;hpb=e4d65e532a06cc2785514cb9c5ebed5e1ec97cc7;p=dak.git

diff --git a/dak/update_db.py b/dak/update_db.py
index 33d3ebb9..dc943503 100755
--- a/dak/update_db.py
+++ b/dak/update_db.py
@@ -26,7 +26,7 @@
 
 ################################################################################
 
-import psycopg2, sys
+import psycopg2, sys, fcntl, os
 import apt_pkg
 import time
 from daklib import database
@@ -115,7 +115,7 @@ Updates dak's database schema to the lastest version. You should disable crontab
             print "Please make sure you have a database backup handy. If you don't, press Ctrl-C now!"
             print ""
             print "Continuing in five seconds ..."
-            #time.sleep(5)
+            time.sleep(5)
             print ""
             print "Attempting to upgrade pre-zero database to zero"
 
@@ -134,7 +134,7 @@ Updates dak's database schema to the lastest version. You should disable crontab
             dakdb = __import__("dakdb", globals(), locals(), ['update'+str(i+1)])
             update_module = getattr(dakdb, "update"+str(i+1))
             update_module.do_update(self)
-            database_revision =+ 1
+            database_revision += 1
 
 ################################################################################
 
@@ -156,8 +156,17 @@ Updates dak's database schema to the lastest version. You should disable crontab
             utils.warn("dak update-db takes no arguments.")
             usage(exit_code=1)
 
+
         self.update_db()
 
+        try:
+            lock_fd = os.open(Cnf["Dinstall::LockFile"], os.O_RDWR | os.O_CREAT)
+            fcntl.lockf(lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
+        except IOError, e:
+            if errno.errorcode[e.errno] == 'EACCES' or errno.errorcode[e.errno] == 'EAGAIN':
+                utils.fubar("Couldn't obtain lock; assuming another 'dak process-unchecked' is already running.")
+
+
 ################################################################################
 
 if __name__ == '__main__':