equal
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inserted
replaced
1 import os |
1 import os |
2 import sys |
2 import sys |
3 |
3 |
4 if os.name == 'posix': |
4 if os.name == 'posix': |
5 def become_daemon(our_home_dir='.', out_log='/dev/null', err_log='/dev/null'): |
5 def become_daemon(our_home_dir='.', out_log='/dev/null', |
|
6 err_log='/dev/null', umask=022): |
6 "Robustly turn into a UNIX daemon, running in our_home_dir." |
7 "Robustly turn into a UNIX daemon, running in our_home_dir." |
7 # First fork |
8 # First fork |
8 try: |
9 try: |
9 if os.fork() > 0: |
10 if os.fork() > 0: |
10 sys.exit(0) # kill off parent |
11 sys.exit(0) # kill off parent |
11 except OSError, e: |
12 except OSError, e: |
12 sys.stderr.write("fork #1 failed: (%d) %s\n" % (e.errno, e.strerror)) |
13 sys.stderr.write("fork #1 failed: (%d) %s\n" % (e.errno, e.strerror)) |
13 sys.exit(1) |
14 sys.exit(1) |
14 os.setsid() |
15 os.setsid() |
15 os.chdir(our_home_dir) |
16 os.chdir(our_home_dir) |
16 os.umask(0) |
17 os.umask(umask) |
17 |
18 |
18 # Second fork |
19 # Second fork |
19 try: |
20 try: |
20 if os.fork() > 0: |
21 if os.fork() > 0: |
21 os._exit(0) |
22 os._exit(0) |
30 os.dup2(so.fileno(), sys.stdout.fileno()) |
31 os.dup2(so.fileno(), sys.stdout.fileno()) |
31 os.dup2(se.fileno(), sys.stderr.fileno()) |
32 os.dup2(se.fileno(), sys.stderr.fileno()) |
32 # Set custom file descriptors so that they get proper buffering. |
33 # Set custom file descriptors so that they get proper buffering. |
33 sys.stdout, sys.stderr = so, se |
34 sys.stdout, sys.stderr = so, se |
34 else: |
35 else: |
35 def become_daemon(our_home_dir='.', out_log=None, err_log=None): |
36 def become_daemon(our_home_dir='.', out_log=None, err_log=None, umask=022): |
36 """ |
37 """ |
37 If we're not running under a POSIX system, just simulate the daemon |
38 If we're not running under a POSIX system, just simulate the daemon |
38 mode by doing redirections and directory changing. |
39 mode by doing redirections and directory changing. |
39 """ |
40 """ |
40 os.chdir(our_home_dir) |
41 os.chdir(our_home_dir) |
41 os.umask(0) |
42 os.umask(umask) |
42 sys.stdin.close() |
43 sys.stdin.close() |
43 sys.stdout.close() |
44 sys.stdout.close() |
44 sys.stderr.close() |
45 sys.stderr.close() |
45 if err_log: |
46 if err_log: |
46 sys.stderr = open(err_log, 'a', 0) |
47 sys.stderr = open(err_log, 'a', 0) |