|Summary:||/usr/sbin/daemon should support stdin,stdout,stderr redirect to files other than /dev/null|
|Product:||Base System||Reporter:||TAO ZHOU <zhoutao>|
|Component:||bin||Assignee:||freebsd-bugs mailing list <bugs>|
|Severity:||Affects Some People||CC:||0mp, ygy|
Description TAO ZHOU 2019-03-01 01:06:59 UTC
The daemon command has an option `-f`, which, according to the man page, redirects stding,stdout,stderr to /dev/null. This is fine. But if I cannot redirect stdin, stdout, stderr to different files respectively. There is a `-o` option, ``` -o output_file Append output from the daemonized process to output_file. If the file does not exist, it is created with permissions 0600. ``` The problem I am having now is that daemon command was used in some freebsd rc.d scripts without the `-f` option. When I try to restart those services through python subprocess.Popen, it would hang indefinitely. The problem can be easily reproduced by ``` python3 -c 'import subprocess; subprocess.Popen(["/usr/sbin/service", "mytestservice", "onerestart"], stderr=subprocess.PIPE).communicate()' ``` I can add the `-f` option to fix the problem, but `-f` will override the `-o` option, and I end up with no log at all. I think it would be nice if the daemon command can support redirecting stdin, stdout, stderr separately.