I found it out immediately when I started to edit the source to insert
the test code you asked. The code is running with the help of the Apache
Commons Daemon jsvc *nix wrapper and the different file permissions are
the consequences of the way jsvc works. The OS is Ubuntu 9.10.
The jsvc wrapper does two phase initialization. In the "init" method it
runs with root privileges (but under the real uid specified in the
command line?), then in the "start" method it has already dropped root
privileges and in addition it called umask. The result is below. Logback
is initialized with the starting class, so it runs in the same
environment than the first test FileWriter in the init method. And
indeed both the log file and the test file are readable only by the
specified user. The file created by the second test FileWriter, which
runs in the second, start method, after the umask was called, is
readable by group and others.
Thank you for the help.
/var/log/jddclient/
drwxr-s--- 2 jddclient adm 4096 2010-03-08 13:29 .
drwxr-xr-x 15 root root 4096 2010-03-08 13:29 ..
-rw------- 1 jddclient adm 2525 2010-03-08 13:29 jddclient
-rw------- 1 jddclient adm 12 2010-03-08 13:29 test-init
-rw-r--r-- 1 jddclient adm 12 2010-03-08 13:29 test-start
Ceki Gülcü írta:
Logback does not do anything special with respect to file
permissions. It just opens a file (creates if not existent). Does
logback's behavior with respect file permissions differ from a file
created by "FileWriter fr = new FileWriter("x")" ?
Which operating system are you using?
On 08/03/2010 1:11 PM, Hontvári József wrote:
I cannot discover why the log file created by logback has different
permissions then another file created by the same Java process. I don't
see anything special in Logback code, do I miss something? The log file
is only readable by the user running the process.
/var/lib/jddclient
drwxr-s--- 2 jddclient adm 4096 2010-03-08 12:24 .
drwxr-xr-x 58 root root 4096 2010-03-08 12:23 ..
-rw-r--r-- 1 jddclient adm 103 2010-03-08 13:04 status.xml
/var/log/jddclient
drwxr-s--- 2 jddclient adm 4096 2010-03-08 12:24 .
drwxr-xr-x 15 root root 4096 2010-03-08 12:25 ..
-rw------- 1 jddclient adm 9811 2010-03-08 13:04 jddclient
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