This is the mail archive of the
mailing list for the binutils project.
Re: Output of ar has truncated timestamps on fuse.encfs
- From: Nicholas Clifton <nickc at redhat dot com>
- To: Gauthier Ãstervall <gauthier at ostervall dot se>, binutils at sourceware dot org
- Date: Tue, 23 Dec 2014 13:17:55 +0000
- Subject: Re: Output of ar has truncated timestamps on fuse.encfs
- Authentication-results: sourceware.org; auth=none
- References: <CAM8gEgiPEAXTs=PfhVTNJBCt3ksPK48jueT9BLTpJNVcwBN1NA at mail dot gmail dot com>
Timestamp of the ar output is truncated after the seconds, if the
current filesystem is of type fuse.encfs.
gauthier@sobel:~/tmp/ar_fuse_encfs_test $ encfs
gauthier@sobel:~/tmp/ar_fuse_encfs_test $ df -T dec
Filesystem Type 1K-blocks Used Available Use% Mounted on
encfs fuse.encfs 961301832 411164152 501283256 46%
gauthier@sobel:~/tmp/ar_fuse_encfs_test $ cd dec
gauthier@sobel:~/tmp/ar_fuse_encfs_test/dec $ make
gcc -c hello.c -o hello.o -g -Wall -Wextra -Werror -O3 -lrt -pthread
ar -cvq hello.a hello.o
a - hello.o
gauthier@sobel:~/tmp/ar_fuse_encfs_test/dec $ ll --full-time
-rw-rw-r-- 1 gauthier gauthier 6022 2014-11-24 12:59:30.000000000 +0100 hello.a
-rw-rw-r-- 1 gauthier gauthier 81 2014-11-24 12:57:38.048545000 +0100 hello.c
-rw-rw-r-- 1 gauthier gauthier 5880 2014-11-24 12:59:30.703129595 +0100 hello.o
-rw-rw-r-- 1 gauthier gauthier 259 2014-11-24 12:57:46.928434000 +0100 makefile
(see timestamp for hello.a)
I got confused as to why ar was running when it should have been
unnecessary, when running make a second time. The lib looks like it's
older than the object file.
I am not sure if it is an issue with ar or with encfs. The object file
does get a correct timestamp. Please tell me if it's an encfs problem,
and I'll post there.
I think that this must be an encfs problem because:
a. It has not been reported against any other file system.
b. The ar program does not set the timestamp on the archive, the
filesystem does that itself. AR can control the timestamps of the
object files stored within an archive, but it cannot control how the
filesystem set the timestamp of the full archive itself.