| 1.1 |
| 23-Feb-2007 |
agc | Add dbfs, an example (re)fuse file system which mounts a Berkeley
database as a file system.
The file was created in the first place with the following commands:
cp /etc/passwd infile
db -E B -w -f infile -F: -C btree bdb.db
and mounted as follows:
./dbfs bdb.db /mnt
Example use is as follows, using a btree-based database with login
names as the key, and the rest of the passwd file entry as the value:
[21:17:20] agc@inspiron1300 ~ 142 > df -i /mnt
Filesystem 1K-blocks Used Avail Capacity iused ifree %iused Mounted on
puffs:refuse:dbfs 32 32 0 100% 1 0 100% /mnt
[21:17:25] agc@inspiron1300 ~ 143 > l /mnt
total 2
drwxr-xr-x 2 root wheel 0 Jan 1 1970 .
drwxr-xr-x 29 root wheel 1024 Jan 31 21:14 ..
-r--r--r-- 1 agc agc 55 Feb 23 14:49 _pflogd
-r--r--r-- 1 agc agc 50 Feb 23 14:49 _proxy
-r--r--r-- 1 agc agc 46 Feb 23 14:49 _rwhod
-r--r--r-- 1 agc agc 49 Feb 23 14:49 _timedc
-r--r--r-- 1 agc agc 33 Feb 23 14:49 agc
-r--r--r-- 1 agc agc 51 Feb 23 14:49 bin
-r--r--r-- 1 agc agc 40 Feb 23 14:49 daemon
-r--r--r-- 1 agc agc 46 Feb 23 14:49 games
-r--r--r-- 1 agc agc 54 Feb 23 14:49 named
-r--r--r-- 1 agc agc 56 Feb 23 14:49 nobody
-r--r--r-- 1 agc agc 53 Feb 23 14:49 ntpd
-r--r--r-- 1 agc agc 49 Feb 23 14:49 operator
-r--r--r-- 1 agc agc 55 Feb 23 14:49 postfix
-r--r--r-- 1 agc agc 32 Feb 23 14:49 root
-r--r--r-- 1 agc agc 53 Feb 23 14:49 sshd
-r--r--r-- 1 agc agc 43 Feb 23 14:49 toor
-r--r--r-- 1 agc agc 52 Feb 23 14:49 uucp
[21:17:32] agc@inspiron1300 ~ 144 > grep nologin /mnt/*
/mnt/_pflogd:*:18:18:& pseudo-user:/var/chroot/pflogd:/sbin/nologin
/mnt/_proxy:*:21:21:Proxy Services:/nonexistent:/sbin/nologin
/mnt/_rwhod:*:19:19:& pseudo-user:/var/rwho:/sbin/nologin
/mnt/_timedc:*:22:22:& pseudo-user:/nonexistent:/sbin/nologin
/mnt/bin:*:3:7:Binaries Commands and Source:/:/sbin/nologin
/mnt/daemon:*:1:1:The devil himself:/:/sbin/nologin
/mnt/games:*:7:13:& pseudo-user:/usr/games:/sbin/nologin
/mnt/named:*:14:14:& pseudo-user:/var/chroot/named:/sbin/nologin
/mnt/nobody:*:32767:39:Unprivileged user:/nonexistent:/sbin/nologin
/mnt/ntpd:*:15:15:& pseudo-user:/var/chroot/ntpd:/sbin/nologin
/mnt/operator:*:2:5:System &:/usr/guest/operator:/sbin/nologin
/mnt/postfix:*:12:12:& pseudo-user:/var/spool/postfix:/sbin/nologin
/mnt/sshd:*:16:16:& pseudo-user:/var/chroot/sshd:/sbin/nologin
/mnt/uucp:*:66:1:UNIX-to-UNIX Copy:/nonexistent:/sbin/nologin
[21:17:37] agc@inspiron1300 ~ 145 >
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