Weird behaviour when installed as root, run as normal user

[jimi...@gmail.com]

So I'm trying to run a task as a local user but I'm getting a weird error about not being able to find the dep

http://d.pr/i/r1eL

If I run the dep as sudo it finds it easily... but I actually want to run as the local user.

Babs is installed in /usr/local/babushka and is upto date.

The local user has it's own sources directory pulled down 

http://d.pr/i/Ygho

And that task does exist

http://d.pr/i/CNxj

No idea what is going on... but I'm doing some digging.... 

Looks like this line in lib/babushka/source.rb is the problem

https://github.com/benhoskings/babushka/blob/master/lib/babushka/source.rb#L16

p source_prefix # => #<Fancypath:/home/dev/.babushka/sources>

p source_prefix.glob('*') # => []

Looks like something weird is happening when it tries to do the glob... debug statements reveal it's looking in the right place

#<Fancypath:/home/dev/.babushka/sources> /home/dev/.babushka/sources/*

But glob returns nothing while

20130727 18:44:19 dev@ip-10-248-82-190:/usr/local/babushka (master) irb

>> Dir.glob('/home/dev/.babushka/sources/*')

=> ["/home/dev/.babushka/sources/benhoskings"]

Any one come across this before?

[Ben Hoskings]

That's a strange one. Fancypath#glob is just a wrapper; all it's doing
in this case is

Dir.glob((self / '*').to_s)

Which should have the same effect.

Could you try this at the console?

Dir.glob(('/home/dev/.babushka/sources' / '*').to_s)

- Ben

> --
> --
> To post, email babush...@googlegroups.com
> To unsubscribe, email babushka_app...@googlegroups.com
> ~
> http://babushka.me
> http://github.com/benhoskings/babushka
> http://groups.google.com/group/babushka_app
>
> ---
> You received this message because you are subscribed to the Google Groups
> "babushka_app" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to babushka_app...@googlegroups.com.
> For more options, visit https://groups.google.com/groups/opt_out.
>
>

[jimi...@gmail.com]

Yeah I know - tres weird

20130727 22:43:34 dev@ip-10-248-82-190:/usr/local/babushka (master) which ruby

/home/dev/.rvm/rubies/ruby-1.9.3-p374/bin/ruby

20130727 22:43:37 dev@ip-10-248-82-190:/usr/local/babushka (master) /usr/bin/ruby -e "class String; def /(other); File.join(self, other); end; end; p Dir.glob(('/home/dev/.babushka/sources' / '*').to_s)"

["/home/dev/.babushka/sources/benhoskings"]

20130727 22:44:10 dev@ip-10-248-82-190:/usr/local/babushka (master) ruby -e "class String; def /(other); File.join(self, other); end; end; p Dir.glob(('/home/dev/.babushka/sources' / '*').to_s)"

["/home/dev/.babushka/sources/benhoskings"]

I'm thinking it must have something to do with ruby versions... but every version of ruby on my system is returning the correct result

20130727 22:45:17 dev@ip-10-248-82-190:/usr/local/babushka (master) /usr/bin/env ruby

p RUBY_VERSION

"1.9.3"

20130727 22:46:00 dev@ip-10-248-82-190:/usr/local/babushka (master) /usr/bin/env ruby

class String; def /(other); File.join(self, other); end; end; p Dir.glob(('/home/dev/.babushka/sources' / '*').to_s)

["/home/dev/.babushka/sources/benhoskings"]

[jimi...@gmail.com]

It seems to come down to the flags used... 

The wrapper around glob passes down a flag too, which in this case is 8 

20130727 22:53:32 dev@ip-10-248-82-190:/usr/local/babushka (master) ruby -e "class String; def /(other); File.join(self, other); end; end; p Dir.glob(('/home/dev/.babushka/sources' / '*').to_s, File::FNM_CASEFOLD)"

[]

So ... it's the default flag that is used there is for some reason killing any result from Dir.glob

[jimi...@gmail.com]

Interestingly, further experiments - /lib/* works, /opt/* doesn't, /etc/* does, /home/* doesn't

20130727 23:11:41 dev@ip-10-248-82-190:/usr/local/babushka (master) ruby -e "class String; def /(other); File.join(self, other); end; end; p Dir.glob(('/lib/*').to_s, File::FNM_CASEFOLD)"

["/lib/klibc-LZ1cv1NoEVO2ugnvqTw3e4qPc8Y.so", "/lib/udev", "/lib/libproc-3.2.8.so", "/lib/libip4tc.so.0", "/lib/libxtables.so.7.0.0", "/lib/terminfo", "/lib/cpp", "/lib/libnl-3.so.200", "/lib/libnewt.so.0.52", "/lib/ld-linux.so.2", "/lib/libulockmgr.so.1.0.1", "/lib/libdevmapper.so.1.02.1", "/lib/ufw", "/lib/libply-boot-client.so.2.0.0", "/lib/apparmor", "/lib/libnl-3.so.200.3.0", "/lib/libply.so.2.0.0", "/lib/xtables", "/lib/resolvconf", "/lib/firmware", "/lib/init", "/lib/libply-boot-client.so.2", "/lib/hdparm", "/lib/libply.so.2", "/lib/plymouth", "/lib/libnl-genl-3.so.200.3.0", "/lib/libply-splash-graphics.so.2", "/lib/modules", "/lib/libiptc.so.0.0.0", "/lib/libply-splash-core.so.2", "/lib/lsb", "/lib/libip6tc.so.0.0.0", "/lib/libipq_pic.so.0.0.0", "/lib/libnl-genl-3.so.200", "/lib/libiptc.so.0", "/lib/libipq_pic.so.0", "/lib/libipq.so.0", "/lib/crda", "/lib/libply-splash-graphics.so.2.0.0", "/lib/libulockmgr.so.1", "/lib/libiw.so.30", "/lib/systemd", "/lib/i386-linux-gnu", "/lib/libply-splash-core.so.2.0.0", "/lib/libfuse.so.2.8.6", "/lib/libxtables.so.7", "/lib/libnewt.so.0.52.11", "/lib/libip4tc.so.0.0.0", "/lib/recovery-mode", "/lib/libfuse.so.2", "/lib/libipq.so.0.0.0", "/lib/libip6tc.so.0"]

20130727 23:11:48 dev@ip-10-248-82-190:/usr/local/babushka (master) ruby -e "class String; def /(other); File.join(self, other); end; end; p Dir.glob(('/etc/*').to_s, File::FNM_CASEFOLD)"

["/etc/fstab", "/etc/nologin", "/etc/vtrgb", "/etc/iproute2", "/etc/ucf.conf", "/etc/cloud", "/etc/ifplugd", "/etc/gshadow-", "/etc/udev", "/etc/ca-certificates.conf", "/etc/nsswitch.conf", "/etc/mysql", "/etc/passwd", "/etc/profile.d", "/etc/mailcap.order", "/etc/bash_completion", "/etc/mailname", "/etc/sysctl.conf", "/etc/groff", "/etc/nanorc", "/etc/os-release", "/etc/update-manager", "/etc/mke2fs.conf", "/etc/ltrace.conf", "/etc/sgml", "/etc/terminfo", "/etc/issue.net", "/etc/rc6.d", "/etc/apt", "/etc/apport", "/etc/kbd", "/etc/at.deny", "/etc/rcS.d", "/etc/insserv.conf", "/etc/cron.hourly", "/etc/shadow", "/etc/network", "/etc/rmt", "/etc/emacs", "/etc/fstab.d", "/etc/kernel", "/etc/depmod.d", "/etc/rc1.d", "/etc/issue", "/etc/rc3.d", "/etc/pam.d", "/etc/updatedb.conf", "/etc/protocols", "/etc/lsb-release", "/etc/ufw", "/etc/resolv.conf", "/etc/postfix", "/etc/wgetrc", "/etc/login.defs", "/etc/fonts", "/etc/grub.d", "/etc/cron.monthly", "/etc/timezone", "/etc/default", "/etc/ld.so.cache", "/etc/profile", "/etc/rc.local", "/etc/cron.weekly", "/etc/byobu", "/etc/vim", "/etc/logrotate.conf", "/etc/passwd-", "/etc/alternatives", "/etc/group-", "/etc/rsyslog.d", "/etc/insserv", "/etc/pam.conf", "/etc/xml", "/etc/inputrc", "/etc/apparmor", "/etc/mime.types", "/etc/initramfs-tools", "/etc/magic.mime", "/etc/rc5.d", "/etc/calendar", "/etc/postgresql-common", "/etc/fuse.conf", "/etc/screenrc", "/etc/resolvconf", "/etc/ppp", "/etc/init", "/etc/wpa_supplicant", "/etc/debian_version", "/etc/motd", "/etc/bash.bashrc", "/etc/debconf.conf", "/etc/opt", "/etc/deluser.conf", "/etc/sysctl.d", "/etc/manpath.config", "/etc/libnl-3", "/etc/gshadow", "/etc/legal", "/etc/zsh_command_not_found", "/etc/init.d", "/etc/python", "/etc/locale.alias", "/etc/ssl", "/etc/python2.7", "/etc/services", "/etc/lsb-base", "/etc/ntp.conf", "/etc/hosts.deny", "/etc/cron.d", "/etc/dbus-1", "/etc/cron.daily", "/etc/ca-certificates", "/etc/ld.so.conf", "/etc/shells", "/etc/perl", "/etc/w3m", "/etc/skel", "/etc/console-setup", "/etc/mailcap", "/etc/magic", "/etc/apparmor.d", "/etc/gai.conf", "/etc/modules", "/etc/postgresql", "/etc/lsb-base-logging.sh", "/etc/pm", "/etc/localtime", "/etc/adjtime", "/etc/apache2", "/etc/modprobe.d", "/etc/hostname", "/etc/ec2_version", "/etc/kernel-img.conf", "/etc/rc4.d", "/etc/bash_completion.d", "/etc/acpi", "/etc/update-motd.d", "/etc/blkid.tab", "/etc/blkid.conf", "/etc/mtab", "/etc/host.conf", "/etc/group", "/etc/rpc", "/etc/systemd", "/etc/shadow-", "/etc/ld.so.conf.d", "/etc/popularity-contest.conf", "/etc/sudoers", "/etc/rsyslog.conf", "/etc/ldap", "/etc/apm", "/etc/update-notifier", "/etc/hdparm.conf", "/etc/dpkg", "/etc/crontab", "/etc/dhcp", "/etc/hosts.allow", "/etc/landscape", "/etc/logcheck", "/etc/bindresvport.blacklist", "/etc/security", "/etc/ssh", "/etc/hosts", "/etc/adduser.conf", "/etc/insserv.conf.d", "/etc/environment", "/etc/rc0.d", "/etc/networks", "/etc/securetty", "/etc/X11", "/etc/rc2.d", "/etc/sudoers.d", "/etc/newt", "/etc/logrotate.d", "/etc/aliases", "/etc/chatscripts"]

20130727 23:11:57 dev@ip-10-248-82-190:/usr/local/babushka (master) ruby -e "class String; def /(other); File.join(self, other); end; end; p Dir.glob(('/opt/*').to_s, File::FNM_CASEFOLD)"

[]

[jimi...@gmail.com]

Scratch that... opt does work... it was just empty... but home def doesn't work

[Ben Hoskings]

Interesting, looks like case folding prevents matching on some ruby
version. Could you paste the output of these on the box where it's
failing?

which ruby
ruby --version
babushka --version
babushka c -> 'Babushka.host.description'

- Ben

[jimi...@gmail.com]

I think it was because /home was not readable by anyone other than root

so it was doing something recursively and falling over at the first hurdle... even though the final directory /home/dev was readable

changing the read permissions of /home to be more open fixed this...

[Ben Hoskings]

Aha :)

Glad you found the cause. It's a shame that Dir.glob doesn't raise an
exception in that case.

[jimi...@gmail.com]

I'm not sure it should be an exception... you shouldn't need permission to /home/ to read /home/dev (if it's specified as an absolute path)

And the behaviour of Dir.glob(pattern) is as expected, it's just the behaviour of Dir.glob(pattern, FNM_CASEFOLD) that is unexpected.

[b...@hoskings.net]

Yeah. I just meant that if it's going to fail it should fail loudly; you're right that those permissions shouldn't be a problem.

—
Sent from Mailbox for iPhone