On Feb 18, 2008 9:03 PM, Phil Meyer <pmeyer@xxxxxxxxxxxxxxxx> wrote: > Valent Turkovic wrote: > > Hi, > > I have one question about sudo. > > > > While looking for uid/gid override for samba mounts I found this solution: > > sudo echo 0 > /proc/fs/cifs/LinuxExtensionsEnabled > > > > But this obviously doesn't work on Fedora but this works: > > sudo sh -c 'echo 0 > /proc/fs/cifs/LinuxExtensionsEnabled' > > > > But the trick question is in which setups and which circumstances can > > the first sudo work? > > > > Cheers, > > Valent. > > > > > > > > > > The answer: Never > > Here is why: plumbing > > The command sudo as I type it, belongs to me, and the connections to it, > ie: STDIN, STDOUT, and STDERR (file handles 0, 1, and 2) are owned by > me, and controlled by the shell that I am in. > > These are attached by the shell/OS when sudo is run as a part of loading > it, and well before the actual sudo code begins to execute. > > Think of it as plumbing and everything in the pipeline before and after > the command is mine. > > mine >command> mine > > ls > /tmp/file > > /tmp/file is created with my permissions > > any_command > /tmp/file > > same > > sudo any_command > /tmp/file > > same > > command < /tmp/file1 > /tmp/file2 > > /tmp/file1 must be readable by me > /tmp/file2 must be writable by me > > Both sides of that pipe are performed as my user, regardless of the > command being executed. > > Hope that helps. > > > > > -- > fedora-list mailing list > fedora-list@xxxxxxxxxx > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > Thank you, it does... -- http://kernelreloaded.blog385.com/ linux, blog, anime, spirituality, windsurf, wireless registered as user #367004 with the Linux Counter, http://counter.li.org. ICQ: 2125241, Skype: valent.turkovic
