Date: Tue, 26 May 2009 17:01:27 +0400 From: Menshikov Konstantin <kostjn@peterhost.ru> Cc: freebsd-hackers@freebsd.org Subject: Re: Disk quota for Jail. Discussion. Message-ID: <4A1BE827.2030303@peterhost.ru> In-Reply-To: <20090526123632.GB1927@deviant.kiev.zoral.com.ua> References: <4A1B8CF8.7030102@peterhost.ru> <20090526120313.GA1927@deviant.kiev.zoral.com.ua> <4A1BE1F8.9050804@peterhost.ru> <20090526123632.GB1927@deviant.kiev.zoral.com.ua>
next in thread | previous in thread | raw e-mail | index | archive | help
Kostik Belousov wrote: > On Tue, May 26, 2009 at 04:35:04PM +0400, Menshikov Konstantin wrote: > >> Kostik Belousov wrote: >> >>> On Tue, May 26, 2009 at 10:32:24AM +0400, Menshikov Konstantin wrote: >>> >>>> In structure prison it is added structures containing disk quotas and >>>> usage. >>>> At start Jail, we calculate the size root path and number of files in >>>> it, thus receiving current use of a disk. >>>> In functions of allocation of disk blocks and inode, we check quotas and >>>> we increase current use. >>>> >>>> >>> UFS cannot determine whether the new allocation goes under the jail >>> root or not. >>> >>> >> Yes. But jail cannot allocate block and inode above root path. In >> allocation functions, whether for example ffs_alloc we have access to >> ucred process and we can check up there is a process in jail. >> > > Yes, you can check this for jailed process. Think about non-jailed processes > that can do allocation below the jail root. > Processes out of jail are not considered. I do not understand, these processes have what relation to disk to quotas for jail. Please explain more in detail
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4A1BE827.2030303>