On Tue, 2003-10-21 at 14:51, Rick Thomas wrote: > It it very important that the update be atomic. > > One must write to a scratch file-name in the same filesystem as the file > you intend to replace, then set the last-write date, then rename it to > the old name. If you write to the same file your are replacing, during > the actual write the file is incomplete and the date is not the same as > the old file. Anyone who inquires during the write will get the wrong > date and an an incomplete file. yum writes into a .newheaders dir then does a move of headers to .oldheaders the .newheaders to headers. it's not quite atomic - but it's as close as you can get on any filesystem. > I haven't looked at the code so I don't know how it is actually done. > But Seth is very smart, so I assume that he is doing it correctly. > Also, if he weren't he would be hearing all the time from unhappy users > about inconsistent results. hahahahahahaahahahahahahahahahahahahaha hahahahahahaahahahahahahahahahahahahaha you've clearly not met me if you're calling me smart ;) -sv
