The maildirĪlgorithm is immune to this problem because it uses no locks at all.Īs described in maildir(5), safecat applies the maildir algorithm by writing data in six Anyone who hasĭeleted $HOME/.netscape/lock in order to start netscape can attest to this. Synchronizing mechanisms, but such mechanisms are subject to failure. Common strategies to resolve this problem involve creation of lock files or other Result in a collision, in which one write succeeds and the other appears to succeed butįails. Systems like mh- mail store files using numeric names in a directory. Many people or programs may write data to a common "spool" directory. Professor Bernstein's maildir algorithm, every file is guaranteed complete or nonexistent. Many mail delivery agents, this means that the data will be silently truncated. Examples of such a process are daemons, cron jobs, and mail readers.Ī machine may crash while data is being written to disk. Safecat, a single, separate process should handle naming, collecting, and deleting theseįiles. User should rename the file after safecat completes. If particular filenames are desired, then the The file name is selected by safecat to ensure that no filename collisions occur,Įven if many safecat processes and other programs implementing the maildir algorithm are When saving data with safecat, the user specifies a destination directory, but not a file Second, if a file exists in theĭestination directory, placed there by safecat, then the file is guaranteed to be Guaranteed to be saved in the destination directory. First, if safecat returns a successful exit status, then all data is Going forward, customers will pay $299 for each SafeCat install, which includes $3,000 in insurance.Ĭhurch remembered reading stories in New Times about catalytic converter theft, and how police have trouble tracing stolen converters back to their rightful owners.SYNOPSIS safecat tempdir destdir INTRODUCTION safecat is a program which implements Professor Daniel Bernstein's maildir algorithm toĬopy stdin safely to a file in a specified directory. The one that got lifted last week was not traceable, but so far, two of his buses have been tagged. “Our customers were coming in with catalytic converters that had been cut out and stolen,” Jason Church, the chief operating officer at Courtesy Automotive, told Phoenix New Times on Thursday. “It went from something I only heard about to seeing it very frequently with my own customers.”īetween June 6 and June 10, the auto group installed nearly 100 SafeCats for customers, including Darland, for free. Technicians at Courtesy Automotive Group, a family-owned Valley business since 1955, installed the first SafeCat in Arizona on June 6. The first one was installed in California in late December, according to the U.S. The product comes from Newbury Park, California-based AutoPrime Financial LLC. Courtesy Automotive registers the SafeCat tag in a database that links to a vehicle's VIN, and is accessible to law enforcement, prosecutors, and claims adjusters. The reason: Rare earth metals in the pollution control devices can be worth $20,000 per ounce.Įlias Weiss Its new anti-theft technology is called SafeCat. That's left Arizona residents among the most targeted in the country. Phoenix is rife with catalytic converter theft and, like the rest of Arizona, has seen an eye-watering spike in cases. Since January 2021, thieves have jacked not one, not two, but seven catalytic converters from the Gilbert resident.īut thanks to new technology from one Phoenix auto dealer, he’s hopeful that the thief will have his day of reckoning.Īnd he's not alone. The June 10 theft was not the first time Darland has been a victim of this crime. Someone had stolen his catalytic converter - that shiny, tubular emission control device in a vehicle's exhaust pipe. It was no mystery to him what the problem was. He heard an ear-splitting roar followed by a cacophony of sputtering. Darland let out a sigh. He climbed into the bus, stuck the key in the ignition, and twisted it to the right. Bus keys jingled in Michael Darland’s pocket as he walked across the sizzling blacktop of a Scottsdale parking lot.ĭarland, director at the Boys & Girls Club of Greater Scottsdale, was getting ready to pick up underprivileged kids and take them to summer camp.
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